ID | 13854 |
Eprint ID | 13854
|
フルテキストURL | |
タイトル(別表記) | Effect of zinc on halothane-induced liver injury in rats
|
著者 |
日高 秀邦
岡山大学医学部麻酔・蘇生学教室
|
抄録 | In a rat model, halothane causes liver injury by reductive interaction with microsomal cytochrome P-450 (P-450) and /or by a hepatotoxic effect mediated by halothane-derived free radicals. Rats that were pretreated with phenobarbital (0.1% in drinking water for 6 days) and fasted for the last day, then exposed to halothane (1.0%) under reduced oxygen tension (14%) for 2 horus developed hepatic centrilobular necrosis with marked elevation in serum GPT (GPT) 24 h after exposure. Pretreatment with a 5 mg/kg dose of zinc (Zn) 24 h prior to the exposure had no effect on GPT and liver necrosis. However, 10mg/kg and 20 mg/kg of Zn significantly decreased GPT and liver necrosis. Zn-pretreatment (5-20 mg/kg) significantly depleted hepatic microsomal P-450 before exposure in a dose dependent manner. Hepatic metallothionein (MT)-1 and MT-2 induced by Zn in a dose dependent manner and the levels did not significanlty differ prior to and after exposure to halothane under hypoxic conditions in all Zn-pretreated groups of rats. These results indicated that Zn-pretreatment has some protective effect against halothane-induced liver injury and suggested that this protective effect of Zn involves the depletion of P-450 which results in reduced interacton between P-450 and halothane in the microsomes and is not the result of MTs acting as free radical scavengers.
|
キーワード | ハロタン
肝障害
亜鉛
チトクローム P-450
メタロチオネイン
|
備考 | 原著
|
発行日 | 1994-10
|
出版物タイトル |
岡山医学会雑誌
|
出版物タイトル(別表記) | Journal of Okayama Medical Association
|
巻 | 106巻
|
号 | 9-10号
|
出版者 | 岡山医学会
|
出版者(別表記) | Okayama Medical Association
|
開始ページ | 1073
|
終了ページ | 1084
|
ISSN | 0030-1558
|
NCID | AN00032489
|
資料タイプ |
学術雑誌論文
|
オフィシャル URL | https://www.jstage.jst.go.jp/article/joma1947/106/9-10/106_9-10_1073/_article/-char/ja/
|
関連URL | http://www.okayama-u.ac.jp/user/oma/index.html
|
言語 |
日本語
|
著作権者 | 岡山医学会
|
論文のバージョン | publisher
|
査読 |
有り
|
Eprints Journal Name | joma
|