Caffeine attenuates metabolic syndrome in diet-induced obese rats

Panchal, Sunil K. and Wong, Weng-Yew and Kauter, Kate and Ward, Leigh C. and Brown, Lindsay (2012) Caffeine attenuates metabolic syndrome in diet-induced obese rats. Nutrition, 28 (10). pp. 1055-1062. ISSN 0899-9007

Abstract

Objective: Caffeine is a constituent of many non-alcoholic beverages. Pharmacological actions of caffeine include the antagonism of adenosine receptors and the inhibition of phosphodiesterase activity. The A1 adenosine receptors present on adipocytes are involved in the control of fatty acid uptake and lipolysis. In this study, the effects of caffeine were characterized in a diet-induced metabolic syndrome in rats.
Methods: Rats were given a high-carbohydrate, high-fat diet (mainly containing fructose and beef tallow) for 16 wk. The control rats were given a corn starch diet. Treatment groups were given caffeine 0.5 g/kg of food for the last 8 wk of the 16-wk protocol. The structure and function of the
heart and the liver were investigated in addition to the metabolic parameters including the plasma lipid components.
Results: The high-carbohydrate, high-fat diet induced symptoms of metabolic syndrome, including obesity, dyslipidemia, impaired glucose tolerance, decreased insulin sensitivity, and increased systolic blood pressure, associated with the development of cardiovascular remodeling and nonalcoholic steatohepatitis. The treatment with caffeine in the rats fed the high-carbohydrate, high-fat diet decreased body fat and systolic blood pressure, improved glucose tolerance and insulin sensitivity, and attenuated cardiovascular and hepatic abnormalities, although the plasma lipid concentrations were further increased.
Conclusion: Decreased total body fat, concurrent with increased plasma lipid concentrations, reflects the lipolytic effects of caffeine in adipocytes, likely owing to the caffeine antagonism of A1 adenosine receptors on adipocytes.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2012 Elsevier Inc. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 02 Feb 2013 06:14
Last Modified: 13 Feb 2015 02:20
Uncontrolled Keywords: obesity; cardiovascular remodeling; metabolic syndrome; dyslipidemia; adenosine receptor
Fields of Research : 11 Medical and Health Sciences > 1101 Medical Biochemistry and Metabolomics > 110107 Metabolic Medicine
11 Medical and Health Sciences > 1111 Nutrition and Dietetics > 111103 Nutritional Physiology
11 Medical and Health Sciences > 1102 Cardiovascular Medicine and Haematology > 110201 Cardiology (incl. Cardiovascular Diseases)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970111 Expanding Knowledge in the Medical and Health Sciences
Identification Number or DOI: 10.1016/j.nut.2012.02.013
URI: http://eprints.usq.edu.au/id/eprint/21835

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