Cargando…

Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole

SIMPLE SUMMARY: In contemporary dietary formulations for aquaculture, the amounts of fishmeal are being constantly reduced, and the inclusion of plant-protein sources is now a standard procedure. This approach may result in an unbalanced supply of selected nutrients, from which taurine was identifie...

Descripción completa

Detalles Bibliográficos
Autores principales: Aragão, Cláudia, Teodósio, Rita, Colen, Rita, Richard, Nadège, Rønnestad, Ivar, Dias, Jorge, Conceição, Luís E. C., Ribeiro, Laura
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10177204/
https://www.ncbi.nlm.nih.gov/pubmed/37174538
http://dx.doi.org/10.3390/ani13091501
_version_ 1785040582835437568
author Aragão, Cláudia
Teodósio, Rita
Colen, Rita
Richard, Nadège
Rønnestad, Ivar
Dias, Jorge
Conceição, Luís E. C.
Ribeiro, Laura
author_facet Aragão, Cláudia
Teodósio, Rita
Colen, Rita
Richard, Nadège
Rønnestad, Ivar
Dias, Jorge
Conceição, Luís E. C.
Ribeiro, Laura
author_sort Aragão, Cláudia
collection PubMed
description SIMPLE SUMMARY: In contemporary dietary formulations for aquaculture, the amounts of fishmeal are being constantly reduced, and the inclusion of plant-protein sources is now a standard procedure. This approach may result in an unbalanced supply of selected nutrients, from which taurine was identified. Taurine is an amino acid that plays important physiological roles and is included in bile salts, which are essential for the emulsion, digestion, and absorption of dietary lipids and fat-soluble vitamins. In mammals, a hypolipidemic effect of taurine has been described. Senegalese sole (Solea senegalensis) is a marine fish species with increasing importance for aquaculture production in Southern European countries, with a high market value and low tolerance to dietary lipid levels. Thus, this study tested the effects of taurine supplementation to low-fishmeal diets on the physiological responses of Senegalese sole, with an emphasis on lipid metabolism. The results show that dietary inclusion of high levels of plant-protein sources to replace marine ingredients resulted in negative effects on lipid metabolism, due to the resultant low bile-acid concentration and/or the limited availability of taurine for bile-salt emulsification. Taurine supplementation mitigated part of the negative effects of plant-based diets, leading to better lipid utilisation. ABSTRACT: Taurine is a sulphur-containing amino acid with important physiological roles and a key compound for the synthesis of bile salts, which are essential for the emulsion and absorption of dietary lipids. This study aimed to evaluate the effects of taurine supplementation to low-fishmeal diets on the metabolism of taurine, bile acids, and lipids of Senegalese sole. A fishmeal (FM) and a plant-protein-based (PP0) diet were formulated, and the latter was supplemented with taurine at 0.5 and 1.5% (diets PP0.5 and PP1.5). Diets were assigned to triplicate tanks containing 35 fish (initial weight ~14 g) for 6 weeks. Fish from the PP0 treatment presented lower taurine and bile-acid concentrations compared with the FM treatment, and a downregulation of cyp7a1 and abcb11 was observed. Triolein catabolism decreased in PP0-fed fish, resulting in increased hepatic fat content and plasma triglycerides, while no effects on plasma cholesterol were observed. Taurine supplementation to plant-based diets resulted in a higher taurine accumulation in fish tissues, increased bile-acid concentration, and upregulation of cyp7a1 and abcb11. Hepatic fat content and plasma triglycerides decreased with increasing dietary taurine supplementation. Taurine supplementation mitigated part of the negative effects of plant-based diets, leading to better lipid utilisation.
format Online
Article
Text
id pubmed-10177204
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-101772042023-05-13 Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole Aragão, Cláudia Teodósio, Rita Colen, Rita Richard, Nadège Rønnestad, Ivar Dias, Jorge Conceição, Luís E. C. Ribeiro, Laura Animals (Basel) Article SIMPLE SUMMARY: In contemporary dietary formulations for aquaculture, the amounts of fishmeal are being constantly reduced, and the inclusion of plant-protein sources is now a standard procedure. This approach may result in an unbalanced supply of selected nutrients, from which taurine was identified. Taurine is an amino acid that plays important physiological roles and is included in bile salts, which are essential for the emulsion, digestion, and absorption of dietary lipids and fat-soluble vitamins. In mammals, a hypolipidemic effect of taurine has been described. Senegalese sole (Solea senegalensis) is a marine fish species with increasing importance for aquaculture production in Southern European countries, with a high market value and low tolerance to dietary lipid levels. Thus, this study tested the effects of taurine supplementation to low-fishmeal diets on the physiological responses of Senegalese sole, with an emphasis on lipid metabolism. The results show that dietary inclusion of high levels of plant-protein sources to replace marine ingredients resulted in negative effects on lipid metabolism, due to the resultant low bile-acid concentration and/or the limited availability of taurine for bile-salt emulsification. Taurine supplementation mitigated part of the negative effects of plant-based diets, leading to better lipid utilisation. ABSTRACT: Taurine is a sulphur-containing amino acid with important physiological roles and a key compound for the synthesis of bile salts, which are essential for the emulsion and absorption of dietary lipids. This study aimed to evaluate the effects of taurine supplementation to low-fishmeal diets on the metabolism of taurine, bile acids, and lipids of Senegalese sole. A fishmeal (FM) and a plant-protein-based (PP0) diet were formulated, and the latter was supplemented with taurine at 0.5 and 1.5% (diets PP0.5 and PP1.5). Diets were assigned to triplicate tanks containing 35 fish (initial weight ~14 g) for 6 weeks. Fish from the PP0 treatment presented lower taurine and bile-acid concentrations compared with the FM treatment, and a downregulation of cyp7a1 and abcb11 was observed. Triolein catabolism decreased in PP0-fed fish, resulting in increased hepatic fat content and plasma triglycerides, while no effects on plasma cholesterol were observed. Taurine supplementation to plant-based diets resulted in a higher taurine accumulation in fish tissues, increased bile-acid concentration, and upregulation of cyp7a1 and abcb11. Hepatic fat content and plasma triglycerides decreased with increasing dietary taurine supplementation. Taurine supplementation mitigated part of the negative effects of plant-based diets, leading to better lipid utilisation. MDPI 2023-04-28 /pmc/articles/PMC10177204/ /pubmed/37174538 http://dx.doi.org/10.3390/ani13091501 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Aragão, Cláudia
Teodósio, Rita
Colen, Rita
Richard, Nadège
Rønnestad, Ivar
Dias, Jorge
Conceição, Luís E. C.
Ribeiro, Laura
Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole
title Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole
title_full Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole
title_fullStr Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole
title_full_unstemmed Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole
title_short Taurine Supplementation to Plant-Based Diets Improves Lipid Metabolism in Senegalese Sole
title_sort taurine supplementation to plant-based diets improves lipid metabolism in senegalese sole
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10177204/
https://www.ncbi.nlm.nih.gov/pubmed/37174538
http://dx.doi.org/10.3390/ani13091501
work_keys_str_mv AT aragaoclaudia taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT teodosiorita taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT colenrita taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT richardnadege taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT rønnestadivar taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT diasjorge taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT conceicaoluisec taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole
AT ribeirolaura taurinesupplementationtoplantbaseddietsimproveslipidmetabolisminsenegalesesole