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| Silva,J.S.; Aliberti,J.C.S.; Martins,G.A.; Souza,M.A.; Souto,J.T.; Pádua,M.A.. |
| Host resistance to Trypanosoma cruzi infection is dependent on both natural and acquired immune responses. During the early acute phase of infection in mice, natural killer (NK) cell-derived IFN-<FONT FACE="Symbol">g</font> is involved in controlling intracellular parasite replication, mainly through the induction of nitric oxide biosynthesis by activated macrophages. We have shown that IL-12, a powerful inducer of IFN-<FONT FACE="Symbol">g</font> production by NK cells, is synthesized soon after trypomastigote-macrophage interaction. The role of IL-12 in the control of T. cruzi infection in vivo was determined by treating infected mice with anti-IL-12 monoclonal antibody (mAb) and analyzing both parasitemia and mortality during the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: IL-12 Trypanosoma cruzi NK cells IFN-<; FONT FACE=Symbol>; G<; /font>; Nitric oxide. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100014 |
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| Gazzinelli,R.T.; Talvani,A.; Camargo,M.M.; Santiago,H.C.; Oliveira,M.A.P.; Vieira,L.Q.; Martins,G.A.; Aliberti,J.C.S.; Silva,J.S.. |
| Toxoplasma gondii and Trypanosoma cruzi are intracellular parasites which, as part of their life cycle, induce a potent cell-mediated immunity (CMI) maintained by Th1 lymphocytes and IFN-<FONT FACE="Symbol">g</font>. In both cases, induction of a strong CMI is thought to protect the host against rapid parasite multiplication and consequent pathology and lethality during the acute phase of infection. However, the parasitic infection is not eliminated by the immune system and the vertebrate host serves as a parasite reservoir. In contrast, Leishmania sp, which is a slow growing parasite, appears to evade induction of CMI during early stages of infection as a strategy for surviving in a hostile environment (i.e., inside the macrophages which are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leishmania; Toxoplasma gondii; Trypanosoma cruzi; Macrophages; Cytokines; Nitric oxide. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100012 |
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