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https://www.readbyqxmd.com/read/28339145/respiratory-syncytial-virus-host-interaction-in-the-pathogenesis-of-bronchiolitis-and-its-impact-on-respiratory-morbidity-in-later-life
#1
REVIEW
Giovanni A Rossi, Andrew A Colin
Rossi GA, Colin AA(.) Respiratory syncytial virus - host interaction in the pathogenesis of bronchiolitis and its impact on respiratory morbidity in later life. Pediatr Allergy Immunol. Respiratory syncytial virus (RSV) is the most common agent of severe airway disease in infants and young children. Large epidemiologic studies have demonstrated a clear relationship between RSV infection and subsequent recurrent wheezing and asthma into childhood, thought to be predominantly related to long-term changes in neuroimmune control of airway tone rather than to allergic sensitization...
March 24, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28338488/respiratory-complications-management-and-treatments-for-neuromuscular-disease-in-children
#2
MyMy C Buu
PURPOSE OF REVIEW: To summarize current literature describing the respiratory complications of neuromuscular disease (NMD) and the effect of respiratory interventions and to explore new gene therapies for patients with NMD. RECENT FINDINGS: Measurements of respiratory function focus on vital capacity and maximal inspiratory and expiratory pressure and show decline over time. Management of respiratory complications includes lung volume recruitment, mechanical insufflation-exsufflation, chest physiotherapy and assisted ventilation...
March 23, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28338364/indications-risk-of-lower-airway-infection-and-complications-to-pediatric-tracheotomy-report-from-a-tertiary-referral-center
#3
Christian Grønhøj, Birgitte Charabi, Christian von Buchwald, Thomas Hjuler
BACKGROUND: Although pediatric tracheotomy is potentially life-saving, the procedure is associated with high risk of complications, and indications have changed the last decade. We report indications, complications, and lower airway infections (LAIs) to pediatric tracheotomy performed at a tertiary referral center. METHODS: We identified all children (<18 years) who underwent tracheotomy at our institution during 2008-2015. A review of hospital records was performed to extract data on indication of the procedure, complications, and information on pre- and postoperative LAI...
March 24, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28337897/exhaled-breath-temperature-measurement-influence-of-circadian-rhythm
#4
G E Carpagnano, D Lacedonia, M Malerba, D Martinelli, G Cotugno, M P Foschino-Barbaro
Exhaled breath temperature (EBT) is an expression of airway inflammation, an event that drives several lung diseases. The measurement of the exhaled breath temperature has recently been proposed as a popular tool in the diagnosis and monitoring of inflammatory lung diseases due to the fact that it is a non-invasive method. The influence of external factors on EBT, its reproducibility, and its sensitivity to treatment have already been explored. However, to reach clinical practice, EBT requires a complete validation that is still lacking...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28336814/airway-smooth-muscle-dysfunction-in-pompe-gaa-mice
#5
Allison M Keeler, Donghai Liu, Marina Zieger, Lang Xiong, Jeffrey Salemi, Karl Bellve, Barry J Byrne, David D Fuller, Ronghua ZhuGe, Mai K ElMallah
Pompe disease is an autosomal recessive disorder caused by a deficiency of acid alpha-glucosidase (GAA) - an enzyme responsible for hydrolyzing lysosomal glycogen. Deficiency of GAA leads to systemic glycogen accumulation in the lysosomes of skeletal muscle, motor neurons and smooth muscle. Skeletal muscle and motor neuron pathology are known to contribute to respiratory insufficiency in Pompe disease, but the role of airway pathology has not been evaluated. Here we propose that GAA enzyme deficiency disrupts the function of the trachea and bronchi, and this lower airway pathology contributes to respiratory insufficiency in Pompe disease...
March 23, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28336811/the-circadian-protein-bmal1-in-myeloid-cells-is-a-negative-regulator-of-allergic-asthma
#6
Zbigniew Zaslona, Sarah Case, James O Early, Stephen J Lalor, Rachel M McLoughlin, Anne M Curtis, Luke A O'Neill
Our body clock drives rhythms in the expression of genes that have a 24-hour periodicity. BMAL1 is a transcription factor, which is a crucial component in the molecular clock. A number of physiological processes, including immune function are modulated by the circadian clock. Asthma is of particular relevance to the area of circadian control of immunity, since it is a disease with very strong clinical evidence demonstrating regulation by circadian variation. Airway hypersensitivity and asthma attacks are more common at night in humans...
