Abstract:
:By airway surface liquid, we mean a thin fluid continuum consisting of the airway lining layer and the alveolar lining layer, which not only serves as a protective barrier against foreign particles but also contributes to maintaining normal respiratory mechanics. In recent years, measurements of the rheological properties of airway surface liquid have attracted considerable clinical attention due to new advances in microrheology instruments and methods. This article reviews the clinical relevance of measurements of airway surface liquid viscoelasticity and surface tension from four main aspects: maintaining the stability of the airways and alveoli, preventing ventilator-induced lung injury, optimizing surfactant replacement therapy for respiratory syndrome distress, and characterizing the barrier properties of airway mucus to improve drug and gene delivery. Primary measuring techniques and methods suitable for determining the viscoelasticity and surface tension of airway surface liquid are then introduced with respect to principles, advantages and limitations. Cone and plate viscometers and particle tracking microrheometers are the most commonly used instruments for measuring the bulk viscosity and microviscosity of airway surface liquid, respectively, and pendant drop methods are particularly suitable for the measurement of airway surface liquid surface tension in vitro. Currently, in vivo and in situ measurements of the viscoelasticity and surface tension of the airway surface liquid in humans still presents many challenges.
journal_name
Respir Resjournal_title
Respiratory researchauthors
Chen Z,Zhong M,Luo Y,Deng L,Hu Z,Song Ydoi
10.1186/s12931-019-1229-1subject
Has Abstractpub_date
2019-12-04 00:00:00pages
274issue
1eissn
1465-9921issn
1465-993Xpii
10.1186/s12931-019-1229-1journal_volume
20pub_type
杂志文章,评审abstract:BACKGROUND:The chronic obstructive pulmonary disease (COPD) Assessment Test (CAT) is a concise health status measure for COPD. COPD patients have a variety of comorbidities, but little is known about their impact on quality of life. This study was designed to investigate comorbid factors that may contribute to high CAT...
journal_title:Respiratory research
pub_type: 临床试验,杂志文章
doi:10.1186/1465-9921-15-13
更新日期:2014-02-06 00:00:00
abstract:BACKGROUND:Initial combination therapy with ambrisentan and tadalafil reduced the risk of clinical failure events for treatment-naïve participants with pulmonary arterial hypertension (PAH) as compared to monotherapy. Previous studies in PAH have demonstrated greater treatment benefits in more symptomatic participants....
journal_title:Respiratory research
pub_type: 杂志文章,随机对照试验
doi:10.1186/s12931-019-1180-1
更新日期:2019-09-12 00:00:00
abstract:BACKGROUND:Proteomic studies of respiratory disorders have the potential to identify protein biomarkers for diagnosis and disease monitoring. Utilisation of sensitive quantitative proteomic methods creates opportunities to determine individual patient proteomes. The aim of the current study was to determine if quantita...
journal_title:Respiratory research
pub_type: 杂志文章,随机对照试验
doi:10.1186/1465-9921-12-124
更新日期:2011-09-22 00:00:00
abstract:BACKGROUND:Heightened inflammation, including expression of COX-2, is associated with COPD pathogenesis. RelB is an NF-κB family member that attenuates COX-2 in response to cigarette smoke by a mechanism that may involve the miRNA miR-146a. There is no information on the expression of RelB in COPD or if RelB prevents C...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-015-0214-6
更新日期:2015-05-06 00:00:00
abstract:INTRODUCTION:Bacteria have been extensively implicated in the development of smoking related diseases, such as COPD, by either direct infection or bacteria-mediated inflammation. In response to the health risks associated with tobacco exposure, the use of electronic cigarettes (e-cigs) has increased. This study compare...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-019-1206-8
更新日期:2019-12-18 00:00:00
abstract:BACKGROUND:Although protective mechanical ventilation (MV) has been used in a variety of applications, lung injury may occur in both patients with and without acute respiratory distress syndrome (ARDS). The purpose of this study is to use machine learning to identify clinical phenotypes for critically ill patients with...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-020-01588-6
更新日期:2020-12-10 00:00:00
abstract:BACKGROUND:Possible variation in bronchodilator response (BDR) according to age at the diagnosis of adult-onset asthma is unknown. Our aim was to assess if BDR in FEV1 is related to age at diagnosis of adult-onset asthma and how many subjects fulfill the 400 mL criterion of BDR, the suggested cut-off for asthma-like re...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-020-01441-w
