Cited by 410Adipose Tissue and MetabolismMetabolism, Diabetes, and CancerLipid metabolism and biosynthesis

The DOI matches its Crossref record; 65 of the 65 references it cites were found in a registry or an index.

Triacylglycerol accumulation in human obesity and type 2 diabetes is associated with increased rates of skeletal muscle fatty acid transport and increased sarcolemmal FAT/CD36

Abstract

We examined whether, in human obesity and type 2 diabetes, long chain fatty acid (LCFA) transport into skeletal muscle is upregulated and contributes to an excess intramuscular triacylglycerol accumulation. In giant sarcolemmal vesicles prepared from human skeletal muscle, LCFA transport rates were upregulated ~4‐fold and were associated with an increased intramuscular triacylglycerol content in obese individuals and in type 2 diabetics. In these individuals, the increased sarcolemmal LCFA transport rate was not associated with an altered expression of FAT/CD36 or FABPpm. Instead, the increase in the LCFA transport rate was associated with an increase in sarcolemmal FAT/CD36 but not sarcolemmal FABPpm. Rates of fatty acid esterification were increased threefold in isolated human muscle strips obtained from obese subjects, while concomitantly rates of fatty acid oxidation were not altered. Thus, the increased rate of fatty acid transport may contribute to the increased rates of triacylglycerol accumulation in human skeletal muscle. The altered FAT/CD36 trafficking in muscle from obese subjects and type 2 diabetics juxtaposes the known alterations in GLUT4 trafficking, i.e., GLUT4 is known to be retained in its intracellular depots while FAT/CD36 is retained at the sarcolemma. This redistribution of FAT/CD36 to the sarcolemma may contribute to the etiology of insulin resistance in human muscle, and hence, FAT/CD36 provides another potential therapeutic target for the prevention and/or treatment of insulin resistance.

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Crossref · 10.1096/fj.03-1065fje

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Metadata

Authors
Bonen, A., Parolin, M. L., Steinberg, G. R., Calles‐Escandon, J., Tandon, N. N., Glatz, J. F. C., Luiken, J. J. F. P., Heigenhauser, G. J. F., & Dyck, D. J.
Affiliations
  • University of Guelph (CA)
  • University of Waterloo (CA)
  • Section of Endocrinology and Metabolism Wake Forest University School of Medicine & Baptist Medical Center Winston‐Salem North Carolina 27157
  • Otsuka (United States) (US)
  • Maastricht University (NL)
  • McMaster University (CA)
Venue
The FASEB Journal
Publisher
Wiley
Published
2004-05-07
Volume
18
Issue
10
Pages
1144-1146
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2122852774
Cited by
410
References
63
Citations by year
2026: 7 · 2025: 13 · 2024: 9 · 2023: 9 · 2022: 10 · 2021: 15 · 2020: 13 · 2019: 19 · 2018: 5 · 2017: 9 · 2016: 21 · 2015: 10 · 2014: 22 · 2013: 21 · 2012: 33
FWCI
14.20
Type
journal article
Language
en
Open access
closed
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research
Topics
  • Health Sciences › Medicine › Physiology (medical) › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
triglyceride accumulation, skeletal muscle, obesity, type 2 diabetes, fatty acid uptake, FAT/CD36, FABPpm, fatty acid esterification, fatty acid oxidation, insulin resistance, GLUT4 trafficking, long-chain fatty acids
MeSH terms
Aged, Biological Transport, Carrier Proteins, Diabetes Mellitus, Type 2, Fatty Acids, Female, Humans, Insulin Resistance, Male, Middle Aged, Obesity, Sarcolemma, Triglycerides, Body Mass Index, Muscle, Skeletal, CD36 Antigens, Palmitic Acid, Fatty Acid-Binding Proteins

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