Abstract:
:The long-acting beta 2-agonist salmeterol has been suggested to have other pharmacologic activities, that is, antiinflammatory capacities, in addition to its bronchodilator properties. We investigated the protective effect of 50 micrograms salmeterol in a placebo-controlled study on house dust mite-induced early- and late-phase reactions in 19 atopic asthmatic subjects. FEV1 and methacholine airway reactivity (AR) were measured. Eosinophils and their activation markers in peripheral blood were counted as indirect parameters of inflammation. Corrections were made for confounding of bronchodilator effects by salmeterol and the spontaneous diurnal variation, using saline inhalation as a control. Salmeterol completely inhibited the fall in FEV1 up to 10 h after the house dust mite challenge. Nevertheless, after correction, a biphasic response was present in the salmeterol group. Salmeterol protected against the allergen-associated increase in AR 3 h after the challenge, but no protection was observed after 24 h. Salmeterol did not inhibit the allergen-induced changes in total number of eosinophils and their activation markers in peripheral blood. These data suggest that a single dose of salmeterol modifies allergen-induced airway responses, above all by sustained bronchodilation.
journal_name
Am J Respir Crit Care Medauthors
Weersink EJ,Aalbers R,Koëter GH,Kauffman HF,De Monchy JG,Postma DSdoi
10.1164/ajrccm.150.5.7952550subject
Has Abstractpub_date
1994-11-01 00:00:00pages
1262-7issue
5 Pt 1eissn
1073-449Xissn
1535-4970journal_volume
150pub_type
临床试验,杂志文章abstract::Lung cancer is a significant disease with survival rates remaining poor despite numerous therapeutic advances during the last 30 years. Understanding lung cancer pathogenesis through murine modeling may improve future human therapies, and new data indicate that mutations within different endogenous stem cells situated...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,评审
doi:10.1164/rccm.200607-984PP
更新日期:2007-03-15 00:00:00
abstract::Female Fisher 344 rats (n = 25) were inoculated intrapleurally with a single 20-mg dose of (JM-100) fibrous glass. The mean length (2.2 microns) and width (0.15 microns) of the fibrous glass particles was within respirable range. Following inoculation, the rats were killed at timed intervals ranging from 2 to 430 d fr...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.150.2.8049840
更新日期:1994-08-01 00:00:00
abstract::The severity of asthma can be graded from mild intermittent to severe persistent. Airway inflammation is a feature of persistent asthma. We compared several markers of inflammation in mucosal biopsies and bronchoalveolar lavage fluid (BAL fluid) from 12 healthy control subjects, 24 patients with intermittent asthma, a...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.157.2.96-08040
更新日期:1998-02-01 00:00:00
abstract::Infection of the cystic fibrosis (CF) airways elicits an exaggerated, interleukin-8 (IL-8) mediated, neutrophil inflammatory response. Necrosing neutrophils release DNA and actin into the airways, increasing the viscoelasticity of airway secretions. Mucolytics aim to improve airway clearance by reducing this viscoelas...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.162.5.9908107
更新日期:2000-11-01 00:00:00
abstract::To elucidate the apparent contradictions in vascular remodeling in the lungs of patients with idiopathic pulmonary fibrosis, we evaluated alveolar vascularity in relation to the various degrees of fibrosis in surgically biopsied lungs of usual interstitial pneumonia. Alveolar capillary endothelial cells were intensely...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200308-1111OC
更新日期:2004-06-01 00:00:00
abstract::In a prospective study, we screened specimens from 190 mechanically ventilated patients hospitalized in a surgical intensive care unit, and from the environment to assess risks and routes of colonization/infection. Specimens from various sites were collected on admission and once a week throughout each patient's stay....
