PMID- 26402095 OWN - NLM STAT- MEDLINE DCOM- 20160803 LR - 20151031 IS - 1875-8908 (Electronic) IS - 1387-2877 (Linking) VI - 48 IP - 4 DP - 2015 TI - sAbetaPPalpha Improves Hippocampal NMDA-Dependent Functional Alterations Linked to Healthy Aging. PG - 927-35 LID - 10.3233/JAD-150297 [doi] AB - This study shows a decrease in soluble amyloid-beta protein precursor-alpha (sAbetaPPalpha) levels, but no change in sAbetaPPbeta, in the rat hippocampus during healthy aging, associated with the weaker expression of N-methyl-D-aspartate receptor (NMDAR)-dependent long-term potentiation (LTP) in the CA1 area of hippocampal slices. Exogenous application of recombinant sAbetaPPalpha increases NMDAR activation in aged animals and could rescue the age-related LTP deficits described. In contrast, it does not affect basal synaptic transmission or glutamate release. These results indicate that improving synaptic sAbetaPPalpha availability at synapses helps in reducing the functional NMDAR-related deregulation of hippocampal networks linked to aging. FAU - Moreno, Laura AU - Moreno L FAU - Rose, Christiane AU - Rose C FAU - Mohanraj, Arun AU - Mohanraj A FAU - Allinquant, Bernadette AU - Allinquant B FAU - Billard, Jean-Marie AU - Billard JM FAU - Dutar, Patrick AU - Dutar P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Alzheimers Dis JT - Journal of Alzheimer's disease : JAD JID - 9814863 RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 0 (Recombinant Proteins) RN - EC 3.4.- (Amyloid Precursor Protein Secretases) SB - IM MH - Aging/*physiology MH - Amyloid Precursor Protein Secretases/metabolism MH - Amyloid beta-Protein Precursor/administration & dosage/*metabolism MH - Animals MH - Blotting, Western MH - Electric Stimulation MH - Electrophoresis, Polyacrylamide Gel MH - Excitatory Postsynaptic Potentials/physiology MH - Hippocampus/*physiology MH - Long-Term Potentiation/*physiology MH - Microelectrodes MH - Rats, Sprague-Dawley MH - Receptors, N-Methyl-D-Aspartate/*metabolism MH - Recombinant Proteins/administration & dosage/metabolism MH - Tissue Culture Techniques OTO - NOTNLM OT - Alzheimer's disease OT - NMDA receptors OT - amyloid-beta protein precursor OT - glutamate OT - memory OT - mouse hippocampus OT - synaptic plasticity OT - alpha-secretase EDAT- 2015/09/25 06:00 MHDA- 2016/08/04 06:00 CRDT- 2015/09/25 06:00 PHST- 2015/09/25 06:00 [entrez] PHST- 2015/09/25 06:00 [pubmed] PHST- 2016/08/04 06:00 [medline] AID - JAD150297 [pii] AID - 10.3233/JAD-150297 [doi] PST - ppublish SO - J Alzheimers Dis. 2015;48(4):927-35. doi: 10.3233/JAD-150297.