31 results on '"G. Tolosa"'
Search Results
2. T-cell responses to SARS-CoV-2 in patients during acute disease, convalescence and after vaccination
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G Safont-Gonzalez, I Latorre, R Villar-Hernández, Z Stojanovic, A Marín, C Perez-Cano, A Lacoma, B Molina-Moya, A J Solis, F Armestar, J Matllo, S Díaz-Fernández, A Cendón, L Sokalchuk, G Tolosa, I Casas, A Rosell, and J Dominguez
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- 2022
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3. La restricción dietaria de calcio produce alteraciones metabólicas
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Ana M. Marchionatti, Viviana A. Centeno, Gabriela E. Díaz de Barboza, Valeria A. Rodríguez, and Nori G. Tolosa de Talamoni
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dietas deficientes en calcio ,metabolismo hormonal ,cáncer ,hueso ,Medicine ,Medicine (General) ,R5-920 - Abstract
El calcio (Ca2+) es fundamental para la formación de los huesos y dientes y es esencial para alcanzar el pico de masa ósea. Además, el Ca2+ es un importante regulador de diferentes procesos fisiológicos. Los requerimientos diarios de Ca2+ dependen de la edad, sexo y diferentes estados fisiológicos, siendo mayores en los adolescentes, en el embarazo y en la lactancia. Con dietas deficientes en Ca2+, la secreción de distintas hormonas calciotrópicas se modifica y el transporte duodenal y la reabsorción renal del catión se incrementan, por lo que el metabolismo óseo también está fuertemente alterado. Hay también evidencias de que existe asociación entre la baja ingesta de Ca2+ y la hipertensión arterial e incremento en el riesgo de contraer cáncer.
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- 2009
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4. Intestinal Ca2+ absorption revisited: A molecular and clinical approach
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Areco, Vanessa A, primary, Kohan, Romina, additional, Talamoni, Germán, additional, Talamoni, Nori G Tolosa de, additional, and López, María E Peralta, additional
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- 2020
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5. Comparison of plasma pigment epithelium-derived factor (PEDF), retinol binding protein 4 (RBP-4), chitinase-3-like protein 1 (YKL-40) and brain-derived neurotrophic factor (BDNF) for the identification of insulin resistance
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M.L. Arévalo-García, Freddy J.K. Toloza, Maria Camila Perez-Matos, Jairo A Pinzón-Cortés, G. Tolosa-González, M. C. Morales-Alvarez, Jose Oscar Mantilla-Rivas, Maria Laura Ricardo-Silgado, Carlos O. Mendivil, and Maritza Perez-Mayorga
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Adult ,Male ,medicine.medical_specialty ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Adipokine ,030209 endocrinology & metabolism ,030204 cardiovascular system & hematology ,Diagnostic Techniques, Endocrine ,Prediabetic State ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,PEDF ,Insulin resistance ,Neurotrophic factors ,Internal medicine ,Diabetes mellitus ,Glucose Intolerance ,Internal Medicine ,medicine ,Humans ,Chitinase-3-Like Protein 1 ,Nerve Growth Factors ,Obesity ,Eye Proteins ,Serpins ,Aged ,Brain-derived neurotrophic factor ,Retinol binding protein 4 ,biology ,business.industry ,Insulin ,Brain-Derived Neurotrophic Factor ,Glucose Tolerance Test ,Middle Aged ,medicine.disease ,biology.protein ,Glucose Clamp Technique ,Female ,Insulin Resistance ,business ,Retinol-Binding Proteins, Plasma ,Biomarkers - Abstract
Aims To evaluate and compare the association of four potential insulin resistance (IR) biomarkers (pigment-epithelium-derived factor [PEDF], retinol-binding-protein-4 [RBP-4], chitinase-3-like protein 1 [YKL-40] and brain-derived neurotrophic factor [BDNF]) with objective measures of IR. Methods We studied 81 subjects with different metabolic profiles. All participants underwent a 5-point OGTT with calculation of multiple IR indexes. A subgroup of 21 participants additionally underwent a hyperinsulinemic-euglycemic clamp. IR was defined as belonging to the highest quartile of incremental area under the insulin curve (iAUCins), or to the lowest quartile of the insulin sensitivity index (ISI). Results PEDF was associated with adiposity variables. PEDF and RBP4 increased linearly across quartiles of iAUCins (for PEDF p-trend = 0.029; for RBP-4 p-trend = 0.053). YKL-40 and BDNF were not associated with any adiposity or IR variable. PEDF and RBP-4 levels identified individuals with IR by the iAUCins definition: A PEDF cutoff of 11.9 ng/mL had 60% sensitivity and 68% specificity, while a RBP-4 cutoff of 71.6 ng/mL had 70% sensitivity and 57% specificity. In multiple regression analyses simultaneously including clinical variables and the studied biomarkers, only BMI, PEDF and RBP-4 remained significant predictors of IR. Conclusions Plasma PEDF and RBP4 identified IR in subjects with no prior diagnosis of diabetes.
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- 2017
6. Power calculations and placebo effect for future clinical trials in progressive supranuclear palsy
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Stamelou, M. Schöpe, J. Wagenpfeil, S. Del Ser, T. Bang, J. Lobach, I.Y. Luong, P. Respondek, G. Oertel, W.H. Boxer, A. Höglinger, G.U. Williams, D. Lafontaine, A.L. Marras, C. Jog, M. Panisset, M. Lang, A. Parker, L. Stewart, A.J. Corvol, J.-C. Azulay, J.-P. Couratier, P. Mollenhauer, B. Lorenzl, S. Ludolph, A. Benecke, R. Hoglinger, G. Lipp, A. Reichmann, H. Woitalla, D. Chan, D. Zermansky, A. Burn, D.J. Lees, A. Boxer, A. Miller, B.L. Lobach, I.V. Roberson, E. Honig, L. Zamrini, E. Pahwa, R. Bordelon, Y. Driver-Dunkley, E. Lessig, S. Lew, M. Womack, K. Boeve, B. Ferrara, J. Hillis, A. Kaufer, D. Kumar, R. Xie, T. Gunzler, S. Zesiewicz, T. Dayalu, P. Golbe, L. Grossman, M. Jankovic, J. McGinnis, S. Santiago, A. Tuite, P. Isaacson, S. Leegwater-Kim, J. Litvan, I. Grossman, M. Knopman, D.S. Schneider, L.S. Doody, R.S. Golbe, L. Koestler, M. Jack, C.R. Van Deerlin, V. Randolph, C. Gozes, I. Whitaker, S. Hirman, J. Gold, M. Morimoto, B.H. Gómez, J.C. Tijero, B. Berganzo, K. García de Yebenes, J. Lopez Sendón, J.L. Garcia, G. Tolosa, E. Buongiorno, M.T. Bargalló, N. Burguera, J.A. Martinez, I. Ruiz-Martínez, J. Narrativel, I. Vivancos, F. Ybot, I. Aguilar, M. Quilez, P. Boada, M. Lafuente, A. Hernandez, I. López-Lozano, J.J. Mata, M. Kupsch, A. Lipp, A. Ebersbach, G. Schmidt, T. Hahn, K. Hoglinger, G. Hollerhage, M. Reichmann, H. Wolz, M. Schneider, C. Klingelhofer, L. Berg, D. Maetzler, W. Srulijes, K.K. Ludolph, A. Kassubek, J. Steiger, M. Tyler, K. Morris, L. Lees, A. Ling, H. Hauser, R. McClain, T. Truong, D. Jenkins, S. Litvan, I. Houghton, D. Ferrara, J. Bordelon, Y. Gratiano, A. Golbe, L. Mark, M. Uitti, R. Ven Gerpen, J. Bhatia, K. Bordelon, Y.M. Colosimo, C. Dodel, R. Josephs, K.A. Morris, H. Mueller, U. Paviour, D. Schellenberg, G. Steele, J. van Swieten, J.C. Whitwell, J. Tau Restoration on PSP (TAUROS) Investigators The MDS-Endorsed PSP Study Group
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eye diseases - Abstract
Background: Two recent randomized, placebo-controlled trials of putative disease-modifying agents (davunetide, tideglusib) in progressive supranuclear palsy (PSP) failed to show efficacy, but generated data relevant for future trials. Methods: We provide sample size calculations based on data collected in 187 PSP patients assigned to placebo in these trials. A placebo effect was calculated. Results: The total PSP-Rating Scale required the least number of patients per group (N=51) to detect a 50% change in the 1-year progression and 39 when including patients with ≤ 5 years disease duration. The Schwab and England Activities of Daily Living required 70 patients per group and was highly correlated with the PSP-Rating Scale. A placebo effect was not detected in these scales. Conclusions: We propose the 1-year PSP-Rating Scale score change as the single primary readout in clinical neuroprotective or disease-modifying trials. The Schwab and England Activities of Daily Living could be used as a secondary outcome. © 2016 International Parkinson and Movement Disorder Society.
