Dietary enrichment of apolipoprotein E-deficient mice with extra virgin olive oil in combination with seal oil inhibits atherogenesis

• Published in: Lipids in health and disease Vol. 10; no. 1; p. 41
• Main Authors: Eilertsen, Karl-Erik, Mæhre, Hanne K, Cludts, Katrien, Olsen, Jan O, Hoylaerts, Marc F
• Format: Journal Article
• Language: English
• Published: England BioMed Central 03.03.2011; BioMed Central Ltd; BMC
• Subjects: Animals; Apolipoproteins E - deficiency; Atherosclerosis - pathology; Atherosclerosis - prevention & control; Cardiovascular disease; Cholesterol; Cholesterol - blood; Diet; Diet, Mediterranean; Dietary Supplements; Ernæring: 811; Fatty acids; Fatty Acids, Omega-3 - administration & dosage; Female; Food science and technology: 600; Health sciences: 800; Helsefag: 800; Hyperlipoproteinemia Type III - physiopathology; Male; Medical disciplines: 700; Medisinske Fag: 700; Mice; Nutrition; Nutrition: 811; Næringsmiddelteknologi: 600; Olive Oil; Plant Oils - administration & dosage; Rodents; Technology: 500; Teknologi: 500; Triglycerides - blood; VDP
• ISSN: 1476-511X; 1476-511X
• DOI: 10.1186/1476-511X-10-41

In this study we investigated the antiatherogenic effect of dietary enrichment of a combination of extra virgin olive oil (EVO) and seal oil on apolipoprotein E-deficient (apoE-/-). Six-week-old female and male apoE-/- mice were for 12 weeks fed a lipid rich diet containing 19.5% fat and 1.25% cholesterol without any supplement, with 1% (wt/wt) mixture of extra virgin olive and seal oil (EVO/n-3), or 1% corn oil, respectively. Supplementation with the combination of EVO/n-3 significantly reduced atherosclerotic lesion formation in the aortic arch, thoracoabdominal, and total aorta of female apoE-/-mice. The effect was less pronounced in male mice and significant reduction was only observed in the thoracoabdominal region of the aorta. There were no differences or changes in dietary intake or body weight gain. However, compared to the other groups, plasma levels of triglycerides were reduced in both female and male mice fed the EVO/n-3 mixture. Male mice on both treatments showed reduced plasma cholesterol compared to the control mice after 12 weeks on diet. Dietary supplementation of a marine/olive oil combination inhibits atherosclerotic lesion formation in the female apoE-/- mice by antithrombotic, antihypertriglyceridemic, and antioxidant effects.