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American Journal of Respiratory and Critical Care Medicine

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https://www.readbyqxmd.com/read/27925796/a-severe-asthma-disease-signature-from-gene-expression-profiling-of-peripheral-blood-from-u-biopred-cohorts
#1
Jeannette Bigler, Michael Boedigheimer, James P R Schofield, Paul J Skipp, Julie Corfield, Anthony Rowe, Ana R Sousa, Martin Timour, Lori Twehues, Xuguang Hu, Graham Roberts, Andrew A Welcher, Wen Yu, Kian F Chung, Ian M Adcock, Peter J Sterk, Ratko Djukanović
RATIONALE: Stratification of asthma at the molecular level, especially using accessible biospecimens, could greatly enable patient selection for targeted therapy. OBJECTIVES: To determine the value of blood to identify transcriptional differences between clinically defined asthmatic and non-asthmatic groups, identify potential patient subgroups based on gene expression, and explore biological pathways associated with identified differences. METHODS: Transcriptomics profiles were generated by microarray analysis of blood from 610 asthmatic and control participants in U-BIOPRED...
December 7, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27925760/sequelae-of-donor-derived-mollicute-transmission-in-lung-recipients
#2
Ramiro Fernandez, Monica Chi, Michael G Ison, Ken B Waites, Donna M Crabb, Amy E Ratliff, Hector Cajigas, Malcolm M DeCamp, David Odell, G R Scott Budinger, Ankit Bharat
No abstract text is available yet for this article.
December 7, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27925465/bronchial-dieulafoy-lesion-a-20-year-history-of-unexplained-hemoptysis
#3
Savvas Hadjiphilippou, Pallav L Shah, Alexandra Rice, Simon Padley, Matthew Hind
No abstract text is available yet for this article.
December 7, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27922751/new-therapies-for-asthma-and-copd
#4
Nicholas J Gross, Peter J Barnes
Asthma and COPD (chronic obstructive pulmonary disease) are two common diseases for which current treatments are less than optimal and for which new drugs are greatly needed. Better understanding of the cellular and molecular mechanisms of these diseases has identified new targets for therapy and several new drugs are in development. Although most new treatments on the market are improvements in existing classes of drug or new combination of treatments, the clinicaltrials.gov website indicates 50 and 100 new medications for both asthma and COPD and many of these are entirely new...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27922747/frailty-and-subsequent-disability-and-mortality-among-patients-with-critical-illness
#5
Nathan E Brummel, Susan P Bell, Timothy D Girard, Pratik P Pandharipande, James C Jackson, Alessandro Morandi, Jennifer L Thompson, Rameela Chandrasekhar, Gordon R Bernard, Robert S Dittus, Thomas M Gill, E Wesley Ely
INTRODUCTION The prevalence of frailty (diminished physiologic reserve) and its effect on outcomes for those ≥18 years old with critical illness is unclear. We hypothesized greater frailty would be associated with subsequent mortality, disability, and cognitive impairment, regardless of age. METHODS At enrollment, we measured frailty using the Clinical Frailty Scale (CFS, range 1 [very fit] to 7 [severely frail]). At 3 and 12 months post-discharge, we assessed vital status, instrumental and basic activities of daily living (IADLs and BADLs), and cognition...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27922744/lung-pathologies-in-a-chronic-inflammation-mouse-model-are-independent-of-eosinophil-degranulation
#6
Elizabeth A Jacobsen, Sergei I Ochkur, Alfred D Doyle, William E LeSuer, Wen Li, Cheryl A Protheroe, Dana Colbert, Katie R Zellner, HuaHao H Shen, Charles G Irvin, James J Lee, Nancy A Lee
RATIONALE: The release of eosinophil granule proteins in the lungs of asthma patients has been dogmatically linked with lung remodeling and airway hyperresponsiveness (AHR). However, the demonstrated inability of established mouse models to display the eosinophil degranulation occurring in human subjects has prevented a definitive in vivo test of this hypothesis. OBJECTIVES: To demonstrate in vivo causative links between induced pulmonary histopathologies/lung dysfunction and eosinophil degranulation...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27922742/the-diaphragm-acts-as-a-brake-during-expiration-to-prevent-lung-collapse
#7
Mariangela Pellegrini, Göran Hedenstierna, Agneta Roneus, Monica Segelsjö, Anders Larsson, Gaetano Perchiazzi
RATIONALE: The diaphragm is the major inspiratory muscle and is assumed to relax during expiration. However, electrical post-inspiratory activity has been observed. Whether or not there is an expiratory diaphragmatic contraction that preserves lung patency has yet to be explored. OBJECTIVE: We hypothesized the occurrence of an expiratory diaphragmatic contraction directed at stabilizing peripheral airways and preventing or reducing cyclic expiratory lung collapse...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27922741/how-do-dual-long-acting-bronchodilators-prevent-exacerbations-of-chronic-obstructive-pulmonary-disease
#8
Kai M Beeh, Pierre-Regis Burgel, Frits M E Franssen, Jose Luis Lopez-Campos, Stelios Loukides, John R Hurst, Matjaž Fležar, Charlotte Suppli Ulrik, Fabiano Di Marco, Daiana Stolz, Arschang Valipour, Brian Casserly, Björn Ställberg, Konstantinos Kostikas, Jadwiga A Wedzicha
Decreasing the frequency and severity of exacerbations is one of the main goals of treatment for patients with chronic obstructive pulmonary disease (COPD). Several studies have documented that long-acting bronchodilators (LABDs) can reduce exacerbation rate and/or severity, and others have shown that combinations of long-acting 2-adrenergic agonists (LABAs) and long-acting muscarinic antagonists (LAMAs) provide greater reductions in exacerbation frequency than either their monocomponents or LABA/inhaled corticosteroids (LABA/ICS) combinations in patients at low and high risk for these events...
