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carbon monoxide diffusing capacity DLCO

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https://www.readbyqxmd.com/read/29149883/serum-concentrations-of-krebs-von-den-lungen-6-surfactant-protein-d-and-matrix-metalloproteinase-2-as-diagnostic-biomarkers-in-patients-with-asbestosis-and-silicosis-a-case-control-study
#1
Changjiang Xue, Na Wu, Xue Li, Meihua Qiu, Xuqin Du, Qiao Ye
BACKGROUND: Asbestosis and silicosis are progressive pneumoconioses characterized by interstitial fibrosis following exposure to asbestos or silica dust. We evaluated the potential diagnostic biomarkers for these diseases. METHODS: The serum concentrations of Krebs von den Lungen-6 (KL-6), surfactant protein D (SP-D), and matrix metalloproteinase-2 (MMP-2), MMP-7, and MMP-9 were measured in 43 patients with asbestosis, 45 patients with silicosis, 40 dust-exposed workers (DEWs) without pneumoconiosis, and 45 healthy controls (HCs)...
November 17, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29123389/alveolar-capillary-reserve-during-exercise-in-patients-with-chronic-obstructive-pulmonary-disease
#2
Mehrdad Behnia, Courtney M Wheatley, Alberto Avolio, Bruce D Johnson
Background: Factors limiting exercise in patients with COPD are complex. With evidence for accelerated pulmonary vascular aging, destruction of alveolar-capillary bed, and hypoxic pulmonary vasoconstriction, the ability to functionally expand surface area during exercise may become a primary limitation. Purpose: To quantify measures of alveolar-capillary recruitment during exercise and the relationship to exercise capacity in a cohort of COPD patients. Methods: Thirty-two subjects gave consent (53% male, with mean ± standard deviation age 66±9 years, smoking 35±29 pack-years, and Global Initiative for Chronic Obstructive Lung Disease (GOLD) classification of 0-4: 2...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29121645/novel-lung-imaging-biomarkers-and-skin-gene-expression-subsetting-in-dasatinib-treatment-of-systemic-sclerosis-associated-interstitial-lung-disease
#3
Viktor Martyanov, Grace-Hyun J Kim, Wendy Hayes, Shuyan Du, Bishu J Ganguly, Oumar Sy, Sun Ku Lee, Galina S Bogatkevich, Gary L Schieven, Elena Schiopu, Roberta Gonçalves Marangoni, Jonathan Goldin, Michael L Whitfield, John Varga
BACKGROUND: There are no effective treatments or validated clinical response markers in systemic sclerosis (SSc). We assessed imaging biomarkers and performed gene expression profiling in a single-arm open-label clinical trial of tyrosine kinase inhibitor dasatinib in patients with SSc-associated interstitial lung disease (SSc-ILD). METHODS: Primary objectives were safety and pharmacokinetics. Secondary outcomes included clinical assessments, quantitative high-resolution computed tomography (HRCT) of the chest, serum biomarker assays and skin biopsy-based gene expression subset assignments...
2017: PloS One
https://www.readbyqxmd.com/read/29101610/endothelial-microparticles-are-associated-to-pathogenesis-of-idiopathic-pulmonary-fibrosis
#4
Nour C Bacha, Adeline Blandinieres, Elisa Rossi, Nicolas Gendron, Nathalie Nevo, Séverine Lecourt, Coralie L Guerin, Jean Marie Renard, Pascale Gaussem, Eduardo Angles-Cano, Chantal M Boulanger, Dominique Israel-Biet, David M Smadja
Idiopathic pulmonary fibrosis (IPF) is a devastating disease characterized by obliteration of alveolar architecture, resulting in declining lung function and ultimately death. Pathogenic mechanisms remain unclear but involve a concomitant accumulation of scar tissue together with myofibroblasts activation. Microparticles (MPs) have been investigated in several human lung diseases as possible pathogenic elements, prognosis markers and therapeutic targets. We postulated that levels and cellular origins of circulating MPs might serve as biomarkers in IPF patients and/or as active players of fibrogenesis...
November 3, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/29067627/physical-functioning-and-symptoms-of-chronic-fatigue-in-sarcoidosis-patients
#5
K Pilzak, A Żebrowska, M Sikora, B Hall, O Łakomy, S Kostorz, D Ziora, D Jastrzębski
Scientific reports underscore the importance of measuring the health-related quality of life in sarcoidosis patients. The present study seeks to define how sarcoidosis patients' quality of life, daily physical activity, and physical performance are related to each other. Seventeen patients (mean age 46.8 ± 8.8 years) suffering from sarcoidosis completed the following questionnaires: the fatigue assessment scale (FAS), the quality of life scale (SF-36 questionnaire), and the Borg dyspnea scale. Physical activity (PA) was assessed using accelerometry...
