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  • Title: A role of TNF-alpha gene variant on juvenile ischemic stroke: a case-control study.
    Author: Rubattu S, Speranza R, Ferrari M, Evangelista A, Beccia M, Stanzione R, Assenza GE, Volpe M, Rasura M.
    Journal: Eur J Neurol; 2005 Dec; 12(12):989-93. PubMed ID: 16324093.
    Abstract:
    The role of genetic factors in the individual predisposition to develop ischemic stroke has been assessed by previous studies performed both in animal models and in humans. The main goal of the current investigation was to determine the possible contribution of genes encoding procoagulant and inflammatory factors on the occurrence of ischemic stroke in a cohort of young cases and corresponding controls. One hundred and fifteen cases of ischemic stroke were recruited for this study. A detailed clinical assessment, a definite etiologic diagnosis, as well as the presence/absence of known risk factors for ischemic stroke were obtained for each patient. As a control group 180 healthy, unrelated subjects were included. The whole population was screened for polymorphisms belonging to genes encoding FII, FV, alpha-fibrinogen, beta-fibrinogen, GP IIb/IIIa, tumor necrosis factor (TNF)-alpha, interleukin 1-beta. Hypertension was the most important risk factor for ischemic stroke in our cohort [OR = 6.9, confidence interval (CI) 2.9-16.7, P < 0.0001]. Among all genes tested, the TNF-alpha gene variant exerted a significant, independent effect on individual predisposition to ischemic stroke occurrence (OR = 1.8, CI = 1.01-3.3, P < 0.05). Our findings, obtained in a cohort of young Italian patients, may support the existence of a direct contributory role of TNF-alpha, a proinflammatory cytokine protein, in the susceptibility to brain damage.
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