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https://www.readbyqxmd.com/read/29033947/interferon-%C3%AE-s-front-line-guardians-of-immunity-and-homeostasis-in-the-respiratory-tract
#1
REVIEW
Evangelos Andreakos, Maria Salagianni, Ioanna E Galani, Ourania Koltsida
Type III interferons (IFNs), also termed lambda IFNs (IFNλs) or interleukins-28/29, constitute a new addition to the IFN family. They are induced upon infection and are particularly abundant at barrier surfaces, such as the respiratory and gastrointestinal tracts. Although they signal through a unique heterodimeric receptor complex comprising IFNLR1 and IL10RB, they activate a downstream signaling pathway remarkably similar to that of type I IFNs and share many functions with them. Yet, they also have important differences which are only now starting to unfold...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29033561/specific-iga-against-pseudomonas-aeruginosa-in-severe-copd
#2
Laura Millares, Sara Martí, Carmen Ardanuy, Josefina Liñares, Salud Santos, Jordi Dorca, Marian García-Nuñez, Sara Quero, Eduard Monsó
BACKGROUND: The bronchial mucosa is protected by a specialized immune system focused on the prevention of colonization and infection by potentially pathogenic microorganisms (PPMs). Immunoglobulin A (IgA) is the principal antibody involved in this mechanism. A defective immune barrier may facilitate the recurrent presence of PPMs in COPD. PURPOSE: The aim of this study was to determine IgA-mediated bronchial specific immune responses against Pseudomonas aeruginosa in stable patients with severe disease...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29032197/interleukin-22-attenuates-double-stranded-rna-induced-upregulation-of-pd-l1-in-airway-epithelial-cells-via-a-stat3-dependent-mechanism
#3
Nanae Seki, Keiko Kan-O, Koichiro Matsumoto, Satoru Fukuyama, Saaka Hamano, Ken Tonai, Keiichi Ota, Hiromasa Inoue, Yoichi Nakanishi
Double-stranded RNA derived from viruses induces host immune responses. PD-L1, also known as B7-H1, is an immune-checkpoint molecule associated with the escape of viruses from host immune systems, which plays a role in the persistence of viral infection, resulting in exacerbations of underlying diseases such as asthma and chronic obstructive pulmonary disease. Interleukin (IL)-22 is produced from various immune cells and has protective properties on mucosal tissue. The binding of IL-22 to IL-22 receptor induces STAT3 activation...
October 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29025891/impact-and-associations-of-eosinophilic-inflammation-in-copd-analysis-of-the-aeris-cohort
#4
Viktoriya L Kim, Ngaire A Coombs, Karl J Staples, Kristoffer K Ostridge, Nicholas P Williams, Stephen A Wootton, Jeanne-Marie Devaster, Emmanuel Aris, Stuart C Clarke, Andrew C Tuck, Simon C Bourne, Tom M A Wilkinson
Eosinophilic inflammation in chronic obstructive pulmonary disease (COPD) predicts response to treatment, especially corticosteroids. We studied the nature of eosinophilic inflammation in COPD prospectively to examine the stability of this phenotype and its dynamics across exacerbations, and its associations with clinical phenotype, exacerbations and infection.127 patients aged 40-85 years with moderate to very severe COPD underwent repeated blood and sputum sampling at stable visits and within 72 h of exacerbation for 1 year...
October 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29025886/th17-cytokines-novel-potential-therapeutic-targets-for-copd-pathogenesis-and-exacerbations
#5
REVIEW
Olivier Le Rouzic, Muriel Pichavant, Emilie Frealle, Antoine Guillon, Mustapha Si-Tahar, Philippe Gosset
Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory disease of the airways caused mainly by cigarette smoke exposure. COPD progression is marked by exacerbations of the disease, often associated with infections. Recent data show the involvement in COPD pathophysiology of interleukin (IL)-17 and IL-22, two cytokines that are important in the control of lung inflammation and infection. During the initiation and progression of the disease, increased IL-17 secretion causes neutrophil recruitment, leading to chronic inflammation, airways obstruction and emphysema...
