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https://www.readbyqxmd.com/read/27905295/desensitization-of-idiopathic-pulmonary-fibrosis-fibroblasts-to-alternaria-alternata-extract-mediated-necrotic-cell-death
#1
Jintaek Im, Kyutae Kim, Ji Young Yhee, Scott M O'Grady, Richard S Nho
Alternaria alternata is an allergenic fungus and known to cause an upper respiratory tract infection and asthma in humans with compromised immunity. Although A. alternata's effect on airway epithelial cells has previously been examined, the potential role of A. alternata on lung fibroblast viability is not understood. Since lung fibroblasts derived from patients with idiopathic pulmonary fibrosis (IPF) display a distinct phenotype that is resistant to stress and cell death inducing conditions, the investigation of the role of Alternaria on pathological IPF fibroblasts provides a better understanding of the fibrotic process induced by an allergenic fungus...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27905200/induced-sputum-to-detect-lung-pathogens-in-young-children-with-cystic-fibrosis
#2
Pamela D'Sylva, Daan Caudri, Nicole Shaw, Lidija Turkovic, Tonia Douglas, Jane Bew, Anthony D Keil, Stephen Stick, André Schultz
INTRODUCTION: Induced sputum sampling holds promise as a method for obtaining samples representative of the lower airways in young children. Collection of induced sputum samples in young children differs from older children and adults' as pharyngeal suctioning is often required. Our aim was to determine the sensitivity and specificity of induced sputum with and without airway clearance techniques to detect lower airway pathogens in children less than age 7 with cystic fibrosis. METHODS: Microbiological culture results were compared between 61 paired induced sputum and bronchoalveolar lavage fluid samples from young children with cystic fibrosis...
November 30, 2016: Pediatric Pulmonology
https://www.readbyqxmd.com/read/27903460/evaluation-of-qpcr-for-early-diagnosis-of-pseudomonas-aeruginosa-infection-in-cystic-fibrosis-a-prospective-cohort-study
#3
Geneviève Héry-Arnaud, Emmanuel Nowak, Jocelyne Caillon, Valérie David, Anne Dirou, Krista Revert, Marie-Reine Munck, Irène Frachon, Alain Haloun, Delphine Horeau-Langlard, Jean Le Bihan, Isabelle Danner-Boucher, Sophie Ramel, Marie-Paule Pelletier, Sylvain Rosec, Stéphanie Gouriou, Elise Poulhazan, Christopher Payan, Claude Férec, Gilles Rault, Grégoire Le Gal, Rozenn Le Berre
OBJECTIVES: Early detection of Pseudomonas aeruginosa lung positivity is a key element in cystic fibrosis (CF) management. The PCR has increased the accuracy of many microorganisms detection. Clinical relevance of P. aeruginosa quantitative PCR (qPCR) in this context is unclear. Our aim was to determine P. aeruginosa qPCR sensitivity and specificity, and to assess the possible time saved by qPCR in comparison with standard practice (culture). METHODS: A multicentre cohort study was conducted over a 3-year period in 96 CF patients without chronic P...
November 26, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27902784/dynamic-in-vivo-mutations-within-the-ica-operon-during-persistence-of-staphylococcus-aureus-in-the-airways-of-cystic-fibrosis-patients
#4
Bianca Schwartbeck, Johannes Birtel, Janina Treffon, Lars Langhanki, Alexander Mellmann, Devika Kale, Janina Kahl, Nina Hirschhausen, Claudia Neumann, Jean C Lee, Friedrich Götz, Holger Rohde, Hanae Henke, Peter Küster, Georg Peters, Barbara C Kahl
Cystic fibrosis (CF) is associated with chronic bacterial airway infections leading to lung insufficiency and decreased life expectancy. Staphylococcus aureus is one of the most prevalent pathogens isolated from the airways of CF patients. Mucoid colony morphology has been described for Pseudomonas aeruginosa, the most common pathogen in CF, but not for S. aureus. From the airways of 8 of 313 CF patients (2.5%) mucoid S. aureus isolates (n = 115) were cultured with a mean persistence of 29 months (range 1 month, 126 months)...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27902695/text-mining-genotype-phenotype-relationships-from-biomedical-literature-for-database-curation-and-precision-medicine
#5
Ayush Singhal, Michael Simmons, Zhiyong Lu
The practice of precision medicine will ultimately require databases of genes and mutations for healthcare providers to reference in order to understand the clinical implications of each patient's genetic makeup. Although the highest quality databases require manual curation, text mining tools can facilitate the curation process, increasing accuracy, coverage, and productivity. However, to date there are no available text mining tools that offer high-accuracy performance for extracting such triplets from biomedical literature...
