Gut microbiota shifts in patients with gastric cancer in perioperative period
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Quality control
- Retracted paper
- Contamination issues suspected
- Batch effect issues suspected
- Uncontrolled confounding suspected
- Results are suspect (various reasons)
- Tags applied
Experiment 1
Curated date: 2021/01/10
Curator: WikiWorks
Revision editor(s): Rimsha, Claregrieve1, WikiWorks, Victoria
Subjects
- Location of subjects
- China
- Host species Species from which microbiome was sampled. Contact us to have more species added.
- Homo sapiens
- Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
- Feces Cow dung,Cow pat,Droppings,Dung,Excrement,Excreta,Faeces,Fecal material,Fecal matter,Fewmet,Frass,Guano,Matières fécales@fr,Merde@fr,Ordure,Partie de la merde@fr,Piece of shit,Porción de mierda@es,Portion of dung,Portion of excrement,Portion of faeces,Portion of fecal material,Portion of fecal matter,Portion of feces,Portion of guano,Portion of scat,Portionem cacas,Scat,Spoor,Spraint,Stool,Teil der fäkalien@de,Feces,feces
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Gastric cancer Ca body - stomach,ca greater curvature of stomach,Ca lesser curvature - stomach,cancer of stomach,gastric cancer,gastric cancer, intestinal,gastric neoplasm,malignant gastric neoplasm,malignant gastric tumor,malignant neoplasm of body of stomach,malignant neoplasm of lesser curve of stomach,malignant neoplasm of stomach,malignant neoplasm of the stomach,malignant stomach neoplasm,malignant tumor of body of stomach,malignant tumor of greater curve of stomach,malignant tumor of lesser curve of stomach,malignant tumor of stomach,malignant tumor of the stomach,stomach cancer,Gastric cancer
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- controls
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- gastric cancer
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- gastric cancer patients
- Group 0 sample size Number of subjects in the control (unexposed) group
- 22
- Group 1 sample size Number of subjects in the case (exposed) group
- 20
- Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
- 1 month
Lab analysis
- Sequencing type
- 16S
- 16S variable region One or more hypervariable region(s) of the bacterial 16S gene
- Not specified
- Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance
- Illumina
Statistical Analysis
- Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).
- raw counts
- Statistical test
- T-Test
- Significance threshold p-value or FDR threshold used for differential abundance testing (if any)
- 0.05
- MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
- No
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- decreased
- Chao1 Abundance-based estimator of species richness
- increased
- Simpson Estimator of species richness and species evenness: more weight on species evenness
- unchanged
- Richness Number of species
- increased
Signature 1
Source: Figure 2, Sup. figure 2A, Sup. figure 2B
Description: Comparision of gut microbiota between Gastric Cancer patients and Healthy Controls
Abundance in Group 1: increased abundance in gastric cancer
NCBI | Quality Control | Links |
---|---|---|
Pseudomonadota | ||
Enterobacteriaceae | ||
Escherichia | ||
Shigella | ||
Clostridium | ||
Veillonella | ||
Gammaproteobacteria | ||
Enterobacterales |
Revision editor(s): WikiWorks
Signature 2
Source: Figure 2, Sup. figure 2A, Sup. figure 2B
Description: Comparision of gut microbiota between Gastric Cancer patients and Healthy Controls
Abundance in Group 1: decreased abundance in gastric cancer
NCBI | Quality Control | Links |
---|---|---|
Bacteroidota | ||
Bacteroidaceae | ||
Bacteroides | ||
Bacteroidia | ||
Bacteroidales |
Revision editor(s): WikiWorks
Experiment 2
Subjects
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- healthy gastric cancer (post surgery)
- Group 0 sample size Number of subjects in the control (unexposed) group
- 6
Lab analysis
Statistical Analysis
- Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).
- relative abundances
- Statistical test
- LEfSe
- LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool
- 3.5
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
- Chao1 Abundance-based estimator of species richness
- unchanged
- Simpson Estimator of species richness and species evenness: more weight on species evenness
- unchanged
- Richness Number of species
- unchanged
Signature 1
Source: Figure 5
Description: LEfSe analysis of enriched bacterial taxa in gut microbiota between gastric cancer group and healthy gastric cancer group
Abundance in Group 1: increased abundance in gastric cancer
NCBI | Quality Control | Links |
---|---|---|
Synergistota | ||
Lachnospiraceae | ||
Klebsiella |
Revision editor(s): WikiWorks
Signature 2
Source: Figure 5
Description: LEfSe analysis of enriched bacterial taxa in gut microbiota between gastric cancer group and healthy gastric cancer group
Abundance in Group 1: decreased abundance in gastric cancer
Revision editor(s): WikiWorks