III. International Congress of the Molecular Biology Association, İzmir, Türkiye, 10 - 12 Ekim 2014, ss.1
Iron is an indispensible element for brain development, oxygen transport, neurotransmitter
synhtesis as well as normal brain functions [1]. However, excess iron intake increases free
radical formation. These reactive oxygen metabolites may be deleterious for nervous system,
and it induces neurotoxicity. Biological systems have an endogenous defense mechanism to
protect cells against oxidative damage via the antioxidant defense system [2]. The main
purpose of this study was to examine the toxic effects of iron on the brain antioxidant system
at the enzymatic and molecular level. Our results showed that brain antioxidant systems was
affected by iron overload at the enzymatic and molecular level, but the actual effect of iron
was observed at protein level. Reduced glutathione (GSH) level, either increased or decreased
GSH level is an indicator of oxidative stress [3], was markedly reduced in the present of iron.
Keywords: Iron, Rat, Cortex, Neurotoxicity, Glutathione System!