October 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29023938/a-pharmacist-led-program-to-evaluate-and-reduce-polypharmacy-and-potentially-inappropriate-prescribing-in-older-hiv-positive-patients
#6
I R McNicholl, M Gandhi, C Bradley Hare, M Greene, E Pierluissi
OBJECTIVE: The goal of this pharmacist-led study was to utilize 2 validated instruments, Beers and Screening Tool of Older Persons' Potentially inappropriate Prescriptions (STOPP), to assess potentially inappropriate prescribing (PIP) in older patients infected with the human immunodeficiency virus (HIV) and evaluate pharmacist interventions. DESIGN: Prospective, randomized, interventional trial. SETTING: Large urban clinic providing interdisciplinary primary and HIV care for approximately 2700 HIV-positive, publically insured patients...
October 10, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/29020397/pentraxin-3-gene-polymorphisms-and-pulmonary-aspergillosis-in-copd-patients
#7
Qian He, Hongxing Li, Yuwen Rui, Lulu Liu, Binchan He, Yi Shi, Xin Su
Background: Pentraxin 3 (PTX3) plays an important role in resistance to Aspergillus infections. Previous studies have suggested that PTX3 polymorphisms influence the risk of invasive aspergillosis among transplantation recipients. This study was to investigate the association between PTX3 gene polymorphisms and pulmonary aspergillosis in chronic obstructive pulmonary disease (COPD) population. Methods: We included 173 consecutive inpatients with COPD. 36 cases were finally diagnosed with pulmonary aspergillosis...
August 19, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29020176/dpp4-the-mers-coronavirus-receptor-is-upregulated-in-lungs-of-smokers-and-copd-patients
#8
Leen J M Seys, W Widagdo, Fien M Verhamme, Alex Kleinjan, Wim Janssens, Guy F Joos, Ken R Bracke, Bart L Haagmans, Guy G Brusselle
Background: Middle East respiratory syndrome coronavirus (MERS-CoV) causes pneumonia with a relatively high case fatality rate in humans. Smokers and chronic obstructive pulmonary disease (COPD) patients have been reported to be more susceptible to MERS-CoV infection. Here, we determined the expression of MERS-CoV receptor, dipeptidyl peptidase IV (DPP4), in lung tissues of smokers without airflow limitation and COPD patients in comparison to non-smoking individuals (never-smokers). Methods: DPP4 expression was measured in lung tissue of lung resection specimens of never-smokers, smokers without airflow limitation, COPD GOLD stage II patients and in lung explants of end-stage COPD patients...
August 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29017955/triggering-receptor-expressed-on-myeloid-cells-2-trem-2-expression-tracks-with-m2-like-macrophage-activity-and-disease-severity-in-copd
#9
Derek E Byers, Kangyun Wu, Geoffrey Dang-Vu, Xiaohua Jin, Eugene Agapov, Xiaofeng Zhang, John T Battaile, Kenneth Schechtman, Roger Yusen, Richard A Pierce, Michael J Holtzman
BACKGROUND: Cell and animal models show a key role for Triggering Receptor Expressed on Myeloid Cells-2 (TREM-2) in chronic airway disease after viral infection but comparable evidence in humans still needs to be established. METHODS: Lung tissue samples were obtained from lung transplant recipients with GOLD Stage 4 COPD (n=16), non-transplantable donor lung tissues (n=10), and resected lung tissues from at-risk or GOLD Stage 1-4 patients (n=72) and were assessed for TREM-2 and TREM-1 mRNA, protein expression, and other markers of a type 2 immune response...
October 7, 2017: Chest
https://www.readbyqxmd.com/read/28994171/brain-abscesses-caused-by-cladophialophora-bantiana-in-a-lung-transplant-patient-a-case-report-and-review-of-the-literature
#10
Anthony Gschwend, Tristan Dégot, Julie Denis, Alina M Sabou, Mi Young Jeung, Emilie Zapata, Michele Porzio, Benjamin Renaud-Picard, Raoul Herbrecht, Romain Kessler
Cladophialophora bantiana brain abscesses are rare, but are frequently and quickly lethal in transplanted patients. We report the case of a 63-year-old man who had undergone lung transplantation for chronic obstructive pulmonary disease and presented with headaches and a neurological deficit. Magnetic resonance imaging revealed multiple brain abscesses. C. bantiana was identified by DNA sequencing performed directly on cerebral tissue obtained by surgical biopsy. After 6 months of antifungal treatment, the brain abscesses were replaced by ischemic sequelae...