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- 2016
7. [Metabolic alterations triggered by low calcium diets]
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A M, Marchionatti, V A, Centeno, G E, Díaz Barbosa, V A, Rodriguez, and N G, Tolosa de Talamoni
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Calcium, Dietary ,Intestinal Absorption ,Parathyroid Hormone ,Humans ,Kidney ,Bone and Bones ,Diet - Abstract
Calcium is essential for bone and tooth formation, achievement of optimal peak bone mass and also for regulation of physiological processes. The calcium demand depends on age, gender and different physiological processes. These requirements are higher during childhood, pregnancy and lactation. Dietary Ca2+ deficiency modifies Ca2+ homeostasis and the metabolism of calciotropic hormones and increases the efficiency of intestinal Ca2+ absorption and renal reabsorption, altering bone metabolism. The low Ca2+ diet is associated with hypertension and risk of cancer.
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- 2010
8. Minireview on regulation of intestinal calcium absorption. Emphasis on molecular mechanisms of transcellular pathway
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Adriana V, Pérez, Gabriela, Picotto, Agata R, Carpentieri, María A, Rivoira, María E, Peralta López, and Nori G, Tolosa de Talamoni
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Calcitriol ,Intestinal Absorption ,Animals ,Humans ,Calcium ,Calcium Signaling ,Intestinal Mucosa ,Hormones - Abstract
An overview of current information on the mechanisms by which intestinal calcium absorption occurs is described in this article. Both paracellular and transcellular pathways are analyzed. Special emphasis focuses on molecules participating in the latter pathway, such as TRPV5 and TRPV6 channels, located in the apical region of the enterocytes, CB(9k) and CB(28k), presumably involved in the cation movement from the apical to the basolateral pole of the cell, and PMCA(1b) and Na(+)/Ca(2+) exchanger, proteins that extrude Ca(2+) from the cells. Current concepts on the relative importance of paracellular and transcellular calcium transport and the vitamin D dependence of each pathway are referred and analyzed showing the contrasting views on this issue. More detailed information is given regarding the stimulatory effect of vitamin D on intestinal Ca(2+) absorption either in animal models or in the human intestine. The possible mechanisms triggered by hormones such as PTH, calcitonin, estrogen, thyroid hormone, glucocorticoids and different nutritional factors on intestinal calcium absorption are also reviewed. Finally, the influence of physiological conditions such as growth, pregnancy, lactation and aging on intestinal calcium absorption are discussed.
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- 2008
9. P86 Le réseau santé de haute alsace optimise le suivi des diabétiques dans son bassin de vie et réduit de plus d’un tiers les complications dues au diabète
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G. Ehald, A. Lichtle, S. Pflimlin, S. Moser, R. Muller, E. Miranda, P. Thannberger, G. Tolosa, C. Weigel, S. Schmitt, A. Haennig, C. Perez, A. Derragui, and J.M. Wilhelm
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Endocrinology ,Endocrinology, Diabetes and Metabolism ,Internal Medicine ,General Medicine - Abstract
Introduction Le Reseau Sante de Haute Alsace, confronte a une prevalence du diabete superieure de 20 % a la moyenne nationale et a une demographie medicale declinante dans son bassin de recrutement, a concu en 2002 une plateforme pluridisciplinaire et multiservice d'accueil des personnes diabetiques au service des medecins traitants. A l'occasion de ses 10 ans de fonctionnement, il a evalue les resultats de son activite. Materiels et methodes L'analyse a porte sur des files actives annuelles comparees a l'etude ENTRED (et au registre OPHDIAT pour l'activite retinographique) þ; l'impact sur l'environnement a ete mesure sur l'ensemble des resultats d'hemoglobine A1c observes dans le bassin de recrutement au premier semestre 2013, compares a ceux d'ENTRED et ceux d'un bassin de vie contigu. Resultats Le reseau a offert : 1. Un meilleur controle de la glycemie, du tabac, du LDL cholesterol avec un maintien dans la duree des resultats obtenus 2. Un depistage systematise des complications microangiopathiques 3. Une reduction significative (p Conclusion Le reseau a permis une reduction de morbidite et une amelioration des pratiques dans une population particulierement exposee au diabete et souffrant de ressources medicales restreintes.
