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64 results on '"Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN)"'

1. Ecological and biological factors involved in the transmission ofEchinococcus multilocularisin the French Ardennes

Author

Marie-Hélène Guislain, Francis Raoul, Marie-Eve Terrier, Guillaume Froment, Hubert Ferté, Marie-Lazarine Poulle, Patrick Giraudoux, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Agence Française de Sécurité Sanitaire des Aliments (AFSSA), Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Agence Française de Sécurité Sanitaire des Aliments ( AFSSA ), AFSSA, Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 ( PROTAL ), Université de Reims Champagne-Ardenne ( URCA ) -Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -ANSES-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne ( URCA ) -Université de Picardie Jules Verne ( UPJV ) -Université de Reims Champagne-Ardenne ( URCA ) -Université de Picardie Jules Verne ( UPJV )

Subjects
Veterinary medicine, Vulpes, animal diseases, 030231 tropical medicine, Population, Prevalence, Foxes, Echinococcus multilocularis, [ SDV.EE ] Life Sciences [q-bio]/Ecology, environment, 030308 mycology & parasitology, Rodent Diseases, Feces, 03 medical and health sciences, 0302 clinical medicine, Echinococcosis, parasitic diseases, Animals, Intestinal Diseases, Parasitic, Microtus, education, Population Density, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, 2. Zero hunger, 0303 health sciences, education.field_of_study, biology, Arvicolinae, Ecology, Stomach, Intermediate host, General Medicine, biology.organism_classification, Apodemus, Animal Science and Zoology, Parasitology, Vole, France
Abstract

In order to identify the respective importance of the ecological and biological factors involved in the transmission ofEchinococcus multilocularis, we estimated grassland vole intermediate host (Microtussp. andArvicola terrestris) population densities, in relation to the diet of the definitive host (red fox,Vulpes vulpes) and with the prevalence ofE. multilocularisin the fox population. The study was conducted in the Ardennes, north-eastern France, which is an area with a high incidence of alveolar echinococcosis. Surface index methods showed thatMicrotuswas the most abundant intermediate host in the area. Furthermore,Microtuswas present in one-third of the 144 faeces and 98 stomach content samples examined and represented more than two-thirds of the rodent occurrences. Red fox predation onMicrotuswas significantly correlated withMicrotusrelative abundance. In contrast, the relative abundance ofA. terrestriswas very low. This species, as well asClethrionomys glareolusandApodemussp., was little consumed.E. multilocularisprevalence in foxes was determined from carcasses and reached 53% (95% confidence interval 45–61%). Intensity of infection varied from 2 to 73,380 worms per fox, with 72% of the sampled worm burden harboured by 8% of the sampled foxes. The selected explanatory variables (sex, year, age class, health and nutritional condition, and season) failed to predict prevalence rate and worm burden. The high prevalence rate in foxes indicates the possibility of intenseE. multilocularistransmission, apart from periods, or in landscapes, favourable to large population outbreaks of grassland rodents.

Published
2008

2. Fox faeces and vole distribution on a local range: ecological data in a parasitological perspective forEchinococcus multilocularis

Author

Francis Raoul, M. L. Poulle, Marie-Hélène Guislain, Patrick Giraudoux, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ) -Centre National de la Recherche Scientifique ( CNRS ), Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 ( PROTAL ), Université de Reims Champagne-Ardenne ( URCA ) -Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ) -ANSES-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne ( URCA ) -Université de Picardie Jules Verne ( UPJV ) -Université de Reims Champagne-Ardenne ( URCA ) -Université de Picardie Jules Verne ( UPJV )

Subjects
Range (biology), Climate, Population Dynamics, habitat, Foxes, Vulpes vulpes, MESH : Echinococcus multilocularis, MESH : Echinococcosis, Population density, 030308 mycology & parasitology, Feces, 0302 clinical medicine, MESH: Demography, MESH : Ecosystem, MESH : Disease Reservoirs, MESH: Animals, MESH: Ecosystem, MESH : Population Dynamics, local range, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, 0303 health sciences, biology, Arvicolinae, Ecology, transmission, Intermediate host, MESH: Feces, MESH: Climate, Infectious Diseases, Microtus, Habitat, France, Seasons, faeces, MESH : Demography, MESH: Population Density, Veterinary (miscellaneous), 030231 tropical medicine, Echinococcus multilocularis, lcsh:Infectious and parasitic diseases, [ SDV.EE ] Life Sciences [q-bio]/Ecology, environment, MESH: Echinococcosis, 03 medical and health sciences, Echinococcosis, Animals, lcsh:RC109-216, MESH : Population Density, Arvicola terrestris, MESH : France, Transect, Ecosystem, Demography, Disease Reservoirs, Population Density, MESH : Foxes, MESH: Echinococcus multilocularis, MESH: Disease Reservoirs, MESH: Foxes, MESH : Seasons, MESH : Climate, MESH : Feces, MESH: Arvicolinae, MESH: Population Dynamics, biology.organism_classification, MESH : Arvicolinae, MESH: France, Insect Science, Animal Science and Zoology, Parasitology, Vole, MESH : Animals, MESH: Seasons
Abstract

International audience; The completion of the life cycle of Echinococcus multilocularis needs a spatial overlap between intermediate host species (voles) and definitive host (fox) faeces. Factors influencing the importance of this overlap were investigated in north eastern France. Kilometric transects were walked to collect fox faeces and to estimate vole relative densities through surface indices. Habitat and climatic conditions were the strongest predictors of the number of faeces collected, while vole densities had no predictive power. Densities of both Microtus sp. and fox faeces were higher in medium-height vegetation edge. The consequences of such results to understand local transmission processes and human exposure are discussed.

Published
2007

3. Survival and infectivity of Toxoplasma gondii and Cryptosporidium parvum oocysts bioaccumulated by Dreissena polymorpha

Author

Stéphane Betoulle, Aurélie Bigot-Clivot, S. La Carbona, Gilles Gargala, Angélique Rousseau, Sandie Escotte-Binet, Loïc Favennec, Elodie Géba, Isabelle Villena, Dominique Aubert, Jitender P. Dubey, A. Le Guernic, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de l'Environnement Industriel et des Risques (INERIS), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), ACTALIA [Villers-Bocage], USDA Agricultural Research Service [Beltsville, Maryland], USDA-ARS : Agricultural Research Service, and Centre Hospitalier Universitaire de Reims (CHU Reims)

Subjects
Applied Microbiology and Biotechnology, Dreissena, Microbiology, 03 medical and health sciences, Animals, Bioassay, ComputingMilieux_MISCELLANEOUS, Feces, 030304 developmental biology, Cryptosporidium parvum, Infectivity, 0303 health sciences, biology, 030306 microbiology, Oocysts, Water, Toxoplasma gondii, General Medicine, Mussel, biology.organism_classification, 6. Clean water, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Biodegradation, Environmental, [SDE]Environmental Sciences, Zebra mussel, Toxoplasma, Biotechnology
Abstract

Aims The study was aimed to understand the depuration process of Cryptosporidium parvum and Toxoplasma gondii oocysts by zebra mussel (Dreissena polymorpha), to consider the use of the zebra mussel as a bioremediation tool. Materials and methods Two experiments were performed: (i) individual exposure of mussel to investigate oocyst transfers between bivalves and water and (ii) in vivo exposure to assess the ability of the zebra mussel to degrade oocysts. Results (i) Our results highlighted a transfer of oocysts from the mussels to the water after 3 and 7 days of depuration; however, some oocysts were still bioaccumulated in mussel tissue. (ii) Between 7 days of exposure at 1000 or 10 000 oocysts/mussel/day and 7 days of depuration, the number of bioaccumulated oocysts did not vary but the number of infectious oocysts decreased. Conclusion Results show that D. polymorpha can release oocysts in water via (pseudo)faeces in depuration period. Oocysts remain bioaccumulated and infectious oocyst number decreases during the depuration period in zebra mussel tissues. Results suggest a degradation of bioaccumulated C. parvum and T. gondii oocysts. Significance and impact of the study This study highlighted the potential use of D. polymorpha as a bioremediation tool to mitigate of protozoan contamination in water resources.

Published
2020

4. Comment on Xu et al. Isolation and Identification of a Novel Phlebovirus, Hedi Virus, from Sandflies Collected in China. Viruses 2021, 13, 772

Author

Rémi N. Charrel, Jérôme Depaquit, Unité des Virus Emergents (UVE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
Phlebovirus, China, Genome, Viral, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, Virus Replication, Microbiology, Virus, Virology, Animals, ComputingMilieux_MISCELLANEOUS, Phylogeny, biology, Whole Genome Sequencing, Comment, Genomics, biology.organism_classification, Isolation (microbiology), QR1-502, n/a, Infectious Diseases, Phlebotomus Fever, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, RNA, Viral, Identification (biology), Psychodidae
Abstract

We report the isolation of a newly recognized phlebovirus, Hedi virus (HEDV), from

Published
2021

5. Epidemiological and clinical study of microsporidiosis in French kidney transplant recipients from 2005 to 2019: TRANS‐SPORE registry

Author

Dumond, Clément, Aulagnon, Florence, Etienne, Isabelle, Heng, Anne‐Elisabeth, Bougnoux, Marie‐Elisabeth, Favennec, Loic, Kamar, Nassim, Iriart, Xavier, Pereira, Bruno, Büchler, Mathias, Desoubeaux, Guillaume, Kaminski, Hannah, Lussac‐Sorton, Florian, Gargala, Gilles, Anglicheau, Dany, Poirier, Philippe, Scemla, Anne, Garrouste, Cyril, Labbe, Franck, Damiani, Céline, Le Govic, Yohann, Totet, Anne, De Gentile, Ludovic, Lemoine, Jean‐Philippe, Bellanger, Anne Pauline, Accoceberry, Isabelle, Delhaes, Laurence, Gabriel, Frédéric, Millet, Pascal, Le Gal, Solène, Nevez, Gilles, Bonhomme, Julie, Capitaine, Agathe, Demar, Magalie, Moniot, Maxime, Nourrisson, Céline, Angebault, Cécile, Botterel, Françoise, Foulet, Françoise, Basmaciyan, Louise, Dalle, Frédéric, Valot, Stéphane, Desbois‐Nogard, Nicole, Robert, Gladys, Deleplancque, Anne‐Sophie, Frealle, Emilie, Leroy, Jordan, Ajzenberg, Daniel, Durieux, Marie‐Fleur, Chapey‐Picq, Emmanuelle, Dupont, Damien, Menotti, Jean, Rabodonirina, Meja, Lollivier, Coralie, Bastien, Patrick, Debourgogne, Anne, Machouart, Marie, Lavergne, Rose‐Anne, Morio, Florent, Delaunay, Pascal, Pomares, Christelle, Simon, Loïc, Sasso, Milène, Argy, Nicolas, Houze, Sandrine, Yera, Hélène, Dannaoui, Eric, Sitterle, Emilie, Kapel, Nathalie, Tantaoui, Ilhame, Thellier, Marc, Belkadi, Ghania Belkacem, Moreno‐Sabater, Alicia, Hamane, Samia, Nicolas, Muriel, Perraud, Estelle, Chemla, Cathy, Villena, Isabelle, Autier, Brice, Costa, Damien, Flori, Pierre, Brunet, Julie, BERRY, Antoine, Chesnay, Adélaïde, Artur, Fabienne, Verdurme, Laura, Foulquier, Jean‐Baptiste, Prigent, Gwenole, Chatelain, Rémi, Lesthelle, Sophie, Groupe d'Étude des Interactions Hôte-Pathogène (GEIHP), Université d'Angers (UA), SFR UA 4208 Interactions Cellulaires et Applications Thérapeutiques (ICAT), Laboratoire de Parasitologie et Mycologiede [CHRU Brest], Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), CHU Clermont-Ferrand, CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Rouen, Normandie Université (NU), Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), CHU Bordeaux [Bordeaux], Infection Inflammation et Interaction Hôtes Pathogènes [CHU Clermont-Ferrand] (3IHP ), Direction de la recherche clinique et de l’innovation [CHU Clermont-Ferrand] (DRCI), CHU Clermont-Ferrand-CHU Clermont-Ferrand, Université Clermont Auvergne (UCA), Centre Hospitalier Universitaire de Reims (CHU Reims), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
Male, medicine.medical_specialty, Opportunistic infection, [SDV]Life Sciences [q-bio], 030230 surgery, Microsporidiosis, Gastroenterology, Albendazole, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, parasitic diseases, medicine, Humans, Enterocytozoon bieneusi, Fumagillin, Registries, Kidney transplantation, ComputingMilieux_MISCELLANEOUS, Aged, 0303 health sciences, Transplantation, biology, 030306 microbiology, business.industry, Enterocytozoon, Middle Aged, Spores, Fungal, fumagillin, medicine.disease, biology.organism_classification, Kidney Transplantation, 3. Good health, immunosuppressive regimen, Diarrhea, Infectious Diseases, medicine.symptom, business, medicine.drug
Abstract

Introduction Microsporidiosis is an emerging opportunistic infection in renal transplantation (RT) recipients. We aimed to describe its clinical presentation and treatment. Materials and methods We collected microsporidiosis cases identified in RT recipients between 2005 and 2019 in six French centers from the Crystal, Divat and Astre prospective databases. Results We report 68 RT recipients with intestinal microsporidiosis; the patients were predominantly male (61.8%), with a median age of 58 (46-69) years. Infection occurred at a median time of 3 (0.8-6.8) years posttransplant. Only Enterocytozoon bieneusi was found. Microsporidiosis manifested as diarrhea (98.5% of patients) with weight loss (72.1%) and acute renal injury (57.4%) without inflammatory biological parameters. The therapeutic approaches were no treatment (N = 9), reduction of the immunosuppressive regimen (∆IS) (N = 22), fumagillin alone (N = 9), fumagillin and ∆IS (N = 19), and albendazole or nitazoxanide and ∆IS (N = 9). Overall clinical remission was observed in 60 patients (88.2%). We observed no acute kidney rejection, renal transplant failure or death within 6 months after microsporidiosis. Conclusion E. bieneusi is an underestimated opportunistic pathogen in RT recipients, and infection with E. bieneusi leads to diarrhea with important dehydration and acute renal injury. The treatment is based on the reduction of the immunosuppressive regimen and the administration of fumagillin if available. This article is protected by copyright. All rights reserved.

Published
2021

6. Puumala Virus Variants Circulating in Forests of Ardennes, France: Ten Years of Genetic Evolution

Author

Franck Boué, Jordi Serra-Cobo, Séverine Murri, Mathilde Couteaudier, Dominique Pontier, Philippe Marianneau, Noël Tordo, Viviane Hénaux, Guillaume Castel, Denis Augot, Frank Sauvage, Marc López-Roig, Elodie Monchatre-Leroy, Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Laboratoire de la rage et de la faune sauvage de Nancy (LRFSN), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Institut de Recerca de la Biodiversitat - Biodiversity Research Institute [Barcelona, Spain] (IRBio UB), Universitat de Barcelona (UB), Department de Biologia Evolutiva, Ecologia i Ciències Ambientals, University of Barcelona, Laboratoire de Lyon [ANSES], Université de Lyon-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Morphogénèse et antigénicité du VIH et du virus des Hépatites (MAVIVH - U1259 Inserm - CHRU Tours ), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Seenovate, Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), LabEx Ecofect, Eco-Evolutionary Dynamics of Infectious Diseases, Stratégies Antivirales, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris] (IP), Institut Pasteur de Guinée, Réseau International des Instituts Pasteur (RIIP), This research was internally funded by the participating teams and received additional funding from ANSES (Afsset grant EST-2007-75) as well as EU grants FP7-261504 EDENext and FP7-278976 ANTIGONE and the LABEX ECOFECT (ANR-11-LABX-0048) of Université de Lyon., ANR-11-LABX-0048,ECOFECT,Dynamiques eco-évolutives des maladies infectieuses(2011), European Project: 261504,EC:FP7:HEALTH,FP7-HEALTH-2010-single-stage,EDENEXT(2011), European Project: 278976,EC:FP7:HEALTH,FP7-HEALTH-2011-two-stage,ANTIGONE(2011), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Centre International de Recherche en Infectiologie - UMR (CIRI), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), ANSES (Afsset grant EST-2007-75), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Institut Pasteur [Paris], Marchal-Mauer, Sophie, Dynamiques eco-évolutives des maladies infectieuses - - ECOFECT2011 - ANR-11-LABX-0048 - LABX - VALID, Biology and control of vector-borne infections in Europe - EDENEXT - - EC:FP7:HEALTH2011-01-01 - 2015-06-30 - 261504 - VALID, and ANTIcipating the Global Onset of Novel Epidemics - ANTIGONE - - EC:FP7:HEALTH2011-11-01 - 2016-10-31 - 278976 - VALID

Subjects
Microbiology (medical), Orthohantavirus, Rodent, Population, Zoology, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, Article, 03 medical and health sciences, biology.animal, [SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, Myodes glareolus, evolution, Nephropathia epidemica, medicine, population dynamics, Immunology and Allergy, Seroprevalence, education, Virus Orthohantavirus, Molecular Biology, 030304 developmental biology, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, 0303 health sciences, education.field_of_study, Genetic diversity, General Immunology and Microbiology, biology, seroprevalence, 030306 microbiology, Microevolution, biology.organism_classification, medicine.disease, Bank vole, Infectious Diseases, microdiversity, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Medicine, Puumala virus, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis
Abstract

International audience; In Europe, Puumala virus (PUUV) transmitted by the bank vole (Myodes glareolus) is the causative agent of nephropathia epidemica (NE), a mild form of haemorrhagic fever with renal syndrome. In France, very little is known about the spatial and temporal variability of the virus circulating within bank vole populations. The present study involved monitoring of bank vole population dynamics and PUUV microdiversity over a ten-year period (2000–2009) in two forests of the Ardennes region: Elan and Croix-Scaille. Ardennes region is characterised by different environmental conditions associated with different NE epidemiology. Bank vole density and population parameters were estimated using the capture/marking/recapture method, and blood samples were collected to monitor the overall seroprevalence of PUUV in rodent populations. Phylogenetic analyses of fifty-five sequences were performed to illustrate the genetic diversity of PUUV variants between forests. The pattern of the two forests differed clearly. In the Elan forest, the rodent survival was higher, and this limited turn-over resulted in a lower seroprevalence and diversity of PUUV sequences than in the Croix-Scaille forest. Uncovering the links between host dynamics and virus microevolution is improving our understanding of PUUV distribution in rodents and the NE risk.

Published
2021

7. Etest ECVs/ECOFFs for detection of resistance in prevalent and three non-prevalent Candida spp. to triazoles and amphotericin B and Aspergillus spp. to caspofungin: Further assessment of modal variability

Author

Damien Dupont, John D. Turnidge, J Fuller, Maiken Cavling Arendrup, A Forastiero, M Dehais, Emilia Cantón, Hélène Guegan, Nathalie Bourgeois, Ana Espinel-Ingroff, Guillermo Garcia-Effron, Laurence Delhaes, B. Bouteille, Teresa Peláez, J Garcia, Cornelia Lass-Flörl, Jesús Guinea, Arnaud Fekkar, Nelesh P. Govender, Françoise Botterel, Eric Dannaoui, Gloria M. González, R Magobo, Sophie Cassaing, Michaela Lackner, Milène Sasso, Sandrine Houzé, Virginia Commonwealth University (VCU), Hôpital Lapeyronie [Montpellier] (CHU), University of Adelaide, Statens Serum Institut [Copenhagen], CHU Henri Mondor, CHU Limoges, CHU Toulouse [Toulouse], Unité de Parasitologie-Mycologie [CHU HEGP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), CHU Bordeaux [Bordeaux], Hospices Civils de Lyon, Departement de Neurologie (HCL), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), University of Western Ontario (UWO), Universidad Nacional del Litoral [Santa Fe] (UNL), Hospital Universitario La Paz, Universidad Autonoma de Nuevo Leon [Mexique] (UANL), National Institute for Communicable Diseases [Johannesburg] (NICD), Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Hospital General Universitario 'Gregorio Marañón' [Madrid], Mère et enfant en milieu tropical : pathogènes, système de santé et transition épidémiologique (MERIT - UMR_D 216), Institut de Recherche pour le Développement (IRD)-Université de Paris (UP), Leopold Franzens Universität Innsbruck - University of Innsbruck, Universidad de Oviedo [Oviedo], CHU Henri Mondor [Créteil], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Mère et enfant en milieu tropical : pathogènes, système de santé et transition épidémiologique (MERIT - UMR_D 261), and Institut de Recherche pour le Développement (IRD)-Université Paris Cité (UPCité)

Subjects
Posaconazole, [SDV]Life Sciences [q-bio], Aspergillus fumigatus, Microbiology, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Amphotericin B, medicine, Pharmacology (medical), 030212 general & internal medicine, caspofungin, Candida albicans, triazoles, Etest, Candida, Aspergillus spp., Candida, ECOFFS, ECVs, ERG11 mutants, amphotericin B, antifungal resistance, caspofungin, nonprevalent Candida, triazoles, Pharmacology, Voriconazole, ECOFFS, 0303 health sciences, biology, 030306 microbiology, ERG11 mutants, antifungal resistance, biochemical phenomena, metabolism, and nutrition, biology.organism_classification, bacterial infections and mycoses, amphotericin B, Aspergillus spp, nonprevalent Candida, Infectious Diseases, chemistry, ECVs, Caspofungin, Fluconazole, medicine.drug
Abstract

International audience; Susceptibility testing is an important tool in the clinical setting; its utility is based on the availability of categorical endpoints, breakpoints (BPs) or epidemiological cutoff values (ECVs/ECOFFs). CLSI and EUCAST have developed antifungal susceptibility testing, BPs and ECVs for some fungal species. Although the Concentration Gradient Strip BioMerieux Etest is useful for routine testing in the clinical laboratory, ECVs are not available for all agent/species; the lack of clinical data precludes development of BPs. We re-evaluated and consolidated Etest data points from three previous studies, and included new data. We defined ECOFFinder Etest ECVs for three sets of species/agent combinations: fluconazole, posaconazole and voriconazole and 8 Candida spp.; amphotericin B and 3 non-prevalent Candida spp.; and caspofungin and 5 Aspergillus spp. The total of Etest MICs from 23 laboratories (Europe, the Americas, South Africa) included (antifungal agent/dependent): 17,242 Candida albicans, 244 C. dubliniensis, 5,129 C. glabrata species complex (SC), 275 C. guilliermondii (Meyerozyma guilliermondii), 1,133 C. krusei (Pichia kudriavzevii), 933 C. kefyr (Kluyveromyces marxianus), 519 C. lusitaniae (Clavispora lusitaniae), 2,947 C. parapsilosis SC, 2,214 C. tropicalis, 3,212 Aspergillus fumigatus, 232 A. flavus, 181 A. niger, and 267 A. terreus SC isolates. Triazole MICs for 66 confirmed non-wild-type (non-WT) Candida isolates were available (ERG11 point mutations). Distributions fulfilling CLSI ECV criteria were pooled and ECOFFinder Etest ECVs were established for triazoles (9 Candida spp.); amphotericin B (3 less-prevalent Candida spp.) and caspofungin (4 Aspergillus spp.). Etest fluconazole ECVs could be good detectors of Candida non-WT isolates (59/61 Non-WT: 4 of 6 species).

