Randomised clinical study: oral aspirin 325 mg daily vs placebo alters gut microbial composition and bacterial taxa associated with colorectal cancer risk/Experiment 1
From BugSigDB
Reviewed Marked as Reviewed by Fatima on 2022/07/3
Curated date: 2022/05/27
Curator:
Revision editor(s):
Subjects
- Location of subjects
- United States of America
- 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
- Colon Hindgut,Large bowel,Posterior intestine,Colon,colon
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Colorectal carcinoma cancer of large bowel,cancer of large intestine,cancer of the large bowel,cancer of the large intestine,carcinoma of colorectum,carcinoma of large bowel,carcinoma of large intestine,carcinoma of the large bowel,carcinoma of the large intestine,colorectal (colon or rectal) cancer,colorectal cancer,colorectal carcinoma,colorectum carcinoma,CRC,large bowel cancer,large bowel carcinoma,large intestine cancer,large intestine carcinoma,Colorectal carcinoma
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- Placebo
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Aspirin
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- Experimental group took 325 mg daily aspirin over six weeks, with additional six weeks of washout
- Group 0 sample size Number of subjects in the control (unexposed) group
- 20
- Group 1 sample size Number of subjects in the case (exposed) group
- 30
- Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
- 3 months
Lab analysis
- Sequencing type
- 16S
- 16S variable region One or more hypervariable region(s) of the bacterial 16S gene
- V4
- 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).
- relative abundances
- Statistical test
- LEfSe
- 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
- LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool
- 2.0
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
Signature 2
Reviewed Marked as Reviewed by Fatima on 2022/07/3
Source: Table 3
Description: Linear discriminant analysis (LDA) effect size (LEfSe) in samples collected after treatment (week 6)
Abundance in Group 1: decreased abundance in
| NCBI | Quality Control | Links |
|---|---|---|
| Veillonella | ||
| Clostridium sp. DL-VIII |
Revision editor(s): Jeshudy, Peace Sandy, WikiWorks
