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https://www.readbyqxmd.com/read/28273385/effect-of-aerosolized-antipseudomonals-on-pseudomonas-positivity-and-bronchiolitis-obliterans-syndrome-after-lung-transplantation
#1
Cody A Moore, Joseph M Pilewski, Raman Venkataraman, Keven M Robinson, Matthew R Morrell, Stephen R Wisniewski, Adriana Zeevi, John F McDyer, Christopher R Ensor
PURPOSE: To describe the effects of aerosolized antipseudomonals (AAP) on Pseudomonas (PS) culture positivity, bronchiolitis obliterans syndrome (BOS), and acute cellular rejection (ACR) in lung transplant recipients (LTRs). METHODS: Single-center, retrospective cohort study of adult LTRs treated with either AAP for ≥28 days vs no AAP therapy or AAP therapy <28 days, indexed to a matched median date post lung transplantation (LT). Primary outcome was freedom from PS positivity by positive bronchoalveolar lavage (BAL) or bronchial wash at 1 year...
March 8, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28267558/rapid-detection-of-donor-cell-free-dna-in-lung-transplant-recipients-with-rejections-using-donor-recipient-hla-mismatch
#2
Jun Zou, Brian Duffy, Michael Slade, Andrew Lee Young, Nancy Steward, Ramsey Hachem, T Mohanakumar
Fiberoptic bronchoscopy and transbronchial lung biopsy are currently the gold standard for detection of acute rejection following human lung transplantation (LTx). However, these surveillance procedures are expensive and invasive. Up to now, there are few new methods that have demonstrated clinical utility for detecting early stages of rejection following human lung transplantation. We optimized and technically validated a novel method to quantify donor-derived circulating cell free DNA (DcfDNA) that can be used as an early biomarker for lung allograft rejection...
March 4, 2017: Human Immunology
https://www.readbyqxmd.com/read/28266889/lung-injury-pathways-adenosine-receptor-2b-signaling-limits-development-of-ischemic-bronchiolitis-obliterans-organizing-pneumonia
#3
John C Densmore, Terry R Schaid, Paul M Jeziorczak, Meetha Medhora, Said Audi, Shraddha Nayak, John Auchampach, Melinda R Dwinell, Aron M Geurts, Elizabeth R Jacobs
Purpose/Aim of the Study: Adenosine signaling was studied in bronchiolitis obliterans organizing pneumonia (BOOP) resulting from unilateral lung ischemia. MATERIALS AND METHODS: Ischemia was achieved by either left main pulmonary artery or complete hilar ligation. Sprague-Dawley (SD) rats, Dahl salt sensitive (SS) rats and SS mutant rat strains containing a mutation in the A2B adenosine receptor gene (Adora2b) were studied. Adenosine concentrations were measured in bronchoalveolar lavage (BAL) by HPLC...
March 7, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28254742/pirfenidone-ameliorates-murine-chronic-gvhd-through-inhibition-of-macrophage-infiltration-and-tgf-%C3%AE-production
#4
Jing Du, Katelyn Paz, Ryan Flynn, Ante Vulic, Tara M Robinson, Katie E Lineburg, Kylie A Alexander, Jingjing Meng, Sabita Roy, Angela Panoskaltsis-Mortari, Michael Loschi, Geoffrey R Hill, Jonathan S Serody, Ivan Maillard, David Miklos, John Koreth, Corey S Cutler, Joseph H Antin, Jerome Ritz, Kelli P MacDonald, Timothy W Schacker, Leo Luznik, Bruce R Blazar
Allogeneic hematopoietic stem cell transplantation is hampered by chronic graft-versus-host disease (cGVHD) resulting in multi-organ fibrosis and diminished function. Fibrosis in lung and skin leads to progressive bronchiolitis obliterans (BO) and scleroderma, respectively, for which new treatments are needed. We evaluated pirfenidone, a FDA approved drug for idiopathic pulmonary fibrosis, for its therapeutic effect in cGVHD mouse models with distinct pathophysiology. In a full MHC-mismatched, multi-organ system model with BO, donor T cell responses that support pathogenic antibody production are required for cGVHD development...
March 2, 2017: Blood
https://www.readbyqxmd.com/read/28251796/cytotoxicity-of-natural-killer-cells-activated-through-nkg2d-contributes-to-the-development-of-bronchiolitis-obliterans-in-a-murine-heterotopic-tracheal-transplant-model
#5
Toru Kawakami, Koyu Ito, Yasushi Matsuda, Masahumi Noda, Akira Sakurada, Yasushi Hoshikawa, Yoshinori Okada, Kouetsu Ogasawara
Bronchiolitis obliterans after lung transplantation is a major cause of postoperative mortality in which T cell-mediated immunity is known to play an important role. However, the exact contribution of NK cells, which have similar functions to CD8(+) T cells, has not been defined. Here, we assessed the role of NK cells in murine bronchiolitis obliterans through heterotopic tracheal transplantations and found a greater percentage of NK cells in allografts than in isografts. Depletion of NK cells using an anti-NK1...
