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Fjære E, Aune UL, Røen K, Keenan AH, Ma T, Borkowski K, Kristensen DM, Novotny GW, Mandrup-Poulsen T, Hudson BD, Milligan G, Xi Y, Newman JW, Haj FG, Liaset B, Kristiansen K, Madsen L. Indomethacin treatment prevents high fat diet-induced obesity and insulin resistance but not glucose intolerance in C57BL/6J mice. J Biol Chem 2014; 289:16032-45. [PMID: 24742673 DOI: 10.1074/jbc.m113.525220] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Chronic low grade inflammation is closely linked to obesity-associated insulin resistance. To examine how administration of the anti-inflammatory compound indomethacin, a general cyclooxygenase inhibitor, affected obesity development and insulin sensitivity, we fed obesity-prone male C57BL/6J mice a high fat/high sucrose (HF/HS) diet or a regular diet supplemented or not with indomethacin (±INDO) for 7 weeks. Development of obesity, insulin resistance, and glucose intolerance was monitored, and the effect of indomethacin on glucose-stimulated insulin secretion (GSIS) was measured in vivo and in vitro using MIN6 β-cells. We found that supplementation with indomethacin prevented HF/HS-induced obesity and diet-induced changes in systemic insulin sensitivity. Thus, HF/HS+INDO-fed mice remained insulin-sensitive. However, mice fed HF/HS+INDO exhibited pronounced glucose intolerance. Hepatic glucose output was significantly increased. Indomethacin had no effect on adipose tissue mass, glucose tolerance, or GSIS when included in a regular diet. Indomethacin administration to obese mice did not reduce adipose tissue mass, and the compensatory increase in GSIS observed in obese mice was not affected by treatment with indomethacin. We demonstrate that indomethacin did not inhibit GSIS per se, but activation of GPR40 in the presence of indomethacin inhibited glucose-dependent insulin secretion in MIN6 cells. We conclude that constitutive high hepatic glucose output combined with impaired GSIS in response to activation of GPR40-dependent signaling in the HF/HS+INDO-fed mice contributed to the impaired glucose clearance during a glucose challenge and that the resulting lower levels of plasma insulin prevented the obesogenic action of the HF/HS diet.
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Affiliation(s)
- Even Fjære
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark, the National Institute of Nutrition and Seafood Research, 5817 Bergen, Norway
| | - Ulrike L Aune
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark, the National Institute of Nutrition and Seafood Research, 5817 Bergen, Norway
| | - Kristin Røen
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark
| | - Alison H Keenan
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark, the Departments of Nutrition and
| | - Tao Ma
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark
| | - Kamil Borkowski
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark
| | - David M Kristensen
- the INSERM U1085-IRSET, Université de Rennes 1, Rennes, France, the Department of Biomedical Sciences, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Guy W Novotny
- the Section for Endocrinological Research, Department of Biomedical Sciences, University of 2200 Copenhagen, Copenhagen, Denmark
| | - Thomas Mandrup-Poulsen
- the Section for Endocrinological Research, Department of Biomedical Sciences, University of 2200 Copenhagen, Copenhagen, Denmark, the Department of Molecular Medicine and Surgery, Karolinska Institute, 171 77 Solna, Sweden
| | - Brian D Hudson
- the Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom, and
| | - Graeme Milligan
- the Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom, and
| | | | - John W Newman
- the Departments of Nutrition and the United States Department of Agriculture-Agricultural Research Service-Western Human Nutrition Research Center, Davis, California 95616
| | - Fawaz G Haj
- the Departments of Nutrition and Internal Medicine, University of California, Davis, California 95616
| | - Bjørn Liaset
- the National Institute of Nutrition and Seafood Research, 5817 Bergen, Norway
| | - Karsten Kristiansen
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark,
| | - Lise Madsen
- From the Department of Biology, University of Copenhagen, 1165 Copenhagen, Denmark, the National Institute of Nutrition and Seafood Research, 5817 Bergen, Norway,
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