作者:Henry U. Bryant、David L. Nelson、Donald Button、Harlan W. Cole、Melvyn B. Baez、Virginia L. Lucaites、David B. Wainscott、Cecilia Whitesitt、Jon Reel、Richard Simon、Gary A. Koppel
DOI:10.1016/0024-3205(96)00449-3
日期:1996.9
is prevented by 5-HT2 antagonists such as ketanserin or mianserin. Here we report the effects of a new class of aminoguanidine 5-HT2 antagonists, with relative selectivity for 5-HT2A receptors which are potent inhibitors of 5-HT-induced paw edema in the rat. Radioligand binding studies with 125I DOI on human 5-HT2A and 5-HT2C receptors and with 3H-5-HT on human 5-HT2B receptors demonstrated that, LY314228
血清素(5-HT)的局部递送通过增加的液体外渗在软组织中产生快速的水肿反应,而5-HT2拮抗剂(如酮色林或米安色林)阻止了这种现象。在这里,我们报告了新型的氨基胍5-HT2拮抗剂的作用,对5-HT2A受体具有相对选择性,5-HT2A受体是大鼠中5-HT诱导的爪水肿的有效抑制剂。用125 I DOI对人5-HT2A和5-HT2C受体以及对3H-5-HT对人5-HT2B受体的放射性配体结合研究表明,LY314228和LY320954对5-HT2A受体表现出一定的选择性。与其他5-HT2受体亚型的结合相比,LY314228对5-HT2A的亲和力比5-HT2B的亲和力高18.6倍,对5-HT2C的亲和力则高2.6倍。LY320954对5-HT2A位点显示出相似的偏好。两种化合物均能抑制5-HT诱导的大鼠足肿胀,ED50为6.4和4.8 mg / kg(分别针对LY314228和LY320954)。这些研究为5-HT