Effects of Quantity and Quality of Dietary Protein on Certain Enzyme Activities in Rainbow Trout
The effects of variation in quality and quantity of dietary protein on certain tissue enzymes in rainbow trout (Salmo gairdneri) were examined. Trout were given for 9 weeks diets containing proteins of different quality (fishmeal, casein and corn gluten) and with protein energy levels ranging from 2...
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| Veröffentlicht in: | The Journal of nutrition 1981-02, Vol.111 (2), p.336-345 |
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| creator | Cowey, Colin B. Cooke, David J. Matty, Alan J. Adron, John W. |
| description | The effects of variation in quality and quantity of dietary protein on certain tissue enzymes in rainbow trout (Salmo gairdneri) were examined. Trout were given for 9 weeks diets containing proteins of different quality (fishmeal, casein and corn gluten) and with protein energy levels ranging from 26 to 74% of total metabolizable energy. In the first experiment, activities of a number of enzymes were monitored but only hepatic serine pyruvate transaminase (SPT) activity changed in response to the dietary treatments—increasing as protein energy level was raised. In the second experiment, opposing glycolytic and gluconeogenic enzyme activities [pyruvate kinase (PK) and phosphoenolpyruvate carboxykinase (PEPCK); phosphofructokinase (PFK) and fructose diphosphatase (FDP)] were measured. Gluconeogenic enzyme activities correlated positively and significantly with dietary protein energy level; glycolytic enzymes correlated negatively and significantly with this parameter for all three proteins. There was no consistent relationship between presumed equilibrium point of opposing enzyme activities and maximum weight gain for the three proteins. It is suggested that hepatic activities of SPT, PFK, PK, FDP and PEPCK will provide useful indices of protein status in trout.
liver enzymes dietary protein gluconeogenesis glycolysis trout |
| doi_str_mv | 10.1093/jn/111.2.336 |
| format | Article |
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liver enzymes dietary protein gluconeogenesis glycolysis trout</description><subject>Animals</subject><subject>Carbohydrate Metabolism</subject><subject>Dietary Proteins - pharmacology</subject><subject>Dietary Proteins - standards</subject><subject>Dose-Response Relationship, Drug</subject><subject>Fructose-Bisphosphatase - metabolism</subject><subject>Gluconeogenesis - drug effects</subject><subject>Glycolysis - drug effects</subject><subject>Liver - enzymology</subject><subject>Phosphoenolpyruvate Carboxykinase (GTP) - metabolism</subject><subject>Phosphofructokinase-1 - metabolism</subject><subject>Pyruvate Kinase - metabolism</subject><subject>Salmonidae - metabolism</subject><subject>Serine - metabolism</subject><subject>Transaminases - metabolism</subject><subject>Trout - metabolism</subject><issn>0022-3166</issn><issn>1541-6100</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1981</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNptkMuPUyEUxonRjHV051bDypW3c4BeuCwntT6SSXzNrJHLPRiaFkbgjql_vTRtXLk6j--XA99HyEsGSwZaXG3jFWNsyZdCyEdkwfoV6yQDeEwWAJx3gkn5lDwrZQsAbKWHC3Ihea8GqRfkx8Z7dLXQ5OnX2cYa6oHaOB2H3bFv-3cBq80H-iWniiHSFOkac7Wt3cQ_hz3Sa1fDQ6gBC23Lb00Z0296m9Ncn5Mn3u4KvjjXS3L3fnO7_tjdfP7waX190zmhV7VTiltQjvWgR4tDr7wDK1AqbScp1AijaB8F8KMftBonkExZDl55rwRXWlySN6e79zn9mrFUsw_F4W5nI6a5GNX3zXsPDXx7Al1OpWT05j6HffNnGJhjoGYbTQvUcNMCbfir89153OP0Dz4n2PTXJ93bZOzPHIq5-870wEFJkP2qAfIEYHP_EDCb4gJGh1PILXkzpfD_l_8CgZWMnA</recordid><startdate>198102</startdate><enddate>198102</enddate><creator>Cowey, Colin B.</creator><creator>Cooke, David J.</creator><creator>Matty, Alan J.</creator><creator>Adron, John W.