Published
2021

8. Pattern of latrine use by domestic cats on dairy farms and the implications for Toxoplasma gondii transmission

Author

Simon, Julie Alice, Chancel, Eva, Hubert, Pauline, Aubert, Dominique, Villena, Isabelle, Poulle, Marie-Lazarine, Lambert, Sébastien, Ezanno, Pauline, Garel, Mathieu, Gilot-Fromont, Emmanuelle, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Biodémographie évolutive, Département écologie évolutive [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Normandie Université (NU)-Normandie Université (NU)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), UMR 1300 Biologie, Epidémiologie et Analyse du Risque, Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Biologie, Epidémiologie et Analyse du Risque (BioEpAR)-Santé animale (S.A.), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)

Subjects
0106 biological sciences, Veterinary medicine, Biology, Cat Diseases, 010603 evolutionary biology, 01 natural sciences, Host-Parasite Interactions, law.invention, Soil, 03 medical and health sciences, law, medicine, Animals, Sexual maturity, ComputingMilieux_MISCELLANEOUS, Feces, Population Density, 0303 health sciences, CATS, Behavior, Animal, General Veterinary, 030306 microbiology, Zoonosis, Toxoplasma gondii, General Medicine, medicine.disease, biology.organism_classification, Toxoplasmosis, Dairying, Toxoplasmosis, Animal, Transmission (mechanics), Cats, Linear Models, Latrine, Female, Parasitology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

Toxoplasma gondii is the parasite responsible for toxoplasmosis, a highly prevalent zoonosis that affects humans and warm-blooded animals. Faeces of infected cats can contain millions of T. gondii oocysts, which remain infectious in the environment for months. Sites repeatedly used by cats for defecation ('latrines') are recognised as hotspots of T. gondii soil contamination, but this contamination varies from one latrine to another. To understand this spatial heterogeneity, camera traps were deployed in 39 cat latrines on three dairy farms with high-density cat populations and programmed to record visits during sixteen 10-day sessions, rotating between three farms over a period of a year. Generalized Linear Mixed Models were used to test the effects of cat sexual maturity, latrine location and season on the number of cat faeces deposited and on the number of cats defecating per latrine, as determined from the analysis of 41,282 video recordings. Sexually immature cats defecated 6.60-fold (95% CI = [2.87-15.25]) more often in latrines located close to a feeding site than in other latrines. This pattern was also observed for mature males (odds ratio [OR] = 9.42, 95% CI = [3.29-26.91]), especially during winter, but not for mature females (OR = 1.77, 95% CI = [0.80-3.94]). The number of defecating cats was also 2.67-fold (95% CI = [1.66-4.30], P 0.001) higher in latrines located close to a feeding point than in those located far from it, regardless of cat category and season. Visits by intermediate T. gondii hosts (micromammals, birds and others) were also recorded. Out of the 39 latrines, 30 (76.92%) were visited by at least one intermediate host during the study period, and some latrines were highly frequented (up to 8.74 visits/day on average). These results provide evidence that the location of food resources in dairy farms influences the latrine use pattern by cats. Highly frequented latrines can be of high risk of T. gondii infection for definitive and intermediate hosts.

Published
2019

9. Diversity of Toxoplasma gondii strains shaped by commensal communities of small mammals

Author

Carine Brouat, Dominique Aubert, Camille Dubois, Marie-Laure Dardé, Mamadou Kane, Gereon Schares, Aurélien Mercier, Lokman Galal, Daniel Ajzenberg, Youssoupha Niang, Aliou Sow, Thomas Cuny, Claire Stragier, Azra Hamidović, Clément Glodas, Mamoudou Diallo, Philippe Vignoles, Thao Rohart, Neuroépidémiologie Tropicale (NET), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Centre Hospitalier Universitaire de Reims (CHU Reims), Université de Limoges (UNILIM), Institute of Epidemiology (IfE), Friedrich-Loeffler-Institut (FLI), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), CHU Limoges, Institut de recherche pour le développement (IRD [Sénégal]), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), French Agence Nationale de la Recherche (ANR project IntroTox) : 17-CE35-0004, University of Limoges, France, Nouvelle-Aquitaine region (Directorate of Research, Higher Education and Technology Transfer), and ANR-17-CE35-0004,IntroTox,PHENOMÈNES D'INTROGRESSIONS DANS L'ÉTUDE DE LA DIVERSITÉ GÉNÉTIQUE DU TOXOPLASME ENTRE LA FRANCE ET L'AFRIQUE DE L'OUEST ET CENTRALE : DES INFLUENCES HUMAINES ET ENVIRONEMENTALES(2017)

Subjects
0301 basic medicine, Genotype, Genotyping Techniques, Rodent, 030231 tropical medicine, Toxoplasma gondii, Neospora caninum, Zoology, Rodentia, Introduced species, Biology, Rodents, Genetic diversity, House mouse, Serology, Rodent Diseases, 03 medical and health sciences, 0302 clinical medicine, biology.animal, West Africa, parasitic diseases, Prevalence, Animals, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, ComputingMilieux_MISCELLANEOUS, Hammondia, [SDV.BA]Life Sciences [q-bio]/Animal biology, Genetic Variation, biology.organism_classification, Biota, Senegal, Toxoplasmosis, Animal, 030104 developmental biology, Infectious Diseases, Parasitology, House mice, Toxoplasma, Microsatellite Repeats
Abstract

International audience; Commensal rodent species are key reservoirs for Toxoplasma gondii in the domestic environment. In rodents, different T. gondii strains show variable patterns of virulence according to host species. Toxoplasma gondii strains causing non-lethal chronic infections in local hosts will be more likely to persist in a given environment, but few studies have addressed the possible role of these interactions in shaping the T. gondii population structure. In addition, the absence of validated techniques for upstream detection of T. gondii chronic infection in wild rodents hinders exploration of this issue under natural conditions. In this study, we took advantage of an extensive survey of commensal small mammals in three coastal localities of Senegal, with a species assemblage constituted of both native African species and invasive species. We tested 828 individuals for T. gondii chronic infection using the modified agglutination test for antibody detection in serum samples and a quantitative PCR assay for detection of 7'. gondii DNA in brain samples. The infecting 7'. gondii strains were genotyped whenever possible by the analysis of 15 microsatellite markers. We found (i) a very poor concordance between molecular detection and serology in the invasive house mouse, (ii) significantly different levels of prevalence by species and (iii) the autochthonous T. gondii Africa 1 lineage strains, which are lethal for laboratory mice, only in the native African species of commensal small mammals. Overall, this study highlights the need to reconsider the use of MAT serology in natural populations of house mice and provides the first known data about T. gondii genetic diversity in invasive and native species of small mammals from Africa. In light of these results, we discuss the role of invasive and native species, with their variable adaptations to different T. gondii strains, in shaping the spatial structure of 7'. gondii genetic diversity in Africa.

Published
2019

10. Experimental infection with Toxoplasma gondii in broiler chickens (Gallus domesticus): seroconversion, tissue cyst distribution, and prophylaxis

Author

Zsuzsa Kalmár, Gereon Schares, Adriana Györke, Cristina Laura Ştefănuţ, Ivana Klun, Vasile Cozma, Viorica Mircean, Zsuzsa Friss, Maria E Nedişan, Andra Toma-Naic, Olgica Djurković-Djaković, Radu Blaga, Isabelle Villena, Amandine Blaizot, Biologie moléculaire et immunologie parasitaires et fongiques (BIPAR), École nationale vétérinaire d'Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Friedrich-Loeffler-Institut (FLI), University of Belgrade [Belgrade], Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Centre Hospitalier Universitaire de Reims (CHU Reims), École nationale vétérinaire - Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
Male, Antibodies, Protozoan, Artemisia annua, 030308 mycology & parasitology, chemistry.chemical_compound, Mice, Random Allocation, 0302 clinical medicine, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Parasite hosting, Tissue Distribution, ComputingMilieux_MISCELLANEOUS, 0303 health sciences, biology, Triazines, Antibody titer, Brain, Heart, General Medicine, 3. Good health, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Seroconversion, Female, Antibody, Toxoplasma, Tissue cysts, Genotype, 030231 tropical medicine, TOXOSOURCES, Toxoplasma gondii, Pectoralis Muscles, 03 medical and health sciences, Mouse bioassay, Diclazuril, Nitriles, parasitic diseases, medicine, Animals, Poultry Diseases, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, Plants, Medicinal, General Veterinary, Broiler, medicine.disease, biology.organism_classification, Virology, Toxoplasmosis, Toxoplasmosis, Animal, chemistry, Insect Science, biology.protein, Cats, Coccidiostats, Parasitology, Chickens
Abstract

Toxoplasma gondii is a widespread zoonotic protozoan that infects most species of mammals and birds, including poultry. This study aimed to investigate the course of T. gondii infection and the efficacy of diclazuril and Artemisia annua in preventing infection in experimentally infected chickens. Seventy-five 1-month-old chickens, female and male, were randomly divided into five groups (n = 15 each) as follows: (1) uninfected untreated (negative control, NC); (2) infected with T. gondii genotype II/III isolated from a wild cat (group WC); (3) infected with T. gondii genotype II isolated from a domestic cat (group DC); (4) infected with T. gondii domestic cat strain and treated with the anticoccidial diclazuril (group DC-D); and (5) infected with T. gondii domestic cat strain and treated with the medicinal plant Artemisia annua (group DC-A). Clinical signs, body temperature, mortality rate, weight gain, feed conversion ratio, hematological parameters, and the presence of T. gondii–specific IgY antibodies were recorded in all groups. Five chickens per group were euthanized 28 days post-infection (p.i.) and their brains, hearts, and breast muscle tested for T. gondii by mouse bioassay and polymerase chain reaction (PCR). No clinical signs related to the experimental infection were observed throughout the study period. T. gondii–specific antibodies were detected by day 28 p.i., but not in all infected chickens. Overall, T. gondii DNA was detected (bioassay or tissue digests) in all infected and untreated chickens (10/10), while viable parasite (bioassay) was isolated from 7 out of 10 chickens. The parasite was most frequently identified in the brain (7/10). There were no differences in the T. gondii strains regarding clinical infection and the rate of T. gondii detection in tissues. However, higher antibody titers were obtained in chickens infected with T. gondii WC strain (1:192) comparing with T. gondii DC strain (1:48). A. annua reduced replication of the parasite in 3 out of 5 chickens, while diclazuril did not. In conclusion, broiler chickens were resistant to clinical toxoplasmosis, irrespective of the strain (domestic or wild cat strain). The herb A. annua presented prophylactic efficacy by reduced parasite replication. However, further studies are required aiming at the efficacy of diclazuril and A. annua for the prevention of T. gondii infection in chickens using quantitative analysis methods.

Published
2021

11. Assessment of a Multiplex PCR for the Simultaneous Diagnosis of Intestinal Cryptosporidiosis and Microsporidiosis

Author

Cyril Garrouste, Frédéric Dalle, Frédéric Delbac, Loïc Favennec, Céline Nourrisson, Maxime Moniot, Philippe Poirier, Charlotte Faure, CHU Clermont-Ferrand, Laboratoire Microorganismes : Génome et Environnement (LMGE), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), and Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)

Subjects
030231 tropical medicine, Microsporidiosis, Pathology and Forensic Medicine, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Multiplex polymerase chain reaction, parasitic diseases, Medicine, Multiplex, Enterocytozoon bieneusi, 0303 health sciences, biology, 030306 microbiology, business.industry, fungi, Cryptosporidium, [SDV.MHEP.HEG]Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, medicine.disease, biology.organism_classification, Virology, Encephalitozoon intestinalis, 3. Good health, Microsporidia, Molecular Medicine, Encephalitozoon, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, business
Abstract

International audience; Microsporidiosis and cryptosporidiosis are associated with chronic diarrhea in immunocompromised patients. The objectives of this study were to: i) assess a multiplex quantitative PCR assay targeting Cryptosporidium spp and the microsporidian Enterocytozoon bieneusi and Encephalitozoon spp, and ii) provide an update on the epidemiology of these pathogens. A prospective study was conducted from January 2017 to January 2019. Performance of the assay was assessed, and all cryptosporidia and microsporidia isolates were genotyped. The sensitivity of the multiplex PCR method reached 1 copy/μL for each targeted pathogen. The sensitivity of co-proantigen testing in the diagnosis of cryptosporidiosis was 73%. The sensitivity of microscopy in the diagnosis of cryptosporidiosis was 64%, and microsporidiosis, 50%. Among the 456 patients included, 14 were positive for Cryptosporidium spp (4 different species); 5, for E. bieneusi; and 2, for Encephalitozoon intestinalis. The overall prevalence of cryptosporidia was 3.1%, and of microsporidia, 1.5%; in kidney transplant recipients (n = 82), corresponding values were 7.3% and 2.4% (6 and 2 patients), respectively. Two cases of E. intestinalis infection were diagnosed in children who had traveled to the tropics. This study is the first to assess a multiplex quantitative PCR method for the simultaneous diagnosis of intestinal microsporidiosis and cryptosporidiosis. The highest prevalences of both pathogens were observed in kidney transplant recipients

Published
2021

12. Soil contamination by Echinococcus multilocularis in rural and urban vegetable gardens in relation to fox, cat and dog faecal deposits

Author

Christophe Caillot, Carine Peytavin de Garam, Jenny Knapp, Sandra Courquet, Vanessa Bastid, Franck Boué, Jean-Marc Boucher, Vincent Scalabrino, Gérald Umhang, Camille Renault, Laurence Millon, Marie-Lazarine Poulle, Abdou Malik da Silva, Matthieu Bastien, Marine Faisse, Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]), Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Laboratoire de la rage et de la faune sauvage de Nancy (LRFSN), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques (LCBPT - UMR 8601), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire Chrono-environnement (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Service de parasitologie et mycologie [CHRU de Besançon], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre de Recherche et de Formation en Eco-éthologie (2C2A-CERFE), Université de Reims Champagne-Ardenne (URCA), This work was supported by the 'Zones Ateliers'network and the Conseil Départemental des Ardennes, Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut de Recherche pour le Développement (IRD), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE)

Subjects
Veterinary medicine, Soil test, Environmental contamination, Veterinary (miscellaneous), [SDV]Life Sciences [q-bio], 030231 tropical medicine, Foxes, Alveolar echinococcosis, Infectious and parasitic diseases, RC109-216, Echinococcus multilocularis, 030308 mycology & parasitology, Foodborne parasites, 03 medical and health sciences, Feces, Soil, 0302 clinical medicine, Dogs, Soil flotation, Vegetables, Animals, Carnivore, Soil-transmitted parasites, 2. Zero hunger, 0303 health sciences, Copro-qPCR, Repeated sampling, biology, biology.organism_classification, Soil contamination, Molecular analysis, Infectious Diseases, Insect Science, Cats, Animal Science and Zoology, Parasitology, Gardens, Research Article
Abstract

Echinococcus multilocularis eggs are deposited on the ground with the faeces of the carnivore definitive hosts. A reliable assessment of the spatial distribution of E. multilocularis eggs in environments used by humans is crucial for the prevention of alveolar echinococcosis (AE). This study was conducted in 192 rural and 71 urban vegetable gardens in AE endemic areas of north-eastern France. Its objective was to explore the relationship between the spatial distribution of E. multilocularis estimated from the collection and molecular analysis of two types of samples: faeces and soil. A total of 1024 carnivore faeces and 463 soil samples were collected and analysed by real-time PCR. No fox droppings and no positive soil samples were collected from the urban gardens. Positive soil samples, positive carnivore faeces, or both, were found in 42%, 24% and 6% of the sampled rural gardens, respectively. No significant association was found between the detection of E. multilocularis in soil samples collected from 50 gardens during a single sampling session and the extent and frequency of deposits of fox and cat faeces collected during repeated sampling sessions conducted in the previous months. In 19/50 gardens, E. multilocularis was detected in the soil while no positive faeces had been collected in the previous 12 months. Conversely, in 8/50 gardens, no soil samples were positive although positive faeces had been collected in the previous months. Collecting and analysing faeces provide information on soil contamination at a given time, while analysing soil samples provides an overview of long-term contamination.Contamination du sol par Echinococcus multilocularis dans des jardins potagers ruraux et urbains en relation avec les dépôts fécaux de renards, de chats et de chiens.Les œufs d’Echinococcus multilocularis sont déposés sur le sol avec les fèces des carnivores hôtes définitifs. Une évaluation fiable de la distribution spatiale des œufs d’E. multilocularis dans les environnements utilisés par l’homme est cruciale pour la prévention de l’échinococcose alvéolaire (EA). La présente étude a été conduite dans 192 jardins potagers ruraux et 71 jardins potagers urbains des zones endémiques d’EA du nord-est de la France. Son objectif était d’explorer la relation entre la distribution spatiale d’E. multilocularis estimée à partir de la collecte et de l’analyse moléculaire de deux types d’échantillons : des fèces et du sol. Au total, 1024 fèces et 463 échantillons de sol ont été collectés et analysés par PCR en temps réel. Aucun excrément de renard et aucun échantillon de sol positif n’a été collecté dans les jardins urbains. Des échantillons de sol positifs, des fèces de carnivores positives ou les deux ont été trouvés dans 42 %, 24 % et 6 % des jardins ruraux échantillonnés. Aucune association significative n’a été trouvée entre la détection d’E. multilocularis dans les échantillons de sol collectés dans 50 potagers lors d’une unique session d’échantillonnage et l’importance et la fréquence des dépôts de fèces de renards et de chats collectées lors d’échantillonnages répétés conduits au cours des mois précédents. Dans 19/50 potagers, E. multilocularis a été détecté dans le sol alors qu’aucun excrément positif n’avait été collectés dans les 12 mois précédents. A l’inverse, dans 8/50 potagers aucun échantillon de sol n’était positif alors que des fèces positives avait été collectées dans les mois précédents. La collecte et l’analyse de fèces renseignent sur la contamination du sol à un instant donné, alors que l’analyse d’échantillons de sol fournissent un aperçu de la contamination à long terme.

Published
2021

13. Epidemiology of Cryptosporidiosis in France from 2017 to 2019

Author

Costa, Damien, Razakandrainibe, Romy, Valot, Stéphane, Vannier, Margot, Sautour, Marc, Basmaciyan, Louise, Gargala, Gilles, Viller, Venceslas, Lemeteil, Denis, Ballet, Jean-Jacques, Dalle, Frédéric, Favennec, Loïc, Bastien, Patrick, Sterkers, Yvon, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), CHU Rouen, Normandie Université (NU), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Dijon, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA)

Subjects
0301 basic medicine, Microbiology (medical), medicine.medical_specialty, Cryptosporidium infection, 030106 microbiology, 030231 tropical medicine, Microbiology, Article, 03 medical and health sciences, 0302 clinical medicine, Common species, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Virology, Environmental health, Epidemiology, medicine, Young adult, Genotyping, lcsh:QH301-705.5, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, biology, Transmission (medicine), business.industry, cryptosporidiosis, biology.organism_classification, medicine.disease, 3. Good health, Diarrhea, Cryptosporidium parvum, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, lcsh:Biology (General), epidemiology, France, medicine.symptom, business
Abstract

Cryptosporidiosis is currently recognized worldwide as a leading cause of moderate to severe diarrhea. In Europe, large water- and foodborne outbreaks have been reported, highlighting the widespread distribution of the parasite and its important health impact. Surveillance networks have been progressively set up and the aim of this study was to present recent epidemiological data obtained in France from 2017 to 2019 by the National Reference Center—Expert Laboratory of cryptosporidiosis (Centre National de Référence–Laboratoire Expert cryptosporidioses CNR-LE). Data were obtained from online reports of volunteer network participants and stools were sent to the CNR-LE for species identification and GP60 genotyping. During this period, data from 750 online reports were available. Cryptosporidiosis occurred predominantly in young children (&lt, 5 years old) and in young adults, especially during late summer. Most patients were immunocompetent (60%), and deaths were reported only in immunocompromised patients. Cryptosporidium parvum was largely predominant (72% of cases) over C. hominis (24%) and some other uncommon species. C. parvum GP60 subtypes IIa and IId were the most represented, which suggests frequent zoonotic transmission. For C. hominis, subtypes IbA10G2 and IaA22R2 were predominant.

