RT info:eu-repo/semantics/article T1 Synthesis and pharmacology of alkanediguanidinium compounds that block the neuronal nicotinic acetylcholine receptor A1 Villarroya, Mercedes A1 Gandía, Luis A1 López, Manuela G. A1 García, Antonio G. A1 Cueto, Sénida A1 García Navío, José Luis A1 Álvarez-Builla Gómez, Julio K1 Bovine chromaffin cells K1 Calcium channels K1 FTX K1 Separation K1 Toxin K1 Biochemistry & Molecular Biology K1 Ciencia K1 Química orgánica K1 Science K1 Chemistry, organic AB Taking as models the polyamine toxin fraction FTX from the funnel-web spider venom, and the guanidinium moiety of guanethidine, a series of azaalkane-1,omega-diguanidinium salts were obtained. Some of them blocked ion fluxes through the neuronal nicotinic receptors for acetylcholine (nAChR). The blockade was exerted at submicromolar concentrations, suggesting a highly selective interaction with the nAChR. In fact, the active compounds on the nAChR ion channel did not recognize the voltage-dependent Na+ or Ca2+ channels of bovine adrenal chromaffin cells. Therefore, these compounds may be useful tools to clarify the functions of nAChR receptors in the central and peripheral nervous systems. PB Pergamon SN 0968-0896 YR 1996 FD 1996 LK http://hdl.handle.net/10017/3513 UL http://hdl.handle.net/10017/3513 LA eng NO Fundación Ramón Areces DS MINDS@UW RD 29-abr-2024