Document Detail


Effects of exercise and antioxidant supplementation on endothelial gene expression.
MedLine Citation:
PMID:  21295869     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: The molecular mechanisms of exercise training induced cardiovascular protection are poorly understood. There is growing evidence that reactive oxygen species may be involved in a number of these adaptations and that antioxidants may be used to investigate this effect. OBJECTIVE: To determine the effects of exercise training and/or antioxidant supplementation on myocardial endothelium and vascular endothelium gene expression. METHODS: Male Wistar rats were divided into four groups: i) control; ii) exercise trained (90min of treadmill running 4d per week, 14weeks); iii) antioxidant-supplemented (α-tocopherol 1000IUkg(-1) diet and α-lipoic acid 1.6gkg(-1) diet, mixed with rat chow) and iv) exercise trained and antioxidant-supplemented. RESULTS: cDNA microarray analysis showed diverse expression changes in both left ventricular and coronary artery endothelial cells. In particular, RT-PCR analysis showed that a gene involved in cardiovascular disease progression, Ras homolog gene family member A, was down-regulated by exercise, and up-regulated by antioxidant supplementation in left ventricular endothelial cells. Furthermore, an important gene involved in inflammation, IL-6, was down-regulated by all treatments. CONCLUSIONS: Exercise training and/or antioxidant supplementation affects cardiac endothelial cell gene expression, and their effects on genes such as ras homolog gene family member A and IL-6 provides insight into the molecular mechanisms of their influences on cardiovascular diseases.
Authors:
Aya Matsumoto; Steven R Mason; Traute Flatscher-Bader; Leigh C Ward; Susan A Marsh; Peter A Wilce; Robert G Fassett; Judy B de Haan; Jeff S Coombes
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-3
Journal Detail:
Title:  International journal of cardiology     Volume:  -     ISSN:  1874-1754     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.
Affiliation:
School of Human Movement Studies, The University of Queensland, Brisbane, Queensland, Australia.
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