Sex effects in the association between airway microbiome and asthma
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Study information
-
Quality control
- Retracted paper
- Contamination issues suspected
- Batch effect issues suspected
- Uncontrolled confounding suspected
- Results are suspect (various reasons)
- Tags applied
study design
Citation
PMID PubMed identifier for scientific articles.
DOI Digital object identifier for electronic documents.
Authors
Chen R, Wang L, Koch T, Curtis V, Yin-DeClue H, Handley SA, Shan L, Holtzman MJ, Castro M, Wang L
Journal
Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology
Year
2020
BACKGROUND: Sex differences exist in asthma susceptibility and severity. Accumulating evidence has linked airway microbiome dysbiosis to asthma, and airway microbial communities have been found to differ by sex. However, whether sex modifies the link between airway microbiome and asthma has not been investigated. OBJECTIVE: To evaluate sex effects in the association between airway microbiome and asthma. METHODS: We analyzed induced sputum samples from 47 subjects (n = 23 patients with asthma and n = 24 normal controls) using 16S ribosomal RNA gene sequencing methods. The bacterial composition was analyzed for sex differences. Bacterial associations with asthma were assessed for each sex at the core taxa and genus levels. RESULTS: The microbiome in induced sputum differed in women vs men at the community level. A total of 5 core bacterial taxa were found in all samples. No sex-specific core taxa were detected. The most abundant core taxon, Streptococcus salivarius, was significantly enriched in women than in men (P = .02). Within each sex, individuals with relatively lower abundance of S salivarius were more likely to have asthma (P = .006). For both sexes, increased Lactobacillus species were found in sputum samples of patients with patients compared with normal controls (adjusted P = .01). Haemophilus species were associated with asthma in men and not in women. CONCLUSION: The airway microbiome differed by sex, and sex effects exist in the association of airway microbial markers and asthma. Future airway microbiome studies may yield better resolution if the context of specific sex is considered. The airway microbiome is a potential mechanism driving sex differences in asthma.
Experiment 1
Reviewed Marked as Reviewed by Claregrieve1 on 2022/08/31
Curated date: 2021/12/11
Curator: Joyessa
Revision editor(s): WikiWorks, Claregrieve1, Joyessa, Peace Sandy
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
- Sputum Expectoration,Sputum,sputum
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Asthma Airway hyperreactivity,asthma,Asthma (disorder),Asthma NOS,Asthma NOS (disorder),ASTHMA NOS W (AC) EXAC,Asthma unspecified,Asthma unspecified (disorder),Asthma, Bronchial,Asthma, unspecified,Asthma, unspecified type, with acute exacerbation,Asthma, unspecified type, without mention of status asthmaticus,Asthmas,Asthmatic,BHR - Bronchial hyperreactivity,Bronchial asthma,Bronchial Hyperreactivities,Bronchial hyperreactivity,bronchial hyperreactivity,Bronchial hyperresponsiveness,Bronchial hypersensitivity,chronic obstructive asthma,chronic obstructive asthma with acute exacerbation,chronic obstructive asthma with status asthmaticus,DUST PNEUMONOPATHY NEC,Exercise induced asthma,exercise induced asthma,Exercise-induced asthma,exercise-induced asthma,Exercise-induced asthma (disorder),Hyperreactive airway disease,Hyperreactive airways disease,Hyperreactivities, Bronchial,Hyperreactivity, Bronchial,Other forms of asthma,Pneumonopathy due to inhalation of other dust,Pneumopathy due to inhalation of other dust,Pneumopathy due to inhalation of other dust (disorder),Pneumopathy due to inhalation of other dust NOS,Pneumopathy due to inhalation of other dust NOS (disorder),Asthma
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- Female
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Male
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- Male participants
- Group 0 sample size Number of subjects in the control (unexposed) group
- 32
- Group 1 sample size Number of subjects in the case (exposed) group
- 15
- 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
- V1-V2
- 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
- Mann-Whitney (Wilcoxon)
- 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)?
- Yes
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
Signature 1
Reviewed Marked as Reviewed by Claregrieve1 on 2022/08/31
Source: Figure 1, Figure 2
Description: Differential microbial abundance between men and women
Abundance in Group 1: decreased abundance in Male
| NCBI | Quality Control | Links |
|---|---|---|
| Actinomycetota | ||
| Bacillota | ||
| Streptococcus salivarius |
Revision editor(s): Joyessa, Claregrieve1
Signature 2
Reviewed Marked as Reviewed by Claregrieve1 on 2022/08/31
Source: Figure 1
Description: Differential microbial abundance between men and women
Abundance in Group 1: increased abundance in Male
| NCBI | Quality Control | Links |
|---|---|---|
| Bacteroidota |
Revision editor(s): Joyessa, Claregrieve1
Experiment 2
Reviewed Marked as Reviewed by Claregrieve1 on 2022/08/31
Curated date: 2022/08/31
Curator: Claregrieve1
Revision editor(s): Claregrieve1, WikiWorks, Victoria
Differences from previous experiment shown
Subjects
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- Female normal controls
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Female participants with asthma
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- Females participants with asthma
- Group 0 sample size Number of subjects in the control (unexposed) group
- 17
Lab analysis
Statistical Analysis
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
Signature 1
Reviewed Marked as Reviewed by Lwaldron on 2022/10/20
Source: Figure 2b
Description: Differential microbial abundance between female participants with asthma and female normal controls
Abundance in Group 1: decreased abundance in Female participants with asthma
| NCBI | Quality Control | Links |
|---|---|---|
| Streptococcus salivarius |
Revision editor(s): Claregrieve1
Signature 3
Reviewed Marked as Reviewed by Claregrieve1 on 2022/08/31
Source: Figure 3b
Description: Differential microbial abundance between female participants with asthma and female normal controls
Abundance in Group 1: increased abundance in Female participants with asthma
| NCBI | Quality Control | Links |
|---|---|---|
| Lactobacillus |
Revision editor(s): Claregrieve1
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