To investigate the function of the muscarinic cholinergic receptor (mAchR) in narcolepsy and the effects of pharmacotherapy on mAchRs. Muscarinic neural transmission serves as the main executive system in REM sleep. Studies in canine narcolepsy reported an increase in mAchRs
Lowering temperature from 37 degrees C to 22, 18, and 14 degrees C triggered automaticity of smooth longitudinal muscle of guinea pig isolated ileum. The amplitude of the hypothermia-induced automaticity was dependent on the degree of temperature drop: the greater
Research communications in chemical pathology and pharmacology, 55(2), 275-278 (1987-02-01)
The responsiveness of the cholinergic receptor (ChR) of the longitudinal muscle of guinea-pig isolated ileum was characterized by determining the ED50 of acetylcholine (ACh) and pA2 of mepenzolate (MPZ) in tissues from animals of different ages. The ages of guinea
Research communications in chemical pathology and pharmacology, 36(3), 503-506 (1982-06-01)
The mydriatic effects of mepenzolate, a quarternary antimuscarinic agent, has been investigated and compared with those of atropine by pupillographic analysis in rabbits. The time-response curve for the onset of action for the agents (half-time, ca.5 min) was the same
Journal of cardiovascular pharmacology, 6(6), 1148-1155 (1984-11-01)
The possible interaction between the muscarinic receptor and the antiarrythmic drug amiodarone was studied physiologically in the guinea pig ileum, as well as by competition binding experiments in rat brain and cardiac tissues, using the highly specific tritiated muscarinic antagonist
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