首都医科大学学报 ›› 1996, Vol. 17 ›› Issue (1): 32-35.

• 论著 • 上一篇    下一篇

氧化型低密度脂蛋白的制备

王拥军, 温玫, 庞式琪   

  1. 首都医科大学宣武医院神经内科实验室
  • 收稿日期:1995-03-24 修回日期:1900-01-01 出版日期:1996-01-15 发布日期:1996-01-15

The Preparation of Oxidized Low Density Lipoprotein(ox-LDL)

Wang Yongjun, Wen Mei, Pang Shiqi   

  1. Lab. of Neurology, Xuanwu Hospital, Capital University of Medical Sciences
  • Received:1995-03-24 Revised:1900-01-01 Online:1996-01-15 Published:1996-01-15

摘要: 在体外用Cu2+诱导法使LDL氧化修饰,利用紫外法监测氧化过程中所形成的结合二烯键,发现整个反应分为3个时相,即延迟期、快速反应期和分解期。利用硫代巴比妥反应物测定,发现氧化后LDL中每mg蛋白脂质过氧化物增加了15倍。

关键词: 低密度脂蛋白, 氧化修饰, 结合二烯键, 硫代巴比妥反应物

Abstract: Low density lipoprotein(LDL)was oxidized with Cu2+ in vitro.A lag phase was followed by oxidave modification after addition of CuCl2, and about 15 h,the reaction reach a peak.LDL oxidation was continuously monitored spectrophotometrically at 234 nm to follow the formation of conjugated dienes.Three phases were found in oxidation curve:Lag phase, propagation phase and decomposition phase.By determinating thiobarbituric acid reaction substances(TBARS),we found the lipid peroxidation increased as much as 15 times in LDL.

Key words: low density lipoprotein, oxidative modification, conjugated dienes, thiobarbituric acid reaction substances(TBARS)

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