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- 2014
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10. Calcium and phosphorous deficiencies alter the lipid composition and fluidity of intestinal basolateral membranes
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Nori G. Tolosa de Talamoni
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Male ,Analysis of Variance ,Membrane Fluidity ,Cell Membrane ,chemistry.chemical_element ,Fluorescence Polarization ,Phosphorus ,General Medicine ,Calcium ,Adaptation, Physiological ,Intestinal absorption ,Palmitic acid ,Intestines ,chemistry.chemical_compound ,Oleic acid ,Membrane Lipids ,chemistry ,Biochemistry ,Docosahexaenoic acid ,Phosphatidylcholine ,Animals ,Docosapentaenoic acid ,Phosphatidylinositol ,Chickens - Abstract
Steady-state fluorescence polarization and lipid composition studies were undertaken on intestinal basolateral membranes (BLM) from chicks adapted to a calcium deficient (low Ca) or a phosphorus deficient diet (low P). The fluorescence anisotropy showed that fluidity of intestinal BLM was increased by the mineral deprivations, but the response of the membranes varied with the specific fluorophore used. The “static” component of fluidity, assessed by 1,6-diphenyl-1,3,5-hexatriene (DPH), was increased whereas the “dynamic” component, monitored with DL-12-(9-anthroyloxy)-stearic acid (12-AS), was not modified. Low P diet produced significant changes in lipid composition such as a decrease in the cholesterol content and in the sphyngomyelin (Sph) and phosphatidylserine plus phosphatidylinositol fractions (PS + PI) and increment in the phosphatidylcholine (PC) proportion. The percent of monounsaturated fatty acids was increased by the low P diet due mainly to an increase in the oleic acid fraction. Minor changes such as a decrease in the palmitic acid and increases in the 22:5n3 and 22:6n3 fatty acids were caused by Ca deficiency. The alteration of the biochemical and biophysical membrane properties of the BLM of the mineral deficient groups might play a role in the enhanced intestinal Ca and P absorption.
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- 1996
11. P88 - Suivi de pompes a insuline en réseau de santé Expérience du Réseau Santé de Haute Alsace
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A. Lichtle, A. Haennig, S. Pflimlin, G. Tolosa, M. Faller, S. Demark, H. Grienenberger, J.-M. Wilhelm, and C. Weigel
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Endocrinology ,Endocrinology, Diabetes and Metabolism ,Internal Medicine ,General Medicine - Abstract
Introduction Le territoire de sante 4 d’Alsace (region de Mulhouse) est marque par une prevalence importante de diabete et une demographie medicale declinante ne disposant notamment que de deux endocrinologues-diabetologues liberaux a Mulhouse. Les reseaux sante diabete sont generalement concus pour accueillir preferentiellement les diabetiques de type 2. Le Reseau de Haute Alsace etant ouvert a tout diabetique quelle qu’en soit sa typologie d’une part et un nombre croissant de diabetiques de type II insulinorequerants recourant a un traitement par pompe d’autre part, nous avons etudie la faisabilite et l’interet d’initier une prise en charge de patients porteurs de pompe. Cette strategie permet notamment aux patients un acces a l’education therapeutique pluridisciplinaire disponible au reseau, et a un accompagnement qu’un prestataire de service ne peut leur delivrer directement. Materiels et methodes Le Reseau Sante de Haute Alsace a developpe une plate-forme pluridisciplinaire (comportant medecins, infirmieres, dieteticiennes, psychologue, psychiatre comportementaliste, podologue, educateur sportif…) et multiservice, assurant coordination et education therapeutique, depistage, prevention, information, accompagnement telephonique, telemedecine… Le reseau a ouvert l’acces a ses prestations aux diabetiques de type I comme de type II dans le respect des specificites inherentes a chaque pathologie permettant a chaque patient de beneficier des ressources pouvant le concerner. Certains patients adherents au reseau ayant accede a une insulinotherapie par pompe, le reseau a ouvert une consultation qui leur est specifiquement dediee et mis en place des espaces de communications avec les personnels des societes prestataires concernees. Resultats En 2010, le reseau a suivi 50 patients sous pompe dont 45 de type I et 5 de type II. Nous avons etudie : – Les caracteristiques demographiques et medicales des patients suivis ; – Les niveaux d’adhesion aux bilans de suivi et de depistage et les resultats de ces bilans ; – La participation aux differents services offerts par le reseau ; – Le nombre d’hospitalisations en service conventionnel et aux urgences ; – Le niveau de satisfaction exprime par rapport aux ressources proposees. Conclusion Notre experience confirme la faisabilite et l’interet d’une prise en charge complementaire par un reseau diabete de patients traites par insulinotherapie par pompe notamment dans un contexte de ressources medicales reduites.
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- 2011
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12. 7.3Correlation of left ventricular ejection fraction and left ventricular volumes between attenuation-corrected and non-attenuation corrected gated SPECT images using x-ray computed tomography
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F. Roffe, Enrique Vallejo, Salvador Hernández, Luis Jimenez, G. Tolosa, and David Bialostozky
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Ejection fraction ,X ray computed ,business.industry ,Attenuation ,Gated SPECT ,Medicine ,Radiology, Nuclear Medicine and imaging ,Tomography ,Cardiology and Cardiovascular Medicine ,Nuclear medicine ,business - Published
- 2007
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13. Preliminary analysis of first trimester exposure to oxycodone and hydrocodone
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G. Tolosa, M. Hom, A. Donnenfeld, R. Librizzi, and B. Schick
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First trimester ,medicine.medical_specialty ,Hydrocodone ,business.industry ,Obstetrics ,Medicine ,Toxicology ,business ,Oxycodone ,medicine.drug ,Preliminary analysis - Published
- 1996
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14. Oxidative stress, cell cycle arrest and differentiation contribute toward the antiproliferative action of BSO and calcitriol on Caco-2 cells
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Liaudat, Ana C., Bohl, Luciana P., Talamoni, Nori G. Tolosa de, Maletto, Belkys, Pistoresi-Palencia, María C., and Picotto, Gabriela
- Abstract
The prognosis and incidence of colon cancer are linked to vitamin D3serum levels. To evaluate the effects of D,L-buthionine-S,R-sulfoximine (BSO), 1,25(OH)2D3and their combination on intestinal Caco-2 cell growth, to elucidate the possible cellular mechanisms involved in their antiproliferative action, and to determine whether BSO acts as a sensitizer to 1,25(OH)2D3treatment, enabling minimization of the toxic effects caused by high doses of the steroid. Human colon cancer Caco-2 cells were treated with 1,25(OH)2D3, BSO, both, or vehicle. Cell proliferation was evaluated by crystal violet staining. Cell cycle and mitochondrial membrane potential were measured by flow cytometry. Total glutathione, catalase, superoxide dismutase, superoxide anion levels, and alkaline phosphatase activities were analyzed by spectrophotometry. DNA fragmentation was evaluated using the terminal dUTP nick end labeling assay. BSO and 1,25(OH)2D3inhibited Caco-2 cell growth, an effect that was higher with the combined treatment. The antiproliferative effect produced by the combination could be protected by ascorbic acid. BSO plus 1,25(OH)2D3induced cell cycle arrest and suppressed cell division. Total glutathione decreased and superoxide anion increased with BSO and BSO plus 1,25(OH)2D3. Catalase activity increased with the combined treatment. Mitochondrial membrane potential and alkaline phosphatase activity were altered by 1,25(OH)2D3alone or plus BSO. The percentage of terminal dUTP nick end labeling-positive cells was increased. BSO increases the antiproliferative effect of 1,25(OH)2D3on Caco-2 cells through induction of oxidative stress, which occurs simultaneously with DNA breakage. The antioxidant system can partially compensate the damage induced by BSO plus 1,25(OH)2D3. Cell differentiation induction is also involved in the response to the combined treatment.
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- 2014
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15. Prevalence of celiac disease-specific antibodies and their association with clinical status and environmental factors.
