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Article: Metabolic adjustments in the common carp during prolonged hypoxia

TitleMetabolic adjustments in the common carp during prolonged hypoxia
Authors
KeywordsCyprinus carpio
Enzyme activities
Hypoxia
Metabolic depression
PFK-1 kinetics
Respiration
Issue Date2000
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/JFB
Citation
Journal Of Fish Biology, 2000, v. 57 n. 5, p. 1160-1171 How to Cite?
AbstractBiochemical and respiratory changes in the common carp Cyprinus carpio were studied 6, 24, 96 and 168 h upon exposure to hypoxia (0-5 mgO2 1-1). Modification of kinetic properties of phosphofructokinase (PFK-1), coupled with a decreased in PFK-1 activities, were evident in muscle. No changes in kinetics and activities could be observed in muscle pyruvate kinase (PK) and lactate dehydrogenase (LDH). A decrease in muscle citrate synthase (CS) and an increase in muscle cytochrome c oxidase (CCO) were found. The common carp was able to maintain a constant level of muscle glycogen, muscle ATP, and liver CS throughout the 168-h experimental period. Changes in activities of liver LDH and muscle CCO were observed only at 168 h, which indicates that common carp may switch to alternative metabolic pathway to deal with prolonged hypoxia. A severe decrease in liver glycogen was accompanied by increases in lactate levels in both the muscle and liver. Oxygen consumption rate was reduced under hypoxia, but resumed to normoxic levels within 2 h upon return to normoxic condition. Overall, these results indicate that carp adopt different strategies in an attempt to deal with short term and long term hypoxia in the natural environment. (C) 2000 The Fisheries Society of the British Isles.
Persistent Identifierhttp://hdl.handle.net/10722/92715
ISSN
2015 Impact Factor: 1.246
2015 SCImago Journal Rankings: 0.952
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, BSen_HK
dc.contributor.authorWu, RSSen_HK
dc.contributor.authorRandall, DJen_HK
dc.contributor.authorLam, PKSen_HK
dc.contributor.authorIp, YKen_HK
dc.contributor.authorChew, SFen_HK
dc.date.accessioned2010-09-17T10:55:02Z-
dc.date.available2010-09-17T10:55:02Z-
dc.date.issued2000en_HK
dc.identifier.citationJournal Of Fish Biology, 2000, v. 57 n. 5, p. 1160-1171en_HK
dc.identifier.issn0022-1112en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92715-
dc.description.abstractBiochemical and respiratory changes in the common carp Cyprinus carpio were studied 6, 24, 96 and 168 h upon exposure to hypoxia (0-5 mgO2 1-1). Modification of kinetic properties of phosphofructokinase (PFK-1), coupled with a decreased in PFK-1 activities, were evident in muscle. No changes in kinetics and activities could be observed in muscle pyruvate kinase (PK) and lactate dehydrogenase (LDH). A decrease in muscle citrate synthase (CS) and an increase in muscle cytochrome c oxidase (CCO) were found. The common carp was able to maintain a constant level of muscle glycogen, muscle ATP, and liver CS throughout the 168-h experimental period. Changes in activities of liver LDH and muscle CCO were observed only at 168 h, which indicates that common carp may switch to alternative metabolic pathway to deal with prolonged hypoxia. A severe decrease in liver glycogen was accompanied by increases in lactate levels in both the muscle and liver. Oxygen consumption rate was reduced under hypoxia, but resumed to normoxic levels within 2 h upon return to normoxic condition. Overall, these results indicate that carp adopt different strategies in an attempt to deal with short term and long term hypoxia in the natural environment. (C) 2000 The Fisheries Society of the British Isles.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/JFBen_HK
dc.relation.ispartofJournal of Fish Biologyen_HK
dc.subjectCyprinus carpioen_HK
dc.subjectEnzyme activitiesen_HK
dc.subjectHypoxiaen_HK
dc.subjectMetabolic depressionen_HK
dc.subjectPFK-1 kineticsen_HK
dc.subjectRespirationen_HK
dc.titleMetabolic adjustments in the common carp during prolonged hypoxiaen_HK
dc.typeArticleen_HK
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_HK
dc.identifier.authorityWu, RSS=rp01398en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1006/jfbi.2000.1382en_HK
dc.identifier.scopuseid_2-s2.0-0033673626en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033673626&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue5en_HK
dc.identifier.spage1160en_HK
dc.identifier.epage1171en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridZhou, BS=7401906781en_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK
dc.identifier.scopusauthoridRandall, DJ=7202208365en_HK
dc.identifier.scopusauthoridLam, PKS=7202365776en_HK
dc.identifier.scopusauthoridIp, YK=7006740134en_HK
dc.identifier.scopusauthoridChew, SF=7202524632en_HK

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