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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/8386
Tipo: Artigo de Periódico
Título: Variation of cytokine patterns related to therapeutic response in diffuse cutaneous leishmaniasis
Título(s) alternativo(s): Experimental Parasitology
Autor(es): Bomfim, Glória
Nascimento, Cristiane Santos
Costa, Jackson
Carvalho Filho, Edgar Marcelino de
Barral-Netto, Manoel
Barral, Aldina Maria Prado
Autor(es): Bomfim, Glória
Nascimento, Cristiane Santos
Costa, Jackson
Carvalho Filho, Edgar Marcelino de
Barral-Netto, Manoel
Barral, Aldina Maria Prado
Abstract: Diffuse cutaneous leishmaniasis is a rare entity characterized by disseminated cutaneous nodules associated with specific anergy to leishmanial antigens. A low but not absent IFN-γ expression by cells present in cutaneous lesions has been documented during the active phase of diffuse cutaneous leishmaniasis. In this study we confirm this observation, and extend it by showing a similar pattern in peripheral blood mononuclear cells and the variation of mRNA cytokine expression pattern during different stages of the disease. During active disease, patients did not express mRNA for IFN-γ, while expressing mRNA for IL-2, IL-4, and IL-10. In contrast, an expression of IFN-γ and low IL-10 was observed after treatment-induced transient healing of cutaneous lesions. In three patients we have been able to analyze a third PBMC sample obtained after clinical relapse, documenting in all of them decreased IFN-γ expression with no expression of IL-10. Although there was an association between the appearance of IFN-γ expression and clinical improvement, with marked expression of IFN-γ mRNA and decreased expression of mRNA for IL-10 after treatment, this was not sufficient to prevent relapse in these patients. Therefore, it is possible that factors other than the cytokines characteristic of the Th1 and Th2 balance are implicated in the inability of diffuse cutaneous leishmaniasis patients to mount an anti-Leishmaniaimmune response causing clinical improvement.
Palavras-chave: leishmaniasis
cytokines
therapy
cutaneous leishmaniasis
DCL
diffuse cutaneous leishmaniasis
IFN-γ
interferon-gamma
IL
interleukin
PBMC
peripheral blood mononuclear cells
DEPC
PCR
diethylpyrocarbonate
polymerase chain reaction
URI: http://www.repositorio.ufba.br/ri/handle/ri/8386
Data do documento: 1996
Aparece nas coleções:Artigo Publicado em Periódico (Faculdade de Medicina)

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