Cited by 131Metabolism, Diabetes, and CancerDiabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and Research

Localization of Rate-Limiting Defect for Glucose Disposal in Skeletal Muscle of Insulin-Resistant Type I Diabetic Patients

Yki-Järvinen, Hannele, Sahlin, Kent, Ren, Jian M, Koivisto, Veikko A·1990·Diabetes

Abstract

We searched for metabolic crossover points in muscle glucose metabolite profiles during maintenance of matched glucose fluxes across forearm muscle in insulin-resistant type I (insulin-dependent) diabetic patients and nondiabetic subjects. To classify subjects as insulin sensitive or insulin resistant, whole-body and forearm glucose disposal, oxidative and nonoxidative glucose disposal (indirect calorimetry), and glycogen synthesis (muscle glycogen content in needle biopsies) were measured under euglycemic conditions at two insulin concentrations. Wholebody and forearm muscle glucose disposal were significantly reduced in diabetic patients compared with control subjects. The reduction in total glucose disposal was due to similar relative reductions in oxidative and nonoxidative glucose disposal, pointing toward rate limitation early in glucose metabolism. The defect in nonoxidative glucose disposal was at least partly due to a defect in muscle glycogen synthesis, because muscle glycogen content failed to increase in response to an increase in the plasma insulin concentration in the diabetic patients. The mostinsulin-resistant type 1 diabetic patients were restudied under conditions where, by glucose mass action, whole-body glucose disposal was forced to be similar to that in the control subjects. Matching glucose fluxes in the two groups resulted in similar rates of forearm and whole-body oxidative and nonoxidative glucose disposal and muscle glycogen synthesis, but it did not result in accumulation of free intracellular glucose, glucose-6-phosphate, glucose-1-phosphate, fructose-6-phosphate, or lactate in muscle. These data imply that the rate-limiting defect for glucose disposal in skeletal muscle of type I diabetic patients is at the level of glucose transport.

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Crossref · 10.2337/diab.39.2.157

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  • Studies in which glucose disposal rates were matched by increasing the glucose or insulin infusion rates provide further support for these findings.

    “Further support for these findings comes from studies in which glucose disposal rates were matched by increasing the glucose or insulin infusion rates ([27](#r27), [66](#r66)).”

    From Metabolic flexibility and insulin resistance (2008) · cites this paper as [66]

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Authors
Yki-Järvinen, H., Sahlin, K., Ren, J. M., & Koivisto, V. A.
Affiliations
  • Second Department of Medicine, University of Helsinki Finland Department of Clinical Physiology, Huddinge Hospital Stockholm, Sweden
  • University of Helsinki (FI)
Venue
Diabetes
Published
1990-02-01
Volume
39
Issue
2
Pages
157-167
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2075855413
Cited by
131
References
0
Citations by year
2025: 1 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 3 · 2015: 4 · 2013: 3 · 2012: 1
FWCI
4.14
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
type 1 diabetes, insulin resistance, glucose transport, nonoxidative glucose disposal, muscle glycogen synthesis, glucose-6-phosphate, glucose-1-phosphate, fructose-6-phosphate, lactate
MeSH terms
Adult, Biological Transport, Diabetes Mellitus, Type 1, Glucose, Glycogen, Glycogen Synthase, Humans, Insulin, Insulin Resistance, Metabolic Clearance Rate, Muscles, Oxidation-Reduction

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