Evidence map›Paper›PMID 32143645›Full record

ArticleBMC gastroenterology2020

Intestinal flora imbalance affects bile acid metabolism and is associated with gallstone formation.

Qiang Wang, Chenjun Hao, Wenchao Yao, Defu Zhu, Haifeng Lu, Long Li, Biao Ma, Bei Sun, Dongbo Xue, Weihui Zhang

Open access · goldAbstract read
In one paragraph

Article in BMC gastroenterology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 6% 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

68 citing papers in PubMed, 2 syntheses or guidelines pooled it, 109 citations in OpenAlex.

  1. Pooled it
  2. Intestinal microbiota and biliary system diseases.Frontiers in cellular and infection microbiology · 2024
    Pooled it
  3. Review
  4. Review
  5. Abdominal Pain After Bariatric Surgery and the Role of the Gut: A Review.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2026
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. Article

8 more citing papers are in PubMed but not listed here.

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 at 1 institution in 1 country.

Qiang WangDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Chenjun HaoDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Wenchao YaoDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Defu ZhuDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Haifeng LuDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Long LiDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Biao MaDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Bei SunDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Dongbo XueDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China. xuedongbo@hrbmu.edu.cn.ORCID http://orcid.org/0000-0001-9012-4805
Weihui ZhangDepartment of General Surgery, Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Youzheng Street 23, Harbin, 150001, China.
Harbin Medical University · CN

Funding

National Natural Science Foundation of China 81770634
6 · The paper itself

Abstract

backgroundThe gut microbiota participates in the metabolism of substances and energy, promotes the development and maturation of the immune system, forms the mucosal barrier, and protects the host from pathogen attacks. Although the pathogenesis of cholesterol gallstones is still not clear, studies have suggested that gut microbiota dysbiosis plays an important role in their formation.

methodsMicrobial DNA from faeces of normal control patients and those of patients with calculi was subjected to 16S rRNA gene sequencing to detect gene expression changes in intestinal microbes. ELISA kits were used to measure free bile acids, secondary bile acids and coprostanol according to the manufacturer's instructions. The relationship between flora and their metabolites was then analysed.

resultsIn the gallstone group, the diversity of intestinal bacteria and the abundances of certain phylogroups were significantly decreased (p < 0.05), especially Firmicutes (p < 0.05), the largest phylum represented by the gut microbiota. This study found an increase in free bile acids (p < 0.001) and secondary bile acids (p < 0.01) in the enterohepatic circulation. Bile salt hydrolase activity was not related to the abundances of BSH-active bacteria. 7a-dehydroxylating gut bacteria were significantly increased (p < 0.01), whereas cholesterol-lowering bacteria were significantly reduced (p < 0.05). The Ruminococcus gnavus group could be used as a biomarker to distinguish the gallstone group from the control group.

conclusionWe conclude that intestinal flora imbalance affects bile acid and cholesterol metabolism and is associated with gallstone formation.

Indexed as

Gastrointestinal MicrobiomeAdultBacteriaBile Acids and SaltsCholesterolDNA, BacterialDysbiosisEnterohepatic CirculationFecesFemaleGallstonesGene ExpressionHumansMaleMiddle AgedRNA, Ribosomal, 16SBile Acids and SaltsCholesterolDNA, BacterialRNA, Ribosomal, 16S16S rRNA gene sequencingBile acidBSHGallstoneGut microbiota

Identifiers

PMID32143645
PMCPMC7060658
OpenAlexW3011078704

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.