Avaliação do tratamento da cromoblastomicose experimental utilizando vacina de DNA (DNA-hsp65)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

Chromoblastomycosis (CBM) is a chronic worldwide subcutaneous mycosis, caused by several dimorphic, pigmented dematiaceous fungi. Patients with the disease are still considered as therapeutic challenge, mainly due to its recalcitrant nature. There is no treatment of choice for this neglected mycosis, but rather several treatment options. Itraconazole and terbinafine showed the best results in treating the disease, although the healing of severe cases is still uncommon. However, several studies have reported the DNA vaccine as promising in the treatment of fungal infections, which allow the host to restore depressed cellular immunity, minimizing the toxic effects from conventional antifungal therapies. In this matter, this work was conducted aiming the establishment of a suitable model for experimental CBM, suggesting also new therapies, including DNA-hsp65 vaccine. By analyzing the morfometrical and histopathological aspects, also the recovery/quantification of colony forming units, the results showed the establishment of a chronic, although transitory, experimental CBM model with lesions similar to that presented in humans. The treatment regimen using itraconazole and amphotericin B, intralesionally, was effective in treating experimental CBM, as well as therapy using naked DNA-hsp65 vaccine. It also has been shown that chemotherapy associated with DNA-hsp65 vaccine is efficient in the treatment of experimental CBM, accelerating the healing process of the disease, becoming able to tone down the toxic effects from prolonged chemotherapy.

ASSUNTO(S)

modelo experimental imunologia aplicada cromoblastomicose amphotericin b itraconazol anfotericina b dna-hsp65 itraconazole dna vaccine dna-hsp65 experimental model vacina de dna chromoblastomycosis

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