Journal ArticleDOI
Carbohydrates in fish nutrition: effects on growth, glucose metabolism and hepatic enzymes
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TLDR
The focus then shifts to selected aspects of hormonal regulation of carbohydrate metabolism and dietary carbohydrates and their variable effects on glycogen and glucose turnover, and the correlation of dietary carbohydrates with fish health.Abstract:
The utilisation of dietary carbohydrates and their effects on fish metabolism are reviewed. Details on how dietary carbohydrates affect growth, feed utilisation and deposition of nutrients are discussed. Variations in plasma glucose concentrations emphasizing results from glucose tolerance tests, and the impact of adaptation diets are interpreted in the context of secondary carbohydrate metabolism. Our focus then shifts to selected aspects of hormonal regulation of carbohydrate metabolism and dietary carbohydrates and their variable effects on glycogen and glucose turnover. We analyse the interaction of carbohydrates with other nutrients, especially protein and protein sparing, and de novo synthesis of lipids, and finish by discussing the correlation of dietary carbohydrates with fish health.read more
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Dietary lipid levels in meagre (Argyrosomus regius): Effects on biochemical and molecular indicators of liver
Efthimia Antonopoulou,Evgenia Kousidou,Evangelia Tserga,Konstantinos Feidantsis,Stavros Chatzifotis +4 more
TL;DR: Cellular and metabolic responses were characterized and the antioxidant defence in the liver of meagre (Argyrosomus regius) in relation to dietary lipid consumed and the results showed that the 17% and 21%-lipid diets induced Hsp70 and activated the phosphorylation of p38-MAPK, while an induction of Hsp90 was found only in fish fed the 17%- Lipid diet.
Journal ArticleDOI
Stress response of Salmo salar (Linnaeus 1758) when heavily infested by Caligus rogercresseyi (Boxshall & Bravo 2000) copepodids
TL;DR: The results suggest that heavy infestations of C. rogercresseyi lead to an acute stress response, metabolic reorganization, and increased mucus production in S. salar under heavy infestation conditions.
Journal ArticleDOI
Liver Transcriptome Profiling Reveals That Dietary DHA and EPA Levels Influence Suites of Genes Involved in Metabolism, Redox Homeostasis, and Immune Function in Atlantic Salmon (Salmo salar).
Xi Xue,Jennifer R. Hall,Albert Caballero-Solares,Khalil Eslamloo,Richard G. Taylor,Christopher C. Parrish,Matthew L. Rise +6 more
TL;DR: This research has provided new insights into dietary requirement of DHA and EPA and their impact on physiologically important pathways in addition to lipid metabolism in Atlantic salmon.
Journal ArticleDOI
Skin swabbing is a refined technique to collect DNA from model fish species.
Ceinwen A. Tilley,Héctor Carreño Gutiérrez,Marion Sebire,Oluwapelumi Obasaju,Florian Reichmann,Florian Reichmann,Ioanna Katsiadaki,Iain Barber,William H. J. Norton,William H. J. Norton +9 more
TL;DR: In this paper, the authors combine behavioural and physiological analyses to investigate changes in gene expression, behaviour and welfare after fin clipping and swabbing, and they found that swabbed led to a smaller change in cortisol release and behaviour on the first day of analysis compared to fin clipping.
Journal ArticleDOI
Moderate levels of dietary arachidonic acid reduced lipid accumulation and tended to inhibit cell cycle progression in the liver of Japanese seabass Lateolabrax japonicus.
TL;DR: Moderate levels of dietary ARA reduced lipid accumulation and tended to inhibit cell cycle progression in the liver of Japanese seabass, confirming the transcription and protein concentration results related to lipid metabolism.
References
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Cortisol in teleosts: dynamics, mechanisms of action, and metabolic regulation
TL;DR: This review attempts to delineate common themes on the physiological and metabolic roles of cortisol in teleost fishes and to suggest new approaches that might overcome some of the inconsistencies on the role of this multifaceted hormone.
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Stress responses and disease resistance in salmonid fish: Effects of chronic elevation of plasma cortisol
TL;DR: It is shown, by means of intraperitoneal implantation of cortisol, that chronic elevation of plasma cortisol levels in the brown trout results in a dose-dependent increase in mortality due to common bacterial and fungal diseases.
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What if Minkowski had been ageusic? An alternative angle on diabetes.
TL;DR: It is suggested that the phenomena of insulin resistance and hyperglycemia might be more readily understood if viewed in the context of underlying abnormalities of lipid metabolism.
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Pancreatic beta-cells are rendered glucose-competent by the insulinotropic hormone glucagon-like peptide-1(7-37)
TL;DR: It is reported here that GLP-1 confers glucose sensitivity to glucose-resistant p-cells, a phenomenon the authors term glucose competence, which is similar to membrane depolarization, the generation of action potentials, and Ca2+ influx, events that are known to trigger insulin secretion.
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Glucose-6-phosphate dehydrogenase: a "housekeeping" enzyme subject to tissue-specific regulation by hormones, nutrients, and oxidant stress.
TL;DR: The central question of this review is “How can the G6PDH gene be constitutively expressed in some tissues while displaying adaptive regulation in others when there exists a single transcription unit for the gene?”