Abstract:
:The imbalance between oxidants and antioxidants is known to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Cigarette smoking is the most frequent factor responsible for development of COPD by leading to oxidant overload in the lower airways, due to presence of its own oxidants and to recruitment and activation of pulmonary phagocytes. We aimed to determine whether (1) patients with stable COPD have higher thiobarbituric acid-reactive substances (TBARs, an end-product of lipid peroxidation) and H2O2 levels in expired breath condensate than healthy subjects who have never smoked; (2) COPD subjects who are current smokers exhale more TBARs and H2O2 than COPD ex-smokers and those who have never smoked; and (3) concentration of TBARs correlates with H2O2 levels in the breath condensate of COPD patients. The TBAR and H2O2 content in expired breath condensate of 17 healthy nonsmoking subjects and 44 patients (11 current smokers, 20 ex-smokers and 13 who had never smoked) with stable COPD [forced expiratory volume in 1 s (FEV1) 63.3 +/- 16.3% and FEV1 reversibility 5.2 +/- 4.3% predicted value] was measured spectrofluorimetrically by the thiobarbituric acid and homovanillic acid methods, respectively. The mean concentrations of TBARs and H2O2 in the expired breath condensate of COPD subjects were 12 (0.48-0.86 microM vs. 0.04 +/- 0.14 microM; P < 0.05) and 10 times (0.48 +/- 0.67 microM vs. 0.05 +/- 0.07 microM; P < 0.005) higher than in healthy controls. Current smokers with COPD did not exhale more H2O2 than COPD ex-smokers and those who had never smoked. TBARs levels shared only a tendency to be higher in the breath condensate of smoking COPD subjects than in that of ex-smokers (0.92 +/- 1.49 microM vs. 0.35 +/- 0.44 microM) and of COPD subjects who had never smoked (0.92 +/- 1.49 microM vs. 0.30 +/- 0.53 microM). No correlation was found between TBAR and H2O2 levels in the whole COPD group. These variables did not correlate with cigarette smoking status and the time from smoking cessation. Subjects with stable COPD exhibit increased lipid peroxidation and H2O2 generation in the airways. Current cigarette smoking does not distinguish COPD subjects with respect to TBARs and H2O2 exhalation.
journal_name
Respir Medjournal_title
Respiratory medicineauthors
Nowak D,Kasielski M,Antczak A,Pietras T,Bialasiewicz Pdoi
10.1053/rmed.1999.0574subject
Has Abstractpub_date
1999-06-01 00:00:00pages
389-96issue
6eissn
0954-6111issn
1532-3064pii
S0954-6111(99)90574-7journal_volume
93pub_type
杂志文章abstract::Ten patients (two male) suffering from acute exacerbations of long-standing chronic obstructive pulmonary disease and admitted in hypoxic, hypercapnic respiratory failure were treated with Nasal Intermittent Positive Pressure Ventilation (NIPPV) plus supplemental oxygen, on a general medical ward. The median (range) p...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/0954-6111(93)90054-4
更新日期:1993-07-01 00:00:00
abstract::Few recent comparative data exist on smoking habits in the Middle East and North Africa (MENA) region. The objective of this analysis was to evaluate smoking patterns in a large general population sample of individuals aged ≥ 40 years in ten countries in the region (Algeria, Egypt, Jordan, Lebanon, Morocco, Saudi Arab...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/S0954-6111(12)70011-2
更新日期:2012-12-01 00:00:00
abstract::Inhalation of dust in swine confinement buildings causes airway inflammation and systemic symptoms. The proinflammatory cytokines interleukin-6 (IL-6) and tumour necrosis factor-alpha (TNF-alpha) increase in bronchoalveolar and nasal lavage fluid, and in serum. The aim of this investigation was to study changes in the...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/s0954-6111(98)90349-3
更新日期:1998-08-01 00:00:00
abstract::Patients with COPD are at risk for other comorbid diseases, like heart failure, coronary heart disease, and depression. However, little is known about COPD phenotypes and prevalence of sub-clinical renal failure. 433 COPD patients and 233 subjects without COPD, from Western Norway, age 40-75, GOLD stage II-IV, were ex...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2011.10.004
更新日期:2012-03-01 00:00:00
abstract::Systemic inflammation may be present in patients with chronic obstructive pulmonary disease (COPD). Exercise is known to elicit an inflammatory response. We hypothesized that the systemic inflammatory response to exercise might be exaggerated in COPD patients compared to healthy subjects. Sixteen COPD patients and 11 ...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2005.03.028
更新日期:2005-12-01 00:00:00
abstract::This retrospective study reviews the patterns of P. cepacia pulmonary infection in 75 of a total of 872 mainly adults with cystic fibrosis, registered here during the 4 years 1987-1990; 35 (47%) were female. During this period, 55 patients acquired P. cepacia and the annual incidence and prevalence rates have remained...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/0954-6111(93)90090-m
更新日期:1993-04-01 00:00:00
abstract:BACKGOUND AND OBJECTIVES:The disadvantages of custom-made mandibular advancement devices (MAD) for obstructive sleep apnoea (OSA) therapy are the cost and delay required to manufacture the device. This study aimed to evaluate the efficacy of a titrable, thermoplastic MAD compared to a custom-made MAD for OSA therapy. ...