Published
2020
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14. Outbreak of Amazonian Toxoplasmosis: A One Health Investigation in a Remote Amerindian Community

Author

Romain Blaizot, Cécile Nabet, Laure Laghoe, Benjamin Faivre, Sandie Escotte-Binet, Felix Djossou, Emilie Mosnier, Fanny Henaff, Denis Blanchet, Aurélien Mercier, Marie-Laure Dardé, Isabelle Villena, Magalie Demar, Service des maladies infectieuses, Hopital Andree Rosemond, Centre Hospitalier Andrée Rosemon [Cayenne, Guyane Française], Ecosystemes Amazoniens et Pathologie Tropicale (EPat), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Guyane (UG), Institut Pierre Louis d'Epidémiologie et de Santé Publique (iPLESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Centre National de Référence (CNR) Toxoplasmose/Toxoplasma Biological Resource Center (BRC) (CNR Toxoplasmose-Toxoplasma BRC), CHU Limoges, Unité des Maladies Infectieuses et Tropicales (UMIT), Laboratoire Hospitalo-Universitaire de Parasitologie-Mycologie, Coordination Régionale de la lutte contre le Virus de L'Immunodéficience Humaine (COREVIH)-Centre Hospitalier Andrée Rosemon [Cayenne, Guyane Française]-Université des Antilles (UA), Neuroépidémiologie Tropicale (NET), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), and Gestionnaire, HAL Sorbonne Université 5

Subjects
0301 basic medicine, Microbiology (medical), medicine.medical_specialty, parasitology, 030106 microbiology, Immunology, lcsh:QR1-502, Microbiology, lcsh:Microbiology, Disease Outbreaks, 03 medical and health sciences, Cellular and Infection Microbiology, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Environmental health, Epidemiology, medicine, Humans, One Health, indigenous, Original Research, 2. Zero hunger, biology, outbreak, Transmission (medicine), Public health, Zoonosis, Toxoplasma gondii, Outbreak, 15. Life on land, biology.organism_classification, medicine.disease, Toxoplasmosis, rainforest (Amazon forest), 3. Good health, French Guiana, 030104 developmental biology, Infectious Diseases, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Toxoplasma, toxoplasmosis
Abstract

International audience; Background: Toxoplasma gondii is a parasite of worldwide importance but its burden in indigenous communities remains unclear. In French Guiana, atypical strains of T. gondii originating from a complex rainforest cycle involving wild felids have been linked to severe infections in humans. These cases of Amazonian toxoplasmosis are sporadic and outbreaks are rarely described. We report on the investigation of an outbreak of acute toxoplasmosis in a remote Amerindian village. We discuss the causes and consequences of this emergence.Methods: In May 2017, during the rainy season and following an episode of flooding, four simultaneous cases of acute toxoplasmosis were serologically confirmed in two families living the village. Other non-diagnosed cases were then actively screened by a medical team along with epidemiological investigations. Inhabitants from nine households were tested for T. gondii antibodies and parasite DNA by PCR when appropriate. Samples of water, cat feces and cat rectal swabs, soil, and meat were tested for T. gondii DNA by PCR. Positive PCR samples with sufficient DNA amounts were genotyped using 15 microsatellite markers.Results: Between early May and early July 2017, out of 54 tested inhabitants, 20 cases were serologically confirmed. A fetus infected at gestational week 10 died but other cases were mild. Four patients tested positive for parasite DNA and two identical strains belonging to an atypical genotype could be isolated from unrelated patients. While domestic cats had recently appeared in the vicinity, most families drank water from unsafe sources. Parasite DNA was recovered from one water sample and nine soil samples. Three meat samples tested positive, including wild and industrial meat.Conclusions: The emergence of toxoplasmosis in such a community living in close contact with the Amazon rainforest is probably multifactorial. Sedentary settlements have been built in the last few decades without providing safe water sources, increasing the risk of parasite circulation in cases of dangerous new habits such as cat domestication. Public health actions should be implemented in these communities such as safe water supply, health recommendations, and epidemiological surveillance of acute toxoplasmosis. A “One Health” strategy of research involving medical anthropology, veterinary medicine, and public health needs to be pursued for a better understanding of the transmission routes and the emergence of this zoonosis.

Published
2020

15. Fluorescent bead-based serological detection of Toxoplasma gondii infection in chickens

Author

Martin Koethe, Benedikt T. Fabian, Isabelle Villena, Gereon Schares, Frank Seeber, Dominique Aubert, Berit Bangoura, Franz Josef Conraths, Fatima Hedar, Pavlo Maksimov, Robert Koch Institute [Berlin] (RKI), Friedrich-Loeffler-Institut (FLI), Leipzig University, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), and Centre Hospitalier Universitaire de Reims (CHU Reims)

Subjects
0301 basic medicine, Serum, Multiplexing, Serology, 0302 clinical medicine, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Direct agglutination test, Bioassay, Multiplex, SAG1, Fluorescent Antibody Technique, Indirect, 2. Zero hunger, medicine.diagnostic_test, Primary and secondary antibodies, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, MAT, ELISA, Antibody, Toxoplasma, Magnetic-Capture PCR, 030231 tropical medicine, TOXOSOURCES, Toxoplasma gondii, Antigens, Protozoan, Enzyme-Linked Immunosorbent Assay, Luminex assay, Biology, Immunofluorescence, Microbiology, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, Antigen, parasitic diseases, medicine, Animals, Serologic Tests, lcsh:RC109-216, Poultry Diseases, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, Research, biology.organism_classification, Virology, IFAT, 030104 developmental biology, Toxoplasmosis, Animal, biology.protein, Parasitology, Chickens, Real-time PCR
Abstract

Background Free-ranging chickens are often infected with Toxoplasma gondii and seroconvert upon infection. This indicates environmental contamination with T. gondii. Methods Here, we established a bead-based multiplex assay (BBMA) using the Luminex technology for the detection of T. gondii infections in chickens. Recombinant biotinylated T. gondii surface antigen 1 (TgSAG1bio) bound to streptavidin-conjugated magnetic Luminex beads served as antigen. Serum antibodies were detected by a fluorophore-coupled secondary antibody. Beads of differing color codes were conjugated with anti-chicken IgY or chicken serum albumin and served for each sample as an internal positive or negative control, respectively. The assay was validated with sera from experimentally and naturally infected chickens. The results were compared to those from reference methods, including other serological tests, PCRs and bioassay in mice. Results In experimentally infected chickens, the vast majority (98.5%, n = 65/66) of birds tested seropositive in the BBMA. This included all chickens positive by magnetic-capture PCR (100%, n = 45/45). Most, but not all inoculated and TgSAG1bio-BBMA-positive chickens were also positive in two previously established TgSAG1-ELISAs (TgSAG1-ELISASL, n = 61/65; or TgSAG1-ELISASH, n = 60/65), or positive in an immunofluorescence assay (IFAT, n = 64/65) and in a modified agglutination test (MAT, n = 61/65). All non-inoculated control animals (n = 28/28, 100%) tested negative. In naturally exposed chickens, the TgSAG1bio-BBMA showed a high sensitivity (98.5%; 95% confidence interval, CI: 90.7–99.9%) and specificity (100%; 95% CI: 85.0–100%) relative to a reference standard established using ELISA, IFAT and MAT. Almost all naturally exposed chickens that were positive in bioassay or by PCR tested positive in the TgSAG1bio-BBMA (93.5%; 95% CI: 77.1–98.9%), while all bioassay- or PCR-negative chickens remained negative (100%; 95% CI: 85.0–100%). Conclusions The TgSAG1bio-BBMA represents a suitable method for the detection of T. gondii infections in chickens with high sensitivity and specificity, which is comparable or even superior to other tests. Since assays based on this methodology allow for the simultaneous analysis of a single biological sample with respect to multiple analytes, the described assay may represent a component in future multiplex assays for broad serological monitoring of poultry and other farm animals for various pathogens.

Published
2020

16. Two new phlebotomine sandflies (Diptera: Psychodidae) from the forest edge in Madagascar: the anthropophilic Phlebotomus artemievi sp. nov. and Sergentomyia maroantsetra ensis sp. nov

Author

Sébastien Boyer, Jérôme Depaquit, Jean-Philippe Martinet, Luciano Michaël Tantely, Christopher D. Golden, Fano José Randrianambinintsoa, Vincent Robert, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Unité d'Entomologie Médicale [Antananarivo, Madagascar] (IPM), Institut Pasteur de Madagascar, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP), Hôpital Maison Blanche, Centre Hospitalier Universitaire de Reims (CHU Reims), Harvard T.H. Chan School of Public Health, Madagascar Health and Environmental Research [Maroantsetra, Madagascar] (MAHERY), Institut Pasteur du Cambodge, Réseau International des Instituts Pasteur (RIIP), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), and Field data collection was funded by the Madagascar Health and Environmental Research (MAHERY) team and the Institut Pasteur de Madagascar.

Subjects
Biotope, Male, 030231 tropical medicine, Zoology, Phlebotomus artemievi sp. nov, Disease Vectors, Forests, Madaphlebotomus, 030308 mycology & parasitology, 03 medical and health sciences, 0302 clinical medicine, Anthropophily, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Natural park, Madagascar, Animals, Disease ecology, Psychodidae, Ecosystem, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, 0303 health sciences, General Veterinary, biology, General Medicine, 15. Life on land, biology.organism_classification, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Insect Science, Phlebotomus, Ensis, Vector ecology, Phlebotomine sandflies, Parasitology, Female, Morphological and molecular taxonomy, Sergentomyia maroantsetraensis sp. nov
Abstract

International audience; A few data are related to the anthropophily of Malagasy Phlebotomine sandflies. Prior studies focussed mainly to inventories and description of new species. Our goal was to emphasize the anthropophily of Malagasy Phlebotomine sandflies. We worked in the Makira region, using two simultaneous methods: human landing catches (HLC) and CDC light traps. We collected sandflies in three rural communities adjacent to the Makira Natural Park. In each community, three different biotopes were sampled: within community settlements; at the edge of forest, typically in agricultural land; and within the forest. We collected 61 sandflies belonging to two new species presently described: Phlebotomus artemievi sp. nov. and Sergentomyia maroantsetraensis sp. nov. These sandflies were caught exclusively in the forest edge biotope. None were captured within communities or within forests. HLC provided 97% of the collected sandflies, corresponding to a human-biting rate of 15 females per human per night. CDC provided only two females. Ph. artemievi sp. nov. was predominantly captured by HLC and appears to be highly anthropophilic. Here, we update the behavioural ecology of sandflies and describe two new species. Further research is required to understand their vector competence and their ability to transmit arboviruses and other pathogens such as Leishmania.

Published
2020

17. Use of the bivalve Dreissena polymorpha as a biomonitoring tool to reflect the protozoan load in freshwater bodies

Author

Dominique Aubert, Elodie Géba, Catherine Cazeaux, Jitender P. Dubey, Alain Geffard, Fanny Bastien, Stéphanie La Carbona, Mélissa Palos Ladeiro, Isabelle Villena, Loïc Durand, Sandy Escotte, Aurélie Bigot-Clivot, Isabelle Bonnard, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Actalia [Saint-Lô], Animal Parasitic Diseases Laboratory [Beltsville, USA], United States Department of Agriculture (USDA)-USDA Agricultural Research Service [Beltsville, Maryland], and USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service

Subjects
animal structures, Environmental Engineering, Freshwater bivalve, animal diseases, 0208 environmental biotechnology, Cryptosporidiosis, Cryptosporidium, Zoology, Fresh Water, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Dreissena, parasitic diseases, Biomonitoring, Animals, 14. Life underwater, Waste Management and Disposal, Ecosystem, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Water Science and Technology, Civil and Structural Engineering, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, biology, Ecological Modeling, Aquatic ecosystem, fungi, Mussel, biology.organism_classification, Pollution, 6. Clean water, Bivalvia, 020801 environmental engineering, Cryptosporidium parvum, Zebra mussel, Protozoa, Biological Monitoring
Abstract

Cryptosporidium parvum, Toxoplasma gondii and Giardia duodenalis are worldwide pathogenic protozoa recognized as major causal agents of waterborne disease outbreaks. To overcome the normative process (ISO 15553/2006) limitations of protozoa detection in aquatic systems, we propose to use the zebra mussel (Dreissena polymorpha), a freshwater bivalve mollusc, as a tool for biomonitoring protozoan contamination. Mussels were exposed to three concentrations of C. parvum oocysts, G. duodenalis cysts or T. gondii oocysts for 21 days followed by 21 days of depuration in clear water. D. polymorpha accumulated protozoa in its tissues and haemolymph. Concerning T. gondii and G. duodenalis, the percentage of protozoa positive mussels reflected the contamination level in water bodies. As for C. parvum detection, oocysts did accumulate in mussel tissues and haemolymph, but in small quantities, and the limit of detection was high (between 50 and 100 oocysts). Low levels of T. gondii (1–5 oocysts/mussel) and G. duodenalis (less than 1 cyst/mussel) were quantified in D. polymorpha tissues. The ability of zebra mussels to reflect contamination by the three protozoa for weeks after the contamination event makes them a good integrative matrix for the biomonitoring of aquatic ecosystems.

Published
2020

18. Toxoplasma gondii-specific IgG avidity testing in pregnant women

Author

Isabelle Villena, Laetitia Maria Kortbeek, Hervé Pelloux, Peter L. Chiodini, Birgitta Evengård, Cécile Garnaud, Eskild Petersen, Marie-Pierre Brenier-Pinchart, Hélène Fricker-Hidalgo, Carmen Costache, Małgorzata Paul, Florence Robert-Gangneux, Valeria Meroni, Míriam J. Álvarez-Martínez, Edward Guy, CHU Grenoble, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Umeå University, University of Barcelona, Aarhus University [Aarhus], National Institute for Public Health and the Environment [Bilthoven] (RIVM), Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Iuliu Hatieganu University of Medicine & Pharmacy, Poznan University of Medical Sciences [Poland] (PUMS), London School of Hygiene and Tropical Medicine (LSHTM), Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB), Centre Hospitalier Universitaire [Grenoble] (CHU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université d'Angers (UA)-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )

Subjects
0301 basic medicine, Microbiology (medical), [SDV]Life Sciences [q-bio], 030106 microbiology, Antibody Affinity, Avidity testing, Toxoplasma gondii, chemical and pharmacologic phenomena, Serology, 03 medical and health sciences, 0302 clinical medicine, Pregnancy, parasitic diseases, Medicine, Humans, Avidity, 030212 general & internal medicine, Congenital toxoplasmosis, biology, business.industry, General Medicine, Specific igg, Igg avidity, biology.organism_classification, medicine.disease, Toxoplasmosis, 3. Good health, Infectious Diseases, Immunoglobulin G, Pregnancy Complications, Parasitic, Immunology, Female, business, Toxoplasma
Abstract

International audience; Background - The parasite Toxoplasma gondii can cause congenital toxoplasmosis following primary infection in a pregnant woman. It is therefore important to distinguish between recent and past infection when both T. gondii-specific IgM and IgG are detected in a single serum in pregnant women. Toxoplasma gondii-specific IgG avidity testing is an essential tool to help to date the infection. However, interpretation of its results can be complex. Objectives - To review the benefits and limitations of T. gondii-specific avidity testing in pregnant women, to help practitioners to interpret the results and adapt the patient management. Sources - PubMed search with the keywords avidity, toxoplasmosis and Toxoplasma gondii for articles published from 1989 to 2019. Content - Toxoplasma gondii-specific IgG avidity testing remains a key tool for dating a T. gondii infection in immunocompetent pregnant women. Several commercial assays are available and display comparable performances. A high avidity result obtained on a first-trimester serum sample is indicative of a past infection, which occurred before pregnancy. To date, a low avidity result must still be considered as non-informative to date the infection, although some authors suggest that very low avidity results are highly suggestive of recent infections depending on the assay. Interpretation of low or grey zone avidity results on a first-trimester serum sample, as well as any avidity result on a second-trimester or third-trimester serum sample, is more complex and requires recourse to expert toxoplasmosis laboratories. Implications - Although used for about 30 years, T. gondii-specific avidity testing has scarcely evolved. The same difficulties in interpretation have persisted over the years. Some authors have proposed additional thresholds to exclude an infection of

Published
2020

19. In Vitro and In Vivo Activity of Anogeissus leiocarpa Bark Extract and Isolated Metabolites against Toxoplasma gondii

Author

Jérémy Spalenka, Jane Hubert, Dominique Aubert, Isabelle Villena, Jean-Hugues Renault, Laurence Voutquenne-Nazabadioko, Sandie Escotte-Binet, Nicolas Borie, Frédéric Velard, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Biomatériaux et inflammation en site osseux - EA 4691 (BIOS), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), and Centre Hospitalier Universitaire de Reims (CHU Reims)

Subjects
natural products, Population, Pharmaceutical Science, Toxoplasma gondii, [CHIM.THER]Chemical Sciences/Medicinal Chemistry, 01 natural sciences, complex mixtures, Analytical Chemistry, Mice, centrifugal partition chromatography, Combretaceae, Drug Discovery, parasitic diseases, Plant Bark, Parasite hosting, Animals, chemosensitivity, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, education, Pharmacology, education.field_of_study, biology, Traditional medicine, Anogeissus leiocarpa, 010405 organic chemistry, Plant Extracts, Organic Chemistry, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, biology.organism_classification, Leiocarpa, 0104 chemical sciences, 3. Good health, Malaria, Plant Leaves, 010404 medicinal & biomolecular chemistry, Complementary and alternative medicine, visual_art, visual_art.visual_art_medium, Molecular Medicine, Bark, Toxoplasma
Abstract

Toxoplasma gondii, belonging to the Apicomplexa phylum, is a cosmopolitan protozoan parasite that affects at least 30% of the worldʼs population. In West Africa, the leaves and bark of the tree species Anogeissus leiocarpa (DC.) Guill. & Perr. are used against zoonosis in traditional medicine and play a key role in controlling diseases induced by Apicomplexans such as malaria. In this study, extracts, fractions, and pure compounds obtained from an ethanol extract of the bark of A. leiocarpa were evaluated against T. gondii infection in vitro and in vivo. The crude bark extract showed significant activity on tachyzoites from the T. gondii RH strain (IC50 = 59.30 µg/mL). The crude bark extract without tannins and pure trachelosperogenin E purified by centrifugal partition chromatography showed the highest activity (IC50s = 12.83 and 26.63 µg/mL, respectively) with satisfying selectivity indexes of 9.61 and 9.75, respectively. The crude bark extract without tannins and pure trachelosperogenin E were able to significantly inhibit host cell invasion by the parasite in vitro, while the crude bark extract without tannins was able to increase mice survival in our murine model of chronic toxoplasmosis. These results provide new biological data for natural compounds that could enhance the current panoply of treatments against toxoplasmosis.

Published
2020

20. Cryptosporidium spp., Giardia duodenalis and Toxoplasma gondii detection in fresh vegetables consumed in Marrakech, Morocco

Author

Yassine Amraouza, Isabelle Villena, Sandie Escotte-Binet, Jamaleddine Hafid, Dominique Aubert, Pierre Flori, Salma Berrouch, Université Cadi Ayyad [Marrakech] (UCA), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Physiopathologie et biothérapies des infections muqueuses (GIMAP), Centre International de Recherche en Infectiologie - UMR (CIRI), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM), Centre Hospitalier Universitaire de Reims (CHU Reims), Dubois, laurence, Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM), Centre International de Recherche en Infectiologie (CIRI), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Veterinary medicine, 030231 tropical medicine, Fresh vegetables, [SDV.TOX.TCA]Life Sciences [q-bio]/Toxicology/Toxicology and food chain, 03 medical and health sciences, 0302 clinical medicine, parasitic diseases, Medicine, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, 2. Zero hunger, biology, business.industry, Toxoplasma gondii, Cryptosporidium, Articles, General Medicine, Contamination, biology.organism_classification, Contaminated water, protozoan parasites, Marrakech, qPCR, [SDV.TOX.TCA] Life Sciences [q-bio]/Toxicology/Toxicology and food chain, Giardia duodenalis, business, [SDV.MP.PAR] Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology
Abstract

Background: Protozoan parasites such as Toxoplasma gondii, Giardia duodenalis, and Cryptosporidium spp., can be transmitted to humans via accidental consumption of contaminated water, fresh produce and foodstuffs. There is a lack of epidemiological data about these pathogens in Morocco. Hence the aim of this study, which is the determination of their prevalence in some leafy greens and root vegetables sold in Marrakech. Methods: A total of 132 vegetable samples including carrot, coriander, lettuce, parsley and radish were purchased monthly from three different markets in Marrakech from March 2017 to January 2018, pre-treated and subjected to microscopic and molecular analyses. Results: Of the 132 samples of vegetables analyzed by qPCR, the overall rate of protozoan was 21.21% (28/132); 22 samples were found to be contaminated with T. gondii, 6 with G. duodenalis, and none was positive for C. parvum/hominis. Whereas, modified Ziehl-Neelsen staining allowed the detection of Cryptosporidium spp. in 3% (4/132) of examined samples. Conclusion: This survey on the presence of protozoan parasites in fresh vegetables revealed that vegetables sold in Marrakech are contaminated by these protozoan parasites, as it showed that leafy green vegetables were more susceptible for parasitic contamination than root ones. Keywords: Fresh vegetables; protozoan parasites; Marrakech; qPCR.

