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https://www.readbyqxmd.com/read/28729471/hypoxic-vascular-response-and-ventilation-perfusion-matching-in-end-stage-copd-may-depend-on-p22phox
#1
Chandran Nagaraj, Christoph Tabeling, Bence M Nagy, Pritesh P Jain, Leigh M Marsh, Rita Papp, Michael Pienn, Martin Witzenrath, Bahil Ghanim, Walter Klepetko, E Kenneth Weir, Stefan Heschl, Grazyna Kwapiszewska, Andrea Olschewski, Horst Olschewski
Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease in which the amount of emphysema and airway disease may be very different between individuals, even in end-stage disease. Emphysema formation may be linked to the involvement of the small pulmonary vessels. The NAPDH oxidase (Nox) family is emerging as a key disease-related factor in vascular diseases, but currently its role in hypoxia-induced pulmonary remodelling in COPD remains unclear.Here we investigate the role of p22phox, a regulatory subunit of Nox, in COPD lungs, hypoxic pulmonary vasoconstriction (HPV), hypoxia-induced pulmonary vascular remodelling and pulmonary hypertension...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28727671/phenotypes-and-characterization-of-copd-a-pulmonary-rehabilitation-perspective
#2
Jonathan Raskin, Ted Marks, Albert Miller
Phenotyping and the characterization of chronic obstructive pulmonary disease (COPD) is currently an active area of interest. The perspectives gleaned from evaluating COPD in the context of exercise lend new insights into this endeavor. Pulmonary rehabilitation centers are uniquely positioned to generate such clinical observations and have enhanced an understanding of the disease processes that are involved in COPD. This review and commentary discusses the various patterns of exercise intolerance and characterizes COPD from the perspectives of clinicians caring for persons with COPD...
July 19, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28704452/influence-of-lung-ct-changes-in-chronic-obstructive-pulmonary-disease-copd-on-the-human-lung-microbiome
#3
Marion Engel, David Endesfelder, Brigitte Schloter-Hai, Susanne Kublik, Michael S Granitsiotis, Piera Boschetto, Mariarita Stendardo, Imre Barta, Balazs Dome, Jean-François Deleuze, Anne Boland, Joachim Müller-Quernheim, Antje Prasse, Tobias Welte, Jens Hohlfeld, Deepak Subramanian, David Parr, Ivo Glynne Gut, Timm Greulich, Andreas Rembert Koczulla, Adam Nowinski, Dorota Gorecka, Dave Singh, Sumit Gupta, Christopher E Brightling, Harald Hoffmann, Marion Frankenberger, Thomas P Hofer, Dorothe Burggraf, Marion Heiss-Neumann, Loems Ziegler-Heitbrock, Michael Schloter, Wolfgang Zu Castell
BACKGROUND: Changes in microbial community composition in the lung of patients suffering from moderate to severe COPD have been well documented. However, knowledge about specific microbiome structures in the human lung associated with CT defined abnormalities is limited. METHODS: Bacterial community composition derived from brush samples from lungs of 16 patients suffering from different CT defined subtypes of COPD and 9 healthy subjects was analyzed using a cultivation independent barcoding approach applying 454-pyrosequencing of 16S rRNA gene fragment amplicons...
2017: PloS One
https://www.readbyqxmd.com/read/28696811/prevalence-clinical-characteristics-and-morbidity-of-the-asthma-copd-overlap-in-a-general-population-sample
#4
Linda Ekerljung, Roxana Mincheva, Stig Hagstad, Anders Bjerg, Gunilla Telg, Georgios Stratelis, Jan Lötvall
Objective Although asthma and COPD have been regarded as distinct conditions, emerging literature suggests that overlapping phenotypes exists, asthma-COPD overlap (ACO). The aim of this study was to describe prevalence, patient characteristics and morbidity of ACO. Methods From a cross-sectional population sample, the West Sweden Asthma Study, subjects with suspected asthma, chronic bronchitis or COPD, and a random sample, were invited to clinical examinations. ACO was defined as doctors diagnosed asthma, or clear clinical signs of asthma at examination, with a FEV1/FVC<0...