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de Diego GA, Cerny N, Tolosa G, Lulic M, Fusco M, Belforte FS, Martínez Ruiz B, Tamborenea MI, Cánepa A, Cimarelli M, Ghiglieri R, Díaz E, Giorgi E, Pérez C, Gassmann M, Malchiodi E, Iácono R, and De Marzi MC
- Abstract
Background and Aims: Celiac disease (CeD) affects 1-2% of the world's population. The aim of this study was to relate the incidence of CeD-related serological markers to symptoms, pathologies, and environmental exposure to wheat flour, given the number of flour mills present in the region., Materials & Methods: Serum samples were collected from 537 inhabitants from a rural city. Levels of anti-transglutaminase (a-tTg), anti-gliadin, anti-DGP antibodies and total IgA levels were measured. Volunteers completed a questionnaire covering environmental factors, demographics, pregnancies, other diseases, symptoms, and CeD diagnosis. Geo-referencing of volunteers' homes and mills in the city was performed, and correlations between the different parameters assessed were analysed., Results: A CeD incidence of 1.76 % was found. However, a-tTg and a-gliadin levels were elevated in the population without CeD diagnosis (9.6 % and 30.1 %). Subjects with CD diagnosis showed diarrhoea and colic pain. Women with CeD had fewer pregnancies. Positive a-tTg and number of CeD-associated symptoms appear to correlate with proximity to flour mills., Conclusion: A high prevalence of CeD-related specific antibody positivity in a rural population was found, possibly due to environmental factors related to flour mills. Further research is needed to better understand CeD's pathogenesis and its health implications., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 Published by Elsevier Ltd.)
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- 2024
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16. A georeferenced database of the edaphic biota currently available for Argentina.
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Sanabria MCV, Velazco VN, Tolosa G, Falco LB, and Coviella CE
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Background: Soils have been studied and classified in terms of their physical and chemical characteristics, while the knowledge about biodiversity and the ecosystem processes that they support is lagging behind. Furthermore, the advance in scientific knowledge contributed by different researchers is dispersed and it is necessary to collect it to bring the big picture into focus. Today, it is possible to have the findings and data collected by different researchers, compile them and, based on technological advances, have tools that allow the information to be analysed in its entirety. The main objective of this work is to compile and systematise all the bibliographic information available on the main organisms that make up biodiversity in the soil: Acari, Collembola and Crassiclitellata in Argentina. This information will then allow us to link the composition and structure of the soil community with processes and flows in the ecosystem, and to estimate them at different scales and in soils with different anthropic impact. The database presented here gathers presence information on the mentioned taxa, their geographical location for the entire country, while preserving the identity and authorship of each scientific work retrieved. The taxonomic range of the organisms of the edaphic biota collected in this database ranges from class to subspecies and are registered, based on the taxonomic level reported by the original author in their research. The publications were obtained from Google Scholar, Scopus and JSTOR. In addition, records were added from INEDES theses, library searches, information requested from authors cited in other articles and unpublished works. In total, information was collected from 224 scientific publications, as well as personal information requested directly from some authors. The total number of registered individuals so far is 4838 of which 3049 specimens correspond to Acari, 944 to Classiclitellata and 845 belong to Collembola., New Information: This work is the first to gather, in a single publication, the entire dataset for all the Acari, Collembola and Clitellata recorded for Argentina., (María C.V. Sanabria, Víctor N. Velazco, Gabriel Tolosa, Liliana B. Falco, Carlos E. Coviella.)
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- 2023
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17. Poor glycemic control and its associated factors among children with type 1 diabetes mellitus in Harar, eastern Ethiopia: A cross-sectional study.
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Habteyohans BD, Hailu BS, Meseret F, Mohammed A, Berhanu Y, Alemu A, Tolosa G, Keneni M, and Desalew A
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- Adolescent, Child, Humans, Cross-Sectional Studies, Ethiopia epidemiology, Glycemic Control, Educational Status, Diabetes Mellitus, Type 1 epidemiology
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Background: Poor glycemic control increases the risk of acute metabolic derangements and long-term consequences, which are the main causes of morbidity and mortality. Maintaining adequate glycemic control is challenging for children with diabetes, particularly in resource-limited settings. There is a paucity of data on the magnitude of poor glycemic control and its predisposing factors in Ethiopian particularly in this study setting. Hence, we aimed to assess the magnitude of poor glycemic control and its associated factors among children and adolescents with type 1 diabetic mellitus in Jugol and Hiwot Fana Compressive Specialized University Hospitals in Harar, eastern Ethiopia., Methods: A facility-based cross-sectional study was conducted among 231 children and adolescents with type 1 diabetes mellitus in Jugol and Hiwot Fana Compressive Specialized University Hospitals. Participants were included consecutively in the follow-up clinic from November 15, 2022 to January 15, 2023. Data were collected through an interviewer-administered structured questionnaire and a review of medical records. A binary logistic regression model with an adjusted odds ratio (aOR) and a 95% confidence interval (CI) was used to identify the factors associated with poor glycemic control. Statistical significance was set at p < 0.05., Result: A total of 231 children and adolescents with type 1 diabetes mellitus were included. The magnitude of poor glycemic control was 166 (71.9%) with 95% CI 66.0-77.7%). In multivariable analysis, the age of the child (aOR = 0.19, 95% CI: 0.05-0.83), education of the caregiver (aOR = 4.13;95% CI: 1.82-9.46), meal frequency less than three (aOR = 3.28; 95% CI: 1.25-8.62), and consumption of forbidden foods (aOR = 3.17; 95% CI: 1.21-8.29) were factors significantly associated with poor glycemic control., Conclusion: Two-thirds of participants had poor glycemic control. There was a statistically significant association between the age of the child, education of the caregiver, meal frequency, and forbidden foods with poor glycemic control. To improve glycemic control, diabetes education on meal use and selection should be conducted during follow-up along with parent education., (© 2023. BioMed Central Ltd., part of Springer Nature.)
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- 2023
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18. Timely initiation of breastfeeding among women who gave birth by cesarean section in central Ethiopia, 2022: A cross-sectional study.
