首页> 外文期刊>Biology Bulletin >Agonist of Serotonin 5HT1A-receptors 8-OH-DPAT Increases the Force of Contraction of Rat Aorta and Mesenteric Artery in the Presence of Endothelin-1 or Vasopressin and Causes Relaxation of the Vessels Preconstricted with Noradrenaline
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Agonist of Serotonin 5HT1A-receptors 8-OH-DPAT Increases the Force of Contraction of Rat Aorta and Mesenteric Artery in the Presence of Endothelin-1 or Vasopressin and Causes Relaxation of the Vessels Preconstricted with Noradrenaline

机译:血清素5HT1A受体激动剂8-OH-DPAT在存在内皮素-1或血管加压素的情况下增加大鼠主动脉和肠系膜动脉的收缩力,并导致去甲肾上腺素预收缩的血管松弛

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摘要

Agonist 5HT1A serotonin receptors 8-OH-DPAT at 70-80% in rats relax the isolated aorta and mesenteric artery, precollapsed with noradrenaline. An inhibitor of NO-synthase L-NAME two or more times suppresses vasodilatatornyh reaction in response to the effect of 8-OH-DPAT. The addition of 8-OH-DPAT to the aorta in a state of rest or precollapsed with endothelin-1 or vasopressin causes an increase in apower reduction. A blocker of α_1-adrenoceptors prazosin almost completely suppresses the aorta collapse reaction to the effect of 8-OH-DPAT in the absence of vasoconstrictives, but does not affect the contraction force in response to 8-OH-DPAT of the aorta in the presence of endothelin-1 or vasopressin and does not shift the curve of the dependence of ferce collapse on the concentration of 8-OH-DPAT. Our data show the existence in the rat aorta of vasodilator and vasoconstrictive 5HT1A-receptors.
机译:在大鼠中激动剂5HT1A血清素受体8-OH-DPAT的含量为70-80%,可放松分离的主动脉和肠系膜动脉,并与去甲肾上腺素合用。 NO合酶L-NAME的抑制剂两次或多次抑制响应8-OH-DPAT作用的血管扩张反应。在静息状态下或与内皮素-1或加压素一起倒塌的状态下向主动脉中添加8-OH-DPAT会导致功率降低的增加。在不存在血管收缩的情况下,α_1-肾上腺素受体哌唑嗪的阻滞剂几乎完全抑制了对8-OH-DPAT的主动脉塌陷反应,但在存在主动脉的8-OH-DPAT时不影响收缩力内皮素-1或血管加压素的表达没有变化,并且没有改变崩解对8-OH-DPAT浓度的依赖性曲线。我们的数据显示在大鼠主动脉中存在血管扩张剂和血管收缩性5HT1A受体。

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  • 来源
    《Biology Bulletin》 |2010年第1期|p.35-43|共9页
  • 作者单位

    Institute of General Pathology, Russian Academy of Medical Sciences, Baltiiskaya ul. 8, Moscow, 125315 Russia;

    Koltsov Institute of Developmental Biology, Russian Academy of Sciences, ul. Vavilova 26, Moscow, 119334 Russia;

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