血 管内皮细胞 (ｖａｓｃｕｌａｒｅｎｄｏｔｈｅｌｉａｌｃｅｌｌ,ＶＥＣ)不仅是血管内外物质交换和主动运输的一道通透性屏障 ,还具有其它多方面的功能 ,如保持血管内膜的完整 ,维持循环血液在血管内的流动状态 ;释放ＮＯ、前列环素、内皮素等小分子物质 ,调节血管的收缩和舒 Vascular endothelial cells (VECs) are not only a permeable barrier for the exchange and active transport of blood vessels both inside and outside of blood vessels, but also have other multifaceted functions such as maintaining intact blood vessels and maintaining the blood flow in the blood vessels. Release NO, prostacyclin, endothelin and other small molecules to regulate blood vessel contraction and relaxation