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Expression of hippocalcin and neural visinin-like calcium-binding protein 2 (NVP2) in aging rat brain was investigated by immunoblot and immunohistochemical analyses. In 3-month old rats, hippocalcin and NVP2 were present at high concentrations in hippocampal and cerebral pyramidal cells and dentate granule cells, with hippocalcin protein levels being five to ten times higher than NVP2 levels. Hippocalcin...
Glucocorticoid hormones potentiate the toxic effects of neuronal stressors. Alteration of gene expression by glucocorticoids could contribute to neuronal susceptibility by downregulating the synthesis of proteins necessary to adapt to challenge. Using heat shock of hippocampal slices as a model for cellular insult, protein synthesis has been examined in response to acute glucocorticoid administration...
Age-dependent changes in the distribution of microtubule-associated proteins (MAPs) were analyzed in young (3-months, N = 3) and old (24-months, N = 3) rat brain. In the young rats, MAP1 and MAP5 exhibited prominent immunostaining in the perikarya and dendrites whereas MAP2 was selectively localized in the dendrites. In the cerebellum, MAP2 was preferentially localized in finer and distal branches...
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