The Role of Respiratory Flora in the Pathogenesis of Chronic Respiratory Diseases

Author:

Guo Mei-Ying1,Chen Hao-Kun1,Ying Hua-Zhong1,Qiu Fen-Sheng1ORCID,Wu Jun-Qi2ORCID

Affiliation:

1. Zhejiang Key Laboratory of Experimental Animal and Safety Evaluation, Hangzhou Medical College, Hangzhou 310013, China

2. Clinical Laboratory, Jinhua Municipal Central Hospital Medical Group, Jinhua 321000, China

Abstract

Large quantities of bacteria, including Firmicutes, Actinobacteria, and Bacteroidetes, colonize the surface of the respiratory mucosa of healthy people. They interact and coexist with the local mucosal immune system of the human airway, maintaining the immune stability and balance of the respiratory system. While suffering from chronic respiratory diseases, the microbial population in the airway changes and the proportion of Proteobacteria is increased in patients with asthma. The abundance of the microbial population in patients with chronic obstructive pulmonary disease (COPD) is decreased, and conversely, the proportion of Firmicutes and Proteobacteria increased. The diversity of airway microorganisms in cystic fibrosis (CF) patients is decreased, while pathogenic bacteria and conditional pathogenic bacteria are proliferated in large numbers. The proportion of Firmicutes and Proteobacteria is increased in patients with upper airway cough syndrome (UACS), which replaces the dominance of Streptococcus and Neisseria in the pharynx of a normal population. Therefore, a clear understanding of the immune process of the airway flora and the immune dysfunction of the flora on the pathogenesis of chronic respiratory diseases can provide new ideas for the prevention and treatment of human respiratory diseases.

Funder

Zhejiang Disciplinary Construction of Laboratory Animal Genetic Engineering

Publisher

Hindawi Limited

Subject

General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine

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