title: Effect operative weight reduction on Hypothalamo-Pituitary, -adrenal and -ovarian axes function in obese women with menstrual disturbances.
abstract: The aim of the study was to evaluate insulin (Ins), pituitary hormones (GH, PRL, LH, FSH), sex hormone-binding globulin (SHBG) and insulin-like growth factor-I (IGF-I) under basal conditions as well as the changes in GH, PRL and F levels after insulin-induced hypoglycemia in 21 obese women before and one year after jejunoileostomy as well as in 20 healthy female volunteers with normal body weight (aged 27 to 36 years). Before surgery all obese women had irregular menstrual cycles. In 14/21 non-operated morbidly obese women and after operative weight reduction (jejunoileostomy), the GH, PRL and F response to insulin-induced hypoglycemia was lower than that in non-obese healthy controls. No difference, however, was observed in GH, PRL and F secretion in non-operated obese women as compared with obese women after jejunoileostomy. Hypothalamic disturbances in the release of GH, PRL and F corresponded to higher levels of sex steroid hormones, IGF-I, and also to lower values of LH/FSH index and SHBG capacity in serum. After jejunoileostomy the pituitary-ovarian axis function as well as SHBG and IGF-I concentrations were normalized only in patients with a noted body mass reduction and with normal preoperative GH, PRL and F secretion dynamics. In these women the menstruation became regular.
authors.affiliation: 1st Department of Pathophysiology and Clinical Biochemistry, Silesian Academy of Medicine, 41-800 Zabrze, Poland.
authors.initials: Z
authors.lastname: Ostrowska
authors.initials: K
authors.lastname: Zwirska-Korczala
authors.initials: B
authors.lastname: Buntner
authors.initials: M
authors.lastname: Pardela
authors.initials: M
authors.lastname: Drozdz