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ACE 是一种二肽羧基肽酶,主要存在于肺毛细血管内皮细胞的管腔面,此酶能使血管紧张素Ⅰ转化为血管紧张素Ⅱ,并能使缓激肽降解。业已证明高雪氏病、麻风、矽肺等病人的血清 ACE 活性增高,但在各种肝脏疾病中,血清 ACE 活性的变化目前尚无报道。作者分别测定了181例各种肝病患者及80名正常人的血清 ACE 水平。结果表明,肝病病人 ACE 活性高于正常人。在各种肝脏疾病申,血清 ACE 活性以肝硬化最高、慢性迁延性肝炎、慢性活动性肝炎次之,脂肪肝病人 ACE 活性同正常人;值得注意的是肝外阻塞性黄疸
ACE is a dipeptidyl carboxypeptidase mainly found on the luminal surface of pulmonary capillary endothelial cells. This enzyme converts angiotensin I to angiotensin II and degrades bradykinin. Serum ACE activity has been shown to be elevated in patients with Gaucher’s disease, leprosy, silicosis, etc. However, there has been no report on the changes of serum ACE activity in various liver diseases. The authors measured serum ACE levels in 181 patients with various liver diseases and 80 normal individuals. The results show that patients with liver disease ACE activity than normal. In various liver diseases, serum ACE activity is highest in patients with cirrhosis, chronic persistent hepatitis, chronic active hepatitis, ACE activity in fatty liver patients with normal; it is noteworthy that extrahepatic obstructive jaundice