Evidence map›Paper›PMID 30867711›Full record

ArticleExperimental and therapeutic medicine2019

Differential composition of gut microbiota among healthy volunteers, morbidly obese patients and post-bariatric surgery patients.

Fu-Gang Wang, Ri-Xing Bai, Wen-Mao Yan, Ming Yan, Ling-Yue Dong, Mao-Min Song

Abstract read
In one paragraph

Article in Experimental and therapeutic medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

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

  1. Impact of bariatric surgery on gut microbiota in obese patients: A systematic review.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2025
    Pooled it
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  5. Human intestinal microbiome: Role in health and disease.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2024
    Review
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  19. Longitudinal changes of microbiome composition and microbial metabolomics after surgical weight loss in individuals with obesity.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2019
    Article
  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

6 authors.

Fu-Gang WangDepartment of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China.
Ri-Xing BaiDepartment of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China.
Wen-Mao YanDepartment of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China.
Ming YanDepartment of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China.
Ling-Yue DongDepartment of Cell Biology, Basic Medical College, Capital Medical University, Beijing 100069, P.R. China.
Mao-Min SongDepartment of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The modulation of the gut microbiota was recently deemed one of the mechanisms responsible for the excellent outcomes of bariatric surgery. However, to date, only few studies have assessed this, and they have high heterogeneity. In the present study, next-generation 16S ribosomal DNA amplicon sequencing was used to characterize the gut microbiota of healthy volunteers, as well as patients prior to and after sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB). Significant differences in α diversity, β diversity and species were identified between the different groups/time-points. The results demonstrated excellent outcomes of SG and RYGB. The β diversity was lower in healthy volunteers compared with that in morbidly obese patients with or without type 2 diabetes mellitus. At 3 months after SG, the α diversity was increased and the β diversity was decreased. The abundance of certain species changed significantly after SG and RYGB. It was also revealed that the abundance of certain microbes was significantly correlated with the body mass index, fasting blood glucose and glycosylated haemoglobin. It may be concluded that bariatric surgery may cause obvious alterations in the gut microbiota and compared with healthy volunteers and obese patients without bariatric surgery, the microbiota composition of post-bariatric surgery has unique characteristics. However, studies with a larger cohort and longer follow-up may be required to confirm these results.

Indexed as

bariatric surgerygut microbiotamorbid obesityRoux-en-Y gastric bypasssleeve gastrectomytype 2 diabetes mellitus

Identifiers

PMID30867711
PMCPMC6395995

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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.