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Acute Stress and an Electrolyte-Imbalanced Diet, but Not Chronic Hypoxia, Incre...
Magnoni, Leonardo J.; Novais, Sara C.; Eding, Ep; Leguen, Isabelle; Lemos, Marco F. L.; Ozório, Rodrigo O. A.; Geurden, Inge; Prunet, PatrickIn aquaculture, fish may be exposed to sub-optimal rearing conditions, which generate a stress response if full adaptation is not displayed. However, our current knowledge of several coexisting factors that may give rise to a stress response is limited, in particular when both chronic and acute stressors are involved. This study investigated changes in metabolic parameters, oxidative stress and innate immune ma...
Parental and early-feeding effects of dietary methionine in rainbow trout (Onco...
Fontagne-Dicharry, Stephanie; Alami-Durante, Helene; Aragão, Cláudia; Kaushik, Sadasivam J.; Geurden, IngeWe studied the effect of changes in dietary methionine (Met) supply in broodstock and first-feeding rainbow trout fry (offspring). Three plant-based diets differing in Met level (deficient, adequate or in excess of the established requirement) were fed to the broodstock (male and female) for 6 months prior to spawning (diets BD, BA and BE, respectively). The offspring from the parental Met-groups was then chall...
Dietary glucose stimulus at larval stage modifies the carbohydrate metabolic pa...
Rocha, Filipa; Dias, Jorge; Geurden, Inge; Dinis, Maria Teresa; Panserat, Stephane; Engrola, S.The concept of nutritional programming was investigated in order to enhance the use of dietary carbohydrates in gilthead seabream juveniles. We assessed the long-term effects of high-glucose stimuli, exerted at the larval stage, on the growth performance, nutrient digestibility and metabolic utilization and gene expression of seabream juveniles, challenged with a high-carbohydrate intake. During early developme...
High-glucose feeding of gilthead seabream (Sparus aurata) larvae: effects on mo...
Rocha, Filipa; Dias, Jorge; Geurden, Inge; Dinis, Maria Teresa; Panserat, Stephane; Engrola, S.Nutritional programming has begun to arouse interest as a novel tool to alter specific metabolic pathways or functions in farmed animals. The aim of the present study was to explore the potential of early glucose stimuli to induce changes in nutrient metabolism of gilthead seabream. Nutritional conditioning was performed by delivering glucose-rich feed at three distinct recurrent periods of larval feeding regim...
Glucose metabolism and gene expression in juvenile zebrafish (Danio rerio) chal...
Rocha, Filipa; Dias, Jorge; Engrola, S.; Gavaia, Paulo; Geurden, Inge; Dinis, Maria Teresa; Panserat, StephaneKnowledge on the role of early nutritional stimuli as triggers of metabolic pathways in fish is extremely scarce. The objective of the present study was to assess the long-term effects of glucose injection in the yolk (early stimulus) on carbohydrate metabolism and gene regulation in zebrafish juveniles challenged with a high-carbohydrate low-protein (HC) diet. Eggs were microinjected at 1 d post-fertilisation ...
Glucose overload in yolk has little effect on the long-term modulation of carbo...
Rocha, Filipa; Dias, J.; Engrola, S.; Gavaia, Paulo J.; Geurden, Inge; Dinis, Maria Teresa; Panserat, S.The use of early nutritional stimuli to program metabolic pathways in fish is ill defined. Therefore, studies were undertaken with zebrafish to assess the effect of high glucose levels during the embryonic stage as a lifelong modulator of genes involved in carbohydrate metabolism. Genes related to carbohydrate metabolism were expressed at low levels at 0.2 and 1 day post-fertilization (dpf). However, from 4 dpf...
Programming the metabolic gene expression in zebrafish juveniles (Danio rerio) ...
Rocha, F.; Dias, J.; Engrola, S.; Gavaia, Paulo J.; Geurden, Inge; Dinis, Maria Teresa; Panserat, S.Using zebrafish as a model organism, assess the effect of high glucose levels during early embryonic stages as a lifelong moderator of metabolic pathways.