Response of enzyme activities and metabolic intermediate concentrations to epinephrine administration in hepatopancreas and muscle of carp.
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- SUGITA TSUYOSHI
- Faculty of Agriculture, Kochi University
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- SHIMENO SADAO
- Faculty of Agriculture, Kochi University
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- OHKUBO YASUNORI
- Faculty of Agriculture, Kochi University
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- HOSOKAWA HIDETSUYO
- Faculty of Agriculture, Kochi University
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- MASUMOTO TOSHIRO
- Faculty of Agriculture, Kochi University
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Common carp Cyprinus carpio were administered intraperitoneally with 10 μmol epinephrine per 100 g bodyweight, and enzyme activities and metabolic intermediate concentrations were determined in the hepatopancreas and muscle. Glycogen phosphorylase a (GPase a) activity together with cyclic AMP (cAMP) concentration was increased, and glycogen content was decreased in the hepatopancreas and muscle at 2 h after the administration. The epinephrine administration also increased hepatopancreatic glucose-6-phosphatase and fructose-1, 6-biphosphatase activities as well as serum glucose, lactate, and free amino acid concentrations. Furthermore, its administration increased phosphofructokinase activity together with lactate, fructose-6-phosphate, adenosine-5'-monophosphate, and adenosine-5'-diphosphate concentrations and decreased citrate concentration in the muscle. Thereafter, almost all parameter concentrations in the hepatopancreas and muscle recovered to the pre-administered levels during 24 h after the administration. These results suggest that epinephrine administration enhanced glycogenolysis and gluconeogenesis in the hepatopancreas, and released glucose into the bloodstream to supply it to the muscle. The blood glucose together with muscle glycogen seems to be metabolized through enhanced glycolysis in the muscle.
収録刊行物
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- Fisheries science
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Fisheries science 67 (2), 281-286, 2001
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390001204429567232
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- NII論文ID
- 130003742353
- 10008268618
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- NII書誌ID
- AA10993718
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- ISSN
- 14442906
- 09199268
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- NDL書誌ID
- 5750633
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可