Evolução pós-tratamento de pacientes infectados por duas espécies de Leishmania do subgênero Viannia / Post-treatment evolution of patients infected by Leishmania species of subgenus Viannia: L. braziliensis and L. naiffi
The main strategy to control American tegumentary leishmaniasis (ATL) isimmunoprophylaxis. To date, no vaccine is available to control spread of the disease. [...] Thus, the purpose of this thesis was to evaluate the evolution of posttreatmentcases of infection with Leishmania naiffi (Ln) and L. braziliensis (Lb) under twodifferent aspects 1) describe a series of cases of ATL caused by Ln selected from thirtycutaneous leishmaniasis (CL) patients attend at the FMT-HVD, Manaus, in the period 2011-2013. 2) Evaluating the immunological signature, in terms of immunoglobulin subclasses anddifferentiation profile and memory is similar between patients Lb with 26 years of healing aftertreatment with two different treatment regimens with antimony. We studied 43 patients curedcutaneous leishmaniasis (CCL), which are divided into groups CCL patients followed from theactive phase to three years (y) after cure of Lb infection (n= 23, CCL<3y), CCL patients healedwith up 26 years after infection by Lb (n= 12, CCL 12-26y). In addition, 30 isolates ofLeishmania of patients with cutaneous leishmaniasis (CL) from FMT-HVD were evaluated.Peripheral blood mononuclear cells (PBMC) were analyzed after in vitro stimulation withantigen Lb. The phenotyping of T lymphocyte subpopulations was performed by flow cytometryfor the activation, immunological memory and immunosenescence. The production of IgG andits subclasses anti-Lb were evaluated by ELISA. Isolates of Leishmania were characterized as tospecies by isozymetechnique.