Quantification of Antinociceptive and Anti-inflammatory Potentials of Different Ocimum gratissimum Linn. Leaf Extracts in Male Whistar Albino Rats
Journal Title: European Journal of Medicinal Plants - Year 2016, Vol 17, Issue 3
Abstract
Aim: This study was aimed at quantifying the antinociceptive and anti-inflammatory potency and efficacy of aqueous (AQ) and ethanolic leaf extracts of O. gratissimum (ET) in Whistar rats. Methodology: Inflammation (paw edema) was induced in rats (n=5 per group) with fresh egg albumin (0.1 ml); groups for anti-inflammatory experiment were pretreated (0.5 h), while those for anti-nociceptive experiment were post-treated (2.5 h) with AQ (200, 400 or 800 mg/kg, p.o.), ET (200, 400 or 800 mg/kg, p.o.), piroxicam (20 mg/kg, i.p.), or normal saline (1 mL/kg, i.p.). Paw sizes of anti-inflammatory group rats were measured at 0 and 2 h after injection of phlogistic agent using plethysmometer, whereas mechanical nociceptive thresholds were measured in anti-nociceptive group rats before and 2 h after test agent treatments using analgesymeter. Results: There was neither change in inflammatory reaction (after egg albumin injection at time 0 or 2 h) nor threshold in control rats before or after normal saline treatment. AQ inhibited (P = .05) paw edema at 400 mg/kg (26%) and 800 mg/kg (64%); whereas all three doses of ET caused inhibitions (35, 39 and 32%, respectively) compared to the egg albumin induced values. AQ and ET treatments increased (P = .05) mechanical nociceptive thresholds, but maximum effects were observed at 400 mg/kg for both extracts (144 and 270%, respectively) compared to values obtained before extract treatment. Piroxicam produced significant inhibitions in inflammation (20%) and nociception (100%). Conclusion: ET is more potent, but AQ is about twice as efficacious as ET in anti-inflammatory activity. Also, ET is more potent and has a higher analgesic efficacy than AQ.
Authors and Affiliations
J. S. Aprioku, O. S. Joseph, A. W. Obianime
Keywords
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- EP ID EP349564
- DOI 10.9734/EJMP/2016/30150
- Views 95
- Downloads 0
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