Rhythms in the ovulatory cycle. 3rd: Cortisol and dehydroepiandrosterone sulphate (DHEA-S).
The circadian profiles of cortisol and dehydroepiandrosterone sulphate (DHEA-S) were analyzed in a homogeneous group of 15 young normally cycling women, at 4 times of the menstrual cycle: early follicular (EF), late follicular (LF), early luteal (EL) and late luteal (LL) stages. The circatrigintan variations of the same hormones were also evaluated. Population-mean cosinor analysis allowed the demonstration of a highly significant circadian periodicity for both variables in any of the 4 stages of the menstrual cycle; on the other hand, the same computation failed to demonstrate a significant circatrigintan periodicity. In each of the stages considered, the circadian acrophase of DHEA-S was delayed in comparison to that of cortisol, being located in the early afternoon hours. The demonstration of a clear-cut circadian oscillation in serum DHEA-S prompts studies on possible chrono-abnormalities of the steroid production in women with hyperandrogenic diseases.
Carandente
F
F
Cattedra di Cronobiologia, Facoltà di Medicina e Chirurgia, Univerità degli Studi di Milano, Italy.
Angeli
A
A
Candiani
G B
GB
Crosignani
P G
PG
Dammacco
F
F
De Cecco
L
L
Marrama
P
P
Massobrio
M
M
Martini
L
L
D000328:Adult; D002940:Circadian Rhythm; D003687:Dehydroepiandrosterone / Q000031:analogs & derivatives* / Q000097:blood; D019314:Dehydroepiandrosterone Sulfate; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D008597:Menstrual Cycle / Q000502:physiology*; D011863:Radioimmunoassay
D003687:Dehydroepiandrosterone; D019314:Dehydroepiandrosterone Sulfate; D006854:Hydrocortisone