Corticotropin-releasing hormone induces an exaggerated response of adrenocorticotropic hormone and cortisol in polycystic ovary syndrome.
OBJECTIVE
To evaluate pituitary-adrenal responsive to corticotropin-releasing hormone (CRH) stimulus in polycystic ovary syndrome (PCOS).


METHODS
Controlled clinical study.


METHODS
Twelve women aged 17 to 32 years, who had been diagnosed as having PCOS, were studied. Fifteen appropriately age- and weight-matched ovulatory patients served as the control.


METHODS
In the early follicular phase or after progestin-induced menses, human CRH was injected at 8:00 A.M. and blood samples were collected at 0, 15, 30, 60, and 90 minutes after stimulus. Plasma levels of ACTH and cortisol were measured.


RESULTS
Baseline levels of ACTH and cortisol were similar in PCOS and control patients. Both ACTH and cortisol response to CRH were markedly greater in the PCOS population as compared with controls. Moreover, ACTH- and cortisol-stimulated secretion was prolonged for the whole period of the study in hyperandrogenic patients with respect to controls, where baseline levels were attained 60 minutes after the stimulus.


CONCLUSIONS
Our results are consistent with the hypothesis that women with PCOS may demonstrate hyperfunction of the hypothalamic-pituitary-adrenal axis, which may be involved in the physiopathologic events leading to the complexity of the syndrome.
Lanzone
A
A
Oasi Institute of Research, Troina, Italy.
Petraglia
F
F
Fulghesu
A M
AM
Ciampelli
M
M
Caruso
A
A
Mancuso
S
S
D000293:Adolescent; D000311:Adrenal Glands / Q000503:physiopathology; D000324:Adrenocorticotropic Hormone / Q000097:blood*; D000328:Adult; D016022:Case-Control Studies; D003346:Corticotropin-Releasing Hormone; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D007031:Hypothalamus / Q000503:physiopathology; D007700:Kinetics; D010902:Pituitary Gland / Q000503:physiopathology; D011085:Polycystic Ovary Syndrome / Q000097:blood / Q000503:physiopathology*
D000324:Adrenocorticotropic Hormone; D003346:Corticotropin-Releasing Hormone; D006854:Hydrocortisone