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Review Articles

Role of pulmonary microorganisms in the development of chronic obstructive pulmonary disease

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Pages 1-12 | Received 23 Feb 2020, Accepted 26 Sep 2020, Published online: 10 Oct 2020
 

Abstract

Chronic obstructive pulmonary disease (COPD) is a chronic obstructive respiratory disease characterized by irreversible airway limitation and persistent respiratory symptoms. The main clinical symptoms of COPD are dyspnoea, chronic cough, and sputum. COPD is often accompanied by other respiratory diseases, which can cause worsening of the disease. COPD patients with dyspnoea and aggravation of cough and sputum symptoms represent acute exacerbations of COPD (AECOPD). There is mounting evidence suggesting that dysbiosis of pulmonary microbiota participates in the disease. However, investigations of dysbiosis of pulmonary microbiota and the disease are still in initial phases. To screen, diagnose, and treat this respiratory disease, integrating data from different studies can improve our understanding of the occurrence and development of COPD and AECOPD. In this review, COPD epidemiology and the primary triggering mechanism are explored. Emerging knowledge regarding the association of inflammation, caused by pulmonary microbiome imbalance, and changes in lung microbiome flora species involved in the development of the disease are also highlighted. These data will further our understanding of the pathogenesis of COPD and AECOPD and may yield novel strategies for the use of pulmonary microbiota as a potential therapeutic intervention.

Disclosure statement

The authors declare that they have no conflict of interest.

Additional information

Funding

This research was supported financially by State Key Program of National Natural Science of China [No. 82030007]; National Science Foundation of China [No. 31701127]; Science and Technology Project of Sichuan [No. 2019YJ0407, No. 2017YJ0165], and Foundation of Affiliated Hospital of Southwest Medical University [No. 2015-YJ011]. Finally, the authors apologize for any omission in referencing owing to space restriction.

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