Hypolipidemic Effect of Rice Bran Oil Extract Tocotrienol in High-Fat Diet-Induced Hyperlipidemia Zebrafish (Danio Rerio) Induced by High-Fat Diet
文献类型： 外文期刊
作者： Liu, Naicheng 1 ; Zhang, Peng 1 ; Xue, Mingyang 1 ; Zhang, Mengwei 1 ; Huang, Zhenyu 1 ; Xu, Chen 1 ; Meng, Yan 1 ; Fan, Yuding 1 ; Liu, Wei 1 ; Zhang, Feixiang 1 ; Chen, Peng 3 ; Zhou, Yong 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries & Life, Shanghai 201306, Peoples R China
3.Inst Fishery Res Xinjiang Uygur Autonenous Reg, Urumqi 830099, Peoples R China
关键词： rice bran oil extract; tocotrienol (T3); zebrafish; type 2 diabetes mellitus (T2DM) model; high-fat diet; blood fat
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2024 年 25 卷 5 期
页码：
收录情况： SCI
摘要： In recent years, the potent influence of tocotrienol (T3) on diminishing blood glucose and lipid concentrations in both Mus musculus (rats) and Homo sapiens (humans) has been established. However, the comprehensive exploration of tocotrienol's hypolipidemic impact and the corresponding mechanisms in aquatic species remains inadequate. In this study, we established a zebrafish model of a type 2 diabetes mellitus (T2DM) model through high-fat diet administration to zebrafish. In the T2DM zebrafish, the thickness of ocular vascular walls significantly increased compared to the control group, which was mitigated after treatment with T3. Additionally, our findings demonstrate the regulatory effect of T3 on lipid metabolism, leading to the reduced synthesis and storage of adipose tissue in zebrafish. We validated the expression patterns of genes relevant to these processes using RT-qPCR. In the T2DM model, there was an almost two-fold upregulation in ppar gamma and cyp7a1 mRNA levels, coupled with a significant downregulation in cpt1a mRNA (p < 0.01) compared to the control group. The ELISA revealed that the protein expression levels of Ppar gamma and Rxr alpha exhibited a two-fold elevation in the T2DM group relative to the control. In the T3-treated group, Ppar gamma and Rxr alpha protein expression levels consistently exhibited a two-fold decrease compared to the model group. Lipid metabolomics showed that T3 could affect the metabolic pathways of zebrafish lipid regulation, including lipid synthesis and decomposition. We provided experimental evidence that T3 could mitigate lipid accumulation in our zebrafish T2DM model. Elucidating the lipid-lowering effects of T3 could help to minimize the detrimental impacts of overfeeding in aquaculture.
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