Conclusions
It is possible to describe the characteristic electrical activities of single cells and groups of intestinal muscle cells in terms of slow waves and spikes, but these activities vary depending upon interactions with other cells (nerves, muscle layers, etc.). The mechanism underlying these cellular interactions is not yet understood, but it is possible to say that the activities of cells grouped in certain arrays cannot be deduced from the activities of component cells in isolation (e.g., longitudinal and circular muscle separate and together, circular muscle in very fine strips and in larger strips, resistance between 2 cells and across a single cell). It is possible to believe, although proof is lacking, that most interactions between muscle cells are electrical, although chemical interactions between nerve and muscle cells are probable. Whether or how slow waves in muscles affect nerves is unknown. How nerves or other structures susceptible to anoxia affect slow waves is also unknown. A complete discussion of the relationship between electrical and mechanical activity is beyond the scope of this paper, aside from the statement that slow waves usually trigger spikes and spikes trigger contraction. How slow waves exert control over muscle excitability to bring about the complex motility patterns of the intestine was not discussed; little is known.
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References
Burnstock, G., Holman, M. E., andProsser, C. L. Electrophysiology of smooth muscle.Physiol Rev 43:482, 1963.
Bülbring, E., andKuriyama, H. Effects of changes in the external sodium and calcium concentrations on spontaneous electrical activity in smooth muscle of guinea pig taenia coli.J Physiol (London)166:29, 1963.
Kosterlitz, H. W., andWatt, A. J. Adrenergic receptors in the guinea pig ileum.J Physiol (London)177:11, 1965.
Norberg, K. A. Adrenergic innervation of the intestinal wall studied by fluorescence microscopy.Int J Neuropharmacol 3:379, 1964.
Hollands, B. C. S., andVanov, S. Localization of catechol amines in visceral organs and ganglia of the rat, guinea pig and rabbit.Brit J Pharmacol 25:307, 1965.
Bennett, M. R., Burnstock, G., andHolman, M. E. Transmission from intramural inhibitory nerves to the smooth muscle of the guinea pig taenia coli.J Physiol (London)182:541, 1966.
Bennett, M. R., Burnstock, G., andHolman, M. E. Transmission from perivascular inhibitory nerves to the smooth muscle of the guinca pig taenia coli.J Physiol (London)182:527, 1966.
Gillespie, J. S. Spontaneous mechanical and electrical activity of stretched and unstretched intestinal smooth muscle cells and their response to sympathetic nerve stimulation.J Physiol (London)162:54, 1961.
Gonella, J. Étude de l'activite electrique des fibres musculaires longitudinale du duodenumin vivo. Action de la stimulation des nerfs vagues.C R Soc Biol (Paris)158:2409, 1964.
Gillespie, J. S. The electrical and mechanical responses of intestinal smooth muscle cells to stimulation of their extrinsic parasympathetic nerves.J Physiol (London)162:76, 1962.
Bülbring, E., Lin, R. C. Y., andSchofield, G. An investigation of the peristaltic reflex in relation to anatomical observations.Quart J Exp Physiol 43:26, 1958.
Bülbring, E., andLin, R. C. Y. The effect of intraluminal application of 5-hydroxy-tryptamine and 5-hydroxytryptophan on peristalsis; the local production of 5-HT and its release in relation to intraluminal pressure and propulsive activity. (London) 140:381, 1958.
Ginzel, K. H. Are mucosal nerve fibres essential for the peristaltic reflex?Nature 184:1235, 1959.
Boullin, D. J. Observations on the significance of 5-hydroxytryptamine in relation to the peristaltic reflex of the rat.Brit J Pharmacol 23:14, 1964.
Hukuhara, T., Nakayama, S., andNanba, R. The effect of 5-hydroxytryptamine upon the intestinal motility, especially with respect to the intestinal mucosal intrinsic reflex.J Jap Physiol 10:420, 1960.
Daniel, E. E. Further studies of the pharmacology of the pyloric region: Analysis of the effects of intra-arterial histamine, serotonin, phenyldiguanide, morphine and other drugs on the antrum and duodenal bulb.Canad J Physiol Pharmacol 44:981, 1966.
