Journal
JOURNAL OF HYPERTENSION
Volume 26, Issue 5, Pages 902-913Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/HJH.0b013e3282f6a65e
Keywords
association studies; essential; haplotype; hypertension; single nucleotide polymorphisms; TNFRSF4 gene
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Background Essential hypertension is a complex disorder that results from the interaction of a number of susceptibility genes and environmental factors. The TNFRSF4 (tumor necrosis factor receptor superfamily, member 4) gene was one of the genes that showed altered renal expression in long-term salt loading in mice. Moreover, association of the TNFRSF4 and TNFSF4 (tumor necrosis factor (ligand) superfamily, member 4) genes with myocardial infarction was recently reported. Since essential hypertension is a well-known risk factor for myocardial infarction, we hypothesized that TNFRSF4 could be a susceptibility gene for essential hypertension. Methods We performed a case -control study of TNFRSF4 in two independent population. Results Extensive investigation of single nucleotide polymorphisms of the entire gene suggested that it resided in one linkage disequilibrium block, and four single nucleotide polymorphisms in the 50 flanking region sufficiently represented major haplotypes. In the combined population, the frequency of the most frequent haplotype, C-C-A- A, was significantly lower (P = 8.07 X 10(-5)) and that of the second most frequent haplotype, C-T-G-A, was significantly higher (P = 6.07 X 10(-4)) in hypertensive subjects than in control subjects. This difference was observed only in female patients. The C-T-G-A haplotype showed a lower promoter activity than other haplotypes, suggesting a relationship with disease susceptibility. Conclusion Our results suggest that TNFRSF4 is a female-specific susceptible gene for essential hypertension.
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