July 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28694695/relationship-between-blood-eosinophils-clinical-characteristics-and-mortality-in-patients-with-copd
#5
Maeva Zysman, Gaëtan Deslee, Denis Caillaud, Pascal Chanez, Roger Escamilla, Isabelle Court-Fortune, Pascale Nesme-Meyer, Thierry Perez, Jean-Louis Paillasseur, Christophe Pinet, Gilles Jebrak, Nicolas Roche, Pierre-Régis Burgel
In patients with COPD, there is controversy regarding the association of blood eosinophil (Eos) levels with 1) exacerbation frequency and 2) the effect of inhaled corticosteroids for prevention of exacerbations. To determine whether Eos define subgroups of patients exhibiting attributes of COPD clinical phenotypes, we compared clinical features and mortality rates in COPD patients from the Initiatives BPCO French cohort categorized using different thresholds of blood Eos levels. The following data were collected at inclusion: medical and smoking history, occupational exposures, dyspnea, cough and sputum production, exacerbations in the previous year, history of allergy and asthma, nasal symptoms, body mass index, St George Respiratory Questionnaire (SGRQ) total score, post-bronchodilator spirometry, comorbidities, and medications...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28694694/expression-profiling-of-mirna-145-and-mirna-338-in-serum-and-sputum-of-patients-with-copd-asthma-and-asthma-copd-overlap-syndrome-phenotype
#6
Donato Lacedonia, Grazia Pia Palladino, Maria Pia Foschino-Barbaro, Giulia Scioscia, Giovanna Elisiana Carpagnano
BACKGROUND AND OBJECTIVES: A new phenotype with overlapping characteristics between asthma and chronic obstructive pulmonary disease (COPD) called asthma-COPD overlap syndrome (ACOS) is emerging among inflammation diseases. To date, there is no agreement on specific criteria to define this syndrome, and the current guidelines are insufficient to classify the analogy and differences between overlap and COPD or asthma phenotypes. It would be necessary to identify new biomarkers able to identify these diseases clearly...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28688465/chronic-obstructive-pulmonary-disease-phenotypes-implications-for-care
#7
REVIEW
Shireen Mirza, Roberto Benzo
Chronic obstructive pulmonary disease (COPD) phenotyping can help define clusters of patients with common characteristics that relate to clinically meaningful outcomes. In this review, we describe 7 clinically meaningful COPD phenotypes that can be identified by primary care physicians as well as specialists and that have specific management and prognostic implications: (1) asthma-COPD overlap phenotype, (2) frequent exacerbator phenotype, (3) upper lobe-predominant emphysema phenotype, (4) rapid decliner phenotype, (5) comorbid COPD phenotype, (6) physical frailty phenotype, and (7) emotional frailty phenotype...
July 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28684903/serum-levels-of-igfbp7-are-elevated-during-acute-exacerbation-in-copd-patients
#8
Wenjing Ruan, Minliang Wu, Liuhong Shi, Fengying Li, Liangliang Dong, Yuanhua Qiu, Xiaohong Wu, Kejing Ying
OBJECTIVE: The purpose of this study was to explore the insulin-like growth factor binding protein 7 (IGFBP7) level in the serum of chronic obstructive pulmonary disease (COPD) patients during acute exacerbation (AE). METHODS: The study population consisted of 47 AECOPD patients, including 25 patients enrolled between January 2011 and February 2011 (the first group) and 22 patients enrolled from December 2011 to August 2012 (the second group) and 29 healthy controls...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28670116/treatment-trends-in-patients-with-asthma-copd-overlap-syndrome-in-a-copd-cohort-findings-from-a-real-world-survey
#9
Bo Ding, Mark Small
BACKGROUND: Asthma and chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) is an increasingly recognized phenotype. Few randomized clinical trials have been conducted in patients with ACOS; therefore, scientific evidence concerning ACOS is scarce and a therapeutic approach remains unclear. The aim of this study was to evaluate current treatment trends for patients with ACOS, identified as those with a dual definition of asthma and COPD, in a real-world COPD cohort. METHODS: Data were analyzed from patients with asthma and COPD in the USA, France, Germany, Italy, Spain, and the UK who participated in the 2012 and 2013 Adelphi Respiratory Disease Specific Programmes (DSPs)...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28668357/copd-exacerbator-phenotype-time-for-reassessment
#10
Zahi Nachef, M Jeffery Mador
No abstract text is available yet for this article.
