Abstract: | AbstractContext: Ginger [Zingiber officinale Roscoe. (Zingiberaceae)] has been universally used as a spice as well as for its health benefits.Objective: The present study evaluates the protective effect of the standardized extract of ginger against isoproterenol (ISO)-induced myocardial infarction (MI) in rats.Materials and methods: Wistar rats were pretreated orally with three doses of standardized ginger extract (100, 200, and 400?mg/kg of body weight) or propranolol (5?mg/mL) for 28?d prior to ISO (85?mg/kg) induced MI in two doses on days 29 and 30. The rats were sacrificed 48?h after the first induction; serum and hearts were collected for biochemical and histopathological analysis.Results: Gingerols and shogaols were identified and quantitatively analyzed in the extracts using validated reversed phase HPLC methods. Pretreatment with ginger extract at 400?mg/kg showed a significant decrease (p?0.05) in all the cardiac enzyme activities, i.e., cardiac troponin I (cTnI) (0.57?ng/mL), creatine kinase MB isoenzyme (CK-MB) (10.34?pg/mL), lactate dehydrogenase (LDH) (115.22?U/L), alanine transaminase (ALT) (15.79?U/L), and aspartate transaminase (AST) (46.72?U/L) when compared with ISO-control rats. There were significant rises (p?0.05) in the activity of glutathione peroxide (GPx) (53.16?U/L), catalase (CAT) (210.41?U/L), and superoxide dismutase (SOD) (280.89?U/mL) of the pretreated rats when compared with the ISO-control. Histopathological examination showed an improvement in membrane cell integrity in pretreated rats compared with untreated rats.Conclusion: The ethanol extract of ginger exhibited cardioprotective potential in treating myocardial injury following ISO administration. |