Sticking sluggish blood disease high is the pathology that is main show with haemal viscosity heighten is asked for integratedly , blood stream obstruction is increased , flow is decelerated , affect to small artery and blood capillary and small loop especially apparent , cause quantity of constituent blood perfusion to decrease , generation is short of blood anoxic symptom 高粘滞血症是以血液粘度增高为主要表现的病理综合征，血流阻力加大，流动减慢，尤其对小动脉和毛细血管及微循环影响明显，致使组织血液灌注量减少，产生缺血缺氧的症状。
It is well known that paf , a membrane lipid derivative molecule , is increased duing ischemia and hypoxia , which stimulates the further release of glutamate at presynaptic endings . ginkgolide b , one of the component of ginkgo biloba leaves , is a potent paf receptor antagonist 研究者们在筛选和寻找防治缺血缺氧性脑损伤的过程中，已经确实证明了天然银杏叶的组分之一ginkgolideb是一种强有力的高特异性天然paf受体拮抗剂，可与位于突触前膜的特异性paf受体结合。
