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Long Chain Saturated Fatty Acids Increase Haptoglobin Gene Expression in C57BL/6J Mice Adipose Tissue and 3T3-L1 Cells

Bueno, Allain and Oyama, L.M. and Motoyama, C.S.M. and Biz, C. and Silveira, V.L.F. and Ribeiro, E.B. and Oller do Nascimento, C.M. (2009) Long Chain Saturated Fatty Acids Increase Haptoglobin Gene Expression in C57BL/6J Mice Adipose Tissue and 3T3-L1 Cells. European Journal of Nutrition, 49 (4). pp. 235-241. ISSN Print 1436-6207 Online 1436-6215

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Abstract

Background Dietary lipids are directly related to the composition of adipose tissue, aetiology of obesity and arousal of obesity-related pathologies, like chronic inflammation states. Haptoglobin is an acute phase protein secreted by the liver and white adipose tissue, and its blood levels vary according to the volume of fat in the body. Aim of the study To investigate the effect of diets enriched with large amounts of dietary fats, which differ in their fatty acid composition, on the haptoglobin gene expression by visceral and subcutaneous adipose tissue of mice fed for 2 days or 8 weeks. 3T3-L1 cells were treated with fatty acids that are found in those types of dietary fats. Methods Mice were treated acutely (for 2 days) or chronically (for 8 weeks) with diets enriched with soybean oil, fish oil, coconut oil or lard. 3T3-L1 cells were treated with six different fatty acids. Haptoglobin gene expression was quantified by northern blotting. Results Both chronic and acute treatment with lard, which is rich in long chain saturated fatty acids, increased the haptoglobin mRNA expression in the retroperitoneal and epidydimal white adipose tissues. Chronic treatment with coconut oil, which is rich in medium chain saturated fatty acids, increased the haptoglobin expression in the epidydimal and subcutaneous depots. In 3T3-L1, palmitic acid increased the haptoglobin gene expression. Conclusion The type of lipids in the diet can differently modulate the white adipose tissue gene expression of haptoglobin, and saturated fatty acids play a major role in promoting a pro-inflammatory environment. This response is fat pad specific and dependant on the duration of treatment.

Item Type: Article
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Uncontrolled Keywords: white adipose tissue, haptoglobin, high fat diet, Palmitic acid, Lauric acid
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history > QH301 Biology
Divisions: Academic Departments > Institute of Science and the Environment
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Depositing User: Tanya Buchanan
Date Deposited: 12 Aug 2016 13:24
Last Modified: 12 Aug 2016 13:24
URI: https://eprints.worc.ac.uk/id/eprint/4808

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