Document Detail


Compound K, a metabolite of ginsenosides, induces cardiac protection mediated nitric oxide via Akt/PI3K pathway.
MedLine Citation:
PMID:  21338613     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: Compound K (C-K; 20-O-D-glucopyranosyl-20(S)-protopanaxadiol) is a novel ginsenosides metabolite formed by intestinal bacteria and does not occur naturally in ginseng. In this study, we investigated whether administration of C-K has protective effects on myocardial ischemia-reperfusion injury and its potential mechanisms. MAIN METHODS: We used in vivo mouse models of ischemia-reperfusion injury and performed biochemical assays in excised hearts. KEY FINDINGS: C-K reduced infarct size compared with the control group after ischemia-reperfusion. Immunoblot analysis showed that C-K significantly enhanced protein kinase B (Akt) and endothelial nitric oxide synthase (eNOS) activity. Wortmannin, a phosphoinositide 3-kinase (PI3K) inhibitor, blocked cardiac protection in vivo and attenuated phosphorylation of Akt and eNOS. Additionally, hearts of C-K pretreated mice showed inhibition of mitochondrial swelling induced by Ca(2+). SIGNIFICANCE: This study showed that Compound K pretreatment has protective effects on myocardial ischemia-reperfusion injury, partly by mediating the activation of PI3K pathway and phosphorylation of Akt and eNOS.
Authors:
Yasuo M Tsutsumi; Rie Tsutsumi; Kazuaki Mawatari; Yutaka Nakaya; Michiko Kinoshita; Katsuya Tanaka; Shuzo Oshita
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-18
Journal Detail:
Title:  Life sciences     Volume:  -     ISSN:  1879-0631     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375521     Medline TA:  Life Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2010. Published by Elsevier Inc.
Affiliation:
Department of Anesthesiology, Institute of Health Bioscience, The University of Tokushima Graduate School, Tokushima, JAPAN.
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