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Title: The E23K polymorphism in Kir6.2 gene and coronary heart disease. Author: Xiong C, Zheng F, Wan J, Zhou X, Yin Z, Sun X. Journal: Clin Chim Acta; 2006 May; 367(1-2):93-7. PubMed ID: 16455067. Abstract: BACKGROUND: The G to A mutation in the Kir 6.2, the ATP-sensitive potassium channel subunit, resulted a glutamate (E) to lysine (K) substitution at codon 23, and the A allele was shown to have a relationship with high risk to type 2 diabetes in previous study. Their role in coronary heart disease (CHD) has not been evaluated. We hypothesized that the polymorphism would be associated with increased susceptibility to CHD. METHODS: The E23K gene polymorphism of Kir6.2 gene was analyzed by PCR-restriction site polymorphism (PCR-RSP) methods in 101 controls and 119 CHD patients. Serum lipids and C reactive protein concentrations were measured in all subjects. RESULTS: Among the CHD patients, the frequency of the G allele was higher (63.4% vs. 56.9%, P>0.05) and the frequency of the A allele was lower (36.6% vs. 43.1%, P>0.05) than among controls. No significant differences were found in allele frequencies between CHD and controls (P>0.05), but there were significant differences in GG and combined (GA+AA) genotypes frequencies (42.0% vs. 28.7%, and 58.0% vs. 71.3%, P<0.050). CONCLUSIONS: The E23K gene polymorphism in Kir6.2 gene appeared to be related to high susceptibility to CHD.[Abstract] [Full Text] [Related] [New Search]