Pasquali R.,University of Bologna |
Gambineri A.,University of Bologna |
Cavazza C.,University of Bologna |
Gasparini D.I.,University of Bologna |
And 3 more authors.
European Journal of Endocrinology | Year: 2011
Background: Treatment of obesity improves all features of the polycystic ovary syndrome (PCOS). There is, however, a heterogeneous response to weight loss, and predictive factors are unknown. Objective: This follow-up study aimed to investigate obese women with PCOS treated with a long-term lifestyle program to evaluate responsiveness and predictability. Methods: One hundred PCOS women meeting the criteria for selection were invited to participate and 65 of them agreed. Lifestyle intervention had consisted of a 1200-1400 kcal/day diet for 6 months, followed by mild calorie restriction and physical activity. The protocol, which was similar at baseline and follow-up, included anthropometry, clinical evaluation, pelvic ultrasound, and laboratory investigations. The mean follow-up period was 20.4±12.5 months. Results: After the follow-up period, women were reclassified into three groups according to the persistence (group 1, 15.4%), partial (group 2, 47.7%), or complete (group 3, 36.9%) disappearance of the categorical features of PCOS (hyperandrogenism, menses, and ovulatory dysfunctions). Duration of the follow-up and extent of weight loss were similar among the three groups, as were fasting and glucose-stimulated insulin and indices of insulin resistance. Baseline waist circumference, waist to hip ratio (WHR), and androstenedione blood levels were negatively correlated with a better outcome in the univariate analysis. However, only basal androstenedione values persisted to a highly significant extent (P<0.001) in the multivariate analysis. Conclusions: Responsiveness to weight loss in overweight/obese PCOS women varies considerably and more than one third of women may achieve full recovery. These findings add new perspectives to the impact of obesity on the pathophysiology of PCOS. © 2011 European Society of Endocrinology.
Gambineri A.,S Orsola Malpighi Hospital |
Patton L.,S Orsola Malpighi Hospital |
Prontera O.,S Orsola Malpighi Hospital |
Fanelli F.,S Orsola Malpighi Hospital |
And 4 more authors.
Journal of Endocrinological Investigation | Year: 2011
Aim: The aims of the study were to understand the association between insulin-like factor 3 (INSL3) and functional ovarian hyperandrogenism (FOH) in PCOS and the regulatory role played by LH. Subjects and methods: Fifteen PCOS women were classified as FOH (FOH-PCOS, no.=8) and non-FOH (NFOH-PCOS, no.=7) according to the response of 17OH-progesterone to buserelin (a GnRH analogue) with respect to 15 controls. FOH-PCOS and NFOH-PCOS were compared for basal INSL3 levels. In addition, the effect of buserelin on INSL3 concentrations and the relationship between basal and buserelin-stimulated LH and 17OH-progesterone and INSL3 were evaluated. Results: Basal INSL3 levels were higher in FOH-PCOS than NFOH-PCOS (p=0.001) and controls (p=0.001), whereas they did not differ between NFOH-PCOS and controls. In addition, FOH-PCOS had a higher response of LH to buserelin with respect to NFOH-PCOS. Within all PCOS women the levels of INSL3 positively correlated with free testosterone (p=0.022) and negatively with SHBG (r= p=0.031). Moreover, positive correlations with the absolute increase of 17OH-progesterone (p<0.001) and with the LH area under the curve (p=0.001) after buserelin administration were found. In the multiple regression analysis INSL3 persisted significantly correlated only with 17OH-progesterone response to buserelin. Finally, INSL3 was not significantly modified after buserelin administration either in FOH-PCOS or in NFOH-PCOS. Conclusions: These data suggest that INSL3 is related to FOH in PCOS women, but this association seems not to be mediated by LH, further reinforcing the concept that a pathophysiological heterogeneity for ovarian hyperandrogenism in PCOS exists. ©2011, Editrice Kurtis.