动物实验和临床研究证实 ,脑卒中发生不仅与环境因素有关 ,还受遗传因素影响 ,但是目前人们对于脑卒中致病基因知之甚少。β2 肾上腺素能受体 (下称β2 受体 )不仅参与血管张力调节 ,还与糖脂代谢有关。研究发现 ,β2 受体至少存在 9种多态性 [1] ,其中Arg1 6Gly和 Gln2 7Glu比 Animal experiments and clinical studies have confirmed that the incidence of stroke is not only related to environmental factors, but also by the genetic factors, but at present people know little about the pathogenic genes for stroke. β2 adrenergic receptor (hereinafter referred to as β2 receptor) not only involved in vascular tone regulation, but also with glucose and lipid metabolism. The study found that β2 receptor at least nine polymorphisms [1], which Arg1 6Gly and Gln2 7Glu ratio