Published
2020

21. Update on Giardia : Highlights from the seventh International Giardia and Cryptosporidium Conference

Author

Andre G. Buret, Loïc Favennec, Simone M. Cacciò, Staffan G. Svärd, University of Calgary, Istituto Superiore di Sanita [Rome], Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), and Uppsala University

Subjects
0301 basic medicine, Giardiasis, medicine.medical_specialty, Epidemiology, Veterinary (miscellaneous), Ecology (disciplines), Cell- och molekylärbiologi, Pharmacy, Review Article, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, Basic knowledge, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, medicine, lcsh:RC109-216, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, biology, business.industry, Public health, Giardia, Cryptosporidium, Genomics, 030108 mycology & parasitology, Public relations, biology.organism_classification, 3. Good health, 030104 developmental biology, Infectious Diseases, One Health, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Insect Science, Animal Science and Zoology, Parasitology, business, Cell and Molecular Biology
Abstract

Although Giardia duodenalis is recognized as one of the leading causes of parasitic human diarrhea in the world, knowledge of the mechanisms of infection is limited, as the pathophysiological consequences of infection remain incompletely elucidated. Similarly, the reason for and consequences of the very specific genome-organization in this parasite with 2 active nuclei is only partially known. Consistent with its tradition, the 7th International Giardia and Cryptosporidium Conference (IGCC 2019) was held from June 23 to 26, 2019, at the Faculty of Medicine and Pharmacy of the University of Rouen-Normandie, France, to discuss current research perspectives in the field. This renowned event brought together an international delegation of researchers to present and debate recent advances and identify the main research themes and knowledge gaps. The program for this interdisciplinary conference included all aspects of host-parasite relationships, from basic research to applications in human and veterinary medicine, as well as the environmental issues raised by water-borne parasites and their epidemiological consequences. With regard to Giardia and giardiasis, the main areas of research for which new findings and the most impressive communications were presented and discussed included: parasite ecology and epidemiology of giardiasis, Giardia-host interactions, and cell biology of Giardia, genomes and genomic evolution. The high-quality presentations discussed at the Conference noted breakthroughs and identified new opportunities that will inspire researchers and funding agencies to stimulate future research in a “one health” approach to improve basic knowledge and clinical and public health management of zoonotic giardiasis. Bien que Giardia duodenalis soit reconnu comme l’une des principales causes de diarrhée parasitaire humaine dans le monde, la connaissance des mécanismes de l’infection est limitée, car ses conséquences physiopathologiques restent incomplètement élucidées. De même, la raison et les conséquences de l’organisation génomique très spécifique de ce parasite à deux noyaux actifs ne sont que partiellement connues. Conformément à sa tradition, la 7ème Conférence internationale sur Giardia et Cryptosporidium (IGCC 2019) s’est tenue du 23 au 26 juin 2019, à la Faculté de médecine et de pharmacie de l’Université de Rouen-Normandie, France, pour discuter des perspectives de recherche actuelles dans ce champ. Cet événement de renom a réuni une délégation internationale de chercheurs pour présenter et débattre des avancées récentes et identifier les principaux thèmes de recherche et les lacunes dans les connaissances. Le programme de cette conférence interdisciplinaire comprenait tous les aspects des relations hôtes-parasites, de la recherche fondamentale aux applications en médecine humaine et vétérinaire, ainsi que les problèmes environnementaux soulevés par les parasites d’origine hydrique et leurs conséquences épidémiologiques. En ce qui concerne Giardia et la giardiase, les principaux domaines de recherche pour lesquels de nouvelles découvertes et les communications les plus impressionnantes ont été présentées et discutées comprenaient : l’écologie parasitaire et l’épidémiologie de la giardiase, les interactions Giardia-hôte, la biologie cellulaire de Giardia, les génomes et l’évolution génomique. Les présentations de haute qualité discutées lors de la conférence ont noté des avancées et identifié de nouvelles opportunités qui inspireront les chercheurs et les agences de financement à stimuler la recherche future dans une approche « une seule santé » pour améliorer les connaissances de base et la gestion clinique et de santé publique de la giardiase zoonotique.

Published
2020

22. Mosquitoes of North-Western Europe as Potential Vectors of Arboviruses: A Review

Author

Jean-Philippe Martinet, Anna-Bella Failloux, Hubert Ferté, Francis Schaffner, Jérôme Depaquit, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors, Institut Pasteur [Paris], Hôpital Maison Blanche, Centre Hospitalier Universitaire de Reims (CHU Reims), Universität Zürich [Zürich] = University of Zurich (UZH), Francis Schaffner Consultancy, This research received no external funding, The authors thank Matthieu L. Kaltenbach for proof-reading this manuscript., University of Zurich, Martinet, Jean-Philippe, Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), and Institut Pasteur [Paris] (IP)

Subjects
0301 basic medicine, 10078 Institute of Parasitology, chikungunya, viruses, Population Dynamics, Review, medicine.disease_cause, 0302 clinical medicine, Communicable Diseases, Imported, Aedes, 600 Technology, Aedes cinereus, Chikungunya, transmission, virus diseases, Biodiversity, 3. Good health, Europe, Culex, Infectious Diseases, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Aedes albopictus, Anopheles claviger, 030231 tropical medicine, 030106 microbiology, education, Zoology, 610 Medicine & health, Mosquito Vectors, Biology, Arbovirus Infections, West Nile, 03 medical and health sciences, Zika, Virology, Culex pipiens, parasitic diseases, Anopheles, medicine, Animals, Humans, Aedes rusticus, Culiseta, Usutu, fungi, 2725 Infectious Diseases, biology.organism_classification, dengue, Vector (epidemiology), 2406 Virology, 570 Life sciences, biology, Arboviruses
Abstract

Background: The intensification of trade and travel is linked to the growing number of imported cases of dengue, chikungunya or Zika viruses into continental Europe and to the expansion of invasive mosquito species such as Aedes albopictus and Aedes japonicus. Local outbreaks have already occurred in several European countries. Very little information exists on the vector competence of native mosquitoes for arboviruses. As such, the vectorial status of the nine mosquito species largely established in North-Western Europe (Aedes cinereus and Aedes geminus, Aedes cantans, Aedes punctor, Aedes rusticus, Anopheles claviger s.s., Anopheles plumbeus, Coquillettidia richiardii, Culex pipiens s.l., and Culiseta annulata) remains mostly unknown. Objectives: To review the vector competence of both invasive and native mosquito populations found in North-Western Europe (i.e., France, Belgium, Germany, United Kingdom, Ireland, The Netherlands, Luxembourg and Switzerland) for dengue, chikungunya, Zika, West Nile and Usutu viruses. Methods: A bibliographical search with research strings addressing mosquito vector competence for considered countries was performed. Results: Out of 6357 results, 119 references were related to the vector competence of mosquitoes in Western Europe. Eight species appear to be competent for at least one virus. Conclusions: Aedes albopictus is responsible for the current outbreaks. The spread of Aedes albopictus and Aedes japonicus increases the risk of the autochthonous transmission of these viruses. Although native species could contribute to their transmission, more studies are still needed to assess that risk.

Published
2019

23. Multi-centric evaluation of the online MSI platform for the identification of cryptic and rare species of Aspergillus by MALDI-TOF

Author

Anne Cécile Normand, Christine Schuttler, Lise Kristensen, Lilia Hasseine, Frédéric Gabriel, Damien Costa, Dirk Stubbe, Marijke Hendrickx, Sébastien Imbert, Sophie Brun, Hélène Raberin, Renaud Piarroux, Laurence Lachaud, Arnaud Fekkar, C. Bonnal, Sophie Cassaing, CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institut Pierre Louis d'Epidémiologie et de Santé Publique (iPLESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Institut d'Histoire de la Pensée Classique (IHPC), École normale supérieure de Lyon (ENS de Lyon)-Université Lumière - Lyon 2 (UL2)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Infection, Anti-microbiens, Modélisation, Evolution (IAME (UMR_S_1137 / U1137)), Université Paris 13 (UP13)-Université Paris Diderot - Paris 7 (UPD7)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Rouen, Normandie Université (NU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Centre Hospitalier Universitaire de Nice (CHU Nice), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), Immunité et Infection, Université Pierre et Marie Curie - Paris 6 (UPMC)-IFR113-Institut National de la Santé et de la Recherche Médicale (INSERM), WHO Collaborating Center on Prevention and Treatment of Human Echinococcosis, Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre d'Immunologie et des Maladies Infectieuses (CIMI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Service de parasitologie - mycologie [CHU Pitié-Salpétrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), École normale supérieure - Lyon (ENS Lyon)-Université Lumière - Lyon 2 (UL2)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR113-Université Pierre et Marie Curie - Paris 6 (UPMC), and Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)

Subjects
0301 basic medicine, Microbiological Techniques, Species complex, Databases, Factual, [SDV]Life Sciences [q-bio], 030106 microbiology, Rare species, DNA sequencing, 03 medical and health sciences, Species level, Humans, species complex, Sensu stricto, mass spectrometry, Aspergillus species, Aspergillus, cryptic species, Internet, biology, Mass spectrometry, General Medicine, biology.organism_classification, 030104 developmental biology, Infectious Diseases, Evolutionary biology, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Cryptic species, Taxonomy (biology)
Abstract

The taxonomy of Aspergillus species has recently been revolutionized with the introduction of cryptic species and section concepts. However, their species-level identification in routine laboratories remains a challenge. The aim of this study was to prospectively assess the identification accuracy of cryptic species of Aspergillus in various laboratories using the mass spectrometry identification (MSI) platform, an independent and freely accessible online mass spectrometry database. Over a 12-month period, when a select set of MSI users identified cryptic species, they were contacted and requested to send the isolates to our laboratory for sequence-based identification. Sequence and MSI identification results were then compared. During the study period, 5108 Aspergillus isolates were identified using MSI including 1477 (28.9%) cryptic species. A total of 245 isolates that corresponded to 56 cryptic species and 13 sections were randomly selected for DNA sequencing confirmation. Agreement between the two methods was 99.6% at the section level and 66.1% at the species level. However, almost all discrepancies (72/83, 86.7%) were misidentifications between closely related cryptic species belonging to the same section. Fifty-one isolates from noncryptic species were also identified, thus yielding 100% and 92.2% agreement at the section and species level, respectively. Although the MSI fungus database is a reliable tool to identify Aspergillus at the section level, the database still requires adjustment to correctly identify rare or cryptic species at the species level. Nevertheless, the application properly differentiated between cryptic and sensu stricto species in the same section, thus alerting on possible specific isolate characteristics.

Published
2019

24. Pneumocystis Infection Outbreaks in Organ Transplantation Units in France: A Nation-Wide Survey

Author

M. Leterrier, Anne Totet, Céline Damiani, Danièle Maubon, Solène Le Gal, Isabelle Accoceberry, Julie Bonhomme, Pierre Marty, E. Bailly, Ermanno Candolfi, Anne Debourgogne, Laurence Millon, Frédéric Dalle, Anne-Pauline Bellanger, Patrice Le Pape, Denis Pons, Christelle Pomares, Yann Le Meur, Marie Machouard, Marie-Laure Dardé, Laurence Delhaes, Ahmed Abou Bacar, Dominique Toubas, Frédéric Gabriel, Estelle Cateau, Gilles Nevez, Loïc Favennec, Marie-Hélène Rodier, Xavier Iriart, Eric Dannaoui, Laurence Lachaud, Guillaume Desoubeaux, Pierre Flori, Laboratoire Universitaire de Biodiversité et Ecologie Microbienne (LUBEM), Université de Brest (UBO), Laboratoire de Parasitologie et Mycologie (Parasito - Myco - BREST), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Matrice extracellulaire et dynamique cellulaire - UMR 7369 (MEDyC), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Service de parasitologie et de mycologie médicales, Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie, Laboratoire de parasitologie mycologie (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Institut de Parasitologie et de Pathologie Tropicale de Strasbourg, Faculté de Médecine de Strasbourg, Université de Strasbourg, CHRU Brest - Service de Nephrologie (CHU - BREST - Nephrologie), Microbiologie cellulaire et moléculaire et pathogénicité (MCMP), Université Bordeaux Segalen - Bordeaux 2-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Service de parasitologie et mycologie [CHU de Besançon], Centre Hospitalier Régional Universitaire [Besançon] (CHRU Besançon), Laboratoire Chrono-environnement - UFC (UMR 6249) (LCE), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université de Caen Normandie (UNICAEN), Normandie Université (NU), Microbiologie de l'Eau (MDE), Ecologie et biologie des interactions (EBI), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Institut de Parasitologie et de Pathologie Tropicale, UMR-I 01 - AMIENS, Université de Picardie Jules Verne (UPJV), Unité de Parasitologie-Mycologie [CHU HEGP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Université de Limoges (UNILIM), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Université de Bordeaux (UB), Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100 (CEPR), Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Anofel Cryptosporidium National Network, Institut d'Histoire de la Pensée Classique (IHPC), École normale supérieure - Lyon (ENS Lyon)-Université Lumière - Lyon 2 (UL2)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), CHU Bordeaux [Bordeaux], Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Laboratoire de Microbiologie (CHD de la Roche-Sur-Yon), CHD Vendee (La Roche Sur Yon), Cibles et médicaments de l'infection, de l'immunité et du cancer (IICiMed), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN), Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Adaptation et pathogénie des micro-organismes [Grenoble] (LAPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre méditerranéen de médecine moléculaire (C3M), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Gabriel Montpied (CHU), CHU Clermont-Ferrand, Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Hôpital de la Cavale Blanche - CHRU Brest (CHU - BREST ), SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Departments of Medical Parasitology and Mycology, Service de néphrologie, Sagem - SAFRAN Gr., Université de Strasbourg (UNISTRA), Centre National de Référence (CNR) Toxoplasmose/Toxoplasma Biological Resource Center (BRC) (CNR Toxoplasmose-Toxoplasma BRC), CHU Limoges, Service de Parasitologie-Mycologie [CHRU Nancy], Stress, Immunité, Pathogènes (SIMPA), Université de Lorraine (UL), Appareil Digestif Environnement Nutrition (ADEN ), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Groupe Immunité des Muqueuses et Agents Pathogènes (GIMAP), Université Jean Monnet [Saint-Étienne] (UJM), Service de parasitologie et de mycologie, Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre hospitalier universitaire de Nantes (CHU Nantes), Laboratoire Chrono-environnement - CNRS - UFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Infections Parasitaires : Transmission, Physiopathologie et Thérapeutiques (IP-TPT), Service de Santé des Armées-Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)-Institut de Recherche pour le Développement (IRD), Groupe d'Étude des Interactions Hôte-Pathogène (GEIHP), Université d'Angers (UA), Laboratoire de Parasitologie et Mycologiede [CHRU Brest], Laboratoire de parasitologie et de mycologie médicales [CHU Amiens], CHU Amiens-Picardie, Service de parasitologie et mycologie [CHRU de Besançon], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Périnatalité et Risques Toxiques - UMR INERIS_I 1 (PERITOX), Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie-Institut National de l'Environnement Industriel et des Risques, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Côte d'Azur (UCA), CHU Gabriel Montpied [Clermont-Ferrand], Mycologie moléculaire, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), Institut d’Histoire des Représentations et des Idées dans les Modernités (IHRIM), Université Lumière - Lyon 2 (UL2)-École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Université Clermont Auvergne (UCA)-Université Jean Monnet [Saint-Étienne] (UJM), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Service de Santé des Armées, Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)

Subjects
Microbiology (medical), medicine.medical_specialty, Genotype, Pneumocystis carinii, Organ transplantation, Disease Outbreaks, 03 medical and health sciences, 0302 clinical medicine, genotypes, Surveys and Questionnaires, Internal medicine, Humans, Medicine, Pneumocystis jirovecii, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, 030212 general & internal medicine, Genotyping, ComputingMilieux_MISCELLANEOUS, [SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology, Retrospective Studies, Transplant recipients, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, 0303 health sciences, biology, 030306 microbiology, business.industry, Pneumocystis, Pneumonia, Pneumocystis, Outbreak, Organ Transplantation, biology.organism_classification, 3. Good health, Transplantation, Infectious Diseases, Renal transplant, France, business, Pneumocystis Infections
Abstract

The burden of nosocomial Pneumocystis infections in transplantation units in France was evaluated through a retrospective survey. Over 12 years, 16 outbreaks occurred, including 13 among renal transplant recipients (RTRs). We performed Pneumocystis jirovecii genotyping in 5 outbreaks, which suggested that specific strains may have been selected by RTRs.

Published
2019

25. Two new phlebotomine sandfly species (Diptera: Psychodidae) from the Highlands of Madagascar

Author

Jérôme Depaquit, Vincent Robert, Antoine Blavier, Nicole Léger, Fano José Randrianambinintsoa, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), and Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])

Subjects
0301 basic medicine, Male, Veterinary (miscellaneous), Fauna, 030231 tropical medicine, Biodiversity, Zoology, 03 medical and health sciences, 0302 clinical medicine, New taxa, Species Specificity, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Genus, Bionomics, Madagascar, Animals, Andringitra, Ranomafana-Ifanadiana, Psychodidae, ComputingMilieux_MISCELLANEOUS, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, biology, Ecology, Cytochrome b, Genus: Phlebotomus, 030108 mycology & parasitology, 15. Life on land, biology.organism_classification, Sandfly, Sergentomyia, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Infectious Diseases, Insect Science, Phlebotomus, Morphological and molecular taxonomy, Parasitology, Female
Abstract

The Malagasy phlebotomine sandfly fauna includes 17 species: five belong to the genus Phlebotomus, ten to the genus Sergentomyia, and two to the genus Grassomyia. The current article describes Sergentomyia brunhesi sp. nov. and Sergentomyia vistellei sp. nov. from the Malagasy Highlands. Females were described morphologically from specimens collected at Ranomafana–Ifanadiana and Andringitra. Partial molecular sequences of cyt b and 28S rDNA were retrieved for Se. vistellei sp. nov. Waiting new data, we consider these species as ungrouped Sergentomyia. Two new species of Sergentomyia are recorded at higher altitudes in Madagascar. Knowledge of local Biodiversity is increasing. New investigations have to be carried out to describe males, to understand their bionomics, and to identify other potential new species at higher altitudes.

Published
2019

26. Comparative Evaluation of Commercial Concentration Procedures for Human Intestinal Parasite Detection

Author

Damien Costa, Denis Lemeteil, Loïc Favennec, Gilles Gargala, Romy Razakandrainibe, Jean Jacques Ballet, CHU Rouen, Normandie Université (NU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Immunité de l'infection et transplantations, Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU), Appareil Digestif Environnement Nutrition (ADEN ), and Université de Rouen Normandie (UNIROUEN)

Subjects
Adult, Male, 0301 basic medicine, Veterinary medicine, Concentration, Adolescent, [SDV]Life Sciences [q-bio], 030106 microbiology, Clinical Biochemistry, Intestinal parasite, Stool specimen, medicine.disease_cause, Specimen Handling, Comparative evaluation, Feces, Young Adult, 03 medical and health sciences, 0302 clinical medicine, medicine, Helminth, Animals, Humans, Helminths, Parasite hosting, Parasites, 030212 general & internal medicine, Intestinal Diseases, Parasitic, Protozoa, Child, Aged, Aged, 80 and over, biology, Clinical Laboratory Techniques, Diagnostic Tests, Routine, Biochemistry (medical), Infant, Middle Aged, biology.organism_classification, 3. Good health, Parasite, Detection, Stool, Child, Preschool, Parasitic Intestinal Diseases, Female
Abstract

BackgroundEffective stool concentration is essential in microscopically based diagnosis of human intestinal parasite infections.ObjectiveTo compare the performances of 4 concentration commercial kits and 1 homemade procedure in 96 clinical stool specimens that tested positive for the detection of 9 helminth and 8 protozoa parasites.MethodsThe presence or absence of parasite forms was microscopically determined under conditions of standard practice. Also, we established the accuracies, concentration factors, and extraction yields.ResultsNo difference was observed between procedures for preconcentration specimens that tested positive. However, for preconcentration specimens that tested negative, we discovered that the homemade procedure was the most effective, and 2 of the 4 commercial kits were discovered to be satisfactory for routine applications.ConclusionsFor all parasites, procedures with biphasic solvents exhibited higher performances than organic solvent-free procedures. For the first time, the effectiveness of commercial concentration kits has been evaluated on several common stool parasites, and the results suggest that improvement of commercial procedures is possible.

