Molecular oxidative stress markers in olive ridley turtles (Lepidochelys olivacea) and their relation to metal concentrations in wild populations

Environmental Pollution
Adriana A Cortés-GómezDiego Romero

Abstract

Due to their longevity and extensive migration areas, marine turtles are able to accumulate diverse contaminants over many years and as a consequence they represent an interesting bioindicator species for marine ecosystem pollution. Metals provoke toxicological effects in many aquatic animal species, but marine turtles have been under-investigated in this area. Thus, we have determined the presence of certain inorganic elements (As, Cd, Cu, Ni, Pb, Se and Zn) in olive ridley turtles (Lepidochelys olivacea) and related them to metallothionein (MT), superoxide dismutase (SOD), catalase (CAT) and glutathione reductase (GR) transcription and/or enzymatic activities. Gene expression of sod, cat and gr was found to be higher in blood than liver or kidney but most of the significant relationships were found in liver, not only for gene expression but also for enzyme activities. This must be related to the role the liver has as the first filter organ. Several positive relationships of sod, cat and gr gene expression in the different tissues were found in this population, as well as very high Cd concentrations. This could mean that these turtles are adapting to the metals-production of ROS and damage through a high transcription of these...Continue Reading

Citations

Nov 1, 2018·Environmental Science and Pollution Research International·Adriana A Cortés-GómezDiego Romero
Nov 16, 2019·Environmental Science and Pollution Research International·Pilar MuñozDiego Romero
May 15, 2021·BMC Genomics·Shreya M BanerjeeLisa M Komoroske
Sep 6, 2020·The Science of the Total Environment·Stephanie ChaousisJason P van de Merwe
Jan 28, 2022·The Science of the Total Environment·Camila MiguelMarcelo Renan de Deus Santos

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