March 23, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28336486/mitochondrial-dysfunction-in-airway-disease
#7
Y S Prakash, Christina M Pabelick, Gary C Sieck
There is increasing appreciation that mitochondria serve cellular functions beyond oxygen sensing and energy production. Accordingly, it has become important to explore non-canonical roles of mitochondria in normal and pathophysiological processes that influence airway structure and function in the context of diseases such as asthma and COPD. Mitochondria can sense upstream processes such as inflammation, infection, tobacco smoke and environmental insults important in these diseases, and in turn can respond to such stimuli via altered mitochondrial protein expression, structure, and resultant dysfunction...
March 21, 2017: Chest
https://www.readbyqxmd.com/read/28335732/lung-function-associated-gene-integrator-complex-subunit-12-regulates-protein-synthesis-pathways
#8
Alexander K Kheirallah, Cornelia H de Moor, Alen Faiz, Ian Sayers, Ian P Hall
BACKGROUND: Genetic studies of human lung function and Chronic Obstructive Pulmonary Disease have identified a highly significant and reproducible signal on 4q24. It remains unclear which of the two candidate genes within this locus may regulate lung function: GSTCD, a gene with unknown function, and/or INTS12, a member of the Integrator Complex which is currently thought to mediate 3'end processing of small nuclear RNAs. RESULTS: We found that, in lung tissue, 4q24 polymorphisms associated with lung function correlate with INTS12 but not neighbouring GSTCD expression...
March 23, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28333899/-stem-progenitor-cells-in-diseases-of-the-respiratory-tract
#9
EDITORIAL
Tadeusz Płusa
Stem cells (SCs - stem cells) are characterized by plasticity and the ability to differentiate into other cell types. They are obtained from bone marrow, peripheral blood and cord blood. Mesenchymal stem cells (MSCs) shows a broad immunomodulating, increases the number of regulatory T cells (Treg), modifies the activity of T cells, dendritic cells and NK (natural killer). Direct impact on reducing the release of proinflammatory cytokines and increased release of proinflammatory cytokines. Within the respiratory tract has a number of resident stem and progenitor cells referred to as L-MSCs (lung mesenchymal stem cells) whose presence was confirmed by markers as defined in the trachea, epithelial cells and alveolar...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28332107/mechanisms-driving-gender-differences-in-asthma
#10
REVIEW
Hubaida Fuseini, Dawn C Newcomb
PURPOSE OF REVIEW: Many phenotypes of asthma exist, ranging from mild asthma with onset during childhood to severe asthma with later onset, making asthma a broad disease with different pathologies. A gender disparity exists in asthma prevalence. As adults, women have an increased asthma prevalence compared to men. Further, women are more likely to have severe asthma and a later onset of asthma compared to men. Here, we review clinical and animal studies that have defined the role of sex hormones in airway inflammation, smooth muscle contraction, mucus production, and airway mechanics associated with asthma pathogenesis...
March 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28331451/vanishing-bronchus-after-lung-transplantation-the-role-of-sequential-airway-dilatations
#11
Abdul Hamid Alraiyes, Hanine Inaty, Michael S Machuzak
BACKGROUND: Airway complications after lung transplant play an important role in patient survival. Early recognition and treatment of these complications are necessary to help ensure that patients who receive lung transplants have good outcomes. CASE REPORT: A 61-year-old female with a history of pulmonary venous occlusive disease presented to our hospital for a double-lung transplant. Her postoperative course was complicated by severe primary graft dysfunction...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28330688/management-of-spontaneous-pneumomediastinum-are-hospitalization-and-prophylactic-antibiotics-needed
#12
Masatomo Ebina, Akira Inoue, Akihiro Takaba, Koichi Ariyoshi
BACKGROUND: Spontaneous pneumomediastinum is defined as the presence of free air in the mediastinum without any apparent concomitant factors or disease. It is uncommon but usually benign and self-limiting. Generally, patients with spontaneous pneumomediastinum are admitted to hospital, and occasionally, prophylactic antibiotics are administered to prevent mediastinitis. The purpose of this study was to describe practices concerning the feasibility of outpatient treatment and follow-up of spontaneous pneumomediastinum and the necessity of prophylactic antibiotics...
