CT and Functional MRI to Evaluate Airway Mucus in Severe Asthma
نویسندگان
چکیده
منابع مشابه
Airway Mucus and Asthma: The Role of MUC5AC and MUC5B
Asthma is characterized by mucus abnormalities. Airway epithelial hyperplasia and metaplasia result in changes in stored and secreted mucin and the production of a pathologic mucus gel. Mucus transport is impaired, culminating in mucus plugging and airway obstruction-a major cause of morbidity in asthma. The polymeric mucins MUC5AC and MUC5B are integral components of airway mucus. MUC5AC and M...
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RATIONALE Despite long-term therapy with corticosteroids, patients with severe asthma develop irreversible airway obstruction. OBJECTIVES To evaluate if there are structural and functional differences in the airway epithelium in severe asthma associated with airway remodeling. METHODS In bronchial biopsies from 21 normal subjects, 11 subjects with chronic bronchitis, 9 subjects with mild as...
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Hypersecretion of mucus is a cardinal sign of airways inflammation. Normally, secretion of mucus is designed to protect the respiratory portion of the lung from injury, but in disease its chronic overproduction in large airways (bronchi) and its appearance in small conducting airways (bronchioles) may be detrimental. Its relevance to patient discomfort and infection is generally accepted, but i...
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BACKGROUND The lower airways harbor a community of bacterial species which is altered in asthma. OBJECTIVES We examined whether the lower airway microbiota were related to measures of asthma severity. METHODS We prospectively recruited 26 severe asthma, 18 non-severe asthma and 12 healthy subjects. DNA was extracted from induced sputum and PCR amplification of the V3-V5 region of bacterial ...
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ژورنال
عنوان ژورنال: Chest
سال: 2019
ISSN: 0012-3692
DOI: 10.1016/j.chest.2019.05.019