Evidence map›Paper›PMID 29142266›Full record

ArticleScientific reports2017

Hyperspectral Raman imaging of neuritic plaques and neurofibrillary tangles in brain tissue from Alzheimer's disease patients.

Ralph Michael, Aufried Lenferink, Gijs F J M Vrensen, Ellen Gelpi, Rafael I Barraquer, Cees Otto

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
8.6field-weighted citation impact, top 2% 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

30 citing papers in PubMed, 67 citations in OpenAlex.

  1. Review
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  5. Low-frequency Raman spectra of amyloid fibrils.The Journal of chemical physics · 2025
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  10. Review
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  14. Hyperspectral Raman Imaging for Automated Recognition of Human Renal Amyloid.The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society · 2023
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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 4 institutions in 3 countries.

Ralph MichaelInstitut Universitari Barraquer, Universitat Autònoma de Barcelona, Barcelona, Spain.ORCID 0000-0001-5070-9219
Aufried LenferinkMedical Cell BioPhysics, University of Twente, Enschede, The Netherlands.
Gijs F J M VrensenDepartment of Ophthalmology, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands.
Ellen GelpiNeurological Tissue Bank of the Biobanc-Hospital Clinic-Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
Rafael I BarraquerInstitut Universitari Barraquer, Universitat Autònoma de Barcelona, Barcelona, Spain.
Cees OttoMedical Cell BioPhysics, University of Twente, Enschede, The Netherlands. c.otto@utwente.nl.
Universitat Autònoma de Barcelona · ESUniversity of Twente · NLBanc de Sang i Teixits · ESLeiden University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuritic plaques and neurofibrillary tangles are crucial morphological criteria for the definite diagnosis of Alzheimer's disease. We evaluated 12 unstained frontal cortex and hippocampus samples from 3 brain donors with Alzheimer's disease and 1 control with hyperspectral Raman microscopy on samples of 30 × 30 µm. Data matrices of 64 × 64 pixels were used to quantify different tissue components including proteins, lipids, water and beta-sheets for imaging at 0.47 µm spatial resolution. Hierarchical cluster analysis was performed to visualize regions with high Raman spectral similarities. The Raman images of proteins, lipids, water and beta-sheets matched with classical brain morphology. Protein content was 2.0 times, the beta-sheet content 5.6 times and Raman broad-band autofluorescence was 2.4 times higher inside the plaques and tangles than in the surrounding tissue. The lipid content was practically equal inside and outside. Broad-band autofluorescence showed some correlation with protein content and a better correlation with beta-sheet content. Hyperspectral Raman imaging combined with hierarchical cluster analysis allows for the identification of neuritic plaques and neurofibrillary tangles in unstained, label-free slices of human Alzheimer's disease brain tissue. It permits simultaneous quantification and distinction of several tissue components such as proteins, lipids, water and beta-sheets.

Indexed as

AgedAlzheimer DiseaseAmyloid beta-PeptidesBrainCluster AnalysisFemaleHippocampusHumansMiddle AgedNeurofibrillary TanglesNonlinear Optical MicroscopyPlaque, Amyloidtau ProteinsAmyloid beta-Peptidestau Proteins

Identifiers

PMID29142266
PMCPMC5688091
OpenAlexW2768090072

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.