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1. Les anophèles et la transmission du paludisme à Ambohimena, village de la marge occidentale des Hautes-Terres Malgaches

Author

Rajaonarivelo V., Le Goff G., Cot M., and Brutus L.

Subjects
paludisme, Anopheles funestus, Anopheles arabiensis, transmission, Madagascar, Infectious and parasitic diseases, RC109-216
Abstract

Une étude a été menée dans le Moyen-Ouest de Madagascar à 940 mètres d'altitude dans le village d'Ambohimena. Ce village est situé en dehors de la zone d'aspersions intra-domiciliaires d'insecticides rémanents. Deux vecteurs, An. funestus Giles, 1900 et An. arabiensis Patton, 1905 y sont présents. An. funestus est abondant au cours de la saison chaude et humide, avec deux pics d'abondance en décembre et avril. L'endophagie d' An. funestus est faible (taux d'endophagie = 35,3 %) . C'est une espèce endophile (Taux d'endophilie = 78 %) et anthropophile (taux d'anthropophilie = 64 %). Son infectivité est faible (taux d'infectivité = 0,20 %). Le taux d'inoculation spécifique de Plasmodium falciparum par l'espèce An. funestus a été de moins de 10 piqûres par homme et par an. Cette espèce présente une capacité vectrice maximale à la fin du premier tour de riz (janvier) alors que son abondance maximale est observée à la fin du deuxième tour (avril-mai) An. arabiensis est abondant entre décembre et janvier et est lié à la présence des gîtes pluviaux favorables au développement larvaire. C'est une espèce exophage (taux d'endophagie = 27,5 %) et zoophile (taux d'anthropophilie = 7,8 %). An. arabiensis jouerait un rôle secondaire dans la transmission du paludisme car la présence des plasmodies n'a pas été mise en évidence (effectif testé = 871). Dans ce village, la stabilité du paludisme est modérée ou intermédiaire ; plus proche de l'instabilité que de la stabilité avérée. Il est suggéré que la lutte antivectorielle soit étendue aux zones de transition stabilité-instabilité qui constitueraient un réservoir de vecteurs et de plasmodies, afin de prévenir l'émergence de nouvelles épidémies sur les Hautes-Terres.

Published
2004
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7. Énoncés

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, Le Loup, G., additional, and Odermatt-Biays, S., additional

Published
2019
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9. Pharmacie du voyageur

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, Le Loup, G., additional, and Odermatt-Biays, S., additional

Published
2019
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12. Vaccinations

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, Le Loup, G., additional, and Odermatt-Biays, S., additional

Published
2019
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14. Prévention du paludisme

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, Le Loup, G., additional, and Odermatt-Biays, S., additional

Published
2019
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15. Corrigés

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, Le Loup, G., additional, and Odermatt-Biays, S., additional

Published
2019
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16. Fiches maladies

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, Le Loup, G., additional, and Odermatt-Biays, S., additional

Published
2019
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18. Haematological consequences of acute uncomplicated falciparum malaria: a WorldWide Antimalarial Resistance Network pooled analysis of individual patient data