October 25, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29061853/factors-associated-with-disease-progression-in-early-diagnosed-pulmonary-arterial-hypertension-associated-with-systemic-sclerosis-longitudinal-data-from-the-detect-cohort
#6
Carina Mihai, Milos Antic, Rucsandra Dobrota, Diana Bonderman, Harbajan Chadha-Boreham, John Gerry Coghlan, Christopher P Denton, Martin Doelberg, Ekkehard Grünig, Dinesh Khanna, Vallerie V McLaughlin, Ulf Müller-Ladner, Janet E Pope, Daniel M Rosenberg, James R Seibold, Madelon C Vonk, Oliver Distler
OBJECTIVE: Pulmonary arterial hypertension (PAH) is a severe complication of systemic sclerosis (SSc). In this longitudinal study, we aimed to identify factors associated with an unfavourable outcome in patients with SSc with early PAH (SSc-PAH) from the DETECT cohort. METHODS: Patients with SSc-PAH enrolled in DETECT were observed for up to 3 years. Associations between cross-sectional variables and disease progression (defined as the occurrence of any of the following events: WHO Functional Class worsening, combination therapy for PAH, hospitalisation or death) were analysed by univariable logistic regression...
October 23, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29041888/-diffusion-capacity-of-the-lung-and-maladaptive-post-infarction-remodeling-of-the-heart
#7
N V Karetnikova, L O Barbarash, V M Katsyuba, M O Polikutina, S Y Slepynina
OBJECTIVE: To assess the association of the lowering of diffusion capacity of the lung and maladaptive remodeling of the heart in a year after myocardial infarction (MI). MATERIALS AND METHODS: We included into this study 107 patients with ST elevation MI (STEMI). Examination of all patients on 7-12 th days included echocardiography (echoCG), spirography, body plethysmography, and determination of lung diffusion capacity. After one year of observation in 87 patients (81...
August 2017: Kardiologiia
https://www.readbyqxmd.com/read/29037654/systemic-sclerosis-association-between-physical-function-handgrip-strength-and-pulmonary-function
#8
Agnaldo José Lopes, Amanda Cristina Justo, Arthur Sá Ferreira, Fernando Silva Guimaraes
BACKGROUND: Systemic sclerosis (SSc) is a multisystem disease affecting the skin, respiratory system and skeletal muscles. In SSc patients, hand function disability is the major factor limiting daily activities. AIM: To evaluate the association of physical function with handgrip strength and pulmonary function in SSc patients. A further aim was to assess the relationship between handgrip strength and pulmonary function in patients with SSc. METHOD: A cross-sectional study in which 28 patients with SSc underwent isometric handgrip strength (IHGS) measurement and pulmonary function tests and completed the Health Assessment Questionnaire Disability Index (HAQ-DI) to measure physical function...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29032138/wedge-pressure-rather-than-left%C3%A2-ventricular-end-diastolic-pressure-predicts-outcome-in-heart-failure-with%C3%A2-preserved-ejection-fraction
#9
Julia Mascherbauer, Caroline Zotter-Tufaro, Franz Duca, Christina Binder, Matthias Koschutnik, Andreas A Kammerlander, Stefan Aschauer, Diana Bonderman
OBJECTIVES: This study sought to compare the prognostic power of left ventricular end-diastolic pressure (LVEDP) and pulmonary arterial wedge pressure (PAWP) in heart failure with preserved ejection fraction (HFpEF). BACKGROUND: It is broadly accepted that direct measurement of LVEDP in HFpEF more robustly reflects left ventricular hemodynamics than PAWP. METHODS: A total of 173 consecutive HFpEF patients were prospectively enrolled. Of these, 152 patients fulfilled registry inclusion criteria...
November 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29017478/effectiveness-of-pulmonary-rehabilitation-in-patients-with-interstitial-lung-disease-of-different-etiology-a-multicenter-prospective-study
#10
Roberto Tonelli, Elisabetta Cocconcelli, Barbara Lanini, Isabella Romagnoli, Fabio Florini, Ivana Castaniere, Dario Andrisani, Stefania Cerri, Fabrizio Luppi, Riccardo Fantini, Alessandro Marchioni, Bianca Beghè, Francesco Gigliotti, Enrico M Clini
BACKGROUND: Recent evidences show that Pulmonary Rehabilitation (PR) is effective in patients with Interstitial Lung Disease (ILD). It is still unclear whether disease severity and/or etiology might impact on the reported benefits. We designed this prospective study 1) to confirm the efficacy of rehabilitation in a population of patients with ILDs and 2) to investigate whether baseline exercise capacity, disease severity or ILD etiology might affect outcomes. METHODS: Forty-one patients (IPF 63%, age 66...
