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Schistosoma mansoni Infection in Holochilus sciureus Shows Sex-Related Differences in Parasitological Patterns

Open Journal of Animal Sciences 2019年第2期9卷 173-182页

作者： Guilherme Silva Miranda Joao Gustavo Mendes Rodrigues maria gabriela sampaio lira Ranielly Araujo Nogueira Gleycka Cristine Carvalho Gomes Neuton Silva-Souza Department of Parasitology Institute of Biological SciencesFederal University of Minas GeraisBelo HorizonteBrazil Teaching Department Federal Institute of MaranhaoSao Raimundo das MangabeirasBrazil Department of Pathology Centre for Biological and Health SciencesFederal University of MaranhaoSao LuisBrazil Department of Chemistry and Biology Laboratory of Human ParasitologyState University of MaranhaoSao LuisBrazil

Due to the different parasitological patterns found between sexes in human populations and in different biological models during Schistosoma mansoni infection, we proposed to investigate such differences using Holochilus sciureus rodent, besides confirming whether this rodent is suitable for experimental infections. In this sense, males and females of H. sciureus were infected with 200 cercariae from a human strain of S. mansoni. The number of eggs per gram of feces (epg) and the worms were quantified, besides histopathological analysis. Thus, it was shown that females have fewer epg, as well as a longer prepatent period. On the other hand, males had a lower recovery rate of adult worms. The histopathological analysis did not show differences between the sexes. Thus, we suggest that infection in H. sciureus females provides a favorable environment for the development of adult worms, despite impairing the parasite fecundity. In addition, H. sciureus may be an excellent biological model for S. mansoni experimental infections.

关键词： Biological Model Females Males Schistosomiasis Wild Reservoir

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The domestication of Cucurbita argyrosperma as revealed by the genome of its wild relative

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Horticulture Research 2021年第1期8卷 1287-1300页

作者： Josue Barrera-Redondo Guillermo Sanchez-de la Vega Jonas A.Aguirre-Liguori gabriela Castellanos-Morales Yocelyn T.Gutierrez-Guerrero Xitlali Aguirre-Dugua Erika Aguirre-Planter Maud I.Tenaillon Rafael lira-Saade Luis E.Eguiarte Departamento de Ecologia Evolutiva Instituto de EcologiaUniversidad Nacional Autonoma de MexicoCircuito Exterior s/n Anexo al Jardin Botanico04510 Ciudad de MexicoMexico Department of Ecology and Evolutionary Biology University of CaliforniaIrvineCA 92697USA Departamento de Conservacion de la Biodiversidad El Colegio de la Frontera SurVillahermosaCarretera Villahermosa‐Reforma km 15.5 Rancheria El Guineo 2ªseccion86280 VillahermosaTabascoMexico Genetique Quantitative et Evolution-Le Moulon Universite Paris-SaclayInstitut National de Recherche pour l’Agriculturel’Alimentation et l’EnvironnementCentre National de la Recherche ScientifiqueAgroParisTechGif-sur-Yvette 91190France UBIPRO Facultad de Estudios Superiores IztacalaUniversidad Nacional Autonoma de MexicoAv.de los Barrios#1Col.Los Reyes IztacalaTlalnepantlaEdo.de Mex 54090Mexico

Despite their economic importance and well-characterized domestication syndrome,the genomic impact of domestication and the identification of variants underlying the domestication traits in Cucurbita species(pumpkins and squashes)is currently *** argyrosperma,also known as cushaw pumpkin or silver-seed gourd,is a Mexican crop consumed primarily for its seeds rather than fruit *** makes it a good model to study Cucurbita domestication,as seeds were an essential component of early Mesoamerican diet and likely the first targets of human-guided selection in pumpkins and *** obtained population-level data using tunable Genotype by Sequencing libraries for 192 individuals of the wild and domesticated subspecies of *** across *** also assembled the first high-quality wild Cucurbita *** genomic analyses revealed several structural variants and presence/absence of genes related to *** results indicate a monophyletic origin of this domesticated crop in the lowlands of *** found evidence of gene flow between the domesticated and wild subspecies,which likely alleviated the effects of the domestication *** uncovered candidate domestication genes that are involved in the regulation of growth hormones,plant defense mechanisms,seed development,and *** presence of shared selected alleles with the closely related species Cucurbita moschata suggests domestication-related introgression between both taxa.

关键词： Cucurbita likely pump

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Correlation between the Six-Minute Walk Test and Subjective Functional Class in Patients with Heart Failure

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World Journal of Cardiovascular Diseases 2023年第4期13卷 205-213页

作者： Davi Muzi Rios gabriela lira Devens Leticia Admiral Louzada Priscila Cabral Gomes Coelho Lima Rodolfo Costa Sylvestre Vinicius Angelo Astolpho Lucas Crespo de Barros Larissa Novaes Paganini Lucas Martins Frizzera Borges Renato Giestas Serpa Osmar Araujo Calil Luiz Fernando Machado Barbosa Roberto Ramos Barbosa Department of Cardiology Santa Casa de Misericórdia de Vitória Hospital Vitória Brazil School of Medicine Santa Casa de Misericórdia Vitória Brazil

Introduction: The Six-Minute Walk Test (6MWT) is an inexpensive method to objectively evaluate physical capacity or limitation and stratify prognosis in patients with Heart Failure (HF). Since the clinical perception of symptoms may be adapted or compromised, regular evaluation from medical interviews often fails to determine functional classification. This study aimed to assess the correlation between New York Heart Association Functional Class (NYHA-FC) and the distance walked in the 6MWT. Methods: We conducted a cross-sectional observational study that included patients with HF with reduced ejection fraction followed up at an outpatient service of a teaching hospital, from August 2018 to April 2019. Patients in NYHA-FC I, II, or III were included. We compared NYHA-FC subjectively obtained during the consultation with the 6MWT performed after medical consultation, and the correlation between these two parameters was assessed. Results: The study included 70 patients with HF, 41 (58.6%) of whom were female. The mean age was 61.2 ± 12.7 years. The most prevalent etiologies were dilated idiopathic cardiomyopathy (35.7%) followed by ischemic cardiomyopathy (25.7%). The mean ejection fraction was 34.1% ± 9.8%. The average distance walked in the 6MWT by NYHA-FC I patients was 437.8 ± 95.8 meters, NYHA-FC II 360.1 ± 96.4, and NYHA-FC III 248.4 ± 98.3. Functional class measured by the 6MWT was different than that estimated by NYHA-FC in 34 patients (48.6%), 23 (32.9%) for a higher functional class and 11 (15.7%) for a lower one (p = 0.07). Pearson’s correlation coefficient between NYHA-FC and the 6MWT was -0.55. Conclusion: There was a moderate correlation between the subjective NYHA-FC and the 6MWT. The 6MWT revealed a different classification from NYHA-FC in almost half of the patients. Among those who presented discrepancies between methods, 6MWT reclassification towards a higher functional class was more common.

关键词： Heart Failure Six-Minute Walk Test Functional Class

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