Author

Mansoor, R, Commons, RJ, Douglas, NM, Abuaku, B, Achan, J, Adam, I, Adjei, GO, Adjuik, M, Alemayehu, BH, Allan, R, Allen, EN, Anvikar, AR, Arinaitwe, E, Ashley, EA, Ashurst, H, Asih, PBS, Bakyaita, N, Barennes, H, Barnes, K, Basco, L, Bassat, Q, Baudin, E, Bell, DJ, Bethell, D, Bjorkman, A, Boulton, C, Bousema, T, Brasseur, P, Bukirwa, H, Burrow, R, Carrara, V, Cot, M, D'Alessandro, U, Das, D, Das, S, Davis, TME, Desai, M, Djimde, AA, Dondorp, AM, Dorsey, G, Drakeley, CJ, Duparc, S, Espie, E, Etard, J-F, Falade, C, Faucher, JF, Filler, S, Fogg, C, Fukuda, M, Gaye, O, Genton, B, Rahim, AG, Gilayeneh, J, Gonzalez, R, Grais, RF, Grandesso, F, Greenwood, B, Grivoyannis, A, Hatz, C, Hodel, EM, Humphreys, GS, Hwang, J, Ishengoma, D, Juma, E, Kachur, SP, Kager, PA, Kamugisha, E, Kamya, MR, Karema, C, Kayentao, K, Kazienga, A, Kiechel, J-R, Kofoed, P-E, Koram, K, Kremsner, PG, Lalloo, DG, Laman, M, Lee, SJ, Lell, B, Maiga, AW, Martensson, A, Mayxay, M, Mbacham, W, McGready, R, Menan, H, Menard, D, Mockenhaupt, F, Moore, BR, Muller, O, Nahum, A, Ndiaye, J-L, Newton, PN, Ngasala, BE, Nikiema, F, Nji, AM, Noedl, H, Nosten, F, Ogutu, BR, Ojurongbe, O, Osorio, L, Ouedraogo, J-B, Owusu-Agyei, S, Pareek, A, Penali, LK, Piola, P, Plucinski, M, Premji, Z, Ramharter, M, Richmond, CL, Rombo, L, Rosenthal, PJ, Salman, S, Same-Ekobo, A, Sibley, C, Sirima, SB, Smithuis, FM, Some, FA, Staedke, SG, Starzengruber, P, Strub-Wourgaft, N, Sutanto, I, Swarthout, TD, Syafruddin, D, Talisuna, AO, Taylor, WR, Temu, EA, Thwing, J, Tinto, H, Tjitra, E, Toure, OA, Tran, TH, Ursing, J, Valea, I, Valentini, G, van Vugt, M, von Seidlein, L, Ward, SA, Were, V, White, NJ, Woodrow, CJ, Yavo, W, Yeka, A, Zongo, I, Simpson, JA, Guerin, PJ, Stepniewska, K, Price, RN, Roper, C, Mansoor, R, Commons, RJ, Douglas, NM, Abuaku, B, Achan, J, Adam, I, Adjei, GO, Adjuik, M, Alemayehu, BH, Allan, R, Allen, EN, Anvikar, AR, Arinaitwe, E, Ashley, EA, Ashurst, H, Asih, PBS, Bakyaita, N, Barennes, H, Barnes, K, Basco, L, Bassat, Q, Baudin, E, Bell, DJ, Bethell, D, Bjorkman, A, Boulton, C, Bousema, T, Brasseur, P, Bukirwa, H, Burrow, R, Carrara, V, Cot, M, D'Alessandro, U, Das, D, Das, S, Davis, TME, Desai, M, Djimde, AA, Dondorp, AM, Dorsey, G, Drakeley, CJ, Duparc, S, Espie, E, Etard, J-F, Falade, C, Faucher, JF, Filler, S, Fogg, C, Fukuda, M, Gaye, O, Genton, B, Rahim, AG, Gilayeneh, J, Gonzalez, R, Grais, RF, Grandesso, F, Greenwood, B, Grivoyannis, A, Hatz, C, Hodel, EM, Humphreys, GS, Hwang, J, Ishengoma, D, Juma, E, Kachur, SP, Kager, PA, Kamugisha, E, Kamya, MR, Karema, C, Kayentao, K, Kazienga, A, Kiechel, J-R, Kofoed, P-E, Koram, K, Kremsner, PG, Lalloo, DG, Laman, M, Lee, SJ, Lell, B, Maiga, AW, Martensson, A, Mayxay, M, Mbacham, W, McGready, R, Menan, H, Menard, D, Mockenhaupt, F, Moore, BR, Muller, O, Nahum, A, Ndiaye, J-L, Newton, PN, Ngasala, BE, Nikiema, F, Nji, AM, Noedl, H, Nosten, F, Ogutu, BR, Ojurongbe, O, Osorio, L, Ouedraogo, J-B, Owusu-Agyei, S, Pareek, A, Penali, LK, Piola, P, Plucinski, M, Premji, Z, Ramharter, M, Richmond, CL, Rombo, L, Rosenthal, PJ, Salman, S, Same-Ekobo, A, Sibley, C, Sirima, SB, Smithuis, FM, Some, FA, Staedke, SG, Starzengruber, P, Strub-Wourgaft, N, Sutanto, I, Swarthout, TD, Syafruddin, D, Talisuna, AO, Taylor, WR, Temu, EA, Thwing, J, Tinto, H, Tjitra, E, Toure, OA, Tran, TH, Ursing, J, Valea, I, Valentini, G, van Vugt, M, von Seidlein, L, Ward, SA, Were, V, White, NJ, Woodrow, CJ, Yavo, W, Yeka, A, Zongo, I, Simpson, JA, Guerin, PJ, Stepniewska, K, Price, RN, and Roper, C

