Not Merely Tau Tombstones, Neurofibrillary Tangles Are Dynamic
In mouse brain slices at least, tau shuffles in and out of protein inclusions. The tangles grew more inert as the tissue aged.
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In Triculture Model, Astrocyte-Microglia Cross Talk Spurs Inflammation
When cultured with human neurons expressing a familial Alzheimer’s gene, both microglia and astrocytes were necessary to spike complement C3 and send inflammation into overdrive.
PWAS x GWAS? Proteome Analysis Nets 10 New Alzheimer’s Genes
By comparing protein changes with GWAS data, scientists identified new links to AD. This method can unearth genes that otherwise fall short of genome-wide significance.
Make Proteins, Save Memory: The Cellular Stress Response and Synapses
In mouse models of Aβ toxicity and amyloidosis, inhibiting the integrated stress response restored protein production, spared synapses, and brought back memory.
Striking Microgliosis in New APP Knock-in Mice
Plaques abound, cytokines spike, microglia swell with lipids and send out spermine SOS signals in Denali model. Mice will be shared, allowing unrestricted use.
Would ApoE Make a Better Therapeutic Target Than Aβ?
In mice, an anti-ApoE antibody removed plaques from the brain’s parenchyma and blood vessels better than aducanumab. Importantly, it caused no microhemorrhages.
Cognition in Aging Women: From Higher Perch, a Steeper Fall
Based on pooled data from five well-characterized cohorts, women appear to initially outperform men, but then slide faster, on global cognition and executive function. Oddly, this was not true for memory.
Fatal Gift Wrap: Neurons Fall for Packaged Tau Oligomers
Neurons take up extracellular vesicles containing tau oligomers more readily than they do free tau. Some gift: This speeds the march of tauopathy through mouse brain.
Aβ Binds Glutamate Receptors. Only in Guys, Though.
In both mice and (wo)men, the sex difference comes down to an Aβ-glutamate receptor-prion protein troika.
Expression Analysis Uncovers Three Distinct Forms of Alzheimer’s
High amyloid burden and neuroinflammation, neuronal excitability, and tangles and oligodendrocyte loss distinguish the disease types.
Plasma P-Tau181 Predicts, Monitors Alzheimer’s Progression
The blood-based marker may be far more scalable and cost-effective for tracking the disease than PET imaging and CSF biomarkers.
Myeloid Metabolic Crisis May Trigger Cognitive Decline in Aging Brain
Aging macrophages and microglia poorly burn glucose and enter an inflammatory state. Revving their metabolism preserved synapses and memory in mice. What does prostaglandin have to do with it?
How Does COVID-19 Affect the Brain?
Some people with severe COVID-19 have neurovascular injury and elevated markers of neural damage in their blood and CSF. What’s going on in their brains?
Aducanumab Decision Delayed for Three Months
In response to an FDA request, the drug’s sponsor submitted new data analyses. The agency moved the action date to June 7.
Selective Vulnerability News: RORB Neurons Are First Victims of Tangles
By tracing the transcriptomes of neurons that wither early and late in the course of Alzheimer’s disease, researchers peg subpopulations of excitatory neurons in entorhinal cortex as selectively vulnerable to tau. Reactive astrocytes aid and abet.
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