Abstract

Study whether equivalent levels of circulating estradiol obtained by oral and by transdermal administration promote the same degree of GH stimulation. Subjects will be studied on three occasions: pretreament, after 14 days of treatment with oral estradiol, and after 14 days of transdermal estradiol treatment. Study completed and paper published. At relatively high doses the effects of transdermal E2 parallel those of oral E2 exactly, significantly elevating GH and SHBG concentrations, while decreasing circulating IGF-I levels. Our results suggest that, at least in the higher dose ranges, absolute E2 concentrations may be a more important determinant of endogenous GH production than route of administration. In this study transdermal E2, like oral E2, appears to function by decreasing circulating IGF-1, reducing negative feedback at the pituitary/hypothalamus and leading to increased GH production. A revision of this protocol (MOT090) will examine the effects of lower estradiol doses by both routes in the same population.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
5M01RR000847-25
Application #
2787378
Study Section
Project Start
Project End
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
25
Fiscal Year
1998
Total Cost
Indirect Cost

  Institution

Name
University of Virginia
Department
Type
DUNS #
001910777
City
Charlottesville
State
VA
Country
United States
Zip Code
22904

  Publications

Campbell, Garland A; Patrie, James T; Gaylinn, Bruce D et al. (2018) Oral ghrelin receptor agonist MK-0677 increases serum insulin-like growth factor 1 in hemodialysis patients: a randomized blinded study. Nephrol Dial Transplant 33:523-530
Malin, Steven K; Rynders, Corey A; Weltman, Judy Y et al. (2016) Endothelial function following glucose ingestion in adults with prediabetes: Role of exercise intensity. Obesity (Silver Spring) 24:1515-21
Rynders, Corey A; Weltman, Judy Y; Malin, Steven K et al. (2016) Comparing Simple Insulin Sensitivity Indices to the Oral Minimal Model Postexercise. Med Sci Sports Exerc 48:66-72
Hu, Yinin; Kim, Helen; Blackwell, Christopher M et al. (2015) Long-term outcomes of helper peptide vaccination for metastatic melanoma. Ann Surg 262:456-64; discussion 462-4
Marozkina, Nadzeya V; Wang, Xin-Qun; Stsiapura, Vitali et al. (2015) Phenotype of asthmatics with increased airway S-nitrosoglutathione reductase activity. Eur Respir J 45:87-97
Nass, Ralf; Nikolayev, Alexander; Liu, Jianhua et al. (2015) The level of circulating octanoate does not predict ghrelin O-acyl transferase (GOAT)-mediated acylation of ghrelin during fasting. J Clin Endocrinol Metab 100:E110-3
Argo, Curtis K; Patrie, James T; Lackner, Carolin et al. (2015) Effects of n-3 fish oil on metabolic and histological parameters in NASH: a double-blind, randomized, placebo-controlled trial. J Hepatol 62:190-7
Chyun, Deborah A; Wackers, Frans J Th; Inzucchi, Silvio E et al. (2015) Autonomic dysfunction independently predicts poor cardiovascular outcomes in asymptomatic individuals with type 2 diabetes in the DIAD study. SAGE Open Med 3:2050312114568476
Hu, Yinin; Petroni, Gina R; Olson, Walter C et al. (2014) Immunologic hierarchy, class II MHC promiscuity, and epitope spreading of a melanoma helper peptide vaccine. Cancer Immunol Immunother 63:779-86
Paige, Mikell; Wang, Kan; Burdick, Marie et al. (2014) Role of leukotriene A4 hydrolase aminopeptidase in the pathogenesis of emphysema. J Immunol 192:5059-68

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