</creator><general>Elsevier Inc</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>198102</creationdate><title>Effects of Quantity and Quality of Dietary Protein on Certain Enzyme Activities in Rainbow Trout</title><author>Cowey, Colin B. ; Cooke, David J. ; Matty, Alan J. ; Adron, John W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-772a07c1509bae857fc0a3e679ad637b0b3ffe00fbf897bd0617a20f7ff732793</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1981</creationdate><topic>Animals</topic><topic>Carbohydrate Metabolism</topic><topic>Dietary Proteins - pharmacology</topic><topic>Dietary Proteins - standards</topic><topic>Dose-Response Relationship, Drug</topic><topic>Fructose-Bisphosphatase - metabolism</topic><topic>Gluconeogenesis - drug effects</topic><topic>Glycolysis - drug effects</topic><topic>Liver - enzymology</topic><topic>Phosphoenolpyruvate Carboxykinase (GTP) - metabolism</topic><topic>Phosphofructokinase-1 - metabolism</topic><topic>Pyruvate Kinase - metabolism</topic><topic>Salmonidae - metabolism</topic><topic>Serine - metabolism</topic><topic>Transaminases - metabolism</topic><topic>Trout - metabolism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cowey, Colin B.</creatorcontrib><creatorcontrib>Cooke, David J.</creatorcontrib><creatorcontrib>Matty, Alan J.</creatorcontrib><creatorcontrib>Adron, John W.</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of nutrition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cowey, Colin B.</au><au>Cooke, David J.</au><au>Matty, Alan J.</au><au>Adron, John W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of Quantity and Quality of Dietary Protein on Certain Enzyme Activities in Rainbow Trout</atitle><jtitle>The Journal of nutrition</jtitle><addtitle>J Nutr</addtitle><date>1981-02</date><risdate>1981</risdate><volume>111</volume><issue>2</issue><spage>336</spage><epage>345</epage><pages>336-345</pages><issn>0022-3166</issn><eissn>1541-6100</eissn><abstract>The effects of variation in quality and quantity of dietary protein on certain tissue enzymes in rainbow trout (Salmo gairdneri) were examined. Trout were given for 9 weeks diets containing proteins of different quality (fishmeal, casein and corn gluten) and with protein energy levels ranging from 26 to 74% of total metabolizable energy. In the first experiment, activities of a number of enzymes were monitored but only hepatic serine pyruvate transaminase (SPT) activity changed in response to the dietary treatments—increasing as protein energy level was raised. In the second experiment, opposing glycolytic and gluconeogenic enzyme activities [pyruvate kinase (PK) and phosphoenolpyruvate carboxykinase (PEPCK); phosphofructokinase (PFK) and fructose diphosphatase (FDP)] were measured. Gluconeogenic enzyme activities correlated positively and significantly with dietary protein energy level; glycolytic enzymes correlated negatively and significantly with this parameter for all three proteins. There was no consistent relationship between presumed equilibrium point of opposing enzyme activities and maximum weight gain for the three proteins. It is suggested that hepatic activities of SPT, PFK, PK, FDP and PEPCK will provide useful indices of protein status in trout.
liver enzymes dietary protein gluconeogenesis glycolysis trout</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>6257869</pmid><doi>10.1093/jn/111.2.336</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The Journal of nutrition, 1981-02, Vol.111 (2), p.336-345 |
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| language | eng |
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| subjects | Animals Carbohydrate Metabolism Dietary Proteins - pharmacology Dietary Proteins - standards Dose-Response Relationship, Drug Fructose-Bisphosphatase - metabolism Gluconeogenesis - drug effects Glycolysis - drug effects Liver - enzymology Phosphoenolpyruvate Carboxykinase (GTP) - metabolism Phosphofructokinase-1 - metabolism Pyruvate Kinase - metabolism Salmonidae - metabolism Serine - metabolism Transaminases - metabolism Trout - metabolism |
| title | Effects of Quantity and Quality of Dietary Protein on Certain Enzyme Activities in Rainbow Trout |
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