Abstract
Ten male Wistar-albino rats were overfed with high-fat diet (margarine at the dose 40 g/kg body weight/day in addition to standard rat diet) during six months from the age of between 8-12 weeks. Ten male rats received a standard chow for the same period. The body weights of the overfed rats increased time dependently (basal 171.5 +/- 5, at sixth month 268 +/- 19 g), whereas those of the rats fed with standard chow did not increase significantly (basal 177 +/- 6.4, at sixth month 220 +/- 10 g). At the sixth month, mean body fat percentages were 36.3 +/- 6.7% and 24.2 +/- 5.4% respectively. Both total cholesterol-triglyceride levels and mean serum leptin levels were also higher than in the overfed rats (p < 0.01 and p < 0.05 respectively). The livers of all rats were histopathologically normal. High-fat diet resulting in an increased body fat percentage in rats is associated with hyperleptinemia, hypercholesterolemia and hypertriglyceridemia.
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