<i>N-n</i>-Alkylnicotinium Analogs, a Novel Class of Nicotinic Receptor Antagonists: Interaction with α4β2* and α7* Neuronal Nicotinic Receptors
作者:Lincoln H. Wilkins、Vladimir P. Grinevich、Joshua T. Ayers、Peter A. Crooks、Linda P. Dwoskin
DOI:10.1124/jpet.102.043349
日期:2003.1.1
subtype, with the exception of N-n-octylnicotinium iodide (NONI). The most potent analog was N-n-decylnicotinium iodide (NDNI; Ki = 90 nM). In contrast, none of the analogs in this series exhibited high affinity for the [3H]methyllycaconitine binding site, thus indicating low affinity for the alpha7* nAChR. The C8 analog, NONI, had low affinity for S-(-)-[3H]nicotine binding sites but was a potent inhibitor
当前的研究表明,具有从1至12个碳原子增加的正烷基链长度的Nn-烷基烟碱类似物具有对大鼠纹状体膜中S-(-)-[3H]烟碱结合位点的不同亲和力(Ki = 90 nM-20 microM)。 。观察到线性关系,从而增加N-烷基链长提供了对α4beta2*烟碱乙酰胆碱受体(nAChR)亚型的亲和力,但Nn-辛基烟碱碘化物(NONI)除外。最有效的类似物是碘化N-癸基烟碱(NDNI; Ki = 90 nM)。相反,该系列中没有类似物对[3H]甲基lycaconitine结合位点表现出高亲和力,因此表明对α7* nAChR的亲和力低。C8类似物NONI 对S-(-)-[3H]烟碱结合位点具有低亲和力,但是S-(-)-烟碱诱发的[3H]多巴胺(DA)从融合的纹状体切片溢出的有效抑制剂(IC50 = 0.62 microM),从而证明了对介导S-(-)-尼古丁诱发的[3H] DA溢出的nAChR亚型的