Evidence map›Paper›PMID 36539569›Full record

ArticleOncogene2023

Altered gut microbiome composition by appendectomy contributes to colorectal cancer.

Feiyu Shi, Gaixia Liu, Yufeng Lin, Cosmos Liutao Guo, Jing Han, Eagle S H Chu, Chengxin Shi, Yaguang Li, Haowei Zhang, Chenhao Hu and 9 more

Open access · hybridAbstract read
In one paragraph

Article in Oncogene, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 3 pooled it
5.1field-weighted citation impact, top 3% 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

46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 61 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Article
  7. Article
  8. Relationship between the appendix and ulcerative colitis: A new discovery.World journal of gastrointestinal endoscopy · 2026
    Review
  9. Article
  10. Review
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  17. Article
  18. Microorganisms · 2025
    Article
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  20. 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

19 authors at 2 institutions in 2 countries.

Feiyu Shi *Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Gaixia Liu *Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Yufeng Lin *State Key Laboratory of Digestive Disease, Institute of Digestive Disease and Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR, China.
Cosmos Liutao Guo *State Key Laboratory of Digestive Disease, Institute of Digestive Disease and Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR, China.
Jing HanCenter for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiao tong University, Xi'an, Shaanxi, China.
Eagle S H ChuState Key Laboratory of Digestive Disease, Institute of Digestive Disease and Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR, China.
Chengxin ShiDepartment of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Yaguang LiDepartment of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Haowei ZhangDepartment of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Chenhao HuDepartment of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Ruihan LiuCenter for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiao tong University, Xi'an, Shaanxi, China.
Shuixiang HeDepartment of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.ORCID 0000-0002-4832-1896
Gang GuoCenter for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiao tong University, Xi'an, Shaanxi, China.
Yinnan ChenCenter for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiao tong University, Xi'an, Shaanxi, China.
Xiang ZhangState Key Laboratory of Digestive Disease, Institute of Digestive Disease and Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR, China.
Olabisi Oluwabukola CokerState Key Laboratory of Digestive Disease, Institute of Digestive Disease and Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR, China.
Sunny Hei WongState Key Laboratory of Digestive Disease, Institute of Digestive Disease and Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Hong Kong SAR, China.
Jun YuCenter for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiao tong University, Xi'an, Shaanxi, China. junyu@cuhk.edu.hk.ORCID 0000-0001-5008-2153
Junjun SheDepartment of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China. junjunshe1975@sina.com.ORCID 0000-0001-5104-663X
First Affiliated Hospital of Xi'an Jiaotong University · CNChinese University of Hong Kong · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Appendectomy impacts the homeostasis of gut microbiome in patients. We aimed to study the role of appendectomy in colorectal cancer (CRC) risk through causing gut microbial dysbiosis. Population-based longitudinal study (cohort 1, n = 129,155) showed a 73.0% increase in CRC risk among appendectomy cases throughout 20 years follow-up (Adjusted sub-distribution hazard ratio (SHR) 1.73, 95% CI 1.49-2.01, P < 0.001). Shotgun metagenomic sequencing was performed on fecal samples from cohort 2 (n = 314). Gut microbial dysbiosis in appendectomy subjects was observed with significant enrichment of 7 CRC-promoting bacteria (Bacteroides vulgatus, Bacteroides fragilis, Veillonella dispar, Prevotella ruminicola, Prevotella fucsa, Prevotella dentalis, Prevotella denticola) and depletion of 5 beneficial commensals (Blautia sp YL58, Enterococcus hirae, Lachnospiraceae bacterium Choco86, Collinsella aerofaciens, Blautia sp SC05B48). Microbial network analysis showed increased correlation strengths among enriched bacteria and their enriched oncogenic pathways in appendectomy subjects compared to controls. Of which, B. fragilis was the centrality in the network of the enriched bacteria. We further confirmed that appendectomy promoted colorectal tumorigenesis in mice by causing gut microbial dysbiosis and impaired intestinal barrier function. Collectively, this study revealed appendectomy-induced microbial dysbiosis characterized by enriched CRC-promoting bacteria and depleted beneficial commensals, signifying that the gut microbiome may play a crucial role in CRC development induced by appendectomy.

Indexed as

Colorectal NeoplasmsGastrointestinal MicrobiomeAnimalsAppendectomyDysbiosisLongitudinal StudiesMice

Identifiers

PMID36539569
PMCPMC9918431
OpenAlexW4312129058

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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.