化学療法における酵素触媒による交換反応の重要性
Science (New York, N.Y.)
|September 17, 1954
まとめ
3-アセチルピリジンはマウスに毒性がありますが,ニコチナミドまたはDPNの投与は保護を提供します. ニコチナミドは,脳内の毒性アナログの形成を防止し,アナログは腫瘍に現れる.
科学分野:
- バイオケミストリー バイオケミストリー
- 薬理学 薬理学とは
- 腫瘍学 腫瘍学
背景:
- 3-アセチルピリジンはマウスで毒性を示しています.
- ニコチナミドとDPNは,3-アセチルピリジンによる毒性から保護しますが,ニコチン酸とトリプトファンはそうではありません.
- ニコチナミドは,マウス脳ホモゲネートにおけるDPNの3アセチルピリジンアナログの形成を阻害する.
研究 の 目的:
- 3-アセチルピリジンの毒性に対する保護メカニズムを調査する.
- ニコチナミドとDPNがアセチルピリジンの影響を軽減する役割を解明する.
- 様々な組織,特に腫瘍における3アセチルピリジンDPNアナログの形成と重要性を調べる.
主な方法:
- ネズミに3アセチルピリジン,ニコチナミド,DPN,ニコチン酸,トリプトファンを投与する.
- アナログ合成のためのマウス脳ホモゲネートの分析.
- 肝臓組織におけるDPN濃度の測定.
- 腫瘍組織からのDPNアナログの分離と識別.
主要な成果:
- ニコチナミドとDPNは,3-アセチルピリドインの毒性から保護しますが,ニコチン酸とトリプトファンはそうではありません.
- ニコチナミドは,3-アセチルピリジン DPN アナログの形成を脳ホモゲネートで阻害する.
- アセチルピリジンは肝臓のDPNレベルを上昇させるが,同位体を作らない.
- DPNのアナログは腫瘍組織で形成され,減少したDPNレベルと相関しており,分離され,同定されました.
結論:
- ニコチナミドとDPNは,3-アセチルピリジンの毒性に対抗するのに有効です.
- 3-アセチルピリジンDPNアナログの形成は組織特異であり,毒性に関連しています.
- DPN アナログを含む酵素触媒交換反応は,化学療法に影響を及ぼす可能性があります.
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