Objective To investigate changes of endothelin-1(ET-1) and endothelin-converting enzyme (ECE) in different time intervals after autograft vein implantation.

• 目的探讨内皮素 1(endothelin 1,ET 1)及内源性内皮素转化酶 (endothelinconvertingenzyme ,ECE)在自体静脉移植术后内膜增生中的作用。