Antioxidant activity of ethanolic extract of Calotropis procera root in wistar rats

Kunjumon Dayana; Megaravalli R. Manasa

doi:10.18203/2319-2003.ijbcp20184212

Authors

Kunjumon Dayana Department of Pharmacology, Pushpagiri Institute of Medical Sciences and Research Centre, Thiruvalla, Kerala, India
Megaravalli R. Manasa Department of Pharmacology, Karwar Institute of Medical Sciences, Karwar, Karnataka, India

DOI:

https://doi.org/10.18203/2319-2003.ijbcp20184212

Keywords:

Antioxidant, Calotropis procera, Free radicals, Wistar rats

Abstract

Background: Free radicals generated as by-products of metabolism can cause damage to lipids, proteins and DNA. They are scavenged by endogenous antioxidant mechanisms. But when these mechanisms are overwhelmed, free radicals can cause toxicity. There is a need to identify new antioxidant compounds. Hence the current study was undertaken to assess the antioxidant activity of ethanolic extract of Calotropis procera roots in Wistar rats.

Methods: Wistar rats were divided into 4 groups. Group 1 (control) were administered vehicle. Group 2 received DMBA (30mg/kg BW, single dose) intraperitoneally on day 5. Group 3 was pre-treated with Calotropis procera root extract (500mg/kg BW) orally for 5 days. On day 5, they were given DMBA injection 2 hrs after the extract. Group 4 rats received only root extract for 5 days. All rats were sacrificed on day 6 and samples were analysed for TBARS, conjugated dienes and antioxidant enzymes (SOD, CAT, GPx) levels.

Results: The levels of TBARS, conjugated dienes were significantly increased, and antioxidant enzymes were decreased in group 2 both in plasma and erythrocytes. Pretreatment with C. procera root extract (group 3) has normalized the TBARS and conjugated dienes levels in plasma but in erythrocytes, TBARS levels are elevated. GPx activity was significantly decreased in both plasma and erythrocytes and SOD activity was decreased in erythrocytes. CAT activity was comparable to control group. Group 4 rats showed TBARS, conjugated dienes and antioxidant enzymes levels comparable to control.

Conclusions: The present study establishes that Calotropis procera root extract has antioxidant activity in wistar rats.

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