journal_title:Respiratory medicine
pub_type: 临床试验,杂志文章
doi:10.1016/j.rmed.2017.08.004
更新日期:2017-10-01 00:00:00
abstract:BACKGROUND:Sarcoidosis is characterised by a T-lymphocytic alveolitis with a typically increased T4/T8 ratio. The diagnostic value of this ratio is under debate. AIM OF THE WORK:We prospectively evaluated the influence of BAL pre-lavage and the impact of bronchial contamination on BAL differential cell count in 108 BA...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2006.11.027
更新日期:2007-09-01 00:00:00
abstract::The Spacehaler is a new, compact, pressurized aerosol device that uses the same canister as a conventional metered-dose inhaler (MDI). Its design, however, reduces the velocity of the aerosol cloud that emerges from the inhaler, thereby reducing the amount of the non-respirable fraction of the drug delivered to the pa...
journal_title:Respiratory medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0954-6111(97)90035-4
更新日期:1997-05-01 00:00:00
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journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2006.06.014
更新日期:2007-03-01 00:00:00
abstract:BACKGROUND:Patients with severe or very severe chronic obstructive pulmonary disease (COPD) frequently suffer repeated exacerbations generating high health care utilization costs. Combined corticosteroid and bronchodilator treatment using a single inhaler might - via improved compliance - reduce exacerbation rates. OB...
journal_title:Respiratory medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.rmed.2012.12.020
更新日期:2013-04-01 00:00:00
abstract:INTRODUCTION:The duration of bronchodilator action of the long-acting beta agonist salmeterol when administered in the evening has not been investigated. In this study we have investigated whether a single evening dose of salmeterol, administered from the combination salmeterol/fluticasone (SFC) Accuhaler significantly...
journal_title:Respiratory medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/j.rmed.2004.10.001
更新日期:2005-05-01 00:00:00
abstract:BACKGROUND:An Expert Forum was held at the 2014 European Respiratory Society International Congress to address issues involved in the management of Pseudomonas aeruginosa infection in patients with non-cystic fibrosis bronchiectasis (NCFB). Multiple studies have found that chronic P. aeruginosa infection is associated ...
journal_title:Respiratory medicine
pub_type: 杂志文章,评审
doi:10.1016/j.rmed.2016.06.007
更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:Reduction in 30-day readmission rate after chronic obstructive pulmonary disease (COPD)-related hospitalization is a national objective. However, little is known about trends in readmission rates in recent years, particularly in priority populations defined by the Agency for Healthcare Research and Quality (...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2017.07.058
更新日期:2017-09-01 00:00:00
abstract:STUDY OBJECTIVE:Two modes of noninvasive home mechanical ventilation (NIHMV) with volumetric ventilators were compared in patients with chronic respiratory failure. DESIGN:Retrospective, parallel-group, comparative study. SETTING:Third-level teaching Hospital in Barcelona (Spain). PATIENTS AND METHODS:We studied 110...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2005.08.008
更新日期:2006-04-01 00:00:00
abstract::Haemodynamic studies at rest and during exercise together with radionuclide ventriculography, pulmonary function and clinical well-being assessment were evaluated in ten patients with COPD and secondary pulmonary hypertension (mean PAP 25 mm Hg), before and after 6 months therapy with pirbuterol 20 mg thrice daily. De...
