Abstract:
BACKGROUND:Adolescence is a period of change, which coincides with disease remission in a significant proportion of subjects with childhood asthma. There is incomplete understanding of the changing characteristics underlying different adolescent asthma transitions. We undertook pathophysiological characterization of transitional adolescent asthma phenotypes in a longitudinal birth cohort. METHODS:The Isle of Wight Birth Cohort (N = 1456) was reviewed at 1, 2, 4, 10 and 18-years. Characterization included questionnaires, skin tests, spirometry, exhaled nitric oxide, bronchial challenge and (in a subset of 100 at 18-years) induced sputum. Asthma groups were "never asthma" (no asthma since birth), "persistent asthma" (asthma at age 10 and 18), "remission asthma" (asthma at age 10 but not at 18) and "adolescent-onset asthma" (asthma at age 18 but not at age 10). RESULTS:Participants whose asthma remitted during adolescence had lower bronchial reactivity (odds ratio (OR) 0.30; CI 0.10 -0.90; p = 0.03) at age 10 plus greater improvement in lung function (forced expiratory flow 25-75% gain: 1.7 L; 1.0-2.9; p = 0.04) compared to persistent asthma by age 18. Male sex (0.3; 0.1-0.7; p < 0.01) and lower acetaminophen use (0.4; 0.2-0.8; p < 0.01) independently favoured asthma remission, when compared to persistent asthma. Asthma remission had a lower total sputum cell count compared to never asthma (31.5 [25-75 centiles] 12.9-40.4) vs. 47.0 (19.5-181.3); p = 0.03). Sputum examination in adolescent-onset asthma showed eosinophilic airway inflammation (3.0%, 0.7-6.6), not seen in persistent asthma (1.0%, 0-3.9), while remission group had the lowest sputum eosinophil count (0.3%, 0-1.4) and lowest eosinophils/neutrophils ratio of 0.0 (Interquartile range: 0.1). CONCLUSION:Asthma remission during adolescence is associated with lower initial BHR and greater gain in small airways function, while adolescent-onset asthma is primarily eosinophilic.
journal_name
Respir Resjournal_title
Respiratory researchauthors
Arshad SH,Raza A,Lau L,Bawakid K,Karmaus W,Zhang H,Ewart S,Patil V,Roberts G,Kurukulaaratchy Rdoi
10.1186/s12931-014-0153-7subject
Has Abstractpub_date
2014-11-29 00:00:00pages
153eissn
1465-9921issn
1465-993Xpii
s12931-014-0153-7journal_volume
15pub_type
杂志文章abstract:BACKGROUND:Skeletal muscle weakness in chronic obstructive pulmonary disease (COPD) is an important predictor of poor prognosis, but the molecular mechanisms of muscle weakness in COPD have not been fully elucidated. The aim of this study was to investigate the role of histone deacetylases(HDAC) in skeletal muscle weak...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-017-0588-8
更新日期:2017-05-19 00:00:00
abstract:BACKGROUND:Nintedanib is an approved therapy for idiopathic pulmonary fibrosis (IPF). Some patients treated with nintedanib experience weight loss. Exploratory data suggest that low body mass index or weight loss are associated with worse outcomes in patients with IPF. We investigated whether BMI at baseline or weight ...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-020-01528-4
更新日期:2020-11-25 00:00:00
abstract::The diagnosis of depression, a frequent comorbidity of chronic obstructive pulmonary disease (COPD), is often supported by questionnaires, such as the Patient Health Questionnaire 9 (PHQ-9). It is unknown to which extent its single questions are affected by the clinical characteristics of COPD patients.We addressed th...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-019-0997-y
更新日期:2019-02-11 00:00:00
abstract:BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a rare disease with a median survival of 3-5 years after diagnosis with limited treatment options. The aim of this study is to assess the psychometric characteristics of the Short Form 36 Health Status Questionnaire (SF-36) in IPF and to provide disease specific minimal...
journal_title:Respiratory research
pub_type: 临床试验,杂志文章
doi:10.1186/s12931-019-1010-5
更新日期:2019-03-01 00:00:00
abstract:BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a rapid progressive fibro-proliferative disorder with poor prognosis similar to lung cancer. The pathogenesis of IPF is uncertain, but loss of epithelial cells and fibroblast proliferation are thought to be central processes. Previous reports have shown that BARD1 expre...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-015-0278-3
更新日期:2015-09-29 00:00:00
abstract:BACKGROUND:Using guinea pig tracheal preparations, we have recently shown that endogenous arginase activity attenuates inhibitory nonadrenergic noncholinergic (iNANC) nerve-mediated airway smooth muscle relaxation by reducing nitric oxide (NO) production--due to competition with neuronal NO-synthase (nNOS) for the comm...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-7-6
更新日期:2006-01-12 00:00:00
abstract::Signaling through G protein-coupled receptors (GPCRs) mediates numerous airway smooth muscle (ASM) functions including contraction, growth, and "synthetic" functions that orchestrate airway inflammation and promote remodeling of airway architecture. In this review we provide a comprehensive overview of the GPCRs that ...
journal_title:Respiratory research
pub_type: 杂志文章,评审
doi:
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:In asthma, higher chymase positive mast cell (MC-C) numbers are associated with less airway obstruction. In COPD, the distribution of MC-C and tryptase positive mast cells (MC-T) in central and peripheral airways, and their relation with lung function, is unknown. We compared MC-T and MC-C distributions in C...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-9-64
更新日期:2008-09-10 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:The discrepancy between functional and inflammatory airway response to ozone has been reported in normal subjects, but few data are available for stable asthmatics regularly treated with inhaled corticosteroids. METHODS:Twenty-three well controlled, regularly treated, mild-to-moderate asthmatic patients und...