March 1, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28248570/the-diacetyl-exposed-human-airway-epithelial-secretome-new-insights-into-flavoring-induced-airways-disease
#6
David M Brass, William M Gwinn, Ashlee M Valente, Francine L Kelly, Christie D Brinkley, Andrew E Nagler, M Arthur Moseley, Daniel L Morgan, Scott M Palmer, Matthew W Foster
Bronchiolitis obliterans (BO) is an increasingly important lung disease characterized by fibroproliferative airway lesions and decrements in lung function. Occupational exposure to the artificial food flavoring ingredient diacetyl, commonly used to impart a buttery flavor to microwave popcorn, has been associated with BO development. In the occupational setting, diacetyl vapor is first encountered by the airway epithelium. To better understand the effects of diacetyl vapor on the airway epithelium we used an unbiased proteomic approach to characterize both the apical and basolateral secretomes of air liquid interface cultures of primary human airway epithelial cells from four unique donors after exposure to an occupationally relevant ~1100 ppm of diacetyl vapor or PBS as a control on alternating days...
March 1, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28245130/-1-h-nmr-to-evaluate-the-metabolome-of-bronchoalveolar-lavage-fluid-balf-in-bronchiolitis-obliterans-syndrome-bos-toward-the-development-of-a-new-approach-for-biomarker-identification
#7
Carlotta Ciaramelli, Marco Fumagalli, Simona Viglio, Anna Maria Bardoni, Davide Piloni, Federica Meloni, Paolo Iadarola, Cristina Airoldi
This report describes the application of NMR spectroscopy to the profiling of metabolites in bronchoalveolar lavage fluid (BALf) of lung transplant recipients without bronchiolitis obliterans syndrome (BOS) (stable, S, n = 10), and with BOS at different degrees of severity (BOS 0p, n = 10; BOS I, n = 10). Through the fine-tuning of a number of parameters concerning both sample preparation/processing and variations of spectra acquisition modes, an efficient and reproducible protocol was designed for the screening of metabolites in a pulmonary fluid that should reflect the status of airway inflammation/injury...
March 14, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28244139/quantitative-computed-tomography-assessment-of-bronchiolitis-obliterans-syndrome-after-lung-transplantation
#8
Lee Gazourian, Samuel Ash, Emily E K Meserve, Alejandro Diaz, Raul San Jose Estepar, Souheil Y El-Chemaly, Ivan O Rosas, Miguel Divo, Anne L Fuhlbrigge, Phillip C Camp, Vincent T Ho, Ami S Bhatt, Hilary J Goldberg, Lynette M Sholl, George R Washko
BACKGROUND: Bronchiolitis obliterans syndrome (BOS) is a clinical manifestation of chronic allograft rejection following lung transplantation. We examined the quantitative measurements of the proximal airway and vessels and pathologic correlations in subjects with BOS. METHODS: Patients who received a lung transplant at the Brigham and Women's Hospital between December 1st 2002 and December 31st 2010 were included in this study. We characterized the quantitative CT measures of proximal airways and vessels and pathological changes...
February 28, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28240604/autocrine-lysophosphatidic-acid-signaling-activates-%C3%AE-catenin-and-promotes-lung-allograft-fibrosis
#9
Pengxiu Cao, Yoshiro Aoki, Linda Badri, Natalie M Walker, Casey M Manning, Amir Lagstein, Eric R Fearon, Vibha N Lama
Tissue fibrosis is the primary cause of long-term graft failure after organ transplantation. In lung allografts, progressive terminal airway fibrosis leads to an irreversible decline in lung function termed bronchiolitis obliterans syndrome (BOS). Here, we have identified an autocrine pathway linking nuclear factor of activated T cells 2 (NFAT1), autotaxin (ATX), lysophosphatidic acid (LPA), and β-catenin that contributes to progression of fibrosis in lung allografts. Mesenchymal cells (MCs) derived from fibrotic lung allografts (BOS MCs) demonstrated constitutive nuclear β-catenin expression that was dependent on autocrine ATX secretion and LPA signaling...
