Evaluation of the acute and sub-acute toxicity of the ethanolic extract of Pericampylus glaucus (Lam.) Merr. in BALB/c mice

Objective: To evaluate the safety dose range of ethanolic extract from the leaves of Pericampylus glaucus (Lam.) Merr. by acute and sub-acute oral toxicity study on animal model. Methods: The acute and sub-acute toxicity study was carried out as per Organization for Economic Co-operation and Development guidelines 423 and 407. In acute toxicity study, the oral dose (300, 2000 and 4000 mg/kg) of tested plant extract was administered to three groups in single dose and general behavior, adverse effects and mortality were determined up to 72 h and compared to normal group. In sub-acute study, the tested crude plant extract was administered orally at doses of 600 and 1000 mg/kg for 28 days to the two animals groups and their body weight, hematological, serum hepatic biochemical parameters were evaluated and compared to normal group by sacrificing all group animals. Results: In acute toxicity, all treated groups' revealed neither mortality nor any significant alteration in behavior only drowsiness, sedation and lethargy were observed in two group, i.e. 2000 and 4000 mg/kg of the tested plant extract. In sub-acute toxicity study no change in hematological, biochemical parameter and organ body weight were observed during study compared to the normal group. The kidney function parameters [serum glutamic-oxaloacetic transaminase (aspartate transaminase), serum glutamic pyruvic transaminase (alanine transaminase)] were significantly increased following administration of tested crude plant extract (600, 1000 mg/kg). Conclusions: The result indicates that the oral administration of Pericampylus glaucus (Lam.) Merr. extract did not produce any significant toxic effect in BALB/c mice. Hence, the extract can be utilized safely for therapeutic use in pharmaceutical formulations.