October 9, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28983645/-pseudomonas-aeruginosa-infections-in-chronic-obstructive-pulmonary-disease-role-of-long-term-antibiotic-treatment
#11
REVIEW
G G U Rohde, T Welte
Chronic Pseudomonas aeruginosa colonization in the airways of patients with chronic obstructive pulmonary disease (COPD) is probably associated with increased mortality and morbidity and a faster progress of COPD, although this has not been conclusively proven by studies. Studies demonstrating an improvement in prognosis in COPD patients by early eradication of Pseudomonas or at least a reduction of the bacterial burden by either inhaled or oral antibiotic maintenance therapy, are missing. An impact on the exacerbation rate has only been shown for macrolide maintenance treatment; however, this effect could be explained by the inclusion of patients with bronchiectasis in the studies...
October 5, 2017: Der Internist
https://www.readbyqxmd.com/read/28982774/long-term-effects-of-inhaled-corticosteroids-on-sputum-bacterial-and-viral-loads-in-copd
#12
Marco Contoli, Alessia Pauletti, Maria Rita Rossi, Antonio Spanevello, Paolo Casolari, Andrea Marcellini, Giacomo Forini, Giulia Gnesini, Brunilda Marku, Neil Barnes, Andrea Rizzi, Giacomo Curradi, Gaetano Caramori, Paolo Morelli, Alberto Papi
Inhaled corticosteroid-containing medications reduce the frequency of COPD exacerbations (mainly infectious in origin) while paradoxically increasing the risk of other respiratory infections. The aim was to determine the effects of inhaled corticosteroids on airway microbial load in COPD patients and evaluate the influence of the underlying inflammatory profile on airway colonisation and microbiome.This is a proof-of-concept prospective, randomised, open-label, blinded endpoint study. Sixty patients with stable moderate COPD were randomised to receive one inhalation twice daily of either a combination of salmeterol 50 μg plus fluticasone propionate 500 μg or salmeterol 50 μg for 12 months...
October 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28981235/-lower-respiratory-tract-infections-in-immunocompetent-adult
#13
F Jacobs
Lower respiratory tract infections represent one of the main causes of mortality in the world. They essentially consist of bronchitis, acute exacerbations of chronic obstructive bronchopulmonary diseases (COPD) and acute pneumonia. If acute bronchitis is mainly of viral origin, acute exacerbations of COPD and pneumonia are mainly due to a trio of bacteria (Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis). Other pathogens as many viruses and atypical bacteria such as Mycoplasma pneumoniae, Legionella, some Enterobacteriaceae and very rarely Pseudomonas aeruginosa are also implicated...
2017: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/28975014/the-relative-burden-of-menopausal-and-postmenopausal-symptoms-versus-other-major-conditions-a-retrospective-analysis-of-the-medical-expenditure-panel-survey-data
#14
Annlouise R Assaf, Andrew G Bushmakin, Nina Joyce, Michael J Louie, Michael Flores, Margaret Moffatt
BACKGROUND: The direct costs associated with menopausal and postmenopausal symptoms (hereafter "menopausal symptoms") may include the costs of physician and emergency department visits, medications, laboratory testing, and the management of side effects. However, much remains unknown about the costs related to menopausal symptoms, including how they compare with the costs of other diseases that are common among menopausal women. OBJECTIVE: To compare the economic burden of menopausal symptoms with other select prevalent chronic conditions among a nationally representative sample of US menopausal women aged 45 to 65 years...
September 2017: American Health & Drug Benefits
https://www.readbyqxmd.com/read/28970096/epidemiology-and-microbiological-profile-comparison-between-community-and-hospital-acquired-infections-a-multicenter-retrospective-study-in-lebanon
#15
Roula Matta, Souheil Hallit, Rabih Hallit, Wafaa Bawab, Anne-Marie Rogues, Pascale Salameh
BACKGROUND: The objective of this study is to identify and characterize the species resistance of different pathogens between community acquired and hospital acquired infections pointing at patients' related independent co-morbidities and socio-demographic factors. METHODS: It was a retrospective cohort, multicenter study from five private hospitals located in Beirut and Mount Lebanon. Two hundred fifty-eight adult patients were included. RESULTS: 110 Gram negative pathogens and 26 Gram positive pathogens were implicated in hospital acquired infections...
