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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Difference in the response to angiotensin II between left and right ventricular endocardial endothelial cells
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Difference in the response to angiotensin II between left and right ventricular endocardial endothelial cells

机译:左右心室内科细胞之间对血管紧张素II的反应差异

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1 receptor activation. In the present study, we verified whether the response of left EECs (EECLs) to Ang II is different than that of EECRs. Our results showed that the EC 50 of the Ang II-induced increase of cytosolic and nuclear calcium in EECLs was 10× higher (around 2 × 10 ?13 mol/L) than in EECRs (around 8 × 10 ?12 mol/L). The densities of both AT 1 and AT 2 receptors were also higher in EECLs than those previously reported in EECRs. The effect of Ang II was mediated in both cell types via the activation of AT 1 receptors. Treatment with Ang II induced a significant increase of cytosolic and nuclear AT 1 receptors in EECRs, whereas the opposite was found in EECLs. In both cell types, there was a transient increase of cytosolic and nuclear AT 2 receptors following the Ang II treatment. In conclusion, our results showed that both AT 1 and AT 2 receptors densities are higher in both EECLs compared to what was reported in EECRs. The higher density of AT 1 receptors in EECLs compared to REECs may explain, in part, the higher sensitivity of EECLs to Ang II.]]>
机译:1受体激活。在本研究中,我们验证了左EECS(EECLS)对Ang II的响应是否与EECR的响应不同。我们的研究结果表明,EECL中的Ang II诱导的细胞溶质和核钙的EC 50增加了10倍(约2×10?13 mol / L)(约8×10?12 mol / l) 。在EECL的1和2个受体中的密度也比以前在EECR中报道的那些受体的更高。通过在1个受体的激活中,在两种细胞类型中介导Ang II的效果。用Ang II治疗诱导EECR中1个受体的细胞溶质和核的显着增加,而相反的是在EECL中发现。在两种细胞类型中,在Ang II处理后2个受体存在细胞溶质和核的瞬时增加。总之,我们的结果表明,与EECR中报道的内容相比,在eecls的1和2处受体密度均较高。与Reecs相比,Eecls中的1个受体的较高密度可以部分地解释EECL对Ang II的敏感性。]>

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