Abstract
Ocimum gratissimum L. is used in traditional medicine for the treatment of bacterial infections and anaemia. This study was designed to evaluate the effect of O.gratissimum leaf extract on phenylhydrazine (PHZ)-induced anaemia and toxicity in rats. The experimental rats were divided into five groups (A-E) (n=6/sex/group). Each rat in groups B-E was intraperitoneally administered 50mg/kg of PHZ for two consecutive days. Group A (normal control) did not receive any PHZ, group B (negative control), group C received orally 5mg/kg ferrous sulphate whereas groups D and E received 200 and 400mg/kg O.gratissimum leaf extract respectively, for 14days. Red blood cell count, packed cell volume, haemoglobin concentration and high-density lipoprotein increased significantly (p<0.05) whereas low-density lipoprotein and very-low-density lipoprotein decreased in extract-treated groups when compared to the negative control. O.gratissimum (400mg/kg extract) and standard drug (5mg/kg ferrous sulphate) significantly (p<0.05) reduced the levels of aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase. The results of this study indicate that O.gratissimum leaf extract has a restorative effect on the phenylhydrazine-induced metabolic distortions in the blood, liver, and kidney, and therefore could be used therapeutically as an anti-anaemic tonic.
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