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  • Title: alpha-Adrenergic regulation of secretion of mouse saliva rich in nerve growth factor.
    Author: Wallace LJ, Partlow LM.
    Journal: Proc Natl Acad Sci U S A; 1976 Nov; 73(11):4210-4. PubMed ID: 186790.
    Abstract:
    Nerve growth factor has been quantified by both bioassay and radial immunodiffusion in mouse saliva elicited by several secretagogues. The concentrations by bioassay of nerve growth factor in both epinephrine- and norepinephrine-induced saliva (3400 and 900 mug/ml, respectively) are higher than reported in any other source. In contrast, the concentrations of nerve growth factor in isoproterenol- and pilocarpine-induced saliva are relatively low (17 and 2 mug/ml, respectively). The specific activity of the salivary nerve growth factor was 41, 36, 2, and 0.6 mug/mg of protein in secretions elicited by epinephrine, norepinephrine, pilocarpine, and isoproterenol, respectively. Salivation after administration of either epinephrine or norepinephrine was completely inhibited by the alpha-adrenergic blocker, phenoxybenzamine. These results suggest that the release of saliva rich in nerve growth factor is primarily regulated through alpha-adrenergic receptors.
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