The effect of adrenergic agonists and antagonists on cysteine-proteinase inhibitor (cystatin) in rat saliva.
The effect of a number of adrenergic agonists and antagonists on the induction of rat salivary cystatin was investigated. A highly sensitive and specific radioimmunoassay was used to determine cystatin in rat whole saliva. Treatment for 10 consecutive days with a non-specific beta-adrenergic agonist isoproterenol, or the beta 1-adrenergic agonists dobutamine or methoxyphenamine, resulted in the induction of the salivary cystatin. Induction was also found in rats treated for 10 days with arterenol. Only trace quantities of cystatin could be detected in saliva of rats treated with the beta 2-adrenergic agonists terbutaline or salbutamol. When isoproterenol was injected concomitantly with the mixed beta-antagonist propranolol or the beta 1-adrenergic antagonists metaprolol, proctocol or atenolol the production of cystatin was totally suppressed. However, the beta 2-antagonist, ICI 118551, produced only a partial reduction in salivary cystatin induction elicited by isoproterenol. The findings suggest that the induction of salivary cystatin is regulated, in part, by beta 1-adrenergic receptor stimulation.
Bedi
G S
GS
Department of Oral Biology, School of Medicine, State University of New York, Buffalo 14214.
D000318:Adrenergic beta-Agonists / Q000494:pharmacology*; D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D000420:Albuterol / Q000494:pharmacology; D000818:Animals; D001262:Atenolol / Q000494:pharmacology; D015153:Blotting, Western; D015853:Cysteine Proteinase Inhibitors / Q000032:analysis*; D004280:Dobutamine / Q000494:pharmacology; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D007545:Isoproterenol / Q000494:pharmacology; D008694:Methamphetamine / Q000031:analogs & derivatives / Q000494:pharmacology; D008729:Methoxamine / Q000494:pharmacology; D008790:Metoprolol / Q000494:pharmacology; D009638:Norepinephrine / Q000494:pharmacology; D011412:Propanolamines / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology; D011863:Radioimmunoassay; D051381:Rats; D011919:Rats, Inbred Strains; D012471:Salivary Proteins and Peptides / Q000032:analysis*; D013726:Terbutaline / Q000494:pharmacology
D000318:Adrenergic beta-Agonists; D000319:Adrenergic beta-Antagonists; D015853:Cysteine Proteinase Inhibitors; D011412:Propanolamines; D012471:Salivary Proteins and Peptides; D004280:Dobutamine; D008694:Methamphetamine; C026777:ICI 118551; D001262:Atenolol; D011433:Propranolol; D008790:Metoprolol; D008729:Methoxamine; C005157:methoxyphenamine; D007545:Isoproterenol; D013726:Terbutaline; D000420:Albuterol; D009638:Norepinephrine