Analysis of Endothelial Nitric Oxide Synthase Gene Polymorphisms with Cardiovascular Diseases in Eastern Taiwan

Nien-Tsung Lin；Ming-Ju Lee；Ru-Ping Lee；Antonio I. C. Hong；Hsing I Chen

endothelial nitric oxide synthase ； gene polymorphism ； cardiovascular disease

The Chinese Journal of Physiology

51卷1期（2008 / 02 / 01）

42 - 47

英文

A few studies have been carried out to address the correlation between the endothelial nitric oxide synthase (eNOS) gene polymorphisms and cardiovascular diseases (CVD) within the Taiwanese population. However, no report has documented the situations in eastern Taiwan, which has different ethnic groups from those in western Taiwan. In this study, we explored the relationship between polymorphic eNOS alleles and CVD in eastern Taiwan. DNA extraction and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis were employed for the detection polymorphism in exon 7 of the eNOS gene. A total of 198 subjects was included. The subjects were 120 patients with CVD such as hypertension, coronary artery disease (CAD), and stroke. Normal subjects (78) served as control. Analysis of the gene polymorphism revealed that the frequency of the eNOS gene variant containing a 27-bp repeat in intron 4 is similar between control subjects (aa: ab: bb = 0%: 21.8%: 78.2%), and patients with CVD (aa: ab: bb = 3.3%: 21.7%: 75.0%). The frequency of the Glu298Asp (894G→T) polymorphism in exon 7 of the eNOS gene was significantly different between control subjects (TT: GT : GG = 7.7%: 29.5%: 62.8%) and patients with CVD (TT: GT: GG = 5.0%: 74.2%: 20.8%). These results suggest that the Glu298Asp polymorphism in exon 7 of the eNOS gene is likely to be a risk factor for CVD in the eastern Taiwanese population.

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