November 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27902425/virulence-adaptations-of-pseudomonas-aeruginosa-isolated-from-patients-with-non-cystic-fibrosis-bronchiectasis
#6
Taylor Evart Woo, Jessica Duong, Nicole M Jervis, Harvey R Rabin, Michael D Parkins, Douglas Gordon Storey
Pseudomonas aeruginosa is a major pathogen in chronic lung diseases such as cystic fibrosis (CF) and non-cystic fibrosis bronchiectasis (nCFB). Much of our understanding regarding infections in nCFB patients is extrapolated from findings in CF with little direct investigation on the adaptation of P. aeruginosa in nCFB patients. As such, we investigated whether the adaptation of P. aeruginosa was indeed similar between nCFB and CF. From our prospectively collected biobank we identified 40 nCFB patients who had repeated P...
November 8, 2016: Microbiology
https://www.readbyqxmd.com/read/27902340/viral-bacterial-interactions-in-the-respiratory-tract
#7
Carla Bellinghausen, Gernot Gu Rohde, Paul Hm Savelkoul, Emiel Fm Wouters, Frank Rm Stassen
In the respiratory tract, viruses and bacteria can interact on multiple levels. It is well known that respiratory viruses, particularly influenza viruses, increase the susceptibility to secondary bacterial infections. Numerous mechanisms, including compromised physical and immunological barriers, and changes in the microenvironment have hereby been shown to contribute to the development of secondary bacterial infections. In contrast, our understanding of how bacteria shape a response to subsequent viral infection is still limited...
October 18, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27899769/the-role-of-club-cell-phenoconversion-and-migration-in-idiopathic-pulmonary-fibrosis
#8
Jutaro Fukumoto, Ramani Soundararajan, Joseph Leung, Ruan Cox, Sanjay Mahendrasah, Neha Muthavarapu, Travis Herrin, Alexander Czachor, Lee C Tan, Nima Hosseinian, Priyanshi Patel, Jayanthraj Gone, Mason T Breitzig, Young Cho, Andrew J Cooke, Lakshmi Galam, Venkata Ramireddy Narala, Yashwant Pathak, Richard F Lockey, Narasaiah Kolliputi
Idiopathic pulmonary fibrosis (IPF) is an age-related multifactorial disease featuring non-uniform lung fibrosis. The decisive cellular events at early stages of IPF are poorly understood. While the involvement of club cells in IPF pathogenesis is unclear, their migration has been associated with lung fibrosis. In this study, we labeled club cells immunohistochemically in IPF lungs using a club cell marker Claudin-10 (Cldn10), a unique protein based on the recent report which demonstrated that the appearance of Cldn10 in developing and repairing lungs precedes other club cell markers including club cell secretory protein (CCSP)...
November 29, 2016: Aging
https://www.readbyqxmd.com/read/27899043/use-of-biologics-and-other-novel-therapies-for-the-treatment-of-systemic-sclerosis
#9
Cosimo Bruni, Emanuela Praino, Yannick Allanore, Oliver Distler, Armando Gabrielli, Florenzo Iannone, Marco Matucci-Cerinic
Systemic sclerosis (SSc) is a systemic autoimmune disease characterized by vasculopathy, inflammation and fibrosis. These three main disease-determining pathways are the target of the currently available treatments used to possibly modify the progression of disease-related manifestations, although this synergy has not been fully applied on SSc joint, skin or lung involvement yet. Areas covered: we describe the current status of SSc treatment/therapy performing a literature search in MEDLINE/Pubmed and Thomson Reuter's Web of Science for articles published until March 2016...
November 30, 2016: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/27898750/-curative-radiotherapy-of-early-stage-lung-cancer-using-respiratory-motion-compensation
#10
András Szilágyi, Tamás Pócza, Csaba Polgár, Tibor Major, András Bajcsay, József Lövey
In this paper we present our early experience with a method for the management of respiratory motion in radiotherapy for early-stage lung cancer. Forty-six patients were irradiated with a total dose of 60 Gy. Tumor response on control CT, survival, local and distant progression as well as early and late side effects were registered. Complete and partial remission, stable and progressive disease was 17 (37.0%), 15 (32.6%), 11 (23.9%) and 3 (6.5%). Isolated local recurrence and distant metastasis appeared in 4 (8...
