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Network analysis and COPD

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https://www.readbyqxmd.com/read/29616282/a-large-lung-gene-expression-study-identifying-il1b-as-a-novel-player-in-airway-inflammation-in-copd-airway-epithelial-cells
#1
Gao Yi, Min Liang, Ming Li, Xiangming Fang, Jifang Liu, Yuxiong Lai, Jitao Chen, Wenxia Yao, Xiao Feng, La Hu, Chunyi Lin, Xinke Zhou, Zhaoyu Liu
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a chronic and progressive lung disease characterized by a mixture of small airway disease and lung tissue parenchymal destruction. Abnormal inflammatory responses to cigarette smoking and other noxious particles are generally thought to be responsible for causing of COPD. Since airway inflammation is a key factor in COPD progress, it is crucial to unravel its underlying molecular mechanisms. Unbiased analysis of genome-wide gene expression profiles in lung small airway epithelial cells provides a powerful tool to investigate this...
April 3, 2018: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/29611088/the-impact-of-care-specialty-on-survival-adjusted-medical-costs-of-copd-patients-after-a-hospitalization-a-longitudinal-analysis
#2
Wenjia Chen, Don D Sin, J Mark FitzGerald, Mohsen Sadatsafavi
BACKGROUND: Little is known about the impact of care provider's specialty on the medical costs of COPD patients over time. OBJECTIVE: To compare the long-term medical costs between newly hospitalized COPD patients whose post-discharge care was initiated by a pulmonary specialist versus by a general practitioner. DESIGN: Retrospective matched cohort study. PARTICIPANTS: We identified patients with an incident COPD-related hospitalization from the administrative health database (January 1, 1996, to December 31, 2012) of British Columbia, Canada...
April 2, 2018: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/29609004/emerging-biological-therapies-for-treating-chronic-obstructive-pulmonary-disease-a-pairwise-and-network-meta-analysis
#3
Paola Rogliani, Maria Gabriella Matera, Ermanno Puxeddu, Marco Mantero, Francesco Blasi, Mario Cazzola, Luigino Calzetta
Inflammation in chronic obstructive pulmonary disease (COPD) is often corticosteroid resistant and, thus, alternative anti-inflammatory approaches are needed. Since it is still not clear whether blocking specific pro-inflammatory factors may provide clinical benefit in COPD, we have performed a meta-analysis to quantify the impact of monoclonal antibodies (mABs) targeting the cytokine/chemokine-mediated inflammation in COPD. A pairwise and network meta-analyses were performed by extracting data from randomized clicnial trials on COPD concerning the impact of mABs vs...
March 30, 2018: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29551894/factors-influencing-treatment-escalation-from-long-acting-muscarinic-antagonist-monotherapy-to-triple-therapy-in-patients-with-copd-a-retrospective-thin-database-analysis
#4
John R Hurst, Maria Dilleen, Kevin Morris, Siân Hills, Birol Emir, Rupert Jones
Purpose: Inappropriate use of an inhaled corticosteroid (ICS) for COPD has clinical and economic disadvantages. This retrospective analysis of The UK Health Improvement Network (THIN) database identified factors influencing treatment escalation (step-up) from a long-acting muscarinic antagonist (LAMA) to triple therapy (LAMA + long-acting β-agonist-ICS). Secondary objectives included time to step up from first LAMA prescription, Global Initiative for Chronic Obstructive Lung Disease (GOLD) grouping (2011/2013, 2017), and Medical Research Council (MRC) grade prior to treatment escalation...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29506519/rnaseq-analysis-of-bronchial-epithelial-cells-to-identify-copd-associated-genes-and-snps
#5
Jiyoun Yeo, Diego A Morales, Tian Chen, Erin L Crawford, Xiaolu Zhang, Thomas M Blomquist, Albert M Levin, Pierre P Massion, Douglas A Arenberg, David E Midthun, Peter J Mazzone, Steven D Nathan, Ronald J Wainz, Patrick Nana-Sinkam, Paige F S Willey, Taylor J Arend, Karanbir Padda, Shuhao Qiu, Alexei Federov, Dawn-Alita R Hernandez, Jeffrey R Hammersley, Youngsook Yoon, Fadi Safi, Sadik A Khuder, James C Willey
BACKGROUND: There is a need for more powerful methods to identify low-effect SNPs that contribute to hereditary COPD pathogenesis. We hypothesized that SNPs contributing to COPD risk through cis-regulatory effects are enriched in genes comprised by bronchial epithelial cell (BEC) expression patterns associated with COPD. METHODS: To test this hypothesis, normal BEC specimens were obtained by bronchoscopy from 60 subjects: 30 subjects with COPD defined by spirometry (FEV1/FVC < 0...
