Evidence map›Paper›PMID 33436066›Full record

ArticleGut pathogens2021

Bacteroides, butyric acid and t10,c12-CLA changes in colorectal adenomatous polyp patients.

Ciyan Chen, Min Niu, Junxi Pan, Na Du, Shumin Liu, Huanqin Li, Qiuyue He, Jian Mao, Yong Duan, Yan Du

Abstract read
In one paragraph

Article in Gut pathogens, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
–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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  7. Effects ofFrontiers in nutrition · 2025
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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

10 authors.

Ciyan ChenDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Min NiuDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Junxi PanDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Na DuDepartment of Clinical Laboratory, the No. 1 Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming, 650032, China.
Shumin LiuDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Huanqin LiDepartment of Clinical Laboratory, the No. 1 Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming, 650032, China.
Qiuyue HeDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Jian MaoDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Yong DuanDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China.
Yan DuDepartment of Clinical Laboratory, the First Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Wuhua District, Kunming, 650032, China. duyan_m@139.com.ORCID http://orcid.org/0000-0003-2962-6907

Funding

Joint special fund for applied basic research in Yunnan Province 2017FE467 (-173)Joint special fund for applied basic research in Yunnan Province 2019FE001 (-060)National Natural Science Foundation of China 81960382Natural Science Foundation of Yunnan Province 2018FA043
6 · The paper itself

Abstract

backgroundColorectal adenomatous polyps (CAPs) are considered precancerous lesions of colorectal cancer (CRC). The gut microbiota participates in the process of digestion and, in the process, produces metabolites, mainly short-chain fatty acids (SCFAs), secondary bile acids and conjugated linoleic acid (CLA). This study aimed to investigate the gut microbiota constituents and metabolites in the faeces of CAP patients to identify microbiota or metabolites that can be used as sensitive biological predictors and to provide a theoretical basis for the clinical treatment of CAPs.

methods16S rRNA sequence analysis was used to detect microbial changes in the faeces of CAP patients. qPCR analysis was used to evaluate the ability of the microbiota to produce metabolites, and the contents of metabolites in faeces were detected by ion chromatography and ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).

resultsBased on the detection of the gut microbiota, patients with CAPs had increased abundances of Bacteroides and Citrobacter, and the abundances of Weissella and Lactobacillus were decreased. We also explored gene expression, and the abundance of butyrate-producing bacterial genes was significantly increased in the faeces of CAP patients, but those of secondary bile acid-producing and CLA-producing bacterial genes showed no differences in faecal samples. The acetic acid and butyric acid contents were increased in the faeces of the CAP group, and the healthy control group had higher t10,c12-CLA contents.

conclusionThe gut microbiota analysis results, assessed in faeces, showed that Bacteroides and Citrobacter were positively correlated with CAPs, which indicated that changes in specific genera might be detrimental to intestinal health. In addition, t10,c12-CLA played an important role in protecting the intestine.

Indexed as

16S rRNABile acidCLAColorectal adenomatous polypsMicrobiomeSCFA

Identifiers

PMID33436066
PMCPMC7805033

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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.