Evidence map›Paper›PMID 22259618›Full record

ArticleJournal of clinical neurology (Seoul, Korea)2011

Elevated levels of α-synuclein oligomer in the cerebrospinal fluid of drug-naïve patients with Parkinson's disease.

Min Jeong Park, Sang-Myung Cheon, Hye-Ran Bae, Sang-Ho Kim, Jae Woo Kim

Open access · diamondAbstract read
In one paragraph

Article in Journal of clinical neurology (Seoul, Korea), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 1 pooled it
6.0field-weighted citation impact, top 3% 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

106 citing papers in PubMed, 1 synthesis or guideline pooled it, 187 citations in OpenAlex.

  1. Plasma apolipoprotein A1 associates with age at onset and motor severity in early Parkinson's disease patients.Movement disorders : official journal of the Movement Disorder Society · 2015
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46 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

5 authors at 2 institutions in 2 countries.

Min Jeong ParkDepartment of Neurology, Bongseng Memorial Hospital, Busan, Korea.
Sang-Myung Cheon
Hye-Ran Bae
Sang-Ho Kim
Jae Woo Kim
Dong-A University · KRMemorial Hospital of South Bend · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThe detection of α-synuclein in the body fluids of patients with synucleinopathy has yielded promising but inconclusive results, in part because of conformational changes of α-synuclein in response to environmental conditions. The aim of this study was to determine the feasibility of using α-synuclein as a biological marker for Parkinson's disease (PD).

methodsTwenty-three drug-naïve patients with PD (age 62.4±12.7 years, mean±SD; 11 males) and 29 age- and sex-matched neurologic control subjects (age 60.1±16.2 years; 16 males) were recruited. The levels of oligomeric and total α-synuclein in the cerebrospinal fluid (CSF) and plasma were measured using two simultaneous enzyme-linked immunosorbent assays.

resultsThe level of α-synuclein oligomer in the CSF of PD patients was significantly higher in PD patients than in neurological controls, but other findings (plasma α-synuclein oligomer and total α-synuclein in CSF and plasma) did not differ significantly between the two groups. When the control subjects were divided into a symptomatic control group (11 patients who complained of parkinsonian symptoms and were diagnosed with hydrocephalus and drug-induced or vascular parkinsonism) and a neurologic control group (10 normal subjects and 8 patients with diabetic ophthalmoplegia), the level of α-synuclein oligomer in the CSF was still significantly higher in PD patients than in both of the control subgroups.

conclusionsThese findings provide further evidence for a pathogenic role of the α-synuclein oligomer and suggest that CSF levels of α-synuclein oligomer can be a reliable marker for PD.

Indexed as

alpha-synucleincerebrospinal fluidenzyme-linked immunosorbent assayParkinson's disease

Identifiers

PMID22259618
PMCPMC3259496
OpenAlexW2013542960

What OpenQuestion holds

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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.