Abstract：
:Abnormally high levels of iron are observed in the brain of patients suffering from neurodegenerative disorders. The mechanisms involved in iron accumulation in neurodegenerative disorders remain poorly understood. In the present study we investigated the effects of aging and neonatal iron overload on the mRNA expression of proteins critically involved in controlling iron homeostasis. Wistar rat pups received a single daily dose of vehicle or iron (10 mg/kg of b.w. of Fe(2+)), at postnatal days 12-14. The expression of Transferrin Receptor (TfR), H-Ferritin, and IRP2 were analyzed by a semi-quantitative reverse transcriptase polymerase chain reaction assay in cortex, hippocampus and striatum of rats sacrificed at three different ages (15-day-old; 90-day-old and 2-year old rats). Results indicate that TfR, H-ferritin, and IRP2 mRNA expression was differentially affected by aging and by neonatal iron treatment in all three brain regions. These findings might have implications for the understanding of iron homeostasis misregulation associated with neurodegenerative disorders.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Dornelles AS,Garcia VA,de Lima MN,Vedana G,Alcalde LA,Bogo MR,Schröder Ndoi
10.1007/s11064-009-0100-zsubject
Has Abstractpub_date
2010-04-01 00:00:00pages
564-71issue
4eissn
0364-3190issn
1573-6903journal_volume
35pub_type
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