Brain oxidative stress in rat with chronic iron or copper overload

Add time:09/05/2019    Source:sciencedirect.com

Male rats of 80–90 g that were fed 42 days with a commercial rodent diet of 2780 kcal/100 g and received chronic overloads of either Fe(II) or Cu(II) in the drinking water. The two metals produced brain oxidative stress and damage with marked increases in the indicators of oxidative processes: in vivo brain surface chemiluminescence (the sensitive organ non-invasive assay for oxidative free radical reactions), and the ex vivo processes of phospholipid peroxidation and protein oxidation. Brain redox imbalance was also indicated by marked decreases in the cellular indicators of oxidative metabolic stress: reduced glutathione (GSH) content and reduced/oxidized glutathione ratio (GSH/GSSG). Brain decreased GSH content has a central role in the biochemical oxidative processes associated with Fe and Cu chronic damage. The understanding of biochemical oxidative imbalances in the rat brain with chronic Fe(II) or Cu(II) overloads may be useful for the establishment of pharmacological therapies for human pathologies associated to Fe and Cu cellular imbalances.

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