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Updated: Aug 8, 2026

Motor and Hippocampal Dependent Spatial Learning and Reference Memory Assessment in a Transgenic Rat Model of Alzheimer's Disease with Stroke
Published on: March 22, 2016
Neuropathological, biochemical and genetic alterations in AD
P H St George-Hyslop1, J McLaurin, P E Fraser
1Centre for Research in Neurodegenerative Diseases, Crescent West, University of Toronto, Toronto, Ontario, Canada.
Abnormal processing of beta-amyloid precursor protein (beta APP) is key in Alzheimer's disease (AD) pathogenesis. Current research focuses on modulating amyloid beta (A beta) production or inhibiting its aggregation to treat AD.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Alzheimer's disease (AD) pathogenesis is linked to amyloid beta (A beta) peptide production and aggregation.
- Abnormal processing of the beta-amyloid precursor protein (beta APP) is implicated in AD.
- The gamma-secretase enzyme, crucial for beta APP processing, remains unidentified, though presenilin genes are implicated.
Purpose of the Study:
- To elucidate molecular and cellular processes in A beta production and fibrillogenesis.
- To explore therapeutic strategies targeting A beta production and aggregation in Alzheimer's disease.
Main Methods:
- Investigating beta APP processing pathways, including gamma-secretase activity.
- Examining the role of presenilin 1 and 2 genes in gamma-secretase function.
- Considering apolipoprotein E (APOE) gene association with AD susceptibility.
Main Results:
- Experimental evidence points to aberrant beta APP processing as central to AD.
- Presenilin 1 and 2 genes appear necessary for gamma-secretase activity.
- Apolipoprotein E (APOE) gene is associated with AD susceptibility.
Conclusions:
- Targeting A beta production by inhibiting beta-secretase or gamma-secretase is a potential therapeutic strategy.
- Inhibiting A beta aggregation is another area of active investigation for AD treatment.
- Understanding beta APP processing is critical for developing effective Alzheimer's disease therapies.
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