Evidence map›Paper›PMID 34493657›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Whole-blood metabolomics of dementia patients reveal classes of disease-linked metabolites.

Takayuki Teruya, Yung-Ju Chen, Hiroshi Kondoh, Yasuhide Fukuji, Mitsuhiro Yanagida

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 67 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 3 pooled it
6.0field-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

67 citing papers in PubMed, 3 syntheses or guidelines pooled it, 108 citations in OpenAlex.

  1. Pooled it
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  3. Indoxyl Sulfate and Autism Spectrum Disorder: A Literature Review.International journal of molecular sciences · 2024
    Pooled it
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  10. Monocolonization withMicrobiology spectrum · 2026
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7 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Takayuki TeruyaG0 Cell Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan.ORCID 0000-0001-5960-7681
Yung-Ju ChenG0 Cell Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan.ORCID 0000-0003-1144-390X
Hiroshi KondohGeriatric Unit, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan.ORCID 0000-0002-1067-2244
Yasuhide FukujiNational Hospital Organization Ryukyu Hospital, Okinawa 904-1201, Japan.ORCID 0000-0002-5195-1178
Mitsuhiro YanagidaG0 Cell Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan; myanagid@gmail.com.
Okinawa Institute of Science and Technology Graduate University · JPKyoto University · JPNational Hospital Organization · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dementia is caused by factors that damage neurons. We quantified small molecular markers in whole blood of dementia patients, using nontargeted liquid chromatography-mass spectroscopy (LC-MS). Thirty-three metabolites, classified into five groups (A to E), differed significantly in dementia patients, compared with healthy elderly subjects. Seven A metabolites present in plasma, including quinolinic acid, kynurenine, and indoxyl-sulfate, increased. Possibly they act as neurotoxins in the central nervous system (CNS). The remaining 26 compounds (B to E) decreased, possibly causing a loss of support or protection of the brain in dementia. Six B metabolites, normally enriched in red blood cells (RBCs), all contain trimethylated ammonium moieties. These metabolites include ergothioneine and structurally related compounds that have scarcely been investigated as dementia markers, validating the examination of RBC metabolites. Ergothioneine, a potent antioxidant, is significantly decreased in various cognition-related disorders, such as mild cognitive impairment and frailty. C compounds also include some oxidoreductants and are normally abundant in RBCs (NADP

Indexed as

AgingMetabolomeAgedBiomarkersBrainCase-Control StudiesDementiaHumansNeuropsychological TestsSignal TransductionBiomarkersAlzheimer’s diseaseantioxidantsdementiaergothioneinetrimethyl-ammonium compounds

Identifiers

PMID34493657
PMCPMC8449400
OpenAlexW3196729086

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.