新型高亲和力5-HT(1B/1D)受体配体frov曲普坦在人离体基底动脉和冠状动脉中的作用。
文章的细节
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引用
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帕森斯AA,拉瓦尔P,史密斯S,蒂尔福德N,金FD,考曼AJ,亨特J
新型高亲和力5-HT(1B/1D)受体配体frov曲普坦在人离体基底动脉和冠状动脉中的作用。
《心血管药物杂志》1998 8月;32(2):220-4。
- PubMed ID
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9700983 (PubMed视图]
- 摘要
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研究了新型高亲和力5-羟色胺(5-HT(1B/1D))配体frov曲普坦(原VML 251/SB-209509)在去除内皮的人离体基底动脉和冠状动脉中的收缩作用。基底动脉取自死后,冠状动脉取自接受心脏移植的患者(受者)或不适合移植的供体心脏。frov曲普利坦在离体基底动脉是一种有效的收缩剂,其-log平均有效浓度(EC50)值为7.86 +/- 0.07,相对于5-HT的本征活性为1.25 +/- 0.10 (n = 4)。frov曲普利坦的效力是舒马曲坦的8.5倍,其-log EC50值为6.93 +/- 0.09,本征活性为11.1 +/- 0.08 (n = 4)。frov曲普坦在受体(n = 7)和供体(n = 3)动脉中产生收缩,-log EC50值分别为7.38 +/- 0.12和7.81 +/- 0.2。frov曲普坦的相对收缩度低于5-HT,相对内在活性分别为0.42 +/- 0.06和0.40 +/- 0.09。舒马曲坦使人受体和供体动脉收缩,-log EC50值(内在活性)为6.57 +/- 0.13 (0.79 +/- 0.27;N = 6)和7.35 (1.41;N = 2)。此外,frov曲普坦在冠状动脉中有明显的钟形反应,在某些组织中,当浓度为>6 microM时出现松弛。相比之下,舒马曲坦或5-HT没有明显的钟形浓度-响应曲线。 Threshold concentrations for frovatriptan-induced contractions were also different between basilar (>2 nM) and coronary arteries (>20 nM). No separation of threshold activity was observed with sumatriptan or 5-HT. These data show that frovatriptan produces constriction of human isolated basilar and coronary arteries. However, frovatriptan produces a complex pharmacologic response in the coronary artery, with threshold contractile activity requiring approximately 10-fold greater concentrations of agonist than in the basilar artery. Frovatriptan also shows a differential pharmacologic profile compared with sumatriptan in coronary arteries, with reversal of tone predominating at high concentration.
引用本文的药物库数据
- 药物靶点
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药物 目标 种类 生物 药理作用 行动 Frovatriptan 5-羟色胺受体1B 蛋白质 人类 是的受体激动剂细节 Frovatriptan 5-羟色胺受体1D 蛋白质 人类 是的受体激动剂细节