Electron microscopy of the connective tissues between longitudinal and circular muscle of small intestine of cat

Taylor, A. B.; Kreulen, David L.; Prosser, C. Ladd

doi:10.1002/aja.1001500305

Cited by 55 publications

(22 citation statements)

References 24 publications

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“…The arrow indicates one ICC. Sentithin section, toluidine blue, x 800. belong to the connective-tissue family, as suggested by Taylor et al [1977], Gabella [1979] and Komuro [1982].…”

Section: Discussionmentioning

confidence: 99%

Cytodifferentiation of the Interstitial Cells of Cajal of Mouse Colonic Circular Muscle Layer

Pellegrini¹

1987

Cells Tissues Organs

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Cytodifferentiation of the interstitial cells of Cajal related to the plexus entericus extremus and located on the inner face of the circular muscle layer of the mouse colon was studied in fetuses at term, unfed neonates, suckling and weaning young animals. In fetuses at term, the interstitial cells of Cajal are not found and their precursor cells are not identifiable among the cells present in the submucosal area facing the circular muscle layer, i.e., undifferentiated cells (mainly close to nerve fibers) and fibroblast-like cells (contacting each other and the developing smooth-muscle cells). Cells putatively considered as precursors of interstitial cells of Cajal, fibroblast-like cells rich in mitochondria, are present in unfed neonates (in small numbers) and in suckling animals (in large numbers). Differentiating interstitial cells of Cajal are undoubtedly recognizable during the second week of postnatal life (suckling period). Some of them have mixed fibroblastic- and interstitial-cell features and some have many interstitial-cell features. Both these cell types are already in contact with each other and differentiating and differentiated smooth-muscle cells. The undifferentiated cells, still present in unfed neonates, envelop the nerve fibers and differentiate as Schwann cells during the suckling period. During this period, as the nerve endings of the plexus entericus extremus develop, they immediately contact the differentiating interstitial cells of Cajal. During the weaning period, these cells are quite well differentiated although they do not have the same morphology as in adult animals before 30 days of age. Concomitantly, the nerve endings of the plexus entericus extremus contain an increasing number of synaptic vesicles.

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“…The arrow indicates one ICC. Sentithin section, toluidine blue, x 800. belong to the connective-tissue family, as suggested by Taylor et al [1977], Gabella [1979] and Komuro [1982].…”

Section: Discussionmentioning

confidence: 99%

Cytodifferentiation of the Interstitial Cells of Cajal of Mouse Colonic Circular Muscle Layer

Pellegrini¹

1987

Cells Tissues Organs

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“…There must be relatively low-resistance current paths between the two muscle layers. Electron microscopic observations reveal an abundance of interstitial cells and fibrocytes in the region between the muscle layers which make junctional contacts with muscle fibres of each layer and with each other (Taylor, Kreulen & Prosser, 1977). Since fibroblasts can serve as passive conductors between clusters of embryonic heart fibres, (Hyde, Blondel, Matter, Cheneval, Filloux & Girandier, 1969), it is probable that interstitial cells and fibrocytes provide low-resistance paths between the intestinal muscle layers.…”

Section: Discussionmentioning

confidence: 99%

Interaction between longitudinal and circular muscle in intestine of cat

Connor¹,

Kreulen²,

Prosser³

et al. 1977

The Journal of Physiology

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“…In the cat, slow waves recorded in longitudinal muscle and in cells between the two muscle layers were not different, suggesting strong electrical coupling. Indeed, anatomical studies have shown the presence of fibroblasts (Taylor, Kreulen & Prosser, 1977), interstitial cells (Thuneberg, 1982) and smooth muscle cells (Kobayashi et al 1967) connecting the two muscle layers; this structural interconnexion may provide a functional interaction. Such interconnexions have not been observed in the canine gastrointestinal tract (Daniel & Sarna, 1978).…”

Section: Discussionmentioning

confidence: 99%

Electrophysiology of smooth muscle of the small intestine of some mammals.

Hara¹,

Kubota²,

Szurszewski³

1986

The Journal of Physiology

182

121

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SUMMARY1. Intracellular recordings were made from cells located in the longitudinal, inner and outer circular muscle layers of the dog, cat, rabbit, opossum and human small intestine.2. In whole-thickness preparations in all five species, longitudinal muscle cells generated slow waves and spikes. However, in isolated longitudinal muscle preparations, all cells tested were electrically silent.3. In whole-thickness and in isolated preparations, cells in the inner circular muscle layer generated spontaneous spikes superimposed on slow potentials. However, the occurrence of spikes and slow potentials was more regular in whole-thickness preparations.4. In whole-thickness preparations, cells in the outer circular muscle layer generated slow waves which were coupled with phasic contractions. However, in isolated outer circular muscle preparations, all cells tested were electrically silent and spontaneous phasic contractions were absent.5. In whole-thickness preparations, non-neural cells located on the serosal side of the outer circular muscle layer generated slow waves.6. The data suggest that spontaneous slow waves of the small intestine of the dog, cat, rabbit, opossum and human are generated in non-neural cells located between the longitudinal and outer circular muscle layer and by non-neural cells located between the outer and inner circular muscle layers.

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Electron microscopy of the connective tissues between longitudinal and circular muscle of small intestine of cat

Cited by 55 publications

References 24 publications

Cytodifferentiation of the Interstitial Cells of Cajal of Mouse Colonic Circular Muscle Layer

Cytodifferentiation of the Interstitial Cells of Cajal of Mouse Colonic Circular Muscle Layer

Interaction between longitudinal and circular muscle in intestine of cat

Electrophysiology of smooth muscle of the small intestine of some mammals.

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