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Lonsako AA, Mezmur H, Gebreyesus A, Tolosa G, and Girma S
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- Pregnancy, Infant, Newborn, Humans, Female, Cross-Sectional Studies, Ethiopia epidemiology, Cognition, Cesarean Section, Breast Feeding
- Abstract
Background: Timely initiation of breastfeeding reduces the risk of neonatal mortality. However, there was paucity of literature on the timely initiation of breastfeeding among women who gave birth by cesarean section (CS) in Ethiopia. Thus, the aim of this study was to assess the magnitude of timely initiation of breastfeeding and factors associated with it among women who gave birth by CS in central Ethiopia., Methods: A facility-based cross-sectional study was conducted among 403 women who gave birth by CS. Data were collected by using an interviewer-administered questionnaire and observation checklist, entered into EpiData 4.6, and exported to statistical package for the social sciences (SPSS) version 26.Descriptive and multivariate logistic regression analyses were performed and statistical significance is declared at p<0.05., Results: The magnitude of timely initiation of breastfeeding was 47.4% [95% CI: (42.5, 52.6)]. Attending four or more antenatal care visits [(AOR): 2.27, 95%CI: (1.28, 4.02)], counseling during antenatal care [AOR: 4.78, 95% CI: (2.66, 8.60)], early skin to skin contact with newborn [AOR: 2.83, 95% CI: (1.60, 5.02)], post-delivery counseling [AOR: 2.93, 95% CI: (1.56, 5.50)], and getting assistance from health professionals [AOR: 3.07, 95% CI: (1.64, 5.75)] were factors associated with timely initiation of breastfeeding., Conclusions: The magnitude of timely initiation of breastfeeding in the study area was low. Strengthening counseling by health care practitioners during ANC and post-natal period should be prioritized to support women in initiating early skin-to-skin contact within one hour of birth is mandatory., Competing Interests: The authors have declared that no competing interests exist, (Copyright: © 2023 Lonsako et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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19. Risk factors associated with acute kidney injury in a pediatric intensive care unit in Addis Ababa Ethiopia: case-control study.
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Keneni M, Murugan R, Bizuwork K, Asfaw T, Tekle S, Tolosa G, and Desalew A
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- Child, Female, Humans, Child, Preschool, Male, Ethiopia epidemiology, Case-Control Studies, Critical Illness epidemiology, Intensive Care Units, Pediatric, Acute Kidney Injury epidemiology, Hypertension epidemiology
- Abstract
Background: Acute kidney injury (AKI) is a serious health problem in critically ill children. It is associated with poor treatment outcomes and high morbidity and mortality rates. Globally, one in three critically ill children suffers from acute kidney injury. However, limited data are available in Africa, particularly Ethiopia, which highlighting the risk factors related to acute kidney injury. Therefore, this study aimed to identify the risk factors associated with acute kidney injury among critically ill children admitted to the pediatric intensive care unit (PICU) at Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia., Methods: A facility-based unmatched case-control study was carried out on 253 (85 cases and 168 controls) critically ill children admitted to the pediatric intensive care unit from January 2011 to December 2021. Participants were selected using a systematic random sampling technique for the control group and all cases consecutively. Data were collected using a structured checklist. Data were entered using Epi data version 4.6 and analyzed using SPSS version 25. Multivariable analysis was carried out using the adjusted odds ratio (aOR) with a 95% confidence interval (CI) to identify associated factors with acute kidney injury. Statistical significance was set at P < 0.05., Results: The median age of the participants was two years. Approximately 55.6% of cases and 53.1% of controls were females. The diagnosis of hypertension (aOR = 5.36; 95% CI: 2.06-13.93), shock (aOR = 3.88, 95% CI: 1.85-8.12), exposure to nephrotoxic drugs (aOR = 4.09; 95% CI: 1. 45- 11.59), sepsis or infection aOR = 3.36; 95% CI: 1.42-7.99), nephritic syndrome (aOR = 2.97; 95% CI:1.19, 7.43), and use of mechanical ventilation aOR = 2.25, 95% CI: 1.12, 4.51) were significantly associated factors with acute kidney injury., Conclusion: The diagnosis of sepsis or infection, hypertension, shock, nephrotoxic drugs, demand for mechanical ventilation support, and nephritic syndrome increased the risk of AKI among critically ill children. Multiple risk factors for AKI are associated with illness and severity. All measures that ensure adequate renal perfusion must be taken in critically ill children with identified risk factors to prevent the development of AKI., (© 2023. BioMed Central Ltd., part of Springer Nature.)
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- 2023
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20. Neonatal Birth Trauma and Its Predisposing Factors Among Newborns Admitted to Public Hospitals in Eastern Ethiopia: A Cross-Sectional Study.
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Tolosa G, Assefa N, Keneni M, Lonsako AA, and Desalew A
- Abstract
Objectives: This study is to investigate the magnitude and predisposing factors for neonatal birth trauma in public hospitals in eastern Ethiopia. It is a major cause of neonatal morbidity and mortality. Despite its higher burden, evidence is limited in eastern Ethiopia. Methods : A cross-sectional study was conducted on 492 newborns selected using systematic random sampling. Data were analyzed using a binary logistic regression model. Statistical significance was set at P < .05. Results: The magnitude of neonatal birth trauma was 16.9% with 95% CI: 13.7-20.5%). In multivariable analysis, instrumental delivery, early preterm (<34 weeks), macrosomia, fetal malpresentation, male sex and, facility-based delivery such as hospital and health center-based delivery were factors associated with neonatal birth trauma. Conclusions : The magnitude of neonatal birth trauma was relatively high. Promoting health facilities-based delivery, prevention of preterm birth, the early decision on the mode, and minimizing instrumental deliveries help reduce neonatal birth trauma., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2023.)
- Published
- 2023
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21. Hyponatremia and its associated factors in children admitted to the pediatric intensive care unit in eastern Ethiopia: a cross-sectional study.
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Berhanu Y, Yusuf T, Mohammed A, Meseret F, Demeke Habteyohans B, Alemu A, Tolosa G, Keneni M, Weldegebreal F, and Desalew A
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- Humans, Child, Cross-Sectional Studies, Ethiopia epidemiology, Intensive Care Units, Pediatric, Hyponatremia epidemiology, Hyponatremia etiology, Hyponatremia therapy, Sepsis
- Abstract
Background: Hyponatremia is a serious problem that leads to substantial increases morbidity and mortality in critically ill children. The identification of risk factors, implementation of preventive measures, and timely diagnosis and management are crucial to reduce adverse events related to hyponatremia. Despite the higher burden of the problem in Ethiopia, evidence related to the risk factors for hyponatremia among children in Ethiopia is limited; in particular, no study has been identified in eastern Ethiopia. Therefore, we aimed to determine the magnitude of hyponatremia and its associated factors in children admitted to the pediatric intensive care unit at the Hiwot Fana Comprehensive Specialized University Hospital., Methods: A facility-based cross-sectional study was conducted using 422 medical records of pediatric patients admitted to the pediatric intensive care unit at Hiwot Fana Comprehensive Specialized University Hospital from January 2019 to December 2022. Medical records were reviewed to collect data. Data were analyzed using a statistical package for social sciences (SPSS) version 26. A binary logistic regression model with an adjusted odds ratio (aOR) and a 95% confidence interval (CI) was used to identify factors associated with the outcome variable. Statistical significance was set at p < 0.05., Results: The magnitude of hyponatremia was 39.1% (95% CL: 34.4-43.8%). The age of the child (aOR = 2.37;95% CL:1.31-4.31), diagnosis of sepsis (aOR = 2.33; 95% CL:1.41-3.84), surgical procedures (aOR = 2.39; 95% CL:1.26-4.56), nutritional status (aOR = 2.60; 95% CL:1.51-4.49), and length of hospital stay (aOR = 3.04; 95% CL: 1.73-5.33) were factors significantly associated with hyponatremia., Conclusions: Four out of ten children admitted to pediatric intensive care units had hyponatremia. Hyponatremia was significantly associated with the age of the child, malnutrition, sepsis, surgical procedures, and length of hospital stay. To reduce the burden of hyponatremia and associated mortality, attention should be focused on improving the care of malnourished children, and those with sepsis, and the quality of postoperative monitoring services. Moreover, intervention strategies aimed at reducing the burden of hyponatremia should target the identified factors., (© 2023. The Author(s).)
