Abstract:
RATIONALE:Secondhand tobacco smoke (SHS) and traffic-related air pollutants are associated with asthma and allergy. Diesel exhaust particles (DEPs) and SHS can interact with allergens in exacerbating allergic airway diseases through generation of reactive oxygen species. Glutathione S-transferases (GSTs) metabolize reactive oxygen species and detoxify electrophilic xenobiotics present in SHS and DEPs. OBJECTIVES:We tested the hypotheses that functional GSTM1-null genotype and GSTP1 codon 105 variants (Ile105 and Val105) are determinants of allergic responses to SHS, and that responses to SHS and DEPs are correlated. METHODS AND MEASUREMENTS:In a randomized, placebo-controlled crossover trial, 19 ragweed allergen-sensitive subjects who had previously participated in a DEP trial were challenged intranasally with allergen after having been exposed to either clean air or SHS at separate visits. Nasal allergen-specific IgE, histamine, IL-4, and IFN-gamma levels were measured before and after allergen challenge. MAIN RESULTS:Individuals with GSTM1-null or GSTP1 Ile105 genotypes showed larger nasal responses to allergens with SHS compared with clean air. GSTM1-null subjects had a larger increase in IgE than GSTM1-present subjects (median, 173.3 vs. 46.7 U/ml; p = 0.03), and the Ile105 GSTP1 genotype subjects had increased histamine (median, 10.2 vs. 4.6 nM; p = 0.01) after SHS plus allergen challenge. Responses to SHS and DEPs were correlated. Enhancement of IgE and histamine was greatest in the subjects with both the GSTM1-null and GSTP1 Ile/Ile genotypes. CONCLUSIONS:GSTM1 and GSTP1 are important cytoprotective factors that reduce SHS and DEP exacerbation of allergic responses.
journal_name
Am J Respir Crit Care Medauthors
Gilliland FD,Li YF,Gong H Jr,Diaz-Sanchez Ddoi
10.1164/rccm.200509-1424OCsubject
Has Abstractpub_date
2006-12-15 00:00:00pages
1335-41issue
12eissn
1073-449Xissn
1535-4970pii
200509-1424OCjournal_volume
174pub_type
杂志文章,随机对照试验abstract::From an Aspergillus fumigatus complementary deoxyribonucleic acid (cDNA) library displayed on phage surface, an allergen formally termed rAsp f 3 was cloned. The open-reading frame of the cloned gene for the allergen encodes a protein of 168 amino acids with a predicted molecular mass of 18.5 kD, showing 36% identity ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.156.6.9702087
更新日期:1997-12-01 00:00:00
abstract::Viral respiratory tract infections are associated with an acute increase in airway responsiveness in normal subjects and patients with asthma. Airway responsiveness is also increased at least transiently in animals during acute viral infections. In this article, we discuss possible mechanisms whereby viral infections ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,评审
doi:10.1164/ajrccm.151.5.7735630
更新日期:1995-05-01 00:00:00
abstract::The plasma level of fibrinogen is felt to be an independent risk factor for vascular events. Obstructive sleep apnea (OSA) has a high prevalence in patients with stroke and may also be an independent risk factor. The aim of our study was to determine the association between OSA and plasma levels of fibrinogen in patie...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.162.6.2001048
更新日期:2000-12-01 00:00:00
abstract::Fibrosing alveolitis in systemic sclerosis is histologically identical to lone cryptogenic fibrosing alveolitis (CFA) (idiopathic pulmonary fibrosis). The inflammatory cell content of bronchoalveolar lavage (BAL) samples has been used as a guide to prognosis and treatment in CFA. In this study, the relationship was ex...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.150.2.8049830
更新日期:1994-08-01 00:00:00
abstract::Current evidence suggests that patients with obstructive sleep apnea (OSA) may have augmented pharyngeal dilator muscle activity during wakefulness, to compensate for deficient anatomy. However, the isolated effect of sleep on the activity of these muscles (comparing OSA patients with controls) has not been studied. W...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.153.6.8665050
更新日期:1996-06-01 00:00:00
abstract::In mechanically ventilated neonates, the instrumental dead space is a major determinant of total minute ventilation. By flushing this dead space, continuous tracheal gas insufflation (CTGI) may allow reduction of the risk of overinflation. We conducted a randomized trial to evaluate the efficacy of CTGI in reducing ai...
