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  • Title: [A cross-sectional study on angiotensin-converting enzyme and angiotensin II type I receptor gene polymorphism and cerebral infarction].
    Author: Yuan XD, Hou QX, Wu SL, Pei HZ, Li HF.
    Journal: Zhonghua Liu Xing Bing Xue Za Zhi; 2003 Sep; 24(9):822-6. PubMed ID: 14521778.
    Abstract:
    OBJECTIVE: To explore the relation of angiotensin-converting enzyme (ACE) gene polymorphism, angiotensin II type I receptor (ATIR) gene polymorphism and other factors on cerebral infarction. METHODS: One thousand three hundred fifty-one subjects from Tangshan coalmine were enrolled with study method of cluster sampling. Face to face interviews were conducted to fill in questionnaires by trained interviewers. ACE gene, ATIR gene and inflammation factors including tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), IL-8, IL-10, C reactive protein (CRP), fibrinogen (Fg), fibrin monome polymerized velocity (FMPV), absorbance maximum (A(max)), FMPV/A(max), were measured. RESULTS: No different prevalence rates of ACE genotype were found on cerebral infarction. The distributions of AA genotype of ATIR gene in the cerebral infarction was higher than that of the controls. The prevalence of AA genotype was higher than other groups, but the prevalence of combined genotype did not show much difference. Under the existence of factors that related to cerebral infarction, AA genotype frequencies were higher than those of non-smoking and with hypertension. IL-6, ATIR gene polymorphism, sex, FMPV/A(max) were strongly related to cerebral infarction. The level of IL-6 was higher than the normal ones. CONCLUSIONS: The prevalence of cerebral infarction obviously increased in the hypertensive groups having AA genotype of ATIR gene. In the cerebral infarction groups, the level of IL-6 was higher than that in the normal population, indicating that these can be resulted from local inflammation and immunity reactivity. Environmental and genetic factors in the pathogenesis of cerebral infarction might have coordinating functions.
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