December 6, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911604/neutrophil-elastase-activity-is-associated-with-exacerbations-and-lung-function-decline-in-bronchiectasis
#9
James D Chalmers, Kelly L Moffitt, Guillermo Suarez-Cuartin, Oriol Sibila, Simon Finch, Elizabeth Furrie, Alison Dicker, Karolina Wrobel, J Stuart Elborn, Brian Walker, S Lorraine Martin, Sara E Marshall, Jeffrey T-J Huang, Thomas C Fardon
RATIONALE: Sputum neutrophil elastase and serum desmosine, a linked marker of endogenous elastin degradation, are possible biomarkers of disease severity and progression in bronchiectasis. This study aimed to determine the association of elastase activity and desmosine with exacerbations and lung function decline in bronchiectasis. METHODS: This was a single-centre prospective cohort study using the TAYBRIDGE registry in Dundee, UK. 433 patients with HRCT-confirmed bronchiectasis provided blood samples for desmosine measurement and 381 provided sputum for baseline elastase activity measurements using an activity based immunosassay and fluorometric substrate assay...
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911589/recommended-reading-from-university-of-georgia-department-of-epidemiology-and-biostatistics-fellows
#10
Leonardo Martinez, María Eugenia Castellanos, Benjamin D Hallowell, Christopher C Whalen
No abstract text is available yet for this article.
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911587/effects-of-variable-pressure-support-ventilation-on-regional-homogeneity-and-aeration
#11
Tommaso Mauri, Marta Lazzeri, Alfio Bronco, Giacomo Bellani, Antonio Pesenti
No abstract text is available yet for this article.
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911585/early-lung-disease-in-infants-and-pre-school-children-with-cystic-fibrosis-what-have-we-learnt-and-what-should-we-do-about-it
#12
Sarath C Ranganathan, Graham L Hall, Peter D Sly, Stephen M Stick, Tonia A Douglas
The past decade has seen significant advances in understanding of the pathogenesis and progression of lung disease in cystic fibrosis. Pulmonary inflammation, infection and structural lung damage manifest very early in life and is prevalent among preschool children and infants, often in the absence of symptoms or signs. Early childhood represents a pivotal period amenable to intervention strategies that could delay or prevent the onset of lung damage and alter the longer term clinical trajectory for individuals with CF...
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911582/recommended-reading-from-northwestern-university-fellows
#13
James M Walter, Jacqueline Kruser, Paul Reyfman, Peter H S Sporn
No abstract text is available yet for this article.
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911567/recommended-reading-from-mayo-clinic-department-of-pulmonary-and-critical-care-medicine-fellows
#14
Natalya Azadeh, Ryan D Clay, Nicholas A Braus, Kannan Ramar
No abstract text is available yet for this article.
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911566/pedometer-step-count-targets-during-pulmonary-rehabilitation-in-copd-a-randomized-controlled-trial
#15
Claire M Nolan, Matthew Maddocks, Jane L Canavan, Sarah E Jones, Veronica Delogu, Djeya Kaliaraju, Winston Banya, Samantha S C Kon, Michael I Polkey, William D-C Man
RATIONALE: Increasing physical activity is a key therapeutic aim in COPD. Pulmonary rehabilitation (PR) improves exercise capacity, but there is conflicting evidence regarding its ability to improve physical activity levels. OBJECTIVE: To determine whether using pedometers as an adjunct to PR can enhance time spent in at least moderate intensity physical activity (time ≥ 3METs) in people with COPD. METHODS: In this single-blinded randomized controlled trial, participants were assigned 1:1 to receive control (PR comprising 8 weeks, two supervised sessions/week) or intervention (PR plus pedometer-directed step targets, reviewed weekly for 8 weeks)...
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27911098/siga-deficiency-in-individual-small-airways-is-associated-with-persistent-inflammation-and-remodeling
#16
Vasiliy V Polosukhin, Bradley W Richmond, Rui-Hong Du, Justin M Cates, Pingsheng Wu, Hui Nian, Pierre P Massion, Lorraine B Ware, Jae Woo Lee, Alexey V Kononov, William E Lawson, Timothy S Blackwell
RATIONALE: Maintenance of a surface immune barrier is important for homeostasis in organs with mucosal surfaces that interface with the external environment; however, the role of the mucosal immune system in chronic lung diseases is incompletely understood. OBJECTIVES: We examined the relationship between secretory immunoglobulin A (SIgA) on the mucosal surface of small airways and parameters of inflammation and airway wall remodeling in chronic obstructive pulmonary disease (COPD)...
