Abstract:
BACKGROUND AND AIMS:Oxidative modification of lipoproteins is a crucial step in atherosclerosis development. Isotopic-reinforced polyunsaturated fatty acids (D-PUFAs) are more resistant to reactive oxygen species-initiated chain reaction of lipid peroxidation than regular hydrogenated (H-)PUFAs. We aimed at investigating the effect of D-PUFA treatment on lipid peroxidation, hypercholesterolemia and atherosclerosis development. METHODS:Transgenic APOE*3-Leiden.CETP mice, a well-established model for human-like lipoprotein metabolism, were pre-treated with D-PUFAs or control H-PUFAs-containing diet (1.2%, w/w) for 4 weeks. Thereafter, mice were fed a Western-type diet (containing 0.15% cholesterol, w/w) for another 12 weeks, while continuing the D-/H-PUFA treatment. RESULTS:D-PUFA treatment markedly decreased hepatic and plasma F2-isoprostanes (approx. -80%) and prostaglandin F2α (approx. -40%) as compared to H-PUFA treatment. Moreover, D-PUFAs reduced body weight gain during the study (-54%) by decreasing body fat mass gain (-87%) without altering lean mass. D-PUFAs consistently reduced plasma total cholesterol levels (approx. -25%), as reflected in reduced plasma non-HDL-cholesterol (-28%). Additional analyses of hepatic cholesterol metabolism indicated that D-PUFAs reduced the hepatic cholesterol content (-21%). Sterol markers of intestinal cholesterol absorption and cholesterol breakdown were decreased. Markers of cholesterol synthesis were increased. Finally, D-PUFAs reduced atherosclerotic lesion area formation throughout the aortic root of the heart (-26%). CONCLUSIONS:D-PUFAs reduce body weight gain, improve cholesterol handling and reduce atherosclerosis development by reducing lipid peroxidation and plasma cholesterol levels. D-PUFAs, therefore, represent a promising new strategy to broadly reduce rates of lipid peroxidation, and combat hypercholesterolemia and cardiovascular diseases.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Berbée JFP,Mol IM,Milne GL,Pollock E,Hoeke G,Lütjohann D,Monaco C,Rensen PCN,van der Ploeg LHT,Shchepinov MSdoi
10.1016/j.atherosclerosis.2017.06.916subject
Has Abstractpub_date
2017-09-01 00:00:00pages
100-107eissn
0021-9150issn
1879-1484pii
S0021-9150(17)31165-6journal_volume
264pub_type
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