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RESEARCH PRODUCT
Age-related changes in the regulation of transcription factor NF-kappa B in rat brain.
Pauliina KorhonenAntero SalminenMerja Heleniussubject
SenescenceMalemedicine.medical_specialtyAgingP50HippocampusNerve Tissue ProteinsBiologyHippocampuschemistry.chemical_compoundWestern blotInternal medicineCerebellummedicineAnimalsRats WistarTranscription factorRegulation of gene expressionCell Nucleusmedicine.diagnostic_testGeneral NeuroscienceNF-kappa BBrainNF-κBTemporal LobeCell biologyFrontal LobeRatsUp-RegulationB vitaminsEndocrinologychemistryGene Expression RegulationFemaleProtein Bindingdescription
Aging process involves an increase in stress at cellular level. We studied whether aging affects the regulation of stress responsive transcription factor NF-kappa B in brain samples of Wistar rats. Hippocampus, cerebellum, and temporal and frontal lobes of cortex were studied. We observed a significant up-regulation in the constitutive, nucleus-located NF-kappa B binding activity in 30-month-old Wistar rats compared to young and 18-month-old rats. The increase was most prominent in cerebellum and in frontal cortex, but age-related changes did not occur in hippocampus. Inducible, cytoplasmic NF-kappa B binding activity was not affected by aging in any of the samples studied. Western blot assays did not show any age-related changes in the nuclear level of p50, p52, and p65 protein components of NF-kappa B complex. Cytoplasmic level of inhibitory I kappa B-alpha was also unaffected. The increase in nuclear constitutive NF-kappa B binding activity during aging may be related to the NF-kappa B driven cellular response to adapt neurons against apoptotic pressure, as observed recently in several apoptotic conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-03-28 | Neuroscience letters |