March 5, 2018: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29495970/large-scale-external-validation-and-comparison-of-prognostic-models-an-application-to-chronic-obstructive-pulmonary-disease
#6
Beniamino Guerra, Sarah R Haile, Bernd Lamprecht, Ana S Ramírez, Pablo Martinez-Camblor, Bernhard Kaiser, Inmaculada Alfageme, Pere Almagro, Ciro Casanova, Cristóbal Esteban-González, Juan J Soler-Cataluña, Juan P de-Torres, Marc Miravitlles, Bartolome R Celli, Jose M Marin, Gerben Ter Riet, Patricia Sobradillo, Peter Lange, Judith Garcia-Aymerich, Josep M Antó, Alice M Turner, Meilan K Han, Arnulf Langhammer, Linda Leivseth, Per Bakke, Ane Johannessen, Toru Oga, Borja Cosio, Julio Ancochea-Bermúdez, Andres Echazarreta, Nicolas Roche, Pierre-Régis Burgel, Don D Sin, Joan B Soriano, Milo A Puhan
BACKGROUND: External validations and comparisons of prognostic models or scores are a prerequisite for their use in routine clinical care but are lacking in most medical fields including chronic obstructive pulmonary disease (COPD). Our aim was to externally validate and concurrently compare prognostic scores for 3-year all-cause mortality in mostly multimorbid patients with COPD. METHODS: We relied on 24 cohort studies of the COPD Cohorts Collaborative International Assessment consortium, corresponding to primary, secondary, and tertiary care in Europe, the Americas, and Japan...
March 2, 2018: BMC Medicine
https://www.readbyqxmd.com/read/29483774/mixed-th2-and-non-th2-inflammatory-pattern-in-the-asthma-copd-overlap-a-network-approach
#7
Luis Pérez de Llano, Borja G Cosío, Amanda Iglesias, Natividad de Las Cuevas, Juan Jose Soler-Cataluña, Jose Luis Izquierdo, Jose Luis López-Campos, Carmen Calero, Vicente Plaza, Marc Miravitlles, Alfons Torrego, Eva Martinez-Moragon, Joan B Soriano, Antolin Lopez Viña, Irina Bobolea
Introduction: The asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO) is a clinical condition that combines features of those two diseases, and that is difficult to define due to the lack of understanding of the underlying mechanisms. Determining systemic mediators may help clarify the nature of inflammation in patients with ACO. Objectives: We aimed at investigating the role and interaction of common markers of systemic inflammation (IL-6, IL-8, and tumor necrosis factor-α), Th2-related markers (periostin, IL-5, and IL-13), and IL-17 in asthma, COPD, and ACO...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29470502/chronic-obstructive-pulmonary-disease-copd-as-a-disease-of-early-aging-evidence-from-the-epichron-cohort
#8
Miguel J Divo, Bartolome R Celli, Beatriz Poblador-Plou, Amaia Calderón-Larrañaga, Juan Pablo de-Torres, Luis A Gimeno-Feliu, Juan Bertó, Javier J Zulueta, Ciro Casanova, Victor M Pinto-Plata, Carlos Cabrera-Lopez, Francesca Polverino, Jonás Carmona Píréz, Alexandra Prados-Torres, Jose M Marin
BACKGROUND: Aging is an important risk factor for most chronic diseases. Patients with COPD develop more comorbidities than non-COPD subjects. We hypothesized that the development of comorbidities characteristically affecting the elderly occur at an earlier age in subjects with the diagnosis of COPD. METHODS AND FINDINGS: We included all subjects carrying the diagnosis of COPD (n = 27,617), and a similar number of age and sex matched individuals without the diagnosis, extracted from the 727,241 records of individuals 40 years and older included in the EpiChron Cohort (Aragon, Spain)...
