Abstract Title:

Withania somnifera provides cardioprotection and attenuates ischemia-reperfusion induced apoptosis.

Abstract Source:

Clin Nutr. 2008 Aug;27(4):635-42. Epub 2008 Jul 11.1: PMID: 18620784

Abstract Author(s):

Ipseeta Ray Mohanty, Dharamvir Singh Arya, Suresh Kumar Gupta

Abstract:

Full Citation: "BACKGROUND & AIMS: The present study was undertaken to evaluate the cardioprotective mechanisms of Withania somnifera (Ws), in the setting of ischemia and reperfusion (IR) injury. METHODS: Wistar rats were divided into three groups and received orally saline (sham, control IR) and Ws-50 mg/kg (Ws-IR), respectively, for 1 month. On the 31st day, in the rats of control IR and Ws-IR group, LAD coronary artery occlusion was undertaken for 45 min followed by 1 h reperfusion. Subsequently, all the animals were sacrificed for biochemical, immunohistochemical {Bax and Bcl-2 protein}, terminal deoxynucleotidyl transferase biotin-dUTP nick end labeling (TUNEL) positivity and histopathological studies. RESULTS: Post-ischemic reperfusion injury resulted in significant cardiac necrosis, apoptosis, decline in antioxidant status and elevation in lipid peroxidation in the IR control group as compared to sham. Ws prior-treatment favorably restored the myocardial oxidant-antioxidant balance, exerted marked anti-apoptotic effects {upregulated Bcl-2 (p<0.001) protein, decreased Bax (p<0.01) protein, and attenuated TUNEL positivity (p<0.01)}, and reduced myocardial damage as evidenced by histopathologic evaluation. CONCLUSIONS: The antioxidant and anti-apoptotic properties of Ws may contribute to the cardioprotective effects."

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