Dual immune modulatory effect of vitamin A in Human visceral leishmaniasis

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dc.contributor.authorMaciel, Bruna Leal Lima
dc.contributor.authorValverde, Joanna Gardel
dc.contributor.authorRodrigues Neto, João Firmino
dc.contributor.authorKeesen, Tatjana Souza Lima
dc.contributor.authorJerônimo, Selma Maria Bezerra
dc.date.accessioned2024-02-27T19:58:22Z
dc.date.available2024-02-27T19:58:22Z
dc.date.issued2014-09
dc.description.resumoVitamin A supplementation has shown to prevent mortality by diarrheal and respiratory diseases in several countries. Nevertheless, there are few studies investigating the effect of vitamin A in visceral leishmaniasis (VL), although there are reports of its deficiency in children with symptomatic VL in Brazil and Bangladesh. This study analyzed the effect of vitamin A on a subset of Treg cells and monocytes isolated from symptomatic VL and from healthy children residing in an endemic area for VL in Northeast Brazil. Serum retinol concentrations correlated inversely with IL-10 and TGF-b productions in CD4+ CD25highFoxp3+ T cells isolated from children with VL stimulated with leishmanial antigens. All-trans retinoic acid in vitro induced IL-10 in CD4+ CD25highFoxp3+ T cells; IL-10 and TGF-b production in CD4+ CD252Foxp32 T cells, and IL-10 in monocytes isolated from healthy children. However, the use of all-trans retinoic acid together with leishmanial antigens in vitro prevented increases in IL-10 production in Treg cells and monocytes isolated from VL children. Strikingly, those results show a potential dual role of vitamin A in the immune system: improvement of a regulatory profile in cells from healthy children after leishmanial stimulation and down modulation of IL-10 in Treg cells and monocytes during symptomatic VL. Therefore, the use of vitamin A concomitant to VL therapy might be useful in improving recovery from disease status caused by Leishmania infantum infection and warrants additional studypt_BR
dc.identifier.citationMACIEL, Bruna Leal Lima; VALVERDE, Joanna Gardel; RODRIGUES NETO, João Firmino; FREIRE NETO, Francisco; KEESEN, Tatjana Souza Lima; JERÔNIMO, Selma Maria Bezerra. Dual immune modulatory effect of vitamin A in Human visceral leishmaniasis. Plos One, [S.l.], v. 9, n. 9, p. 1-11, 30 set. 2014. DOI: 10.1371/journal.pone.0107564. Disponível em: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0107564. Acesso em: 05 fev. 2024.pt_BR
dc.identifier.doihttp://dx.doi.org/10.1371/journal.pone.0107564
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/57697
dc.languageenpt_BR
dc.publisherPlos Onept_BR
dc.rightsAttribution 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/br/*
dc.subjectDual Immunept_BR
dc.subjectVitamin Apt_BR
dc.subjectHuman Visceral Leishmaniasispt_BR
dc.titleDual immune modulatory effect of vitamin A in Human visceral leishmaniasispt_BR
dc.typearticlept_BR

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