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PPARγ激动剂罗格列酮对糖尿病大鼠GPIHBP1活性变化的影响

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摘要 目的探讨过氧化物酶体增殖物激活受体γ(peroxisome proliferator-activated receptor-γ,PPARγ)激动剂罗格列酮(RSG)对糖尿病大鼠糖基化磷脂酰肌醇锚定高密度脂蛋白结合蛋白1(glycosylphosphatidylinositol-anchored high-density lipoprotein-binding protein 1,GPIHBP1)活性变化的影响及GPIHBP1与PPARγ的关系。方法 30只雄性Wistar大鼠分对照组(NC,n=10)、糖尿病模型组(DM,n=10)和罗格列酮处理组(RSG,n=10)。DM组和RSG组予高糖高脂饮食,并联合小剂量链脲佐菌素(STZ),以诱导2型糖尿病大鼠模型。造模成功后,RSG组以RSG无菌水混悬液灌胃。实验结束后,测定各组大鼠血糖(FBG)、三酰甘油(TG)、总胆固醇(TC)、糖化血红蛋白(HbA1c)、糖化血清蛋白(GSP)等生化指标;采用RT-PCR和Western blot检测各组大鼠脂肪组织和心脏GPIHBP1与PPARγmRNA和蛋白表达情况,分析其相关性。结果 GPIHBP1和PPARγ在糖尿病模型鼠中显著下调,PPARγ激动剂RSG能显著上调糖尿病大鼠GPIHBP1和PPARγ的表达,并显著改善糖尿病模型鼠疾病的发生发展。GPIHBP1的表达与PPARγ具有正相关的趋势。结论 GPIHBP1可能是PPARγ的一个靶基因,并在糖尿病发生发展中发挥关效果作用。
出处 《广东医学》 CAS CSCD 北大核心 2012年第6期730-732,共3页 Guangdong Medical Journal
基金 国家自然科学基金资助项目(编号:81070667)
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