Our aim was to investigate hepatoprotective effect of A. persicus and A. tournefortii
extracts in a rat model of paracetamol (PCM) induced liver damage. PCM induced severe
hepatic damage in rats as evidenced by elevated serum activities of aspartate aminotransferase
(AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), γ-glutamyl transferase
(γ-GT) and serum level of total bilirubin (BIL). In liver homogenates, PCM elevated
malondialdehyde (MDA) but decreased glutathione (GSH) level as well as glutathione
peroxidase (GPx), superoxide dismutase (SOD) and catalase (CAT) activities. Administration
of A. persicus and A. tournefortii extracts for 7 days before PCM inhibited the acute
elevation of the serum activities of AST, ALT, ALP and γ-GT enzymes and serum level
of BIL. PCM-induced lipid peroxidation was likewise attenuated by both extracts. The
activities of the antioxidant enzymes (GPx, SOD, CAT) in the liver homogenates were
increased by both extracts, while GSH concentration was reduced. The histopathological
results supported the biochemical findings. The results of the in vitro antioxidant
effect revealed considerable antioxidant activity for both extracts. It was concluded
that A. persicus and A. tournefortii possess hepatoprotective activities that could
be partly attributed to their antioxidant effects.
Keywords: Astragalus persicus, Astragalus tournefortii, hepatoprotection, paracetamol,
antioxidant