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- 2023
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22. Participatory multi-criteria evaluation of landscape values to inform wildfire management.
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Gamboa G, Otero I, Bueno C, Arilla E, Ballart H, Camprubí L, Canaleta G, Tolosa G, and Castellnou M
- Subjects
- Acclimatization, Climate Change, Spain, Wildfires
- Abstract
Climate change is expected to increase the number of days with meteorological conditions conducive to uncontrollable wildfires. Thus, it is necessary to strengthen the capacity of wildfire-prone regions to minimize the adverse impacts of these wildfires by creating resilient landscapes. In this paper we develop a participatory multi-criteria evaluation to identify and map landscape values and prioritize areas according to these values in the Montseny Biophere Reserve (Catalonia, NE Spain). Then, we draft a wildfire management strategy to protect the areas that have been prioritized through selected fuel reduction sectors that would reduce wildfire intensity. Finally, we emphasize the added value of a participatory multi-criteria evaluation in the adaptation to and management of expected megafires. We find that the integration of landscape values through participatory multi-criteria evaluation has the potential to alter wildfire management strategies by adding fuel reduction sectors and changing their implementation order. However, the implementation of the planned fuel reduction treatments faces socioeconomic and institutional barriers that call for a deeper engagement with transdisciplinary project design and transformative science., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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23. Tongue Abscess: A Case Report.
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Mesfin T, Debele G, Seyoum K, Dadi S, Tsegaye M, Gomora D, Kene C, and Tolosa G
- Abstract
Introduction: Abscess of the tongue is a very rare disease that potentially compromises the airway. Acute tongue abscess symptoms include swelling or a lump in the deep tissues of the tongue, throbbing local pain, a discomfort that radiates to the ears, fever, difficulty swallowing, deliberate fixation of the tongue due to pain, and eventually, difficulties breathing., Case: This is a 50-year-old male patient who presented with a complaint of severe tongue pain and swelling of three days duration. Associated with this, he had pain while swallowing, difficulty opening his mouth, shortness of breath, and drooling saliva. Likewise, he had a high-grade fever and a global type of headache. On physical examination, there was significant tongue swelling on the left anterolateral area, fluctuant on palpation, and had erythematous border. After informed consent was taken the patient was transferred to the operation room with the diagnosis of tongue abscess. Subsequently, incision and drainage were done under general anesthesia, and about 30mL of thick pus was drained. The pocket was washed with normal saline and 2% hydrogen peroxide. The patient was transferred to the surgical ward with stable vital signs and had been on antibiotics. He was discharged after two days of hospital stay., Conclusion: Abscesses in the tongue are quite uncommon due to its rich vascular supply, lymphatic drainage, and saliva's immunologic advantage. Thorough diagnosis and successful treatment of tongue abscess prevent potential airway compromise. Antibiotic treatment should cover gram-positive and gram-negative anaerobes., Competing Interests: The authors declare that there are no conflicts of interest in this work., (© 2022 Mesfin et al.)
- Published
- 2022
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24. Measuring T-Cell Responses against SARS-CoV-2 Is of Utility for Disease and Vaccination Management.
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Safont G, Latorre I, Villar-Hernández R, Stojanovic Z, Marín A, Pérez-Cano C, Lacoma A, Molina-Moya B, Solis AJ, Arméstar F, Matllo J, Díaz-Fernández S, Cendón A, Sokalchuk L, Tolosa G, Casas I, Rosell A, and Domínguez J
- Abstract
The measurement of specific T-cell responses can be a useful tool for COVID-19 diagnostics and clinical management. In this study, we evaluated the IFN-γ T-cell response against the main SARS-CoV-2 antigens (spike, nucleocapsid and membrane) in acute and convalescent individuals classified according to severity, and in vaccinated and unvaccinated controls. IgG against spike and nucleocapsid were also measured. Spike antigen triggered the highest number of T-cell responses. Acute patients showed a low percentage of positive responses when compared to convalescent (71.6% vs. 91.7%, respectively), but increased during hospitalization and with severity. Some convalescent patients showed an IFN-γ T-cell response more than 200 days after diagnosis. Only half of the vaccinated individuals displayed an IFN-γ T-cell response after the second dose. IgG response was found in a higher percentage of individuals compared to IFN-γ T-cell responses, and moderate correlations between both responses were seen. However, in some acute COVID-19 patients specific T-cell response was detected, but not IgG production. We found that the chances of an IFN-γ T-cell response against SARS-CoV-2 is low during acute phase, but may increase over time, and that only half of the vaccinated individuals had an IFN-γ T-cell response after the second dose.
- Published
- 2022
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25. Hematological abnormalities in immunosuppressed patients with COVID-19: Evidence from a single center. A cross sectional study.
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Giacaman A, Henriquez W, Tolosa G, Prado A, Jerez R, Reveco Y, Martínez C, Baumert C, Rodríguez B, Sanhueza B, José Orellana J, and Inostroza J
- Subjects
- Blood Platelets, Cross-Sectional Studies, Humans, Lymphocytes, Neutrophils, Retrospective Studies, COVID-19
- Abstract
Background: Changes in hematological parameters in patients with COVID-19 are emerging as important features of the disease in the general population. In the present study we aimed to explore the hematological characteristics and its prevalence proportion ratio in patients with immunosuppression with COVID-19., Aim: To explore the differences between immunosuppressed and non-immunosuppressed patients, with and without COVID-19 from a hematological perspective., Methods: This cross-sectional study reports on the baseline complete blood count in patients attending the HHA Hospital, in Chile. The study reports descriptive characteristics of the population, including sex, age, ethnicity, corticoids and biological therapy scheme and a complete report of blood test results. A total of 476 patients were enrolled in this study from October of 2020 to April 2021., Results: Findings revels a significant increment (p value ≤ 0.001) on the median of total neutrophils and leucocytes, and in platelet-lymphocyte ratio (PLR), neutrophil- lymphocyte ratio (NLR) and monocyte-lymphocyte ratio (MLR) in immunosuppressed patients with COVID-19 (IS(+)) and immunocompetent patients with COVID-19 (IC(+)) compared with their respective controls. By contrast, a significant reduction on the median of lymphocytes, and eosinophiles was observed in IS(+) individuals compared with its controls. Also, the red blood cell count, hemoglobin, hematocrit, and mean corpuscular hemoglobin concentration were significantly reduced in IS(+) patients, whereas red blood cell, distribution width and mean corpuscular volume, were significantly higher in patients with COVID-19., Conclusion: Rapid blood tests, including, neutrophil, lymphocytes count and PLR, NLR can be used for early assessment and management of patients with immunosuppression., (Copyright © 2022 Elsevier B.V. All rights reserved.)
