Evidence map›Paper›PMID 33453282›Full record

ArticleThe Journal of biological chemistry

Cu, Fe, and Zn isotope ratios in murine Alzheimer's disease models suggest specific signatures of amyloidogenesis and tauopathy.

Nikolay Solovyev, Ahmed H El-Khatib, Marta Costas-Rodríguez, Karima Schwab, Elizabeth Griffin, Andrea Raab, Bettina Platt, Franz Theuring, Jochen Vogl, Frank Vanhaecke

Open access · goldAbstract read
In one paragraph

Article in The Journal of biological chemistry. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 6% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Are high copper levels related to Alzheimer's and Parkinson's diseases? A systematic review and meta-analysis of articles published between 2011 and 2022.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2024
    Pooled it
  2. Article
  3. Article
  4. IntravenousJournal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2025
    Article
  5. Anti-inflammatory effects ofScientific reports · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Impact of aging on copper isotopic composition in the murine brain.Metallomics : integrated biometal science · 2024
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. High-Precision Isotopic Analysis of Cu and FeFrontiers in chemistry · 2022
    Article
  16. Iron and Alzheimer's Disease: From Pathology to Imaging.Frontiers in human neuroscience · 2022
    Review
  17. Article
  18. Article
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

10 authors at 6 institutions in 5 countries.

Nikolay SolovyevDepartment of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Ghent, Belgium.
Ahmed H El-KhatibBAM Bundesanstalt für Materialforschung und -prüfung, Division 1.1 Inorganic Trace Analysis, Berlin, Germany; Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, African Union Authority St, Abbassia, Ain Shams University, Cairo, Egypt.
Marta Costas-RodríguezDepartment of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Ghent, Belgium.
Karima SchwabInstitute of Medical Sciences, School of Medicine, Medical Sciences & Nutrition, Foresterhill, University of Aberdeen, Aberdeen, Scotland, United Kingdom.
Elizabeth GriffinTrace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland, United Kingdom.
Andrea RaabTrace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, Scotland, United Kingdom; Institute of Chemistry, Environmental Analytical Chemistry, University of Graz, Graz, Austria.
Bettina PlattInstitute of Medical Sciences, School of Medicine, Medical Sciences & Nutrition, Foresterhill, University of Aberdeen, Aberdeen, Scotland, United Kingdom.
Franz TheuringCharité - Universitätsmedizin Berlin, Institute of Pharmacology, Berlin, Germany.
Jochen VoglBAM Bundesanstalt für Materialforschung und -prüfung, Division 1.1 Inorganic Trace Analysis, Berlin, Germany.
Frank VanhaeckeDepartment of Chemistry, Atomic & Mass Spectrometry-A&MS Research Unit, Ghent University, Ghent, Belgium. Electronic address: frank.vanhaecke@ugent.be.
Ghent University · BEUniversity of Aberdeen · GBAin Shams University · EGCharité - Universitätsmedizin Berlin · DEFederal Institute For Materials Research and Testing · DEUniversity of Graz · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's disease (AD) is characterized by accumulation of tau and amyloid-beta in the brain, and recent evidence suggests a correlation between associated protein aggregates and trace elements, such as copper, iron, and zinc. In AD, a distorted brain redox homeostasis and complexation by amyloid-beta and hyperphosphorylated tau may alter the isotopic composition of essential mineral elements. Therefore, high-precision isotopic analysis may reveal changes in the homeostasis of these elements. We used inductively coupled plasma-mass spectrometry (ICP-MS)-based techniques to determine the total Cu, Fe, and Zn contents in the brain, as well as their isotopic compositions in both mouse brain and serum. Results for male transgenic tau (Line 66, L66) and amyloid/presenilin (5xFAD) mice were compared with those for the corresponding age- and sex-matched wild-type control mice (WT). Our data show that L66 brains showed significantly higher Fe levels than did those from the corresponding WT. Significantly less Cu, but more Zn was found in 5xFAD brains. We observed significantly lighter isotopic compositions of Fe (enrichment in the lighter isotopes) in the brain and serum of L66 mice compared with WT. For 5xFAD mice, Zn exhibited a trend toward a lighter isotopic composition in the brain and a heavier isotopic composition in serum compared with WT. Neither mouse model yielded differences in the isotopic composition of Cu. Our findings indicate significant pathology-specific alterations of Fe and Zn brain homeostasis in mouse models of AD. The associated changes in isotopic composition may serve as a marker for proteinopathies underlying AD and other types of dementia.

Indexed as

Alzheimer DiseaseAmyloid beta-Protein PrecursorAnimalsCopperDisease Models, AnimalGene ExpressionIronMaleMiceMice, Inbred C57BLMice, TransgenicMutationPhosphorylationPresenilin-1Protein AggregatesSpectrophotometry, AtomicAmyloid beta-Protein PrecursorAPP protein, humanCopperIronMAPT protein, humanPresenilin-1Protein AggregatesPSEN1 protein, humantau ProteinsZincAlzheimer’s diseaseamyloid-betabraincopperironisotopic analysismulticollector inductively coupled plasma–mass spectrometry (ICP-MS)serumtauzinc

Identifiers

PMID33453282
PMCPMC7949056
OpenAlexW3120575083

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

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 Socratic graph.