Published
2019

27. The relationship between the presence of antibodies and direct detection of Toxoplasma gondii in slaughtered calves and cattle in four European countries

Author

J. van der Giessen, Simona Cherchi, Henk J. Wisselink, Furio Spano, Javier Guitian, Georgina Limon, Alison Burrells, Gereon Schares, Isabelle Villena, Frank Katzer, Alessia Possenti, Adriana Györke, Marieke Opsteegh, Cecile Dam-Deisz, J.B.W.J. Cornelissen, Edoardo Pozio, Elisabeth A. Innes, Anamaria Balea, Dominique Aubert, National Institute for Public Health and the Environment [Bilthoven] (RIVM), Istituto Superiore di Sanita [Rome], Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Centre Hospitalier Universitaire de Reims (CHU Reims), Wageningen BioVeterinary Research, Wageningen University and Research [Wageningen] (WUR), and Friedrich-Loeffler-Institut (FLI)

Subjects
Serum, 0301 basic medicine, Epidemiology, Antibodies, Protozoan, Serology, 0302 clinical medicine, Mouse bioassay, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Direct agglutination test, Bioassay, ComputingMilieux_MISCELLANEOUS, Immunoassay, biology, Bacteriologie, Bacteriology, Host Pathogen Interaction & Diagnostics, Europe, Detection, Infectious Diseases, Real-time polymerase chain reaction, PCR, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Liver, Molecular Diagnostic Techniques, Antibody, Toxoplasma, Bioinformatica & Diermodellen, Diaphragm, 030231 tropical medicine, Cattle Diseases, Toxoplasma gondii, Sensitivity and Specificity, 03 medical and health sciences, Bio-informatics & Animal models, parasitic diseases, Animals, Epidemiology, Bio-informatics & Animal models, Host Pathogen Interaction & Diagnostics, Epidemiologie, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, Diagnostic Tests, Routine, Bacteriology, biology.organism_classification, Virology, Host Pathogen Interactie & Diagnostiek, Toxoplasmosis, Animal, 030104 developmental biology, Epidemiologie, Bioinformatica & Diermodellen, Immunoglobulin G, Bacteriologie, Host Pathogen Interactie & Diagnostiek, biology.protein, Parasitology, Cattle, Trypsin Digestion
Abstract

In cattle, antibodies to Toxoplasma gondii infection are frequently detected, but evidence for the presence of T. gondii tissue cysts in cattle is limited. To study the concordance between the presence of anti-T. gondii IgG and viable tissue cysts of T. gondii in cattle, serum, liver and diaphragm samples of 167 veal calves and 235 adult cattle were collected in Italy, the Netherlands, Romania and the United Kingdom. Serum samples were tested for anti-T. gondii IgG by the modified agglutination test and p30 immunoblot. Samples from liver were analyzed by mouse bioassay and PCR after trypsin digestion. In addition, all diaphragms of cattle that had tested T. gondii-positive (either in bioassay, by PCR on trypsin-digested liver or serologically by MAT) and a selection of diaphragms from cattle that had tested negative were analyzed by magnetic capture quantitative PCR (MC-PCR). Overall, 13 animals were considered positive by a direct detection method: seven out of 151 (4.6%) by MC-PCR and six out of 385 (1.6%) by bioassay, indicating the presence of viable parasites. As cattle that tested positive in the bioassay tested negative by MC-PCR and vice-versa, these results demonstrate a lack of concordance between the presence of viable parasites in liver and the detection of T. gondii DNA in diaphragm. In addition, the probability to detect T. gondii parasites or DNA in seropositive and seronegative cattle was comparable, demonstrating that serological testing by MAT or p30 immunoblot does not provide information about the presence of T. gondii parasites or DNA in cattle and therefore is not a reliable indicator of the risk for consumers.

Published
2019

28. Environmental transmission of Toxoplasma gondii: Oocysts in water, soil and food

Author

Luz A. de Wit, Brent R. Dixon, Elizabeth VanWormer, Aurélien Dumètre, Lillian Bahia-Oliveira, Karen Shapiro, Isabelle Villena, Vecteurs - Infections tropicales et méditerranéennes (VITROME), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées (IRBA), Institut Hospitalier Universitaire Méditerranée Infection (IHU Marseille), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), and ANR-17-CE21-0005,STRIP,Les réponses aux stress chez les parasites protozoaires d'origine alimentaire Toxoplasma gondii et Cryptosporidium spp(2017)

Subjects
0301 basic medicine, Epidemiology, 030231 tropical medicine, Wildlife, Toxoplasma gondii, Zoology, Biology, lcsh:Infectious and parasitic diseases, Oocyst, Soil, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, parasitic diseases, medicine, Transmission, 2.2 Factors relating to the physical environment, Parasite hosting, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Ecosystem, lcsh:RC109-216, Aetiology, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, Transmission (medicine), Prevention, Aquatic ecosystem, fungi, Water, 030108 mycology & parasitology, Foodborne Illness, medicine.disease, biology.organism_classification, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Protozoan parasite, Toxoplasmosis, 3. Good health, Infectious Diseases, Emerging Infectious Diseases, Good Health and Well Being, Food, Medical Microbiology, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Parasitology, Infection
Abstract

Toxoplasma gondii is a zoonotic protozoan parasite that can cause morbidity and mortality in humans, domestic animals, and terrestrial and aquatic wildlife. The environmentally robust oocyst stage of T. gondii is fundamentally critical to the parasite's success, both in terms of its worldwide distribution as well as the extensive range of infected intermediate hosts. Despite the limited definitive host species (domestic and wild felids), infections have been reported on every continent, and in terrestrial as well as aquatic environments. The remarkable resistance of the oocyst wall enables dissemination of T. gondii through watersheds and ecosystems, and long-term persistence in diverse foods such as shellfish and fresh produce. Here, we review the key attributes of oocyst biophysical properties that confer their ability to disseminate and survive in the environment, as well as the epidemiological dynamics of oocyst sources including domestic and wild felids. This manuscript further provides a comprehensive review of the pathways by which T. gondii oocysts can infect animals and people through the environment, including in contaminated foods, water or soil. We conclude by identifying critical control points for reducing risk of exposure to oocysts as well as opportunities for future synergies and new directions for research aimed at reducing the burden of oocyst-borne toxoplasmosis in humans, domestic animals, and wildlife. Keywords: Toxoplasma gondii, Oocyst, Transmission, Water, Soil, Food

Published
2019

29. Prevalence and Genetic Diversity of Toxoplasma gondii in Free-Ranging Chickens from the Caribbean

Author

Frank Katzer, Patrick Kelly, E.A. Innes, R. Thomas, C. Oura, Clare M. Hamilton, R. Robins, Isabelle Villena, Solange Oliveira, Faculdade de Ciências Médicas Santa Casa de São Paulo [Brazil], Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), and Centre Hospitalier Universitaire de Reims (CHU Reims)

Subjects
Veterinary medicine, Genotype, West Indies, 030231 tropical medicine, Prevalence, Antibodies, Protozoan, Toxoplasma gondii, 030308 mycology & parasitology, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Direct agglutination test, parasitic diseases, Parasite hosting, Animals, Genotyping, ComputingMilieux_MISCELLANEOUS, Poultry Diseases, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, 0303 health sciences, Caribbean island, Original Paper, biology, Brain, Genetic Variation, Antigua and Barbuda, Heart, DNA, Protozoan, biology.organism_classification, 3. Good health, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Toxoplasmosis, Animal, Trinidad and Tobago, Parasitology, Dominica, Chickens, Toxoplasma
Abstract

Purpose Toxoplasma gondii is a zoonotic parasite capable of infecting a wide range of hosts. Free-range chickens are important sentinels in the epidemiology of this parasite as they feed from the ground and are likely to ingest oocysts shed in the faeces of infected cats. Atypical strains of T. gondii are known to dominate in South America where they are associated with more severe disease in humans, yet relatively little is known about the strains circulating in neighbouring Caribbean islands. Methods In this study, hearts and brains were collected from free-range chickens in Antigua and Barbuda (n = 45), Dominica (n = 76) and Trinidad (n = 41), and DNA was extracted for nested ITS1 PCR and PCR–RFLP. Sera were collected and screened for antibodies using the modified agglutination test (MAT). Results Antibodies to T. gondii were detected in 20.5, 38.2 and 17.1% of chickens in Antigua and Barbuda, Dominica and Trinidad, respectively. Toxoplasma gondii DNA was also detected by PCR in 24.4, 17.1 and 17.1% of chickens, respectively, giving an overall prevalence of 31.1, 42.1, and 29.3% for each of the 3 island nations. Results of PCR–RFLP revealed 2 new atypical genotypes (designated ToxoDB #281 and #282) and one Type III (ToxoDB #2) in chickens from Antigua. Partial genotyping of a further 8 isolates (7 from Antigua and one from Trinidad) revealed different allele-types at five or more markers for 7 of the isolates, suggesting atypical genotypes. Conclusions This is the first study to report the prevalence of T. gondii in free-range chickens in Antigua and Barbuda, Dominica and Trinidad and Tobago. It is also the first to report the presence of atypical genotypes in Antigua and Barbuda and Trinidad and Tobago.

Published
2019

30. Prevalence, geographic risk factor, and development of a standardized protocol for fungal isolation in cystic fibrosis: Results from the international prospective study 'MFIP'

Author

Laurence Delhaes, Florent Morio, Wieland Meyer, Jean-Philippe Bouchara, A. Biffi, E. Manso, Gabriella Ricciotti, Rafael Cantón, Patrice Le Pape, Gilles Nevez, Maiz-Luis Carro, Kada Touati, Walter Buzina, Lisa Cariani, Ersilia Fiscarelli, Marc Pihet, Elia Gómez, Frédéric Grenouillet, Françoise Botterel, Veroniek Saegeman, Muriel Cornet, Alain Duhamel, Silvia Campana, Solène Le Gal, Katrien Lagrou, Odile Faure-Cognet, Eric Dannaoui, Sharon C.-A. Chen, Andrew M. Borman, Emmanuel Roilides, Loïc Favennec, Maria Simitsopoulou, Thérapeutique Recombinante Expérimentale (TIMC-IMAG-TheREx), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Hospital Universitario Ramón y Cajal [Madrid], Universidad de Alcalá - University of Alcalá (UAH), Laboratoire de Parasitologie-Mycologie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre hospitalier universitaire de Nantes (CHU Nantes), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Université de Reims Champagne-Ardenne (URCA), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Groupe d'Étude des Interactions Hôte-Pathogène (GEIHP), Université d'Angers (UA), Laboratoire de Parasitologie et Mycologiede [CHRU Brest], Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Mycology Reference Laboratory, Health Protection Agency, Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), The University of Sydney, Third Department of Pediatrics, Aristotle University, Ippokration Hospital of Thessaloniki, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, and Children's Hospital Bambino Gesù IRCCS [Rome]

Subjects
Male, Microbiological Techniques, 0301 basic medicine, Cystic Fibrosis, International Cooperation, [SDV]Life Sciences [q-bio], Cystic fibrosis, Aspergillus fumigatus, Molds, 0302 clinical medicine, Risk Factors, Prevalence, Prospective Studies, Prospective cohort study, ComputingMilieux_MISCELLANEOUS, education.field_of_study, biology, 3. Good health, Aspergillus, Female, medicine.symptom, Cladosporium, Adult, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Filamentous fungi, Lung mycobiota, Population, Context (language use), Specimen Handling, 03 medical and health sciences, Internal medicine, Mycological examination, medicine, Humans, education, Lung Diseases, Fungal, business.industry, Fungi, Sputum, Reproducibility of Results, medicine.disease, biology.organism_classification, Culture Media, 030104 developmental biology, 030228 respiratory system, Pediatrics, Perinatology and Child Health, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

© 2018 Background: Fungi are increasingly recognized for their potential role in contributing to pulmonary damage in Cystic Fibrosis (CF). We therefore designed a prospective international study aimed at (i) determining the prevalence of fungi isolated from sputum samples collected from a large CF population, (ii) comparing the performance of different media used for fungal culture, and (iii) proposing a standardized protocol suitable for CF routine microbiology. Methods: An international, consensually designed prospective study was set up (https://www.ecfs.eu/special-projects/mucofong-international-project). All centers worked according to the same protocol approved by Lille Ethical Committee. CF sputa were inoculated onto eight semi-selective media incubated at 37 °C or 25 °C–30 °C for 15 days, and inspected twice weekly for fungal growth. Results: A total of 469 sputa were collected from patients at 18 European and one Australian CF centers. Positive cultures for fungal growth were significantly associated with patient ages. Aspergillus fumigatus was the most frequently isolated mold. We identified a growing European North-to-South gradient of Scedosporium prevalence, while yeasts, Aspergillus section Fumigati, Cladosporium and Penicillium were significantly more prevalent in the Northern regions. Conclusions: According to the CHi-squared Automatic Interaction Detector method, we propose a consensual protocol based on two media (YPDA or Sabouraud medium, and B(+) medium) to detect the main opportunistic molds in CF context; the use of an additional medium being recommended according to the patient's clinical status. This standardized protocol allows us to have an accurate overview of the respiratory mycobiome on the culturomic side in CF. ispartof: JOURNAL OF CYSTIC FIBROSIS vol:18 issue:2 pages:212-220 ispartof: location:Netherlands status: published

Published
2019

31. Multicentre study to determine the Etest epidemiological cut-off values of antifungal drugs in Candida spp. and Aspergillus fumigatus species complex

Author

Didier Dupont, Jean-Pierre Gangneux, Hélène Guegan, Laurence Lachaud, Milène Sasso, B. Bouteille, Sandrine Houzé, F. Persat, Laurence Delhaes, Damien Costa, Nathalie Bourgeois, Eric Dannaoui, Françoise Botterel, Sophie Cassaing, Loïc Favennec, E. Charpentier, Arnaud Fekkar, M. Salsé, CHU Pontchaillou [Rennes], Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Bordeaux [Bordeaux], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CHU Limoges, Services de Maladies Infectieuses et Tropicales [CHU Bichat], AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hospices Civils de Lyon (HCL), Hôpital Lapeyronie [Montpellier] (CHU), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA)

Subjects
0301 basic medicine, Microbiology (medical), Epidemiological cut-off values, Antifungal Agents, Endpoint Determination, [SDV]Life Sciences [q-bio], 030106 microbiology, Microbial Sensitivity Tests, Candida parapsilosis, Microbiology, Candida tropicalis, 03 medical and health sciences, 0302 clinical medicine, Disk Diffusion Antimicrobial Tests, Drug Resistance, Fungal, Candida krusei, medicine, Humans, 030212 general & internal medicine, Candida albicans, Etest, ComputingMilieux_MISCELLANEOUS, Candida, Retrospective Studies, biology, Candida glabrata, business.industry, Candida lusitaniae, Aspergillus fumigatus, General Medicine, bacterial infections and mycoses, biology.organism_classification, 3. Good health, Infectious Diseases, Aspergillus, Mycoses, Anidulafungin, France, business, medicine.drug
Abstract

Objectives To determine the Etest-based epidemiological cut-off values (ECVs) for antifungal agents against the most frequent yeast and Aspergillus fumigatus species isolated in 12 French hospitals. Methods For each antifungal agent, the Etest MICs in yeast and A. fumigatus isolates from 12 French laboratories were retrospectively collected from 2004 to 2018. The ECVs were then calculated using the iterative statistical method with a 97.5% cut-off. Results Forty-eight Etest ECVs were determined for amphotericin B, caspofungin, micafungin, anidulafungin, fluconazole, voriconazole, posaconazole and itraconazole, after pooling and analysing the MICs of 9654 Candida albicans, 2939 Candida glabrata SC, 1458 Candida parapsilosis SC, 1148 Candida tropicalis, 575 Candida krusei, 518 Candida kefyr, 241 Candida lusitaniae, 131 Candida guilliermondii and 1526 Aspergillus fumigatus species complex isolates. These ECVs were 100% concordant (identical or within one two-fold dilution) with the previously reported Etest-based ECVs (when available), and they were concordant in 76.1% of cases with the Clinical and Laboratory Standards Institute ECVs and in 81.6% of cases with the European Committee on Antimicrobial Susceptibility Testing ECVs. Conclusions On the basis of these and other previous results, we recommend the determination of method-dependent ECVs. Etest ECVs should not be used instead of breakpoints, but may be useful to identify non-wild-type isolates with potential resistance to antifungal agents, and to indicate that an isolate may not respond as expected to the standard treatment.

Published
2019

32. Toxoplasma gondii Oocyst Infectivity Assessed Using a Sporocyst-Based Cell Culture Assay Combined with Quantitative PCR for Environmental Applications

Author

Dominique Aubert, Sandie Escotte-Binet, Isabelle Villena, Angélique Rousseau, Sophie Kubina, Aurélien Dumètre, Sophie Chagneau, Loïc Favennec, Aurélie Bigot-Clivot, Jitender P. Dubey, Stéphanie La Carbona, Didier Majou, Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), ACTALIA [Villers-Bocage], Vecteurs - Infections tropicales et méditerranéennes (VITROME), Institut de Recherche Biomédicale des Armées (IRBA)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Institut Hospitalier Universitaire Méditerranée Infection (IHU Marseille), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Animal Parasitic Diseases Laboratory [Beltsville, USA], United States Department of Agriculture (USDA)-USDA Agricultural Research Service [Beltsville, Maryland], USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service, ACTIA, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Actalia [Saint-Lô], Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), and ANR-17-CE21-0005,STRIP,Les réponses aux stress chez les parasites protozoaires d'origine alimentaire Toxoplasma gondii et Cryptosporidium spp(2017)

Subjects
Cell Culture Techniques, 010501 environmental sciences, Biology, Real-Time Polymerase Chain Reaction, 01 natural sciences, Applied Microbiology and Biotechnology, Microbiology, 03 medical and health sciences, Mice, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Waterborne Diseases, parasitic diseases, medicine, Ingestion, Animals, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, 0105 earth and related environmental sciences, Infectivity, 0303 health sciences, Ecology, 030306 microbiology, Public and Environmental Health Microbiology, fungi, Oocysts, Toxoplasma gondii, Outbreak, Water, Mussel, DNA, Protozoan, medicine.disease, biology.organism_classification, Toxoplasmosis, 3. Good health, Bivalvia, Disease Models, Animal, Cell culture, Food, Biological Assay, Female, [SDV.IB]Life Sciences [q-bio]/Bioengineering, Cell culture assays, Toxoplasma, Food Science, Biotechnology, Environmental Monitoring
Abstract

Toxoplasma gondii is a ubiquitous foodborne protozoan that can infect humans at low dose and displays different prevalences among countries in the world. Ingestion of food or water contaminated with small amounts of T. gondii oocysts may result in human infection. However, there are no regulations for monitoring oocysts in food, mainly because of a lack of standardized methods to detect them. The objectives of this study were (i) to develop a reliable method, applicable in biomonitoring, for the rapid detection of infectious oocysts by cell culture of their sporocysts combined with quantitative PCR (sporocyst-CC-qPCR) and (ii) to adapt this method to blue and zebra mussels experimentally contaminated by oocysts with the objective to use these organisms as sentinels of aquatic environments. Combining mechanical treatment and bead beating leads to the release of 84% ± 14% of free sporocysts. The sporocyst-CC-qPCR detected fewer than ten infectious oocysts in water within 4 days (1 day of contact and 3 days of cell culture) compared to detection after 4 weeks by mouse bioassay. For both mussel matrices, oocysts were prepurified using a 30% Percoll gradient and treated with sodium hypochlorite before cell culture of their sporocysts. This assay was able to detect as few as ten infective oocysts. This sporocyst-based CC-qPCR appears to be a good alternative to mouse bioassay for monitoring infectious T. gondii oocysts directly in water and also using biological sentinel mussel species. This method offers a new perspective to assess the environmental risk for human health associated with this parasite. IMPORTANCE The ubiquitous protozoan Toxoplasma gondii is the subject of renewed interest due to the spread of oocysts in water and food causing endemic and epidemic outbreaks of toxoplasmosis in humans and animals worldwide. Displaying a sensitivity close to animal models, cell culture represents a real alternative to assess the infectivity of oocysts in water and in biological sentinel mussels. This method opens interesting perspectives for evaluating human exposure to infectious T. gondii oocysts in the environment, where oocyst amounts are considered to be very small.

