Effects of margarine supplemented with T10C12 and C9T11 CLA on atherosclerosis and steatosis in apoE/LDLR -/- mice |
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Authors: | Renata B Kostogrys M Franczyk-?arow E Maslak M Gajda ? Mateuszuk S Ch?opicki |
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Institution: | Department of Human Nutrition, Faculty of Food Technology, Agricultural University of Kraków, ul. Balicka 122, 30-149 Kraków, Poland. rkostogrys@ar.krakow.pl |
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Abstract: | Objectives The objective of this study was to evaluate functional effects of margarine supplemented with individual CLA isomers trans-10, cis-12 and cis-9, trans-11 in apoE/LDLR -/- mice. Design In LONG experiment (LONG), two-month old mice with no atherosclerosis were assigned to experimental groups and fed for the next 4 months. In SHORT experiment (SHORT), four-month old mice, with pre-established atherosclerosis, were assigned to experimental groups and fed for the next 2 months. The experimental diets were: ALN-93G (margarine), AIN-93G + 0.5% trans-10, cis-12 CLA (tl0cl2), and AIN-93G + 0.5% cis-9, trans-11 CLA (c9tll). Results In both experiments (LONG and SHORT), liver weight was significantly (P<0.05) increased in mice fed t110c12 CLA. Hepatic steatosis was found in animals fed t110c12 diet and no signs of the steatosis was observed in mice fed c9tll CLA. Dietary treatments with t110c12 CLA significantly increased total plasma cholesterol and plasma triacylglycerols. There were no isomer-specific effects of CLA isomers on area of atherosclerotic plaque in aortic root. Conclusion In conclusion, t110c12 CLA significantly increased liver weight in mice in LONG and SHORT experiments. Our results do not support the notion that CLA isomer supplementation to the margarine possess anti-atheroclerotic effect. Therefore, no isomer-specific effects of CLA on development of atherosclerosis were observed. |
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