- Published
- 2022
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26. Study of CD27, CD38, HLA-DR and Ki-67 immune profiles for the characterization of active tuberculosis, latent infection and end of treatment.
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Díaz-Fernández S, Villar-Hernández R, Stojanovic Z, Fernández M, Galvão MLS, Tolosa G, Sánchez-Montalva A, Abad J, Jiménez-Fuentes MÁ, Safont G, Romero I, Sabrià J, Prat C, Domínguez J, and Latorre I
- Abstract
Background: Current blood-based diagnostic tools for TB are insufficient to properly characterize the distinct stages of TB, from the latent infection (LTBI) to its active form (aTB); nor can they assess treatment efficacy. Several immune cell biomarkers have been proposed as potential candidates for the development of improved diagnostic tools., Objective: To compare the capacity of CD27, HLA-DR, CD38 and Ki-67 markers to characterize LTBI, active TB and patients who ended treatment and resolved TB., Methods: Blood was collected from 45 patients defined according to clinical and microbiological criteria as: LTBI, aTB with less than 1 month of treatment and aTB after completing treatment. Peripheral blood mononuclear cells were stimulated with ESAT-6/CFP-10 or PPD antigens and acquired for flow cytometry after labelling with conjugated antibodies against CD3, CD4, CD8, CD27, IFN-γ, TNF-α, CD38, HLA-DR, and Ki-67. Conventional and multiparametric analyses were done with FlowJo and OMIQ, respectively., Results: The expression of CD27, CD38, HLA-DR and Ki-67 markers was analyzed in CD4
+ T-cells producing IFN-γ and/or TNF-α cytokines after ESAT-6/CFP-10 or PPD stimulation. Within antigen-responsive CD4+ T-cells, CD27- and CD38+ (ESAT-6/CFP-10-specific), and HLA-DR+ and Ki-67+ (PPD- and ESAT-6/CFP-10-specific) populations were significantly increased in aTB compared to LTBI. Ki-67 demonstrated the best discriminative performance as evaluated by ROC analyses (AUC > 0.9 after PPD stimulation). Data also points to a significant change in the expression of CD38 (ESAT-6/CFP-10-specific) and Ki-67 (PPD- and ESAT-6/CFP-10-specific) after ending the anti-TB treatment regimen. Furthermore, ratio based on the CD27 median fluorescence intensity in CD4+ T-cells over Mtb -specific CD4+ T-cells showed a positive association with aTB over LTBI (ESAT-6/CFP-10-specific). Additionally, multiparametric FlowSOM analyses revealed an increase in CD27 cell clusters and a decrease in HLA-DR cell clusters within Mtb -specific populations after the end of treatment., Conclusion: Our study independently confirms that CD27- , CD38+ , HLA-DR+ and Ki-67+ populations on Mtb -specific CD4+ T-cells are increased during active TB disease. Multiparametric analyses unbiasedly identify clusters based on CD27 or HLA-DR whose abundance can be related to treatment efficacy. Further studies are necessary to pinpoint the convergence between conventional and multiparametric approaches., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Díaz-Fernández, Villar-Hernández, Stojanovic, Fernández, Galvão, Tolosa, Sánchez-Montalva, Abad, Jiménez-Fuentes, Safont, Romero, Sabrià, Prat, Domínguez and Latorre.)- Published
- 2022
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27. Maresin-1 Prevents Liver Fibrosis by Targeting Nrf2 and NF-κB, Reducing Oxidative Stress and Inflammation.
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Rodríguez MJ, Sabaj M, Tolosa G, Herrera Vielma F, Zúñiga MJ, González DR, and Zúñiga-Hernández J
- Subjects
- Animals, Apoptosis drug effects, Body Weight drug effects, Cell Cycle drug effects, Cell Proliferation drug effects, Cytokines blood, Diethylnitrosamine, Docosahexaenoic Acids administration & dosage, Extracellular Matrix drug effects, Extracellular Matrix metabolism, Inflammation blood, Inflammation complications, Inflammation Mediators blood, Intercellular Signaling Peptides and Proteins metabolism, Liver drug effects, Liver injuries, Liver pathology, Liver Cirrhosis blood, Liver Cirrhosis complications, Male, Organ Size drug effects, Rats, Sprague-Dawley, Receptors, Cytoplasmic and Nuclear metabolism, Rats, Docosahexaenoic Acids pharmacology, Inflammation pathology, Liver Cirrhosis metabolism, Liver Cirrhosis prevention & control, NF-E2-Related Factor 2 metabolism, NF-kappa B metabolism, Oxidative Stress drug effects
- Abstract
Liver fibrosis is a complex process characterized by the excessive accumulation of extracellular matrix (ECM) and an alteration in liver architecture, as a result of most types of chronic liver diseases such as cirrhosis, hepatocellular carcinoma (HCC) and liver failure. Maresin-1 (MaR1) is derivative of ω-3 docosahexaenoic acid (DHA), which has been shown to have pro-resolutive and anti-inflammatory effects. We tested the hypothesis that the application of MaR1 could prevent the development of fibrosis in an animal model of chronic hepatic damage. Sprague-Dawley rats were induced with liver fibrosis by injections of diethylnitrosamine (DEN) and treated with or without MaR1 for four weeks. In the MaR1-treated animals, levels of AST and ALT were normalized in comparison with DEN alone, the hepatic architecture was improved, and inflammation and necrotic areas were reduced. Cell proliferation, assessed by the mitotic activity index and the expression of Ki-67, was increased in the MaR1-treated group. MaR1 attenuated liver fibrosis and oxidative stress was induced by DEN. Plasma levels of the pro-inflammatory mediators TNF-α and IL-1β were reduced in MaR1-treated animals, whereas the levels of IL-10, an anti-inflammatory cytokine, increased. Interestingly, MaR1 inhibited the translocation of the p65 subunit of NF-κB, while increasing the activation of Nrf2, a key regulator of the antioxidant response. Finally, MaR1 treatment reduced the levels of the pro-fibrotic mediator TGF-β and its receptor, while normalizing the hepatic levels of IGF-1, a proliferative agent. Taken together, these results suggest that MaR1 improves the parameters of DEN-induced liver fibrosis, activating hepatocyte proliferation and decreasing oxidative stress and inflammation. These results open the possibility of MaR1 as a potential therapeutic agent in fibrosis and other liver pathologies.
- Published
- 2021
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28. Plasma Levels of Myonectin But Not Myostatin or Fibroblast-Derived Growth Factor 21 Are Associated with Insulin Resistance in Adult Humans without Diabetes Mellitus.