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.162.3.9910063
更新日期:2000-09-01 00:00:00
abstract::Observation of bronchus-associated lymphoid tissue (BALT) in whole lung specimens from healthy nonsmoking adults has questioned the hypothesis that BALT is not constitutively present in healthy adult human lungs. In our study, we investigated endobronchial biopsies of the second- and third-generation carinae from 44 c...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.158.2.9711012
更新日期:1998-08-01 00:00:00
abstract:RATIONALE:Although interferon (IFN)-gamma release assays are approved for the diagnosis of latent tuberculosis infection (LTBI), limited data exist regarding their performance in HIV infection. OBJECTIVES:To compare tuberculin skin test (TST) results to the commercial IFN-gamma release assay QuantiFERON-TB Gold In-Tub...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章
doi:10.1164/rccm.200608-1088OC
更新日期:2007-04-01 00:00:00
abstract::Keratinocyte growth factor (KGF) induces transient proliferation of alveolar type II cells (AEII) associated with surfactant alterations. To test the hypothesis that homeostasis of intracellular phospholipid stores is maintained under KGF-induced hyperplasia, we (1) collected tissue from adult rat lungs, fixed for lig...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200112-132OC
更新日期:2003-05-01 00:00:00
abstract::Small airway disease is thought to contribute significantly to functional impairment caused by asthma. Functional evidence of airway-parenchyma uncoupling in asthma, such as loss of deep breath bronchodilator effect in bronchoconstrictive episodes and enhanced airway closure, has been previously demonstrated. Elastic ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200403-305OC
更新日期:2004-10-15 00:00:00
abstract:RATIONALE:Inhaled corticosteroids are commonly prescribed to patients with chronic obstructive pulmonary disease (COPD). OBJECTIVES:To examine whether these medications might be associated with an excess risk of pneumonia. METHODS:We conducted a nested case-control study within a cohort of patients with COPD from Que...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200611-1630OC
更新日期:2007-07-15 00:00:00
abstract::Previous studies suggest that lung function tests using monodisperse aerosols can help to identify early stages of lung diseases. We investigated intrapulmonary particle loss and aerosol bolus dispersion-a marker of convective gas transport-in 32 women with asymptomatic nonspecific bronchial hyperresponsiveness (BHR) ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.159.3.9805036
更新日期:1999-03-01 00:00:00
abstract::Airway inflammation is involved in the pathogenesis of bronchial asthma. Intercellular adhesion molecule-1 (ICAM-1) is a ligand for lymphocyte function-associated antigen-1 alpha (LFA-1 alpha) and has been shown to be required for leukocyte migration into inflamed area. The purpose of this report was to investigate th...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm/151.4.1244
更新日期:1995-04-01 00:00:00
abstract::Wheezing in childhood is not a single disorder and different wheezing-associated respiratory illnesses have been recently described. We investigated the association between wheezing conditions and familial, pre-, peri-, and postnatal risk factors. We studied 16,333 children, 6 to 7 yr old, enrolled in a population-bas...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,多中心研究
doi:10.1164/ajrccm.160.5.9811002
更新日期:1999-11-01 00:00:00
abstract::Previous studies reported linkage between maternally inherited atopy and the beta subunit of the high affinity IgE receptor (Fc epsilon RI-beta) located on chromosome 11q13. We have investigated 45 Italian families with atopic asthmatic children, for a total of 213 subjects, including 148 patients. Genotyping was carr...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.153.5.8630620
更新日期:1996-05-01 00:00:00
abstract::POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) syndrome is a rare variant of plasma cell dyscrasia with multiple systemic manifestations. We followed the progress of 20 patients with POEMS syndrome in our institution over a 10-yr period. Pulmonary hypertension (PH) was ob...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.157.3.9707095
更新日期:1998-03-01 00:00:00
abstract:RATIONALE:Recent cohort studies in chronic obstructive pulmonary disease (COPD) have questioned the validity of previously reported associations between inhaled corticosteroids (ICS) and reductions in mortality and rehospitalization in observational studies. Using time-dependent versions of statistical survival models,...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200502-210OC
更新日期:2005-08-15 00:00:00
abstract::Sarcoidosis is a systemic, granulomatous disorder with a high rate of spontaneous remission indicating the presence of antiinflammatory mechanisms. Antiinflammatory mediators such as interleukin-10 (IL-10) and transforming growth factor-beta (TGF-beta) should be able to induce spontaneous remission of sarcoidosis. By ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 临床试验,杂志文章
doi:10.1164/ajrccm.154.3.8810610
