title: Effect of age on circadian rhythm of prolactin in normal men.
abstract: The 24 h secretion pattern of prolactin was studied in 9 young normal males (aged 22-46) and in 11 older normal men (aged 55-74). Despite considerably reduced duration and quality of sleep, the nocturnal surge in plasma prolactin in elderly men was the same as in young subjects. The overall 24 h secretion pattern and the absolute levels of prolactin are unaltered with age in normal men.
authors.affiliation: Sepulveda VA Medical Center, UCLA-San Fernando Valley Program.
authors.forename: F
authors.initials: F
authors.lastname: Zakria
authors.forename: N
authors.initials: N
authors.lastname: Stern
authors.forename: D
authors.initials: D
authors.lastname: McGinty
authors.forename: E
authors.initials: E
authors.lastname: Beahm
authors.forename: M
authors.initials: M
authors.lastname: Littner
authors.forename: J R
authors.initials: JR
authors.lastname: Sowers
mesh_terms: D000375:Aging / Q000502:physiology*; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D011388:Prolactin / Q000097:blood / Q000378:metabolism*; D012890:Sleep / Q000502:physiology; D014851:Wakefulness / Q000502:physiology
chemical_list: D011388:Prolactin