血管紧张素转化酶2基因多态性与高血压合并缺血性脑卒中

目的研究血管紧张素转化酶2（angiotention-converting cnzyme 2，ACE2）基因G9570A多态性与中国南方高血压患者发生缺血性脑卒中的关系。方法采用聚合酶链反应和限制性片段长度多态性的方法，检测单纯原发性高血压136例及原发性高血压合并缺血性脑卒中患者139例的ACE2基因．同时测定颈动脉内膜中层厚度及血浆血管紧张素Ⅱ水平，并进行组间对照研究，探讨ACE2基因G9570A多态性与原发性高血压患者中缺血性脑卒中发病的关系。结果原发性高血压合并缺血性脑卒中组A等位基因频率分布高于原发性高血压组（P〈0．05）；两组ACE2基因型分布不同（P〈0．05）；原发性高血压合并缺血性脑卒中组携带A／AA基因者血浆血管紧张素Ⅱ水平高于携带G／GG基因者（P〈0．05）。在男性原发性高血压合并缺血性脑卒中组携带A基因者颈动脉内膜中层厚度高于携带G基因者（P〈0．05）。结论原发性高血压患者中，携带A／AA基因者发生缺血性脑卒中的危险性相对较大．可能与其血管紧张素Ⅱ水平较高有关。

Gene polymorphisms of angiotensin-converting enzyme 2 and essential hypertension with stroke

Objectives To study the relationship between gene G9570A polymorphisms of angiotensin-converting enzyme 2(ACE2) and essential hypertension(EH) with stroke in southern Chinese population.Methods The ACE2 gene were measured in 139 cases of hypertension with stroke,136 cases of hypertension using polymerase chain reaction(PCR)to assess the contribution of polymorphisms of G9570A in ACE2 gene.Common carotid arteries intimae-medial thickness(IMT) and atherosclerotic plaque were detected by noninvasive high-resol...