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Disruptions in oral and nasal microbiota in biomass and tobacco smoke associated chronic obstructive pulmonary disease

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Abstract

Chronic exposures to tobacco and biomass smoke are the most prevalent risk factors for COPD development. Although microbial diversity in tobacco smoke-associated COPD (TSCOPD) has been investigated, microbiota in biomass smoke-associated COPD (BMSCOPD) is still unexplored. We aimed to compare the nasal and oral microbiota between healthy, TSCOPD, and BMSCOPD subjects from a rural population in India. Nasal swabs and oral washings were collected from healthy (n = 10), TSCOPD (n = 11), and BMSCOPD (n = 10) subjects. The downstream analysis was performed using QIIME pipeline (v1.9). In nasal and oral microbiota no overall differences were noted, but there were key taxa that had differential abundance in either Healthy vs COPD and/or TSCOPD vs. BMSCOPD. Genera such as Actinomyces, Actinobacillus, Megasphaera, Selenomonas, and Corynebacterium were significantly higher in COPD subjects. This study suggests that microbial community undergoes dysbiosis which may further contribute to the progression of disease. Thus, it is important to identify etiological agents for such a polymicrobial alterations which contribute highly to the disease manifestation.

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Data availability

Bacterial 16S rRNA gene sequences generated in this study are accessible in the NCBI SRA database under the study accession number SUB2028453, with the BioSample IDs SAMN05959540-SAMN05959600.

Abbreviations

ALDEx2:

ANOVA-like differential expression tool for compositional data

ANNOVA:

Analysis of variance

BMSCOPD:

Biomass smoke-associated chronic obstructive pulmonary disease

BMI:

Body mass index

COPD:

Chronic obstructive pulmonary disease

DNA:

Deoxyribose nucleic acid

FEV1:

Forced expiratory volume in one second

FVC:

Forced vital capacity

GOLD:

Global initiative for chronic obstructive lung disease

NMDS:

Nonmetric multidimensional scaling

OUT:

Operational taxonomic unit

PCR:

Polymerase chain reaction

PEAR:

Paired-End reAd merger

QIIME:

Quantitative insights into microbial ecology

rRNA:

Ribosomal ribo nucleic acid

STAMP:

Statistical analysis of taxonomic and functional profiles

TSCOPD:

Tobacco smoke-associated chronic obstructive pulmonary disease

UCLUST:

Algorithm divides a set of sequences into clusters

V4:

Variable region four of 16S rRNA gene

References

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Acknowledgements

We thank Director King Edward Memorial Hospital Research Centre, (KEMHRC) Pune for allowing us to use all laboratory facilities at KEMHRC, Vadu for processing of study samples. Thanks, National Centre for Microbial Resource, National Centre for Cell Science Pune for providing the support for sequencing the study samples. We also like to thank ethics committee of KEMHRC for giving approval for the study and field staff of Vadu Health and Demographic Surveillance System for their support in the field work. In the end, we would like to thank all study subjects for giving their written consent to participate in this study.

Funding

This work is supported by Vadu Rural Health Program, KEM Hospital Research Centre, Pune in collaboration with National Centre for Microbial Resource, National Centre for Cell Science, Pune and Chest Research Foundation, Pune.

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Authors and Affiliations

Authors

Contributions

DA, SJ, SS conception, and design; DA data and sample collection; DA and AG performed all the experiments; DA, DD, SK analyzed data and wrote the manuscript; BB, SS, SJ, YS reviewed the manuscript; all authors finally approved the manuscript.

Corresponding author

Correspondence to Dhiraj M. Agarwal.

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Conflict of interest

The authors declare no conflict of interest. None of the authors has a financial relationship with a commercial entity that has an interest in the subject of this manuscript.

Ethical approval

Ethical approval for the study was obtained from the ethics committee of KEM Hospital Research Centre, Pune before starting the study. Written informed consent was obtained from all subjects before recruiting him/her into the study. Good clinical practices were followed throughout the study as per the Indian Council for Medical Research guidelines.

Additional information

Communicated by Shuang-Jiang Liu.

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Agarwal, D.M., Dhotre, D.P., Kumbhare, S.V. et al. Disruptions in oral and nasal microbiota in biomass and tobacco smoke associated chronic obstructive pulmonary disease. Arch Microbiol 203, 2087–2099 (2021). https://doi.org/10.1007/s00203-020-02155-9

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  • DOI: https://doi.org/10.1007/s00203-020-02155-9

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