Lower Airways and Pollution
نویسندگان
چکیده
منابع مشابه
Rhinoviruses infect the lower airways.
Rhinoviruses are the major cause of the common cold and a trigger of acute asthma exacerbations. Whether these exacerbations result from direct infection of the lower airway or from indirect mechanisms consequent on infection of the upper airway alone is currently unknown. Lower respiratory infection was investigated in vitro by exposing primary human bronchial epithelial cells to rhinoviruses ...
متن کاملProstaglandin E2 protects lower airways against bronchoconstriction.
Prostaglandin E2 (PGE2), similar to beta-adrenergic receptor agonists, can protect airways from bronchoconstriction and resulting increase in airway resistance induced by a number of agents, including cholinergic receptor agonists and antigen. We examined the impact of sustained alterations in PGE2 pathways on changes in airway resistance. Genetic methods were utilized to alter PGE2 metabolism ...
متن کاملThe cystic fibrosis lower airways microbial metagenome
Chronic airway infections determine most morbidity in people with cystic fibrosis (CF). Herein, we present unbiased quantitative data about the frequency and abundance of DNA viruses, archaea, bacteria, moulds and fungi in CF lower airways. Induced sputa were collected on several occasions from children, adolescents and adults with CF. Deep sputum metagenome sequencing identified, on average, a...
متن کاملAirways changes related to air pollution exposure in wheezing children.
In this study, we aimed to evaluate the relationship between individual total exposure to air pollution and airway changes in a group of 51 wheezing children. Respiratory status was assessed four times (January 2006, June 2006, January 2007 and June 2007) during a 1-week period through a standardised questionnaire, spirometry, exhaled nitric oxide fraction and pH in exhaled breath condensate (E...
متن کاملAnatomy of the Lower Airways – Larynx and Trachea
The Larynx, trachea and the main bronchi together form the extrapulmonary lower airways. After air has been warmed and moistened in the upper airways (nose and pharynx), it passes through the larynx – the guardian of the airways. the larynx separates the trachea from the esophagus and is the organ from which voice is produced. The air then passes the tube-shaped trachea, which bifurcates into t...
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ژورنال
عنوان ژورنال: Jornal de Pediatria
سال: 1997
ISSN: 0021-7557
DOI: 10.2223/jped.526