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左卡尼汀升高大鼠心肌细胞脂联素受体表达具明显时间依赖性 被引量:1

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摘要 目的:探讨左卡尼汀(L-carnitine,L-CN)升高波动性高糖处理的大鼠心肌细胞(rats myocardial cells,RMC)联素受体(AdipoR1和AdipoR2)的作用与L-CN作用时间的关系。方法:将RMC在波动性高糖培养液(5.5、20mmol/L每隔8h轮换1次)中培养5d后,随机分为只加低糖DMEM培养基的正常对照组、高糖组(20mmol/L)、波动性高糖处理组、波动性高糖+L-CN处理组(工作浓度5×102μmol/L刺激4、8、12、24、36、48h)。运用细胞增殖试验(CCK8法)检测细胞存活率,应用实时荧光定量PCR方法检测AdipoR mRNA表达的改变。结果:与波动性高糖组比较,L-CN处理后RMC AdipoR1 mRNA、AdipoR2 mRNA增高并具明显时间依赖性,L-CN(5×102μmol/L)处理24h后AdipoR mRNA增加最明显(P<0.05)。结论:在波动性高糖环境中,RMC AdipoR mRNA表达下调(P<0.05),L-CN能上调波动性高糖处理后心肌细胞AdipoR mRNA表达并具明显时间依赖性(P<0.05)(尤其AdipoR1 mRNA)。从而可能为L-CN类药物在治疗糖尿病性心肌病变时的合理、安全用药提供新思路、新证据。
出处 《实用医学杂志》 CAS 北大核心 2011年第5期761-763,共3页 The Journal of Practical Medicine
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参考文献12

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