The Metabolism and Function of Lipids and Fatty Acids in Fishes

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Nutrition and Feeding".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 1087

Special Issue Editors

College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
Interests: fish nutrition; fish feeds; lipid nutrition; lipid metabolism; polyunsaturated fatty acids; linoleic acid; linolenic acid; EPA; DHA

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Guest Editor
Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China
Interests: lipid metabolism; gut-liver axis; autophagy/lipophagy; arachidonic acid; eicosanoids; fillet quality; feed nutrition; feed resources; bile acids; gut microbiota; water environment-fish interaction

Special Issue Information

Dear Colleagues,

Lipids and fatty acids are the major organic constituents of fish, and they play major roles as the sources of metabolic energy for growth, reproduction and movement. Furthermore, the fatty acids of fish lipids are rich in ω3 long-chain n-3 HUFAs that have particularly important roles in animal nutrition. Indeed, fish are the most important food source of these vital nutrients for man. Thus, the longstanding interest in fish lipids stems from their abundance and uniqueness. The aim and scope of this Special Issue attempts to concentrate on the knowledge of various aspects of basic biochemistry, metabolism and function of fatty acids and lipids in fish, and highlight the areas that require investigation in greater depth, along with the increasing application of molecular technologies in fish lipid metabolism, which will further facilitate advances through molecular, biological and genetic techniques, including genomics and proteomics.

Dr. Jishu Zhou
Dr. Jingjing Tian
Guest Editors

Manuscript Submission Information

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Keywords

  • fish nutrition
  • fish feeds
  • lipid nutrition
  • lipid metabolism
  • polyunsaturated fatty acids
  • linoleic acid
  • linolenic acid
  • EPA
  • DHA

Published Papers (1 paper)

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Research

15 pages, 2429 KiB  
Article
Inhibitory Effect of Prickly Ash (Zanthoxylum bungeanum) Seed Kernel Oil on Lipid Metabolism of Grass Carp (Ctenopharyngodon idellus) in High-Fat Diet
by Ping Wang, Ziling Zhu, Qinglai Xu, Yangfen Xing, Mingyue Zhang and Jishu Zhou
Fishes 2024, 9(4), 123; https://doi.org/10.3390/fishes9040123 - 29 Mar 2024
Viewed by 601
Abstract
To investigate the effect of prickly ash (Zanthoxylum bungeanum) seed kernel oil (PASO) on the lipid metabolism of grass carp (Ctenopharyngodon idellus) under a high-fat diet, PASO were added into two lipid-level (4 g/kg and 8 g/kg) diets to [...] Read more.
To investigate the effect of prickly ash (Zanthoxylum bungeanum) seed kernel oil (PASO) on the lipid metabolism of grass carp (Ctenopharyngodon idellus) under a high-fat diet, PASO were added into two lipid-level (4 g/kg and 8 g/kg) diets to form four isonitrogenous diets: soybean oil (SO), PASO, high-fat soybean oil (HSO), and high-fat prickly ash seed oil (HPASO). A total of 216 healthy grass carp (9.43 ± 0.82 g) were randomly divided into four groups and fed with the four diets, respectively, for 56 days. The result showed that the viscerosomatic index (VSI) and the content of the crude lipid in the hepatopancreas and muscle was significantly higher by oil levels (p < 0.05). The linolenic acid content in the body of the fish significantly increased in PASO and HPASO compared to that in SO and HSO (p < 0.05). The fatty acid composition of the hepatopancreas, intraperitoneal fat, and muscle in four dietary groups was significantly similar to the fatty acid composition in the diets (p < 0.05). More significant fat infiltration and nuclear translocation in the hepatopancreas of fish was found in the HSO group but was decreased in the HPASO group. The adipocyte size in the intraperitoneal fat tissue in the PASO group was significantly lower than that in the SO group (p < 0.05). The relative mRNA expression of the lipogenesis-related genes ppar-γ, cebp-α, and srebp-1c was significantly down-regulated in the PASO group compared with the SO group (p < 0.05), and the mRNA expression of lipolysis-related genes ppar-α and cpt-1 were significantly up-regulated in the PASO group (p < 0.05). In conclusion, dietary PASO showed the function of reducing lipid accumulation in the fish. This reduction might be attributed to the inhibition of the lipogenesis-related genes and the stimulation of the lipolysis-related genes, which were probably modulated by the high content of linolenic acid in PASO. Full article
(This article belongs to the Special Issue The Metabolism and Function of Lipids and Fatty Acids in Fishes)
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