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Erschienen in: Inflammation Research 10/2011

01.10.2011 | Original Research Paper

Inflammation inhibits GPR81 expression in adipose tissue

verfasst von: Kenneth R. Feingold, Arthur Moser, Judy K. Shigenaga, Carl Grunfeld

Erschienen in: Inflammation Research | Ausgabe 10/2011

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Abstract

Objective and design

The aim of this study was to examine the expression of G protein-coupled receptor 81 (GPR81) in mouse adipose tissue in response to inflammatory stimuli. GPR81 is activated by lactate resulting in the inhibition of lipolysis.

Materials and treatment

Mice were injected with saline, lipopolysaccharide (LPS), zymosan, or turpentine, N = 5 per group. 3T3-L1 adipocytes were treated with tumor necrosis factor alpha, interleukin (IL)-l beta, IL-6, or interferon gamma.

Methods

GPR81 expression levels were measured by real-time PCR and statistical significance was determined by Student’s t test.

Results

LPS resulted in a marked decrease in GPR81 mRNA level in mouse adipose tissue in C57BL/6 and OuJ mice, an effect that was not observed in HeJ mice, which have a mutation in TLR4. Zymosan and turpentine also decreased adipose tissue GPR81expression. Cytokine treatment of 3T3-L1 adipocytes had no effect on GPR81 expression. GPR81 expression was decreased in ob/ob mice, an animal model of type 2 diabetes that is characterized by inflammation.

Conclusion

Inflammation decreases the expression of GPR81 in adipose tissue.
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Metadaten
Titel
Inflammation inhibits GPR81 expression in adipose tissue
verfasst von
Kenneth R. Feingold
Arthur Moser
Judy K. Shigenaga
Carl Grunfeld
Publikationsdatum
01.10.2011
Verlag
SP Birkhäuser Verlag Basel
Erschienen in
Inflammation Research / Ausgabe 10/2011
Print ISSN: 1023-3830
Elektronische ISSN: 1420-908X
DOI
https://doi.org/10.1007/s00011-011-0361-2

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