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首页> 外文期刊>Biology Bulletin >The Epac Protein Inhibitor ESI-09 Eliminates the Tonic Phase of Aorta Contraction Induced by Endogenic Vasoconstrictors in Rats
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The Epac Protein Inhibitor ESI-09 Eliminates the Tonic Phase of Aorta Contraction Induced by Endogenic Vasoconstrictors in Rats

机译:Epac蛋白抑制剂ESI-09消除了大鼠内源性血管收缩剂引起的主动脉收缩的强直期

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摘要

It has been shown that the Epac1 and Epac2 protein inhibitor ESI-09 has no effect on the amplitude of contraction of aortic rings caused by the influence of serotonin, noradrenaline, or KCl depolarizing solution, but changes the kinetics of the contractile response. It was noted that in the presence of ESI-09 the curve of the relaxation phase in intact and deendothelized vessels moved to the left under the impact of serotonin or KCl and the phase of prolonged tonic contraction, which developed after the exposure to noradrenalin, was canceled. It was found that ESI-09 exerted different effects on the induced growth in the concentration of cytoplasmic Ca2+ in the aortic smooth muscle cells of rats depending on the agonist, whereas the selective inhibitor Epac2 ESI-05 has no effect on vascular contractility and calcium metabolism in the aortic smooth muscle of rats. The cAMP-independent participation of Epac1 in the formation of the contractile response to the influence of vasoconstrictor compounds was revealed.
机译:已经显示,Epac1和Epac2蛋白抑制剂ESI-09对由5-羟色胺,去甲肾上腺素或KCl去极化溶液的影响引起的主动脉环收缩幅度没有影响,但会改变收缩反应的动力学。值得注意的是,在存在ESI-09的情况下,在5-羟色胺或KCl的影响下,完整和去内皮化血管的松弛相曲线向左移动,并且在暴露于去甲肾上腺素后出现了强直收缩期。取消。结果发现,ESI-09对大鼠主动脉平滑肌细胞胞浆内Ca2 +浓度的影响取决于激动剂,而选择性抑制剂Epac2 ESI-05对血管收缩力和钙代谢没有影响。在大鼠的主动脉平滑肌中。 Epac1的依赖cAMP的参与参与了对血管收缩化合物影响的收缩反应的形成。

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  • 来源
    《Biology Bulletin》 |2017年第2期|179-186|共8页
  • 作者单位

    Sci Res Inst Gen Pathol & Pathophysiol, Ul Baltiiskaya 8, Moscow 125315, Russia;

    Sci Res Inst Gen Pathol & Pathophysiol, Ul Baltiiskaya 8, Moscow 125315, Russia;

    Koltzov Inst Dev Biol, Ul Vavilova 26, Moscow 119334, Russia;

    Koltzov Inst Dev Biol, Ul Vavilova 26, Moscow 119334, Russia;

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