Evidence map›Paper›PMID 35488792›Full record

ArticleAnnals of clinical and translational neurology2022

Corneal confocal microscopy to detect early immune-mediated small nerve fibre loss in AL amyloidosis.

Andreas Thimm, Alexander Carpinteiro, Sara Oubari, Maria Papathanasiou, Lukas Kessler, Christoph Rischpler, Rayaz Ahmed Malik, Hans Christian Reinhardt, Tienush Rassaf, Ken Herrmann and 3 more

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 26% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
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  5. Article
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  7. Article
  8. Article
  9. Observational
  10. Update on Corneal Confocal Microscopy Imaging.Diagnostics (Basel, Switzerland) · 2022
    Review
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

13 authors at 3 institutions in 3 countries.

Andreas ThimmDepartment of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany.ORCID 0000-0002-7806-9919
Alexander CarpinteiroDepartment of Hematology and Stem Cell Transplantation, University Hospital Essen, Essen, Germany.
Sara OubariDepartment of Hematology and Stem Cell Transplantation, University Hospital Essen, Essen, Germany.
Maria PapathanasiouDepartment of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Essen, Germany.
Lukas KesslerDepartment of Nuclear Medicine, University Hospital Essen, Essen, Germany.
Christoph RischplerDepartment of Nuclear Medicine, University Hospital Essen, Essen, Germany.
Rayaz Ahmed MalikInstitute of Cardiovascular Science, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.ORCID 0000-0002-7188-8903
Hans Christian ReinhardtDepartment of Hematology and Stem Cell Transplantation, University Hospital Essen, Essen, Germany.
Tienush RassafDepartment of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Essen, Germany.
Ken HerrmannDepartment of Nuclear Medicine, University Hospital Essen, Essen, Germany.
Christoph KleinschnitzDepartment of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany.
Mark Stettner *Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany.ORCID 0000-0002-8836-0443
Tim Hagenacker *Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany.ORCID 0000-0002-3631-3450
Essen University Hospital · DEWest German Heart and Vascular Center Essen · DEUniversity of Manchester · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveLight chain (AL) amyloidosis is a life-threatening disorder characterised by extracellular deposition of amyloid leading to dysfunction of multiple organs. Peripheral nerve involvement, particularly small fibre neuropathy, may be associated with poorer survival. Corneal confocal microscopy (CCM) is a rapid and non-invasive imaging technique to quantify corneal small nerve fibres and immune cells in vivo. We aimed to evaluate CCM as a tool for early diagnosis of peripheral nerve involvement in AL amyloidosis.

methodsCCM and nerve conduction studies (NCS) were undertaken in 21 newly diagnosed, treatment-naïve AL amyloidosis patients and 21 age- and sex-matched healthy controls. Corneal nerve fibre density (CNFD), corneal nerve branch density and fibre length, and cell infiltrates were quantified in the sub-basal layer of the cornea.

resultsThere was a significant reduction in CNFD and nerve fibre length, even without large fibre affection and an increase in cell density, particularly around corneal nerve fibres in patients with AL amyloidosis compared to controls. Additionally, cell infiltration correlated with reduced nerve fibre density in patients with AL amyloidosis, but reduced CNFD did not correlate with laboratory parameters of organ dysfunction.

interpretationOur study is the first to show that CCM allows rapid non-invasive identification of early small nerve fibre damage associated with immune cell infiltration in patients with AL amyloidosis. CCM detects peripheral nerve involvement more sensitively than NCS.

Indexed as

Immunoglobulin Light-chain AmyloidosisPeripheral Nervous System DiseasesCorneaHumansMicroscopy, ConfocalNerve FibersPeripheral Nerves

Identifiers

PMID35488792
PMCPMC9186132
OpenAlexW4225114709

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.