Article
Cytokines and NO in American tegumentary leishmaniasis patients: profiles in active disease, after therapy and in self-healed individuals
Registro en:
SOUZA, M. de Assis et al. Cytokines and NO in American tegumentary leishmaniasis patients: profiles in active disease, after therapy and in self-healed individuals. Microbial Pathogenesis, v. 57, p. 27–32, abr. 2013.
1096-1208
10.1016/j.micpath.2013.02.004
Autor
Souza, Marina de Assis
Castro, Maria C. A. Brelaz de
Oliveira, Andresa Pereira de
Almeida, Amanda Ferreira de
Almeida, Thays Miranda de
Reis, Luiza C.
Medeiros, Ângela Cristina Rapela
Brito, Maria Edileuza Felinto de
Pereira, Valéria Rêgo Alves
Resumen
Studies suggest the influence of immune response on the successful treatment of American tegumentary leishmaniasis (ATL), and indicate the existence of protective immunity in self-healed patients. Thus, the aim of this work was to quantify interferon-gamma (IFN-γ), tumor necrosis factor-alpha (TNF-α), interleukin (IL-) 10, IL-17, IL-22 and nitric oxide (NO) in culture supernatants of PBMC from patients with active disease (AD), after treatment (AT), and from self-healed (SH) and healthy subjects (CT), in response to Leishmania (Viannia) braziliensis insoluble antigen (AgIns). All groups of patients produced IFN-γ, indicating a predominant proinflammatory profile. AD and AT patients presented TNF-α levels, with a slight increase after therapy, whereas it was weakly quantified in SH. Interestingly, NO secretion was significant in these individuals, whereas IL-17 appeared in low levels and seems to be regulated by NO. Although IL-22 was detected in AD, its role is still questionable. The presence of IL-10 in all groups of patients suggests that the cytokine plays distinct roles in the disease. These results indicate that specific cellular immunity takes part against Leishmania, but with some similarities between the different clinical states herein described; these mediators seem to be necessary for the cure to occur.
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