Evidence map›Paper›PMID 33597025›Full record

ArticleActa neuropathologica communications2021

Iron loading is a prominent feature of activated microglia in Alzheimer's disease patients.

Boyd Kenkhuis, Antonios Somarakis, Lorraine de Haan, Oleh Dzyubachyk, Marieke E IJsselsteijn, Noel F C C de Miranda, Boudewijn P F Lelieveldt, Jouke Dijkstra, Willeke M C van Roon-Mom, Thomas Höllt and 1 more

Abstract read
In one paragraph

Article in Acta neuropathologica communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
112citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

112 citing papers in PubMed, 1 synthesis or guideline pooled it.

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52 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

11 authors.

Boyd Kenkhuis *Department of Human Genetics, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands. b.kenkhuis@lumc.nl.ORCID 0000-0002-4000-6779
Antonios Somarakis *Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
Lorraine de HaanDepartment of Pathology, Leiden University Medical Center, Leiden, The Netherlands.
Oleh DzyubachykDepartment of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
Marieke E IJsselsteijnDepartment of Pathology, Leiden University Medical Center, Leiden, The Netherlands.
Noel F C C de MirandaDepartment of Pathology, Leiden University Medical Center, Leiden, The Netherlands.
Boudewijn P F LelieveldtDepartment of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
Jouke DijkstraDepartment of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
Willeke M C van Roon-MomDepartment of Human Genetics, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
Thomas HölltDepartment of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
Louise van der WeerdDepartment of Human Genetics, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Brain iron accumulation has been found to accelerate disease progression in amyloid-β(Aβ) positive Alzheimer patients, though the mechanism is still unknown. Microglia have been identified as key players in the disease pathogenesis, and are highly reactive cells responding to aberrations such as increased iron levels. Therefore, using histological methods, multispectral immunofluorescence and an automated in-house developed microglia segmentation and analysis pipeline, we studied the occurrence of iron-accumulating microglia and the effect on its activation state in human Alzheimer brains. We identified a subset of microglia with increased expression of the iron storage protein ferritin light chain (FTL), together with increased Iba1 expression, decreased TMEM119 and P2RY12 expression. This activated microglia subset represented iron-accumulating microglia and appeared morphologically dystrophic. Multispectral immunofluorescence allowed for spatial analysis of FTL

Indexed as

AdultAgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesApoferritinsAutopsyBrainFemaleHumansImmunohistochemistryIronMaleMicrogliaNeurodegenerative DiseasesPhenotypeAmyloid beta-PeptidesApoferritinsIronAlzheimerFerritinHumanIronMicroglia

Identifiers

PMID33597025
PMCPMC7887813

What OpenQuestion holds

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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.