Ciclazindol inhibits ATP-sensitive K+ channels and stimulates insulin secretion in CRI-G1 insulin-secreting cells

Lee, K., Khan, R.N., Rowe, I.C. , Ozanne, S.E., Hall, A.C., Papadakis, E., Hales, C.N. and Ashford, M.L.J. (1996) Ciclazindol inhibits ATP-sensitive K+ channels and stimulates insulin secretion in CRI-G1 insulin-secreting cells. Molecular Pharmacology, 49(4), pp. 715-720. (PMID:8609901)

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Publisher's URL: https://molpharm.aspetjournals.org/content/49/4/715

Abstract

Ciclazindol, an anorectic drug, was shown to inhibit ATP-sensitive K+ (K(ATP)) channel currents and stimulate insulin secretion from CRI-G1 insulin-secreting cells. In contrast, the structurally related anorectic agent mazindol and the amphetamine-based anorectic compounds diethylpropion, fenfluramine, and phentermine had no effect on K(ATP) channel activity in this cell line. Similarly, cicliazindol elicited insulin secretion from CRI-G1 cells, whereas mazindol had no secretagogue action. The mechanism by which ciclazindol acts to inhibit K(ATP) channel activity is different than that of the sulfonylureas as ciclazindol is effective after procedures that decouple the sulfonylurea receptor from the K(ATP) channel. In agreement with this finding, ciclazindol failed to displace [3H]glibenclamide from CRI-G1 microsomal membranes. Further experiments demonstrated that ciclazindol has no significant effect on voltage-activated currents in this cell line.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Rowe, Dr Iain
Authors: Lee, K., Khan, R.N., Rowe, I.C., Ozanne, S.E., Hall, A.C., Papadakis, E., Hales, C.N., and Ashford, M.L.J.
College/School:College of Medical Veterinary and Life Sciences > School of Life Sciences
Journal Name:Molecular Pharmacology
Publisher:American Society for Pharmacology and Experimental Therapeutics
ISSN:0026-895X
ISSN (Online):1521-0111

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