dihydroergotoxine has been researched along with benzohexonium* in 3 studies
3 other study(ies) available for dihydroergotoxine and benzohexonium
| Article | Year |
|---|---|
Mechanism for the inhibition of contractile activity of the gastric antrum and pylorus in rabbits during psychogenic stress.
Psychogenic stress in rabbits (fixation to a frame) was accompanied by the inhibition of contractile activity of the gastric antrum and pylorus. These changes persisted during blockade of muscarinic receptors, nicotinic receptors, alpha(2)-adrenoceptors, and beta(1)/beta(2) adrenoceptors. A stress-induced decrease in gastric motor activity was mediated by the nonadrenergic noncholinergic mechanism. It resulted from the influence of a hormonal stress factor on the stomach, which was probably realized through nonadrenergic inhibitory neurons of the enteric nervous system. Topics: Adrenergic alpha-2 Receptor Antagonists; Adrenergic alpha-Antagonists; Adrenergic beta-Antagonists; Animals; Dihydroergotoxine; Ganglionic Blockers; Gastrointestinal Motility; Hexamethonium Compounds; Male; Muscarinic Antagonists; Muscle Contraction; Muscle, Smooth; Oxyphenonium; Propranolol; Pyloric Antrum; Pylorus; Rabbits; Receptors, Adrenergic, beta; Receptors, Muscarinic; Receptors, Nicotinic; Stress, Psychological; Yohimbine | 2009 |
[The excitatory effects of stimulation of the presynaptic alpha-adrenoreceptors in the ileum of non-narcotized rabbits].
Topics: Action Potentials; Animals; Atropine; Dihydroergotoxine; Drug Interactions; Electrodes, Implanted; Ganglionic Blockers; Hexamethonium Compounds; Ileum; Male; Phenylephrine; Rabbits; Receptors, Adrenergic, alpha; Receptors, Presynaptic; Stimulation, Chemical | 1994 |
[The effect of alpha-adrenoreceptor stimulation and blockade on the myoelectrical activity of the small intestine and pyloric sphincter].
The administration of mesaton enhanced contractile activity of pyloric sphincter and diminished it in the duodenum in rabbits. The blockade of alpha-adrenoreceptors with dihydroergotoxin abolished the myoelectrical activity in the pyloric sphincter and sharply enhanced it in the duodenum. Both these effects could occur in the blockade and in the stimulation of alpha-adrenoreceptors of the ileum. The administration of mesaton against the background of the blockade of H-cholinoreceptors with bensohexonium never enhanced myoelectrical activity of the pyloric sphincter. The data obtained suggest different roles of alpha-adrenoreceptors in the pyloric sphincter, duodenum and ileum. The activating alpha-adrenoreceptors of the pyloric sphincter can be found on the neurons of the myenteric plexus. Topics: Action Potentials; Animals; Dihydroergotoxine; Dose-Response Relationship, Drug; Electrodes, Implanted; Hexamethonium Compounds; Intestine, Small; Muscle, Smooth; Phenylephrine; Pylorus; Rabbits; Receptors, Adrenergic, alpha; Time Factors | 1990 |