药物被人服用后,首先在胃肠道被吸收进入血液,再随着血液循环分布到全身和各组织器官中去。但是,药物怎样在体内起治疗作用,又如何被代谢排泄的呢?原来,绝大多数药物是在肝细胞内经过药物代谢酶的作用,才能进行转化。当然,人体其他组织内也存在一些相应的、与药物代谢有关的酶。这种药物代谢酶,医学上称为“药酶”。 After being taken, the drug is first absorbed into the bloodstream in the gastrointestinal tract and then circulated throughout the body and tissues and organs. However, how the medicine acts as a therapeutic agent in the body and how it is excreted by the metabolism? It turns out that most drugs undergo transformation through the action of drug-metabolizing enzymes in liver cells. Of course, there are also some corresponding enzymes in the human body that are related to drug metabolism. This drug-metabolizing enzyme, medically known as “drug enzyme.”