Thermoneutrality results in prominent diet‐induced body weight differences in C57BL/6J mice, not paralleled by diet‐induced metabolic differences. Issue 4 (18th November 2013)

• Record Type: Journal Article
• Authors: Hoevenaars, Femke P. M.; Bekkenkamp‐Grovenstein, Melissa; Janssen, Rolf J. R. J.; Heil, Sandra G.; Bunschoten, Annelies; Hoek‐van den Hil, Elise F.; Snaas‐Alders, Sophie; Teerds, Katja; van, Evert M.; Keijer, Jaap
• Is Part Of: Molecular nutrition & food research. Volume 58:Issue 4(2014:Apr.)
• Page Start: 799
• Page End: 807
• Publication Date: 2013-11-18
• Subjects: Food -- Biotechnology -- Periodicals; Food -- Microbiology -- Periodicals; Nutrition -- Periodicals; Food -- Toxicology -- Periodicals; Nutrition -- Periodicals; Food Microbiology -- Periodicals; Food Technology -- Periodicals; Molecular Biology -- Periodicals; 664.0705
• DOI: 10.1002/mnfr.201300285
• Languages: English
• ISSNs: 1613-4125

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="mnfr2110-sec-0010" sec-type="section"> <title>Scope</title> <p>Mice are usually housed at 20–24°C. At thermoneutrality (28°C) larger diet‐induced differences in obesity are seen. We tested whether this leads to large differences in metabolic health parameters.</p> </sec> <sec id="mnfr2110-sec-0020" sec-type="section"> <title>Methods and results</title> <p>We performed a 14‐wk dietary intervention in C57BL/6J mice at 28°C and assessed adiposity and metabolic health parameters for a semipurified low fat (10 energy%) diet and a moderate high fat (30 energy%) diet. A large and significant diet‐induced differential increase in body weight, adipose tissue mass, adipocyte size, serum leptin level, and, to some extent, cholesterol level was observed. No adipose tissue inflammation was seen. No differential effect of the diets on serum glucose, free fatty acids, triacylglycerides, insulin, adiponectin, resistin, PAI‐1, MMP‐9, sVCAM‐1, sICAM‐1, sE‐selectin, IL‐6, ApoE, fibrinogen levels, or HOMA index was observed. Also in muscle no differential effect on mitochondrial density, mitochondrial respiratory control ratio, or mRNA expression of metabolic genes was found. Finally, in liver no differential effect on weight, triacylglycerides level, aconitase/citrate synthase activity ratio was seen.</p> </sec> <sec id="mnfr2110-sec-0030" sec-type="section"> <title>Conclusion</title> <p>Low fat diet and moderate high fat diet induce prominent body weight differences at thermoneutrality, which is not paralleled by metabolic differences. Our data rather suggest that thermoneutrality alters metabolic homeostasis.</p> </sec> </abstract>