Evidence map›Paper›PMID 31117957›Full record

ArticleBMC neuroscience2019

Iron deposition in Parkinson's disease by quantitative susceptibility mapping.

Qiqi Chen, Yiting Chen, Yue Zhang, Furu Wang, Hongchang Yu, Caiyuan Zhang, Zhen Jiang, Weifeng Luo

Open access · goldAbstract read
In one paragraph

Article in BMC neuroscience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 3 pooled it
10.2field-weighted citation impact, top 1% 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

71 citing papers in PubMed, 3 syntheses or guidelines pooled it, 123 citations in OpenAlex.

  1. Pooled it
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  7. Non-canonical cell death in neurodegeneration: emerging mechanisms and therapeutic Frontiers.Apoptosis : an international journal on programmed cell death · 2026
    Review
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  9. Diagnostic Potential of Macromolecular Proton Fraction Mapping Combined with Quantitative Susceptibility Mapping as a Subcortical Biomarker for Parkinson's Disease.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2026
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11 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

8 authors at 1 institution in 1 country.

Qiqi ChenDepartment of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou, China.
Yiting ChenDepartment of Neurology, the Second Affiliated Hospital of Soochow University, Suzhou, China.
Yue ZhangDepartment of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou, China.
Furu WangDepartment of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou, China.
Hongchang YuDepartment of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou, China.
Caiyuan ZhangDepartment of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou, China.
Zhen JiangDepartment of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou, China. j102@163.com.ORCID 0000-0002-2050-0681
Weifeng LuoDepartment of Neurology, the Second Affiliated Hospital of Soochow University, Suzhou, China. lwfwxx@126.com.
Soochow University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients with Parkinson's disease (PD) have elevated levels of brain iron, especially in the nigrostriatal dopaminergic system. The purpose of this study was to evaluate the iron deposition in the substantia nigra (SN) and other deep gray matter nuclei of PD patients using quantitative susceptibility mapping (QSM) and its clinical relationship, and to explore whether there is a gradient of iron deposition pattern in globus pallidus (GP)-fascicula nigrale (FN)-SN pathway.

methodsThirty-three PD patients and 26 age- and sex-matched healthy volunteers (HVs) were included in this study. Subjects underwent brain MRI and constructed QSM data. The differences in iron accumulation in the deep gray matter nuclei of the subjects were compared, including the PD group and the control group, the early-stage PD (EPD) group and the late-stage PD (LPD) group. The iron deposition pattern of the GP-FN-SN pathway was analyzed.

resultsThe PD group showed increased susceptibility values in the FN, substantia nigra pars compacta (SNc), internal globus pallidus (GPi), red nucleus (RN), putamen and caudate nucleus compared with the HV group (P < 0.05). In both PD and HV group, iron deposition along the GP-FN-SN pathway did not show an increasing gradient pattern. The SNc, substantia nigra pars reticulata (SNr) and RN showed significantly increased susceptibility values in the LPD patients compared with the EPD patients.

conclusionPD is closely related to iron deposition in the SNc. The condition of PD patients is related to the SNc and the SNr. There is not an increasing iron deposition gradient along the GP-FN-SN pathway. The source and mechanism of iron deposition in the SN need to be further explored, as does the relationship between the iron deposition in the RN and PD.

Indexed as

Brain MappingCase-Control StudiesFemaleGlobus PallidusGray MatterHumansIronMagnetic Resonance ImagingMaleMiddle AgedNeural PathwaysNeuroimagingParkinson DiseaseSeverity of Illness IndexSubstantia NigraIronIron depositionParkinson’s diseaseQuantitative susceptibility mapping

Identifiers

PMID31117957
PMCPMC6532252
OpenAlexW2947966619

What OpenQuestion holds

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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 OpenQuestion graph.