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Hcy对巨噬细胞胆固醇流出的影响及内质网应激机制的研究

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摘要 目的:探讨同型半胱氨酸(Homocysteine,Hcy)对巨噬细胞胆固醇流出的影响及内质网应激的作用机制。方法培养THP-1单核细胞源性巨噬细胞后,分别用不同浓度的Hcy(50、100、200、500 M)处理24h,以未加Hcy的细胞作为对照组,以100 M Hcy+叶酸+维生素B12(VB12)作为干预组。结果 Hcy可以减少巨噬细胞内胆固醇的流出,与对照组相比有统计学意义(P<0.05),但并不呈量效关系。干预组与100 M Hcy 组相比TC含量降低,ox-LDL及 GRP78、XBP-1、CHOP含量下降,差异有显著性(P<0.05)。结论 Hcy使巨噬细胞内胆固醇的流出受阻,并通过上调ox-LDL含量诱导内质网应激参与了动脉粥样硬化的发生发展。
出处 《医学信息(医学与计算机应用)》 2014年第1期93-94,共2页 Medical Information
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