2018: PloS One
https://www.readbyqxmd.com/read/29393428/integration-of-transcriptomics-proteomics-metabolomics-and-systems-pharmacology-data-to-reveal-the-therapeutic-mechanism-underlying-chinese-herbal-bufei-yishen-formula-for-the-treatment-of-chronic-obstructive-pulmonary-disease
#9
Peng Zhao, Jiansheng Li, Liping Yang, Ya Li, Yange Tian, Suyun Li
Bufei Yishen formula (BYF) is a traditional Chinese medicine formula, which has long been used as a therapeutic agent for the treatment of chronic obstructive pulmonary disease (COPD). Systems pharmacology has previously been used to identify the potential targets of BYF, and an experimental study has demonstrated that BYF is able to prevent COPD. In addition, the transcriptomic and metabolomic profiles of lung tissues from rats with COPD and BYF‑treated rats have been characterized. The present study aimed to determine the therapeutic mechanisms underlying the effects of BYF on COPD treatment by integrating transcriptomics, proteomics and metabolomics, together with systems pharmacology datasets...
January 25, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29351331/the-association-between-previous-and-future-severe-exacerbations-of-chronic-obstructive-pulmonary-disease-updating-the-literature-using-robust-statistical-methodology
#10
Mohsen Sadatsafavi, Hui Xie, Mahyar Etminan, Kate Johnson, J Mark FitzGerald
BACKGROUND: There is minimal evidence on the extent to which the occurrence of a severe acute exacerbation of COPD that results in hospitalization affects the subsequent disease course. Previous studies on this topic did not generate causally-interpretable estimates. Our aim was to use corrected methodology to update previously reported estimates of the associations between previous and future exacerbations in these patients. METHODS: Using administrative health data in British Columbia, Canada (1997-2012), we constructed a cohort of patients with at least one severe exacerbation, defined as an episode of inpatient care with the main diagnosis of COPD based on international classification of diseases (ICD) codes...
2018: PloS One
https://www.readbyqxmd.com/read/29335020/ensemble-genomic-analysis-in-human-lung-tissue-identifies-novel-genes-for-chronic-obstructive-pulmonary-disease
#11
Jarrett D Morrow, Michael H Cho, John Platig, Xiaobo Zhou, Dawn L DeMeo, Weiliang Qiu, Bartholome Celli, Nathaniel Marchetti, Gerard J Criner, Raphael Bueno, George R Washko, Kimberly Glass, John Quackenbush, Edwin K Silverman, Craig P Hersh
BACKGROUND: Genome-wide association studies (GWAS) have identified single nucleotide polymorphisms (SNPs) significantly associated with chronic obstructive pulmonary disease (COPD). However, many genetic variants show suggestive evidence for association but do not meet the strict threshold for genome-wide significance. Integrative analysis of multiple omics datasets has the potential to identify novel genes involved in disease pathogenesis by leveraging these variants in a functional, regulatory context...
