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ORIGINAL ARTICLE
Year : 2014  |  Volume : 28  |  Issue : 2  |  Page : 82-88

Ameliorative effect of ethyl pyruvate in neuropathic pain induced by chronic constriction injury of sciatic nerve


1 Department of Pharmacology, All India Shree Shivaji Memorial Society's College of Pharmacy, Pune, Maharashtra, India
2 Department of Pharmacology, Padmashree Dr. Dnyandeo Yashwantrao Patil College of Pharmacy, Pune, Maharashtra, India
3 Department of Pharmacology, Indira Gandhi Government Medical College and Hospital, Nagpur, Maharashtra, India

Correspondence Address:
Varsha J. Bansode
Department of Pharmacology, All India Shree Shivaji Memorial Society's College of Pharmacy, Near RTO, Kennedy Road, Pune - 411 001, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-5333.132845

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Objective: The present study was designed to investigate the ameliorative effects of ethyl pyruvate (EP) in chronic constriction injury (CCI)-induced painful neuropathy in rats. Materials and Methods: EP 50 and 100 mg/kg was administered for 21 consecutive days starting from the day of surgery. The effects of EP in the paw pressure, acetone drop, and tail heat immersion tests were assessed, reflecting the degree of mechanical hyperalgesia, cold allodynia, and spinal thermal sensation, respectively. Axonal degeneration of the sciatic nerve was assessed histopathologically. The levels of thiobarbituric acid reactive species, reduced glutathione (GSH), catalase (CAT), and superoxide dismutase (SOD) were determined to assess oxidative stress. Key Findings: Administration of 50 and 100 mg/kg EP attenuated the reduction of nociceptive threshold in the paw pressure, acetone drop, and tail heat immersion tests. EP 100 mg/kg significantly attenuated reactive changes in histopathology and increase in oxidative stress. Conclusion: EP 100 mg/kg showed beneficial activity against nerve trauma-induced neuropathy. Hence, it can be used as a better treatment option in neuropathic pain (NP). The observed antinociceptive effects of EP may possibly be attributed to its antioxidant and anti-inflammatory activity.


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