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  • Title: Age and sex dependent genetic effects of neuropeptide Y promoter polymorphism on susceptibility to ischemic stroke in Koreans.
    Author: Kim NS, Ko MM, Cha MH, Oh SM, Bang OS.
    Journal: Clin Chim Acta; 2010 Sep 06; 411(17-18):1243-7. PubMed ID: 20435026.
    Abstract:
    BACKGROUND: In our previous study, the neuropeptide Y (NPY) C-399T promoter polymorphism (rs16147C>T) was identified as a risk factor for ischemic stroke in Koreans. In this study, we investigated whether age and sex modify the genetic effect of C-399T on susceptibility to ischemic stroke. METHODS: A total of 1,350 subjects (802 ischemic stroke patients, 548 healthy controls) were genotyped for C-399T using a primer extension method. The results were statistically analyzed for the genetic association of C-399T with ischemic stroke and clinical parameters. RESULTS: The TT genotype for C-399T was observed at a significantly lower frequency in stroke patients relative to control (CC+CT vs. TT, odds ratio [OR]=0.578, 95% confidence interval [95% CI]=0.360-0.927, P<0.05). This trend was also observed in female (OR=0.495, 95% CI=0.240-1.022) and older subjects (y>60, OR=0.556, 95% CI=0.304-1.018) with borderline statistical significance (P=0.0571 and P=0.0574, respectively). However, C-399T allele frequency was not different between controls and stroke patients in any groups. The C-399T polymorphism was found to be associated with body mass index and levels of some blood lipids. CONCLUSIONS: The C-399T NPY promoter polymorphism should be considered a genetic risk factor for ischemic stroke in the older adult and female Korean populations.
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