journal_title:Respiratory medicine
pub_type: 临床试验,杂志文章
doi:10.1016/s0954-6111(89)80061-7
更新日期:1989-01-01 00:00:00
abstract::Oxygen therapy for use in the home can be prescribed in two forms: oxygen concentrators are used to provide long term domiciliary oxygen therapy (LTOT), and oxygen cylinders are used to provide oxygen intermittently for relief of symptoms. In this study prescription and usage of oxygen cylinders in the home were asses...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/s0954-6111(05)80201-x
更新日期:1994-11-01 00:00:00
abstract::Gemcitabine is a newer pyrimidine analog used for the treatment of solid tumors. Though generally considered safe, it can cause pulmonary toxicity, which is generally mild and reversible. The purpose of this publication is to document a case of adult respiratory distress syndrome (ARDS) caused by Gemcitabine administr...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2005.08.002
更新日期:2006-04-01 00:00:00
abstract::Inhalation of organic dust from a swine-confinement building leads to an intense inflammatory reaction with an increased number of inflammatory cells and mediators in the upper and lower respiratory tract of previously unexposed subjects. In vitro the dust induces cytokine release from epithelial cells and alveolar ma...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1053/rmed.2002.1415
更新日期:2003-01-01 00:00:00
abstract::In high-school students, prevalence of smoking is high but few studies analyzed smoking in the student population according to nicotine content of smoked cigarettes and gender. We analyzed the responses to a questionnaire, including the modified Fagerström Tolerance Questionnaire (FTQ), administered to 555 students (3...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2005.02.006
更新日期:2005-08-01 00:00:00
abstract::Seventy-seven patients with morbid obesity, body mass index (BMI) 40-69.9 kg m(-2), who were candidates for gastroplasty, were studied in our laboratory as part of a pre-operative survey. They had no complaints other than obesity and were not cyanotic. A group of 28 lean subjects (BMI 20-29.8 kg m(-2)) who were candid...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1053/rmed.2001.1035
更新日期:2001-04-01 00:00:00
abstract:OBJECTIVE:to describe the clinical manifestations and survival of patients with ILD and myositis-specific and associated autoantibodies, and to evaluate the performance of the new ATS/ERS classification criteria for IPAF. PATIENTS AND METHODS:Patients with ILD and positive in at least one of the following autoantibodi...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2016.12.014
更新日期:2017-02-01 00:00:00
abstract:BACKGROUND:Although respiratory muscle weakness (RMW) is known to predict prognosis in patients with heart failure with reduced ejection fraction (HFrEF), RMW prevalence and its prognosis in those with preserved ejection fraction (HFpEF) remain unknown. We aimed to investigate whether the RMW predicted mortality in HFp...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2019.105834
更新日期:2020-01-01 00:00:00
abstract:AIM:To examine tobacco use among teenagers, identify factors related to tobacco use, as well as evaluate the outcome of a smoking prevention program. METHODS:From age 7/8 to 14/15, annual questionnaires about asthma and allergy have been completed in the OLIN paediatric study in Northern Sweden. From 12/13 years, ques...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2006.07.001
更新日期:2007-03-01 00:00:00
abstract:OBJECTIVE:To investigate the usefulness of a self-reported respiratory health transition question over 10 years through reliability, ability to capture long-term asthma trajectory and predictive ability. SETTINGS:In two 20-year cohorts (Asthma-E3N, n = 16,371, 61-88 years; EGEA, n = 1254, 27-82 years), perceived 10-ye...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2014.11.010
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND AND AIM:Vocal Cord Dysfunction (VCD) and chronic cough (CC) are challenging conditions which lead to significant quality of life impairment. The underlying mechanisms are poorly understood, but laryngeal dysfunction may be common to both conditions. The aim of this study was to determine the characteristics ...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2020.105990
更新日期:2020-07-01 00:00:00
abstract::Turbuhaler has a very high resistance hence patient inhalation flow when using it would be low. The total emitted dose (TED) of 500microg terbutaline sulphate from a Bricanyl Turbuhaler was determined using a range of inhalation flows (10-60L min(-1)) with inhalation volume of 2 and 4L using a DPI sampling apparatus a...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2009.11.014
更新日期:2010-05-01 00:00:00
abstract::Several epidemiological studies have indicated that building dampness affects the respiratory health of the inhabitants. In this study we investigated the relationship between building dampness and respiratory symptoms in young Swedish adults. In 1993, as a part of the European Community Respiratory Health Survey stag...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1053/rmed.2002.1389
更新日期:2003-04-01 00:00:00
abstract:BACKGROUND:Diagnosing asthma cannot be always easy. It is important to consider the validity of the diagnostic tests, and/or how much more commonly they are positive in patients with asthma compared to healthy subjects and, particularly, to patients with asthma-like symptoms. OBJECTIVE:To evaluate the validity of diag...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1016/j.rmed.2007.01.014
更新日期:2007-07-01 00:00:00
abstract::Induced sputum and bronchoalveolar lavage (BAL) are widely used for retrieving cells and soluble materials for studies of airway inflammation. Centrifuged cell samples are suitable for immunochemical identification of cellular products. The aim was to determine the optimal fixation procedure to detect intracellular an...
journal_title:Respiratory medicine
pub_type: 杂志文章
doi:10.1053/rmed.2002.1373
更新日期:2002-11-01 00:00:00