October 10, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28964798/phenotypic-clusters-predict-outcomes-in-a-longitudinal-interstitial-lung-disease-cohort
#11
Ayodeji Adegunsoye, Justin M Oldham, Jonathan H Chung, Steven M Montner, Cathryn Lee, Leah J Witt, Danielle Stahlbaum, Rene S Bermea, Lena W Chen, Scully Hsu, Aliya N Husain, Imre Noth, Rekha Vij, Mary E Strek, Matthew Churpek
BACKGROUND: The current interstitial lung disease (ILD) classification has overlapping clinical presentations and outcomes. Cluster analysis modeling is a valuable tool in identifying distinct clinical phenotypes in heterogeneous diseases. However, this approach has yet to be implemented in ILD. METHODS: Using cluster analysis, novel ILD phenotypes were identified among subjects from a longitudinal ILD cohort, and outcomes were stratified according to phenotypic clusters compared with subgroups according to current American Thoracic Society/European Respiratory Society ILD classification criteria...
September 28, 2017: Chest
https://www.readbyqxmd.com/read/28957390/quantitative-evaluation-of-interstitial-pneumonia-using-3d-curved-high-resolution-ct-imaging-parallel-to-the-chest-wall-a-pilot-study
#12
Hiroyasu Umakoshi, Shingo Iwano, Tsutomu Inoue, Yuanzhong Li, Shinji Naganawa
OBJECTIVES: To quantify the imaging findings of patients with interstitial pneumonia (IP) and emphysema using three-dimensional curved high-resolution computed tomography (3D-cHRCT) at a constant depth from the chest wall, and compare the results to visual assessment of IP and each patient's diffusing capacity of the lungs for carbon monoxide (DLco). METHODS: We retrospectively reviewed the axial CT findings and pulmonary function test results of 95 patients with lung cancer (72 men and 23 women, aged 45-84 years) with or without IP, as follows: non-IP (n = 47), mild IP (n = 31), and moderate IP (n = 17)...
2017: PloS One
https://www.readbyqxmd.com/read/28915226/pulmonary-vascular-function-and-aerobic-exercise-capacity-at-moderate-altitude
#13
Vitalie Faoro, Gael Deboeck, Marco Vicenzi, Anne-Fleur Gaston, Bamodi Simaga, Grégory Doucende, Ilona Hapkova, Emma Roca, Enric Subirats, Fabienne Durand, Robert Naeije
PURPOSE: There has been suggestion that a greater "pulmonary vascular reserve" defined by a low pulmonary vascular resistance (PVR) and a high lung diffusing capacity (DL) allow for a superior aerobic exercise capacity. How pulmonary vascular reserve might affect exercise capacity at moderate altitude is not known. METHODS: Thirty-eight healthy subjects underwent an exercise stress echocardiography of the pulmonary circulation, combined with measurements of DL for nitric oxide (NO) and carbon monoxide (CO) and a cardiopulmonary exercise test at sea level and at an altitude of 2250 m...
October 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28906550/efficacy-and-safety-of-autologous-haematopoietic-stem-cell-transplantation-in-systemic-sclerosis-a-systematic-review-of-literature
#14
A Eyraud, L Scouppe, T Barnetche, E Forcade, E Lazaro, P Duffau, C Richez, J Seneschal, M-E Truchetet
We aimed at assessing the efficacy of autologous haematopoietic stem cell transplantation (HSCT) for skin sclerosis and lung function in systemic sclerosis (SSc). We performed a systematic literature review in the Pubmed and Scopus databases from the earliest records to March 2016. We assessed quality using the Cochrane tool for randomized studies, Newcastle-Ottawa scale for controlled-cohort studies and an 18-item quality appraisal checklist for case series. The primary outcome was the improvement of skin thickening using the modified Rodnan Skin Score (mRSS)...
September 14, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28876128/influence-of-inhaled-amiloride-on-lung-fluid-clearance-in-response-to-normobaric-hypoxia-in-healthy-individuals
#15
Courtney M Wheatley, Sarah E Baker, Bryan J Taylor, Manda L Keller-Ross, Steven C Chase, Alex R Carlson, Robert J Wentz, Eric M Snyder, Bruce D Johnson
Wheatley, Courtney M., Sarah E. Baker, Bryan J. Taylor, Manda L. Keller-Ross, Steven C. Chase, Alex R. Carlson, Robert J. Wentz, Eric M. Snyder, and Bruce D. Johnson. Influence of inhaled amiloride on lung fluid clearance in response to normobaric hypoxia in healthy individuals. High Alt Med Biol 00:000-000, 2017. AIM: To investigate the role of epithelial sodium channels (ENaC) on lung fluid clearance in response to normobaric hypoxia, 20 healthy subjects were exposed to 15 hours of hypoxia (fraction of inspired oxygen [FiO2] = 12...
