Trem2 Deletion Reduces Late-Stage Amyloid Plaque Accumulation, Elevates the Aβ42:Aβ40 Ratio, and Exacerbates Axonal Dystrophy and Dendritic Spine Loss in the PS2APP Alzheimer's Mouse Model

Abstract excerpt

TREM2 is an Alzheimer's disease (AD) risk gene expressed in microglia. To study the role of Trem2 in a mouse model of β-amyloidosis, we compared PS2APP transgenic mice versus PS2APP mice lacking Trem2 (PS2APP;Trem2 ko ) at ages ranging from 4 to 22 months. Microgliosis was impaired in PS2APP;Trem2 ko mice, with Trem2 -deficient microglia showing compromised expression of proliferation/Wnt-related genes and marked...

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