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Defective fatty acid uptake modulates insulin responsiveness and metabolic responses to diet in CD36-null mice

Hajri, Tahar, Han, Xiao Xia, Bonen, Arend, Abumrad, Nada A.·2002·Journal of Clinical Investigation

Abstract

Deficiency of the membrane protein FAT/CD36 causes a marked defect in fatty acid uptake by various tissues and is genetically linked to insulin resistance in rats and humans. Here, we examined insulin responsiveness of CD36–/– mice. When fed a diet high in complex carbohydrates and low (5%) in fat, these animals cleared glucose faster than the wild-type. In vivo, uptake of 2-fluorodeoxyglucose by muscle was increased severalfold, and in vitro, insulin responsiveness of glycogenesis by the soleus was enhanced. Null mice had lower glycogen levels in muscle and liver, lower muscle triglyceride levels, and increased liver triglyceride content—all findings consistent with increased insulin-sensitivity. However, when the chow diet was switched to one high in fructose, CD36–/– mice but not wild-type mice developed marked glucose intolerance, hyperinsulinemia, and decreased muscle glucose uptake. High-fat diets impaired glucose tolerance equally in both groups, although CD36 deficiency helped moderate insulin-responsive muscle glucose oxidation. In conclusion, CD36 deficiency enhances insulin responsiveness on a high-starch, low-fat diet. It predisposes to insulin resistance induced by high fructose and partially protects from that induced by high-fat diets. In humans, CD36 deficiency may be an important factor in the metabolic adaptation to diet and in susceptibility to some forms of diet-induced pathology.

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Metadata

Authors
Hajri, T., Han, X. X., Bonen, A., & Abumrad, N. A.
Venue
Journal of Clinical Investigation
Published
2002-05-15
Volume
109
Issue
10
Pages
1381-1389
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2134283161
Cited by
276
References
12
FWCI
6.52
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Defective fatty acid uptake modulates insulin responsiveness and metabolic responses to diet in CD36-null mice. https://app.cochat.ai/papers/10.1172/jci14596
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Hajri, T., Han, X. X., Bonen, A., & Abumrad, N. A. (2002). Defective fatty acid uptake modulates insulin responsiveness and metabolic responses to diet in CD36-null mice. Journal of Clinical Investigation. https://doi.org/10.1172/jci14596

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.