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dc.contributor.authorBarry, Andrew E
dc.contributor.authorKlyubin, Igor
dc.contributor.authorMc Donald, Jessica M
dc.contributor.authorMably, Alexandra J
dc.contributor.authorFarrell, Michael A
dc.contributor.authorScott, Michael
dc.contributor.authorWalsh, Dominic M
dc.contributor.authorRowan, Michael J
dc.date.accessioned2011-05-27T14:50:17Z
dc.date.available2011-05-27T14:50:17Z
dc.date.issued2011-05-18
dc.identifier.citationAlzheimer's Disease Brain-Derived Amyloid-{beta}-Mediated Inhibition of LTP In Vivo Is Prevented by Immunotargeting Cellular Prion Protein. 2011, 31 (20):7259-63 J. Neurosci.en
dc.identifier.issn1529-2401
dc.identifier.pmid21593310
dc.identifier.doi10.1523/JNEUROSCI.6500-10.2011
dc.identifier.urihttp://hdl.handle.net/10147/132290
dc.description.abstractSynthetic amyloid-β protein (Aβ) oligomers bind with high affinity to cellular prion protein (PrP(C)), but the role of this interaction in mediating the disruption of synaptic plasticity by such soluble Aβ in vitro is controversial. Here we report that intracerebroventricular injection of Aβ-containing aqueous extracts of Alzheimer's disease (AD) brain robustly inhibits long-term potentiation (LTP) without significantly affecting baseline excitatory synaptic transmission in the rat hippocampus in vivo. Moreover, the disruption of LTP was abrogated by immunodepletion of Aβ. Importantly, intracerebroventricular administration of antigen-binding antibody fragment D13, directed to a putative Aβ-binding site on PrP(C), prevented the inhibition of LTP by AD brain-derived Aβ. In contrast, R1, a Fab directed to the C terminus of PrP(C), a region not implicated in binding of Aβ, did not significantly affect the Aβ-mediated inhibition of LTP. These data support the pathophysiological significance of SDS-stable Aβ dimer and the role of PrP(C) in mediating synaptic plasticity disruption by soluble Aβ.
dc.language.isoenen
dc.relation.urlhttp://www.ncbi.nlm.nih.gov/pubmed/21593310en
dc.titleAlzheimer's Disease Brain-Derived Amyloid-{beta}-Mediated Inhibition of LTP In Vivo Is Prevented by Immunotargeting Cellular Prion Protein.en
dc.typeArticleen
dc.contributor.departmentDepartment of Pharmacology and Therapeutics and Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland, Laboratory for Neurodegenerative Research, School of Biomolecular and Biomedical Science, Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland, and Dublin Brain Bank, Pathology Department, Beaumont Hospital, Dublin 9, Ireland.en
dc.identifier.journalThe Journal of neuroscience : the official journal of the Society for Neuroscienceen
dc.description.provinceLeinster
html.description.abstractSynthetic amyloid-β protein (Aβ) oligomers bind with high affinity to cellular prion protein (PrP(C)), but the role of this interaction in mediating the disruption of synaptic plasticity by such soluble Aβ in vitro is controversial. Here we report that intracerebroventricular injection of Aβ-containing aqueous extracts of Alzheimer's disease (AD) brain robustly inhibits long-term potentiation (LTP) without significantly affecting baseline excitatory synaptic transmission in the rat hippocampus in vivo. Moreover, the disruption of LTP was abrogated by immunodepletion of Aβ. Importantly, intracerebroventricular administration of antigen-binding antibody fragment D13, directed to a putative Aβ-binding site on PrP(C), prevented the inhibition of LTP by AD brain-derived Aβ. In contrast, R1, a Fab directed to the C terminus of PrP(C), a region not implicated in binding of Aβ, did not significantly affect the Aβ-mediated inhibition of LTP. These data support the pathophysiological significance of SDS-stable Aβ dimer and the role of PrP(C) in mediating synaptic plasticity disruption by soluble Aβ.


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