Abstract:
BACKGROUND:Cell tight junction proteins create a barrier between airway epithelial cells to limit paracellular transport from the apical to basolateral surface. This barrier can impede the entry of respiratory pathogens and toxins from the airway lumen into the systemic circulation. Mast cell-mediated inflammation in the human airway can cause a disruption of this barrier. Tryptase is one of the major mediators released by mast cells and has been studied extensively in diseases such as asthma, reflux, and sinusitis. We hypothesize that tryptase may play a role in airway paracellular permeability by disrupting the cell tight junction proteins. METHODS:We tested this hypothesis by applying tryptase on the apical and basolateral surface to primary human airway epithelia grown in an air-liquid interface and measured changes in the transepithelial conductance and paracellular permeability of the membrane during short (every minute) and longer (over hours) time courses. We then immunostained the cell membranes for occludins and claudins to observe for changes in the structure of the tight junctions after tryptase application. RESULTS:Our data show that tryptase does not alter paracellular permeability in human airway cells over minutes or hours, and that tryptase does not alter the structure of the cell junction. CONCLUSION:Tryptase alone does not alter paracellular permeability in human airway cells. Tryptase may be altering the epithelial membrane independent of the cell tight junction pathway or other mast cell mediators may play a role in permeability.
journal_name
Am J Rhinol Allergyjournal_title
American journal of rhinology & allergyauthors
Chang EH,Lee JH,Zabner Jdoi
10.2500/ajra.2010.24.3442subject
Has Abstractpub_date
2010-03-01 00:00:00pages
126-8issue
2eissn
1945-8924issn
1945-8932journal_volume
24pub_type
杂志文章abstract:BACKGROUND:Ginseng (Panax ginseng C.A. Meyer) has been used in Asian countries for the treatment of various diseases. However, the mechanisms of liquid Panax ginseng (LG) on allergic inflammatory response in epidermal growth factor (EGF)-stimulated human airway epithelial cells remain largely unclear. METHODS:MUC5AC, ...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2011.25.3586
更新日期:2011-03-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
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更新日期:2015-11-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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更新日期:2017-11-01 00:00:00
abstract:BACKGROUND:This study reports the combined experience of the University of Miami and University of Pittsburgh with endoscopic endonasal resection of esthesioneuroblastoma (ENB). A retrospective case series review was performed in a tertiary care university hospital. METHODS:Twenty-three patients, 16 men and 7 women, w...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,多中心研究
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更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:This study evaluates if there is any benefit of adding epinephrine to lidocaine in patients undergoing diagnostic rigid nasal endoscopy. A prospective, randomized, double-blinded study was performed. METHODS:Seventy patients were randomized to receive either 2% lidocaine or 2% lidocaine with 0.2% epinephrin...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
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更新日期:2014-11-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2009.23.3287
更新日期:2009-03-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2012.26.3784
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND:One of the major causes of olfactory disturbances is chronic rhinosinusitis (CRS), and the main surgical modality to treat CRS is functional endoscopic sinus surgery (FESS). It, therefore, is essential to assess the effect of this surgery on olfaction. Also, it is necessary to find new ways of measuring olfa...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
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更新日期:2015-07-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2010.24.3482
更新日期:2010-05-01 00:00:00
abstract::Background Retronasal olfaction is important in flavor detection and enjoyment. The ability to identify specific individual retronasal odors may play a role in quality of life for patients with chronic rhinosinusitis (CRS). Objective To identify patterns and improve understanding of retronasal identification of indivi...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.1177/1945892418793540
更新日期:2018-09-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2012.26.3744
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:The impact of middle turbinate resection (MTR) on olfaction remains a point of debate in the current literature. Few studies have objectively evaluated olfactory cleft airflow following MTR; thus, the mechanism by which MTR may impact olfaction is poorly understood. It is not known whether the postsurgical c...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.1177/1945892418816841
更新日期:2019-05-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2009.23.3295
更新日期:2009-03-01 00:00:00
abstract:BACKGROUND:The management of allergic rhinitis (AR) encompasses education, pharmacotherapy, immunotherapy, and surgery. FK506 (tacrolimus) is an immunosuppressant that inhibits allergic reactions. The purpose of this study was to reveal whether FK506 treatment reduces allergic inflammation in an AR mouse model and to ...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2012.26.3743
更新日期:2012-03-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.1177/1945892418768159
更新日期:2018-05-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2014.28.4046
更新日期:2014-07-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 临床试验,杂志文章
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更新日期:2013-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
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更新日期:2009-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2013.27.3973
更新日期:2013-11-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章,随机对照试验
doi:10.2500/ajra.2011.25.3668
更新日期:2011-11-01 00:00:00
abstract:INTRODUCTION:Endoscopic skull base surgery (ESBS) provides a safe, minimally invasive approach to treat benign and malignant skull base lesions. The significance of concomitant sinonasal pathology on imaging in patients undergoing ESBS and its effect on perioperative management is not well described. We sought to ident...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.1177/1945892420949130
更新日期:2020-08-11 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2013.27.3927
更新日期:2013-05-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2010.24.3421
更新日期:2010-01-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2011.25.3611
更新日期:2011-07-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2013.27.3848
更新日期:2013-03-01 00:00:00
abstract:BACKGROUND:Increasingly bacterial biofilms have been implicated in chronic rhinosinusitis (CRS), and conventional treatment methods have failed to completely eradicate biofilms. (1) Terminal sialic acids present on sinus mucosal glycoproteins are targets for bacterial adherence and biofilm formation. (2) A subpopulatio...
journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2010.24.3504
更新日期:2010-09-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2009.23.3413
更新日期:2009-11-01 00:00:00
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journal_title:American journal of rhinology & allergy
pub_type: 杂志文章
doi:10.2500/ajra.2017.31.4436
更新日期:2017-07-01 00:00:00