Kosterlitz, H. W., andLees, G. M. Pharmacological analysis of intrinsic intestinal reflexes.Pharmacol Rev 16:301, 1964.
Gershon, M. D., Deakontides, A. B., andRoss, L. L. Serotonin: synthesis and release from the myenteric plexus of the mouse intestine.Science 149:197, 1965.
Dewey, M. M., andBarr, L. Intercellular connection between smooth muscle cells: The nexus.Science 137:670, 1962.
Kobayashi, M., Nagai, T., andProsser, C. L. Electrical interaction between muscle layers of cat intestine.Amer J Physiol 211:1281, 1966.
Lane, B. P., andRhodin, J. A. G. Cellular interrelationships and electrical activity in two types of smooth muscle.J Ultrastruct Res 10:470, 1964.
Bülbring, E. Membrane potentials of smooth muscle fibres of the taenia coli of the guinea pig.J Physiol (London)125:301, 1954.
Holman, M. E. Membrane potentials recorded with high resistance microelectrodes: and the effects of changes in ionic environment on the electrical and mechanical activity of the smooth muscle of the taenia coli of the guinea pig.J Physiol (London)141:464, 1958.
Daniel, E. E., Honour, A. J., andBogoch, A. Electrical activity of the longitudinal muscle of dog small intestine studied in vivo using microelectrodes.Amer J Physiol 198:113, 1960.
Kuriyama, H. The influence of potassium sodium and chloride on the membrane potential of the smooth muscle of the taenia coli.J Physiol (London)166:15, 1963.
Bortoff, A. Slow potential variations of small intestines.Amer J Physiol 201:203, 1961.
Bortoff, A. Electrical activity of intestine recorded with pressure electrodes.Amer J Physiol 201:209, 1961.
Bortoff, A. Configuration of intestinal slow waves obtained by monopolar recording techniques.Amer J Physiol 213:157, 1967.
Daniel, E. E., Carlow, D. R., Wachter, B. T., Sutherland, W. H., andBogoch, A. Electrical activity of the small intestine.Gastroenterology 37:268, 1959.
Bozler, E. Electrophysiological studies on the motility of the gastrointestinal tract.Amer J Physiol 122:614, 1938.
Bozler, E. The action potentials of the stomach.Amer J Physiol 144:693, 1945.
Bozler, E. The relation of the action potential to mechanical activity in intestinal muscle.Amer J Physiol 146:496, 1946.
Armstrong, H. I. O., Milton, G. W., andSmith, A. W. M. Electropotential changes in the small intestine.J Physiol (London)131:147, 1956.
Haladay, D. A., Volk, H., andMandel, J. Electrical activity of the small intestine with special reference to the origin of rhythmicity.Amer J Physiol 195:505, 1958.
Daniel, E. E., Wachter, B. T., Honour, A. J., andBogoch, A. The relationship between electrical and mechanical activity of the small intestine of dog and man.Canad J Biochem 38:777, 1960.
Bass, P., Code, C. F., andLambert, E. H. Motor and electric activity of the duodenum.Amer J Physiol 201:287, 1961.
Bortoff, A. Electrical transmission of slow waves from longitudinal to circular intestinal muscle.Amer J Physiol 209:1254, 1965.
Christensen, J., Schedl, H. P., andClifton, J. A. The small intestinal basic electrical rhythm (BER) frequency gradient in normal men and in patients with a variety of diseases.Gastroenterology 50:301, 1966.
Bass, P., andWhiley, J. Effects of ligation and morphine on electric and motor activity of the duodenum of the dog.Amer J Physiol 208:908, 1965.
Tamai, T., andProsser, G. L. Differentiation of slow potentials and spikes in longitudinal muscle of cat intestine.Amer J Physiol 210:452, 1966.
Daniel, E. E. Effects of intra-arterial perfusions on electrical activity and electrolyte contents of dog small intestine.Canad J Physiol Pharmacol 43:551, 1965.
Daniel, E. E., andChapman, K. M. Electrical activity on the gastrointestinal tract as an indication of mechanical activity.Amer J Dig Dis 8:54, 1963.
Kobayashi, M., Prosser, C. L., andNagai, T. Electrical properties of intestinal muscle as measured intracellularly and extracellularly.Amer J Physiol 213:275, 1967.
