Evidence map›Paper›PMID 26365159›Full record

ArticleScientific reports2015

Comprehensive urinary metabolomic profiling and identification of potential noninvasive marker for idiopathic Parkinson's disease.

Hemi Luan, Liang-Feng Liu, Zhi Tang, Manwen Zhang, Ka-Kit Chua, Ju-Xian Song, Vincent C T Mok, Min Li, Zongwei Cai

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed, 3 pooled it
8.2field-weighted citation impact, top 2% 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

84 citing papers in PubMed, 3 syntheses or guidelines pooled it, 164 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  7. iScience · 2026
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  15. Review of Elevated Para-Cresol in Autism and Possible Impact on Symptoms.International journal of molecular sciences · 2025
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  19. Early diagnosis of Parkinson's disease: biomarker study.Frontiers in aging neuroscience · 2025
    Review
  20. Article

24 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

9 authors at 2 institutions in 2 countries.

Hemi LuanDepartment of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
Liang-Feng LiuSchool of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China.
Zhi TangDepartment of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
Manwen ZhangDepartment of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
Ka-Kit ChuaSchool of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China.
Ju-Xian SongSchool of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China.
Vincent C T MokDepartment of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.
Min LiSchool of Chinese Medicine, Hong Kong Baptist University, Hong Kong SAR, China.
Zongwei CaiDepartment of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China.
Hong Kong Baptist University · HKChinese University of Hong Kong · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Urine metabolic phenotyping has been associated with the development of Parkinson's disease (PD). However, few studies using a comprehensive metabolomics approach have investigated the correlation between changes in the urinary markers and the progression of clinical symptoms in PD. A comprehensive metabolomic study with robust quality control procedures was performed using gas chromatography - mass spectrometry (GC - MS) and liquid chromatography - mass spectrometry (LC - MS) to characterize the urinary metabolic phenotypes of idiopathic PD patients at three stages (early, middle and advanced) and normal control subjects, with the aim of discovering potential urinary metabolite markers for the diagnosis of idiopathic PD. Both GC-MS and LC-MS metabolic profiles of idiopathic PD patients differed significantly from those of normal control subjects. 18 differentially expressed metabolites were identified as constituting a unique metabolic marker associated with the progression of idiopathic PD. Related metabolic pathway variations were observed in branched chain amino acid metabolism, glycine derivation, steroid hormone biosynthesis, tryptophan metabolism, and phenylalanine metabolism. Comprehensive, successive metabolomic profiling revealed changes in the urinary markers associated with progression of idiopathic PD. This profiling relies on noninvasive sampling, and is complementary to existing clinical modalities.

Indexed as

MetabolomeMetabolomicsAdultAgedAged, 80 and overAmino AcidsBiomarkersCase-Control StudiesChromatography, High Pressure LiquidDiscriminant AnalysisDisease ProgressionFemaleGas Chromatography-Mass SpectrometryHumansLeast-Squares AnalysisMaleAmino AcidsBiomarkers

Identifiers

PMID26365159
PMCPMC4568456
OpenAlexW2419387266

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.