Pro‐oxidant and antioxidant processes in aquatic invertebrates

Most aquatic organisms behave as conformers with respect to environmental variables, including changes in O 2 availability. Aquatic species that show tolerance to hypoxia/anoxia or hyperoxia can be excellent models for investigating physiological and biochemical adaptations that deal with changing O...

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Bibliographic Details
Published in:Annals of the New York Academy of Sciences
Main Author: Canesi, Laura
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2014
Subjects:
Online Access:http://dx.doi.org/10.1111/nyas.12560
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fnyas.12560
https://nyaspubs.onlinelibrary.wiley.com/doi/pdf/10.1111/nyas.12560
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Summary:Most aquatic organisms behave as conformers with respect to environmental variables, including changes in O 2 availability. Aquatic species that show tolerance to hypoxia/anoxia or hyperoxia can be excellent models for investigating physiological and biochemical adaptations that deal with changing O 2 and consequent changes in metabolic rate and production of reactive oxygen species (ROS). Here, I summarize selected data on ROS production and antioxidant defenses in a model marine invertebrate, the bivalve Mytilus , under different environmental and physiological conditions. An example of other bivalves adapted to particular environments (the Antarctic Sea) is also reported. These studies contributed to the knowledge on pro‐oxidant and antioxidant processes in aquatic invertebrates from comparative and environmental perspectives. A common role for metallothioneins in antioxidant protection in mammals and aquatic invertebrates is underlined in different conditions, from human disease to responses to environmental exposure to heavy metals.