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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New Assay, New Cohorts—Plasma p-Tau181 Looks Even Better
At AAT-ADPD, researchers report how they built on prior reports that a person’s blood level of p-tau181 tells if they have Alzheimer’s.
A Phospho-Tau Plasma Assay for Alzheimer’s?
Two papers report that phosphorylated tau in the blood distinguishes people with AD from healthy controls and from people with frontotemporal and vascular dementias.
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.
Tau2020: Meeting for Tauopathies Debuts Genetic Variants
By engaging scientists studying every tau-based disorder, a new conference aimed to foster collaborations and research directions.
How Much Amyloid Will Kick Off Tangles, and Decline?
At HAI 2020, scientists more precisely quantified the relationship between plaques, tangles, and cognitive decline.
Can PET Match Up Areas of Protein Deposit With Alzheimer’s Symptoms?
Amyloid and tau PET are helping scientists pinpoint the underlying cause of specific AD symptoms. Perhaps imaging of certain brain regions will help predict an individual’s progression.
Tau PET: The Field Expands Rapidly
At the HAI 2020 conference, the tracers PI-2620 and APN-1607 appeared to bind frontotemporal dementia tau. MK-6240 looked highly sensitive. And JNJ-067 and SNFT-1 are two new kids in town.
Multimodal Imaging of Neurodegenerative Diseases Links Pathology and Cellular Dysfunction
Synapse loss and mitochondrial stress, as seen by separate PET tracers, go hand-in-hand in Alzheimer’s, Parkinson’s, and frontotemporal dementia.
PET Tracer Detects Synapse Loss Across Alzheimer’s Brain
New research presented at the HAI conference also finds links between UCB-J uptake and plaques, tangles, and cognitive decline.
Tau PET Scans Turn Positive When Amyloid Does; Symptoms Follow
Data from different next-generation tracers look similar. It shows spreading plaques kick off tangles by Braak region; memory starts slipping later.
2019—A Year of Hope for Alzheimer's Research
Happy New Year, readers! Yes, 2019 has passed, but so much happened last year that capturing the essence took longer than usual. Our mega year-end story is now posted for your reading pleasure.
Amyloid Clearance: Check. Cognitive Benefit: Um … Maybe.
Plaque-busting antibodies reset the time course of amyloid accumulation, but so far provide only hints of a clinical benefit in mild AD. Good news: once gone, plaque stays gone for a while.
Blood Tests of Phospho-Tau, Aβ42, Track With Brain Amyloid
Using mass spectrometry to detect teensy amounts of phospho-tau species in plasma, researchers reported that p-tau-217 and p-tau-181 picked out people with Aβ pathology. Differences between groups appear to be huge. An MS-based test for plasma Aβ42 corresponded to brain amyloid, and is going in for regulatory approval.
Fluid AD Biomarkers Link P-Tau to Synapses, Inflammation
An expanded set of CSF biomarkers exposed tight connections between p-tau, synaptic dysfunction, and neuroinflammation in people with brain amyloid.
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