Premium
Genotyping the –6A/G functional polymorphism in the core promoter region of angiotensinogen gene by microchip electrophoresis
Author(s) -
Qin Jianhua,
Liu Zhaoyi,
Wu Dapeng,
Zhu Ning,
Zhou Xiaomian,
Fung Yingsing,
Lin Bingcheng
Publication year - 2005
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200406158
Subject(s) - genotyping , genotype , biology , allele , amplicon , genetics , microbiology and biotechnology , restriction fragment length polymorphism , allele frequency , single nucleotide polymorphism , polymorphism (computer science) , polymerase chain reaction , gene , genotype frequency
Angiotensinogen (AGT) gene has been regarded as one of the candidate genes for essential hypertension. In our study, the role of AGT gene as a putatively predisposing gene for hypertension was evaluated by genotyping a A (‐6) G polymorphism in the core promoter region in 123 patients with essential hypertension and 103 healthy controls. A microchip electrophoresis method coupled with polymorphism chain reaction (PCR)‐restriction fragment length polymorphism (RFLP) assay was used for genotyping the A (‐6) G single‐nucleotide polymorphism. The separation and detection of the digested PCR amplicons were completed just in 280 s or less. The genotype frequency fulfilled the criteria of the Hardy‐Weinbery equilibrium ( X 2 = 3.067, P > 0.05). The results showed a higher frequency of the –6 A allele (0.70) in the normotensive subjects, which is higher than those reported in Germany (0.47) and Czech (0.40) populations, but similar to that found in Japanese populations (0.73). The frequencies of genotype AA, AG, and GG were 0.46, 0.49, and 0.05 in hypertensive subjects, and 0.44, 0.53, and 0.03 in control subjects. There is no significant difference in the distributions of the genotype and allele between the two groups ( X 2 = 0.88, P > 0.05; X 2 = 0.024, P > 0.05). These findings differ from some of the results obtained in other ethnic groups, indicating the potential importance of ethnic origin in the assessment of genetic risk identifiers for a complex disease.