更新日期:2020-07-13 00:00:00
abstract:BACKGROUND:Pulmonary arterial hypertension (PAH) is associated with inflammatory response but it is unknown whether it is associated with alterations in NNMT activity and MNA plasma concentration. Here we examined changes in NNMT-MNA pathway in PAH in rats and humans. METHODS:PAH in rats was induced by a single subcut...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-016-0423-7
更新日期:2016-08-31 00:00:00
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journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-018-0822-z
更新日期:2018-06-22 00:00:00
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journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-15-35
更新日期:2014-03-25 00:00:00
abstract:BACKGROUND:Chronic obstructive pulmonary disease (COPD) is a progressive and irreversible chronic inflammatory disease of the lung. The nature of the immune reaction in COPD raises the possibility that IL-17 and related cytokines may contribute to this disorder. This study analyzed the expression of IL-17A and IL-17F a...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-12-43
更新日期:2011-04-10 00:00:00
abstract:BACKGROUND:High-tidal-volume mechanical ventilation and hyperoxia used in patients with acute lung injury (ALI) can induce the release of cytokines, including high-mobility group box-1 (HMGB1), oxygen radicals, neutrophil infiltration, and the disruption of epithelial and endothelial barriers. Hyperoxia has been shown ...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-12-90
更新日期:2011-07-05 00:00:00
abstract:BACKGROUND:Lung cancer is one of the leading cause of cancer-related death in the world. Recently, many clinical researches have reported that COL6A3 had strong role in many diseases. The aim of this study was to evaluate the association between single nucleotide polymorphisms (SNPs) in COL6A3 and lung cancer susceptib...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-019-1114-y
更新日期:2019-07-08 00:00:00
abstract:BACKGROUND:The prevalence of pneumocystis pneumonia (PCP) and associated hypoxic respiratory failure is increasing in human immunodeficiency virus (HIV)-negative patients. However, no prior studies have evaluated the effect of early anti-PCP treatment on clinical outcomes in HIV-negative patient with severe PCP. Theref...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-019-1188-6
更新日期:2019-09-26 00:00:00
abstract:BACKGROUND:Antigen desensitization through oral tolerance is becoming an increasingly attractive treatment option for allergic diseases. However, the mechanism(s) by which tolerization is achieved remain poorly defined. In this study we endeavored to induce oral tolerance to cockroach allergen (CRA: a complex mixture o...
journal_title:Respiratory research
pub_type: 杂志文章,随机对照试验
doi:10.1186/1465-9921-11-160
更新日期:2010-11-23 00:00:00
abstract:BACKGROUND:Human beta-defensin-4 (hBD-4), a new member of the beta-defensin family, was discovered by an analysis of the genomic sequence. The objective of this study was to clarify hBD-4 expression in human lung tissue, along with the inducible expression in response to infectious stimuli, localization, and antimicrob...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-6-130
更新日期:2005-11-04 00:00:00
abstract:BACKGROUND:Azithromycin (Azm) is a macrolide recognized for its disease-modifying effects and reduction in exacerbation of chronic airway diseases. It is not clear whether the beneficial effects of Azm are due to its anti-microbial activity or other pharmacological actions. We have shown that Azm affects the integrity ...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-019-1101-3
更新日期:2019-06-24 00:00:00
abstract:BACKGROUND:Bronchiolitis obliterans syndrome (BOS) after allogeneic hematopoietic stem cell transplantation (HSCT) is currently treated with systemic corticosteroids despite poor efficacy and side effects. This study investigated the therapeutic effect of budesonide/formoterol, montelukast and n-acetylcysteine, which a...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-016-0380-1
更新日期:2016-05-26 00:00:00
abstract::Transposable elements (TEs) are a class of mobile genetic elements (MGEs) that were long regarded as junk DNA, which make up approximately 45% of the genome. Although most of these elements are rendered inactive by mutations and other gene silencing mechanisms, TEs such as long interspersed nuclear elements (LINEs) ar...
