Dr. Seonha  Park  Dmd image

Dr. Seonha Park Dmd

1795 Main St Suite 212
Springfield MA 01103
413 325-5600
Medical School: Other - Unknown
Accepts Medicare: No
Participates In eRX: No
Participates In PQRS: No
Participates In EHR: No
License #: DN1856528
NPI: 1932516929
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Haploinsufficiency of human APOE reduces amyloid deposition in a mouse model of amyloid-β amyloidosis. - The Journal of neuroscience : the official journal of the Society for Neuroscience
The ε4 allele of the apolipoprotein E (APOE) gene is the strongest genetic risk factor for Alzheimer's disease (AD). Evidence suggests that the effect of apoE isoforms on amyloid-β (Aβ) accumulation in the brain plays a critical role in AD pathogenesis. Like in humans, apoE4 expression in animal models that develop Aβ amyloidosis results in greater Aβ and amyloid deposition than with apoE3 expression. However, whether decreasing levels of apoE3 or apoE4 would promote or attenuate Aβ-related pathology has not been directly addressed. To determine the effect of decreasing human apoE levels on Aβ accumulation in vivo, we generated human APOE isoform haploinsufficient mouse models by crossing APPPS1-21 mice with APOE isoform knock-in mice. By genetically manipulating APOE gene dosage, we demonstrate that decreasing human apoE levels, regardless of isoform status, results in significantly decreased amyloid plaque deposition and microglial activation. These differences in amyloid load between apoE3- and apoE4-expressing mice were not due to apoE4 protein being present at lower levels than apoE3. These data suggest that current therapeutic strategies to increase apoE levels without altering its lipidation state may actually worsen Aβ amyloidosis, while increasing apoE degradation or inhibiting its synthesis may be a more effective treatment approach.

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1795 Main St Suite 212 Springfield, MA 01103
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