Mouse Brain Mapped in 3D, at High Resolution
This update of the Allen Brain Institute atlas reveals detailed anatomical structures and provides a common framework for comparing brain datasets.
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Massive Proteomics Studies Peg Glial Metabolism, Myelination, to AD
Separately, cerebrovascular disease drove an uptick in neurofilament light in the brain, indicating neurodegeneration.
In Colombian Alzheimer’s Kindred, Blood NfL Climbs 22 Years Before Symptoms
The plasma biomarker neurofilament light was able to distinguish individual mutation carriers from noncarriers three years prior to onset.
Herpes Simplex Virus Triggers Amyloidosis in 3D Neural Cultures
Grown on doughnut-shaped supports, the cultures survive for years. They offer a versatile system for studying Alzheimer’s disease, the authors claim.
Simulating Tangle Spread Along Axons, Scientists Predict Tau PET Patterns
The modeling approach reinforces the idea that tau pathology propagates through the brain’s physical architecture, including neuronal networks.
Without TMEM106B, Lysosomal Traffic Jams Wreak Havoc in Neurons
In motor neurons of TMEM106b knockout mice, swollen vacuoles piled up in axons near the soma, rendering the mice wobbly and slow to react. The finding contradicts prior reports.
Different CSF Phospho-Taus Match Distinct Changes in Brain Pathology
Different forms of p-tau in cerebrospinal fluid reflect worsening plaque load, metabolism, and atrophy in the brain. They could help stage Alzheimer’s disease.
Does Alzheimer’s Start in the Heart of the Cholinergic System?
In people with Alzheimer’s biomarkers, the basal forebrain shrinks early, foreshadowing microglial neurotoxicity, atrophy in the medial temporal lobe, and cognitive decline.
Aβ in Lewy Body Disease: Two Diseases at Once, or Another Beast Entirely?
For people with Parkinson’s, carrying Alzheimer’s genetic risk variants upped their odds of harboring Aβ and tau pathology and getting dementia. In people with DLB, Aβ plaques worsened tau and Lewy pathology, and cognition.
Flortaucipir Autopsy Study Published
Avid’s postmortem validation data indicate Alzheimer’s can be diagnosed by visual examination of flortaucipir PET scans.
Paul Taylor Wins 2020 Potamkin Prize
Award recognizes discoveries of genetic variants that perturb liquid-liquid phase separation and increase risk for ALS-FTD and other neurodegenerative diseases.
Umbilical Cord With Presenilin Mutation Births New Cell Model of Familial AD
Umbilical cord stem cells from presenilin 1 E280A carriers, once differentiated into cholinergic-like neurons, pumped out Aβ42 and accumulated phosphorylated tau and apoptotic markers.
Without SORL1, Endosomes Swell in Neurons but not Microglia
Induced neurons lacking the Alzheimer’s risk gene can’t properly recycle APP.
Paper Alert: CryoEM Structures of α-Synuclein Published
In stark contrast to Aβ and tau fibrils, α-synuclein fibrils are asymmetric, comprising two different protofibrils.
217—The Best Phospho-Tau Marker for Alzheimer’s?
P-tau217 appears sooner than p-tau181 in the brain, and it distinguishes AD from controls and other dementias even more cleanly.
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