Gap junctional coupling modulates secretion of exocrine pancreas.

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Gap junctional coupling modulates secretion of exocrine pancreas.

Dispersed pancreatic acini were studied to assess the function of junctional coupling between adult secretory cells. Nonstimulated control cells were extensively coupled to their neighbors throughout each acinus. Addition of heptanol caused their uncoupling and increased their basal amylase release. Neurotensin, secretin, and vasoactive intestinal peptide (VIP) stimulated amylase secretion with...

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We have studied the onset of secretory responsiveness to cholecystokinin (CCK) during development of the rat exocrine pancreas. Although acinar cells of the fetal pancreas (1 d before birth) are filled with zymogen granules containing the secretory protein, a-amylase, the rate of amylase secretion from pancreatic lobutes incubated in vitro was not increased in response to CCK. In contrast, the ...

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Stimulus-secretion coupling in the developing exocrine pancreas: secretory responsiveness to cholecystokinin

We have studied the onset of secretory responsiveness to cholecystokinin (CCK) during development of the rat exocrine pancreas. Although acinar cells of the fetal pancreas (1 d before birth) are filled with zymogen granules containing the secretory protein, alpha-amylase, the rate of amylase secretion from pancreatic lobules incubated in vitro was not increased in response to CCK. In contrast, ...

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Unstimulated Secretion of Protein from Rat Exocrine Pancreas Cells

Our earlier work demonstrated that the rate of protein synthesis in the exocrine cells of the rat pancreas is constant in different physiological states, including prolonged fasting. In this study we have followed the fate of the protein in the pancreatic cells of the fasting animal in vivo as well as in vitro. The data were obtained by quantitative radioautography and by biochemical determinat...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1987

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.84.14.4901