Regulation of acetylcholine receptor desensitization in mouse myotubes by cytosolic cyclic AMP.
Cell Signal
; 2(4): 347-52, 1990.
Article
en En
| MEDLINE
| ID: mdl-2174690
ABSTRACT
Whole-cell currents activated by bath applications of acetylcholine (ACh) (10-30 microM) were recorded from patch-clamped myotubes of the mouse C2 cell line. Increasing concentrations of forskolin caused a dose-dependent fast decay of ACh-activated currents as compared to the long-lasting ACh-currents in control cells. The forskolin-induced modulation of nicotinic ACh receptor (nAChR) desensitization was proportional to the drug-induced elevation in the cyclic AMP (cAMP) cellular content. Furthermore, an increase in the rate of decay of the ACh-current response, which paralleled an elevation in cAMP cellular content, was caused by treatment with a calcitonin gene-related peptide (1 microM), 8-Br-cAMP (0.5 mM), or by loading the myotubes with cAMP. These results therefore indicate that the desensitization of nAChR is a cAMP-related process in C2-myotubes.
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Banco de datos:
MEDLINE
Asunto principal:
Receptores Colinérgicos
/
AMP Cíclico
/
Músculos
Límite:
Animals
Idioma:
En
Año:
1990
Tipo del documento:
Article