Evidence map›Paper›PMID 40926017›Full record

ArticleCellular & molecular immunology2025

Gut-derived indole propionic acid alleviates liver fibrosis by targeting profibrogenic macrophages via the gut‒liver axis.

Yuanyuan Luo, Yarong Hao, Chunyan Sun, Zhi Lu, Hao Wang, Yuhan Lin, Yaping Guan, Lingyan Cai, Chenhong Ding, Binbin Li and 4 more

Abstract read
In one paragraph

Article in Cellular & molecular immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Gut microbes · 2026
    Article
  2. Article
  3. Article
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  5. Review
  6. Article
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  14. DNA-programmed cell assembly: from cells, tissues to organoids.Frontiers in bioengineering and biotechnology · 2025
    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

14 authors.

Yuanyuan Luo *Department of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Yarong Hao *Department of Gastroenterology, Shanghai Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
Chunyan Sun *Department of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Zhi Lu *Department of Psychological and Cognitive Sciences & Institute for Brain and Cognitive Sciences, Tsinghua University, Beijing, 100084, China.ORCID 0000-0003-3739-8756
Hao Wang *Department of Gastroenterology, Shanghai Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
Yuhan LinQueen Marry university, Nanchang University, Nanchang, 330006, China.
Yaping GuanDepartment of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Lingyan CaiDepartment of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Chenhong DingDepartment of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Binbin LiDepartment of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Fei ChenDepartment of Gastroenterology, Shanghai Changzheng Hospital, Navy Medical University, Shanghai, 200003, China.
Yiting LuDepartment of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
Yong LinDepartment of Gastroenterology, Shanghai Changzheng Hospital, Navy Medical University, Shanghai, 200003, China. linyongmd@163.com.
Xin ZengDepartment of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China. zengxinmd1978@163.com.ORCID 0000-0002-7562-9909

Funding

National Natural Science Foundation of China (National Science Foundation of China) 82100608National Natural Science Foundation of China (National Science Foundation of China) 82270636National Natural Science Foundation of China (National Science Foundation of China) 82300607
6 · The paper itself

Abstract

Gut-derived metabolites are essential for liver fibrogenesis. The aim of this study was to determine the alteration of indole-3-propionic acid (IPA), a crucial tryptophan metabolite, in liver fibrosis and delineate the roles of enterogenic IPA in fibrogenesis. In the present study, metabolomics assays focused on tryptophan metabolism were applied to explore the decreased levels of IPA in the feces and serum of cirrhotic patients, as well as in the feces and portal vein serum of fibrotic mice. Oral IPA administration exerted strong antifibrotic effects with favorable biosafety in three fibrotic models via multicellular modulation. Multiplex immunohistochemical staining and DAOSLIMIT imaging demonstrated that gut-derived IPA was directly captured by hepatic macrophages. Macrophage-specific AhR knockout blocked the antifibrotic effect of IPA, while the therapeutic efficacy was maintained in mice with HSC- or hepatocyte-specific AhR depletion. Furthermore, IPA governed macrophage recruitment, S100A8/A9

Indexed as

IndolesLiverLiver CirrhosisMacrophagesPropionatesAnimalsDisease Models, AnimalHumansMaleMiceMice, Inbred C57BLReceptors, Aryl HydrocarbonSignal Transductionindolepropionic acidIndolesPropionatesReceptors, Aryl HydrocarbonGut‒liver axisIndole-3-propionic acidLiver fibrosisMacrophageMetabolomics

Identifiers

PMID40926017
PMCPMC12575719

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.