Formation of Reactive Species and Induction of Antioxidant Defence Systems in Polar and Temperate Marine Invertebrates and Fish

Overview

Journal Comp Biochem Physiol A Mol Integr Physiol

Specialties Molecular Biology
Physiology

Date 2004 Sep 17

PMID 15369829

Citations 92

Authors

Doris Abele

Susana Puntarulo

Affiliations

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Abstract

High oxygen solubility at cold-water temperature is frequently considered to be responsible for an apparently elevated level of antioxidant protection in marine ectotherms from polar environments. However, tissue oxidative stress is in most cases a function of elevated or variable pO2, rather than of an elevated tissue oxygen concentration. This review summarizes current knowledge on pro- and antioxidant processes in marine invertebrates and fish, and relates reactive oxygen species (ROS) formation in polar ectotherms to homeoviscous adaptations of membrane and storage lipids, as well as to tissue hypoxia and re-oxygenation during physiological stress.

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