Evidence map›Paper›PMID 32295884›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Frailty markers comprise blood metabolites involved in antioxidation, cognition, and mobility.

Masahiro Kameda, Takayuki Teruya, Mitsuhiro Yanagida, Hiroshi Kondoh

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
112citing papers in PubMed, 1 pooled it
7.8field-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

112 citing papers in PubMed, 1 synthesis or guideline pooled it, 156 citations in OpenAlex.

  1. Pooled it
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  10. Is Ergothioneine an Important Source of Plasma TrimethylamineAntioxidants (Basel, Switzerland) · 2026
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52 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Masahiro KamedaGeriatric Unit, Graduate School of Medicine, Kyoto University, Sakyo-ku, 606-8507 Kyoto, Japan.ORCID 0000-0003-2707-6753
Takayuki TeruyaG0 Cell Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, 904-0495 Okinawa, Japan.ORCID 0000-0001-5960-7681
Mitsuhiro YanagidaG0 Cell Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, 904-0495 Okinawa, Japan myanagid@gmail.com hkondoh@kuhp.kyoto-u.ac.jp.
Hiroshi KondohGeriatric Unit, Graduate School of Medicine, Kyoto University, Sakyo-ku, 606-8507 Kyoto, Japan; myanagid@gmail.com hkondoh@kuhp.kyoto-u.ac.jp.ORCID 0000-0002-1067-2244
Kyoto University · JPOkinawa Institute of Science and Technology Graduate University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As human society ages globally, age-related disorders are becoming increasingly common. Due to decreasing physiological reserves and increasing organ system dysfunction associated with age, frailty affects many elderly people, compromising their ability to cope with acute stressors. Frail elderly people commonly manifest complex clinical symptoms, including cognitive dysfunction, hypomobility, and impaired daily activity, the metabolic basis of which remains poorly understood. We applied untargeted, comprehensive LC-MS metabolomic analysis to human blood from 19 frail and nonfrail elderly patients who were clinically evaluated using the Edmonton Frail Scale, the MoCA-J for cognition, and the TUG for mobility. Among 131 metabolites assayed, we identified 22 markers for frailty, cognition, and hypomobility, most of which were abundant in blood. Frailty markers included 5 of 6 markers specifically related to cognition and 6 of 12 markers associated with hypomobility. These overlapping sets of markers included metabolites related to antioxidation, muscle or nitrogen metabolism, and amino acids, most of which are decreased in frail elderly people. Five frailty-related metabolites that decreased-1,5-anhydroglucitol, acetyl-carnosine, ophthalmic acid, leucine, and isoleucine-have been previously reported as markers of aging, providing a metabolic link between human aging and frailty. Our findings clearly indicate that metabolite profiles efficiently distinguish frailty from nonfrailty. Importantly, the antioxidant ergothioneine, which decreases in frailty, is neuroprotective. Oxidative stress resulting from diminished antioxidant levels could be a key vulnerability for the pathogenesis of frailty, exacerbating illnesses related to human aging.

Indexed as

Mobility LimitationAgedAged, 80 and overAntioxidantsBiomarkersCognitionFemaleFrailtyHumansMaleAntioxidantsBiomarkersaging markerantioxidantscognitive impairmentfrailtymetabolomics

Identifiers

PMID32295884
PMCPMC7196897
OpenAlexW3016938917

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

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.