Matsubara T, Moskowitz M A, Byun B
Stroke Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston 02114.
Br J Pharmacol. 1991 Sep;104(1):3-4. doi: 10.1111/j.1476-5381.1991.tb12374.x.
Pretreatment with CP-93,129 blocked plasma extravasation in rat dura mater induced by electrical trigeminal ganglion stimulation when administered at greater than or equal to 140 nmol kg-1, i.v. but did not affect plasma leakage in guinea-pig at 460 or 1400 nmol kg-1. Sumatriptan, a 5-HT1D-like receptor agonist, blocked plasma extravasation in the guinea-pig model when administered at 7 nmol kg-1. In as much as CP-93,129 binds with micromolar affinities to 5-HT1A, 5-HT1C, 5-HT1D, and 5-HT2 recognition sites, and with nanomolar affinity to the 5-HT1B receptor subtype, blockade of plasma extravasation in the rat dura mater may be mediated by 5-HT1B receptors whereas the 5-HT1D receptor may be more relevant to the guinea-pig.
当静脉注射剂量大于或等于140 nmol/kg时,CP - 93,129预处理可阻断电刺激三叉神经节诱导的大鼠硬脑膜血浆外渗,但在460或1400 nmol/kg时对豚鼠的血浆渗漏没有影响。舒马曲坦是一种5 - HT1D样受体激动剂,当以7 nmol/kg给药时,可阻断豚鼠模型中的血浆外渗。由于CP - 93,129以微摩尔亲和力与5 - HT1A、5 - HT1C、5 - HT1D和5 - HT2识别位点结合,并以纳摩尔亲和力与5 - HT1B受体亚型结合,大鼠硬脑膜中血浆外渗的阻断可能由5 - HT1B受体介导,而5 - HT1D受体可能与豚鼠的关系更密切。