Inhomogeneities of ventilation and the diffusing capacity to perfusion in various chronic lung diseases.

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

authors： Boudier A,Curjuric I,Basagaña X,Hazgui H,Anto JM,Bousquet J,Bridevaux PO,Dupuis-Lozeron E,Garcia-Aymerich J,Heinrich J,Janson C,Künzli N,Leynaert B,de Marco R,Rochat T,Schindler C,Varraso R,Pin I,Probst-Hensch N,Sun

更新日期：2013-09-01 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

authors： Vignola AM,Chanez P,Campbell AM,Souques F,Lebel B,Enander I,Bousquet J

更新日期：1998-02-01 00:00:00

abstract：:Rationale: Chronic obstructive pulmonary disease (COPD) has been associated with numerous genetic variants, yet the extent to which its genetic risk is mediated by variation in lung structure remains unknown.Objectives: To characterize associations between a genetic risk score (GRS) associated with COPD susceptibility...

journal_title：American journal of respiratory and critical care medicine

authors： Oelsner EC,Ortega VE,Smith BM,Nguyen JN,Manichaikul AW,Hoffman EA,Guo X,Taylor KD,Woodruff PG,Couper DJ,Hansel NN,Martinez FJ,Paine R 3rd,Han MK,Cooper C,Dransfield MT,Criner G,Krishnan JA,Bowler R,Bleecker ER,Pet

更新日期：2019-09-15 00:00:00

abstract：:Airway smooth muscle (ASM) accumulation and enrichment of the extracellular matrix (ECM) with type I collagen and fibronectin are major pathologic features of airway remodeling in asthma. These ECM components confer enhanced ASM proliferation in vitro, but a requirement for specific integrin ECM receptors has not been...

journal_title：American journal of respiratory and critical care medicine

authors： Nguyen TT,Ward JP,Hirst SJ

更新日期：2005-02-01 00:00:00

abstract：:Morphologic changes in pulmonary muscular arteries may modify the mechanisms that regulate the pulmonary vascular tone and contribute to maintaining an adequate ventilation-perfusion (VA/Q) matching in patients with chronic obstructive pulmonary disease (COPD). To analyze the relationships between the abnormalities of...

journal_title：American journal of respiratory and critical care medicine

authors： Barberà JA,Riverola A,Roca J,Ramirez J,Wagner PD,Ros D,Wiggs BR,Rodriguez-Roisin R

更新日期：1994-02-01 00:00:00

abstract：:The purpose of this study was to describe the nature of diaphragm injury, to quantify the injury and number of macrophages at the light microscopic level, and to determine their association with airflow obstruction in humans. Partial-thickness diaphragm biopsies were obtained from 21 subjects going for thoracotomy sur...

journal_title：American journal of respiratory and critical care medicine

authors： Macgowan NA,Evans KG,Road JD,Reid WD

更新日期：2001-06-01 00:00:00

abstract：:We enrolled nine allergic subjects in a double blind, placebo-controlled study to examine the effect of premedication with 0.6 mg of atropine on nasal antigen challenge. The challenge consisted of unilaterally stimulating the nasal septum with diluent followed by three increasing doses of antigen and recording respons...

journal_title：American journal of respiratory and critical care medicine

authors： Baroody FM,Ford S,Lichtenstein LM,Kagey-Sobotka A,Naclerio RM

更新日期：1994-06-01 00:00:00

abstract：:The relationship of sleep-disordered breathing (SOB) to neuropsychological deficits was investigated with cross-sectional data from the Wisconsin Sleep Cohort Study, a population-based study of the natural history of SDB. A sample of 841 employed men and women ages 30 to 60 yr was studied by overnight polysomnography ...

journal_title：American journal of respiratory and critical care medicine

authors： Kim HC,Young T,Matthews CG,Weber SM,Woodward AR,Palta M

更新日期：1997-12-01 00:00:00

abstract：:The development of sensitization to inhaled allergens is determined by the interaction of multiple genetic and environmental influences. Occupational sensitization to low-molecular-weight chemicals allows a specific immunological response to an inhaled hapten to be studied in a well-defined population with characteriz...

journal_title：American journal of respiratory and critical care medicine

authors： Newman Taylor AJ,Cullinan P,Lympany PA,Harris JM,Dowdeswell RJ,du Bois RM

更新日期：1999-08-01 00:00:00

abstract：:On the basis of studies with animal models, the gene for the low-affinity receptor for immunoglobulin E (IgE) (FCER2, CD23) has been implicated as a candidate for IgE-mediated allergic diseases and bronchial hyperreactivity, or related traits. Given evidence for genetic complexity in atopic disorders, we sought to stu...

journal_title：American journal of respiratory and critical care medicine

authors： Laitinen T,Ollikainen V,Lázaro C,Kauppi P,de Cid R,Antó JM,Estivill X,Lokki H,Mannila H,Laitinen LA,Kere J

更新日期：2000-03-01 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

authors： Johnson JL,Ssekasanvu E,Okwera A,Mayanja H,Hirsch CS,Nakibali JG,Jankus DD,Eisenach KD,Boom WH,Ellner JJ,Mugerwa RD,Uganda-Case Western Reserve University Research Collaboration.