Published
2019

33. MALDI-TOF mass spectrometry: a new tool for rapid identification of cercariae (Trematoda, Digenea)

Author

Jérôme Depaquit, Isabelle Villena, Hubert Ferté, Antoine Huguenin, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Centre Hospitalier Universitaire de Reims (CHU Reims), Transmission Vectorielle et Épidémiosurveillance de Maladies Parasitaires - EA 4688 (VECPAR), SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)

Subjects
MALDI-TOF, Plagiorchis, food.ingredient, snails, Veterinary (miscellaneous), 030231 tropical medicine, Zoology, Fresh Water, Trematode Infections, Anisus, Digenea, Planorbis, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, 0302 clinical medicine, food, Species Specificity, Stagnicola, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Animals, lcsh:RC109-216, Echinostoma revolutum, Cercaria, Phylogeny, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, 0303 health sciences, High-throughput identification, biology, 030306 microbiology, biology.organism_classification, Furcocercariae, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Haplotypes, Insect Science, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, identification, Animal Science and Zoology, Parasitology, Trematoda, Radix (gastropod), Research Article
Abstract

Identification of cercariae was long based on morphological and morphometric features, but these approaches remain difficult to implement and require skills that have now become rare. Molecular tools have become the reference even though they remain relatively time-consuming and expensive. We propose a new approach for the identification of cercariae using MALDI-TOF mass spectrometry. Snails of different genera (Radix, Lymnaea, Stagnicola, Planorbis, and Anisus) were collected in the field to perform emitting tests in the laboratory. The cercariae they emitted (Trichobilharzia anseri, Diplostomum pseudospathaceum, Alaria alata, Echinostoma revolutum, Petasiger phalacrocoracis, Tylodelphys sp., Australapatemon sp., Cotylurus sp., Posthodiplostomum sp., Parastrigea sp., Echinoparyphium sp. and Plagiorchis sp.) were characterized by sequencing the D2, ITS2 and ITS1 domains of rDNA, and by amplification using specific Alaria alata primers. A sample of each specimen, either fresh or stored in ethanol, was subjected to a simple preparation protocol for MALDI-TOF analysis. The main spectral profiles were analyzed by Hierarchical Clustering Analysis. Likewise, the haplotypes were analyzed using the maximum likelihood method. Analytical performance and the log-score value (LSV) cut-off for species identification were then assessed by blind testing. The clusters obtained by both techniques were congruent, allowing identification at a species level. MALDI-TOF enables identification at an LSV cut-off of 1.7 without false-positives; however, it requires more data on closely related species. The development of a “high throughput” identification system for all types of cercariae would be of considerable interest in epidemiological surveys of trematode infections.

Published
2019

34. Wing Morphometrics of Aedes Mosquitoes from North-Eastern France

Author

Bruno Mathieu, Eva Krupa, Hubert Ferté, Pacôme Sientzoff, Jean-Philippe Martinet, Jérôme Depaquit, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors, Institut Pasteur [Paris] (IP), Centre Hospitalier Universitaire de Reims (CHU Reims), Dynamique des interactions hôte pathogène (DIHP), Université de Strasbourg (UNISTRA), This research was funded by the project N 2020/01/129 funded by the National Agency for Sanitary Safety of Food, Environment and Labor (ANSES)., Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), and Institut Pasteur [Paris]

Subjects
Aedes albopictus, %22">Aedes , 030231 tropical medicine, Zoology, Context (language use), Article, Invasive species, 03 medical and health sciences, 0302 clinical medicine, Canonical variate analysis, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, lcsh:Science, geometric morphometrics, 030304 developmental biology, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, Morphometrics, 0303 health sciences, Wing, biology, fungi, mosquito wings, Outbreak, biology.organism_classification, 3. Good health, Culicidae, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Insect Science, lcsh:Q
Abstract

Simple Summary Mosquitoes act as vectors of arboviruses and their correct identification is very important to understanding the diseases they transmit. To date, this identification is based on several techniques that are either expensive or time consuming. Wing geometric morphometrics allow fast and accurate mosquito identification. By analyzing the pattern of wing venation, it is possible to separate mosquito species. We applied this technique on six Aedes mosquito species from north-eastern France. Our results show a very good differentiation of these species. The use of wing geometric morphometrics could increase the efficiency of field entomologists in case of viral outbreaks. Integrated with existing morphological identification software, it might help relocate mosquito identification from the lab to the field. Abstract Background: In the context of the increasing circulation of arboviruses, a simple, fast and reliable identification method for mosquitoes is needed. Geometric morphometrics have proven useful for mosquito classification and have been used around the world on known vectors such as Aedes albopictus. Morphometrics applied on French indigenous mosquitoes would prove useful in the case of autochthonous outbreaks of arboviral diseases. Methods: We applied geometric morphometric analysis on six indigenous and invasive species of the Aedes genus in order to evaluate its efficiency for mosquito classification. Results: Six species of Aedes mosquitoes (Ae. albopictus, Ae. cantans, Ae. cinereus, Ae. sticticus, Ae. japonicus and Ae. rusticus) were successfully differentiated with Canonical Variate Analysis of the Procrustes dataset of superimposed coordinates of 18 wing landmarks. Conclusions: Geometric morphometrics are effective tools for the rapid, inexpensive and reliable classification of at least six species of the Aedes genus in France.

Published
2021

35. Exposure of yellow-legged gulls to

Author

Lokman Galal, Aurélien Mercier, Yaiza Parra-Torres, Jessica Pearce-Duvet, Jacob González-Solís, Thierry Boulinier, Amandine Gamble, Daniel Oro, Isabelle Villena, Tomás Montalvo, Raül Ramos, Abdessalem Hammouda, Slaheddine Selmi, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), Department of Evolutionary Biology, Ecology and Environmental Sciences [Barcelona, Spain] (Faculty of Biology), University of Barcelona, Neuroépidémiologie Tropicale (NET), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), Servei de Vigilància i Control de Plagues Urbanes [Barcelona, Spain], Agència de salut pública de barcelona, CIBER de Epidemiología y Salud Pública (CIBERESP), UR 17ES44 'Ecologie de la Faune Terrestre' [Gabès, Tunisia] (Faculté des Sciences de Gabès), Université de Gabès, Institut Mediterrani d'Estudis Avançats [Esporles, Spain] (CSIC-UIB), Institut Mediterrani d'estudis Avançats, Mallorca, Spain, Centre for Advanced Studies [Blanes, Spain] (CEAB-CSIC), Centre for Advanced Studies of Blanes (CEAB-CSIC), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), ANR-17-CE35-0004,IntroTox,PHENOMÈNES D'INTROGRESSIONS DANS L'ÉTUDE DE LA DIVERSITÉ GÉNÉTIQUE DU TOXOPLASME ENTRE LA FRANCE ET L'AFRIQUE DE L'OUEST ET CENTRALE : DES INFLUENCES HUMAINES ET ENVIRONEMENTALES(2017), Université Paul-Valéry - Montpellier 3 (UM3)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), Departament de Biologia Animal, Universitat Autònoma de Barcelona [Barcelona] (UAB), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Spain] (CSIC), Université de Reims Champagne-Ardenne (URCA), Servei de Vigilància i Control de Plagues Urbanes, Department of Animal Biology (Institute for Research on Biodiversity (IRBio)), Instituto Mediterráneo de Estudios Avanzados (CSIC-UIB) (IMEDEA), CCSD, Accord Elsevier, Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)

Subjects
0106 biological sciences, Mediterranean climate, Stable isotope analysis, Occupancy, Population, Wildlife, Zoology, Toxoplasma gondii, 010603 evolutionary biology, 01 natural sciences, Sampling strategy, Article, 03 medical and health sciences, parasitic diseases, lcsh:Zoology, medicine, Parasite hosting, 14. Life underwater, lcsh:QL1-991, Mediterranean region, education, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, Immunoassay, 0303 health sciences, education.field_of_study, Eco-epidemiology, biology, medicine.disease, biology.organism_classification, Larus michahellis, Toxoplasmosis, 3. Good health, Infectious Diseases, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDE]Environmental Sciences, embryonic structures, Animal Science and Zoology, Parasitology, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

Este artículo contiene 8 páginas, 4 figuras., Efficiently tracking and anticipating the dynamics of infectious agents in wild populations requires the gathering of large numbers of samples, if possible at several locations and points in time, which can be a challenge for some species. Testing for the presence of specific maternal antibodies in egg yolks sampled on the colonies could represent an efficient way to quantify the exposure of breeding females to infectious agents, particularly when using an abundant and widespread species, such as the yellow-legged gull (Larus michahellis). We used such an approach to explore spatio-temporal patterns of exposure to Toxoplasma gondii, a pathogenic protozoan responsible of toxoplasmosis in humans and other warm-blooded vertebrates. First, we tested the validity of this approach by exploring the repeatability of the detection of specific antibodies at the egg level using two different immunoassays and at the clutch level using an occupancy model. Then, samples gathered in 15 colonies from France, Spain and Tunisia were analysed using an immunoassay detecting antibodies specifically directed against T. gondii. Prevalence of specific antibodies in eggs was overall high while varying significantly among colonies. These results revealed that T. gondii circulated at a large spatial scale in the western Mediterranean yellow-legged gull population, highlighting its potential role in the maintenance community of this parasite. Additionally, this study illustrates how species commensal to human populations like large gulls can be used as wildlife sentinels for the tracking of infectious agents at the human-wildlife interface, notably by sampling eggs., This work is part of the “Goélands leucophée et pathogènes” observation task of OSU OREME and is a follow up of ANR projects EVEMATA (11-BSV7-003). Genotyping of T. gondii strains was funded as part of the ANR project IntroTox (17-CE35- 0004). AG was supported by a PhD fellowship from French Ministry of Research, RR by a postdoctoral contract of the Juan de la Cierva program, from the Spanish Ministry of Economy, Industry and Competitiveness (JCI-2012-11848) and JMCP by a Chateaubriand Fellowship.

Published
2018

36. Evaluation of propidium monoazide-based qPCR to detect viable oocysts of Toxoplasma gondii

Author

Isabelle Villena, Sandie Escotte-Binet, Angélique Rousseau, Aurélien Dumètre, Jitender P. Dubey, Stéphanie La Carbona, Dominique Aubert, Loïc Favennec, Vecteurs - Infections tropicales et méditerranéennes (VITROME), Institut de Recherche Biomédicale des Armées (IRBA)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
Azides, 030231 tropical medicine, Polymerase Chain Reaction, 030308 mycology & parasitology, law.invention, Microbiology, Flow cytometry, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, law, Propidium monoazide, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, parasitic diseases, medicine, Humans, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Coloring Agents, Incubation, Pathogen, Polymerase chain reaction, ComputingMilieux_MISCELLANEOUS, 0303 health sciences, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, Microbial Viability, General Veterinary, biology, medicine.diagnostic_test, Staining and Labeling, Oocysts, Toxoplasma gondii, General Medicine, Amplicon, biology.organism_classification, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Heat inactivation, Infectious Diseases, Insect Science, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Parasitology, Toxoplasma, Propidium
Abstract

Information on the viability of Toxoplasma gondii oocysts is crucial to establish the public health significance of this environmental transmission stage that can contaminate water and foods. Interest for molecular-based methods to assess viability is growing and the aim of our study was to assess, for the first time, a propidium monoazide (PMA)–qPCR approach to determine the viability of T. gondii oocysts. Untreated and heat-killed (99 °C, 5 min) oocysts were incubated with PMA, a photoreactive DNA binding dye, and analyzed by confocal microscopy and flow cytometry to characterize oocysts’ dye permeability. Different PMA concentrations (50 to 150 μM), incubation temperatures (22, 37, and 45 °C), amplicon length, selected targeted gene, and dyes (PMA, PMAxx™) were evaluated to define optimal conditions to discriminate specifically viable oocysts by PMA–qPCR. In theory, PMA binding to DNA would inhibit PCR amplification in dead but not in viable oocysts. Incubation at 22 °C with 100 μM PMA coupled to qPCR targeting a 123-bp sequence of the 529-bp repeat element allowed the distinction between viable and heated oocysts. However, the reduction of viability following heating of oocysts at high temperature was slight and, contrarily to reverse transcriptase-qPCR, the qPCR signal was not totally suppressed in heated suspensions. Therefore, PMA–qPCR is able to assess the impact of heating on T. gondii oocysts’ viability but underestimates the efficacy of this treatment. The relevance of this technique to evaluate the efficacy of other inactivation processes and assess exposure of humans to this pathogen requires further investigations.

Published
2018

37. Human cryptosporidiosis in immunodeficient patients in France (2015–2017)

Author

Damien Costa, Romy Razakandrainibe, Marc Sautour, Stéphane Valot, Louise Basmaciyan, Gilles Gargala, Denis Lemeteil, Loïc Favennec, Frédéric Dalle, Anne Debourgogne, Adela Angoulvant, Patrice Agnamey, Julie bonhomme, Brigitte Degeilh, Cathy Chemla, Cécile Garnaud, Coralie Lollivier, Cécile angebault, Pascal Delaunay, Guillaume Desoubeaux, Emilie Fréalle, Frédéric Grenouillet, Florent Morio, Françoise Botterel, Ghania Belkadi, Hélène Yera, Gilles Nevez, Xavier Iriart, Isabelle Accoceberry, Julie Brunet, Marc Thellier, Meja Rabodonirina, Milene Sasso, Charline Miossec, Murielle Nicolas, Nicole Desbois, Philippe Poirier, Christelle Pomares, Sandrine Houze, Yohann Le govic, Anne Pauline Bellanger, Franck Labbe, Marie Laure Darde, Olivier Duquesnoy, Pierre Flori, Patrick Bastien, Thomas Gueudet, Isabelle Villena, Dominique Aubert, Estelle Cateau, Marie-Elisabeth Bougnoux, Nathalie Kapel, Eric Dannaoui, Alexis Valentin, Anne Totet, Jean Menotti, Denis Blanchet, Magalie Demar, Emmanuel Dutoit, Renaud Piarroux, Emilie Sitterle, Denis Magne, Samsa Hamane, Antoine Berry, Cecile Ramade, CHU Rouen, Normandie Université (NU), Institut Pasteur de Madagascar, Réseau International des Instituts Pasteur (RIIP), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Laboratoire de parasitologie mycologie (CHU de Dijon), Infections Parasitaires : Transmission, Physiopathologie et Thérapeutiques (IP-TPT), Service de Santé des Armées-Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)-Institut de Recherche pour le Développement (IRD), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Appareil Digestif Environnement Nutrition (ADEN ), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Service de Parasitologie-Mycologie [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Stress, Immunité, Pathogènes (SIMPA), Université de Lorraine (UL), Anofel Cryptosporidium National Network, Agents infectieux, résistance et chimiothérapie - UR UPJV 4294 (AGIR ), Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie, Université de Caen Normandie (UNICAEN), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Centre Hospitalier Universitaire de Reims (CHU Reims), Université Grenoble Alpes - UFR Pharmacie (UGA UFRP), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Paris Descartes - Paris 5 (UPD5), Laboratoire de Parasitologie-Mycologie, Centre Hospitalier Universitaire de Nice (CHU Nice)-Hôpital l'Archet, Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Institut Pasteur de Dakar, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre hospitalier universitaire de Nantes (CHU Nantes), École nationale vétérinaire d'Alfort (ENVA), Service de parasitologie-mycologie [CHU Cochin], Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Laboratoire Universitaire de Biodiversité et Ecologie Microbienne (LUBEM), Université de Brest (UBO), CHU Bordeaux [Bordeaux], Microbiologie cellulaire et moléculaire et pathogénicité (MCMP), Université Bordeaux Segalen - Bordeaux 2-Centre National de la Recherche Scientifique (CNRS), Dynamique des interactions Hôte pathogène, Université de Strasbourg (UNISTRA), Immunité et Infection, Université Pierre et Marie Curie - Paris 6 (UPMC)-IFR113-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Parasitologie et Mycologie, Hospices Civils de Lyon (HCL), Biologie, Génétique et Pathologie des Pathogènes Eucaryotes (MIVEGEC-BioGEPPE), Pathogènes, Environnement, Santé Humaine (EPATH), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Laboratoire de Parasitologie-Mycologie-Sérologies Bactériennes et Parasitaires [CHU de la Martinique], Centre Hospitalier Universitaire de la Martinique - CHU Martinique, Parasitologie-Mycologie Fort de France, CHU Fort de France, Laboratoire Microorganismes : Génome et Environnement (LMGE), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Hôpital Bichat - Claude Bernard, Service de parasitologie et mycologie [CHRU de Besançon], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Neuroépidémiologie Tropicale (NET), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Groupe Immunité des Muqueuses et Agents Pathogènes (GIMAP), Université Jean Monnet [Saint-Étienne] (UJM), CHU Clermont-Ferrand, Laboratoire de Parasitologie-Mycologie (LPM), IFR 53, Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-CHU Maison Blanche-UPRES EA 2070, Centre de formation et de recherche sur l'environnement marin (CEFREM), Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Ecologie et biologie des interactions (EBI), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Departments of Medical Parasitology and Mycology, Service de réanimation médicale, Université Paris Diderot - Paris 7 (UPD7)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Laboratoire Hospitalo-Universitaire de Parasitologie-Mycologie, Université des Antilles (UA)-Coordination Régionale de la lutte contre le Virus de L'Immunodéficience Humaine (COREVIH)-Centre Hospitalier Andrée Rosemon [Cayenne, Guyane Française], Université de la Méditerranée - Aix-Marseille 2, Laboratoire de parasitologie mycologie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Groupe hospitalier Albert Chenevier – Henri Mondor, Service de Parasitologie et Mycologie, CHU Toulouse [Toulouse]-Institut Fédératif de Biologie (IFB) - Hôpital Purpan, Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse]-CHU Toulouse [Toulouse]-Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], Région Haute Normandie, Projet COS Sesa, 2015-2018, Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Coordination Régionale de la lutte contre le Virus de L'Immunodéficience Humaine (COREVIH)-Centre Hospitalier Andrée Rosemon [Cayenne, Guyane Française]-Université des Antilles (UA), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Service de Santé des Armées, Université de Rennes (UR), Laboratoire Chrono-environnement (UMR 6249) (LCE), École nationale vétérinaire - Alfort (ENVA), Microbiologie Fondamentale et Pathogénicité (MFP), Université Jean Monnet - Saint-Étienne (UJM), Université de Toulouse (UT), Service de Parasitologie et Mycologie [CHU Toulouse], Institut Fédératif de Biologie (IFB), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Pôle Biologie [CHU Toulouse], and Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)

Subjects
0301 basic medicine, Male, Pediatrics, Epidemiology, Cryptosporidiosis, 0302 clinical medicine, Risk Factors, Child, Immunodeficiency, [SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology, biology, Mortality rate, Cryptosporidium, General Medicine, Middle Aged, 3. Good health, Diarrhea, Infectious Diseases, Cryptosporidium parvum, Child, Preschool, Protozoan, Cyclosporine, Female, Immunotherapy, France, medicine.symptom, Cryptosporidium hominis, Immunosuppressive Agents, Adult, medicine.medical_specialty, Adolescent, 030231 tropical medicine, 030106 microbiology, Immunology, Context (language use), Tacrolimus, 03 medical and health sciences, Immunocompromised Host, Young Adult, medicine, Humans, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Immunocompromised, Aged, Immunosuppression Therapy, Infant, Newborn, Infant, Mycophenolic Acid, medicine.disease, biology.organism_classification, Parasitology
Abstract

International audience; Cryptosporidiosis is a common disease in children and immunodeficient individuals. In 2006, a national network was set up on the surveillance of human cryptosporidiosis in France. Since January 2015, the 41 tertiary care hospitals and the 3 private laboratories of the French National Network on the surveillance of human cryptosporidiosis have been able to declare confirmed cases of cryptosporidiosis online. Between 2015 and 2017, 210 cases of cryptosporidiosis were declared in immunodeficient patients in France; Cryptosporidium parvum and Cryptosporidium hominis represented 66% and 22% of cases, respectively. A peak was observed in autumn. Cryptosporidiosis occurred mainly in a context of solid organ transplantation (SOT) (49%) and of HIV infection (30%). In SOT recipients, cryptosporidiosis appeared more frequently in the first 6 months post transplantation. Regarding cases declared in SOT recipients, mycophenolate mofetil was used in 68%. A mortality rate of 6% was observed. Present results underline the importance of screening for cryptosporidiosis in immunocompromised patients suffering from diarrhea, especially in the course of major cell mediated immunodeficiency or even systematic screening before SOT. Exclusive Cryptosporidium free water feeding could be suggested during major cell mediated immunodeficiency.