June 28, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28665906/characteristics-of-patients-with-congestive-heart-failure-or-chronic-obstructive-pulmonary-disease-readmissions-within-30-days-following-an-acute-exacerbation
#11
Austin Castillo, Hawa Edriss, Kavitha Selvan, Kenneth Nugent
BACKGROUND: The Hospital Readmissions Reduction Program targets Medicare patients with congestive heart failure (CHF) and chronic obstructive pulmonary disease (COPD) and penalizes hospitals that have increased 30-day readmission rates for these patients. The main goals of this study were to determine the clinical explanations for readmissions within 30 days, to identify possible deficiencies in patient care, and to identify typical characteristics of patients who were readmitted to the hospital...
July 2017: Quality Management in Health Care
https://www.readbyqxmd.com/read/28659395/cellular-and-molecular-mechanisms-of-asthma-and-copd
#12
REVIEW
Peter J Barnes
Asthma and chronic obstructive pulmonary disease (COPD) both cause airway obstruction and are associated with chronic inflammation of the airways. However, the nature and sites of the inflammation differ between these diseases, resulting in different pathology, clinical manifestations and response to therapy. In this review, the inflammatory and cellular mechanisms of asthma and COPD are compared and the differences in inflammatory cells and profile of inflammatory mediators are highlighted. These differences account for the differences in clinical manifestations of asthma and COPD and their response to therapy...
July 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28658564/a-clustering-approach-to-identify-and-characterize-the-asthma-and-chronic-obstructive-pulmonary-disease-overlap-phenotype
#13
Keita Hirai, Toshihiro Shirai, Masayuki Suzuki, Taisuke Akamatsu, Takahito Suzuki, Ichiro Hayashi, Akito Yamamoto, Takefumi Akita, Satoru Morita, Kazuhiro Asada, Daiki Tsuji, Kazuyuki Inoue, Kunihiko Itoh
BACKGROUND: Asthma and chronic obstructive pulmonary disease (COPD) are heterogeneous diseases. The phenotypes that have clinical features of both asthma and COPD are still incompletely understood. OBJECTIVE: To clarify the best discriminators of the asthma-COPD overlap phenotype from asthma and COPD subgroups using a clustering approach. METHODS: This study assessed pathophysiological parameters, including mRNA expression levels of T helper cell-related transcription factors, namely, TBX21 (Th1), GATA3 (Th2), RORC (Th17), and FOXP3 (Treg), in peripheral blood mononuclear cells in asthma patients (n = 152) and in COPD patients (n = 50)...
June 28, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28651088/genetic-and-epigenetic-alterations-in-normal-and-sensitive-copd-diseased-human-bronchial-epithelial-cells-repeatedly-exposed-to-air-pollution-derived-pm2-5
#14
B Leclercq, A Platel, S Antherieu, L Y Alleman, E M Hardy, E Perdrix, N Grova, V Riffault, B M Appenzeller, M Happillon, F Nesslany, P Coddeville, J-M Lo-Guidice, G Garçon
Even though clinical, epidemiological and toxicological studies have progressively provided a better knowledge of the underlying mechanisms by which air pollution-derived particulate matter (PM) exerts its harmful health effects, further in vitro studies on relevant cell systems are still needed. Hence, aiming of getting closer to the human in vivo conditions, primary human bronchial epithelial cells derived from normal subjects (NHBE) or sensitive chronic obstructive pulmonary disease (COPD)-diseased patients (DHBE) were differentiated at the air-liquid interface...
June 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28621160/epigenome-wide-association-study-of-chronic-obstructive-pulmonary-disease-and-lung-function-in-koreans
#15
Mi Kyeong Lee, Yoonki Hong, Sun-Young Kim, Woo Jin Kim, Stephanie J London
AIM: To identify differentially methylated probes (DMPs) and regions (DMRs) in relation to chronic obstructive pulmonary disease (COPD) and lung function traits. METHODS: We performed an epigenome-wide association study of COPD and spirometric parameters, including forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and FEV1/FVC, in blood DNA using the Infinium HumanMethylation450 (n = 100, a Korean COPD cohort). RESULTS: We found one significant DMP (cg03559389, DIP2C) and 104 significant DMRs after multiple-testing correction...