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.157.3.9702096
更新日期:1998-03-01 00:00:00
abstract::Decision analysis was used to compare three alternative strategies for a 6-mo course of treatment for tuberculosis: directly observed drug therapy (DOT), self-administered fixed-dose combination drug therapy, and self-administered conventional individual drug therapy. Estimates of effectiveness were obtained from the ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.154.4.8887600
更新日期:1996-10-01 00:00:00
abstract:RATIONALE:Plasma transfusions are frequently prescribed for critically ill children, although their indications lack a strong evidence base. Plasma transfusions are largely driven by physician conceptions of need, and these are poorly documented in pediatric intensive care patients. OBJECTIVES:To identify patient char...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1164/rccm.201503-0450OC
更新日期:2015-06-15 00:00:00
abstract:BACKGROUND:Measurements of upper airway size and shape are important in investigating the pathophysiology of obstructive sleep apnea (OSA) and in devising, applying, and determining the effectiveness of treatment modalities. We describe an endoscopic optical technique (anatomic optical coherence tomography, aOCT) that ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200507-1148OC
更新日期:2006-01-15 00:00:00
abstract::Interleukin (IL)-2 has a central role in regulating T cell responses to Mycobacterium tuberculosis. Adjunctive immunotherapy with recombinant human IL-2 was studied in a randomized, placebo-controlled, double-blinded trial in 110 human immunodeficiency virus-seronegative adults in whom smear-positive, drug-susceptible...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1164/rccm.200211-1359OC
更新日期:2003-07-15 00:00:00
abstract::Calculation of diurnal peak expiratory flow (PEF) variability using values before and after bronchodilator is no longer possible for many asthmatic patients because they now use beta-agonists "as needed" for symptoms rather than regularly. This study assesses the usefulness of a number of alternative PEF indices as ma...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.151.5.7735580
更新日期:1995-05-01 00:00:00
abstract:RATIONALE:Diesel motor exhaust is classified by the International Agency for Research on Cancer as probably carcinogenic to humans. The epidemiologic evidence is evaluated as limited because most studies lack adequate control for potential confounders and only a few studies have reported on exposure-response relationsh...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1164/rccm.201006-0940OC
更新日期:2011-04-01 00:00:00
abstract:RATIONALE:Bacterial pneumonia is a major cause of morbidity for HIV-infected persons and contributes to excess mortality in this population. OBJECTIVES:To evaluate the frequency and risk factors for occurrence of bacterial pneumonia in the present era of potent antiretroviral therapy. METHODS:We evaluated data from a...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,随机对照试验
doi:10.1164/rccm.200804-617OC
更新日期:2008-09-15 00:00:00
abstract:RATIONALE:Obstructive sleep apnea (OSA) is a highly prevalent disorder in children, in which enlarged adenotonsillar tissues (AT) play a major pathophysiologic role. Mechanisms leading to the proliferation and hypertrophy of AT in children who subsequently develop OSA remain unknown, and surgical extirpation of AT is a...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200909-1398OC
更新日期:2010-05-15 00:00:00
abstract::Airway pathology has been extensively investigated in adulthood asthma, whereas only few studies examined bronchial biopsies in childhood asthma. To evaluate the airway pathology in children with asthma, we analyzed bronchial biopsies obtained from 23 children undergoing bronchoscopy for clinical indications other tha...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200305-650OC
更新日期:2003-10-01 00:00:00
abstract:RATIONALE:In San Francisco, 70% of the tuberculosis cases occur among foreign-born persons, mainly from China, the Philippines, and Mexico. We postulate that there are differences in the characteristics and risk factors for tuberculosis among these populations. OBJECTIVES:To determine the clinical, epidemiological and...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.201212-2239OC
更新日期:2013-05-01 00:00:00
abstract:RATIONALE:Surfactant protein D (SP-D), a 43-kD collectin, is synthesized and secreted by airway epithelia as a dodecamer formed by assembly of four trimeric subunits. We have previously shown that the quaternary structure of SP-D can be altered during inflammatory lung injury through its modification by S-nitrosylation...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.201004-0654OC
更新日期:2011-04-01 00:00:00
abstract::It is controversial whether mutations in cystic fibrosis transmembrane conductance regulator intrinsically dysregulate inflammation. We characterized passage 2 human tracheobronchial epithelial cell cultures morphologically and physiologically and determined whether cytokine production or nuclear factor-kappaB activat...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200207-765OC
