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Título : Therapy of Venezuelan Patients with Severe Mucocutaneous or Early Lesions of Diffuse Cutaneous Leishmaniasis with a Vaccine Containing Pasteurized Leishmania Promastigotes and Bacillus Calmette-Guerin - Preliminary Report
Autor : Convit, Jacinto
Ulrich, Marian
Polegre, María Argelia
Avila, Angela
Rodríguez, Noris
Mazzedo, Maria Ilina
Blanco, Belkis
Palabras clave : immunotherapy
diffuse cutaneous leishmaniasis
mucocutaneous leishmaniasis
Fecha de publicación : Feb-2004
Editorial : Mem Inst Oswaldo Cruz, Rio de Janeiro
Citación : Vol.99;1
Resumen : Severe mucocutaneous (MCL) and diffuse (DCL) forms of American cutaneous leishmaniasis (ACL) are infrequent in Venezuela. Chemotherapy produces only transitory remission in DCL, and occasional treatment failures are observed in MCL. We have evaluated therapy with an experimental vaccine in patients with severe leishmaniasis. Four patients with MCL and 3 with early DCL were treated with monthly intradermal injections of a vaccine containing promastigotes of Leishmania (Viannia) braziliensis killed by pasteurization and viable Bacillus Calmette- Guerin. Clinical and immunological responses were evaluated. Integrity of protein constituents in extracts of pasteurized promastigotes was evaluated by gel electrophoresis. Complete remission of lesions occurred after 5-9 injections in patients with MCL or 7-10 injections in patients with early DCL. DCL patients developed positive leishmanin skin reactions, average size 18.7 mm. All have been free of active lesions for at least 10 months. Adverse effects of the vaccine were limited to local reactivity to BCG at the injection sites and fever in 2 patients. Extracts of pasteurized and fresh promastigotes did not reveal differences in the integrity of protein components detectable by gel electrophoresis. Immunotherapy with this modified vaccine offers an effective, safe option for the treatment of patients who do not respond to immunotherapy with vaccine containing autoclaved parasites or to chemotherapy
URI : http://saber.ucv.ve/jspui/handle/123456789/12698
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