The point about oxidative stress in molluscs

The point about oxidative stress in molluscs

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In the normal metabolism of the aerobic cell, oxygen is used for various biochemical reactions.Because of its two read more lone electrons of parallel spins, the molecular oxygen is stable.However, oxygengenerates Reactive Oxygenated Species or ROS by successive transfer of electrons.The ROS have astrong reactivity and can potentially interact with all other cellular components (lipids, proteins, DNA).They are at the origin of oxidations in chain by creating radicals.

The cell has antioxidant systemswhich limit the effects of the ROS.These systems are composed of enzymes such as glutathionereductase, glutathione peroxidase, etc., and molecules of nonenzymatic nature like the reducedglutathione or chorulon hcg vitamins.The production and the destruction of the radicals of oxygen coexist in a weakbalance.If this balance is broken in favour of the ROS, an oxidative stress is generated.

Xenobioticscould influence this balance by catalysing production of ROS.