肺除去血液后,只有几十克重,故肺部病变时,受损害的细胞绝对数甚少,加之肺组织本身含酶量甚低(如乳酸脱氢酶、转氨酶,碱性磷酸酶等均远低于其它组织),故呼吸系统疾病的酶学诊断直至近十几年才得到发展。现择各体液中对呼吸系统疾病较有诊断价值的酶综述如下。 After removing the blood from the lungs, there are only a few tens of grams, so when the lungs are damaged, the absolute number of damaged cells is very small, and the lung tissue itself contains a very low amount of enzymes (such as lactate dehydrogenase, transaminase, alkaline phosphatase, etc.) It is much lower than other organizations, so the enzymological diagnosis of respiratory diseases did not develop until more than a decade ago. The enzymes that are more valuable for diagnosis of respiratory diseases in various body fluids are summarized below.