Abstract

BACKGROUND: Plasmodium falciparum malaria is associated with anaemia-related morbidity, attributable to host, parasite and drug factors. We quantified the haematological response following treatment of uncomplicated P. falciparum malaria to identify the factors associated with malarial anaemia. METHODS: Individual patient data from eligible antimalarial efficacy studies of uncomplicated P. falciparum malaria, available through the WorldWide Antimalarial Resistance Network data repository prior to August 2015, were pooled using standardised methodology. The haematological response over time was quantified using a multivariable linear mixed effects model with nonlinear terms for time, and the model was then used to estimate the mean haemoglobin at day of nadir and day 7. Multivariable logistic regression quantified risk factors for moderately severe anaemia (haemoglobin < 7 g/dL) at day 0, day 3 and day 7 as well as a fractional fall ≥ 25% at day 3 and day 7. RESULTS: A total of 70,226 patients, recruited into 200 studies between 1991 and 2013, were included in the analysis: 50,859 (72.4%) enrolled in Africa, 18,451 (26.3%) in Asia and 916 (1.3%) in South America. The median haemoglobin concentration at presentation was 9.9 g/dL (range 5.0-19.7 g/dL) in Africa, 11.6 g/dL (range 5.0-20.0 g/dL) in Asia and 12.3 g/dL (range 6.9-17.9 g/dL) in South America. Moderately severe anaemia (Hb < 7g/dl) was present in 8.4% (4284/50,859) of patients from Africa, 3.3% (606/18,451) from Asia and 0.1% (1/916) from South America. The nadir haemoglobin occurred on day 2 post treatment with a mean fall from baseline of 0.57 g/dL in Africa and 1.13 g/dL in Asia. Independent risk factors for moderately severe anaemia on day 7, in both Africa and Asia, included moderately severe anaemia at baseline (adjusted odds ratio (AOR) = 16.10 and AOR = 23.00, respectively), young age (age < 1 compared to ≥ 12 years AOR = 12.81 and AOR = 6.79, respectively), high parasitaemia (AOR = 1.78 and AOR = 1.

Published
2022

21. Transcriptome Analysis of Plasmodium falciparum Isolates From Benin Reveals Specific Gene Expression Associated With Cerebral Malaria.

Author

Guillochon, E, Fraering, J, Joste, V, Kamaliddin, C, Vianou, B, Houzé, L, Baudrin, L G, Faucher, J F, Aubouy, A, Houzé, S, Cot, M, Argy, N, Taboureau, O, Bertin, G I, group, NeuroCM, and NeuroCM group

Abstract

Cerebral malaria (CM) is the severest form of Plasmodium falciparum infection. Children under 5 years old are those most vulnerable to CM, and they consequently have the highest risk of malaria-related death. Parasite-associated factors leading to CM are not yet fully elucidated. We therefore sought to characterize the gene expression profile associated with CM, using RNA sequencing data from 15 CM and 15 uncomplicated malaria isolates from Benin. Cerebral malaria parasites displayed reduced circulation times, possibly related to higher cytoadherence capacity. Consistent with the latter, we detected increased var genes abundance in CM isolates. Differential expression analyses showed that distinct transcriptome profiles are signatures of malaria severity. Genes involved in adhesion, excluding variant surface antigens, were dysregulated, supporting the idea of increased cytoadhesion capacity of CM parasites. Finally, we found dysregulated expression of genes in the entry into host pathway that may reflect greater erythrocyte invasion capacity of CM parasites. [ABSTRACT FROM AUTHOR]

Published
2022
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24. Vaccinations

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, and Odermatt-Biays, S., additional

Published
2009
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29. Fiches maladies

Author

Bouchaud, O., primary, Consigny, P.-H., additional, Cot, M., additional, and Odermatt-Biays, S., additional

Published
2009
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37. J Infect Dis

Author

Agbota, G., Accrombessi, M., Cottrell, G., MARTIN-PREVEL, Y., Milet, J., Ouedraogo, S., Courtin, D., Massougbodji, A., Garcia, A., Cot, M., BRIAND, Valerie, Bordeaux population health (BPH), and Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM)

Subjects
IDLIC, parasitic diseases, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie
Abstract