September 29, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28968876/iga-protease-variants-facilitate-intracellular-survival-in-epithelial-cells-by-nontypeable-haemophilus-influenzae-that-persist-in-the-human-respiratory-tract-in-copd
#16
Timothy F Murphy, Charmaine Kirkham, Mary C Gallo, Yang Yang, Gregory E Wilding, Melinda M Pettigrew
Background: Nontypeable Haemophilus influenzae (NTHi) persists in the airways in chronic obstructive pulmonary disease (COPD). NTHi expresses four IgA protease variants (A1, A2, B1, B2) with distinct cleavage specificities for human IgA1. Little is known about the different roles of IgA protease variants in NTHi infection. Methods: Twenty-six NTHi isolates from a 20-year longitudinal study of COPD were analyzed for IgA protease expression, survival in human respiratory epithelial cells and cleavage of lysosomal-associated membrane protein 1 (LAMP1)...
September 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28967797/pulmonary-disease-by-non-tuberculous-mycobacteria-clinical-management-unmet-needs-and-future-perspectives
#17
Lars-Olof Larsson, Eva Polverino, Wouter Hoefsloot, Luigi R Codecasa, Roland Diel, Stephen G Jenkins, Michael R Loebinger
The number of patients with pulmonary disease caused by non-tuberculous mycobacteria (NTM) is increasing globally. Poor resistance against infections, for example, due to pre-existing lung diseases, immune deficiency and immune-modulating treatment, predisposes the population to developing pulmonary NTM disease. The incidence of pre-existing lung diseases such as chronic obstructive pulmonary disease and bronchiectasis has also increased. NTM disease diagnosis is often delayed due to non-specific symptoms. The therapeutic arsenal is limited and adherence to treatment guidelines is often low since the treatment regimens are complex, lengthy and side effects are common...
October 10, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28962584/sphingobacterium-spiritivorum-bacteremia-due-to-cellulitis-in-an-elderly-man-with-chronic-obstructive-pulmonary-disease-and-congestive-heart-failure-a-case-report
#18
Arata Hibi, Yuka Kumano
BACKGROUND: Sphingobacterium spiritivorum is a glucose non-fermenting Gram-negative rod, formerly classified as one of the Flavobacterium species. It is characterized by a large number of cellular membrane sphingophospholipids. Sphingobacterium species are ubiquitous and isolated from natural environments, such as soil and water. However, they rarely cause infections in humans. Only a limited number of cases have been reported in elderly and immunocompromised patients with underlying diseases and predisposing factors...
September 30, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28953449/hepatitis-c-virus-associated-extrahepatic-manifestations-in-lung-and-heart-and-antiviral-therapy-related-cardiopulmonary-toxicity
#19
Syeda Zainab Ilyas, Rabia Tabassum, Haroon Hamed, Shafiq Ur Rehman, Ishtiaq Qadri
Besides liver cirrhosis and hepatocellular carcinoma, chronic hepatitis C virus (HCV) infection is associated with many extrahepatic manifestations (EHMs). HCV exhibits lymphotropism that is responsible for various EHM. An important characteristic of HCV is escape from the immune system, which enables it to produce chronic infections and autoimmune disorders along with accumulation of circulating immune complexes. These EHMs have large spectrum, because they affect many organs such as heart, lungs, kidney, brain, thyroid, and skin...
September 27, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28947023/risk-factors-of-chronic-obstructive-pulmonary-disease-among-adults-in-chinese-mainland-a-systematic-review-and-meta-analysis
#20
REVIEW
Ying Yang, Jing Mao, Zhiying Ye, Jie Li, Huimin Zhao, Yueting Liu
BACKGROUND: Identifying risk factors is a key point for preventive strategies to reduce the incidence of COPD. The aim of this systematic review and meta-analysis was to determine the most important risk factors for COPD among adults in Chinese Mainland, so as to provide some precautions and interventions on this disease and preventing further recurrences. METHODS: A comprehensive literature review relating to risk factors for COPD through PubMed, EMBASE, Cochrane Library, China National Knowledge Infrastructure (CNKI), Wanfang database and VIP database was conducted before March 31, 2017...
October 2017: Respiratory Medicine
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