January 15, 2018: Human Genomics
https://www.readbyqxmd.com/read/29186145/respective-impact-of-implementation-of-prevention-strategies-colonization-with-multiresistant-bacteria-and-antimicrobial-use-on-the-risk-of-early-and-late-onset-vap-an-analysis-of-the-outcomerea-network
#12
MULTICENTER STUDY
Wafa Ibn Saied, Bertrand Souweine, Maité Garrouste-Orgeas, Stéphane Ruckly, Michael Darmon, Sébastien Bailly, Yves Cohen, Elie Azoulay, Carole Schwebel, Aguila Radjou, Hatem Kallel, Christophe Adrie, Anne-Sylvie Dumenil, Laurent Argaud, Guillaume Marcotte, Samir Jamali, Laurent Papazian, Dany Goldgran-Toledano, Lila Bouadma, Jean-Francois Timsit
RATIONALE: The impact of prevention strategies and risk factors for early-onset (EOP) versus late-onset (LOP) ventilator-associated pneumonia (VAP) are still debated. OBJECTIVES: To evaluate, in a multicenter cohort, the risk factors for EOP and LOP, as the evolution of prevention strategies. METHODS: 7,784 patients with mechanical ventilation (MV) for at least 48 hours were selected into the multicenter prospective OUTCOMEREA database (1997-2016)...
2017: PloS One
https://www.readbyqxmd.com/read/29176802/assessment-of-automated-analysis-of-portable-oximetry-as-a-screening-test-for-moderate-to-severe-sleep-apnea-in-patients-with-chronic-obstructive-pulmonary-disease
#13
Ana M Andrés-Blanco, Daniel Álvarez, Andrea Crespo, C Ainhoa Arroyo, Ana Cerezo-Hernández, Gonzalo C Gutiérrez-Tobal, Roberto Hornero, Félix Del Campo
BACKGROUND: The coexistence of obstructive sleep apnea syndrome (OSAS) and chronic obstructive pulmonary disease (COPD) leads to increased morbidity and mortality. The development of home-based screening tests is essential to expedite diagnosis. Nevertheless, there is still very limited evidence on the effectiveness of portable monitoring to diagnose OSAS in patients with pulmonary comorbidities. OBJECTIVE: To assess the influence of suffering from COPD in the performance of an oximetry-based screening test for moderate-to-severe OSAS, both in the hospital and at home...
2017: PloS One
https://www.readbyqxmd.com/read/29066881/entropy-change-of-biological-dynamics-in-copd
#14
REVIEW
Yu Jin, Chang Chen, Zhixin Cao, Baoqing Sun, Iek Long Lo, Tzu-Ming Liu, Jun Zheng, Shixue Sun, Yan Shi, Xiaohua Douglas Zhang
In this century, the rapid development of large data storage technologies, mobile network technology, and portable medical devices makes it possible to measure, record, store, and track analysis of large amount of data in human physiological signals. Entropy is a key metric for quantifying the irregularity contained in physiological signals. In this review, we focus on how entropy changes in various physiological signals in COPD. Our review concludes that the entropy change relies on the types of physiological signals under investigation...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29054348/survival-of-lung-transplant-candidates-with-copd-bode-score-reconsidered
#15
Robert M Reed, Howard J Cabral, Mark T Dransfield, Michael Eberlein, Christian A Merlo, Matthew J Mulligan, Giora Netzer, Pablo G Sanchez, Steven M Scharf, Don D Sin, Bartholome R Celli
BACKGROUND: The BMI, obstruction, dyspnea, and exercise capacity (BODE) score is used to inform prognostic considerations for lung transplantation for COPD, but it has not been validated in this context. A large proportion of mortality in COPD is attributable to comorbidities that could preclude transplant candidacy. We hypothesized that patients with COPD who are selected as transplant candidates experience better survival than traditional interpretation of BODE scores might indicate...
March 2018: Chest
https://www.readbyqxmd.com/read/29051040/on-the-potential-role-of-mri-biomarkers-of-copd-to-guide-bronchoscopic-lung-volume-reduction
#16
Colin J Adams, Dante P I Capaldi, Robert Di Cesare, David G McCormack, Grace Parraga
RATIONALE AND OBJECTIVES: In patients with severe emphysema and poor quality of life, bronchoscopic lung volume reduction (BLVR) may be considered and guided based on lobar emphysema severity. In particular, x-ray computed tomography (CT) emphysema measurements are used to identify the most diseased and the second-most diseased lobes as BLVR targets. Inhaled gas magnetic resonance imaging (MRI) also provides chronic obstructive pulmonary disease (COPD) biomarkers of lobar emphysema and ventilation abnormalities...
