Variability in ciliary beat frequency in bronchiectasis.
نویسنده
چکیده
منابع مشابه
Nasal mucociliary clearance and ciliary beat frequency in cystic fibrosis compared with sinusitis and bronchiectasis.
Nasal ciliary function and mucociliary clearance were studied in patients with cystic fibrosis and in three control groups. Ciliary beat frequency and nasal clearance time were measured in groups of 10 subjects with cystic fibrosis, sinusitis and bronchiectasis and age and sex-matched control subjects. Ciliary beat frequency was also measured in normal subjects matched as bronchiectasis control...
متن کاملVariability in ciliary beat frequency in normal subjects and in patients with bronchiectasis.
BACKGROUND There is a wide variation in tracheobronchial clearance of inhaled aerosol in normal subjects and in patients with bronchiectasis, but little information is available on the variability in ciliary beat frequency (CBF). METHODS The variability in CBF was measured in 10 nasal mucosal samples from each of 19 normal controls and 23 stable bronchiectatic subjects. RESULTS The CBF vari...
متن کاملReduction of ciliary beat frequency in vitro by sputum from patients with bronchiectasis: a serine proteinase effect.
We have examined the effect of adding elastase positive sputum from six patients with purulent bronchiectasis on the ciliary beat frequency of nasal epithelium from normal subjects. Control studies of cilia suspended in tissue culture medium showed little change in ciliary beat frequency over six hours. Cilia incubated in elastase positive secretions, however, showed a considerable decrease in ...
متن کاملBeat frequency of cilia from sites of purulent infection.
Mucociliary clearance depends on the interaction between cilia and mucus; it is delayed in the presence of purulent secretions. Nasal mucociliary clearance was examined by the saccharin method and nasal ciliary beat frequency by a photometric technique. Four groups were studied: normal controls, patients with bronchiectasis without nasal symptoms, patients with chronic mucopurulent sinusitis al...
متن کاملEffect of Cilia Beat Frequency on Muco-ciliary Clearance
Background: The airway surface liquid (ASL), which is a ï‚uid layer coating the interior epithelial surface of the bronchi and bronchiolesis, plays an important defensive role against foreign particles and chemicals entering lungs.Objective: Numerical investigation has been employed to solve two-layer model consisting of mucus layer as a viscoelastic fluid and periciliary liquid layer as a New...
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ورودعنوان ژورنال:
- Thorax
دوره 49 3 شماره
صفحات -
تاریخ انتشار 1994