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Pakistan Journal of Nutrition
  Year: 2014 | Volume: 13 | Issue: 4 | Page No.: 223-233
DOI: 10.3923/pjn.2014.223.233
High-Fat Diets Rich in N-3 Polyunsaturated Fatty Acids Delay Onset of Insulin Resistance in Rats
A.W. Tekeleselassie, M.A. Rajion, Y.M. Goh, M. Moteshakeri, A.F Soleimani and M. Ebrahimi

Abstract:
Insulin resistance is a growing worldwide syndrome that predispose human to a number of chronic diseases such as diabetes and cardiovascular diseases. Various studies have indicated that insulin action is highly influenced by diet compositions particularly dietary fat intake and proportion of n-3 and n-6 Polyunsaturated Fatty Acids (PUFA). The current study was designed to assess the influence of High Fat Diet (HFD) with different n-6: n-3 Fatty Acid Ratios (FAR) on insulin sensitivity, plasma triacylglycerol (TAG) and lipoprotein profile. Forty male Sprague-Dawley rats were randomly allocated into four groups and received the isocaloric high fat diets enriched with either high n-6: n-3 fatty acid ratio (HFAR), medium n-6: n-3 fatty acid ratio (MFAR), low n-6: n-3 fatty acid ratio (LFAR) and compared with control rats fed standard chow (CTRL). The plasma insulin level of HFAR fed rats manifested significantly (P<0.05) higher concentration in most of the time points compared to the other groups. The corresponding insulin AUC (ng/L/120min) and insulin sensitivity index of HFAR fed rats appeared to be significantly higher (P<0.05) than CTRL (335.5±38.5), LFAR (273.7±37.6) and MFAR (265.9±21.7) groups. Blood lipid profile were found to be healthier in the LFAR and MFAR supplemented groups with significantly (P<0.05) lower total cholesterol and TAG levels. This study showed the possible protective effect against insulin resistance when low n-6: n-3 fatty acid ratio in high fat diets are applied in a rat model.
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How to cite this article:

A.W. Tekeleselassie, M.A. Rajion, Y.M. Goh, M. Moteshakeri, A.F Soleimani and M. Ebrahimi, 2014. High-Fat Diets Rich in N-3 Polyunsaturated Fatty Acids Delay Onset of Insulin Resistance in Rats. Pakistan Journal of Nutrition, 13: 223-233.

DOI: 10.3923/pjn.2014.223.233

URL: https://scialert.net/abstract/?doi=pjn.2014.223.233

 
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