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. 1976 Sep;260(2):351–370. doi: 10.1113/jphysiol.1976.sp011519

alpha-Adrenergic, beta-adrenergic and cholinergic mechanisms for amylase secretion by rat parotid gland in vitro.

B A Leslie, J W Putney Jr, J M Sherman
PMCID: PMC1309095  PMID: 185365

Abstract

1. Rat parotid gland slices, incubated in a balanced, buffered salt solution, were found to be physiologically stable for up to 2 hr with respect to O2 consumption, water content, extracellular space and cation content. 2. The slices could be stimulated to secrete amylase by activation of alpha-adrenergic, beta-adrenergic or muscarinic cholinergic receptors. 3. The secretion elicited through all three receptors appeared to involve exocytosis as revealed by electron microscopy. 4. The beta-agonist, isoprenaline, increased tissue content of cyclic adenosine 3',5'-monophosphate (cyclic AMP); alpha-adrenergic and cholinergic agents had no effect on the level of this cyclic nucleotide. 5. Secretion via cholinergic or alpha-adrenergic mechanisms required extra-cellular calcium; the beta-adrenergic mechanism did not. 6. It was concluded that stimulation of rat parotid cells activates distinctly separate pathways leading ultimately to exocytosis, one pathway involving cyclic AMP, and the other, external Ca2+ ion.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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