No changes of peripheral insulin resistance in polycystic ovary syndrome after long-term reduction of endogenous androgens with leuprolide.
The aim of this study was to investigate the relationship between plasma insulin levels, peripheral insulin sensitivity and androgen secretion in ten patients with polycystic ovary syndrome and in six obese women as compared with six normal-weight control subjects. During a euglycemic-hyper-insulinemic clamp no significant change of testosterone, androstenedione or dehydroepiandrosterone sulfate plasma levels was observed in the two groups of patients or in the control subjects; insulin sensitivity was clearly reduced and was similar in polycystic ovary patients and in obese women, in spite of the different plasma androgen levels. A long-term (5 months) androgen suppression with the gonadotropin-releasing hormone agonist leuprolide was not able to improve significantly the insulin sensitivity. These results demonstrate that the short-term hyperinsulinemia achieved with the clamp technique does not affect androgen secretion and that insulin resistance, measured with the same technique, is not influenced by long-term suppression of plasma androgen levels in polycystic ovary syndrome.
Department of Internal Medicine, University of Messina, Italy.
A
A
Lasco
D
D
Cucinotta
A
A
Gigante
G
G
Denuzzo
M
M
Pedulla
A
A
Trifiletti
N
N
Frisina
D000328:Adult; D000728:Androgens / Q000097:blood* / Q000502:physiology; D000735:Androstenedione / Q000097:blood; D003687:Dehydroepiandrosterone / Q000031:analogs & derivatives / Q000097:blood; D019314:Dehydroepiandrosterone Sulfate; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D015309:Glucose Clamp Technique; D007987:Gonadotropin-Releasing Hormone / Q000819:agonists*; D006801:Humans; D006946:Hyperinsulinism / Q000097:blood / Q000503:physiopathology; D007328:Insulin / Q000097:blood; D007333:Insulin Resistance / Q000502:physiology*; D016729:Leuprolide / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000097:blood; D009765:Obesity / Q000097:blood / Q000503:physiopathology; D011085:Polycystic Ovary Syndrome / Q000097:blood / Q000503:physiopathology*; D013739:Testosterone / Q000097:blood
D000728:Androgens; D007328:Insulin; D007987:Gonadotropin-Releasing Hormone; D013739:Testosterone; D000735:Androstenedione; D003687:Dehydroepiandrosterone; D019314:Dehydroepiandrosterone Sulfate; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D016729:Leuprolide