更新日期：2003-07-15 00:00:00

abstract：:Damage to the airway epithelium is one prominent feature of chronic asthma. Corticosteroids induce apoptosis in inflammatory cells, which in part explains their ability to suppress airway inflammation. However, corticosteroid therapy does not necessarily reverse epithelial damage. We hypothesized that corticosteroids ...

journal_title：American journal of respiratory and critical care medicine

authors： Dorscheid DR,Wojcik KR,Sun S,Marroquin B,White SR

更新日期：2001-11-15 00:00:00

abstract：:Alveolar epithelial type II cells (AET2) respond with exocytosis of surfactant containing lamellar bodies to stimulation with mechanical stretch and secretagogues, a process that is fundamental for maintaining alveolar stability and lung gas exchange. In the present study in cultured rat AET2, we employed botulinum C2...

journal_title：American journal of respiratory and critical care medicine

authors： Rose F,Kürth-Landwehr C,Sibelius U,Reuner KH,Aktories K,Seeger W,Grimminger F

更新日期：1999-01-01 00:00:00

abstract：RATIONALE:Susceptibility to tuberculosis is not only determined by Mycobacterium tuberculosis infection, but also by the genetic component of the host. The pleiotropic cytokine tumor necrosis factor-alpha is essential to control tuberculosis infection, and various tumor necrosis factor family members and their respecti...

journal_title：American journal of respiratory and critical care medicine

authors： Möller M,Flachsbart F,Till A,Thye T,Horstmann RD,Meyer CG,Osei I,van Helden PD,Hoal EG,Schreiber S,Nebel A,Franke A

更新日期：2010-02-15 00:00:00

abstract：:The recruitment of leukocytes to an area of injury or inflammation site is one of the most fundamental host defenses. Pulmonary tuberculosis is characterized by granulomatous inflammation with an extensive infiltration of mononuclear cells. In tuberculous pleurisy pleural mesothelial cells are exposed to mycobacteria ...

journal_title：American journal of respiratory and critical care medicine

authors： Mohammed KA,Nasreen N,Ward MJ,Antony VB

更新日期：1999-05-01 00:00:00

abstract：:Products of the prostaglandin H synthase (PGHS) metabolic pathway are thought to play a role in the pathogenesis of asthma. We determined the level of expression of the constitutive (PGHS-1) and inducible (PGHS-2) isoforms of the enzyme in induced sputum and bronchial biopsies of patients with asthma, patients with ch...

journal_title：American journal of respiratory and critical care medicine

authors： Taha R,Olivenstein R,Utsumi T,Ernst P,Barnes PJ,Rodger IW,Giaid A

更新日期：2000-02-01 00:00:00

abstract：:During Operation Everest III (Comex '97), to assess the consequences of altitude-induced hypoxia, eight volunteers were decompressed in a hypobaric chamber, with a decompression profile simulating the climb of Mount Everest. Cardiac function was assessed using a combination of M-mode and two-dimensional echocardiograp...

journal_title：American journal of respiratory and critical care medicine

authors： Boussuges A,Molenat F,Burnet H,Cauchy E,Gardette B,Sainty JM,Jammes Y,Richalet JP

更新日期：2000-01-01 00:00:00

abstract：:To quantify changes in tissue oxygenation of pathologic lungs, we applied a novel method using near-infrared spectroscopy (NIRs). In in vitro experiments, we assayed the effect of photon scattering on the absorption spectra of an in vitro system simulating structures of lung, which consists of test tube containing air...

journal_title：American journal of respiratory and critical care medicine

authors： Noriyuki T,Ohdan H,Yoshioka S,Miyata Y,Asahara T,Dohi K

更新日期：1997-11-01 00:00:00

abstract：:To investigate interactions between the endothelium and leukocytes in patients with sepsis, we measured soluble adhesion molecules (sE-selectin and sICAM-1), von Willebrand factor antigen (vWf:Ag), myeloperoxidase (MPO), and lactoferrin (Lacto-f) as plasma markers of endothelial and neutrophil activation. We tested wh...

journal_title：American journal of respiratory and critical care medicine

authors： Kayal S,Jaïs JP,Aguini N,Chaudière J,Labrousse J

更新日期：1998-03-01 00:00:00

abstract：RATIONALE:Airway remodeling is an important feature of chronic asthma that causes irreversible airflow obstruction. Although asthma is considered to be a Th2 disease, the role of T-bet and GATA-3, the key transcription factors for differentiation toward Th1 and Th2 cells, in the pathogenesis of airway remodeling is poo...

