| Autor: |
Oliveira, Carolina Ferreira, Manzoni-de-Almeida, Daniel, Seixas Mello, Paula, Cotta Natale, Caio, Costa Santiago, Helton da, Da SilvaMiranda, Luíza, Oliveira Ferraz, Fernanda, Martins dos Santos, Liliane, Martins Teixeira, Mauro, Esteves Arantes, Rosa Maria, Quercia Vieira, Leda |
| Předmět: |
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| Zdroj: |
Clinical & Developmental Immunology; 2012, p1-12, 12p, 1 Color Photograph, 3 Charts, 4 Graphs |
| Abstrakt: |
Leishmania major-infected TNF receptor 1 deficient (TNFR1 KO) mice resolve parasitism but fail to resolve lesions, while wildtype mice completely heal. We investigated the cell composition, cytokine production, and apoptosis in lesions from L. majorinfected TNFR1 KO and wild-type (WT) mice. Chronic lesions from L. major-infected TNFR1 KO mice presented larger number of CD8+ T and Ly6G+ cells. In addition, higher concentrations of mRNA for IFN-γ CCL2 and CCL5, as well as protein, but lower numbers of apoptotic cells, were found in lesions from TNFR1 KO mice than in WT, at late time points of infection. Our studies showed that persistent lesions in L. major-infected TNFR1 KO mice may be mediated by continuous migration of cells to the site of inflammation due to the presence of chemokines and also by lower levels of apoptosis. We suggest that this model has some striking similarities to the mucocutaneous clinical form of leishmaniasis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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