journal_title:Respiratory research
pub_type: 杂志文章,评审
doi:10.1186/1465-9921-14-99
更新日期:2013-10-05 00:00:00
abstract::Mitogen-activated protein kinase (MAPK) phosphatase 1 (MKP-1) is a protein with anti-inflammatory properties and the archetypal member of the dual-specificity phosphatases (DUSPs) family that have emerged over the past decade as playing an instrumental role in the regulation of airway inflammation. Not only does MKP-1...
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pub_type: 杂志文章,评审
doi:10.1186/s12931-017-0637-3
更新日期:2017-08-10 00:00:00
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journal_title:Respiratory research
pub_type: 杂志文章,多中心研究
doi:10.1186/1465-9921-15-27
更新日期:2014-03-04 00:00:00
abstract:BACKGROUND:Asthma is a disease of varying severity and differing disease mechanisms. To date, studies aimed at stratifying asthma into clinically useful phenotypes have produced a number of phenotypes that have yet to be assessed for stability and to be validated in independent cohorts. The aim of this study was to def...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-016-0482-9
更新日期:2016-12-15 00:00:00
abstract::There is an increasing interest in the potential of exhaled biomarkers, such as volatile organic compounds (VOCs), to improve accurate diagnoses and management decisions in pulmonary diseases. The objective of this manuscript is to systematically review the current knowledge on exhaled VOCs with respect to their poten...
journal_title:Respiratory research
pub_type: 杂志文章,meta分析,评审
doi:10.1186/1465-9921-13-117
更新日期:2012-12-21 00:00:00
abstract:BACKGROUND:An increasing number of epidemiological and experimental studies have associated exposure to second-hand smoke (SHS) during pregnancy with adverse outcomes in newborns. As we have previously shown in mice, in utero exposure to SHS at critical stages of fetal development, results in altered lung responses and...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-017-0591-0
更新日期:2017-06-27 00:00:00
abstract::Bacillus Calmette-Guérin (BCG) vaccination is routine and near-universal in many low- and middle-income countries (LMIC). It has been suggested that BCG can have a protective effect on COVID-19 morbidity and mortality. This commentary discusses the limitations of the evidence around BCG and COVID-19. We argue that hig...
journal_title:Respiratory research
pub_type: 信件,评审
doi:10.1186/s12931-020-01439-4
更新日期:2020-07-11 00:00:00
abstract::The use of biomarkers in medicine lies in their ability to detect disease and support diagnostic and therapeutic decisions. New research and novel understanding of the molecular basis of the disease reveals an abundance of exciting new biomarkers who present a promise for use in the everyday clinical practice. The pas...
journal_title:Respiratory research
pub_type: 杂志文章,评审
doi:10.1186/1465-9921-6-78
更新日期:2005-07-21 00:00:00
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pub_type: 杂志文章
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更新日期:2013-01-01 00:00:00
abstract:BACKGROUND:Sputum and blood eosinophil counts predict corticosteroid effects in COPD patients. Bacterial infection causes increased airway neutrophilic inflammation. The relationship of eosinophil counts with airway bacterial load in COPD patients is uncertain. We tested the hypothesis that bacterial load and eosinophi...
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pub_type: 杂志文章
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更新日期:2017-05-08 00:00:00
abstract::Pulmonary surfactant is a complex fluid that comprises phospholipids and four proteins (SP-A, SP-B, SP-C, and SP-D) with different biological functions. SP-B, SP-C, and SP-D are essential for the lungs' surface tension function and for the organization, stability and metabolism of lung parenchyma. SP-A and SP-D, which...
journal_title:Respiratory research
pub_type: 杂志文章,评审
doi:10.1186/s12931-016-0385-9
更新日期:2016-06-01 00:00:00
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pub_type: 杂志文章
doi:10.1186/1465-9921-7-64
更新日期:2006-04-10 00:00:00