细胞色素P450 人

Cytochrome P450 is a heterogeneous family of isozymes whose primary function is to oxidize small molecules both as a function of intermediary metabolism (e.g., fatty acids) and to detoxify exogenous compounds (drugs or toxins). Alterations in the renal formation of Cytochrome P450 metabolites from arachidonic acid may participate in the formation of hypertension. Therefore, they have been identified as candidate mediators in the development of this multifactorial disease.

细胞色素P450是异质性同工酶家族，其主要功能是氧化小分子，发挥中间代谢（如脂肪酸）功能和对外源性化合物（药物或毒素）进行解毒。有些同工型具有有限的底物特异性，而其他同工酶则比较混杂。CYP1A1亚型催化乙氧基试卤灵的7-脱乙基。细胞色素P450(CYP)在外源物解毒、细胞代谢和稳态中起重要作用。药物相互作用的一种主要机制就是激活或抑制这类酶。CYP酶可被多种外源物和内源底物经由受体依赖途径转录激活。基于代谢的药物相互作用主要影响就是抑制这类酶，许多化疗药物可通过抑制或诱导细胞色素P450酶系引发药物互作。

Cytochrome c Reductase, b₅, P450 content and p-Nitrophenol Hydroxylase activity reported on a lot-specific basis.