Published
2018

38. Octreotide modulates the expression of somatostatin receptor subtypes in inflamed rat jejunum induced by Cryptosporidium parvum

Author

Gilles Gargala, Jean Jacques Ballet, Liqianhai Towledahong, Loïc Favennec, Jie Bai, Xin Liu, Arnaud François, Laetitia Le Goff, Phillipe Ducrotte, Xinjiang Medical University, UNIROUEN - UFR Santé (UNIROUEN UFR Santé), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Institute for Research and Innovation in Biomedicine (IRIB), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Histopathology Laboratory, Rouen University Hospital, Immunité de l'infection et transplantations, Université de Caen Normandie (UNICAEN), Nutrition, inflammation et dysfonctionnement de l'axe intestin-cerveau (ADEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d'Hépato-Gastroentérologie [CHU Rouen], Hôpital Charles Nicolle [Rouen]-CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), CHU Rouen, douville, sabine, Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Hôpital Charles Nicolle [Rouen], and Normandie Université (NU)-Normandie Université (NU)-CHU Rouen

Subjects
0301 basic medicine, Peptide Hormones, Anti-Inflammatory Agents, Octreotide, lcsh:Medicine, Cryptosporidiosis, Pathology and Laboratory Medicine, Biochemistry, Jejunum, Rats, Sprague-Dawley, Medicine and Health Sciences, Somatostatin receptor 2, Somatostatin receptor 1, Receptors, Somatostatin, Intestinal Mucosa, lcsh:Science, Immune Response, ComputingMilieux_MISCELLANEOUS, Protozoans, Multidisciplinary, biology, Somatostatin receptor, Eukaryota, 3. Good health, Animals, Suckling, medicine.anatomical_structure, Somatostatin, Cryptosporidium parvum, Anatomy, medicine.drug, Research Article, medicine.medical_specialty, Immunology, Cryptosporidium, Real-Time Polymerase Chain Reaction, 03 medical and health sciences, Signs and Symptoms, Diagnostic Medicine, Ileum, Internal medicine, Parasite Groups, medicine, Parasitic Diseases, Animals, Inflammation, lcsh:R, Organisms, Cryptosporidium Parvum, Oocysts, Correction, Biology and Life Sciences, [SDV.MHEP.HEG]Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, Jejunal Diseases, biology.organism_classification, [SDV.MHEP.HEG] Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, Parasitic Protozoans, Hormones, Rats, Gastrointestinal Tract, 030104 developmental biology, Endocrinology, Gene Expression Regulation, lcsh:Q, Parasitology, Gastrointestinal function, Digestive System, Apicomplexa
Abstract

Somatostatins are proteins that are involved in gastrointestinal function. However, little is known with regard to somatostatin receptor subtype (SSTR) expression changes that occur in the jejunum during low-grade inflammation and during subsequent octreotide treatment. The aim of the present study was to investigate the expression of SSTRs in the jejunums of Cryptosporidium parvum (C. parvum)-infected rats by immunohistochemisty, reverse transcription (RT) PCR and quantitative real-time RT-PCR assays. Five-day-old suckling Sprague-Dawley rats (n = 15 for each group) were orally gavaged with 105 Nouzilly isolate (NoI) oocysts. Rats then received 50 μg/kg/day of octreotide by intraperitoneal injection from day 10 to day 17 post-infection. Animals were sacrificed on days 7 and 14 post-infection for immunohistochemical analysis and on days 14, 35 and 50 for mRNA expression analysis of SSTR subtypes. Histological analysis of jejunum tissues demonstrated infection of C. parvum along the villus brush border on day 7 post-infection and infection clearance by day 14 post-infection. Real-time PCR analysis indicated that in the inflamed jejunum, a significant increase in SSTR1 and SSTR2 expression was observed on day 14 post-infection. Octreotide therapy down-regulated the expression of SSTR2 on day 37 post-infection but significantly increased expression of SSTR1, SSTR2 and SSTR3 on day 50 post-infection. The results indicate that specific SSTRs may regulate the inflammatory pathway in the rat intestinal inflammation model.

Published
2018

39. Evaluating metabarcoding to analyse diet composition of species foraging in anthropogenic landscapes using Ion Torrent and Illumina sequencing

Author

Marie-Lazarine Poulle, Marie-Amélie Forin-Wiart, Sylvain Piry, Jean-François Cosson, Maxime Galan, Claire Larose, Département Ecologie, Physiologie et Ethologie (DEPE-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), SPF DIANA Pet Food Business, Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Diana Pet Food Business, Region Champagne-Ardenne, Conseil General des Ardennes, Specialites Pet Food (SPF), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)

Subjects
0106 biological sciences, Range (biology), Foraging, Zoology, lcsh:Medicine, Biology, Generalist and specialist species, 010603 evolutionary biology, 01 natural sciences, Article, Predation, 03 medical and health sciences, Feces, Biologie animale, Animals, DNA Barcoding, Taxonomic, lcsh:Science, Illumina dye sequencing, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, 2. Zero hunger, Animal biology, 0303 health sciences, Felis, Diet composition, lcsh:R, Computational Biology, High-Throughput Nucleotide Sequencing, Ion semiconductor sequencing, Feeding Behavior, biology.organism_classification, Animal Feed, Diet, [SDE]Environmental Sciences, Cats, lcsh:Q, Metagenomics
Abstract

Determining the foraging niche of wild species is a challenging task, recently overcome through DNA metabarcoding. This method is successfully used to identify ingested food items of faecal samples. However, several limitations can affect the output of this method. Here, two benchtop high-throughput sequencing (HTS) platforms were evaluated, the Ion PGM (Life Technologies) and the MiSeq (Illumina). We assessed their ability to identify a large taxonomic array of food items for species having a diet possibly containing human-processed products and prey items. We sequenced faecal DNA samples obtained from domestic cats Felis silvestris catus, generalist carnivores presenting numerous specific DNAs in their diet. We assessed platform sensitivity and data reproducibility using both a cat fed on a controlled mixed diet along with a calibration study and free-ranging individuals sampled from a rural area. All the samples were analysed in independent PCR duplicates on each platform. The results of the calibration study showed that the output from MiSeq was more sensitive and reproducible than that from Ion PGM. Detection variability was linked to DNA degradation: 82% of the expected occurrences were detected for intact preys, versus 54% for pet food and 31% for out-of-date raw fish and meat. The Ion PGM detected significantly less human-linked food, birds, field voles, murids and shrews in the field-collected samples than the MiSeq platform. Pooling the replicates from both platforms and filtering HTS data allowed identifying at least one food item in 87.4% of the 326 field-collected samples. A total of 29 prey taxa (90% at species level) and 33 human-related food taxa (76% at genus level) were identified. The findings indicate that using HTS platforms such as MiSeq, which provide reads of sufficiently high quantity and quality, with sufficient numbers of technical replicates, is a robust and non-invasive approach to determine diet composition in animals foraging on a wide range of items in anthropogenic landscapes.

Published
2018
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40. Discovery of New Inhibitors of Toxoplasma gondii via the Pathogen Box

Author

Dominique Aubert, Jean-Hugues Renault, Frédéric Velard, Antoine Huguenin, Ali Bakiri, Jérémy Spalenka, Isabelle Villena, Sandie Escotte-Binet, Simon Duchateau, Jane Hubert, Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Biomatériaux et inflammation en site osseux - EA 4691 (BIOS), and Université de Reims Champagne-Ardenne (URCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-SFR CAP Santé (Champagne-Ardenne Picardie Santé)

Subjects
0301 basic medicine, 030106 microbiology, Population, Toxoplasma gondii, Drug resistance, Biology, Microbiology, Cell Line, 03 medical and health sciences, Inhibitory Concentration 50, Structure-Activity Relationship, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Chlorocebus aethiops, parasitic diseases, medicine, Pathogen Box, Parasite hosting, Animals, Pharmacology (medical), drug screening, education, Pathogen, Vero Cells, antitoxoplasmic compound, Pharmacology, education.field_of_study, Antiparasitic Agents, antitoxoplasmic activity, [SDV.SP]Life Sciences [q-bio]/Pharmaceutical sciences, medicine.disease, biology.organism_classification, Antiparasitic agent, Toxoplasmosis, 3. Good health, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Vero cell, Toxoplasma
Abstract

Toxoplasma gondii is a cosmopolitan protozoan parasite which affects approximately 30% of the population worldwide. The drugs currently used against toxoplasmosis are few in number and show several limitations, such as drug intolerance, poor bioavailability, or drug resistance mechanism developed by the parasite. Thus, it is important to find new compounds able to inhibit parasite invasion or proliferation. In this study, the 400 compounds of the open-access Pathogen Box, provided by the Medicines for Malaria Venture (MMV) foundation, were screened for their anti- Toxoplasma gondii activity. A preliminary in vitro screening performed over 72 h by an enzyme-linked immunosorbent assay (ELISA) revealed 15 interesting compounds that were effective against T. gondii at 1 μM. Their cytotoxicity was estimated on Vero cells, and their 50% inhibitory concentrations (IC 50 ) were further calculated. As a result, eight anti- Toxoplasma gondii compounds with an IC 50 of less than 2 μM and a selectivity index (SI) value of greater than 4 were identified. The most active was MMV675968, showing an IC 50 of 0.02 μM and a selectivity index value equal to 275. Two other compounds, MMV689480 and MMV687807, also showed a good activity against T. gondii , with IC 50 s of 0.10 μM (SI of 86.6) and 0.15 μM (SI of 11.3), respectively. Structure-activity relationships for the eight selected compounds also were discussed on the basis of fingerprinting similarity measurements using the Tanimoto method. The anti- Toxoplasma gondii compounds highlighted here represent potential candidates for the development of new drugs that could be used against toxoplasmosis.

Published
2018

41. Cyberlindnera jadinii (teleomorph Candida utilis) candidaemia in a patient with aplastic anaemia: a case report

Author

Hélène Lanic, Vincent Camus, Stéphane Leprêtre, Gilles Gargala, Emilie Lemasle, Aspasia Stamatoullas, Marion David, Nathalie Contentin, Pascal Lenain, Hervé Tilly, Pauline Treguier, Anne-Lise Menard, Fabrice Jardin, Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d'hématologie, Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), CHU Rouen, Normandie Université (NU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), VILLIER, Venceslas, Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
[SDV.MHEP.HEM] Life Sciences [q-bio]/Human health and pathology/Hematology, Microbiology (medical), Antifungal, medicine.medical_specialty, medicine.drug_class, Case Report, Case presentation, Microbiology, Cyberlindnera, 03 medical and health sciences, 0302 clinical medicine, medullary aplasia, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Internal medicine, Medicine, candidaemia, Cyberlindnera jadinii, Pichia, Torulopsis utilis, biology, Adult patients, business.industry, Septic shock, Blood/heart and Lymphatics, [SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/Hematology, medicine.disease, biology.organism_classification, 3. Good health, Transplantation, 030220 oncology & carcinogenesis, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, business, 030215 immunology
Abstract

International audience; Introduction. We present what is believed to be the first report of candidaemia caused by Cyberlindnera (Pichia) jadinii (teleomorph of Candida utilis) in a patient with an aplastic anaemia.Case presentation. The patient, a 21-year-old male, presented with hepatic cytolysis, cutaneous and pulmonary involvement, and septic shock. Cyberlindnera jadinii was identified by aerobic blood culture and MS. The patient initially received multiple and combined antifungal therapy, but continued to have persistent skin lesions and fever. He was successfully treated by emergency haploidentical haematopoietic stem cell transplantation, combined with triple antifungal therapy and supportive care.Conclusion. Cyberlindnera jadinii, teleomorph of Candida utilis, which is not usually invasive, can lead to an opportunistic invasive infection in unhealthy adult patients. For treatment of the invasive candida infection, it is necessary to combine antifungal therapy and supportive care.

Published
2018

42. Common occurrence of Cryptosporidium hominis in asymptomatic and symptomatic calves in France

Author

Loïc Favennec, Gilles Gargala, Laetitia Le Goff, Denis Lemeteil, Damien Costa, El Hadji Ibrahima Diawara, Romy Razakandrainibe, Jean Jacques Ballet, Institut Pasteur de Madagascar, Réseau International des Instituts Pasteur (RIIP), UNIROUEN - UFR Santé (UNIROUEN UFR Santé), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), CHU Rouen, and Normandie Université (NU)

Subjects
0301 basic medicine, Veterinary medicine, Pulmonology, animal diseases, Prevalence, Cryptosporidiosis, Artificial Gene Amplification and Extension, Pathology and Laboratory Medicine, Polymerase Chain Reaction, Feces, Genotype, Medicine and Health Sciences, Asymptomatic Infections, 2. Zero hunger, Protozoans, biology, Geography, lcsh:Public aspects of medicine, Eukaryota, Cryptosporidium, Agriculture, 030108 mycology & parasitology, 3. Good health, Bacterial Pathogens, Diarrhea, Infectious Diseases, Cryptosporidium parvum, Medical Microbiology, France, medicine.symptom, Pathogens, Cryptosporidium hominis, Research Article, lcsh:Arctic medicine. Tropical medicine, Livestock, lcsh:RC955-962, 030106 microbiology, Cattle Diseases, Research and Analysis Methods, Asymptomatic, Microbiology, 03 medical and health sciences, Parasite Groups, parasitic diseases, medicine, Animals, Humans, Molecular Biology Techniques, Microbial Pathogens, Molecular Biology, [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health, Cardiobacterium Hominis, Public Health, Environmental and Occupational Health, Organisms, Cryptosporidium Parvum, Oocysts, Biology and Life Sciences, lcsh:RA1-1270, biology.organism_classification, Parasitic Protozoans, Regional Geography, Animals, Newborn, Respiratory Infections, Earth Sciences, Parasitology, Cattle, Cardiobacterium hominis, Apicomplexa
Abstract

Background Cryptosporidium spp. infections are the most frequent parasitic cause of diarrhea in humans and cattle. However, asymptomatic cases are less often documented than symptomatic cases or cases with experimentally infected animals. Cryptosporidium (C.) hominis infection accounts for the majority of pediatric cases in several countries, while C. parvum is a major cause of diarrhea in neonatal calves. In cattle Cryptosporidium spp. infection can be caused by C. parvum, C. bovis, C.andersoni and C. ryanae, and recently, reports of cattle cases of C. hominis cryptosporidiosis cases suggest that the presence of C. hominis in calves was previously underestimated. Methodology/Principal findings From February to November 2015, Cryptosporidium spp. infected calves were detected in 29/44 randomly included farms from 5 geographic regions of France. C. hominis and C. parvum were found in 12/44 and 26/44 farms, respectively with higher C. hominis prevalence in the western region. In 9 farms, both C. parvum and C. hominis were detected. Eighty-six of 412 (73/342 asymptomatic and 13/70 symptomatic) one to nine-week-old calves shed C. hominis or C. parvum oocysts (15 and 71 calves, respectively), with no mixed infection detected. The predominant C. hominis IbA9G3 genotype was present in all regions, and more frequent in the western region. An incompletely characterized Ib, and the IbA13G3, IbA9G2 and IbA14G2 genotypes were present only in the western region. For C. parvum, the most frequent genotype was IIaA16G3R1 with no geographic clustering. Most C. hominis infected calves were asymptomatic, with some exceptions of IbA9G2 and IbA9G3 isolates, while C. parvum IIaA16G3R1 was associated with symptoms. Conclusions/Significance Present results indicate for the first time that in several geographic regions of France, C. hominis was present in about one fifth of both asymptomatic and symptomatic infected calves, with isolated genotypes likely associated with human infection. Further investigations are aimed at documenting direct or indirect transmissions between livestock and humans., Author summary Symptomatic infection by the Apicomplexan Cryptosporidium spp. is presently considered the most frequent parasitic cause of acute diarrhea in both humans (especially severe in immunocompromised individuals and infants in both developed and developing countries) and cattle (calves), while asymptomatic infections are less often documented. Cryptosporidium (C.) hominis once considered to be restricted to humans accounts for the majority of pediatric cases in several countries. C. parvum can also infect cattle as well as C. bovis, C. andersoni, and C. ryanae. Recently, cattle C. hominis cryptosporidiosis has been reported, suggesting that the presence of C. hominis in calves was previously underestimated. The aim of this work was to characterize Cryptosporidium spp. infection in both asymptomatic and symptomatic dairy and beef calves from Metropolitan France. From February to November 2015, C. parvum or C. hominis infected calves were detected in farms from 5 geographic regions of France. Surprisingly, C. hominis was present in about one fifth of Cryptosporidium spp. infected calves, and exhibited genotypes which were previously reported in human and nonhuman primate. Further investigations are aimed at documenting direct or indirect C. hominis transmissions between and among livestock and humans.

Published
2018

43. Assessing viability and infectivity of foodborne and waterborne stages (cysts/oocysts) of Giardia duodenalis, Cryptosporidium spp., and Toxoplasma gondii: A review of methods

Author

Sandie Escotte-Binet, Stéphanie La Carbona, Isabelle Villena, Dominique Aubert, Loïc Favennec, Angélique Rousseau, Aurélien Dumètre, Gilles Gargala, Cédric Gérard, Lucy J. Robertson, Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), ACTALIA [Villers-Bocage], Actalia [Saint-Lô], Infections Parasitaires : Transmission, Physiopathologie et Thérapeutiques (IP-TPT), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Service de Santé des Armées, Vecteurs - Infections tropicales et méditerranéennes (VITROME), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA), Norwegian University of Life Sciences (NMBU), CHU Rouen, Normandie Université (NU), Nestlé Research Center | Centre de recherche Nestlé [Lausanne], Nestlé S.A., ANR-17-CE21-0005,STRIP,Les réponses aux stress chez les parasites protozoaires d'origine alimentaire Toxoplasma gondii et Cryptosporidium spp(2017), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), Institut de Recherche Biomédicale des Armées (IRBA)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Nestle Research Center, and Nestlé Research Center

Subjects
Giardiasis, 0301 basic medicine, Veterinary medicine, Veterinary (miscellaneous), 030106 microbiology, Cryptosporidiosis, Trichinella, Cryptosporidium, Review Article, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, Food chain, Food Parasitology, parasitic diseases, Methods, Animals, Humans, lcsh:RC109-216, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Cells, Cultured, Risk assessment, 2. Zero hunger, Infectivity, biology, business.industry, Giardia, Oocysts, Water, Toxoplasma gondii, Food safety, biology.organism_classification, 3. Good health, Infectious Diseases, Genetic Techniques, Viability, Food, Insect Science, Protozoa, Biological Assay, Animal Science and Zoology, Parasitology, Giardia lamblia, business, Toxoplasma, Toxoplasmosis
Abstract

Giardia duodenalis, Cryptosporidium spp. and Toxoplasma gondii are protozoan parasites that have been highlighted as emerging foodborne pathogens by the Food and Agriculture Organization of the United Nations and the World Health Organization. According to the European Food Safety Authority, 4786 foodborne and waterborne outbreaks were reported in Europe in 2016, of which 0.4% were attributed to parasites including Cryptosporidium, Giardia and Trichinella. Until 2016, no standardized methods were available to detect Giardia, Cryptosporidium and Toxoplasma (oo)cysts in food. Therefore, no regulation exists regarding these biohazards. Nevertheless, considering their low infective dose, ingestion of foodstuffs contaminated by low quantities of these three parasites can lead to human infection. To evaluate the risk of protozoan parasites in food, efforts must be made towards exposure assessment to estimate the contamination along the food chain, from raw products to consumers. This requires determining: (i) the occurrence of infective protozoan (oo)cysts in foods, and (ii) the efficacy of control measures to eliminate this contamination. In order to conduct such assessments, methods for identification of viable (i.e. live) and infective parasites are required. This review describes the methods currently available to evaluate infectivity and viability of G. duodenalis cysts, Cryptosporidium spp. and T. gondii oocysts, and their potential for application in exposure assessment to determine the presence of the infective protozoa and/or to characterize the efficacy of control measures. Advantages and limits of each method are highlighted and an analytical strategy is proposed to assess exposure to these protozoa.Estimation de la viabilité et infectiosité des stades (kystes et oocystes) de Giardia duodenalis, Cryptosporidium spp. et Toxoplasma gondii transmis par la nourriture et l’eau : une revue des méthodes.Giardia duodenalis, Cryptosporidium spp. et Toxoplasma gondii sont des parasites protozoaires qui ont été soulignés comme agents pathogènes émergents dans les aliments par l’Organisation des Nations Unies pour l’alimentation et l’agriculture et l’Organisation Mondiale de la Santé. Selon l’Autorité Européenne de Sécurité des Aliments, 4786 épidémies d’origine alimentaire et hydrique ont été enregistrées en Europe en 2016, dont 0.4% ont été attribuées à des parasites, incluant Cryptosporidium, Giardia et Trichinella. Jusqu’en 2016, aucune méthode standardisée n’était disponible pour détecter les kystes de Giardia et les oocystes de Cryptosporidium et Toxoplasma dans les aliments. Aucune réglementation n’est donc proposée concernant ces dangers. Cependant, compte tenu de leur faible dose infectieuse, l’ingestion d’une quantité d’aliments faiblement contaminés peut entraîner une infection de l’homme. Pour évaluer le risque lié aux protozoaires dans les aliments, des efforts doivent être faits dans l’évaluation de l’exposition pour estimer la contamination le long de la chaîne alimentaire, depuis la matière première jusqu’aux consommateurs. Cette évaluation nécessite de déterminer : (i) la prévalence de parasites infectieux dans les aliments, (ii) l’efficacité des mesures de maîtrise pour éliminer cette contamination. Pour mener une telle évaluation, des méthodes capables d’identifier des parasites viables (vivants) et infectieux sont requises. Cette revue décrit les méthodes actuellement disponibles permettant d’évaluer l’infectiosité et la viabilité des kystes de G. duodenalis et des oocystes de Cryptosporidium spp. et T. gondii, et leur potentiel pour être appliquées dans l’évaluation de l’exposition pour déterminer la présence de parasites infectieux et/ou caractériser l’efficacité des mesures de maîtrise. Les avantages et limites de chaque méthode sont présentés et une stratégie d’analyses est proposée pour évaluer l’exposition à ces protozoaires.

