Journal
JOURNAL OF TOXICOLOGICAL SCIENCES
Volume 38, Issue 3, Pages 379-390Publisher
JAPANESE SOC TOXICOLOGICAL SCIENCES
DOI: 10.2131/jts.38.379
Keywords
Bile acid; Non-alcoholic fatty liver disease; Free cholesterol; Cholesteryl oleate; Monounsaturated fatty acid; Polyunsaturated fatty acid
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [23590873]
- Grants-in-Aid for Scientific Research [23590873] Funding Source: KAKEN
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The administration of a sodium cholate-supplemented high-fat (CAHF) diet in mice induced the predominant accumulation of cholesterol esters (CE) in the liver and biochemical and histological features of liver injury. Cholesteryl oleate was the most abundant CE found in the liver of the mice fed the CAHF diet. We examined the effect of ethyl eicosapentaenoate (EPA) on hepatic CE accumulation and liver injury in the mice fed the CAHF diet. The EPA supplementation suppressed the elevation in the level of cholesteryl oleate in the liver. The expression levels of sterol O-acyltransferase-2 and stearoyl-CoA desaturase-1 mRNA in the liver were elevated in the mice fed the CAHF diet, but they were normalized by the EPA supplementation. However, the elevation in serum transaminase activity, the sign of inflammatory cell exudation and inflammatory gene responses in the liver of the mice fed the EPA-supplemented diet were enhanced compared with those of the mice fed the CAHF diet. We demonstrated that EPA supplementation attenuated CE accumulation but aggravated liver injury and liver inflammation in the mice fed the CAHF diet.
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