November 29, 2016: Magyar Onkologia
https://www.readbyqxmd.com/read/27898234/lumacaftor-ivacaftor-treatment-of-patients-with-cystic-fibrosis-heterozygous-for-f508del-cftr
#11
Steven M Rowe, Susanna A McColley, Ernst Rietschel, Xiaolei Li, Scott C Bell, Michael W Konstan, Gautham Marigowda, David Waltz, Michael P Boyle
RATIONALE: Lumacaftor/ivacaftor treatment (≤28 days) in patients with cystic fibrosis (CF) heterozygous for F508del-CFTR did not improve lung function. OBJECTIVES: To evaluate an optimized lumacaftor/ivacaftor dosing regimen with longer duration in a cohort of patients heterozygous for F508del-CFTR. METHODS: Patients age ≥18 years with a confirmed CF diagnosis and percent predicted forced expiratory volume in 1 second (ppFEV1) of 40 to 90 were randomized to lumacaftor/ivacaftor (400 mg/250 mg every 12 hours) or placebo daily for 56 days...
November 29, 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27896060/diffuse-bronchiectasis-as-the-primary-manifestation-of-endobronchial-sarcoidosis
#12
Paul D Hiles, Kenneth R Kemp, Jean M Coviello
Sarcoidosis is an idiopathic disease that most commonly involves the lungs and is characterized by granulomatous inflammation. Bronchiectasis is one pulmonary manifestation of sarcoidosis, although it is almost always observed as traction bronchiectasis in the setting of fibrotic lung disease. A 50-year-old woman was evaluated for chronic cough and bronchiectasis with a small amount of peripheral upper lobe honeycombing and no significant pulmonary fibrosis or lymphadenopathy. After an extensive laboratory and imaging evaluation did not identify a cause of her bronchiectasis, bronchoscopy was performed to assess for primary ciliary dyskinesia and revealed a diffuse cobblestone appearance of the airway mucosa...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27895643/azithromycin-attenuates-pseudomonas-induced-lung-inflammation-by-targeting-bacterial-proteins-secreted-in-the-cultured-medium
#13
Teresinha Leal, Gabriella Bergamini, François Huaux, Nadtha Panin, Sabrina Noel, Barbara Dhooghe, Jeremy B Haaf, Pierluigi Mauri, Sara Motta, Dario Di Silvestre, Paola Melotti, Claudio Sorio
BACKGROUND: Pseudomonas aeruginosa airway infections are a major cause of morbidity and mortality in patients with cystic fibrosis (CF). Azithromycin improves the related clinical outcomes, but its mechanisms of action remain poorly understood. We tested the hypothesis that azithromycin downregulates P. aeruginosa-induced pro-inflammatory responses by modifying release of bacterial proteins. METHODS: We monitored inflammatory markers in lungs of CF mutant mice and their littermate controls in response to conditioned media (CM) collected from the reference P...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27895584/induced-pluripotent-stem-cells-inhibit-bleomycin-induced-pulmonary-fibrosis-in-mice-through-suppressing-tgf-%C3%AE-1-smad-mediated-epithelial-to-mesenchymal-transition
#14
Yan Zhou, Zhong He, Yuan Gao, Rui Zheng, Xiaoye Zhang, Li Zhao, Mingqi Tan
Pulmonary fibrosis is a progressive and irreversible fibrotic lung disorder with high mortality and few treatment options. Recently, induced pluripotent stem (iPS) cells have been considered as an ideal resource for stem cell-based therapy. Although, an earlier study demonstrated the therapeutic effect of iPS cells on pulmonary fibrosis, the exact mechanisms remain obscure. The present study investigated the effects of iPS cells on inflammatory responses, transforming growth factor (TGF)-β1 signaling pathway, and epithelial to mesenchymal transition (EMT) during bleomycin (BLM)-induced lung fibrosis...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27895397/th17-involvement-in-nonalcoholic-fatty-liver-disease-progression-to-non-alcoholic-steatohepatitis
#15
REVIEW
Carla Melisa Chackelevicius, Sabrina Eliana Gambaro, Claudio Tiribelli, Natalia Rosso
The nonalcoholic fatty liver disease (NAFLD) is the hepatic manifestation of the metabolic syndrome. NAFLD encompasses a wide histological spectrum ranging from benign simple steatosis to non-alcoholic steatohepatitis (NASH). Sustained inflammation in the liver is critical in this process. Hepatic macrophages, including liver resident macropaghes (Kupffer cells), monocytes infiltrating the injured liver, as well as specific lymphocytes subsets play a pivotal role in the initiation and perpetuation of the inflammatory response, with a major deleterious impact on the progression of fatty liver to fibrosis...
