| Title | Transgenic mice over-expressing et-1 in the endothelial cells develop systemic hypertension with altered vascular reactivity |
| Creator | |
| Date Issued | 2011-11-11 |
| Source Publication | PLoS ONE
 |
| Volume | 6Issue:11 |
| Abstract | Endothelin-1 (ET-1) is a potent vasoconstrictor involved in the regulation of vascular tone and implicated in hypertension. However, the role of small blood vessels endothelial ET-1 in hypertension remains unclear. The present study investigated the effect of chronic over-expression of endothelial ET-1 on arterial blood pressure and vascular reactivity using transgenic mice approach. Transgenic mice (TET-1) with endothelial ET-1 over-expression showed increased in ET-1 level in the endothelial cells of small pulmonary blood vessels. Although TET-1 mice appeared normal, they developed mild hypertension which was normalized by the ET receptor (BQ123) but not by ET receptor (BQ788) antagonist. Tail-cuff measurements showed a significant elevation of systolic and mean blood pressure in conscious TET-1 mice. The mice also exhibited left ventricular hypertrophy and left axis deviation in electrocardiogram, suggesting an increased peripheral resistance. The ionic concentrations in the urine and serum were normal in 8-week old TET-1 mice, indicating that the systemic hypertension was independent of renal function, although, higher serum urea levels suggested the occurrence of kidney dysfunction. The vascular reactivity of the aorta and the mesenteric artery was altered in the TET-1 mice indicating that chronic endothelial ET-1 up-regulation leads to vascular tone imbalance in both conduit and resistance arteries. These findings provide evidence for the role of spatial expression of ET-1 in the endothelium contributing to mild hypertension was mediated by ET receptors. The results also suggest that chronic endothelial ET-1 over-expression affects both cardiac and vascular functions, which, at least in part, causes blood pressure elevation. © 2011 Leung et al. |
| DOI | 10.1371/journal.pone.0026994 |
| URL | View source |
| Language | 英语English |
| Scopus ID | 2-s2.0-80855133584 |
| Citation statistics | |
| Document Type | Journal article |
| Identifier | http://repository.uic.edu.cn/handle/39GCC9TT/6602 |
| Collection | Beijing Normal-Hong Kong Baptist University |
| Affiliation | 1.Department of Anatomy,The University of Hong Kong,Hong Kong SAR,Hong Kong 2.Department of Physiology,Institute of Vascular Medicine and Li Ka Shing Institute of Health Sciences,Chinese University of Hong Kong,Hong Kong SAR,Hong Kong 3.Department of Clinical Biochemistry,The University of Hong Kong,Hong Kong SAR,Hong Kong 4.Department of Pharmacology and Pharmacy,The University of Hong Kong,Hong Kong SAR,Hong Kong 5.Division of Science and Technology,United International College,Zhuhai,China 6.Research Center of Heart,Brain,Hormone and Healthy Aging,The University of Hong Kong,Hong Kong SAR,Hong Kong |
| Recommended Citation GB/T 7714 | Leung，Justin Wai Chung,Wong，Wing Tak,Koon，Hon Waiet al. Transgenic mice over-expressing et-1 in the endothelial cells develop systemic hypertension with altered vascular reactivity[J]. PLoS ONE, 2011, 6(11). |
| APA | Leung，Justin Wai Chung., Wong，Wing Tak., Koon，Hon Wai., Mo，Fong Ming., Tam，Sidney., .. & Chung，Sookja Kim. (2011). Transgenic mice over-expressing et-1 in the endothelial cells develop systemic hypertension with altered vascular reactivity. PLoS ONE, 6(11). |
| MLA | Leung，Justin Wai Chung,et al."Transgenic mice over-expressing et-1 in the endothelial cells develop systemic hypertension with altered vascular reactivity". PLoS ONE 6.11(2011). |
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