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Title: Nogo-A expression in the human hippocampus in normal aging and in Alzheimer disease
Authors: Gil, V.
Nicolas, O.
Mingorance, A.
Ureña, J.M.
Tang, B.L. 
Hirata, T.
Sáez-Valero, J.
Ferrer, I.
Soriano, E.
Del Río, J.A.
Keywords: Alzheimer disease
Human hippocampus
Myelinassociated proteins
Issue Date: May-2006
Citation: Gil, V., Nicolas, O., Mingorance, A., Ureña, J.M., Tang, B.L., Hirata, T., Sáez-Valero, J., Ferrer, I., Soriano, E., Del Río, J.A. (2006-05). Nogo-A expression in the human hippocampus in normal aging and in Alzheimer disease. Journal of Neuropathology and Experimental Neurology 65 (5) : 433-444. ScholarBank@NUS Repository.
Abstract: Myelin-associated proteins are involved in the formation and stabilization of myelin sheaths. In addition, they prevent axon regeneration and plasticity in the adult brain. Recent evidence suggests that the expression of certain myelin-associated proteins (e.g. Nogo-A) can be regulated by synaptic activity or by over-expression after neural lesions in brain syndromes such as temporal lobe epilepsy. However, no studies on Alzheimer disease (AD) have been reported in which cell loss and significant synaptic reorganization occurs. In the present study, we analyze in detail the expression of Nogo-A in the hippocampal formation in normal human aging and in AD. Our results indicate that Nogo-A is expressed by oligodendrocytes and neurons in the aged hippocampal formation. In addition, both granule cells and mossy fiber connections are also labeled in the old-aged hippocampi. Interestingly, Nogo-A is over-expressed by hippocampal neurons in AD and is associated with β-amyloid deposits in senile plaques. Taken together, our results reinforce the hypothesis that Reticulon proteins such as Nogo-A participate in the neuronal responses stemming from hippocampal formation during senescence, and particularly in AD. These findings also indicate that Reticulon proteins could be considered as new putative drug targets in therapies of neurodegenerative disorders. Copyright © 2006 by the American Association of Neuropathologists, Inc.
Source Title: Journal of Neuropathology and Experimental Neurology
ISSN: 00223069
DOI: 10.1097/01.jnen.0000222894.59293.98
Appears in Collections:Staff Publications

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