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5-羟色胺在化合物48/80对大鼠股血管的血管收缩作用中的作用。

Role of 5-hydroxytryptamine in the vasoconstrictor action of compound 48/80 in the rat femoral vasculature.

作者信息

Sakai K

出版信息

Br J Pharmacol. 1979 Mar;65(3):363-6. doi: 10.1111/j.1476-5381.1979.tb07839.x.

Abstract
  1. The effect of compound 48/80 on the rat femoral vasculature was examined by means of a cross-circulation technique. 2. Intra-arterial injection of increasing doses (1.5 to 15 microgram) of compound 48/80 caused dose-dependent vasoconstriction preceded by transient vasodilatation. The vasoconstriction was significantly reduced in reserpine-treated preparations and converted to vasodilatation by methysergide. 3. When the vasoconstrictor response to a large dose (300 microgram) of adenosine was abolished by repeated administration, the response to compound 48/80 remained unaltered. 4. The present results indicate that the femoral arterial vasoconstriction by compound 48/80 in the rat is mediated by the release of 5-hydroxytryptamine (5-HT); this 5-HT may be liberated from a different storage site from that released by adenosine.
摘要
  1. 采用交叉循环技术研究了化合物48/80对大鼠股血管的作用。2. 动脉内注射递增剂量(1.5至15微克)的化合物48/80会引起剂量依赖性血管收缩,之前有短暂的血管舒张。在利血平处理的制剂中,血管收缩明显减弱,而麦角新碱可将其转变为血管舒张。3. 当通过反复给药消除对大剂量(300微克)腺苷的血管收缩反应时,对化合物48/80的反应保持不变。4. 目前的结果表明,大鼠中化合物48/80引起的股动脉血管收缩是由5-羟色胺(5-HT)的释放介导的;这种5-HT可能从与腺苷释放不同的储存部位释放出来。

相似文献

本文引用的文献

1
Compound 48/80: a potent histamine liberator.化合物48/80:一种强效组胺释放剂。
Br J Pharmacol Chemother. 1951 Sep;6(3):499-508. doi: 10.1111/j.1476-5381.1951.tb00661.x.
7
Mechanisms of histamine release by compound 48-80.化合物48-80释放组胺的机制。
Br J Pharmacol. 1970 Jan;38(1):253-62. doi: 10.1111/j.1476-5381.1970.tb10354.x.

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