Evidence map›Paper›PMID 42575163›Full record

ArticleJournal of molecular biology2026

Brain-seeded 42-residue Amyloid-β Fibrils That Resemble Fibrils Directly Extracted From Alzheimer's Disease Brain Tissue.

Kent R Thurber, Myungwoon Lee, Robert Tycko

Abstract read
In one paragraph

Article in Journal of molecular biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Kent R ThurberLaboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0520, United States.
Myungwoon LeeLaboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0520, United States; Department of Chemistry, Drexel University, Philadelphia, PA 19104, United States.
Robert TyckoLaboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0520, United States. Electronic address: robertty@mail.nih.gov.

Funding

Structural Studies of Alzheimer's beta-Amyloid FibrilsZIADK029061 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI TYCKO, ROBERT · 2009 to 2025
$8.4M
Intramural NIH HHS ZIA DK029061
6 · The paper itself

Abstract

Fibrils formed by the 42-residue amyloid-β peptide (Aβ42) are known to be polymorphic, with molecular conformations and supramolecular structures that depend on conditions of nucleation, growth, seeding, or other factors. Structural studies of Aβ42 fibrils that develop in human brain tissue have been based on two different approaches, either direct extraction and partial purification of fibrils from brain tissue for characterization by cryogenic electron microscopy (cryo-EM) or growth of fibrils in vitro from seeds in amyloid-containing brain tissue extracts for characterization by solid state nuclear magnetic resonance (ssNMR) or cryo-EM. To date, studies of brain-extracted and brain-seeded Aβ42 fibrils have produced qualitatively different sets of structures. Here we report structures of two new brain-seeded Aβ42 fibril polymorphs, derived from cortical tissue of an Alzheimer's disease (AD) patient, that share certain structural features with previously characterized polymorphs extracted from AD brain tissue. These structures contribute to our understanding of the relationships between brain-seeded and brain-extracted fibril structures and expand our understanding of the full range of polymorphism in amyloid-β fibrils.

Indexed as

Alzheimer DiseaseAmyloidAmyloid beta-PeptidesBrainPeptide FragmentsCryoelectron MicroscopyHumansAmyloidAmyloid beta-Peptidesamyloid beta-protein (1-42)Peptide FragmentsAlzheimer’s diseaseamyloid-βcryogenic electron microscopyfibril structurepolymorphism

Identifiers

PMID42575163
PMCPMC13505207

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.