Cited by 3,165Diet, Metabolism, and DiseaseAdipokines, Inflammation, and Metabolic DiseasesMetabolomics and Mass Spectrometry Studies

A branched-chain amino acid-related metabolic signature that differentiates obese and lean humans and contributes to insulin resistance

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Newgard, Christopher B., An, Jie, Bain, James R., Muehlbauer, Michael J., Stevens, Robert D., Lien, Lillian F., Haqq, Andrea M., Shah, Svati H. +13 more·2009·Cell Metabolism

Abstract

Metabolomic profiling of obese versus lean humans reveals a branched-chain amino acid (BCAA)-related metabolite signature that is suggestive of increased catabolism of BCAA and correlated with insulin resistance. To test its impact on metabolic homeostasis, we fed rats on high-fat (HF), HF with supplemented BCAA (HF/BCAA), or standard chow (SC) diets. Despite having reduced food intake and a low rate of weight gain equivalent to the SC group, HF/BCAA rats were as insulin resistant as HF rats. Pair-feeding of HF diet to match the HF/BCAA animals or BCAA addition to SC diet did not cause insulin resistance. Insulin resistance induced by HF/BCAA feeding was accompanied by chronic phosphorylation of mTOR, JNK, and IRS1Ser307 and by accumulation of multiple acylcarnitines in muscle, and it was reversed by the mTOR inhibitor, rapamycin. Our findings show that in the context of a dietary pattern that includes high fat consumption, BCAA contributes to development of obesity-associated insulin resistance.

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Crossref · 10.1016/j.cmet.2009.02.002

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Authors
Newgard, C. B., An, J., Bain, J. R., Muehlbauer, M. J., Stevens, R. D., Lien, L. F., Haqq, A. M., Shah, S. H., Arlotto, M., Slentz, C. A., Rochon, J., Gallup, D., Ilkayeva, O., Wenner, B. R., Yancy, W. S., Eisenson, H., Musante, G., Surwit, R. S., Millington, D. S., Butler, M. D., & Svetkey, L. P.
Affiliations
  • Duke University (US)
  • Duke Medical Center (US)
Corresponding author
Newgard, Christopher B.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2009-04
Volume
9
Issue
4
Pages
311-326
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2122367003
Cited by
3,165
References
61
Citations by year
2026: 173 · 2025: 186 · 2024: 199 · 2023: 220 · 2022: 250 · 2021: 297 · 2020: 249 · 2019: 208 · 2018: 257 · 2017: 177 · 2016: 201 · 2015: 153 · 2014: 167 · 2013: 153 · 2012: 130
FWCI
66.29
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5k23rr021979-02)
  • National Heart, Lung, and Blood Institute (U01HL068734)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P01DK058398)
  • National Center for Research Resources (1K23-RR-021979, K23-RR-021979)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
Keywords
branched-chain amino acids, insulin resistance, obesity, high-fat diet, metabolomic signatures, acylcarnitines, mTOR signaling, JNK phosphorylation, rapamycin, muscle, pair feeding, dietary supplementation
MeSH terms
Amino Acids, Branched-Chain, Animals, Demography, Dietary Fats, Feeding Behavior, Female, Hormones, Humans, Insulin, Insulin Resistance, Male, Middle Aged, Obesity, Mass Spectrometry, Thinness, Signal Transduction, Cytokines, Rats, Wistar, Dietary Supplements, Rats, Metabolomics, Metabolome

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