Citar como: Antitupa I, Quispe W, Mayo J, Valverde F, Sanchez E. Purificación de la fracción antigénica 27-28 KDa a partir del antígeno metabólico secretadoexcretado de Fasciola hepatica. Rev Peru Med Exp Salud Publica. 2014;31(2) RESUMENEn el presente estudio, las fracciones antigénicas de 27-28 KDa de Fasciola hepatica fueron purificadas por cromatografía de exclusión molecular para su aplicación en el diagnóstico de la fascioliasis humana. Se obtuvieron antígenos de excreción y secreción a partir de fasciolas adultas vivas obtenida de hígado de ovino y bovino, y cultivados en medio mínimo esencial. La reactividad y eficacia del antígeno purificado fueron evaluadas por la prueba de inmunoblot empleando cuatro sueros con fascioliasis humana; cuatro sueros con otras parasitosis, y dos sueros negativos. Se concluye que las fracciones antigénicas purificadas no presentan reacción cruzada con otras parasitosis, por inmunoblot, por lo que se considera a las proteínas purificadas como potenciales candidatas a ser utilizadas para el diagnóstico de fascioliasis humana.Palabras clave: Fasciola hepatica; Purificación; Cromatografía (fuente: DeCS BIREME). PURIFICATION OF ANTIGENIC FRACTION 27-28 kDa from the metabolic ANTIGEN FROM METABOLIC secreted-excreted from Fasciola hepatica ABSTRACTAntigenic fractions of 27-28 kDa from Fasciola hepatica were purified by size-exclusion chromatography for use in the diagnosis of human fasciolosis. Excretion and secretion antigens were obtained from living adult flukes collected from sheep and cattle liver, and cultured in minimum essential medium. The reactivity of the purified antigen and efficacy were assessed by immunoblot test using four sera with human fascioliasis; four sera with other parasites, and two negative sera. We conclude that the purified antigenic fractions do not cross-react with other parasites by immunoblot. Therefore, purified proteins are considered as potential candidates to be used for the diagnosis of human fascioliasis.
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