Effect of age on circadian rhythm of prolactin in normal men.
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.
Zakria
F
F
Sepulveda VA Medical Center, UCLA-San Fernando Valley Program.
Stern
N
N
McGinty
D
D
Beahm
E
E
Littner
M
M
Sowers
J R
JR
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
D011388:Prolactin