RESUMEN
The effect of food additive including antioxidant dihydroquercetin and polysaccharide arabinogalactan on the activity of metabolic enzymes in muscles and liver of artificially grown rainbow trout Oncorhynchus mykiss affected by bacterial infection was investigated. The results of the study indicated an increase in the resistance of trout to the action of bacterial infection with the enrichment of the diet with the studied bioactive components, apparently mediated, among other factors, by the activation of metabolic pathways of synthesis of energy and reducing equivalents.
Asunto(s)
Bacteriemia/metabolismo , Enfermedades de los Peces/metabolismo , Hígado/enzimología , Trucha/metabolismo , Animales , Bacteriemia/microbiología , Complejo IV de Transporte de Electrones/metabolismo , Metabolismo Energético , Enfermedades de los Peces/microbiología , Fructosa-Bifosfato Aldolasa/metabolismo , Glucosafosfato Deshidrogenasa/metabolismo , L-Lactato Deshidrogenasa/metabolismo , Trucha/microbiologíaRESUMEN
The effect of a rapid temperature change on the biochemical status of blue mussels Mytilus edulis L. from the White Sea was studied under conditions of aquarium experiment. It is shown that modifications of the composition of reserve and structural lipids and their fatty acids, of the activity of lysosomal enzymes (ß-glucosidases, cathepsins B and D), of calcium-dependent proteases of cytocol (calpains) and of the enzyme of the second phase of biotransformation of xenobiotics - glutathione-S-transferase, reflect an unspecific compensatory reaction of bivalves to stress action of environmental factors and indicate reconstruction of blue mussel metabolism as early as within first hours of temperature change. The initial high level of glutathione-S-transferase activity in control blue mussels as well as an increase of glutathione concentration in the course of experiment may facilitate successful exit of mussels from the state of reduced metabolism.