نتایج جستجو برای: pulmonary mucociliary transport

تعداد نتایج: 498766  

Journal: :Annals of the American Thoracic Society 2018

Journal: :Turkish archives of otorhinolaryngology 2016
Fatih Akagün Mehmet İmamoğlu Hatice Bengü Çobanoğlu Ahmet Ural

Objective To compare the effectiveness of radiofrequency thermal ablation with those of microdebrider-assisted turbinoplasty, we designed a prospective, randomized clinical study. Methods Forty patients suffering from nasal obstruction due to bilateral inferior turbinate hypertrophy were enrolled. Half of the patients were operated by radiofrequency thermal ablation, while the other half unde...

2008
Alexandre Martins Xavier Paulo Manuel Pêgo-Fernandes Aristides Tadeu Correia Rogerio Pazetti Rosangela Monteiro Mauro Canzian Fabio Biscegli Jatene

Purpose: To investigate the function of the bronchial mucociliary system in transplanted rat lungs with and without the infl uence of immunosuppression. Methods: Thirty-six rats underwent single-lung transplantation and were divided into two groups, one of which received cyclosporine treatment, and the control group which did not. Cyclosporine was administered subcutaneously in doses of 10 mg/k...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2002
Manako Taira Jun Tamaoki Kazuyuki Nishimura Junko Nakata Mitsuko Kondo Hisashi Takemura Atsushi Nagai

To examine the effect of adenosine A(3) receptor stimulation on airway mucociliary clearance, we measured transport of Evans blue dye in rabbit trachea in vivo and ciliary motility of epithelium by the photoelectric method in vitro. Mucociliary transport was enhanced dose dependently by the selective A(3) agonist N(6)-(3-iodobenzyl)-5'-N-methylcarbamoyladenosine (IB-MECA) and to a lesser extent...

Journal: :Journal of applied physiology 2016
Ivan M Lang Steven T Haworth Bidyut K Medda Hubert Forster Reza Shaker

Acid in the esophagus causes airway constriction, tracheobronchial mucous secretion, and a decrease in tracheal mucociliary transport rate. This study was designed to investigate the neuropharmacological mechanisms controlling these responses. In chloralose-anesthetized cats (n = 72), we investigated the effects of vagotomy or atropine (100 μg·kg(-1)·30 min(-1) iv) on airway responses to esopha...

Journal: :Journal of applied physiology 1997
S L Winters D B Yeates

To gain insight into the homeostatic mechanisms regulating airway ion/water fluxes and mucociliary transport, the canine tracheobronchial airway fluid was perturbed by deposition of hypo- and hyperosmotic aerosols for >1 h. Tracheal ciliary beat frequency (CBF) was measured by using heterodyne laser light scattering. Tracheal mucus velocity (TMV) and bronchial mucociliary clearance (BMC) were m...

Journal: :Environmental Health Perspectives 1999
M Macchione A P Oliveira C T Gallafrio F P Muchão M T Obara E T Guimarães P Artaxo M King G Lorenzi-Filho V C Junqueira P H Saldiva

This work was designed to evaluate the toxicity of inhalable particles [less than/equal to] 10 microm in aerodynamic diameter (PM(10)) collected from the urban air in São Paulo, Brazil, to the mucociliary apparatus using the frog palate preparation. Seven groups of frog palates were immersed in different concentrations of PM(10) diluted in Ringer's solution during 120 min: 0 (control, n = 31); ...

Journal: :Thorax 1985
D Pavia J R Bateman N F Sheahan J E Agnew S W Clarke

Tracheobronchial mucociliary clearance was measured in eight non-smoking patients with asthma in complete remission. The patients were symptom free and required no medication whatsoever for one to six months before assessment. Mucociliary clearance was measured with an objective, radioaerosol technique. For comparison, mucociliary clearance of eight non-smoking, healthy subjects with physical c...

Journal: :Advances in therapy 2012
Frank Begrow Corinna Böckenholt Martina Ehmen Thomas Wittig Eugen J Verspohl

INTRODUCTION Myrtol standardized is a phytomedicine obtained by distillation, consisting of many constituents. In vitro and in vivo, the major monterpenes, d-limonene, 1,8-cineole, and alpha-pinene, are used as biological marker substances. Myrtol standardized has secretolytic, secretomotor, and mucolytic effects in addition to anti-inflammatory and antioxidative actions. The aim of the study w...

2017
Hanliang Guo Eva Kanso

Mucociliary clearance is the primary defense mechanism that protects the airways from inhaled toxicants and infectious agents. The fluid medium is spatially non-homogenous, consisting of a viscoelastic mucus layer on top of a nearly-viscous periciliary layer surrounding the motile cilia. In healthy environments, the thickness of the periciliary layer is comparable to the cilia length. Perturbat...

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