Background: According to the DOHaD paradigm, the foetal period is one of the most vulnerable periods that may have profound effects on health later in life. Few studies have assessed the effect of small-birth-weight-for-gestational age (SGA), a proxy for foetal growth impairment, on the risk of malaria during infancy in Africa. Methods: We used data from a cohort of 398 mother-child pairs, followed from early pregnancy to age one in Benin. Infant's malaria was actively and passively screened using thick blood smear. A logistic mixed regression model was performed to assess the effect of SGA on the risk of both malaria infection and clinical malaria from birth to age one, after stratifying on the infant's age. Results: After adjustment for potential confounding factors, as well as the infant's level of exposure to mosquitoes, SGA was associated with a 2-times higher risk of both malaria infection (aOR= 2.16, 95%CI: 1.04-4.51, p=0.039) and clinical malaria (aOR= 2.33, 95%CI: 1.09-4.98, p=0.030) after 6 months of age. Conclusion: Our results suggest a higher risk of malaria during the second semester of life in SGA infants. They argue for a better follow-up of these infants after birth as currently done for preterm babies.

Published
2019

38. Maternal Urinary Schistosomiasis and Malaria Before Conception and During Pregnancy Are Associated with Child's Early Haemoglobin Concentrations and Risk of Infections: A Longitudinal Preconceptional Cohort in Benin

Author

Agbota, G., Polman, K., Wieringa, F., Campos-Ponce, M., Fievet, N., Accrombessi, M., Yovo, E., Roucher, C., Pachot, A., Ganee, L., Tissieres, P., Massougbodji, A., Cot, M., Briand, V., SERRE, Marie-Claude, Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Endotoxines, Structures et Réponses de l'hôte (ESHR), Département Microbiologie (Dpt Microbio), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio]
Abstract

WOS:000493064400615

Published
2019

39. Clin Infect Dis

Author

Accrombessi, M., Yovo, E., Fievet, N., Cottrell, G., Agbota, G., Gartner, A., MARTIN-PREVEL, Y., VIANOU, B., SOSSOU, D., FANOU-FOGNY, N., DJOSSINOU, D., Massougbodji, A., Cot, M., BRIAND, Valerie, Bordeaux population health (BPH), and Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM)

Subjects
IDLIC, parasitic diseases, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie
Abstract

Background: In sub-Saharan Africa, malaria in the first half of pregnancy is harmful for both the mother and her foetus. However, malaria in the 1st trimester of pregnancy, when women are usually not protected against malaria, has been little investigated. For the first time, we assessed the effects of malaria in the 1st trimester on maternal and birth outcomes using a preconceptional study design. Methods: From June 2014 to March 2017, 1214 women of reproductive age were recruited and followed monthly until 411 became pregnant. Pregnant women were then followed from 5-6 weeks of gestation until delivery. Path analysis was used to assess the direct effect (i.e., not mediated by malaria in the 2nd or 3rd trimester) of malaria in the 1st trimester on maternal anaemia and poor birth outcomes. The cumulative effect of infections during pregnancy on the same outcomes was also evaluated. Results: The prevalence of malaria infection in the 1st trimester was 21.8%. Malaria in the 1st trimester was significantly associated with maternal anaemia in the 3rd trimester (adjusted odds ratio [aOR]: 2.25, 95% CI 1.11, 4.55). While we did not evidence any direct effect of 1st trimester malaria infections on birth outcomes, their association with infections later in pregnancy tended to increase the risk of low birthweight. Conclusions : alaria infections in the 1st trimester were highly prevalent and have deleterious effects on maternal anaemia. They highlight the need for additional preventive measures starting in early pregnancy, or even before conception.

Published
2019

44. New redox process successful in high-pressure gas streams. (Gas Processing)

Author

Strat, P.Y. Le, Cot, M., Ballaguet, J.P., Ambrosino, J.L., Streicher, C., and Cousin, J.P.

Subjects
Business, Petroleum, energy and mining industries
Abstract

The new redox Sulfint HP process desulfurizes natural gas efficiently at high pressures. The process, developed by Institut Francais du Petrole (IFP) and Le Gaz Integral (LGI) in association with [...]

Published
2001

49. A longitudinal study of chronic lead exposure in Beninese children

Author

Fiévet N, Cot M, Shukrullah Ahmadi, Philippe Glorennec, Séverine Durand, Le Bot B, Zoumenou R, Ayotte P, Florence Bodeau-Livinec, and Massougbodji A

Subjects
Global and Planetary Change, Longitudinal study, Epidemiology, business.industry, Health, Toxicology and Mutagenesis, Environmental health, Lead exposure, Public Health, Environmental and Occupational Health, Medicine, business, Pollution
Published
2019

50. Fiches maladies

Author

Bouchaud, O., Consigny, P.-H., Cot, M., and Odermatt-Biays, S.

Subjects
Article
Published
2011

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