人体CYP鉴定亚型参与普萘洛尔对映体的新陈代谢——N-desisopropylation主要由CYP1A2介导的。

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Yoshimoto K, Echizen H,千叶K,塔米,Ishizaki T

人体CYP鉴定亚型参与普萘洛尔对映体的新陈代谢——N-desisopropylation主要由CYP1A2介导的。

Br中国新药杂志。1995年4月,39(4):421 - 31所示。

PubMed ID
7640150 (在PubMed
]
文摘

1。研究用人类肝微粒体和六个重组人类CYP亚型(例如CYP1A2, 2 a6, 2 b6, 2 d6 2 e1和3 a4)进行识别细胞色素P450 (CYP)同种型(s)参与环4-hydroxylation和侧链N-desisopropylation普萘洛尔对映体的人类。2。alpha-Naphthoflavone和7-ethoxyresorufin (CYP1A1/2)的选择性抑制剂抑制N-desisopropylation R -和S-propranolol由人类肝脏微粒体20 - 40%,分别,而奎尼丁(CYP2D6的选择性抑制剂)废除的4-hydroxylation普萘洛尔对映体几乎完全。相比之下,sulphaphenazole (CYP2C8/9抑制剂),S-mephenytoin (CYP2C19抑制剂),troleandomycin (CYP3A3/4抑制剂)和二乙基二硫代氨基甲酸(CYP2E1抑制剂)引起只有弱抑制对普萘洛尔的影响通过两个测量代谢途径代谢。3所示。之间的显著相关性(P < 0.01)观察的微粒体N-desisopropylation普萘洛尔对映体和非那西汀的O-deethylation在11个不同的人类肝脏微粒体样本(r = 0.98和0.77 r -和S-propranolol,分别)。略大(r = 0.60, P全等0.05)之间的相关性也观察到N-desisopropylation S -,但不是S-mephenytoin R-propranolol和4羟基化的。之间没有明显的相关性观察N-desisopropylation普萘洛尔对映体和2-hydroxylation去郁敏,甲苯磺丁脲的羟基化或6 beta-hydroxylation睾酮。4所示。 Significant (P < 0.01) correlations were observed between the microsomal 4-hydroxylation of R- and S-propranolol and the 2-hydroxylation of desipramine (r = 0.85 and 0.98, respectively). A weak (r = 0.66), albeit significant (P < 0.05) correlation was observed between the 4-hydroxylation of R-, but not of S-propranolol and the hydroxylation of tolbutamide. No significant correlations were observed between the 4-hydroxylation of propranolol enantiomers and the oxidation of other substrates for CYP1A2, 2C19, and 3A3/4. 5. Recombinant human CYP1A2 and CYP2D6 exhibited comparable catalytic activity with respect to the N-desisopropylation of both propranolol enantiomers; only expressed CYP2D6 exhibited a marked catalytic activity with respect to the 4-hydroxylation of both propranolol enantiomers.(ABSTRACT TRUNCATED AT 400 WORDS)

DrugBank数据引用了这篇文章

药物酶
药物 生物 药理作用 行动
普萘洛尔 细胞色素P450 1 a2 蛋白质 人类
未知的
底物
细节
普萘洛尔 细胞色素P450 2 d6 蛋白质 人类
未知的
底物
抑制剂
细节
Sulfaphenazole 细胞色素P450 2 c8 蛋白质 人类
未知的
抑制剂
细节