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Abstract
The hepatoprotective activity of Picroliv, a standardized iridoid glycoside fraction of Picrorhiza kurroa, has been investigated by studying the protection of biochemical and histological changes induced in livers of rats given single oral doses (7 mg/kg) of aflatoxin B1. Administration of aflatoxin B1 resulted in a significant increase in 5′-nucleotidase, r-glutamyl transpeptidase, acid ribonuclease, total lipids, cholesterol and lipid peroxides in liver and transaminases, alkaline phosphatase and billrubin in serum. However, the activity of glucose 6-phosphatase and levels of cytochrome P450, cytochrome b5, DNA, RNA, proteins and glycogen in liver and total proteins in serum decreased. The liver histology showed ballooned hepatocytes, degeneration, microvesicular fat, focal necrosis, bile duct hyperplasia and proliferation of oval and spindle cells in portal tracts. When Picroliv (25 mg/kg×7 days) was given to aflatoxin B1 toxicated rats, the majority of the biochemical and histological changes were significantly protected. The findings indicate a hepatoprotective activity of Picroliv against aflatoxin B1 toxicity in rats.
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