更新日期:1996-09-01 00:00:00
abstract::We described here an original device for laser Doppler (LD) flowmetry measurements of gastric mucosal perfusion, which was used here in healthy volunteers. A modified nasogastric tube containing the LD probe was inserted. Aspiration via a catheter, fixed in parallel to the probe, held the probe against the gastric wal...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.154.6.8970350
更新日期:1996-12-01 00:00:00
abstract::To determine the status of activation of lymphocytes and the role of cytokines on the inflammatory response of the bronchial mucosa in toluene diisocyanate (TDI) asthma, we performed a quantitative analysis of bronchial biopsies obtained from 15 subjects with TDI-induced asthma and seven normal control subjects. Marke...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.151.3.7533600
更新日期:1995-03-01 00:00:00
abstract:RATIONALE:The relative contribution of body proportion and social exposures to ethnic differences in lung function has not previously been reported in the United Kingdom. OBJECTIVES:To examine ethnic differences in lung function in relation to anthropometry and social and psychosocial factors in early adolescence. ME...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200706-867OC
更新日期:2008-06-01 00:00:00
abstract:RATIONALE:Increased thickness of the airway smooth muscle (ASM) layer in asthma may result from hyperplasia or hypertrophy of muscle cells or increased extracellular matrix (ECM). OBJECTIVES:To relate ASM hypertrophy, ASM hyperplasia, and deposition of ECM to the severity and duration of asthma. METHODS:Airways from ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.201110-1849OC
更新日期:2012-05-15 00:00:00
abstract:RATIONALE:The temporal stability of adult asthma phenotypes identified using clustering methods has never been addressed. Longitudinal cluster-based methods may provide novel insights in the study of the natural history of asthma. OBJECTIVES:To compare the stability of cluster-based asthma phenotype structures a decad...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.201301-0156OC
更新日期:2013-09-01 00:00:00
abstract::To determine the relative contribution of ectopic calcitonin (CT) production versus nonectopic secretion of CT in patients with small cell lung cancer (SCLC), serum and urine immunoreactive CT (iCT) levels of 86 different subjects were measured by radioimmunoassay (RIA) using two polyclonal antisera (Ab3b and Ab4). Th...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.149.1.8111580
更新日期:1994-01-01 00:00:00
abstract::A major cause of morbidity and mortality following lung transplantation is posttransplant lymphoproliferative disease (PTLD). In a retrospective cohort analysis of pediatric patients, we evaluated the risk factors associated with PTLD in 128 first-time lung transplant recipients from 1990 to 1997. The greatest risk fa...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.161.4.9901013
更新日期:2000-04-01 00:00:00
abstract::Little is known about the structural response of the diaphragm to controlled mechanical ventilation. We examined effects of this intervention on muscle mass, myosin heavy chain isoforms, and contractile function in the rat diaphragm. Animals were mechanically ventilated for up to 4 days, and comparisons were made with...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.2202020
更新日期:2002-10-15 00:00:00
abstract::Sarcoidosis is a systemic granulomatous disease of unknown etiology that primarily affects the lungs. The etiology remains unclear; however, environmental, genetic, ethnic, and familial factors probably modify expression of the disease. As an example, African Americans are at greater risk of mortality and morbidity th...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章,评审
doi:10.1164/rccm.200308-1073WS
更新日期:2004-09-01 00:00:00
abstract::To gain insight into the source of exhaled nitric oxide (NO) in normal humans, we examined the effects of respiratory pattern on the concentration of NO in exhaled air while subjects were wearing a noseclip and then under endotracheal intubation, using a specially designed gas sampling system to separate exhaled air i...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.154.5.8912750
更新日期:1996-11-01 00:00:00
abstract::To better understand strategies for recruiting and maintaining lung volume in acute lung injury, we examined relationships between steady-state lung volume and cumulative cyclic recruitment/derecruitment volume history and the quasi-static pressure-volume curve, in an animal saline lavage lung injury model. Small-volu...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/rccm.200305-614OC
更新日期:2004-04-15 00:00:00
abstract::Humans exhibit an acute inflammatory response in the lungs after controlled laboratory exposure to ozone. The present study was designed to test whether biomarkers of inflammation are detectable in humans exposed to ozone and associated copollutants under natural conditions outdoors. Bronchoscopy with bronchoalveolar ...
journal_title:American journal of respiratory and critical care medicine
pub_type: 杂志文章
doi:10.1164/ajrccm.154.5.8912760
更新日期:1996-11-01 00:00:00