title: Effect of guar gum on glucose and lipid metabolism in white sea bream Diplodus sargus.
abstract: The aim of this study was to assess the role of soluble non-starch polysaccharide (guar gum) on white sea bream Diplodus sargus, glucose and lipid metabolism. A control diet was formulated to contain 40 % crude protein, 14 % crude lipids and 35 % pregelatinized maize starch, and three other diets were formulated similar to the control diet except for guar gum, which was included at 4 % (diet GG4), 8 % (diet GG8) or 12 % (diet GG12). Diets were fed to the fish for 9 weeks on a pair-feeding scheme. Guar gum had no effect on growth performance, feed efficiency, glycaemia, cholesterolaemia and plasma triacylglyceride levels. Hepatic glucokinase and pyruvate kinase activities, liver glycogen content and liver insulin-like growth factor-I gene expression were not affected by dietary guar gum, while fructose-1,6-bisphosphatase activity was lower in fish fed guar gum-supplemented diets. Hepatic glucose-6-phosphate dehydrogenase activity was higher in fish fed diets GG4 and GG8 than in the control group. Overall, data suggest that in contrast to mammals guar gum had no effect on white sea bream glucose utilization and in lowering plasma cholesterol and triacylglyceride levels. However, it seems to contribute to lower endogenous glucose production.
authors: CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal. enes@portugalmail.com
authors: P
authors: P
authors: Enes
authors: P
authors: P
authors: Pousão-Ferreira
authors: C
authors: C
authors: Salmerón
authors: E
authors: E
authors: Capilla
authors: I
authors: I
authors: Navarro
authors: J
authors: J
authors: Gutiérrez
authors: A
authors: A
authors: Oliva-Teles
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002151:Calorimetry / Q000662:veterinary; D017931:DNA Primers / Q000235:genetics; D005526:Food, Formulated; D006597:Fructose-Bisphosphatase / Q000378:metabolism; D005685:Galactans / Q000494:pharmacology*; D005941:Glucokinase / Q000378:metabolism; D005947:Glucose / Q000378:metabolism*; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism; D050356:Lipid Metabolism / Q000187:drug effects*; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D008351:Mannans / Q000494:pharmacology*; D010473:Perciformes / Q000378:metabolism*; D053149:Plant Gums / Q000494:pharmacology*; D011770:Pyruvate Kinase / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction / Q000662:veterinary
chemical_list: D017931:DNA Primers; D005685:Galactans; D008351:Mannans; D053149:Plant Gums; C007894:guar gum; D005954:Glucosephosphate Dehydrogenase; D005941:Glucokinase; D011770:Pyruvate Kinase; D006597:Fructose-Bisphosphatase; D005947:Glucose