V2EX p450

P450

定义 Definition

P450 通常指细胞色素 P450(Cytochrome P450):一大类主要存在于肝脏等组织中的,负责代谢药物、毒物与体内激素/脂类等物质;在药物相互作用与个体代谢差异中非常重要。(也常写作 CYP450

发音 Pronunciation (IPA)

/pi fr ffti/

例句 Examples

P450 enzymes help your liver break down many medicines.
P450 酶帮助你的肝脏分解许多药物。

Genetic differences in P450 activity can change how quickly a patient metabolizes a drug, affecting both efficacy and side effects.
P450 活性的遗传差异会改变患者代谢药物的速度,从而影响疗效与副作用。

词源 Etymology

“P450”源于早期对这种酶的光谱特征研究:当该蛋白与一氧化碳结合并处于还原状态时,会在约 450 nm 处出现明显吸收峰,因此得名 P450(P 常被解释为 pigment/色素蛋白的记号)。

相关词 Related Words

文学与著作 Literary Works

  • Goodman & Gilman’s The Pharmacological Basis of Therapeutics(《古德曼与吉尔曼:药理学基础》)多处讨论 CYP/P450 与药物代谢、相互作用
  • Lehninger Principles of Biochemistry(《雷宁格生物化学原理》)介绍细胞色素 P450 与氧化反应体系
  • Rang & Dale’s Pharmacology(《朗与戴尔药理学》)常见于药物代谢章节对 P450 家族的说明
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