Published
2018

44. The influence of early‐life allocation to antlers on male performance during adulthood: Evidence from contrasted populations of a large herbivore

Author

Jean-François Lemaître, Cécile Vanpé, Louise Cheynel, Benjamin Rey, Sylvia Pardonnet, A. J. Mark Hewison, Gilles Bourgoin, Hubert Ferté, Frédéric Douhard, Emmanuelle Gilot-Fromont, Maryline Pellerin, François Débias, Jean-Michel Gaillard, Biodémographie évolutive, Département écologie évolutive [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Ecologie et évolution des populations, Génétique Physiologie et Systèmes d'Elevage (GenPhySE ), École nationale supérieure agronomique de Toulouse [ENSAT]-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Transmission Vectorielle et Épidémiosurveillance de Maladies Parasitaires - EA 4688 (VECPAR), SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Office National de la Chasse et de la Faune Sauvage (ONCFS), Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Unité de recherche Comportement et Ecologie de la Faune Sauvage (CEFS), Institut National de la Recherche Agronomique (INRA), ANR-11-LABX-0048,ECOFECT,Dynamiques eco-évolutives des maladies infectieuses(2011), ANR-11-IDEX-0007,Avenir L.S.E.,PROJET AVENIR LYON SAINT-ETIENNE(2011), ANR-15-CE32-0002,AGEX,Vieillissement sexe-spécifique en milieu naturel(2015), Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), Département Ecologie, Physiologie et Ethologie (DEPE-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Observatoire du Mont-Blanc, Centre d'études biologiques de Chizé (CEBC), Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-École nationale supérieure agronomique de Toulouse (ENSAT), Université de Toulouse (UT)-Université de Toulouse (UT), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), and Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, 0106 biological sciences, 0301 basic medicine, life history, animal structures, senescence, media_common.quotation_subject, Longevity, Population, Antlers, capreolus capreolus, 010603 evolutionary biology, 01 natural sciences, Competition (biology), 03 medical and health sciences, Capreolus, biology.animal, [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology, Animals, roe deer, Mating, education, Ecology, Evolution, Behavior and Systematics, ComputingMilieux_MISCELLANEOUS, media_common, education.field_of_study, Herbivore, biology, Deer, [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], biology.organism_classification, Antler, Roe deer, secondary sexual traits, Phenotype, 030104 developmental biology, ageing, Sexual selection, Animal Science and Zoology, France, Energy Metabolism, Switzerland, Demography
Abstract

International audience; To secure mating opportunities, males often develop and maintain conspicuous traits that are involved in intrasexual and/or intersexual competition. While current models of sexual selection rely on the assumption that producing such traits is costly, quantifying the cost of allocating to secondary sexual traits remains challenging. According to the principle of allocation, high energy allocation to growth or sexual traits in males should lead to reduced energy allocation to the maintenance of cellular and physiological functions, potentially causing them to age faster, with impaired survival. We evaluated the short-term and delayed consequences of energy allocation to antlers early in life in two contrasted populations of roe deer, Capreolus capreolus. Although most males mate successfully for the first time in their fourth year, antlers are grown annually from the first year of life onwards. We tested the prediction that a high level of allocation to antler growth during the first two years of life should lead to lower body mass, antler size and survival during the early and late prime stages, as well as to reduced longevity overall. Growing and carrying long antlers during the first years of life was not associated with any detectable cost in the late prime stage. The positive association between antler growth in early life and adult body mass instead supports that fawn antler acts as an honest signal of phenotypic quality in roe deer. For a given body mass, yearling males growing longer antlers displayed impaired performance during their late prime. We also found a trend for a short-term survival cost of allocation to relative antler length during the second year of life. Yearling males that grow long antlers relative to their mass might display a fast life-history tactic. We argue that differential allocation to secondary sexual traits generates a diversity of individual trajectories that should impact population dynamics.

Published
2018

45. Planktonic free-living amoebae susceptibility to dental unit waterlines disinfectants

Author

Damien Costa, Benjamin Fradin, Valentin Bossard, Christine Imbert, Kévin Brunet, Microbiologie de l'Eau (MDE), Ecologie et biologie des interactions (EBI), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
0301 basic medicine, Microbiology (medical), Vermamoeba vermiformis, [SDV]Life Sciences [q-bio], Disinfectant, 030106 microbiology, medicine.disease_cause, Dental Equipment, Microbiology, 03 medical and health sciences, medicine, Humans, Immunology and Allergy, Candida albicans, ComputingMilieux_MISCELLANEOUS, Amoebida, General Immunology and Microbiology, biology, Pseudomonas aeruginosa, Water, Dental Disinfectants, General Medicine, biology.organism_classification, Antimicrobial, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, 030104 developmental biology, Infectious Diseases, Acanthamoeba castellanii, Disinfectants
Abstract

A high diversity of microorganisms is encountered inside dental unit waterlines (DUWL). Among those the presence of free-living amoebae (FLA) appears currently underestimated, although human infections may occur due to contact with FLA-contaminated water during dental cares. In order to limit microbial DUWL contamination, disinfectants are provided by dental unit manufacturer, however, with limited documentation on their activities against FLA. The aim of this study was to evaluate the efficiency of three commercial DUWL disinfectants: the Calbenium© (Airel, Champigny-sur-Marne, France), the Oxygenal 6© (Kavo, Biberach, Germany) and the Sterispray© (Gammasonic, Billom, France), against two FLA species, i.e. Acanthamoeba castellanii and Vermamoeba vermiformis alone or co-cultured with Pseudomonas aeruginosa and Candida albicans at concentrations ranging from 0% to 5% (v/v). Results showed varied efficacies of disinfectants: the Oxygenal 6© did not exhibit FLA killing activity, while the Sterispray© and the Calbenium© displayed concentration- and species-dependent activities with a maximum eradication rates of 100% and 86%, and 79% and 97% for A. castellani and V. vermiformis, respectively. None of the disinfectants were able to totally eradicate FLA at concentrations recommended by manufacturers. Present results highlight unsatisfactory anti-FLA activities of 3 DUWL disinfectant preparations advocating deeper investigation of antimicrobial spectra of commercial disinfectants in use for DUWL maintenance.

Published
2017

46. Ruling out nosocomial transmission of Cryptosporidium in a renal transplantation unit: case report

Author

C. Borni-Duval, Alexander W. Pfaff, Frédéric Dalle, Julie Brunet, Ahmed Abou-Bacar, Romy Razakandrainibe, S. Valot, Ermanno Candolfi, B. Moulin, C. Muller, S. Caillard, Jean-Philippe Lemoine, Loïc Favennec, Bernard Pesson, Marc Sautour, Laboratoire des sciences et matériaux pour l'électronique et d'automatique (LASMEA), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Images, Signaux et Systèmes Intelligents (LISSI), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Laboratoire de parasitologie mycologie (CHU de Dijon), Service des Recherches Métallurgiques Appliquées (SRMA), Département des Matériaux pour le Nucléaire (DMN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, inconnu, Inconnu, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Laboratoire Adaptation et pathogénie des micro-organismes [Grenoble] (LAPM), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB), and Centre Hospitalier Universitaire [Grenoble] (CHU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
0301 basic medicine, Nephrology, Adult, Diarrhea, Male, medicine.medical_specialty, [SDV]Life Sciences [q-bio], 030106 microbiology, Cryptosporidiosis, Cryptosporidium, Context (language use), Case Report, 03 medical and health sciences, Feces, Immunocompromised Host, Internal medicine, medicine, Animals, Humans, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, Genotyping, Cross Infection, biology, Transmission (medicine), Nitazoxanide, Acute Kidney Injury, Middle Aged, biology.organism_classification, Nitro Compounds, Kidney Transplantation, 3. Good health, Transplantation, Thiazoles, 030104 developmental biology, Infectious Diseases, Renal transplant, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Immunology, Coccidiostats, Female, medicine.symptom, Zoonotic species, medicine.drug, Genotypic species identification
Abstract

Background Cryptosporidium spp. is a ubiquitous parasite affecting humans as well as domestic and wild vertebrates, causing diarrhea in both immunocompetent and immunocompromised hosts worldwide. Its transmission occurs primarily by the fecal-oral route. In humans, C. parvum and C. hominis are the most prevalent species, whereas immunocompetent and immunocompromised individuals can also be infected by other zoonotic species. Renal transplant patients are prone to develop cryptosporidiosis, which can induce severe and life-threatening diarrhea. Case presentation We report here a series of nearly concomitant cases of acute symptomatic cryptosporidiosis in three renal transplant patients attending the Strasbourg University Hospital Nephrology Unit. The clinical presentation was persistent diarrhea and acute renal failure. The diagnosis was confirmed by microscopic stool examination using a modified Ziehl-Neelsen staining method and species identification by molecular tools. All patients were treated with nitazoxanide and recovered from diarrhea after 14 days of therapy. Conclusion Genotypic species identification was not consistent with an epidemic context, thus underlining the need for genotyping to monitor at risk patients.

Published
2016

47. A rapid and sensitive method to detect Toxoplasma gondii oocysts in soil samples

Author

Dominique Aubert, Abdou Malik da Silva, Benjamin Cancès, Sandie Escotte-Binet, Isabelle Villena, Marie-Lazarine Poulle, Jitender P. Dubey, Stéphanie La Carbona, Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Groupe d'Étude sur les Géomatériaux et Environnements Naturels, Anthropiques et Archéologiques - EA 3795 (GEGENAA), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Maison des Sciences Humaines de Champagne-Ardenne (MSH-URCA), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Animal Parasitic Diseases Laboratory [Beltsville, USA], United States Department of Agriculture (USDA)-USDA Agricultural Research Service [Beltsville, Maryland], USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service, and Université de Reims Champagne-Ardenne (URCA)

Subjects
0301 basic medicine, Time Factors, Lysis, Soil test, 030231 tropical medicine, Toxoplasma gondii, Biology, Dispersion (geology), Soil, 03 medical and health sciences, 0302 clinical medicine, Soil contamination, Limit of Detection, Dispersion solution, parasitic diseases, [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology, ComputingMilieux_MISCELLANEOUS, [SDV.EE.SANT]Life Sciences [q-bio]/Ecology, environment/Health, Detection limit, Chromatography, qPCR detection, General Veterinary, Extraction (chemistry), Oocysts, General Medicine, 030108 mycology & parasitology, Density gradients, biology.organism_classification, 6. Clean water, 3. Good health, Sucrose flotation, Parasitology, Toxoplasma, Percoll
Abstract

Documenting the extent of soil contamination by Toxoplasma gondii oocysts is a key issue to prevent the worldwide infection caused by this protozoan. Our aim was to improve the practicability and sensitivity of a low-cost method to detect T. gondii DNA in soil samples developed a few years ago. Various parameters of the reference protocol were modified to determine their effect on the detection of T. gondii DNA in soil samples (“natural soil” and “sand”) spiked with oocysts. We tested i) filtration using stomacher bags, ii) Tween 80, Tween 20, SDS and Triton X100 as dispersion solutions, iii) sucrose solution, zinc chloride solution, Optiprep and Percoll as density gradients, iv) freeze/thaw versus mechanical grinding as lysis methods, and v) Qiagen versus Fastprep as extraction kits The optimized protocol is quicker and easier to use than the previous one, and includes the following items: 0.1% Tween80/PBS for dispersion, sucrose solution for flotation, mechanical grinding, and FastDNA spin kit for extraction. It accurately detects T. gondii DNA in both fresh and frozen soil samples and displays a detection limit below 1 oocyst/g of fresh soil.

Published
2019

48. Toxoplasma gondiiin beef consumed in France: regional variation in seroprevalence and parasite isolation

Author

Isabelle Villena, Catherine Perret, Radu Blaga, Pascal Boireau, Naïma Ortis, Régine Geers, Anne Thébault, Vitomir Djokic, Benoit Durand, Dominique Aubert, Lénaïg Halos, Annie Alliot, Myriam Thomas, Aurélien Mercier, Biologie moléculaire et immunologie parasitaires et fongiques (BIPAR), École nationale vétérinaire d'Alfort (ENVA)-Institut National de la Recherche Agronomique (INRA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Laboratoire de Parasitologie-Mycologie (LPM), IFR 53, Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-CHU Maison Blanche-UPRES EA 2070, Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Neuroépidémiologie Tropicale (NET), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de Parasitologie Mycologie [CHU Limoges], and CHU Limoges

Subjects
Age effect, Veterinary medicine, strain isolation, prevalences, 030308 mycology & parasitology, Mice, meat, 0302 clinical medicine, Food Parasitology, Risk Factors, Seroepidemiologic Studies, Prevalences, Genotype, Parasite hosting, 0303 health sciences, toxoplasma gondii, Age Factors, 3. Good health, Infectious Diseases, Regional variation, Female, France, Toxoplasma, Research Article, Meat, Isolation (health care), Veterinary (miscellaneous), 030231 tropical medicine, Toxoplasma gondii, Cattle Diseases, Biology, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, Bovines, parasitic diseases, Animals, Humans, Seroprevalence, lcsh:RC109-216, Risk factor, Strain isolation, biology.organism_classification, Red Meat, Cross-Sectional Studies, Toxoplasmosis, Animal, Insect Science, Cattle, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Animal Science and Zoology, Parasitology, bovines
Abstract

In France, the consumption of cattle and sheep meat appears to be a risk factor for infection of pregnant women with Toxoplasma gondii. Several nation-wide surveys in France have investigated the prevalence of T. gondii in sheep and pig meat, but little is known at present about the prevalence of the parasite in beef. The main objective of the present cross-sectional survey was to estimate the seroprevalence of T. gondii infection in beef consumed in France. A secondary objective was to attempt to isolate T. gondii from cattle tissues and to study the geographical and age variations of this seroprevalence. The overall estimate of seroprevalence of T. gondii in bovine carcasses (n = 2912), for a threshold of 1:6 was 17.38%. A strong age effect was observed (p 0.0001) with a seroprevalence of 5.34% for calves (8 months) and 23.12% for adults (8 months). Seroprevalence estimates given by area of birth and area of slaughtering for adults showed that the areas with the highest seroprevalence were not the same between these two variables. Only two strains, corresponding to genotype II, were isolated from heart samples, indicating that there is a limited risk of human infection with T. gondii, which needs to be correlated with the food habit of consuming raw or undercook (bleu or saignant) beef. However, new questions have emerged, especially concerning the isolation of parasites from beef and the precise role of bovines, generally described as poor hosts for T. gondii, in human infection.Toxoplasma gondii dans la viande bovine consommée en France : variation régionale de la séroprévalence et isolement de parasites.En France, la consommation de viande bovine et ovine apparaît comme un facteur de risque pour la contamination des femmes enceintes par Toxoplasma gondii. Plusieurs enquêtes nationales ont été réalisées afin de déterminer le niveau de contamination par T. gondii de la viande ovine et porcine, en France, mais très peu est encore connu quant à la prévalence du parasite dans la viande bovine. La présente enquête transversale avait pour objectif principal d’estimer la séroprévalence de l’infection à T. gondii dans la viande bovine consommée en France, ainsi que d’isoler T. gondii à partir de tissus de bovins et d’étudier, à titre d’objectif secondaire, les variations géographiques et d’âge de cette prévalence. L’estimation globale de la séroprévalence de T. gondii dans les carcasses de bovins (n = 2912) était de 17,38 % (pour un seuil de dilution à 1:6). Un effet significatif de l’âge a été observé (p 0,0001) avec une séroprévalence de 5,34 % pour les veaux (8 mois) et de 23,12 % pour les adultes (8 mois). Les estimations de séroprévalence données par zone de naissance et par zone d’abattage pour les adultes montrent que les zones de séroprévalence les plus élevées n’étaient pas les mêmes pour ces deux variables. Seulement deux souches, de génotype II, ont été isolées à partir d’échantillons de cœurs, soulignant que le risque d’infection humaine est limité, mais doit être corrélé avec les habitudes de consommation alimentaire de la viande bovine peu/pas cuite (bleu ou saignante). Cependant, de nouvelles questions se posent, notamment en ce qui concerne l’isolement du parasite à partir de la viande bovine, ainsi que le rôle précis des bovins, généralement décrits comme des hôtes médiocres pour T. gondii, dans la contamination humaine.

Published
2019

49. Bioaccumulation of Toxoplasma and Cryptosporidium by the freshwater crustacean Gammarus fossarum: Involvement in biomonitoring surveys and trophic transfer

Author

Olivier Geffard, Isabelle Bonnard, Alexandra Lepoutre, Fanny Bastien, Adeline François, Isabelle Villena, Mélissa Palos Ladeiro, Alain Geffard, Jitender P. Dubey, Dominique Aubert, Aurélie Bigot-Clivot, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Animal Parasitic Diseases Laboratory [Beltsville, USA], United States Department of Agriculture (USDA)-USDA Agricultural Research Service [Beltsville, Maryland], USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service, Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Animal Parasitic Diseases Laboratory, United States Department of Agriculture - USDA (USA)-USDA Agricultural Research Service [Beltsville, Maryland], USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service-Agricultural Research Service, Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), and Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)

Subjects
0301 basic medicine, animal diseases, Health, Toxicology and Mutagenesis, Zoology, Cryptosporidium, Fresh Water, 010501 environmental sciences, Real-Time Polymerase Chain Reaction, 01 natural sciences, 03 medical and health sciences, Rivers, Surveys and Questionnaires, parasitic diseases, Biomonitoring, Animals, Amphipoda, Seawater, 14. Life underwater, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Trophic level, Shellfish, biology, Ecology, fungi, Public Health, Environmental and Occupational Health, Oocysts, Toxoplasma gondii, General Medicine, biology.organism_classification, Pollution, 6. Clean water, 030104 developmental biology, Cryptosporidium parvum, Bioaccumulation, [SDE]Environmental Sciences, Protozoa, Bioindicator, Toxoplasma, Environmental Monitoring
Abstract

The protozoa Toxoplasma gondii and Cryptosporidium parvum are public health priorities because their oocysts can persist in recreational, surface, drinking, river, and sea water sources for a long time. To evaluate the capacity of the freshwater crustacean Gammarus fossarum to accumulate T. gondii and C. parvum oocysts, gammarids were exposed to 200, 2000 or 20,000 oocysts per gammarid and per day for 21 days followed by 5 days of depuration. C. parvum DNA was detected by qPCR in G. fossarum in only one out of four pools for the highest concentration and after 14 days of exposure, and T. gondii DNA was detected after 7 days of exposure to the two highest concentrations. Our results document the capacity of G. fossarum to accumulate T. gondii in its tissues proportionally to the ambient concentration; the maximum number of oocysts was detected in gammarid tissues after exposure to 20,000 oocysts per day. Mean values of 3.26 (±3), 21.71 (±15.18), and 17.41 (±10.89) oocysts were detected in gammarids after 7, 14, and 21 days, respectively, and after 5 days of depuration, T. gondii oocysts were still present in gammarid tissues. These results show for the first time that a freshwater crustacean can bioaccumulate T. gondii oocysts, suggesting that G. fossarum is a potential effective bioindicator of protozoan contamination in biomonitoring studies. Moreover, due to its key position in freshwater food webs, G. fossarum could also play a role in the trophic transfer of protozoa.

Published
2016

50. Simultaneous detection of the protozoan parasites Toxoplasma, Cryptosporidium and Giardia in food matrices and their persistence on basil leaves

Author

Christine Terryn, Jitender P. Dubey, Stéphanie La Carbona, Jeanne Hohweyer, Nadine Azas, Dominique Aubert, Aurélien Dumètre, Catherine Cazeaux, Favennec Loïc, Isabelle Villena, Maryline Houssin, Emmanuelle Travaillé, Emilie Languet, Protozooses Transmises par l'Alimentation (Cryptosporidiose, Giardose et Toxoplasmose) : Mode de Contamination et Pathogénie (PROTAL) - EA 3800 (PROTAL), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Actalia [Saint-Lô], LABÉO, Pôle d’analyses et de recherche de Normandie (LABÉO), Infections Parasitaires : Transmission, Physiopathologie et Thérapeutiques (IP-TPT), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Service de Santé des Armées, Plateforme en Imagerie Cellulaire et Tissulaire (PICT), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Animal Parasitic Diseases Laboratory [Beltsville, USA], United States Department of Agriculture (USDA)-USDA Agricultural Research Service [Beltsville, Maryland], USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)

Subjects
0301 basic medicine, [SDV]Life Sciences [q-bio], 030106 microbiology, Cryptosporidium, Food Contamination, Immunomagnetic separation, Microbiology, Persistence (computer science), 03 medical and health sciences, parasitic diseases, biology, business.industry, Giardia, Oocysts, Toxoplasma gondii, biology.organism_classification, Food safety, Plant Leaves, Ocimum basilicum, Protozoa, Rubus, business, Toxoplasma, Food Science, Food contaminant
Abstract

International audience; Toxoplasma gondii, Cryptosporidium spp. and Giardia intestinalis are emerging pathogen parasites in the food domain. However, without standardized methods for their detection in food matrices, parasitic foodborne outbreaks remain neglected. In this study, a new immunomagnetic separation assay (IMS Toxo) targeting the oocyst's wall of T. gondii was developed using a specific purified monoclonal antibody. Performance of this IMS Toxo coupled to microscopic and qPCR analyses was evaluated in terms of limit of detection (LOD) and recovery rate (RR) on: i) simple matrix (LOD ¼ 5 oocysts; RR between 5 and 56%); ii) raspberries and basil (LOD ¼ 33 oocysts/g; RR between 0.2 and 35%). Finally, to simultaneously extract the three protozoa from these food matrices, T. gondii oocysts were directly concentrated (without IMS Toxo) from the supernatant of the IMS of Cryptosporidium and Giardia (oo)cysts. This strategy associated to qPCR detection led to LOD

Published
2016

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