September 6, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28875146/importance-of-serial-changes-in-biomarkers-in-idiopathic-pulmonary-fibrosis
#16
Akihiko Sokai, Kiminobu Tanizawa, Tomohiro Handa, Kumiko Kanatani, Takeshi Kubo, Kohei Ikezoe, Yoshinari Nakatsuka, Shinsaku Tokuda, Toru Oga, Toyohiro Hirai, Sonoko Nagai, Kazuo Chin, Michiaki Mishima
The clinical significance of serial changes in serum biomarkers in patients with idiopathic pulmonary fibrosis (IPF) remains to be established. This retrospective study was conducted to clarify the associations of serial changes in serum Krebs von den Lungen-6 (KL-6) and surfactant protein-D (SP-D) with changes in physiological indices and overall mortality in IPF. The study subjects were 75 patients with IPF. The 6 month change in serum KL-6 was significantly correlated with changes in the percentage of the predicted forced vital capacity (FVC % pred) and the percentage of the predicted diffusing capacity of the lung for carbon monoxide (% DLCO), while the 6 month change in serum SP-D was correlated only with % DLCO...
July 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28860741/comparison-of-world-health-organization-and-asia-pacific-body-mass-index-classifications-in-copd-patients
#17
Jeong Uk Lim, Jae Ha Lee, Ju Sang Kim, Yong Il Hwang, Tae-Hyung Kim, Seong Yong Lim, Kwang Ha Yoo, Ki-Suck Jung, Young Kyoon Kim, Chin Kook Rhee
INTRODUCTION: A low body mass index (BMI) is associated with increased mortality and low health-related quality of life in patients with COPD. The Asia-Pacific classification of BMI has a lower cutoff for overweight and obese categories compared to the World Health Organization (WHO) classification. The present study assessed patients with COPD among different BMI categories according to two BMI classification systems: WHO and Asia-Pacific. PATIENTS AND METHODS: Patients with COPD aged 40 years or older from the Korean COPD Subtype Study cohort were selected for evaluation...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28855034/-clinical-characteristics-of-118-cases-of-chronic-obstructive-pulmonary-disease-complicated-with-primary-bronchopulmonary-carcinoma
#18
Songlin Zhao, Xiuhong Nie, Lin Zhang, Wei Zhang, Han Xiao
BACKGROUND: The aim of this study is to investigate the clinical characteristics of patients with primary bronchopulmonary carcinoma complicated with chronic obstructive pulmonary disease (COPD), and to optimize the early diagnoses in the coexistence of COPD and primary bronchopulmonary carcinoma. METHODS: The clinical data of 118 patients with COPD complicated with primary bronchopulmonary carcinoma were analyzed retrospectively, including age, sex, smoking history, smoking index, clinical symptoms and signs, pathological type, staging, metastasis site and lung function index...
August 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28841877/influence-of-resting-lung-diffusion-on-exercise-capacity-in-patients-with-copd
#19
Mehrdad Behnia, Courtney Wheatley, Alberto Avolio, Bruce Johnson
BACKGROUND: Lung diffusing capacity for carbon monoxide (DLCO) gives an overall assessment of functional lung surface area for gas exchange and can be assessed using various methods. DLCO is an important factor in exercise intolerance in patients with chronic obstructive pulmonary disease (COPD). We investigated if the intra-breath (IBDLCO) method may give a more sensitive measure of available gas exchange surface area than the more typical single breath (SBDLCO) method and if COPD subjects with the largest resting DLCO relative to pulmonary blood flow (Qc) would have a more preserved exercise capacity...
August 25, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28808493/pulmonary-consequences-of-hypothyroidism
#20
Samiaa Hamdy Sadek, Walaa Anwar Khalifa, Ahmad Metwally Azoz
BACKGROUND: Although hypothyroidism has an insidious onset and relatively asymptomatic, exertional dyspnea and fatigue can be the presenting complaints. OBJECTIVES: The aim is to assess functional lung impairment in hypothyroid patients both at rest and during exercise. METHODS: A case-control study was carried out on 42 patients with newly diagnosed hypothyroidism and 12 control subjects. Hypothyroidism was diagnosed based on high value of thyroid stimulating hormone (TSH) ≥6 μIU/ml, and low value of free thyroxin (FT4) ≤0...
July 2017: Annals of Thoracic Medicine
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