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Gene Polymorphisms of Angiotensin II Type 1 Receptor and Angiotensin-Converting Enzyme in Two Ethnic Groups Living in Zhejiang Province, China

Department of Biochemistry, Zhejiang University Medical School, Hangzhou 310006, China

Jinbiao Zhan

Department of Biochemistry, Zhejiang University Medical School, Hangzhou 310006, China, jzhan2k{at}cmm.zju.edu.cn

Weihong Feng

Department of Biochemistry, Zhejiang University Medical School, Hangzhou 310006, China

Polymorphisms of ACE insertion/deletion (I/D) and angiotensin II type 1 receptor (AT₁R) 1166A-C have been associated with many diseases, and distributions of their genotypes vary in different races and populations. The aim of this study was to investigate distributions of angiotensin-converting enzyme (ACE) and AT₁R genotypes in Han and She populations in ZheJiang province. We determined ACE and AT₁R genotypes in 189 Han and 163 She individuals. DNA was extracted from peripheral blood samples. Analyses of ACE and AT ₁R genotypes were performed by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). The frequencies of ACE genotypes and alleles among the Han sample (41.3%II, 41.3%ID, 17.5%DD; 61.9%I allele, 38.1%D allele) were similar to those among She individuals (39.9%II, 39.3%ID, 20.9%DD; 59.5%I allele, 40.5%D allele), with p=0.660; p=0.421. However, significant differences in the distributions of ACE polymorphism between men and women among She population were observed, with p=0.042, p=0.014. AT₁R genotype and allele frequencies in the Han population were (88.4%AA, 11.1%AC, 0.5%CC) and (93.9%A allele, 6.1%C) allele respectively. In the She population they were (78.0%AA, 21.3%AC, 0.6%CC) and (89.0%A allele, 11.0%C allele). The significant differences were found between Han and She populations with p=0.031, p=0.018, and within subgroups of women, with p=0.010, p=0.021. There were no significant differences within subgroups of men (p=0.476, p=0.261). The genotype distributions or allele frequencies of ACE and AT₁R were significantly different between the samples of the She and Han populations.

Key Words: Angiotensin receptor • Angiotensin-converting enzyme • Gene polymorphism • Chinese population

Journal of Renin-Angiotensin-Aldosterone System, Vol. 6, No. 3, 132-137 (2005)
DOI: 10.3317/jraas.2005.019


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