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C. Karch

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Open access Sep 2026

Technology‐natives and technology‐adopters: Age differences in remote cognitive assessment in Alzheimer disease

Cognitive changes in the asymptomatic stages of Alzheimer disease (AD) are subtle and difficult to detect using conventional cognitive tests. High‐frequency smartphone‐based testing may improve sensitivity to these changes, but generational differences in technology use could influence performance. We examined generati...

Samhita Katteri, Hannah M. Wilks, Matthew S. Welhaf et al. · 0 citations
Open access Sep 2026

Human iPSC models reveal APOE4-induced microglial remodeling and extracellular vesicle dysregulation in AD pathogenesis

Summary The apolipoprotein E ε4 (APOE4) allele is the strongest genetic risk factor for late-onset Alzheimer’s disease (AD), yet the mechanistic underpinnings by which it alters human microglial function remain poorly understood. Here, we utilize CRISPR/Cas9-engineered isogenic human induced pluripotent stem cell-deriv...

Y. You, Son N. Nguyen, Sean D. Mann et al. · 0 citations
Open access Sep 2026

MAPT regulates autophagic-lysosomal function and phagocytosis in human microglia

Using isogenic human induced pluripotent stem cell-derived microglia carrying the pathogenic MAPT IVS10+16 mutation, tau is identified as a regulator of microglial lysosomal function and degradative capacity is identified as a modifiable component of the microglial response to tau pathology.

Kylie J. Schache, Rui Zhang, Audrey Street et al. · 0 citations
Open access Jul 2026

Ms4a4a loss reprograms amyloid-associated microglia and limits dense-core plaque-associated tau spreading

These findings identify Ms4a4a as a regulator of plaque-associated microglial programs linked to NP-tau accumulation in the amyloid-bearing brain, which supports a model in which AD resilience-associated microglial pathways selectively shape plaque-associated microenvironments that promote downstream tau pathology.

E. Danhash, Shao-Yu Fang, Jacob A. Marsh et al. · 0 citations

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