Effect of the poly(ADP-ribose) polymerase inhibitor on the apoptosis of islet cell induced by free fatty acid
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    Abstract:

    Objective:To explore the effects of PARP inhibitor(3-Aminobenzamide) on the apoptosis and necrosis of islet cell induced by palmitic acid. Methods:The RIN-m5F cell line was routinely cultured,and MTT method was employed to evaluate the proliferation of the RIN-m5F cell line. Moreover,Flow cytometry and TUNEL method were enrolled to analyze the apoptosis and necrosis of the RIN-m5F cell line. Results:Palmitic acid significantly inhibited the proliferation of the RIN-m5F cell line(P < 0.01).The apoptosis and necrosis of the RIN-m5F cell line treated by lower concentration of 3-Aminobenzamide and palmitic acid were obviously lower than that treated by palmitic acid alone after 24 h(P < 0.01),but the apoptosis was more significantly enhanced when the concentration of 3-Aminobenzamide higher(P < 0.01). Conclusion:Lower concentration of 3-Aminobenzamide could suppress effectively the apoptosis and necrosis of RIN-m5F cell line induced by palmitic acid,but higher concentration of 3-Aminobenzamide alternatively enhanced the apoptotic rate. It was indicated that 3-Aminobenzamide could have positive and negative effect in different concentration on the apoptosis of islet cell induced by palmitic acid and could be served as a novel therapeutic target for type 2 diabetes.

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PAN Yu-qing,ZENG Qing-di,XU Xiang-hong,HE Bang-shun,MAO Xiao-Ming,WANG Shu-kui.Effect of the poly(ADP-ribose) polymerase inhibitor on the apoptosis of islet cell induced by free fatty acid[J].,2008,28(3):291-295326.

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  • Received:September 12,2007
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