Evidence map›Paper›PMID 35750465›Full record

ArticleAnnals of clinical and translational neurology2022

Phosphorylated alpha-synuclein in Iba1-positive macrophages in the skin of patients with Parkinson's disease.

Hideki Oizumi, Kenshi Yamasaki, Hiroyoshi Suzuki, Saki Ohshiro, Yuko Saito, Shigeo Murayama, Yoko Sugimura, Takafumi Hasegawa, Kohji Fukunaga, Atsushi Takeda

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
1.7field-weighted citation impact, top 14% 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, 14 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Research Progress in Skin Aging and Immunity.International journal of molecular sciences · 2024
    Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. The grand challenge of autonomic disorders.Frontiers in neurology · 2022
    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 4 institutions in 1 country.

Hideki OizumiDepartment of Neurology, National Hospital Organization Sendai Nishitaga Hospital, Sendai, Japan.ORCID 0000-0002-2856-4233
Kenshi YamasakiDepartment of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Hiroyoshi SuzukiDepartment of Pathology and Laboratory Medicine, National Hospital Organization Sendai Medical Center, Sendai, Japan.
Saki OhshiroDepartment of Neurology, National Hospital Organization Sendai Nishitaga Hospital, Sendai, Japan.
Yuko SaitoDepartment of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan.
Shigeo MurayamaDepartment of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan.
Yoko SugimuraDepartment of Neurology, National Hospital Organization Sendai Nishitaga Hospital, Sendai, Japan.
Takafumi HasegawaDepartment of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan.
Kohji FukunagaDepartment of Pharmacology, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan.
Atsushi TakedaDepartment of Neurology, National Hospital Organization Sendai Nishitaga Hospital, Sendai, Japan.ORCID 0000-0001-8039-2486
Tohoku University · JPSendai Nishitaga National Hospital · JPTokyo Metropolitan Geriatric Hospital · JPSendai Medical Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIncreasing evidence suggests that alpha-synuclein (αSyn) accumulation in cholinergic and adrenergic fibers in the skin is a useful biomarker to diagnose idiopathic Parkinson's disease (IPD). It has been widely reported that phosphorylated αSyn (p-αSyn) deposits in autonomic fibers in IPD are a biomarker in the skin, but other tissue localizations have not been fully investigated.

objectiveIt has been previously suggested that αSyn aggregates activate peripheral macrophages and that peripheral macrophages ingest pathological αsyn aggregates in aged rats or IPD patients. However, it remains to be elucidated whether peripheral macrophages in the skin of IPD patients accumulate αSyn. We evaluated whether (1) p-αSyn deposits in dermal macrophages might represent a useful biomarker for IPD and (2) dermal macrophages play a role in the underlying pathogenesis of IPD.

methodsWe performed an immunohistological analysis of skin biopsy specimens from IPD patients and controls.

resultsWe found that (1) p-αSyn accumulation is present in dermal macrophages in skin biopsy specimens from patients with IPD, (2) not only dermal adrenergic fibers with p-αSyn deposits but also dermal macrophages with p-αSyn deposits are useful biomarkers for IPD patients and (3) the number of macrophages was significantly positively correlated with the number of macrophages with p-αSyn deposits in the dermis of IPD patients.

interpretationOur results suggest that dermal macrophages, which are innate immune cells, play an important role in IPD patients and are a novel biomarker for IPD.

Indexed as

alpha-SynucleinParkinson DiseaseAnimalsBiomarkersMacrophagesRatsSkinalpha-SynucleinBiomarkers

Identifiers

PMID35750465
PMCPMC9380156
OpenAlexW4283456842

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.