February 27, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28215425/outcomes-of-lung-transplantation-for-infants-and-children-with-genetic-disorders-of-surfactant-metabolism
#10
Whitney B Eldridge, Qunyuan Zhang, Albert Faro, Stuart C Sweet, Pirooz Eghtesady, Aaron Hamvas, F Sessions Cole, Jennifer A Wambach
OBJECTIVE: To compare outcomes of infants and children who underwent lung transplantation for genetic disorders of surfactant metabolism (SFTPB, SFTPC, ABCA3, and NKX2-1) over 2 epochs (1993-2003 and 2004-2015) at St Louis Children's Hospital. STUDY DESIGN: We retrospectively reviewed clinical characteristics, mortality, and short- and long-term morbidities of infants (transplanted at <1 year; n = 28) and children (transplanted >1 year; n = 16) and compared outcomes by age at transplantation (infants vs children) and by epoch of transplantation...
February 16, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28186707/mesenchymal-stromal-cell-therapy-for-chronic-lung-allograft-dysfunction-results-of-a-first-in-man-study
#11
Daniel C Chambers, Debra Enever, Sharon Lawrence, Marian J Sturm, Richard Herrmann, Stephanie Yerkovich, Michael Musk, Peter M A Hopkins
Chronic lung transplant rejection (termed chronic lung allograft dysfunction [CLAD]) is the main impediment to long-term survival after lung transplantation. Bone marrow-derived mesenchymal stromal cells (MSCs) represent an attractive cell therapy in inflammatory diseases, including organ rejection, given their relative immune privilege and immunosuppressive and tolerogenic properties. Preclinical studies in models of obliterative bronchiolitis and human trials in graft versus host disease and renal transplantation suggest potential efficacy in CLAD...
February 1, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28144069/a-severe-mycoplasma-pneumoniae-pneumonia-inducing-an-acute-antibody-mediated-pulmonary-graft-rejection
#12
Sarah Démir, Julien Saison, Agathe Sénéchal, Jean-Francois Mornex
A 40-year-old cystic fibrosis woman with a history of double-lung transplantation 2 years previously was admitted for a progressive respiratory distress. Physical examination revealed fever (39°C) and diffuse bilateral lung crackles. Laboratory findings included severe hypoxemia and inflammatory syndrome. Bronchoalveolar lavage and serological test were positive for mycoplasma pneumonia. As the patient did not improve after 3 days of antibiotics and donor-specific HLA antibodies had been detected, an acute antibody-mediated graft rejection was treated with high-dose corticosteroids, plasma exchange, intravenous immunoglobulin, and rituximab...
January 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28138425/successful-treatment-of-pulmonary-injury-after-nitrogen-oxide-exposure-with-corticosteroid-therapy-a-case-report-and-review-of-the-literature
#13
Yasutoshi Kido, Akihisa Mitani, Hideaki Isago, Hideyuki Takeshima, Osamu Narumoto, Goh Tanaka, Yasuhiro Yamauchi, Daiya Takai, Nobuya Ohishi, Takahide Nagase
Nitrogen oxides are representative chemicals of occupational and environmental exposure, which can lead to fatal pulmonary injury. These oxides are also known to cause delayed occurrence of bronchiolitis obliterans (BO). Herein, we report a case of nitrogen oxide-induced lung injury. A 50-year-old man developed pulmonary edema after nitric acid exposure. Hypoxemia and respiratory failure were immediately improved after introduction of corticosteroid pulse therapy with supplemental oxygen. This was followed by administration of oral prednisolone, and delayed BO did not develop...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28138398/comparative-analysis-of-morphological-and-molecular-motifs-in-bronchiolitis-obliterans-and-alveolar-fibroelastosis-after-lung-and-stem-cell-transplantation
#14
Danny Jonigk, Berenice Rath, Paul Borchert, Peter Braubach, Lavinia Maegel, Nicole Izykowski, Gregor Warnecke, Wiebke Sommer, Hans Kreipe, Robert Blach, Adrian Anklamm, Axel Haverich, Matthias Eder, Michael Stadler, Tobias Welte, Jens Gottlieb, Mark Kuehnel, Florian Laenger
Chronic lung allograft dysfunction (CLAD) remains the major obstacle to long-term survival following lung transplantation (LuTx). Morphologically CLAD is defined by obliterative remodelling of the small airways (bronchiolitis obliterans, BO) as well as a more recently described collagenous obliteration of alveoli with elastosis summarised as alveolar fibroelastosis (AFE). Both patterns are not restricted to pulmonary allografts, but have also been reported following haematopoietic stem cell transplantation (HSCT) and radio chemotherapy (RC)...