Daniel, E. E. The electrical and contractile activity of the pyloric region in dogs and the effects of drugs.Gastroenterology 49:403, 1965.
Daniel, E. E. Electrical and contractile responses of the pyloric region to adrenergic and cholinergic drugs.Canad J Physiol Pharmacol 44:951, 1966.
Prosser, C. L., andSperelakis, N. Transmission in ganglion-free circular muscle from the cat intestine.Amer J Physiol 187:536, 1956.
Khin, J. Some mechanisms underlying electrical and mechanical activity of the dog small intestine. Thesis, University of Alberta, Edmonton, Alberta, 1967.
Nonomura, Y., Hotta, Y., andObashi, H. Tetrodotoxin and manganese ions: Effects on electrical activity and tension in taenia coli of guinea pig.Science 152:97, 1966.
Kuriyama, H., Osa, T., andToida, N. Effect of tetrodotoxin on smooth muscle cells of the guinea pig taenia coli.Brit J Pharmacol 27:366, 1966.
Kao, C. Y. Tetrodotoxin, saxitoxin and their significance in the study of excitation phenomena.Pharmacol Rev 18:997, 1966.
Van Harn, G. L. Responses of muscles of cat small intestine to autonomic nerve stimulation.Amer J Physiol 204:352, 1963.
Szurszewski, J. H. The relationship of the myenteric plexus to the electrical and mechanical activity of the small intestine in unanesthetized animals. Thesis presented at the University of Illinois, Urbana, Illinois.
Hukuhara, T., Sumi, J., andKotani, S. The role of the ganglion cells in the small intestine taken in the intestinal intrinsic reflex.J Jap Physiol 11:281, 1961.
Hukuhara, T., Kotani, S., andSato, G. Effects of destruction of intramural ganglion cells in colon motility; possible genesis of congenital megacolon.J Jap Physiol 11:635, 1961.
Hukuhara, T., Kotani, S., andSato, G. Comparative studies on the motility of the normal, denervated and aganglionic Thiry-loops.J Jap Physiol 12:348, 1962.
Nagai, T., andProsser, C. L. Patterns of conduction in smooth muscle.Amer J Physiol 204:910, 1963.
Nagai, T., andProsser, C. L. Electrical parameters of smooth muscle cells.Amer J Physiol 204:915, 1963.
Burnstock, G., andProsser, C. L. Conduction in smooth muscles: Comparative electrical properties.Amer J Physiol 199:553, 1960.
Barr, L. Transmembrane resistance of smooth muscle cells.Amer J Physiol 200:1251, 1961.
Barr, L. Propagation in vertebrate visceral smooth muscle.J Theor Biol 4:73, 1963.
Kuriyama, H., andTomita, T. The responses of single smooth muscle cells of guinea pig taenia coli to intracellularly applied currents and their effect on the spontaneous electrical activity.J Physiol (London) 178:270, 1965.
Tomita, T. Electrical responses of smooth muscle to external stimulation in hypertonic solution.J Physiol (London) 183:450, 1966.
Sperelakis, N., andTarr, M. Weak electrotonic interaction between neighboring visceral smooth muscle cells.Amer J Physiol 208:737, 1965.
Tomita, T. Membrane capacity and resistance of mammalian smooth muscle.J Theor Biol 12:216, 1966.
Vayo, H. W. Determination of the electrical parameters of vertebrate visceral smooth muscle.J Theor Biol 9:263, 1965.
Koide, F. T. The determination of the intercellular bridge resistance between smooth muscle cells.J Theor Biol 12:89, 1966.
Goodford, P. J., andHermansen, K. Sodium and potassium movements in the unstriated muscle of the guinea pig in taenia coli.J Physiol (London) 158:426, 1961.
Hellemans, J., Vantrappen, G., Valembois, P., Janssens, J., andVandenbroucke, J. The electrical activity of striated and smooth muscle of the esophagus.Amer J Dig Dis 13:320, 1968.
Daniel, E. E. Unpublished data.
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Daniel, E.E. The electrical activity of the alimentary tract. Digest Dis Sci 13, 297–319 (1968). https://doi.org/10.1007/BF02233006
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DOI: https://doi.org/10.1007/BF02233006