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Toloza FJK, Mantilla-Rivas JO, Pérez-Matos MC, Ricardo-Silgado ML, Morales-Alvarez MC, Pinzón-Cortés JA, Pérez-Mayorga M, Arévalo-Garcia ML, Tolosa-González G, and Mendivil CO
- Abstract
Background: Myokines are a group of protein mediators produced by skeletal muscle under stress or physical exertion. Even though their discovery and effects in cell culture and animal models of disease have elicited great enthusiasm, very little is known about their role in human metabolism. We assessed whether plasma concentrations of three known myokines [myonectin, myostatin, and fibroblast-derived growth factor 21 (FGF-21)] would be associated with direct and indirect indicators of insulin resistance (IR) in individuals who did not have a diagnosis of diabetes., Methods: We studied 81 adults of both sexes comprising a wide range of body adiposity and insulin sensitivity. All participants underwent a thorough clinical assessment and a 5-point oral glucose tolerance test with calculation of multiple IR and insulin sensitivity indices. Twenty-one of them additionally underwent a hyperinsulinemic-euglycemic clamp with determination of steady-state whole-body insulin-stimulated glucose disposal ("M"). We compared plasma myokine concentrations across quartiles of IR indices and clinical IR surrogates, and explored the correlation of each myokine with the M -value., Results: Plasma myonectin levels increased monotonically across quartiles of the incremental area under the insulin curve (higher values indicate more IR) ( p -trend = 0.021) and decreased monotonically across quartiles of the insulin sensitivity index (ISI - higher values indicate less IR) ( p -trend = 0.012). After multivariate adjustment for other relevant determinants of IR (body mass index, age, and sex), the negative association of myonectin with ISI persisted (standardized beta = -0.235, p = 0.023). Myostatin was not associated with any clinical IR indicator or direct IR index measure. In multivariate analyses, FGF-21 showed a trend toward a positive correlation with glucose disposal that did not reach statistical significance (standardized beta = 0.476, p = 0.091)., Conclusion: The secretion of myonectin may constitute an attempt at a compensatory mechanism against IR in humans.
- Published
- 2018
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29. Comparison of plasma pigment epithelium-derived factor (PEDF), retinol binding protein 4 (RBP-4), chitinase-3-like protein 1 (YKL-40) and brain-derived neurotrophic factor (BDNF) for the identification of insulin resistance.
- Author
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Toloza FJK, Pérez-Matos MC, Ricardo-Silgado ML, Morales-Álvarez MC, Mantilla-Rivas JO, Pinzón-Cortés JA, Pérez-Mayorga M, Arévalo-García ML, Tolosa-González G, and Mendivil CO
- Subjects
- Adult, Aged, Female, Glucose Clamp Technique, Glucose Intolerance blood, Glucose Intolerance complications, Glucose Intolerance diagnosis, Glucose Tolerance Test, Humans, Male, Middle Aged, Obesity blood, Obesity complications, Obesity metabolism, Prediabetic State blood, Prediabetic State complications, Prediabetic State diagnosis, Retinol-Binding Proteins, Plasma metabolism, Biomarkers blood, Brain-Derived Neurotrophic Factor blood, Chitinase-3-Like Protein 1 blood, Diagnostic Techniques, Endocrine, Eye Proteins blood, Insulin Resistance, Nerve Growth Factors blood, Retinol-Binding Proteins, Plasma analysis, Serpins blood
- Abstract
Aims: To evaluate and compare the association of four potential insulin resistance (IR) biomarkers (pigment-epithelium-derived factor [PEDF], retinol-binding-protein-4 [RBP-4], chitinase-3-like protein 1 [YKL-40] and brain-derived neurotrophic factor [BDNF]) with objective measures of IR., Methods: We studied 81 subjects with different metabolic profiles. All participants underwent a 5-point OGTT with calculation of multiple IR indexes. A subgroup of 21 participants additionally underwent a hyperinsulinemic-euglycemic clamp. IR was defined as belonging to the highest quartile of incremental area under the insulin curve (iAUCins), or to the lowest quartile of the insulin sensitivity index (ISI)., Results: PEDF was associated with adiposity variables. PEDF and RBP4 increased linearly across quartiles of iAUCins (for PEDF p-trend=0.029; for RBP-4 p-trend=0.053). YKL-40 and BDNF were not associated with any adiposity or IR variable. PEDF and RBP-4 levels identified individuals with IR by the iAUCins definition: A PEDF cutoff of 11.9ng/mL had 60% sensitivity and 68% specificity, while a RBP-4 cutoff of 71.6ng/mL had 70% sensitivity and 57% specificity. In multiple regression analyses simultaneously including clinical variables and the studied biomarkers, only BMI, PEDF and RBP-4 remained significant predictors of IR., Conclusions: Plasma PEDF and RBP4 identified IR in subjects with no prior diagnosis of diabetes., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2017
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30. [Septal alcohol ablation in patients with hypertrophic cardiomyopathy].
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López-Aburto G, Palacios-Rodríguez JM, Cantú-Ramírez S, Galván-García E, Tolosa-Dzul G, Morán-Benavente A, and Ontiveros-Martínez R
- Subjects
- Ablation Techniques, Female, Humans, Longitudinal Studies, Male, Middle Aged, Retrospective Studies, Cardiomyopathy, Hypertrophic therapy, Ethanol therapeutic use
- Abstract
Objective: to know the clinical and hemodynamic course in septal obstructive hypertrophic cardiomyopathy (SOHC) after alcohol ablation., Methods: this was an observational, longitudinal study, including 21 patients with SOHC with functional class of the New York Heart Association (CF-NYHA) refractory to treatment and/or = 30 mm Hg gradient at rest or = 60 mm Hg provoked, or have systolic anterior motion or mitral incompetence (MI) > grade II by echocardiography., Results: average age was 50 ± 16 years, males 38.1 %, females 61.9 %; symptoms: angina 42.9 %, dyspnea 85.7 %, syncope 23.8 %. Pre-ablation CF-NYHA was III and IV in 61.9 %; after a year follow-up all of them were class I-II. Pre-ablation, after and one year later, interventricle septum measures were 22.7 ± 4.9 and 20.7 ± 3.1 mm; left ventricular ejection fraction was 65.5 ± 7 %, 62.2 % ± 6.5 % and 68.7 ± 6.2 %; the output gradient of the left ventricle were 106.9 ± 29.9, 44.6 ± 24.3 and 22.0 ± 5.7 mm Hg. Pre-ablation MI grade-III and IV were 33.3 % and 47.6 %; after a year it was grade-0, 52.4 %, grade-I 28.6 %, grade-II, 19 %. There were no hospital mortality., Conclusions: the alcohol septal ablation in SOHC patients had a high success treatment with a low complication rate.
- Published
- 2013
31. [Systematic determination of diabetic microangiopathy combined with therapeutic education].
- Author
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Wilhelm JM, Weigel C, Tolosa G, Demure A, Demark S, Faller M, Haennig A, Lichtlé AL, and Muller R
- Subjects
- Blood Glucose Self-Monitoring, Diabetic Angiopathies prevention & control, Diabetic Nephropathies prevention & control, Diet, Diabetic, Humans, Diabetic Angiopathies diagnosis, Diabetic Angiopathies rehabilitation, Patient Education as Topic
- Published
- 2008
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