Cellular immune response of patients with chromoblastomycosis undergoing antifungal therapy

One of the most characteristic features of the chromoblastomycosis is its unresponsiveness to treatment. In order to analyzed whether during therapy could be observed a change of cellular immune response pattern, we evaluated the production of IL-10, TNF-α and IFN-γ, as well as proliferation of peripheral blood mononuclear cell (PBMC) from patients in different periods of chemotherapy treatment. Our results showed that after 6 months of treatment cells from patients proliferated to fungal antigens and produced a significant level of IFN-γ. However, after 1 year of treatment a low proliferation of T cells and production of IFN-γ accompanied by an increase of IL-10 were observed when compared with 6 months of treatment.