血管内皮细胞（ＶＥＣ）的生物学功能已成为学者们关注的课题之一。它既属于血管内成分 ,又是各器官的实质。正常情况下 ,ＶＥＣ形成一道“栅栏” ,阻止管内成分外渗 ,并为管腔提供一无血栓形成的表面 ,维持抗凝环境。此外 ,ＶＥＣ还是许多重要生理、病理过程发生的场所 ,如止 The biological function of vascular endothelial cells (VECs) has become one of the topics of concern to scholars. It is not only an intravascular component, but also the essence of various organs. Under normal circumstances, VEC to form a “fence” to prevent the tube components of extravasation and lumen to provide a non-thrombosis of the surface, to maintain the anticoagulant environment. In addition, VEC is also a place where many important physiological and pathological processes occur