['Systemic concentrations of T, estradiol (E', 'Because E', 'The study was conducted at the Mayo Center for Clinical and Translational Science.', 'This was a randomized, double-blind, controlled study in 60 healthy postmenopausal women treated with the following: 1) double placebo; 2) anastrozole, a potent inhibitor of aromatase-enzyme activity, which mediates E', 'GH pulse generation was quantified by frequent GH sampling before and after short-term iv somatostatin infusion, thought to induce hypothalamic GHRH-mediated rebound-like GH secretion.', 'On anastrozole, E'] Does endogenous Estrogen regulate Somatostatin-Induced Rebound GH Secretion in Postmenopausal Women?