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
Citations
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Journal ArticleDOI
Food intake and appetite control in a GH-transgenic zebrafish
TL;DR: GT responds to feeding status without interference of transgenesis, whereas brain responds to GH trans genesis without any effect of treatment, andGene expression results pointed out that gastrointestinal (GT) cholecystokinin has a substantial contribution to the communication between peripheral and central control of food intake.
Journal ArticleDOI
Using cornstarch in microparticulate diets for larvicultured tropical gar (Atractosteus tropicus).
Carlos A. Frías-Quintana,J. Domínguez-Lorenzo,Carlos Alfonso Álvarez-González,Dariel Tovar-Ramírez,Rafael Martínez-García +4 more
TL;DR: It is concluded that the contribution of corn starch (15 %) replacing cellulose in the diet improves growth and survival of this species.
Journal ArticleDOI
Regulation by Dietary Carbohydrates of Intermediary Metabolism in Liver and Muscle of Two Isogenic Lines of Rainbow Trout
Xuerong Song,Xuerong Song,Lucie Marandel,Sandrine Skiba-Cassy,Geneviève Corraze,Mathilde Dupont-Nivet,Edwige Quillet,Inge Geurden,Stéphane Panserat +8 more
TL;DR: It is demonstrated that dietary carbohydrate not only affect glucose metabolism but also strongly impact the lipid and energy metabolism in liver and muscle of trout.
Journal ArticleDOI
Hepatic glucose metabolic responses to digestible dietary carbohydrates in two isogenic lines of rainbow trout.
Xuerong Song,Xuerong Song,Lucie Marandel,Mathilde Dupont-Nivet,Edwige Quillet,Inge Geurden,Stéphane Panserat +6 more
TL;DR: Some new and unexpected molecular regulations of the glucose metabolism in rainbow trout may partly lead to the poor utilization of dietary carbohydrates and it underlines the existence of differences in molecular regulation of glucose metabolism between two isogenic lines which provides arguments for future selection of rainbow trout.
Journal ArticleDOI
Effects of growth hormone, insulin-like growth factor I, triiodothyronine, thyroxine, and cortisol on gene expression of carbohydrate metabolic enzymes in sea bream hepatocytes.
Ling Yan Leung,Norman Y.S. Woo +1 more
TL;DR: Changes in transcript abundance indicate that the potential of glycolysis is stimulated by GH and thyroid hormones, but attenuated by cortisol, gluconeogenic and glycogenic potential are augmented by GH, thyroid hormones and cortisol, and glycogenolytic potential is upregulated by thyroid hormones but not affected by GH or cortisol.
References
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Journal ArticleDOI
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?”