نتایج جستجو برای: tracheal

تعداد نتایج: 16805  

Journal: :Developmental biology 2009
Liang Zhang Robert E Ward

The tracheal system of Drosophila melanogaster has proven to be an excellent model system for studying the development of branched tubular organs. Mechanisms regulating the patterning and initial maturation of the tracheal system have been largely worked out, yet important questions remain regarding how the mature tubes inflate with air at the end of embryogenesis, and how the tracheal system g...

2008
Kidong Eom Kumjung Moon Yunsang Seong Taeho Oh Sungjoon Yi Keunwoo Lee Kwangho Jang

Tracheal ultrasonography was performed to measure the width of the tracheal ring shadow and to assess the clinical relevance of these measurements for identifying tracheal collapse. The first tracheal ring width (FTRW) and thoracic inlet tracheal ring width (TITRW) were measured on both expiration and inspiration. The mean of the FTRW width (129 dogs) was greater in expiration (10.97 plusmn; 1....

Journal: :Development 1997
M Llimargas J Casanova

Cell migration is an important step in a variety of developmental processes in many multicellular organisms. A particularly appropriate model to address the study of cell migration is the tracheal system of Drosophila, whose formation occurs by migration and fusion from clusters of ectodermal cells specified in each side of ten embryonic segments. Morphogenesis of the tracheal tree requires the...

2017
Thomas Penzel AbdelKebir Sabil

Tracheal sounds have been the subject of many research studies. In this review, we describe the state of the art, original work relevant to upper airways obstruction during sleep, and ongoing research concerning the methods used when analysing tracheal sounds. Tracheal sound sensors are a simple and noninvasive means of measurement and are more reliable than other breathing sensors. Development...

2016
Gustavo Bittencourt Camilo Fernando Silva Guimarães Roberto Mogami Alvaro Camilo Dias Faria Pedro Lopes Melo Agnaldo José Lopes

INTRODUCTION Although impaired pulmonary function and respiratory sleep disorders are described as responsible for increased mortality in acromegalic patients, little is known about the tracheal abnormalities in this group of patients. Thus, the objectives of this study were to describe the tracheal structural abnormalities and correlate these changes with the respiratory function and clinical ...

Journal: :The European respiratory journal 1998
D Pavlovic N Viires C Zedda M Fournier M Aubier

Corticosteroids, efficient drugs for the treatment of severe asthma, may have numerous side effects. We investigated the effects of 7 days of treatment with triamcinolone (1.2 mg x kg(-1) x day(-1)) on the epithelial structure, tracheal smooth muscle cross-sectional area and contractility in the rat. The corticosteroid-injected rats were compared to pair-fed, and pair-weighed animals. Histologi...

Journal: :Arquivos de gastroenterologia 2009
Mariana de Almeida Simão Camila Albuquerque Nobre Alacid Katia Alonso Rodrigues Christiane Albuquerque Ana Maria Furkim

CONTEXT Many patients in use of mechanical ventilation show clinical complications due to tracheal aspiration. Assessment and early methods are necessary, so that preventive and safety measures apply to this patients. OBJECTIVE To study the incidence of tracheal aspiration of saliva in tracheotomized patients treated in intensive care unit using two modes of mechanical ventilation and with di...

Journal: :Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine 2006
Antonio Sanna Rossana Fargnoli Gianna Camiciottoli

We describe a case of obstructive sleep apnea syndrome that occurred after tracheal surgery. The patient refused a tracheal stent placement and any surgical procedure aimed at stabilizing the tracheal walls. She was treated with a continuous positive airway pressure.

Journal: :iranian red crescent medical journal 0
rana keyhanmanesh drug applied research center, tabriz university of medical sciences, tabriz, ir iran; department of physiology, tabriz university of medical sciences, tabriz, ir iran; tuberculosis and lung research center, tabriz university of medical sciences, tabriz, ir iran hossein nazemiyeh pharmaceutical nanotechnology research center, tabriz university of medical sciences, tabriz, ir iran hossein mazouchian student research committee, student research center, tabriz university of medical sciences, tabriz, ir iran mohammad mahdi bagheri asl student research committee, student research center, tabriz university of medical sciences, tabriz, ir iran mahdi karimi shoar student research committee, student research center, tabriz university of medical sciences, tabriz, ir iran mohammad reza alipour tuberculosis and lung research center, tabriz university of medical sciences, tabriz, ir iran; tuberculosis and lung research center, tabriz university of medical sciences, tabriz, ir iran. tel/fax: +98-4113364664

conclusions these results showed the preventive effect of hydroethanolic extract of n. sativa on tracheal responsiveness of guinea pig model of copd, which was as effective as vitamin c. results the tracheal responsiveness to both methacholine and ovalbumin in guinea pigs with copd were significantly higher than those of controls (p < 0.001 for both cases). the tracheal responsiveness in the co...

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