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The  in vivo  micronucleus assay was used to examine the anticlastogenic effects of crude extracts of  Bridelia ferruginea, Vernonia amygdalina, Tridax procumbens, Ocimum gratissimum,  and  Lawsonia inermis  in Wistar albino rats. Extracts of doses of 100 mg/kg body weight were given to rats in five groups for seven consecutive days followed by a single dose of 2-AAF (0.5 mmol/kg body weight). The rats were sacrificed after 24 hours and their bone marrow smears were prepared on glass slides stained with Giemsa. The micronucleated polychromatic erythrocyte cells (mPCEs) were thereafter recorded. The hepatoprotective effects of the plant extracts against 2-AAF-induced liver toxicity in rats were evaluated by monitoring the levels of alkaline phosphatase (ALP), gamma glutamyl transferase (GGT), and histopathological analysis. The results of the 2-AAF-induced liver toxicity experiments showed that rats treated with the plant extracts (100 mg/kg) showed a significant decrease in mPCEs as compared with the positive control. The rats treated with the plant extracts did not show any significant change in the concentration of ALP and GGT in comparison with the negative control group whereas the 2-AAF group showed a significant increase ( P  < 0.05) in these parameters. Some of the leaf extracts also showed protective effects against histopathological alterations. This study suggests that the leaf extracts have hepatoprotective potential, thereby justifying their ethnopharmacological uses.

Hepatoprotective Potential of Some Local Medicinal Plants against 2-Acetylaminoflourene-Induced Damage in Rat