Molecular and biochemical biomarkers responses in the mussel Mytilus edulis collected from Southern Brazil coast.
Marine ecosystems are typically subjected to a variety of stressors containing complex xenobiotics mixtures. This study aims to evaluate the responses of molecular and biochemical biomarkers in the mussel Mytilus edulis providing data for environmental monitoring programs development in Southern Brazil. Mussels were collected at a polluted site, near Patos Lagoon outfall, and at a control site. Gills, muscle and mantle samples were used for biomarker determinations. Mussels collected at the polluted site significantly increased superoxide dismutase (SOD) and glutathione S-transferase (GST) activities and decreased catalase (CAT) activity. Moreover, an increase in sod1, gstπ and hsp70 mRNA expression was observed. Overall, biochemical and molecular biomarkers responses were observed, but these responses varied depending on the analyzed tissue. These results indicate possible contaminants effects on organisms and the need for effective environmental monitoring programs in this ecosystem.
Programa de Pós-Graduação em Ciências Fisiológicas - Fisiologia Animal Comparada, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Av. Itália Km 8, Campus Carreiros, CEP 96201-900, Rio Grande, RS, Brazil.
Regina Coimbra
RC
Rola
Maurício da Costa
Mda C
Monteiro
Sérgio Renan da Silva
SR
Reis
Juliana Zomer
JZ
Sandrini
D000818:Animals; D015415:Biomarkers / Q000378:metabolism*; D001938:Brazil; D004784:Environmental Monitoring / Q000379:methods*; D004798:Enzymes / Q000378:metabolism; D005786:Gene Expression Regulation / Q000187:drug effects; D049880:Mytilus edulis / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000494:pharmacology
D015415:Biomarkers; D004798:Enzymes; D014874:Water Pollutants, Chemical