薬物代謝
(解毒代謝 から転送)
出典: フリー百科事典『ウィキペディア（Wikipedia）』 (2021/10/10 04:10 UTC 版)
薬物代謝（やくぶつたいしゃ）とは動植物における代謝の様式のひとつ。薬、毒物などの生体外物質（ゼノバイオティクス (Xenobiotics)、異物ともいう）を分解あるいは排出するための代謝反応の総称である。これらを行う酵素を総称して薬物代謝酵素という。全体的には対象物質の親水性を高め分解・排出しやすくする傾向がある。全般的に、生体に対する害を軽減する意味があると考えられるので解毒代謝ともいうが、結果的にはかえって毒性が増すこともある。また生体外物質のみでなく、生体内由来の不要となった物質（ステロイドホルモン、甲状腺ホルモン、胆汁酸、ビリルビンなど）も対象となる。
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