Conclusions
Our conclusions on cat colonic muscularis mucosae can be summarized as follows: The smooth muscle containsα-excitatory andβ-inhibitory receptors. Both adrenergic and nonadrenergic inhibitory nervous structures, which can be excited through nicotinic and muscarinic receptors, are present. The possible role of 5-HT in permitting nonadrenergic inhibitory responses is suggested. In the colonic muscularis mucosae, the apparent lack of cholinergic motor neurones has been demonstrated.
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References
Onori L, Greco V, Fabbrini A, et al.: Microscopic patterns of the colonic mucosal surface. Investigations in human subjects and experimental animals. Experientia 24: 1252, 1968
Bartlet AL, Hassan T: Some actions of histamine and 5-hydroxytryptamine on isolated chicken oesophagus. Brit J Pharmacol 32:156, 1968
Burn JH, Gibbons WR: The release of noradrenaline from sympathetic fibres in relation to calcium concentration. J Physiol 181:214, 1965
Falck B: Observation on the possibilities of the cellular localization of monoamines by a fluorescence method. Acta Physiol Scand 56:Suppl:197, 1962
King CE, Glass LC, Towsend SE: The circular component of the muscularis mucosae of the small intestine of the dog. Amer J Physiol 148:667, 1947
Walder DN: The muscularis mucosae of the human stomach. J Physiol 120:365, 1953
Ellis S, Rasmussen H: The atropine-fast nicotine stimulation of the rabbit's intestine and of the muscularis mucosae of the dog's intestine. J Pharmacol Exp Ther 103:259, 1951
Bianchi C, Beani L, Frigo GM, et al: Further evidence for the presence of non-adrenergic inhibitory structures in the guinea pig colon. Europ J Pharmacol 4:51, 1968
Filogamo G, Muti R: A propos d'une technique de dénervation du canal alimentaire au moyen du froid. Compt Rend Ass Anat 141:873, 1968
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Supported by CNR Grant No. 115-123-1357.
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Onori, L., Friedmann, C.A., Frigo, G.M. et al. Effects of catecholamines, nicotine, acetylcholine and potassium on the mechanical activity of the colonic muscularis mucosae in the cat. Digest Dis Sci 16, 689–692 (1971). https://doi.org/10.1007/BF02239590
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DOI: https://doi.org/10.1007/BF02239590