Chronic inflammatory lung diseases, which include asthma and chronic obstructive pulmonary disease (COPD), have been modeled in Drosophila. Chronic airway inflammation is thought to be the primary underlying cause of these diseases. Extensive remodeling of the airways is a major characteristic of chronic inflammatory lung diseases.
In fly models, chronic airway inflammation is induced using several different methods: exposure to cigarette smoke, airway exposure to a bacterial trigger, and molecular induction via expression of the Imd signaling pathway (FBgg0001194) in tracheal cells. Airway remodeling has been observed and molecularly characterized in the fly models.
See, also, the human disease model report 'asthma, susceptibility to, ORMDL3-related' (FBhh0001038).
[updated Apr. 2021 by FlyBase; FBrf0222196]
Persistent inflammation within the respiratory tract underlies the pathogenesis of numerous chronic pulmonary diseases including chronic obstructive pulmonary disease (COPD), asthma, and pulmonary fibrosis. Chronic inflammation in the lung may arise from a combination of genetic susceptibility and environmental influences, including exposure to microbes, particles from the atmosphere, irritants, pollutants, allergens, and toxic molecules (Racanelli et al., 2018; pubmed:29130366).
Airway remodeling is broadly defined as any change in composition, distribution, thickness, mass or volume and/or number of structural components observed in the airway wall of patients relative to healthy individuals. Chronic airway inflammation is the major force driving the processes leading to most aspects of airway remodeling (Fehrenbach, et al., 2017; pubmed:28190087).
Extensive remodeling of the airways is a major characteristic of chronic inflammatory lung diseases such as asthma or chronic obstructive pulmonary disease.