Abstract

Corticosteriod excess that accompanies major injury or trauma results in an accelerated muscle protein breakdown. The increased proteolysis is especially threatening as it results in muscle wasting and debility. Hypercortisolemia is characterized by an increase in muscle protein breakdown, while protein synthesis decreases or remains unchanged. Evidence in animal models and indirect human data suggest that muscle amino acid uptake is impaired. Therefore, we will investigate the hypothesis protein breakdown is central in mediating changes in muscle protein metabolism. We will determine the effect of acute (8hr) and four days of cortisol treatment (6 mg/m2/hr) on transmembrane amino acid transport. We will subsequently determine the effect of anabolic factors (insulin and amino acid) on amino acid transport and muscle protein metabolism during cortisol excess. Stable isotope tracers will be utilized to measure these effects in normal volunteers.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
5M01RR000073-38
Application #
6305255
Study Section
Project Start
1999-12-01
Project End
2000-11-30
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
38
Fiscal Year
2000
Total Cost
$34,211
Indirect Cost

  Institution

Name
University of Texas Medical Br Galveston
Department
Type
DUNS #
041367053
City
Galveston
State
TX
Country
United States
Zip Code
77555

  Publications

Gelman, Benjamin B; Endsley, Janice; Kolson, Dennis (2018) When do models of NeuroAIDS faithfully imitate ""the real thing""? J Neurovirol 24:146-155
Mourtakos, S P; Tambalis, K D; Panagiotakos, D B et al. (2017) Association between gestational weight gain and risk of obesity in preadolescence: a longitudinal study (1997-2007) of 5125 children in Greece. J Hum Nutr Diet 30:51-58
Ramanujam, V-M S; Nayeem, Fatima; Anderson, Karl E et al. (2017) Riboflavin as an independent and accurate biomarker for adherence in a randomized double-blind and placebo-controlled clinical trial. Biomarkers 22:508-516
Laffer, Cheryl L; Scott 3rd, Robert C; Titze, Jens M et al. (2016) Hemodynamics and Salt-and-Water Balance Link Sodium Storage and Vascular Dysfunction in Salt-Sensitive Subjects. Hypertension 68:195-203
Hosoki, Koa; Ying, Sun; Corrigan, Christopher et al. (2015) Analysis of a Panel of 48 Cytokines in BAL Fluids Specifically Identifies IL-8 Levels as the Only Cytokine that Distinguishes Controlled Asthma from Uncontrolled Asthma, and Correlates Inversely with FEV1. PLoS One 10:e0126035
Murai, Hiroki; Okazaki, Shintaro; Hayashi, Hisako et al. (2015) Alternaria extract activates autophagy that induces IL-18 release from airway epithelial cells. Biochem Biophys Res Commun 464:969-974
Diaz, Eva C; Herndon, David N; Porter, Craig et al. (2015) Effects of pharmacological interventions on muscle protein synthesis and breakdown in recovery from burns. Burns 41:649-57
Tuvdendorj, Demidmaa; Chinkes, David L; Bahadorani, John et al. (2014) Comparison of bolus injection and constant infusion methods for measuring muscle protein fractional synthesis rate in humans. Metabolism 63:1562-7
Sallam, Hanaa S; McNearney, Terry A; Chen, Jiande D Z (2014) Acupuncture-based modalities: novel alternative approaches in the treatment of gastrointestinal dysmotility in patients with systemic sclerosis. Explore (NY) 10:44-52
Petersen, John R; Stevenson, Heather L; Kasturi, Krishna S et al. (2014) Evaluation of the aspartate aminotransferase/platelet ratio index and enhanced liver fibrosis tests to detect significant fibrosis due to chronic hepatitis C. J Clin Gastroenterol 48:370-6

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