更新日期:2004-03-01 00:00:00
abstract::The factors that lead to increased production of specific IgG subclasses are still largely unknown. Recent studies suggest that increased IgG4 responses may be related to prolonged antigen exposure. We present data showing that increased IgG4 responses are found under conditions of chronic exposure to Aspergillus fumi...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.153.6.8665060
更新日期:1996-06-01 00:00:00
abstract::Viral-induced symptomatic respiratory infections (SRI) frequently cause exacerbations of asthma in children. This study investigated the protective effects of 0.5% nedocromil sodium nebulizer solution given three times a day in preventing asthma exacerbations associated with SRI. Ninety-three mild-moderate asthmatic c...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1164/ajrccm.152.6.8520750
更新日期:1995-12-01 00:00:00
abstract::Salbutamol inhibits neutropenia, increased airway resistance, and gas exchange abnormalities provoked by platelet-activating factor (PAF) challenge in normal persons. To further explore the intriguing dissociation between spirometric abnormalities and gas exchange defects shown in patients with asthma, we investigated...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1164/ajrccm.156.1.9610100
更新日期:1997-07-01 00:00:00
abstract::The virulence of Pseudomonas aeruginosa is partly controlled by the las quorum-sensing system. A rat model of acute pneumonia was used to investigate the pathophysiological impact of this system by comparing the virulence of the wild-type virulent laboratory strain PAO1 with that of its lasR-deleted mutant PAOR. In co...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200207-736BC
更新日期:2003-06-01 00:00:00
abstract:RATIONALE:Interferon-gamma (IFN-gamma) is of central interest in the study of tuberculosis. A number of single-gene mutations have been identified in the IFN-gamma signaling pathway that predispose to severe mycobacterial disease, but the relevance of polymorphism within these genes to the common phenotype of tuberculo...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200601-088OC
更新日期:2006-08-01 00:00:00
abstract:RATIONALE:It is hypothesized that the affective dimension of dyspnea (unpleasantness, emotional response) is not strictly dependent on the intensity of dyspnea. OBJECTIVES:We tested the hypothesis that the ratio of immediate unpleasantness (A(1)) to sensory intensity (SI) varies depending on the type of dyspnea. METH...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,随机对照试验
doi:10.1164/rccm.200711-1675OC
更新日期:2008-06-15 00:00:00
abstract:RATIONALE:The effects of prenatal cigarette smoke (CS) exposure and hypoxemia on cardiorespiratory control have been investigated in full-term infants. However, few data are available in preterm infants, who form a particularly vulnerable population, with developmentally immature cardiorespiratory control. OBJECTIVES:...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200803-432OC
更新日期:2008-09-01 00:00:00
abstract::The influx of neutrophils into the lung is a sentinel event in LPS-induced acute lung inflammation. Previous studies have shown that systemic inhibition of p38 decreases LPS-induced neutrophil influx into the alveolar space but has no effect on pulmonary parenchymal neutrophil accumulation or on microvascular leak, in...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200406-712OC
更新日期:2005-05-01 00:00:00
abstract::The safety of sputum induction and the reproducibility of measurements in induced sputum in multicenter studies is unknown. We examined the safety of sputum induction in a two-visit, six-center study in 79 subjects with moderate to severe asthma (mean +/- SD FEV(1) 71 +/- 12% predicted, 67% taking inhaled corticostero...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1164/ajrccm.163.6.9901105
更新日期:2001-05-01 00:00:00
abstract::We investigated the relationship between annual change in pulmonary function and changes in respiratory symptoms among male grain elevator workers who participated in a health surveillance program mandated by Labour Canada. The surveillance was conducted every 3 yr starting from the period 1978 to 1981. The 1,211 work...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.153.2.8564120
更新日期:1996-02-01 00:00:00
abstract::Endothelin-1 (ET-1) is a potent endogenous vasoconstrictor that was recently shown to exhibit bronchoconstrictive properties in vitro. In asthmatic patients, the expression of ET-1 peptide was also shown to be increased in endobronchial biopsies. Thus, we postulated that ET-1 could be higher in subjects with nocturnal...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.149.4.8143060
更新日期:1994-04-01 00:00:00
abstract::The severity of breathlessness at given degrees of airway obstruction varies between patients with asthma. It has been postulated that the symptoms during bronchoconstriction are determined in part by involvement of airway inflammation. We compared the severity of breathlessness at various degrees of acute airway obst...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1164/ajrccm.152.1.7599850
更新日期:1995-07-01 00:00:00