Linked Life Data

17289437

Source:http://linkedlifedata.com/resource/pubmed/id/17289437

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-3-9
pubmed:abstractText
Freshwater fish Oreochromis niloticus were exposed to 5, 10 and 20 microM concentrations of Cd, Cu, Zn and Pb for 14 days and responses of several enzymes were determined subsequently. Liver catalase (CAT) activity was influenced by Cd and Pb exposures, while it was inhibited by Zn exposure. Copper, on the other hand, did not cause significant changes in CAT activity. Liver alkaline phosphatase (AP) activity was first stimulated at lowest (5 microM) exposure concentration, while there were significant inhibitions at higher (10 microM) exposure concentration. At the highest (20 microM) exposure concentration, AP activity was compensated coming to the control level, except Pb exposure. Intestine and serum AP activities were stimulated by all Zn exposures and 10 microM Cu exposure, while other exposures did not cause significant changes on AP activity. Na,K-ATPase activity in the gill and intestine was inhibited by all the metal exposures, except 20 microM Pb exposure that resulted in an increase in the activity in the gill. Similarly, muscle Ca-ATPase activity was inhibited by all the metal exposures, except Cu exposures. This study indicated that enzymatic systems may be used as a sensitive bioindicator of metal contamination in aquatic systems. Nevertheless, the results also stress the importance of addressing the sensitivity of these enzymes when they are used as a bioindicator for metal contamination, because the responses of the enzymes varied considerably according to metal types and concentrations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1532-0456
pubmed:author
pubmed:issnType
Print
pubmed:volume
145
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
282-7
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Enzymatic responses to metal exposures in a freshwater fish Oreochromis niloticus.
pubmed:affiliation
Department of Biology, Faculty of Sciences and Letters, University of Cukurova, 01330 Adana, Turkey. gatli@cu.edu.tr
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't