title: The circadian rhythm of intact parathyroid hormone (1-84) and nephrogenous cyclic adenosine monophosphate in normal men.
abstract: A pronounced circadian rhythm has been demonstrated for intact parathyroid hormone (1-84) in the serum of normal male adults. The broad nocturnal rise of parathyroid hormone (1-84) secretion appears to be of physiological significance, for it is accompanied by a significant rise in nephrogenous cyclic adenosine monophosphate. The rate of return of parathyroid hormone (1-84) to baseline concentrations varies between individuals, an observation which has implications for the optimal time of sampling for the investigation of possible mild hyperparathyroidism.
authors.affiliation: Endocrine Unit, Institute of Biochemistry, Royal Infirmary, Glasgow.
authors.forename: F C
authors.initials: FC
authors.lastname: Logue
authors.forename: W D
authors.initials: WD
authors.lastname: Fraser
authors.forename: D S
authors.initials: DS
authors.lastname: O'Reilly
authors.forename: G H
authors.initials: GH
authors.lastname: Beastall
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D000242:Cyclic AMP / Q000652:urine*; D006801:Humans; D008297:Male; D010281:Parathyroid Hormone / Q000097:blood*; D013223:Statistics as Topic
chemical_list: D010281:Parathyroid Hormone; D000242:Cyclic AMP