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Cited by 552

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

The Farnesoid X Receptor Modulates Adiposity and Peripheral Insulin Sensitivity in Mice

Open access
Cariou, Bertrand, van Harmelen, Kirsten, Duran-Sandoval, Daniel, van Dijk, Theo H., Grefhorst, Aldo, Abdelkarim, Mouaadh, Caron, Sandrine, Torpier, Gérard, Fruchart, Jean-Charles, Gonzalez, Frank J, Kuipers, Folkert, Staels, Bart·2006·Journal of Biological Chemistry

Abstract

The farnesoid X receptor (FXR) is a bile acid (BA)-activated nuclear receptor that plays a major role in the regulation of BA and lipid metabolism. Recently, several studies have suggested a potential role of FXR in the control of hepatic carbohydrate metabolism, but its contribution to the maintenance of peripheral glucose homeostasis remains to be established. FXR-deficient mice display decreased adipose tissue mass, lower serum leptin concentrations, and elevated plasma free fatty acid levels. Glucose and insulin tolerance tests revealed that FXR deficiency is associated with impaired glucose tolerance and insulin resistance. Moreover, whole-body glucose disposal during a hyperinsulinemic euglycemic clamp is decreased in FXR-deficient mice. In parallel, FXR deficiency alters distal insulin signaling, as reflected by decreased insulin-dependent Akt phosphorylation in both white adipose tissue and skeletal muscle. Whereas FXR is not expressed in skeletal muscle, it was detected at a low level in white adipose tissue in vivo and induced during adipocyte differentiation in vitro. Moreover, mouse embryonic fibroblasts derived from FXR-deficient mice displayed impaired adipocyte differentiation, identifying a direct role for FXR in adipocyte function. Treatment of differentiated 3T3-L1 adipocytes with the FXR-specific synthetic agonist GW4064 enhanced insulin signaling and insulin-stimulated glucose uptake. Finally, treatment with GW4064 improved insulin resistance in genetically obese ob/ob mice in vivo. Although the underlying molecular mechanisms remain to be unraveled, these results clearly identify a novel role of FXR in the regulation of peripheral insulin sensitivity and adipocyte function. This unexpected function of FXR opens new perspectives for the treatment of type 2 diabetes.

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Crossref · 10.1074/jbc.m510258200

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Metadata

Authors
Cariou, B., van Harmelen, K., Duran-Sandoval, D., van Dijk, T. H., Grefhorst, A., Abdelkarim, M., Caron, S., Torpier, G., Fruchart, J.-C., Gonzalez, F. J., Kuipers, F., & Staels, B.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2006-04
Volume
281
Issue
16
Pages
11039-11049
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2106678312
Cited by
552
References
2
FWCI
17.26
Type
journal article
Language
en
Open access
hybrid

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