PMID- 32540489 OWN - NLM STAT- MEDLINE DCOM- 20210203 LR - 20210203 IS - 1095-6840 (Electronic) IS - 0016-6480 (Linking) VI - 296 DP - 2020 Sep 15 TI - Gemfibrozil improves lipid metabolism in Nile tilapia Oreochromis niloticus fed a high-carbohydrate diet through peroxisome proliferator activated receptor-alpha activation. PG - 113537 LID - S0016-6480(20)30290-2 [pii] LID - 10.1016/j.ygcen.2020.113537 [doi] AB - High carbohydrate diet (HCD) can induce lipid metabolism disorder, characterized by excessive lipid in farmed fish. Peroxisome proliferator activated receptor-alpha (PPARalpha) plays an important role in lipid homeostasis. In this study, we hypothesize that PPARalpha can improve lipid metabolism in fish fed HCD. Fish (3.03 +/- 0.11 g) were fed with three diets: control (30% carbohydrate), HCD (45% carbohydrate) and HCG (HCD supplemented with 200 mg/kg gemfibrozil, an agonist of PPARalpha) for eight weeks. The fish fed HCG had higher growth rate and protein effiency than those fed the HCD diet, whereas the opposite trend was observed in feed conversion ratio, hepatosomatic index and mesenteric fat index. Additionally, fish fed HCG significantly decreased lipid accumulation in the whole body, liver and adipose tissues compared to those fed the HCD diet. Furthermore, fish in the HCG group significantly increased the mRNA and protein expression and protein dephosphorylation of PPARalpha. The HCG group also significantly increased the mRNA level of the downstream target genes of PPARalpha, whereas the opposite trend occured in the mRNA level of lipolysis-related genes compared to the HCD group. Besides, fish in the HCG group remarkably decreased the contents of alanine aminotransferase, aspartate aminotransferase and malondialdehyde, whereas the opposite occured in the activities of antioxidative enzymes and anti-inflammatory cytokine genes compared to the HCD group. This study indicates that gemfibrozil can improve lipid metabolism and maintain high antioxidant and anti-inflammatory capacity through activating PPARalpha in Nile tilapia fed a high carbohydrate diet. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Luo, Yuan AU - Luo Y AD - Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, China. FAU - Hu, Chun-Ting AU - Hu CT AD - Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, China. FAU - Qiao, Fang AU - Qiao F AD - Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, China. FAU - Wang, Xiao-Dan AU - Wang XD AD - Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, China. FAU - Qin, Jian G AU - Qin JG AD - College of Science and Engineering, Flinders University, Adelaide, SA 5001, Australia. FAU - Du, Zhen-Yu AU - Du ZY AD - Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, China. Electronic address: zydu@bio.ecnu.edu.cn. FAU - Chen, Li-Qiao AU - Chen LQ AD - Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, China. Electronic address: lqchen@bio.ecnu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200612 PL - United States TA - Gen Comp Endocrinol JT - General and comparative endocrinology JID - 0370735 RN - 0 (Antioxidants) RN - 0 (Dietary Carbohydrates) RN - 0 (PPAR alpha) RN - 0 (RNA, Messenger) RN - Q8X02027X3 (Gemfibrozil) SB - IM MH - Adipose Tissue/drug effects/metabolism MH - Animals MH - Antioxidants/metabolism MH - Body Composition/drug effects MH - Cichlids/blood/genetics/growth & development/*metabolism MH - Diet MH - Dietary Carbohydrates/*pharmacology MH - *Feeding Behavior MH - Gemfibrozil/*pharmacology MH - Inflammation/genetics/pathology MH - Lipid Metabolism/*drug effects MH - Liver/drug effects/metabolism MH - PPAR alpha/*metabolism MH - Phosphorylation/drug effects MH - RNA, Messenger/genetics/metabolism MH - Stress, Physiological/genetics OTO - NOTNLM OT - Gemfibrozil OT - High carbohydrate diet OT - Lipid accumulation OT - Oreochromis niloticus OT - PPARalpha activation EDAT- 2020/06/17 06:00 MHDA- 2021/02/04 06:00 CRDT- 2020/06/17 06:00 PHST- 2019/11/09 00:00 [received] PHST- 2020/05/27 00:00 [revised] PHST- 2020/06/08 00:00 [accepted] PHST- 2020/06/17 06:00 [pubmed] PHST- 2021/02/04 06:00 [medline] PHST- 2020/06/17 06:00 [entrez] AID - S0016-6480(20)30290-2 [pii] AID - 10.1016/j.ygcen.2020.113537 [doi] PST - ppublish SO - Gen Comp Endocrinol. 2020 Sep 15;296:113537. doi: 10.1016/j.ygcen.2020.113537. Epub 2020 Jun 12.