Abstract

Sarcopenia, the loss of muscle mass in older men, has emerged as a major public health problem. Testosterone deficiency has been proposed as one cause for the loss of lean body mass in older. men. However, most older men have testosterone levels that are in the broad normal range, albeit the average testosterone levels in older men are lower than those in younger men. Therefore, it has been speculated that older men might be less sensitive to the anabolic effects of androgens. The purpose of this study is to compare the testosterone dose-response curves in young and older men. Another objective is to examine the testosterone dose-dependency of various androgen-dependent physiologic processes such as protein synthesis, insulin sensitivity, lipids, muscle mass, and sexual function. These data would help select the optimum dose of testosterone for replacement. An additional objective is to compare the testosterone dose-response curves in young and older men in order to determine if older men are relatively insensitive to the anabolic effects of testosterone.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
5M01RR000425-31
Application #
6306596
Study Section
Project Start
1999-12-01
Project End
2000-11-30
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
31
Fiscal Year
2000
Total Cost
$982
Indirect Cost

  Institution

Name
La Biomed Research Institute/ Harbor UCLA Medical Center
Department
Type
DUNS #
City
Torrance
State
CA
Country
United States
Zip Code
90502

  Publications

Mehta, Puja K; Hermel, Melody; Nelson, Michael D et al. (2018) Mental stress peripheral vascular reactivity is elevated in women with coronary vascular dysfunction: Results from the NHLBI-sponsored Cardiac Autonomic Nervous System (CANS) study. Int J Cardiol 251:8-13
Kim, Se-Min; Cui, Jinrui; Rhyu, Jane et al. (2018) Association between site-specific bone mineral density and glucose homeostasis and anthropometric traits in healthy men and women. Clin Endocrinol (Oxf) 88:848-855
Sharma, Shilpa; Mehta, Puja K; Arsanjani, Reza et al. (2018) False-positive stress testing: Does endothelial vascular dysfunction contribute to ST-segment depression in women? A pilot study. Clin Cardiol 41:1044-1048
Shufelt, Chrisandra; Manson, Joann (2018) Managing Menopause by Combining Evidence With Clinical Judgment. Clin Obstet Gynecol 61:470-479
Cherukuri, Lavanya; Smith, Michael S; Tayek, John A (2018) The durability of oral diabetic medications: Time to A1c baseline and a review of common oral medications used by the primary care provider. Endocrinol Diabetes Metab J 2:
Nicholls, Stephen J; Tuzcu, E Murat; Wolski, Kathy et al. (2018) Extent of coronary atherosclerosis and arterial remodelling in women: the NHLBI-sponsored Women's Ischemia Syndrome Evaluation. Cardiovasc Diagn Ther 8:405-413
Wei, Janet; Bakir, May; Darounian, Navid et al. (2018) Myocardial Scar Is Prevalent and Associated With Subclinical Myocardial Dysfunction in Women With Suspected Ischemia But No Obstructive Coronary Artery Disease: From the Women's Ischemia Syndrome Evaluation-Coronary Vascular Dysfunction Study. Circulation 137:874-876
Elboudwarej, Omeed; Wei, Janet; Darouian, Navid et al. (2018) Maladaptive left ventricular remodeling in women: An analysis from the Women's Ischemia Syndrome Evaluation-Coronary Vascular Dysfunction study. Int J Cardiol 268:230-235
Shufelt, Chrisandra; Bairey Merz, C Noel; Pettinger, Mary B et al. (2018) Estrogen-alone therapy and invasive breast cancer incidence by dose, formulation, and route of delivery: findings from the WHI observational study. Menopause 25:985-991
Nakanishi, Rine; Baskaran, Lohendran; Gransar, Heidi et al. (2017) Relationship of Hypertension to Coronary Atherosclerosis and Cardiac Events in Patients With Coronary Computed Tomographic Angiography. Hypertension 70:293-299

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