Leishmania infection and neuroinflammation: Specific chemokine profile and absence of parasites in the brain of naturally-infected dogs
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Data
2015-12-15
Autores
Melo, Guilherme D. [UNESP]
Silva, José Eduardo S. [UNESP]
Grano, Fernanda G. [UNESP]
Souza, Milena S. [UNESP]
Machado, Gisele F. [UNESP]
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Resumo
Visceral leishmaniasis is a chronic disease caused by Leishmania infantum. We aimed to detect the parasite in the brain of fifteen naturally-infected dogs using in situ hybridization and immunohistochemistry, and the gene expression of selected chemokines by RT-qPCR. We detected no parasite in the brain, but perivascular deposition of parasite DNA and IgG in the choroid plexus. We noticed up-regulation of CCL-3, CCL-4 and CCL-5, coherent with T lymphocyte accumulation, stating the brain as a pro-inflammatory environment. Indeed, not necessarily the parasite itself, but rather its DNA seems to act as a trigger to promote brain inflammation during visceral leishmaniasis.
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Central nervous system, Chemokine CCL3, Chemokine CCL4, Chemokine CCL5, T lymphocytes, Visceral leishmaniasis
Como citar
Journal of Neuroimmunology, v. 289, p. 21-29.