journal_title:Respiratory research
pub_type: 杂志文章,随机对照试验
doi:10.1186/1465-9921-11-5
更新日期:2010-01-19 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::Asthmatics are more susceptible to influenza infections, yet mechanisms mediating this enhanced susceptibility are unknown. Influenza virus hemagglutinin (HA) protein binds to sialic acid residues on the host cells. HA requires cleavage to allow fusion of the viral HA with host cell membrane, which is mediated by host...
journal_title:Respiratory research
pub_type: 信件
doi:10.1186/1465-9921-13-82
更新日期:2012-09-19 00:00:00
abstract:BACKGROUND:Adherence to tuberculosis (TB) treatment is troublesome, due to long therapy duration, quick therapeutic response which allows the patient to disregard about the rest of their treatment and the lack of motivation on behalf of the patient for improved. The objective of this study was to develop and validate a...
journal_title:Respiratory research
pub_type: 杂志文章,多中心研究
doi:10.1186/1465-9921-13-75
更新日期:2012-09-02 00:00:00
abstract:BACKGROUND:To identify COPD associated gene susceptibility and lung function in a longitudinal cohort including COPD and subjects who were at risk for developing COPD, and to replicate this in two cross-sectional and longitudinal populations in Chinese Han population. METHODS:Three cohorts were recruited in this study...
journal_title:Respiratory research
pub_type: 杂志文章,多中心研究
doi:10.1186/s12931-015-0209-3
更新日期:2015-04-18 00:00:00
abstract:BACKGROUND:Airway absorption and bioavailability of inhaled corticosteroids (ICSs) may be influenced by differences in pharmacokinetic properties such as lipophilicity and patient characteristics such as lung function. This study aimed to further investigate and clarify the distribution of budesonide and fluticasone in...
journal_title:Respiratory research
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1186/1465-9921-10-104
更新日期:2009-10-31 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:Low body mass index has been associated with increased mortality in severe COPD. The impact of body composition earlier in the disease remains unclear. We studied the impact of body composition on the risk of functional limitation in COPD. METHODS:We used bioelectrical impedance to estimate body composition...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-8-7
更新日期:2007-01-29 00:00:00
abstract:RESEARCH QUESTION:There is no widely accepted grading system for IPF disease severity, although physiologic impairment based on pulmonary function testing is frequently employed. We sought to describe clinical and functional characteristics as well as outcomes of patients with severe physiologic impairment. PATIENTS A...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-020-01600-z
更新日期:2021-01-06 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:Acute respiratory distress syndrome (ARDS) can have various causes. The study objective was to investigate whether different pathophysiologic models of ARDS would show different respiratory, cardiovascular and inflammatory outcomes. METHODS:We performed a prospective, randomized study in 27 ventilated ewes ...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-020-01475-0
更新日期:2020-08-08 00:00:00
abstract:BACKGROUND:Recently, increased tumor incidence and cancer-related mortality have been reported among patients with obstructive sleep apnea (OSA). Intermittent hypoxia (IH), the hallmark feature of OSA, contributes to the metastasis of tumors. However, the molecular mechanisms by which tumor metastasis is accelerated by...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-018-0727-x
更新日期:2018-02-12 00:00:00
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:Several studies have implicated a role of inflammation in the pathogenesis of lung damage in idiopathic pulmonary fibrosis (IPF). Parenchymal lung damage leads to defects in mechanics and gas exchange and clinically manifests with exertional dyspnea. Investigations of inflammatory cells in IPF have shown tha...
journal_title:Respiratory research
pub_type: 临床试验,杂志文章
doi:10.1186/1465-9921-6-81
更新日期:2005-07-24 00:00:00
abstract:BACKGROUND:The home is the predominant environment for exposure to many environmental irritants such as air pollutants and allergens. Exposure to common indoor irritants including volatile organic compounds, formaldehyde and nitrogen dioxide, may increase the risk of snoring for children. The aim of this study was to i...
journal_title:Respiratory research
pub_type: 杂志文章,随机对照试验
doi:10.1186/1465-9921-5-19
更新日期:2004-11-04 00:00:00
abstract::Asthma is a complex inflammatory disorder controlled by both genetic and environmental influences. Multiple genetic analyses have identified the T helper type 2 (Th2) cytokine gene cluster on chromosome 5q as a susceptibility locus for asthma. Recently, the Th2 cytokine interleukin-13 has been shown to be a critical m...
journal_title:Respiratory research
pub_type: 杂志文章,评审
doi:10.1186/rr7
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:The sources and measurement of reactive oxygen species (ROS) in intact organs are largely unresolved. This may be related to methodological problems associated with the techniques currently employed for ROS detection. Electron spin resonance (ESR) with spin trapping is a specific method for ROS detection, an...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/1465-9921-6-86
更新日期:2005-07-31 00:00:00
abstract:BACKGROUND:Organ regeneration in mammals is hypothesized to require a functional pool of stem or progenitor cells, but the role of these cells in lung regeneration is unknown. METHODS:Based on the fact that postnatal regeneration of alveolar tissue has been attributed to alveolar epithelial cells, we established a hem...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-016-0480-y
更新日期:2016-12-07 00:00:00
abstract:BACKGROUND:Colonization of the airways with potential pathogenic bacteria is observed in a number of chronic respiratory diseases, such as COPD or cystic fibrosis. Infections with respiratory viruses are known triggers of exacerbations of these diseases. We here investigated if pre-exposure to bacteria alters the respo...
journal_title:Respiratory research
pub_type: 杂志文章
doi:10.1186/s12931-016-0382-z
更新日期:2016-06-03 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...
journal_title:Respiratory research
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