Evidence map›Paper›PMID 26993139›Full record

ArticleActa neuropathologica2016

Presynaptic dystrophic neurites surrounding amyloid plaques are sites of microtubule disruption, BACE1 elevation, and increased Aβ generation in Alzheimer's disease.

Katherine R Sadleir, Patty C Kandalepas, Virginie Buggia-Prévot, Daniel A Nicholson, Gopal Thinakaran, Robert Vassar

Open access · hybridAbstract read
In one paragraph

Article in Acta neuropathologica, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 177 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
177citing papers in PubMed, 1 pooled it
11.9field-weighted citation impact, top 1% of its field
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

177 citing papers in PubMed, 1 synthesis or guideline pooled it, 290 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. International journal of molecular sciences · 2026
    Review
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  16. Amyloid Beta Oligomers as Early Triggers of Neuronal Cytoskeleton Dysfunction in Alzheimer's Disease.Pathophysiology : the official journal of the International Society for Pathophysiology · 2026
    Review
  17. Article
  18. Article
  19. Review
  20. Autophagy-lysosomal pathway in neurodegeneration.Molecular neurodegeneration advances · 2026
    Review

117 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 1 country.

Katherine R SadleirDepartment of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA.
Patty C KandalepasDepartment of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA.
Virginie Buggia-PrévotDepartments of Neurobiology, Neurology and Pathology, The University of Chicago, Chicago, IL, 60637, USA.
Daniel A NicholsonDepartment of Neurological Sciences, Rush University, Chicago, IL, 60612, USA.
Gopal ThinakaranDepartments of Neurobiology, Neurology and Pathology, The University of Chicago, Chicago, IL, 60637, USA.
Robert VassarDepartment of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA. r-vassar@northwestern.edu.
Northwestern University · USUniversity of Chicago · USRush University · US

Funding

Tumor Environment and Metastasis (TEAM) Research ProgramP30CA060553 · NCI · NORTHWESTERN UNIVERSITY AT CHICAGO · PI LEONIDAS C. PLATANIAS · 1993 to 2026
$153.9M
Neuropathology CoreP30AG013854 · NIA · NORTHWESTERN UNIVERSITY AT CHICAGO · PI MESULAM, MAREK-MARSEL M · 1996 to 2020
$28.9M
STRUCTURAL AND FUNCTIONAL ANALYSIS OF PRESENILINSR01AG019070 · NIA · UNIVERSITY OF CHICAGO · PI THINAKARAN, GOPAL · 2001 to 2015
$4.9M
Molecular Neuropathology and Mechanisms of BACE1 Elevation in Alzheimer's DiseaseR01AG030142 · NIA · NORTHWESTERN UNIVERSITY AT CHICAGO · PI VASSAR, ROBERT J · 2007 to 2019
$3.1M
Proteomic reconstructive microscopy of healthy and diseased dendritesR01AG047073 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI NICHOLSON, DANIEL A · 2013 to 2016
$1.3M
Computational neurobiology of hippocampal dendritesK02AG050767 · NIA · RUSH UNIVERSITY MEDICAL CENTER · PI NICHOLSON, DANIEL A · 2015 to 2019
$603k
Olympus FV1000MPE Multiphoton MicroscopeS10OD010398 · OD · NORTHWESTERN UNIVERSITY AT CHICAGO · PI CHEW, TENG-LEONG · 2012 to 2012
$551k
Andor Revolution XD Live Cell Imaging System with Photomanipulation LaserS10RR031680 · NCRR · NORTHWESTERN UNIVERSITY AT CHICAGO · PI GELFAND, VLADIMIR I · 2011 to 2011
$437k
NCI NIH HHS P30 CA060553NCRR NIH HHS S10 RR031680NIA NIH HHS K02 AG050767NIA NIH HHS P30 AG013854NIA NIH HHS R01 AG019070NIA NIH HHS R01 AG030142NIA NIH HHS R01 AG047073NIH HHS S10 OD010398
6 · The paper itself

Abstract

Alzheimer's disease (AD) is characterized by amyloid plaques composed of the β-amyloid (Aβ) peptide surrounded by swollen presynaptic dystrophic neurites consisting of dysfunctional axons and terminals that accumulate the β-site amyloid precursor protein (APP) cleaving enzyme (BACE1) required for Aβ generation. The cellular and molecular mechanisms that govern presynaptic dystrophic neurite formation are unclear, and elucidating these processes may lead to novel AD therapeutic strategies. Previous studies suggest Aβ may disrupt microtubules, which we hypothesize have a critical role in the development of presynaptic dystrophies. To investigate this further, here we have assessed the effects of Aβ, particularly neurotoxic Aβ42, on microtubules during the formation of presynaptic dystrophic neurites in vitro and in vivo. Live-cell imaging of primary neurons revealed that exposure to Aβ42 oligomers caused varicose and beaded neurites with extensive microtubule disruption, and inhibited anterograde and retrograde trafficking. In brain sections from AD patients and the 5XFAD transgenic mouse model of amyloid pathology, dystrophic neurite halos with BACE1 elevation around amyloid plaques exhibited aberrant tubulin accumulations or voids. At the ultrastructural level, peri-plaque dystrophies were strikingly devoid of microtubules and replete with multi-lamellar vesicles resembling autophagic intermediates. Proteins of the microtubule motors, kinesin and dynein, and other neuronal proteins were aberrantly localized in peri-plaque dystrophies. Inactive pro-cathepsin D also accumulated in peri-plaque dystrophies, indicating reduced lysosomal function. Most importantly, BACE1 accumulation in peri-plaque dystrophies caused increased BACE1 cleavage of APP and Aβ generation. Our study supports the hypothesis that Aβ induces microtubule disruption in presynaptic dystrophic neurites that surround plaques, thus impairing axonal transport and leading to accumulation of BACE1 and exacerbation of amyloid pathology in AD.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAmyloid Precursor Protein SecretasesAnimalsAspartic Acid EndopeptidasesAxonsDisease Models, AnimalMice, Inbred C57BLMice, TransgenicNeuritesPlaque, AmyloidPresynaptic TerminalsAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAmyloid Precursor Protein SecretasesAspartic Acid EndopeptidasesBace1 protein, mouse5XFAD miceAlzheimer’s diseaseAmyloidAxonal transportAβBACE1Cathepsin DDystrophic neuriteMicrotubuleTubulin

Identifiers

PMID26993139
PMCPMC4947125
OpenAlexW2297442499

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.