Altered ATP-sensitive potassium channels may underscore obesity-triggered increase in blood pressure
Aim: To determine whether ATP-sensitive potassium channels are altered in VSMC from arotas and mesenteric arteries of obese rat, and their association with obesity-triggered increase in blood pressure. Methods: Obesity was induced by 24 weeks of high-fat diet feeding in male Sprague-Dawley rats. Con...
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Published in | Acta pharmacologica Sinica Vol. 29; no. 10; pp. 1167 - 1174 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Nature Publishing Group
01.10.2008
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Subjects | |
Online Access | Get full text |
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Summary: | Aim: To determine whether ATP-sensitive potassium channels are altered in VSMC from arotas and mesenteric arteries of obese rat, and their association with obesity-triggered increase in blood pressure. Methods: Obesity was induced by 24 weeks of high-fat diet feeding in male Sprague-Dawley rats. Control rats were fed with standard laboratory rat chow. Blood pressure and body weight of these rats were measured every 4 weeks. At the end of 24 weeks, KATP channel- mediated relaxation responses in the aortas and mesenteric arteries, KATP channel current, and gene expression were examined, respectively. Results: Blood pressure and body weight were increased in rats fed with high-fat diet. KATP channelmediated relaxation responses, currents, and KATP expression in VSMC of both aortas and mesenteric arteries were inhibited in these rats. Conclusion: Altered ATP-sensitive potassium channels in obese rats may underscore obesity-triggered increase in blood pressure. |
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Bibliography: | electrophysiology R544.1 ATP-sensitive potassium channel; obesity- hypertension; electrophysiology; aorta; mesenteric artery aorta mesenteric artery ATP-sensitive potassium channel obesity- hypertension 31-1347/R ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1671-4083 1745-7254 |
DOI: | 10.1111/j.1745-7254.2008.00810.x |