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Title: Immunohistochemical evidence of stress and inflammatory markers in mouse models of cutaneous leishmaniosis
Author: Araujo, Alexandra Paiva; Giorgio, Selma
Year: 2015
Is part of: Archives of Dermatological Research (Print), v. 01, p. 21 - 32

Citation: Araujo, Alexandra Paiva; Giorgio, Selma; Immunohistochemical evidence of stress and inflammatory markers in mouse models of cutaneous leishmaniosis. Archives of Dermatological Research (Print), v.01, p. 21-32, 2015

Abstract: Leishmanioses are chronic parasitic diseases and host responses are associated with pro- or anti-inflammatory cytokines involved, respectively, in the control or exacerbation of infection. The relevance of other inflammatory mediators and stress markers has not been widely studied and there is a need to search for biomarkers to leishmaniasis. In this work, the stress and inflammatory molecules p38 mitogen-activated protein kinase, cyclooxygenase-2, migration inhibitory factor, macrophage inflammatory protein 2, heat shock protein 70 kDa, vascular endothelial factor (VEGF), hypoxia-inducible factors (HIF-1 alpha and HIF-2 alpha), heme oxygenase and galectin-3 expression were assessed immunohistochemically in self-controlled lesions in C57BL/6 mice and severe lesions in Balb/c mice infected with Leishmania amazonensis. The results indicated that the majority of molecules were expressed in the cutaneous lesions of both C57BL/6 and Balb/c mice during various phases of infection, suggesting no obvious correlation between the stress and inflammatory molecule expression and the control/exacerbation of leishmanial lesions. However, the cytokine VEGF was only detected in C57BL/6 footpad lesions and small lesions in Balb/c mice treated with antimonial pentavalent. These findings suggest that VEGF expression could be a predictive factor for murine leishmanial control, a hypothesis that should be tested in human leishmaniosis.

Funding: This study was supported by Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior.
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