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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2004, Vol. 9 ›› Issue (2): 166-170.

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Cytotoxicity of oxidized low-density lipoprotein on PC12 cells

CAO Li, YIN Hong-Cao1, ZHOU Li1, WANG Yong-Jun   

  1. Department of Neurology, Tiantan Hospital, Capital University of Medical Sciences, Beijing 100050;
    1Department of Pathology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing 100005, China
  • Received:2003-06-07 Revised:2003-12-02 Online:2004-02-26 Published:2020-11-16

Abstract: AIM: To investigate the cytotoxicity of oxidized low-density lipoprotein (oxLDL) on PC12 cells.METHODS: PC12 cells were applied to be a neuron model and exposed to oxLDL.Cell injury was evaluated by cell viability (MTT assay), cell lysis (LDH assay), DNA fragmentation (TUNEL assay) and Caspase-3 activity (Caspase assay).RESULTS: Most of PC12 cells treated with oxLDL showed cell lysis changes and a few cells showed apoptotic changes, observed with electromicroscopically .The cell viability decreased with the concentration of oxLDL increasing.As the concentration of oxLDL increased, LDH release, DNA fragmentation and Caspase-3 activity also increased.However, there was no significant alteration in untreated control cultures and LDL control.CONCLUSION: oxLDL, but not native LDL, resultes in a dose- and time-dependent neuron death including cell lysis and apoptosis in which Caspases-3 participates.

Key words: oxidized low-density lipoprotein, PC12 cells, cytotoxicity

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