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Research Article Free access | 10.1172/JCI119876

Angiotensinogen gene and hypertension in Chinese.

T Niu, X Xu, J Rogus, Y Zhou, C Chen, J Yang, Z Fang, C Schmitz, J Zhao, V S Rao, and K Lindpaintner

Program for Population Genetics, Harvard School of Public Health, Boston, Massachusetts 02115, USA.

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Published January 1, 1998 - More info

Published in Volume 101, Issue 1 on January 1, 1998
J Clin Invest. 1998;101(1):188–194. https://doi.org/10.1172/JCI119876.
© 1998 The American Society for Clinical Investigation
Published January 1, 1998 - Version history
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Abstract

The renin-angiotensin system plays a major role in regulating blood pressure and maintaining electrolyte and volume homeostasis. Previously, the angiotensinogen gene, which encodes the key substrate for renin within this system, has been reported linked to and associated with essential hypertension in White Europeans, African-Caribbeans, and Japanese. Therefore, we investigated whether the angiotensinogen gene might be similarly implicated in the pathogenesis of essential hypertension in Chinese by carrying out linkage analysis in 310 hypertensive sibling pairs. Genotypes for two diallelic DNA polymorphisms observed at amino acid residues 174 (T174M) and 235 (M235T) within the coding sequence and for two highly informative dinucleotide (GT)-repeat sequences (one in the 3' flanking region, and one at a distance of 6.1 cM from the gene) were determined. Affected sibpair analysis conducted according to three different algorithms (S.A.G.E./SIBPAL, MAPMAKER/ SIBS, and APM methods) revealed no evidence for linkage of the angiotensinogen gene to hypertension. Our data indicate that molecular variants of this gene do not appear to contribute materially to the pathogenesis of primary hypertension among Chinese (a notion supported by concomitant, direct estimates of power), and that the disease relevance of this gene may vary therefore depending on ethnicity.

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