title: New approaches for determining the site of salivary fluid secretory disorders.
abstract: Considerable progress has been made in understanding the events which underlie salivary fluid secretion. We have utilized novel approaches to evaluate the functional status of three distinct sites in the secretory cascade. First, salivary sympathetic nerve function studies used isotopic dopamine to measure catecholamine uptake and metabolism in vivo. Second, salivary muscarinic-cholinergic receptors were characterized in vivo by use of stereo-specific ligands and pharmacokinetic analyses. Finally, microfluorometric methods were used to study intracellular Ca2+ signaling in dispersed cells prepared from biopsied tissue. We conclude that it is possible to determine the functional status of key steps in salivary fluid generation with isotopic and fluorometric imaging techniques.
authors.affiliation: Clinical Investigations and Patient Care Branch, National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland 20892.
authors.forename: B J
authors.initials: BJ
authors.lastname: Baum
authors.forename: Y
authors.initials: Y
authors.lastname: Hiramatsu
authors.forename: W G
authors.initials: WG
authors.lastname: Kohn
authors.forename: I H
authors.initials: IH
authors.lastname: Valdez
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D003592:Cytophotometry; D004298:Dopamine; D007700:Kinetics; D009638:Norepinephrine / Q000096:biosynthesis; D010306:Parotid Gland / Q000378:metabolism*; D011813:Quinuclidinyl Benzilate / Q000031:analogs & derivatives; D051381:Rats; D011976:Receptors, Muscarinic / Q000378:metabolism*; D012463:Saliva / Q000378:metabolism*; D012466:Salivary Gland Diseases / Q000503:physiopathology*; D013564:Sympathetic Nervous System / Q000502:physiology
chemical_list: D011976:Receptors, Muscarinic; D011813:Quinuclidinyl Benzilate; D002118:Calcium; D004298:Dopamine; D009638:Norepinephrine