analgesic and free radical scavenging activities of hydromethanolic extract of crateva adansonii stem bark

analgesic and free radical scavenging activities of hydromethanolic extract of crateva adansonii stem bark

;Nkeiruka E. Udeh;Samuel O. Onoja
jurnal farmasi galenika (galenika journal of pharmacy) 2015 Vol. 4 pp. 224-227
390
udeh2015journalanalgesic

Abstract

Objective:Crateva adansoniiis a moderately sized deciduous tree found throughout the tropics especially along the river banks. This study was aimed at the evaluation of the analgesic and antioxidant activities of the methanolic extract of C. adansoniistem-bark. Methods:The analgesic activity of Cratevaextract was investigated using both chemical and thermal models of nociception in rodents while the antioxidant activity was evaluated using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) photometric model. Results:The extract produced a minute concentration-dependent increase in free radical scavenging activities. The extract (100, 200, and 400 mg/kg) caused a significant (P< 0.05) dose-dependent reduction in the number of writhing in treated rats when compared to the negative control. The extract at 100, 200, 400 mg/kg, and pentazocine (3 mg/kg) increased the pain reaction time in the treated rats by 58.05%, 66.67%, 94.76%, and 79.40%, respectively, when compared to the negative control. Conclusion:The C. adansoniistem bark possesses analgesic activity against peripheral and central mediated pain sensation and also antioxidant properties. This study justifies the ethnomedical use of C. adansoniiin pain treatment. [J Intercult Ethnopharmacol 2015; 4(3.000): 224-227]

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