[Circadian and circumannual variations in the level of plasma TSH and prolactin in healthy adult males].
4 healthy young volunteers were submitted to the study of circadian and circannual oscillations of plasma TSH and Prolactin. Our data demonstrated the existence of a circadian rhythm for TSH with acrophase at 04,39 and a circannual rhythm of the same hormone with acrophase in January. While for Prolactin it was possible to detect a circadian rhythm with acrophase at 04,29. We failed to demonstrate any circannual variation of plasma hormonal levels.
D000328:Adult; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D011388:Prolactin / Q000097:blood*; D012621:Seasons; D013972:Thyrotropin / Q000097:blood*
D011388:Prolactin; D013972:Thyrotropin
Variazioni circadiane e circannuali dei livelli del TDH e della prolattina plasmatici in adulti sani di sesso maschile.