January 2017: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/28131664/survival-and-outcomes-after-lung-transplantation-for-non-scleroderma-connective-tissue-related-interstitial-lung-disease
#15
Andrew M Courtwright, Souheil El-Chemaly, Paul F Dellaripa, Hilary J Goldberg
BACKGROUND: Patients with non-scleroderma connective tissue-related lung disease (NS-CTLD), including rheumatoid arthritis, idiopathic inflammatory myopathies, Sjögren syndrome, mixed connective tissue disease, and systemic lupus erythematosus, may be at risk for worse outcomes after lung transplantation because of immune dysregulation or extrapulmonary manifestations of their underlying disease. We compared survival, acute and chronic rejection, and extrapulmonary organ dysfunction after transplantation in patients with NS-CTLD and idiopathic pulmonary fibrosis (IPF)...
December 31, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28131494/immunomodulation-by-hyperimmunoglobulins-after-solid-organ-transplantation-beyond-prevention-of-viral-infection
#16
REVIEW
Rogier van Gent, Herold J Metselaar, Jaap Kwekkeboom
Hyperimmunoglobulins are pharmaceutical formulations of human IgG which contain high titers of antibodies against specific viruses. They have been successfully used in solid organ transplantation (SOT) to prevent Cytomegalovirus (CMV) and Hepatitis B Virus (HBV) infection. The introduction of effective and cheaper antiviral drugs has resulted in decreasing usage of hyperimmunoglobulins in SOT. However, it may still be attractive to combine antiviral drug therapy with hyperimmunoglobulins after SOT, as there is some evidence that hyperimmunoglobulins, similar to high doses of intravenous immunoglobulins (IVIgs), might exert anti-inflammatory activity and thereby prevent immunological graft damage and improve graft and patient survival...
January 19, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28124966/-a-case-of-bronchiolitis-obliterans-secondary-to-human-metapneumovirus-bronchiolitis
#17
Osman Yeşilbaş, Esra Şevketoğlu, Hasan Serdar Kıhtır, Mey Talip Petmezci, Elif Bato, Seda Balkaya, Nevin Hatipoğlu, Mert Ahmet Kuşkucu, Figen Palabıyık, Erkan Çakır
Human metapneumovirus (hMPV), formerly classified in Paramyxoviridae family is now moved into Pneumoviridae, which was described as a novel family. It causes upper and lower respiratory tract infections (LRTIs) usually in children younger than five years old. The recent epidemiological studies indicated that hMPV is the second most frequently detected virus in LRTIs of young children, following the respiratory syncytial virus (RSV). Bronchiolitis obliterans (BO) is a chronic obstructive lung disease characterized by fibrosis of the distal respiratory airways...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28116959/immunomodulatory-indications-of-azithromycin-in-respiratory-disease-a-concise-review-for-the-clinician
#18
Cassondra L Cramer, Allie Patterson, Abdulrazak Alchakaki, Ayman O Soubani
Azithromycin has a well-characterized bacteriostatic activity. However, it also has a robust immunomodulatory effect that has proven beneficial in a variety of chronic illnesses. This effect results in decreased production of pro-inflammatory cytokines in the acute phase and promotes resolution of chronic inflammation in the later phases. Specifically, azithromycin has direct activity on airway epithelial cells to maintain their function and reduce mucus secretion. These characteristics have resulted in the use of azithromycin in the management of a variety of chronic lung diseases including chronic obstructive pulmonary disease, cystic fibrosis (CF), non-CF bronchiectasis, bronchiolitis obliterans syndrome, diffuse panbronchiolitis, and asthma...
February 1, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28106480/radio-pathological-correlation-of-organizing-pneumonia-op-a-pictorial-review
#19
Mohammad Zare Mehrjardi, Shahram Kahkouee, Mihan Pourabdollah
Since the description of cryptogenic organizing pneumonia in 1983 by Davison et al and the subsequent report on bronchiolitis obliterans organizing pneumonia by Epler et al, some reports have been published regarding the imaging features of organizing pneumonia (OP). In this pictorial review, we aimed to describe and illustrate different manifestations of OP on high-resolution CT (HRCT) accompanied by their histopathological correlations for a better comprehension of pathomechanism of the radiological findings...
February 17, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28096986/extracorporeal-membrane-oxygenation-rescue-in-adolescent-with-bronchiolitis-obliterans-organizing-pneumonia-like-wegener-s-granulomatosis
#20
Lars Falk, Lars Mikael Broman
We report a 17-year-old woman with bronchiolitis obliterans-organizing pneumonia (BOOP)-like granulomatosis with polyangiitis developing severe airway obliterations. Pending age, phase and grade of autoimmune treatment, and offering ECMO treatment may be crucial for survival but occasionally preface futility. ECMO-treated patient with BOOP-like GPA has never been described before.
January 2017: Clinical Case Reports
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