Without SORL1, Endosomes Swell in Neurons but not Microglia
Induced neurons lacking the Alzheimer’s risk gene can’t properly recycle APP.
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Induced neurons lacking the Alzheimer’s risk gene can’t properly recycle APP.
In cell culture, slashing Aβ production by more than half harmed neuronal signaling, but a smaller cut maintained it.
New research suggests the R47H variant protects neurons from neurodegeneration, raising questions about staging and direction of future TREM2-based therapy.
By suppressing a single gene, scientists triggered the transformation of astrocytes into neurons in the mouse substantia nigra, where the converts released dopamine and connected with the striatum.
A mouse study claims that the small GTPase restrains pro-inflammatory responses in microglia. Aβ oligomers inhibit RhoA, promoting Aβ deposition and neurodegeneration.
Released from hippocampal neurons in response to experience, the cytokine prompted microglia to eat extracellular matrix around synapses. This facilitated growth of new spines, and sharpened memory.
This early marker distinguishes Alzheimer’s from controls and other neurodegenerative diseases more accurately than other biomarkers.
In large population datasets, people who had been vaccinated against influenza or pneumonia appeared less likely to develop AD.
In people with Alzheimer’s biomarkers, the basal forebrain shrinks early, foreshadowing microglial neurotoxicity, atrophy in the medial temporal lobe, and cognitive decline.
Alector’s AL002c antibody mobilizes microglia, reduces neuronal dystrophy, and restores normal behavior—all in mice. The clinical version is in Phase 1.
Among former National Football League players who died with CTE, tau tangles, crumbling white matter, and arteriolosclerosis independently contributed to dementia.
At AAIC, researchers touted phospho-tau species, especially p217 and p181. They tick up in CSF as an early response to amyloid accumulation.
At this year’s AAIC, no sooner had scientists reported that phospho-tau in the CSF might reflect early responses to amyloid, than they reported parallel data for phospho-tau in blood.
What’s with all those head-to-head comparison studies of academic and commercial biomarker tests? Could we not just pick one that works, and be done?
A plasma assay for Alzheimer’s could radically speed up screening for clinical trials; alas, competing assays don’t measure the same thing.