June 16, 2017: Epigenomics
https://www.readbyqxmd.com/read/28616289/the-bronchoscopic-interventions-for-chronic-obstructive-pulmonary-disease-according-to-different-phenotypes
#16
REVIEW
Jian-Jun Zhang, Yan Yin, Gang Hou
Bronchoscopic interventions are valuable adjuncts to the pharmacologic therapy for chronic obstructive pulmonary disease (COPD). But different phenotypes of COPD patients showed different clinical responses to the same or similar therapy. The optimal selection of bronchoscopic interventions for COPD patients also needs to be based on the phenotypes. According to the different phenotypes, novel interventional pulmonology techniques which were used for COPD treatments in daily clinical practice or clinical trials have been described extensively throughout our current review...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28606478/withdrawal-of-inhaled-corticosteroids-in-copd-a-meta-analysis
#17
Luigino Calzetta, Maria Gabriella Matera, Fulvio Braido, Marco Contoli, Angelo Corsico, Fabiano Di Marco, Pierachille Santus, Nicola Scichilone, Mario Cazzola, Paola Rogliani
BACKGROUND: Conflicting findings exist on the benefit of withdrawal of inhaled corticosteroid (ICS) in chronic obstructive pulmonary disease (COPD). We performed a quantitative synthesis in order to assess real impact of ICS discontinuation in COPD patients. METHODS: We carried out a meta-analysis via random-effects model on the available clinical evidence to evaluate the effect of ICS discontinuation in COPD. Randomized clinical trials and observational real-life studies investigating the effects of ICS withdrawal on the risk of COPD exacerbation, lung function (forced expiratory volume in 1 s [FEV1]) and quality of life (St...
June 9, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28592874/ct-based-local-distribution-metric-improves-characterization-of-copd
#18
Benjamin A Hoff, Esther Pompe, Stefanie Galbán, Dirkje S Postma, Jan-Willem J Lammers, Nick H T Ten Hacken, Leo Koenderman, Timothy D Johnson, Stijn E Verleden, Pim A de Jong, Firdaus A A Mohamed Hoesein, Maarten van den Berge, Brian D Ross, Craig J Galbán
Parametric response mapping (PRM) of paired CT lung images has been shown to improve the phenotyping of COPD by allowing for the visualization and quantification of non-emphysematous air trapping component, referred to as functional small airways disease (fSAD). Although promising, large variability in the standard method for analyzing PRM(fSAD) has been observed. We postulate that representing the 3D PRM(fSAD) data as a single scalar quantity (relative volume of PRM(fSAD)) oversimplifies the original 3D data, limiting its potential to detect the subtle progression of COPD as well as varying subtypes...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28585796/-impact-of-13-valent-pneumococal-conjugate-polysaccharide-vaccination-in-exacerbations-rate-of-copd-patients-with-moderate-to-severe-obstruction
#19
J M Figueira-Gonçalves, N Bethencourt-Martín, L I Pérez-Méndez, D Díaz-Pérez, C Guzmán-Sáenz, P Viña-Manrique, A J Pedrero-García
OBJECTIVE: One of the major microorganisms described as the cause of exacerbations of chronic obstructive pulmonary disease (COPD) is Streptococcus pneumoniae. The aim of this study is to evaluate the impact of 13-valent pneumococcal conjugate polysaccharide vaccine (PCV13) in COPD patients with regard to the development of exacerbations and the possible differential effect according to the patient's phenotype. METHODS: Prospective observational study of patients with COPD and FEV1 ≤ 65% and 18-month follow-up...
June 6, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28579769/ampicillin-resistance-in-haemophilus-influenzae-from-copd-patients-in-the-uk
#20
Satyanarayana Maddi, Umme Kolsum, Sarah Jackson, Richard Barraclough, Barbara Maschera, Karen D Simpson, Thierry G Pascal, Serge Durviaux, Edith M Hessel, Dave Singh
BACKGROUND: Haemophilus influenzae is commonly isolated from the airways of COPD patients. Antibiotic treatment may cause the emergence of resistant H. influenzae strains, particularly ampicillin-resistant strains, including β-lactamase-negative ampicillin resistance (BLNAR) strains. Genetic identification using ftsI sequencing is the optimum method for identifying mutations within BLNAR strains. The prevalence of BLNAR in COPD patients during the stable state has not been reported. We investigated the antibiotic resistance patterns of H...
2017: International Journal of Chronic Obstructive Pulmonary Disease
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