Altered Liver Morphology and Enzymes in Streptozotocin Induced Diabetic Rats

Este estudio se realizo para evaluar la relacion y los efectos de la diabetes sobre la morfologia, arquitectura y la funcion del higado. Los efectos hepaticos de la diabetes se evaluaron in vivo utilizando estreptozotocina (STZ) para inducir diabetes en ratas como un modelo experimental. El grado de disfuncion hepatica se midio mediante el uso de parametros bioquimicos, como las transaminasas sericas (ALT y AST), fosfatasa alcalina (ALP) y pseudocolinesterasa (PChE), mientras que los estudios histopatologicos se llevaron a cabo para apoyar los parametros enzimaticos. El objetivo del estudio fue investigar la asociacion entre las complicaciones hepaticas diabeticas y la alteracion de enzimas hepaticas. Este estudio se realizo en el Departamento de Anatomia, Instituto de Ciencias Farmaceuticas y el Instituto de Diabetologia y Endocrinologia de la Baqai Medical University, Karachi. La diabetes fue inducida por una dosis unica de STZ (45 mg/kg de peso corporal) administrada por via intraperitoneal en tampon citrato de sodio a pH 4,5. Ochenta ratas albinas se dividieron en cinco grupos: control (A) y tratados con STZ (B, C, D y E), las que se sacrificaron a las 2, 4, 6 y 8 semanas despues del tratamiento. El examen histopatologico de higado mostro acumulacion de gotitas de lipidos, infiltracion linfocitica, aumento del contenido de fibras, dilatacion y congestion de los vasos portales, y la proliferacion de conductos biliares. Aumento de los niveles de aspartato aminotransferasa (AST), alanina aminotransferasa (ALT), ALP y PChE fueron observados en el higado. Parece que las complicaciones de la diabetes en el higado como la destruccion de los hepatocitos etc., son probablemente debido a alteraciones en los niveles de las enzimas.

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