<研究報告>魚類のOxalacetate Carboxy-lyaseおよび2,3の酵素の活性におよぼす絶食の影響

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The effect of starvation on the activities of oxalacetate carboxy-lyase (OAC-lyase) and some enzymes both of hibuna, Carasius auratus (L.), and carp, Cyprinus carpio, was investigated. The results obtained were as follows. Changes of activities of some hepatic enzymes during starvation were affected by the contents of energy sources in the liver. According as the content of glycogen in the liver decreased, the activities of gluconeogenic enzymes (G6Pase and PEP-carboxykinase) increased and those of glycolytic enzymes (pyruvate kinase and phosphofructokinase) decreased, whereas gluconeogenesis was repressed and glycolysis was accelerated when the large quantities of glycogen remained in the liver. When the protein was utilized as energy source during starvation, it seemed that the activities of hepatic and muscular GOT and hepatic GPT increased. Since the formation of OA was catalized by GOT, it seemed that OAC-lyase, OA metabolyzing enzyme, was participated in the energy formation system. The activity of hepatic malate enzyme as well as that of yellow-tail, Seriola quinqueradiata, and red sea bream, Pagrus major increased by starvation.
福岡女子大学の論文
1979-02-28