journal_title：American journal of respiratory and critical care medicine

authors： Kiwamoto T,Ishii Y,Morishima Y,Yoh K,Maeda A,Ishizaki K,Iizuka T,Hegab AE,Matsuno Y,Homma S,Nomura A,Sakamoto T,Takahashi S,Sekizawa K

更新日期：2006-07-15 00:00:00

abstract：:Reduced diaphragm contractility has been described in normal subjects after whole body endurance exercise, and it indicates low frequency fatigue (LFF); it is unknown whether LFF is of clinical importance. We therefore studied the effect of treadmill exercise to exhaustion on diaphragm contractility in six patients wi...

journal_title：American journal of respiratory and critical care medicine

authors： Polkey MI,Kyroussis D,Keilty SE,Hamnegard CH,Mills GH,Green M,Moxham J

更新日期：1995-09-01 00:00:00

abstract：RATIONALE:Obesity, especially truncal obesity, is a risk factor for asthma incidence, prevalence, and severity. Chitinase 3-like-1 (Chi3l1) is an evolutionarily conserved moiety that plays a critical role in antipathogen and Th2 responses. However, the mechanisms that underlie the association between asthma and obesity...

journal_title：American journal of respiratory and critical care medicine

authors： Ahangari F,Sood A,Ma B,Takyar S,Schuyler M,Qualls C,Dela Cruz CS,Chupp GL,Lee CG,Elias JA

更新日期：2015-04-01 00:00:00

abstract：:We examined endotoxin exposure and wheezing episodes during the first year of life in a birth cohort of 499 infants with one or both parents having a history of asthma or allergy. We measured endotoxin in settled dust from the baby's bed, bedroom floor, family room, and kitchen floor within the first 3 mo after birth....

journal_title：American journal of respiratory and critical care medicine

authors： Park JH,Gold DR,Spiegelman DL,Burge HA,Milton DK

更新日期：2001-02-01 00:00:00

abstract：:In order to determine the long-term sequelae of prune belly syndrome (PBS) and whether the absence of abdominal wall musculature impairs exercise performance we studied nine patients 6 to 31 yr of age with PBS. Conventional spirometry, lung volumes, DLCO, and respiratory muscle strength were measured. A progressive 1-...

journal_title：American journal of respiratory and critical care medicine

authors： Ewig JM,Griscom NT,Wohl ME

更新日期：1996-04-01 00:00:00

abstract：:Lymphocyte migration from the blood into the lung has been suggested as being responsible for the increase of lymphocytes, in particular CD4 T cells, in the bronchoalveolar lavage (BAL) and bronchial mucosa in human asthma, but so far there has been no direct proof. We studied lymphocyte immigration and lymphocyte sub...

journal_title：American journal of respiratory and critical care medicine

authors： Schuster M,Tschernig T,Krug N,Pabst R

更新日期：2000-02-01 00:00:00

abstract：RATIONALE:Improved ventilation strategies have been the mainstay for reducing mortality in acute respiratory distress syndrome. Their unique clinical effectiveness is, however, unmatched by our understanding of the underlying mechanobiology, and their impact on alveolar dynamics and gas exchange remains largely specula...

journal_title：American journal of respiratory and critical care medicine

authors： Tabuchi A,Nickles HT,Kim M,Semple JW,Koch E,Brochard L,Slutsky AS,Pries AR,Kuebler WM

更新日期：2016-02-15 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

authors： Mauad T,Silva LF,Santos MA,Grinberg L,Bernardi FD,Martins MA,Saldiva PH,Dolhnikoff M

更新日期：2004-10-15 00:00:00

abstract：:Central airway obstruction is a problem facing all medical and surgical subspecialists caring for patients with chest diseases. The incidence of this disorder appears to be rising because of the epidemic of lung cancer; however, benign causes of central airway obstruction are being seen more frequently as well. The mo...

journal_title：American journal of respiratory and critical care medicine

authors： Ernst A,Feller-Kopman D,Becker HD,Mehta AC

更新日期：2004-06-15 00:00:00

abstract：:Lone cryptogenic fibrosing alveolitis (CFA) is a progressive interstitial lung disease, with a median survival of 3 to 6 yr from the onset of dyspnea. CFA can be subdivided into prognostically significant histopathologic patterns, including nonspecific interstitial pneumonia (NSIP). We reviewed 78 patients with a clin...

journal_title：American journal of respiratory and critical care medicine

authors： Nicholson AG,Colby TV,du Bois RM,Hansell DM,Wells AU

更新日期：2000-12-01 00:00:00

abstract：:Knowledge of the local and regional doses of inhaled particulates is crucial for inhalation therapy and for understanding the progression of pulmonary disease. We studied the deposition pattern of radioactively tagged particles in rats with chronic bronchitis. Rats were exposed to sulfur dioxide (SO2; 236 +/- 14 ppm) ...

journal_title：American journal of respiratory and critical care medicine

authors： Sweeney TD,Skornik WA,Brain JD,Hatch V,Godleski JJ

更新日期：1995-02-01 00:00:00