Abstract

Over the past 4 years, considerable data has indicated that insulin increases skeletal muscle blood flow in healthy humans and insulin- resistance in NIDDM and obese skeletal muscle is accompanied by a diminished vascular response. It is not known whether the increase in muscle blood flow is due to enhanced flow to previously perfused muscle or to recruitment of new capillary beds. Using two techniques developed in our laboratories, we will test the hypothesis that insulin and IGF-I act to open new capillary beds. These studies are ongoing. Preliminary results indicate that insulin not only induces this changes in total skeletal muscle blood flow, but also recruits new capillary elements thus affecting blood flow distribution within muscle. Future experiments will take advantage of albumin coated microbubbles that can be injected intravenously rather than interarterially.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
3M01RR000847-25
Application #
6279385
Study Section
Project Start
1997-12-01
Project End
1998-11-30
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
Hallmark, Rachel; Patrie, James T; Liu, Zhenqi et al. (2014) The effect of exercise intensity on endothelial function in physically inactive lean and obese adults. PLoS One 9:e85450
Nass, Ralf; Liu, Jianhua; Patrie, James et al. (2014) Four-hour infusion of hydrocortisone does not suppress the nocturnal increase of circulating acyl- or desacyl-ghrelin concentrations in healthy young adults. J Clin Endocrinol Metab 99:E1696-700

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