November 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27894300/pleural-inhibition-of-the-caspase-1-il-1%C3%AE-pathway-diminishes-profibrotic-lung-toxicity-of-bleomycin
#16
Olivier Burgy, Pierre-Simon Bellaye, Sebastien Causse, Guillaume Beltramo, Guillaume Wettstein, Pierre-Marie Boutanquoi, Françoise Goirand, Carmen Garrido, Philippe Bonniaud
BACKGROUND: Idiopathic and toxic pulmonary fibrosis are severe diseases starting classically in the subpleural area of the lung. It has recently been suggested that pleural mesothelial cells acquire a myofibroblast phenotype under fibrotic conditions induced by TGF-β1 or bleomycin. The importance and role of inflammation in fibrogenesis are still controversial. In this work, we explored the role of IL-1β/caspase-1 signaling in bleomycin lung toxicity and in pleural mesothelial cell transformation...
November 29, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27894297/pulmonary-hypertension-and-vascular-remodeling-in-mice-exposed-to-crystalline-silica
#17
Igor N Zelko, Jianxin Zhu, Jeffrey D Ritzenthaler, Jesse Roman
BACKGROUND: Occupational and environmental exposure to crystalline silica may lead to the development of silicosis, which is characterized by inflammation and progressive fibrosis. A substantial number of patients diagnosed with silicosis develop pulmonary hypertension. Pulmonary hypertension associated with silicosis and with related restrictive lung diseases significantly reduces survival in affected subjects. An animal model of silicosis has been described previously however, the magnitude of vascular remodeling and hemodynamic effects of inhaled silica are largely unknown...
November 28, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27890986/correlation-of-chest-computed-tomography-findings-with-dyspnea-and-lung-functions-in-post-tubercular-sequelae
#18
Ananya Panda, Ashu Seith Bhalla, Raju Sharma, Anant Mohan, Vishnu Sreenivas, Umasankar Kalaimannan, Ashish Dutt Upadhyay
AIMS: To study the correlation between dyspnea, radiological findings, and pulmonary function tests (PFTs) in patients with sequelae of pulmonary tuberculosis (TB). MATERIALS AND METHODS: Clinical history, chest computed tomography (CT), and PFT of patients with post-TB sequelae were recorded. Dyspnea was graded according to the Modified Medical Research Council (mMRC) scale. CT scans were analyzed for fibrosis, cavitation, bronchiectasis, consolidation, nodules, and aspergilloma...
November 2016: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/27889352/oxidized-glutathione-and-uric-acid-as-biomarkers-of-early-cystic-fibrosis-lung-disease
#19
Nina Dickerhof, Rufus Turner, Irada Khalilova, Emmanuelle Fantino, Peter D Sly, Anthony J Kettle
BACKGROUND: In cystic fibrosis (CF) there is an urgent need for earlier diagnosis of pulmonary infections and inflammation using blood- and urine-based biomarkers. METHODS: Using mass spectrometry, oxidation products of glutathione and uric acid were measured in matched samples of bronchoalveolar lavage (BAL), serum and urine from 36 infants and children with CF, and related to markers of neutrophilic inflammation and infection in BAL. RESULTS: Oxidation products of glutathione (glutathione sulfonamide, GSA) and uric acid (allantoin), were elevated in BAL of children with pulmonary infections with Pseudomonas aeruginosa (PsA) compared to those without (p<0...
November 24, 2016: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/27888985/azathioprine-response-in-patients-with-fibrotic-connective-tissue-disease-associated-interstitial-lung-disease
#20
Justin M Oldham, Cathryn Lee, Eleanor Valenzi, Leah J Witt, Ayodeji Adegunsoye, Scully Hsu, Lena Chen, Steven Montner, Jonathan H Chung, Imre Noth, Rekha Vij, Mary E Strek
BACKGROUND: Azathioprine is a commonly prescribed therapy for connective tissue disease-associated interstitial lung disease (CTD-ILD). Combination therapy that included azathioprine was recently shown to increase the risk of death and hospitalization in patients with idiopathic pulmonary fibrosis. Whether azathioprine increases the risk of adverse outcomes in patients with fibrotic CTD-ILD, including those with CTD-associated usual interstitial pneumonia (UIP), remains unknown. METHODS: A retrospective cohort analysis was performed to determine the combined incidence rate of death, transplant and respiratory hospitalization associated with azathioprine exposure...
December 2016: Respiratory Medicine
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