October 16, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29021576/the-recording-and-characteristics-of-pulmonary-rehabilitation-in-patients-with-copd-using-the-health-information-network-thin-primary-care-database
#17
Ali Hakamy, Tricia M McKeever, Jack E Gibson, Charlotte E Bolton
Pulmonary rehabilitation is recommended for patients with COPD to improve physical function, breathlessness and quality of life. Using The Health Information Network (THIN) primary care database in UK, we compared the demographic and clinical parameters of patients with COPD in relation to coding of pulmonary rehabilitation, and to investigate whether there is a survival benefit from pulmonary rehabilitation. We identified patients with COPD, diagnosed from 2004 and extracted information on demographics, pulmonary rehabilitation and clinical parameters using the relevant Read codes...
October 11, 2017: NPJ Primary Care Respiratory Medicine
https://www.readbyqxmd.com/read/29020824/biomarkers-of-oxidative-stress-and-protein-protein-interaction-in-chronic-obstructive-pulmonary-disease
#18
Taru Aggarwal, Ridhima Wadhwa, Vishwajeet Rohil, Pawan Kumar Maurya
CONTENT: The increased oxidative stress in chronic obstructive pulmonary disease (COPD) patients is the result of increased inhaled oxidants, generated by various cells of the airways. OBJECTIVE: The investigation included measurements of malondiadehyde (MDA), uric acid, ascorbic acid, and matrix metalloproteinase-12 (MMP-12) in COPD patient. We also performed genetic analysis for protein-protein interaction (PPI) network. MATERIALS AND METHODS: The study was conducted on healthy subjects with normal lung function (NS, 14 subjects) and 28 patients (Global Initiative for Chronic Obstructive Lung Disease (Gold) 1 and Gold 2) with COPD...
October 11, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29016655/meta-analysis-of-peripheral-blood-gene-expression-modules-for-copd-phenotypes
#19
Dominik Reinhold, Jarrett D Morrow, Sean Jacobson, Junxiao Hu, Benjamin Ringel, Max A Seibold, Craig P Hersh, Katerina J Kechris, Russell P Bowler
Chronic obstructive pulmonary disease (COPD) occurs typically in current or former smokers, but only a minority of people with smoking history develops the disease. Besides environmental factors, genetics is an important risk factor for COPD. However, the relationship between genetics, environment and phenotypes is not well understood. Sample sizes for genome-wide expression studies based on lung tissue have been small due to the invasive nature of sample collection. Increasing evidence for the systemic nature of the disease makes blood a good alternative source to study the disease, but there have also been few large-scale blood genomic studies in COPD...
2017: PloS One
https://www.readbyqxmd.com/read/28976774/proteomic-analysis-of-extracellular-hmgb1-identifies-binding-partners-and-exposes-its-potential-role-in-airway-epithelial-cell-homeostasis
#20
Sharon L Wong, Joyce To, Jerran Santos, Venkata Sita Rama Raju Allam, John P Dalton, Steven P Djordjevic, Sheila Donnelly, Matthew P Padula, Maria B Sukkar
The release of damage-associated molecular patterns (DAMPs) by airway epithelial cells is believed to play a crucial role in the initiation and development of chronic airway conditions such as asthma and chronic obstructive pulmonary disease (COPD). Intriguingly, the classic DAMP high-mobility group box-1 (HMGB1) is detected in the culture supernatant of airway epithelial cells under basal conditions, indicating a role for HMGB1 in the regulation of epithelial cellular and immune homeostasis. To gain contextual insight into the potential role of HMGB1 in airway epithelial cell homeostasis, we used the orthogonal and complementary methods of high-resolution clear native electrophoresis, immunoprecipitation, and pull-downs coupled to liquid chromatography-tandem mass spectrometry (LC-MS/MS) to profile HMGB1 and its binding partners in the culture supernatant of unstimulated airway epithelial cells...
January 5, 2018: Journal of Proteome Research
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