Comparative Aspect on the Innervation of Submandibular Glands in Cat and Rabbit; an Electron Microscopic Study

Kagayama, Manabu; Nishiyama, A.

doi:10.1620/tjem.108.179

Cited by 15 publications

(2 citation statements)

References 28 publications

(24 reference statements)

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“…This, however, is still a long latency. Creed & Wilson (1969) (Creed & Wilson, 1969;Garrett, 1972;Kagayama & Nishiyama, 1972;Garrett, 1974). From our knowledge of the time course of release of ACh from nerve endings at the frog neuromuscular junction and diffusion times for ACh over short distances (Katz & Miledi, 1965;del Castillo & Katz, 1955) it seems unlikely that more than a few msec of the 100 msec delay at the acinar neuro-effector site can be accounted for by the release process and the diffusion time.…”

Section: Discussionmentioning

confidence: 99%

“…In the cat submaxillary gland it is now generally agreed that there is a 'close' innervation of acinar cells by parasympathetic nerve fibres, this has been termed an intra-acinar or epithelial neuro-effector site. This term is used when an axon containing vesicles lies beneath the basement 170 SECRETORY POTENTIAL OF SUBMAXILLARY GLAND 171 membrane and is in intimate contact with the adjacent parenchymal cells, separated by a gap of 200 A or less (Creed & Wilson, 1969;Garrett, 1972;Kagayama & Nishiyama, 1972;Garrett, 1974). From our knowledge of the time course of release of ACh from nerve endings at the frog neuromuscular junction and diffusion times for ACh over short distances (Katz & Miledi, 1965;del Castillo & Katz, 1955) it seems unlikely that more than a few msec of the 100 msec delay at the acinar neuro-effector site can be accounted for by the release process and the diffusion time.…”

Section: Discussionmentioning

confidence: 99%

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Membrane potential and input resistance in acinar cells from cat and rabbit submaxillary glands in vivo: effects of autonomic nerve stimulation

Kagayama¹,

Nishiyama²

1974

The Journal of Physiology

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SUMMARY1. Membrane potential and input resistance measurements were made from acinar cells of cat and rabbit submaxillary glands in vivo, using intracellular glass micro-electrodes.2. The mean resting cell membrane potential was higher than previously reported, but ranged widely from -15 to -80 mV.3. Single shock electrical stimulation of the parasympathetic nerve fibres evoked characteristic potential changes. In some cases monophasic hyperpolarizations, in others biphasic responses (depolarization -hyperpolarization) were observed.4. The latency of the hyperpolarizing response was considerably longer (300-550 msec) than the latency of the biphasic response (about 150 msec).5. Hyperpolarizing and biphasic responses could be observed in the same cell at different levels of membrane potential. The initial depolarization of the biphasic response was dependent on the magnitude of the resting potential in such a manner that it was very small or absent at the lowest potentials and increased gradually with increasing level of the resting potential.6. Single-shock stimulation of the sympathetic nerve fibres to the gland did not evoke any response. In the cat, repetitive stimulation evoked hyperpolarizing or biphasic responses similar to those seen after repetitive stimulation of the parasympathetic nerve fibres. In the rabbit small hyperpolarizations were seen in a few cells only; mostly there was no response. Repetitive stimulation of the parasympathetic nerve fibres to

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Membrane potential and input resistance in acinar cells from cat and rabbit submaxillary glands in vivo: effects of autonomic nerve stimulation

Kagayama¹,

Nishiyama²

1974

The Journal of Physiology

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Morphology and histochemistry of the mandibular gland of the australian brush‐tail possum Trichosurus vulpecula (Marsupialia)

1977

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A histological, ultrastructural and histochemical study of the mandibular gland of the Australian possum Trichosurus vulpecula revealed essentially similar features as those described earlier for the mandibular gland of the taxonomically relatively unrelated American opossum Didelphis. The secretory endpieces consist of a branched tubular part, composed of serous cells whose secretion granules contain neutral glycoproteins, and terminal acini, consisting of seromucous cells containing small amounts of sialomucins. Relatively short intercalated ducts lead to striated ducts of variable ultrastructural appearance. The striated ducts run in bundles in the center of each sublobule of the gland. The possible functional significance of the abundance and variability in ultrastructure of the striated ducts is discussed.

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Transport in Salivary and Salt Glands

Young¹,

Lennep²

1979

Transport Organs

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Comparative Aspect on the Innervation of Submandibular Glands in Cat and Rabbit; an Electron Microscopic Study

Cited by 15 publications

References 28 publications

Membrane potential and input resistance in acinar cells from cat and rabbit submaxillary glands in vivo: effects of autonomic nerve stimulation

Membrane potential and input resistance in acinar cells from cat and rabbit submaxillary glands in vivo: effects of autonomic nerve stimulation

Morphology and histochemistry of the mandibular gland of the australian brush‐tail possum Trichosurus vulpecula (Marsupialia)

Transport in Salivary and Salt Glands

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