Abstract
AbstractThe hepatoprotective activity of an aqueous‐methanol extract of Rubia cordifolia (Rubiaceae) was investigated against acetaminophen and CCl4‐induced hepatic damage. Acetaminophen produced 100% mortality at a dose of 1 g/kg in mice while pretreatment of animals with plant extract (500 mg/kg) reduced the death rate to 30%. Acetaminophen at a dose of 640 mg/kg produced liver damage in rats as manifested by the rise in serum levels of GOT and GPT to 1447±182 and 899±201 IU/L (n = 10) respectively, compared with respective control values of 97±10 and 36±11. Pretreatment of rats with plant extract (500 mg/kg) lowered significantly (p <0.005) the respective serum GOT and GPT levels to 161±48 and 73±29. Similarly, hepatotoxic dose of CCl4 (1.5 mL/kg; orally) raised the serum transaminases (GOT and GPT) levels to 422±102 and 354±74 IU/L (n = 10) respectively compared with respective control values of 99±15 and 29±08 IU/L. The same dose of plant extract (500 mg/kg) was able to prevent significantly (p <0.01) the CCl4‐induced rise in serum enzymes and the estimated values of GOT and GPT were 95±09 and 33±07 IU/L, respectively. Moreover, it prevented CCl4‐induced prolongation in pentobarbital sleeping time confirming the hepatoprotective effects of the extract.
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