缺血性脑卒中独立危险因素与纤维蛋白原的基因多态性

目的:研究基因单核苷酸多态性与缺血性脑卒中的关系,寻找缺血性脑卒中发病的遗传易感基因。资料来源:应用计算机检索Medline1980-2005年期间有关纤维蛋白原基因多态性与缺血性脑卒中的文献,检索词“stroke,PlasmaFibrinogen,polymorphism”,并限定文章语言种类为英文。同时计算机检索中国科技期刊全文数据库1995-2005年期间纤维蛋白原基因多态性与缺血性脑卒中的文献,并限定文章语言种类为中文。检索词“缺血性脑卒中,纤维蛋白原,基因多态性”,还通过与作者通信以获得全文等形式获得全文资料。资料选择:纳入文献只限于病例对照研究型论著,排除观察对比研究、经验总结、个案报告等文献。资料提炼:共检索到50余篇关于纤维蛋白原基因多态性与缺血性脑卒中的文献,20篇符合纳入标准,排除30余篇文献。资料综合:血浆纤维蛋白原水平受遗传和环境因素的共同作用,纤维蛋白原基因多态性对血浆纤维蛋白原水平起重要的调控作用,纤维蛋白原通过参与动脉粥样硬化和辅助血小板的聚集及改变血液流变学状态,促进血栓的形成使缺血性脑卒中的发病率增高。但是纤维蛋白原基因多态性的确切作用机制和分子功能还有待于进一步研究。结论:关于纤维蛋白原单核苷酸多态性与缺血性脑卒中的关系尚有争议,还需进一步的研究。

Gene polymorphism of fibrinogen: Is it an independent ris factor of ischemic stroke

OBJECTIVE: To investigate the relationship between single nucleotide polymorphism of gene and ischemic stroke and search for predisposing genes of ischemic stroke.DATA SOURCES: The Medline database was searched for articles of gene polymorphism of fibrinogen and ischemic stroke published from 1980 to 2005 with the key words of "stroke, plasma fibrinogen, polymorphism"in English. Meanwhile, Vip Information Database was also searched for literatures of gene polymorphism of fibrinogen and schemic stroke published between 1995 and 2005 with the key terms of "ischemic stroke, fibrinogen,gene polymorphism" in Chinese. Full-texts were gotten by correspondence with the authors.STUDY SELECTION: Included literatures were only case control study literatures. Literatures of contrast study, experience summary, individual case and so on were excluded.DATA EXTRACTION: Totally 50 articles of gene polymorphism of fibrinogen and ischemic stroke were retrieved. Twenty articles were accorded with inclusive criteria, and thirty articles were excluded.DATA SYNTHESIS: Level of plasma fibrinogen was co-affected by heredity and environment. Gene polymorphism of fibrinogen has important regulatory effects on the level of plasma fibrinogen. The fibrinogen accelerates thrombotic formation. As a result, the incidence rate of ischemic stroke increased by participating atherosclerosis, helping thrombocytic aggregation and changing the status of hemorheology. But definite mechanism and molecular function of gene polymorphism of fibrinogen deserved further research.CONCLUSION: The relationship between single nucleotide polymorphism of fibrinogen and ischemic stroke remains obscure. It also needs further study.