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Vasoactive Intestinal Peptide Interacts with Alpha-adrenergic-, Cholinergic-, and Substance-P-mediated Responses in Rat Parotid and Submandibular Glands

Hahnemann University School of Medicine, Department of Pharmacology, Philadelphia, Pennsylvania 19102

W.S. Chernick

Hahnemann University School of Medicine, Department of Pharmacology, Philadelphia, Pennsylvania 19102

Secretory dose-response curves were obtained with both acetylcholine and phenylephrine treatment in rat parotid and submandibular glands. Vasoactive intestinal peptide (VIP), which produced relatively low volumes of protein-rich saliva in rat salivary glands, also enhanced acetylcholine-, phenylephrine-, and substance-P-mediated fluid and protein secretion when administered in combination with these agents. The specific mechanisms involved in the synergistic actions of VIP with substances such as acetylcholine, phenylephrine, and substance P, which are primarily linked to the production of fluid secretion in rat salivary glands, have yet to be determined.

Journal of Dental Research, Vol. 68, No. 11, 1489-1494 (1989)
DOI: 10.1177/00220345890680110401


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