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27907454/menopause-is-associated-with-accelerated-lung-function-decline
#17
Kai Triebner, Bobette Matulonga, Ane Johannessen, Sandra Suske, Bryndís Benediktsdóttir, Pascal Demoly, Shyamali C Dharmage, Karl A Franklin, Judith Garcia Aymerich, José Antonio Gullón Blanco, Joachim Heinrich, Mathias Holm, Debbie Jarvis, Rain Jõgi, Eva Lindberg, Jesús Martínez Moratalla Rovira, Nerea Muniozguren Agirre, Isabelle Pin, Nicole Probst-Hensch, Luca Puggini, Chantal Raherison, José Luis Sánchez-Ramos, Vivi Schlünssen, Jordi Sunyer, Cecilie Svanes, Steinar Hustad, Bénédicte Leynaert, Francisco Gómez Real
RATIONALE: Menopause is associated with changes in sex hormones, which affect immunity, inflammation, and osteoporosis and may impair lung function. Lung function decline has not previously been investigated in relation to menopause. OBJECTIVES: To study whether lung function decline, assessed by forced vital capacity and forced expiratory volume in one second, is accelerated in women who undergo menopause. METHODS: The population-based longitudinal European Community Respiratory Health Survey provided serum samples, spirometry and questionnaire data about respiratory and reproductive health from three study waves (N=1438)...
December 1, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27901618/genome-wide-interaction-analysis-of-air-pollution-exposure-and-childhood-asthma-with-functional-follow-up
#18
Anna Gref, Simon Kebede Merid, Olena Gruzieva, Stéphane Ballereau, Allan Becker, Tom Bellander, Anna Bergström, Yohan Bossé, Matteo Bottai, Moira Chan-Yeung, Elaine Fuertes, Despo Ierodiakonou, Ruiwei Jiang, Stéphane Joly, Meaghan Jones, Michael S Kobor, Michal Korek, Anita L Kozyrskyj, Ashish Kumar, Nathanaël Lemonnier, Elaina MacIntyre, Camille Ménard, David Nickle, Ma'en Obeidat, Johann Pellet, Marie Standl, Annika Sääf, Cilla Söderhäll, Carla Mt Tiesler, Maarten van den Berge, Judith M Vonk, Hita Vora, Cheng-Jian Xu, Josep M Antó, Charles Auffray, Michael Brauer, Jean Bousquet, Bert Brunekreef, W James Gauderman, Joachim Heinrich, Juha Kere, Gerard H Koppelman, Dirkje Postma, Christopher Carlsten, Göran Pershagen, Erik Melén
RATIONALE: The evidence supporting an association between traffic-related air pollution exposure and incident childhood asthma is inconsistent, and may depend on genetic factors. OBJECTIVES: To identify gene-environment interaction effects on childhood asthma using genome-wide single nucleotide polymorphism (SNP) data and air pollution exposure. Identified loci were further analyzed at epigenetic and transcriptomic levels. METHODS: We used land use regression models to estimate individual air pollution exposure (represented by outdoor NO2 levels) at the birth address and performed a genome-wide interaction study for doctor's diagnosis of asthma up to 8 years in three European birth cohorts (n=1,534) with look-up for interaction in two separate North American cohorts, CHS and CAPPS/SAGE (n=1,602 and 186 subjects, respectively)...
November 30, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27898224/recommended-reading-from-radboud-university-medical-centre-fellows
#19
Willem-Jan M Schellekens, Diana Jansen, Mirrin J Dorresteijn, Leo M A Heunks
No abstract text is available yet for this article.
November 29, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27898215/randomized-trial-of-pleural-fluid-drainage-frequency-in-patients-with-malignant-pleural-effusions-the-asap-trial
#20
Momen M Wahidi, Chakravarthy Reddy, Lonny Yarmus, David Feller-Kopman, Ali Musani, R Wesley Shepherd, Hans Lee, Rabih Bechara, Carla Lamb, Scott Shofer, Kamran Mahmood, Gaetane Michaud, Jonathan Puchalski, Samaan Rafeq, Stephen M Cattaneo, John Mullon, Steven Leh, Martin Mayse, Samantha M Thomas, Bercedis Peterson, Richard W Light
RATIONALE: Patients with malignant pleural effusions have significant dyspnea and shortened life expectancy. Indwelling pleural catheters (IPC) allow patients to drain pleural fluid at home and can lead to auto-pleurodesis. The optimal drainage frequency to achieve auto-pleurodesis and freedom from catheter has not been determined. OBJECTIVE: To determine whether an aggressive daily drainage strategy is superior to the current standard every other day drainage of pleural fluid in achieving auto-pleurodesis...
November 29, 2016: American Journal of Respiratory and Critical Care Medicine
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