Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil

The Glutathione S-Transferase (GST) activity has been proposed as a biomarker of susceptibility to the presence of potentially damaging xenobiotics in aquatic organisms. The aim of this work was to measure GST activity in the liver of Sciades herzbergii (catfish) in order to evaluate the biochemical...

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Autores principales:	Carvalho-Neta,Raimunda N.F, Abreu-Silva,Ana L
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2013
Materias:	biomonitoring gonadosomatic index catfish São Marcos Bay Brazil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000200002
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spelling	oai:scielo:S0718-560X20130002000022013-08-13Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, BrazilCarvalho-Neta,Raimunda N.FAbreu-Silva,Ana L biomonitoring gonadosomatic index catfish São Marcos Bay Brazil The Glutathione S-Transferase (GST) activity has been proposed as a biomarker of susceptibility to the presence of potentially damaging xenobiotics in aquatic organisms. The aim of this work was to measure GST activity in the liver of Sciades herzbergii (catfish) in order to evaluate the biochemical effects of pollutants. The catfish samples were collected along known pollution gradients areas (A1) and from areas regarded as relatively free of anthropogenic input (A2), in São Marcos Bay, São Luis de Maranhão, Brazil. The variables analyzed in fish were: length, weight, gonadal stages, gonadosomatic index and GST activity. The databases from this analysis were compiled, and generalized linear models were used to analyze the dependence of enzyme activity on the areas of sampling and on selected biological parameters of fish. A significant difference was observed in GST activity in the liver of S. herzbergii in the comparison between fish from the contaminated site and those from the reference site (P < 0.05). Morphometric (length and weight) parameters and gonadosomatic index of collected fish were significant in the linear model of GST activity only in the reference site. These results may be due to the activity pattern of the enzyme, which increases with the sexual maturity of the animals in healthy environments. In the contaminated area (A1) these correlations do not exist, probably as a result of the energy used in the biotransformation of the various contaminants.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.41 n.2 20132013-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000200002en10.3856/vol41-issue2-fulltext-2
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biomonitoring gonadosomatic index catfish São Marcos Bay Brazil
spellingShingle	biomonitoring gonadosomatic index catfish São Marcos Bay Brazil Carvalho-Neta,Raimunda N.F Abreu-Silva,Ana L Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil
description	The Glutathione S-Transferase (GST) activity has been proposed as a biomarker of susceptibility to the presence of potentially damaging xenobiotics in aquatic organisms. The aim of this work was to measure GST activity in the liver of Sciades herzbergii (catfish) in order to evaluate the biochemical effects of pollutants. The catfish samples were collected along known pollution gradients areas (A1) and from areas regarded as relatively free of anthropogenic input (A2), in São Marcos Bay, São Luis de Maranhão, Brazil. The variables analyzed in fish were: length, weight, gonadal stages, gonadosomatic index and GST activity. The databases from this analysis were compiled, and generalized linear models were used to analyze the dependence of enzyme activity on the areas of sampling and on selected biological parameters of fish. A significant difference was observed in GST activity in the liver of S. herzbergii in the comparison between fish from the contaminated site and those from the reference site (P < 0.05). Morphometric (length and weight) parameters and gonadosomatic index of collected fish were significant in the linear model of GST activity only in the reference site. These results may be due to the activity pattern of the enzyme, which increases with the sexual maturity of the animals in healthy environments. In the contaminated area (A1) these correlations do not exist, probably as a result of the energy used in the biotransformation of the various contaminants.
author	Carvalho-Neta,Raimunda N.F Abreu-Silva,Ana L
author_facet	Carvalho-Neta,Raimunda N.F Abreu-Silva,Ana L
author_sort	Carvalho-Neta,Raimunda N.F
title	Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil
title_short	Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil
title_full	Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil
title_fullStr	Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil
title_full_unstemmed	Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil
title_sort	glutathione s-transferase as biomarker in sciades herzbergii (siluriformes: ariidae) for environmental monitoring: the case study of são marcos bay, maranhão, brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000200002
work_keys_str_mv	AT carvalhonetaraimundanf glutathionestransferaseasbiomarkerinsciadesherzbergiisiluriformesariidaeforenvironmentalmonitoringthecasestudyofsaomarcosbaymaranhaobrazil AT abreusilvaanal glutathionestransferaseasbiomarkerinsciadesherzbergiisiluriformesariidaeforenvironmentalmonitoringthecasestudyofsaomarcosbaymaranhaobrazil
_version_	1714205106563448832

Glutathione S-Transferase as biomarker in Sciades herzbergii (Siluriformes: Ariidae) for environmental monitoring: the case study of São Marcos Bay, Maranhão, Brazil

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