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转氨酶在氨基酸代谢及蛋白质、脂肪、糖三者相互转化关系上占有极其重要的地位。其中谷——丙转氨酶(ALT)主要存在于肝细胞中,患肝炎时,肝细胞破坏或细胞膜通透性增高,ALT可渗入血液,使血中该酶活性显著升高,故转氨酶的活性可反映肝细胞损害的程度,所以临床上把ALT作为诊断肝炎的指标之一。但应当指出的是:并不是所有ALT升高都是肝炎所致,有许多肝炎外的原因
Aminotransferase in the amino acid metabolism and protein, fat, sugar conversion between the three occupies an extremely important position. Among them, ALT is mainly present in hepatocytes. When suffering from hepatitis, hepatocyte damage or cell membrane permeability increase, ALT can penetrate into the blood, causing the activity of this enzyme in blood to be significantly increased. Therefore, the activity of aminotransferase Reflect the extent of liver cell damage, so the clinical diagnosis of hepatitis ALT as one of the indicators. It should be noted, however, that not all ALT increases are caused by hepatitis and there are many causes of hepatitis