title: Endothelial nitric oxide gene T-786C polymorphism and subarachnoid hemorrhage in Korean population.
abstract: We aimed to elucidate whether the eNOS T-786C mutant allele is implicated in subarachnoid hemorrhage (SAH) susceptibility or vasospasm after SAH, and whether the mutant allele is differentially expressed in those with small and large ruptured aneurysms in Korean population. 136 consecutive patients diagnosed with aneurismal SAH and 113 controls were recruited. Polymerase chain reaction and direct sequencing of both strands were performed to determine genotypes with respect to the eNOS T-786C mutation. No significant difference was found between cases and controls with respect to the distributions of the two eNOS T-786C single nucleotide polymorphism (SNP) genotypes. No significant differences in the distributions of the eNOS T-786C SNP genotypes were found with regard to the sizes of ruptured aneurysms or the occurrence of vasospasm after SAH. Multiple logistic regression analysis after controlling for age and sex showed the eNOS T-786C SNP T/C geno-type was independently associated with an unfavorable outcome (GOS grade 3-5) of SAH (Exp (beta)=4.27, 95% CI 1.131-16.108, p=0.032). In conclusion, the eNOS T-786C mutation was not found to be associated with either a susceptibility to SAH or vasospasm after SAH, or with aneurysm size in Korean population. The eNOS T-786C SNP T/C genotype could be used as a prognostic marker in individuals with SAH.
authors.affiliation: Department of Neurology, Chonnam National University Medical School and Chonnam National University Research Institute of Medical Science, Gwangju, Korea.
authors.forename: Min-Kyung
authors.initials: MK
authors.lastname: Song
authors.forename: Myeong-Kyu
authors.initials: MK
authors.lastname: Kim
authors.forename: Tae-Sun
authors.initials: TS
authors.lastname: Kim
authors.forename: Sung-Pil
authors.initials: SP
authors.lastname: Joo
authors.forename: Man-Seok
authors.initials: MS
authors.lastname: Park
authors.forename: Byeong-Chae
authors.initials: BC
authors.lastname: Kim
authors.forename: Ki-Hyun
authors.initials: KH
authors.lastname: Cho
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D052250:Nitric Oxide Synthase Type III / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D013345:Subarachnoid Hemorrhage / Q000235:genetics*
chemical_list: C496314:NOS3 protein, human; D052250:Nitric Oxide Synthase Type III