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Down-regulation of Connexin 43 mRNA in Mouse Hearts after Myocardial Infarction

机译:心肌梗塞后小鼠心脏连接蛋白43 mRNA的下调

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摘要

Gap junction remodeling have been reported in various types of heart disease. Information available for the gap junction remodeling after myocardial infarction is still limited. In the present study, we investigated mRNA expression of connexin 43 (Cx43), major protein of gap junction channels in compensated hypertrophied inter ventricular septum (IVS) after myocardial infarction (MI) in mice by using a real time quantitative PCR expression. Cx43 mRNA expression in the interventricular septum of MI mouse was significantly decreased by 2 fold (813.7+-252.6 molecules / 10~5 GAPDH molecules) compared to non-operated control (1628.9+-180.9) and sham-operated mice (2051.9+-169.8). There was no significant difference in Cx43 mRNA between control and sham groups. Down-regulation of Cx43 mRNA in compensated hypertrophied myocardium could be involved in the arrythmogenic substrate in the heart after MI.
机译:在各种类型的心脏病中都报告了间隙连接重塑。心肌梗死后间隙连接重塑的可用信息仍然有限。在本研究中,我们通过实时定量PCR表达研究了小鼠心肌梗死(MI)后代偿性肥厚性室间隔(IVS)中缝隙连接通道的主要蛋白连接蛋白43(Cx43)的mRNA表达。与非手术对照组(1628.9 + -180.9)和假手术小鼠(2051.9 +-)相比,MI小鼠室间隔中Cx43 mRNA的表达显着降低了2倍(813.7 + -252.6分子/ 10〜5 GAPDH分子)。 169.8)。对照组和假手术组之间的Cx43 mRNA没有显着差异。 MI后,代偿性肥厚心肌中Cx43 mRNA的下调可能与心脏致心律失常的底物有关。

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