title: Micronutrients-fortified rapeseed oil improves hepatic lipid accumulation and oxidative stress in rats fed a high-fat diet.
abstract: Intake of high-fat diet is associated with increased fatty livers. Hepatic lipid accumulation and oxidative stress are key pathophysiological mechanisms in this disease. Micronutrients polyphenols, tocopherols and phytosterols in rapeseed exert potential benefit to hepatoprotection, but most of these micronutrients are removed by the traditional refining process. The purpose of the present study was to determine whether rapeseed oil fortified with these micronutrients can decrease hepatic lipid accumulation and oxidative stress induced by high-fat diet. Sprague-Dawley rats received rodent diet contained 20% fat whose source was refined rapeseed oil (RRO) or fortified RRO with low, middle and high quantities of these micronutrients for 10 weeks. Intake of RRO caused a remarkable hepatic steatosis. Micronutrients supplementation was effective in reducing steatosis as well as total triglyceride and total cholesterol contents in liver. These micronutrients also significantly increased hepatic antioxidant defense capacities, as evaluated by the significant elevation in the activities of SOD and GPx as well as the level of GSH, and the significant decline in lipid peroxidation. These findings suggest that rapeseed oil fortified with micronutrients polyphenols, tocopherols and phytosterols may contribute to prevent fatty livers such as nonalcoholic fatty liver disease by ameliorating hepatic lipid accumulation and oxidative stress.
authors.forename: Jiqu
authors.initials: J
authors.lastname: Xu
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Zhou
authors.forename: Hui
authors.initials: H
authors.lastname: Gao
authors.forename: Chang
authors.initials: C
authors.lastname: Chen
authors.forename: Qianchun
authors.initials: Q
authors.lastname: Deng
authors.forename: Qingde
authors.initials: Q
authors.lastname: Huang
authors.forename: Jing
authors.initials: J
authors.lastname: Ma
authors.forename: Zhengyang
authors.initials: Z
authors.lastname: Wan
authors.forename: Jin'e
authors.initials: J
authors.lastname: Yang
authors.forename: Fenghong
authors.initials: F
authors.lastname: Huang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000378:metabolism; D059305:Diet, High-Fat; D005229:Fatty Acids, Monounsaturated; D005527:Food, Fortified; D050356:Lipid Metabolism / Q000187:drug effects*; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D008297:Male; D018977:Micronutrients / Q000494:pharmacology*; D018384:Oxidative Stress / Q000187:drug effects; D010938:Plant Oils; D000074262:Rapeseed Oil; D017207:Rats, Sprague-Dawley; D013482:Superoxide Dismutase / Q000378:metabolism; D024505:Tocopherols / Q000378:metabolism; D014280:Triglycerides / Q000378:metabolism
chemical_list: D000975:Antioxidants; D005229:Fatty Acids, Monounsaturated; D018977:Micronutrients; D010938:Plant Oils; D000074262:Rapeseed Oil; D014280:Triglycerides; D013482:Superoxide Dismutase; D024505:Tocopherols