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Endothelial Nitric Oxide Synthase Glu298Asp Gene Polymorphism is Associated with Hypertensive Response to Exercise in Well-Controlled Hypertensive Patients

 Jung-Sun Kim  ;  Jung Rae Cho  ;  Namsik Chung  ;  Yangsoo Jang  ;  Se-Joong Rim  ;  Donghoon Choi  ;  Jong-Won Ha  ;  Young-Guk Ko  ;  Chan Mi Park  ;  Hyun-Joon Shin  ;  Deok-Kyu Cho  ;  Jin-Bae Kim  ;  Jaemin Shim  ;  Sungha Park 
 YONSEI MEDICAL JOURNAL, Vol.48(3) : 389-395, 2007 
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PURPOSE: Hypertensive response to exercise (HRE) is known to be an adverse prognostic factor for future cardiovascular events and may be associated to endothelial dysfunction. Previous studies regarding endothelial nitric oxide synthase (eNOS) Glu298Asp polymorphism focused upon its relation to hypertension. In this study, we hypothesize that the polymorphism may be associated with inherent difference in endothelial response to exercise. PATIENTS AND METHODS: Two hundred sixty nine patients who underwent treadmill test were enrolled in this study; 77 patients (mean age 55.8 +/- 9.4 years) had hypertensive response (peak systolic BP of > or = 210 mmHg in men and > or = 190 mmHg in women). Pulse wave velocity (PWV) was measured on 153 patients of them. The Glu298Asp exchange in exon 7 was determined by the methods of single base extension with amplifying primers and probes for TaqMan. RESULTS: The percentages of the GG, GT and TT genotypes were 81.0, 18.6 and 0.4 %, respectively. The presence of GT or TT genotype was independently associated with prevention of HRE when controlled for age, sex, baseline systolic BP and homeostatic model assessment (HOMA) index (OR=0.35, p=0.016). Subgroup analysis showed that preventive effect for HRE of T allele was significant in females (p < 0.001) and patients without insulin resistance (p=0.009). CONCLUSION: In our study, eNOS Glu298Asp polymorphism was significantly associated with HRE. This result suggests that the presence of T allele of the Glu298Asp polymorphism may be a favorable factor to in preventing HRE, especially in female and patients without insulin resistance.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Ko, Young Guk(고영국) ORCID logo https://orcid.org/0000-0001-7748-5788
Kim, Jung Sun(김중선) ORCID logo https://orcid.org/0000-0003-2263-3274
Kim, Jin Bae(김진배)
Park, Sung Ha(박성하) ORCID logo https://orcid.org/0000-0001-5362-478X
Shin, Hyun Joon(신현준)
Shim, Jae Min(심재민)
Rim, Se Joong(임세중) ORCID logo https://orcid.org/0000-0002-7631-5581
Jang, Yang Soo(장양수) ORCID logo https://orcid.org/0000-0002-2169-3112
Chung, Nam Sik(정남식)
Cho, Jung Rae(조정래)
Choi, Dong Hoon(최동훈) ORCID logo https://orcid.org/0000-0002-2009-9760
Ha, Jong Won(하종원) ORCID logo https://orcid.org/0000-0002-8260-2958
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