Salinity effects on activity and expression of glutathione s-transferases in white sturgeon and Chinook salmon
Identifieur interne : 000195 ( PascalFrancis/Checkpoint ); précédent : 000194; suivant : 000196Salinity effects on activity and expression of glutathione s-transferases in white sturgeon and Chinook salmon
Auteurs : Rachel T. Donham [États-Unis] ; Dexter Morin [États-Unis] ; Ronald S. Tjeerdema [États-Unis]Source :
- Ecotoxicology and environmental safety : (Print) [ 0147-6513 ] ; 2006.
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Abstract
This study evaluated the activity and expression of the glutathione S-transferase (GST) detoxification isoenzymes in juvenile white sturgeon (Acipenser transmontanus) and Chinook salmon (Oncorhynchus tshawytscha) during acclimation from freshwater (2%o) to estuarine (15%o) salinity conditions. In white sturgeon, GST activity toward l-chloro-2,4-dinitrobenzene (CDNB) increased significantly (P = 0.005; n = 5) with elevated salinity, but not for the Chinook salmon (P = 0.174; n = 10). GST activity of both sturgeon and salmon toward ethacrynic acid (ETHA) did not significantly change with elevated salinity (P = 0.516 with n = 3, and P = 0.125 with n = 3, respectively). Expression of the GST classes, and hepatic glutathione (GSH) concentration, as determined by HPLC, also did not significantly change with increased salinity. In conclusion, overall GST activity in white sturgeon, but not Chinook salmon, is stimulated by elevated water salinity, thus electrophilic chemicals such as pesticides may be more effectively detoxified by sturgeon as they undergo seaward migration.
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Donham</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Environmental Toxicology, College of Agricultural and Environmental Sciences, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616-8588</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Morin, Dexter" sort="Morin, Dexter" uniqKey="Morin D" first="Dexter" last="Morin">Dexter Morin</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Department of Molecular Biosciences, School of Veterinary Medicine, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Tjeerdema, Ronald S" sort="Tjeerdema, Ronald S" uniqKey="Tjeerdema R" first="Ronald S." last="Tjeerdema">Ronald S. 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Donham</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Environmental Toxicology, College of Agricultural and Environmental Sciences, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616-8588</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Morin, Dexter" sort="Morin, Dexter" uniqKey="Morin D" first="Dexter" last="Morin">Dexter Morin</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Department of Molecular Biosciences, School of Veterinary Medicine, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Tjeerdema, Ronald S" sort="Tjeerdema, Ronald S" uniqKey="Tjeerdema R" first="Ronald S." last="Tjeerdema">Ronald S. Tjeerdema</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Environmental Toxicology, College of Agricultural and Environmental Sciences, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616-8588</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Ecotoxicology and environmental safety : (Print)</title><title level="j" type="abbreviated">Ecotoxicol. environ. saf. : (Print)</title><idno type="ISSN">0147-6513</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Ecotoxicology and environmental safety : (Print)</title><title level="j" type="abbreviated">Ecotoxicol. environ. saf. : (Print)</title><idno type="ISSN">0147-6513</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser transmontanus</term><term>Detoxification</term><term>Ecotoxicology</term><term>Environment</term><term>Glutathione transferase</term><term>Oncorhynchus tshawytscha</term><term>Salinity</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Salinité</term><term>Glutathione transferase</term><term>Ecotoxicologie</term><term>Environnement</term><term>Détoxication</term><term>Acipenser transmontanus</term><term>Oncorhynchus tshawytscha</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study evaluated the activity and expression of the glutathione S-transferase (GST) detoxification isoenzymes in juvenile white sturgeon (Acipenser transmontanus) and Chinook salmon (Oncorhynchus tshawytscha) during acclimation from freshwater (2%o) to estuarine (15%o) salinity conditions. In white sturgeon, GST activity toward l-chloro-2,4-dinitrobenzene (CDNB) increased significantly (P = 0.005; n = 5) with elevated salinity, but not for the Chinook salmon (P = 0.174; n = 10). GST activity of both sturgeon and salmon toward ethacrynic acid (ETHA) did not significantly change with elevated salinity (P = 0.516 with n = 3, and P = 0.125 with n = 3, respectively). Expression of the GST classes, and hepatic glutathione (GSH) concentration, as determined by HPLC, also did not significantly change with increased salinity. In conclusion, overall GST activity in white sturgeon, but not Chinook salmon, is stimulated by elevated water salinity, thus electrophilic chemicals such as pesticides may be more effectively detoxified by sturgeon as they undergo seaward migration.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0147-6513</s0></fA01><fA02 i1="01"><s0>EESADV</s0></fA02><fA03 i2="1"><s0>Ecotoxicol. environ. saf. : (Print)</s0></fA03><fA05><s2>63</s2></fA05><fA06><s2>2</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Salinity effects on activity and expression of glutathione s-transferases in white sturgeon and Chinook salmon</s1></fA08><fA11 i1="01" i2="1"><s1>DONHAM (Rachel T.)</s1></fA11><fA11 i1="02" i2="1"><s1>MORIN (Dexter)</s1></fA11><fA11 i1="03" i2="1"><s1>TJEERDEMA (Ronald S.)</s1></fA11><fA14 i1="01"><s1>Department of Environmental Toxicology, College of Agricultural and Environmental Sciences, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616-8588</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Molecular Biosciences, School of Veterinary Medicine, University of California, 1 Shields Avenue</s1><s2>Davis, CA 95616</s2><s3>USA</s3><sZ>2 aut.</sZ></fA14><fA20><s1>293-298</s1></fA20><fA21><s1>2006</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>17753</s2><s5>354000133146540130</s5></fA43><fA44><s0>0000</s0><s1>© 2006 INIST-CNRS. 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Expression of the GST classes, and hepatic glutathione (GSH) concentration, as determined by HPLC, also did not significantly change with increased salinity. 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Donham</name></region><name sortKey="Morin, Dexter" sort="Morin, Dexter" uniqKey="Morin D" first="Dexter" last="Morin">Dexter Morin</name><name sortKey="Tjeerdema, Ronald S" sort="Tjeerdema, Ronald S" uniqKey="Tjeerdema R" first="Ronald S." last="Tjeerdema">Ronald S. Tjeerdema</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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