Evidence map›Paper›PMID 34315950›Full record

ArticleScientific reports2021

Elevated plasma miR-133b and miR-221-3p as biomarkers for early Parkinson's disease.

Qihua Chen, Na Deng, Ke Lu, Qiao Liao, Xiaoyan Long, Deming Gou, Fangfang Bi, Jinxia Zhou

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 pooled it
3.2field-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

35 citing papers in PubMed, 2 syntheses or guidelines pooled it, 58 citations in OpenAlex.

  1. The Role of miRNAs in Parkinson's Disease: A Systematic Review.International journal of molecular sciences · 2025
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  14. Unlocking Parkinson's disease: the role of microRNAs in regulation, diagnosis, and therapy.Apoptosis : an international journal on programmed cell death · 2025
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  18. Extracellular Vesicle MicroRNAs as Predictive Biomarkers in Postoperative Delirium After Spine Surgery: Preliminary Study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2024
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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

8 authors at 3 institutions in 1 country.

Qihua Chen *Department of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China.
Na Deng *Department of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China.
Ke LuDepartment of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China.
Qiao LiaoDepartment of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China.
Xiaoyan LongDepartment of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China.
Deming GouShenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Carson International Cancer Center, Shenzhen University, Shenzhen, 518060, Guangdong, China.
Fangfang BiDepartment of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China.
Jinxia ZhouDepartment of Neurology, Xiangya Hospital, Central South University, Changsha, 41000, China. 405782@csu.edu.cn.
Central South University · CNXiangya Hospital Central South University · CNShenzhen University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Blood circulating microRNAs (miRNAs) are proposed to be promising biomarkers for many neurodegenerative disorders, including Parkinson's disease (PD). However, there is a lack of identified differentially expressed miRNAs in PD from different studies. The aim of this study was to evaluate miRNAs expression in PD. We measured plasma circulating miRNA expression in three independent sets with a total of 151 PD patients, 21 multiple system atrophy (MSA) patients and 138 healthy controls using high-throughput RT-PCR. We identified that elevated miR-133b and miR-221-3p discriminated early-stage PD from controls with 94.4% sensitivity and 91.1% specificity. Elevated miR-133b and miR-221-3p distinguished PD from controls with 84.8% sensitivity and 88.9% specificity. In addition, miR-4454 distinguished PD from MSA with 57.1% sensitivity and 82.6% specificity. Hence, elevated miR-133b and miR-221-3p potentially represent good biomarkers for early PD, and a combination of miR-133b, miR-221-3p and miR-4454 has the potential to serve as a non-invasive biomarker for PD diagnosis.

Indexed as

BiomarkersCase-Control StudiesEarly DiagnosisFemaleHumansLevodopaMaleMicroRNAsMiddle AgedParkinson DiseaseSensitivity and SpecificityBiomarkersLevodopaMicroRNAsMIR221, humanMIRN133 microRNA, human

Identifiers

PMID34315950
PMCPMC8316346
OpenAlexW3186641632

What OpenQuestion holds

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LicenceCC BY
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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.