title: The role of the superior cervical ganglia in the nocturnal rise of pineal type-II thyroxine 5'-deiodinase activity.
abstract: Superior cervical ganglionectomy (SCGx) abolished the nocturnal rise in pineal type-II thyroxine 5'-deiodinase (5'-D) activity in both euthyroid and hypothyroid rats. Isoproterenol induced at least as great a rise in diurnal pineal 5'-D in SCGx as in intact rats. These data suggest that beta-adrenergic stimulation through the superior cervical ganglia is essential for the nocturnal rise in pineal 5'-D activity.
authors.affiliation: Department of Medicine, Oregon Health Sciences University, Portland 97201.
authors.forename: M
authors.initials: M
authors.lastname: Murakami
authors.forename: M A
authors.initials: MA
authors.lastname: Greer
authors.forename: S
authors.initials: S
authors.lastname: Hjulstad
authors.forename: S E
authors.initials: SE
authors.lastname: Greer
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D005727:Ganglia, Spinal / Q000502:physiology*; D007453:Iodide Peroxidase / Q000378:metabolism / Q000502:physiology*; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D010870:Pineal Gland / Q000187:drug effects / Q000201:enzymology* / Q000502:physiology; D051381:Rats; D011919:Rats, Inbred Strains; D013961:Thyroid Gland / Q000502:physiology
chemical_list: D007453:Iodide Peroxidase; D007545:Isoproterenol