Evidence map›Paper›PMID 40825820›Full record

ArticleScientific reports2025

Discovery of intestinal microorganisms that affect the improvement of muscle strength.

Ji-Seon Ahn, Hae-Mi Kim, Eui-Jeong Han, Seong-Tshool Hong, Hea-Jong Chung

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Review
  2. Review
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

5 authors.

Ji-Seon Ahn *Gwangju Center, Korea Basic Science Institute, Gwangju, 61751, Republic of Korea.
Hae-Mi Kim *Department of Biomedical Sciences, Jeonbuk National University Medical School, Jeonju, Jeollabuk-do, 54907, Republic of Korea.
Eui-Jeong Han *Gwangju Center, Korea Basic Science Institute, Gwangju, 61751, Republic of Korea.
Seong-Tshool HongDepartment of Biomedical Sciences, Jeonbuk National University Medical School, Jeonju, Jeollabuk-do, 54907, Republic of Korea. seonghong@jbnu.ac.kr.
Hea-Jong ChungGwangju Center, Korea Basic Science Institute, Gwangju, 61751, Republic of Korea. hjchung84@kbsi.re.kr.

Funding

the National Research Foundation (NRF) RS-2023-00224099
6 · The paper itself

Abstract

This study provides the first evidence related to the identification of microbial strains closely associated with muscle strength enhancement, independent of the host's genetic background. Fecal transplants from humans into mice revealed a significant impact of gut bacteria on muscle strength, with some mice experiencing increases, while others showed no change or decreases. Interestingly, analysis of the fecal and gastrointestinal tract bacteria from each mouse classified by the degree of muscle strength revealed significant differences based on muscle strength. Furthermore, a more diverse microbial community was observed in the gastrointestinal tract compared to the feces. Further investigation identified two bacterial species, Lactobacillus johnsonii (L. johnsonii) and Limosilactobacillus reuteri (L. reuteri), that are related to improved muscle strength. Indeed, we confirmed that the supplementation with these bacteria in aged mice significantly enhanced their muscle strength by increasing the mRNA expression levels of follistatin (FST) and insulin-like growth factor-1 (IGF1) in muscle tissue. Overall, this study provides the first evidence that specific gut bacteria can directly improve muscle strength and introduces a novel approach to studying the gut microbiome's influence on complex traits.

Indexed as

Gastrointestinal MicrobiomeMuscle StrengthAnimalsFecal Microbiota TransplantationFecesHumansInsulin-Like Growth Factor ILactobacillusLimosilactobacillus reuteriMaleMiceMice, Inbred C57BLMuscle, SkeletalInsulin-Like Growth Factor IComplex traitsFecal microbiota transplantationGut microbiomeLactobacillus johnsoniiLimosilactobacillus reuteriMuscle strength

Identifiers

PMID40825820
PMCPMC12361556

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.