Outcomes of total percutaneous endovascular aortic repair for thoracic, fenestrated, and branched endografts.

Objective: Percutaneous endovascular aortic repair (PEVAR) has been increasingly used to treat infrarenal abdominal aortic aneurysms, but few studies have evaluated the results in complex aortic aneurysms. We reviewed the technical success and clinical outcomes of PEVAR using large-diameter sheaths for the treatment of complex aortic aneurysms with thoracic, fenestrated, and branched stent grafts.

Methods: The clinical data of patients who underwent total PEVAR for descending thoracic aneurysm, thoracoabdominal aortic aneurysm, pararenal, and aortoiliac aneurysms using thoracic, fenestrated, and branched stent grafts between 2009 and 2014 were reviewed.

Estrogen-like potentiation of ghrelin-stimulated GH secretion by fulvestrant, a putatively selective ER antagonist, in postmenopausal women.

Context: Hyposomatotropism in healthy aging women reflects in part physiological estrogen (estradiol [E2]) depletion associated with menopause.

Objective And Design: The purpose of this study was to test the hypothesis that low concentrations of endogenous E2 after menopause continue to drive GH secretion.

Setting: The study was performed at the Mayo Center for Clinical and Translational Science.

Estradiol, but not testosterone, heightens cortisol-mediated negative feedback on pulsatile ACTH secretion and ACTH approximate entropy in unstressed older men and women.

How sex steroids modulate glucocorticoid feedback on the hypothalamic-pituitary-corticotrope (HPC) unit is controversial in humans. We postulated that testosterone (T) in men and estradiol (E2) in women govern unstressed cortisol-mediated negative feedback on ACTH secretion. To test this hypothesis, 24 men and 24 women age 58 ± 2.

Short-term estradiol supplementation potentiates low-dose ghrelin action in the presence of GHRH or somatostatin in older women.

Context: Ghrelin is a potent gastric-derived GH-releasing peptide. How ghrelin interacts with sex steroids, GHRH, and somatostatin (SS) is not known.

Objective: Our objective was to test the hypotheses that ghrelin's interactions with GHRH (synergistic) and SS (disinhibitory) are ghrelin dose-dependent and amplified by estrogen.

Analysis of the impact of intravenous LH pulses versus continuous LH infusion on testosterone secretion during GnRH-receptor blockade.

Gonadotrophin-releasing hormone (GnRH) pulsatility is required for optimal luteinizing hormone (LH) secretion, but whether LH pulsatility is required for physiological testosterone (T) secretion is not known. To test the postulate that pulses of recombinant human (rh) LH stimulate greater T secretion than continuous infusion of the same dose, a potent selective GnRH antagonist was administered overnight to 19 healthy men ages 18-49 yr. Subjects then received saline or rhLH intravenously continuously or as 6-min pulses intravenously every 1 or 2 h at the same total dose.