March 10, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28330503/caffeine-modulates-glucocorticoid-induced-expression-of-ctgf-in-lung-epithelial-cells-and-fibroblasts
#13
Markus Fehrholz, Kirsten Glaser, Christian P Speer, Silvia Seidenspinner, Barbara Ottensmeier, Steffen Kunzmann
BACKGROUND: Although caffeine and glucocorticoids are frequently used to treat chronic lung disease in preterm neonates, potential interactions are largely unknown. While anti-inflammatory effects of glucocorticoids are well defined, their impact on airway remodeling is less characterized. Caffeine has been ascribed to positive effects on airway inflammation as well as remodeling. Connective tissue growth factor (CTGF, CCN2) plays a key role in airway remodeling and has been implicated in the pathogenesis of chronic lung diseases such as bronchopulmonary dysplasia (BPD) in preterm infants...
March 23, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28329084/obstructive-sleep-apnea-is-associated-with-early-but-possibly-modifiable-alzheimer-s-disease-changes
#14
Claudio Liguori, Nicola Biagio Mercuri, Francesca Izzi, Andrea Romigi, Alberto Cordella, Giuseppe Sancesario, Fabio Placidi
Study Objectives: Obstructive sleep apnea (OSA) is a common sleep disorder. Actually, literature lacks studies examining sleep, cognition, and Alzheimer's Disease (AD) cerebrospinal-fluid biomarkers in OSA patients. Therefore, we firstly studied cognitive performances, polysomnographic sleep, and CSF β-amyloid, tau proteins and lactate levels in patients affected by subjective cognitive impairment (SCI) divided in three groups: OSA patients (showing an Apnea-Hypopnea Index - AHI ≥15/h), controls (showing an AHI<15/h), and patients treating OSA by continuous positive airway pressure (CPAP)...
January 28, 2017: Sleep
https://www.readbyqxmd.com/read/28328824/early-use-of-noninvasive-techniques-for-clearing-respiratory-secretions-during-noninvasive-positive-pressure-ventilation-in-patients-with-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-and-hypercapnic-encephalopathy-a-prospective-cohort-study
#15
Jinrong Wang, Zhaobo Cui, Shuhong Liu, Xiuling Gao, Pan Gao, Yi Shi, Shufen Guo, Peipei Li
Noninvasive positive-pressure ventilation (NPPV) might be superior to conventional mechanical ventilation (CMV) in patients with acute exacerbations of chronic obstructive pulmonary disease (AECOPDs). Inefficient clearance of respiratory secretions provokes NPPV failure in patients with hypercapnic encephalopathy (HE). This study compared CMV and NPPV combined with a noninvasive strategy for clearing secretions in HE and AECOPD patients.The present study is a prospective cohort study of AECOPD and HE patients enrolled between October 2013 and August 2015 in a critical care unit of a major university teaching hospital in China...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28328242/human-airway-epithelial-cells-direct-significant-rhinovirus-replication-in-monocytic-cells-by-enhancing-icam1-expression
#16
Xu Zhou, Lingxiang Zhu, Rosa Lizarraga, Yin Chen
Human rhinovirus (RV) is the major cause of common cold, and it also plays a significant role in asthma and asthma exacerbation. Airway epithelium is the primary site of RV infection and production. In contrast, monocytic cells (e.g. monocytes and macrophages) are believed to be non-permissive for RV replication. Instead, RV has been shown to modulate inflammatory gene expressions in these cells via a replication-independent mechanism. In the present study, RV16 (a major-group RV) replication was found to be significantly enhanced in monocytes when co-cultivated with airway epithelial cells...
March 22, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28328157/lack-of-small-colony-variants-of-staphylococcus-aureus-from-lower-respiratory-tract-specimens
#17
Rosemary Carzino, Emily Hart, Philip Sutton, Louise King, Sarath Ranganathan
BACKGROUND: Small-colony variants (SCVs) of Staphylococcus aureus are associated with worse lung disease in children with Cystic Fibrosis (CF), exhibit a higher resistance to antibiotics and co-colonize more commonly with Pseudomonas aeruginosa compared to the normal phenotype. The prevalence of SCVs in lower airway specimens from children with CF is largely unknown. METHODS: Each visible morphotype of S. aureus was subcultured onto horse blood agar (HBA) to enable identification of SCVs...
March 22, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28327457/beta2-adrenergic-receptor-gene-haplotypes-and-bronchodilator-response-in-egyptian-patients-with-chronic-obstructive-pulmonary-disease
#18
Mohammad H Hussein, Khaled E Sobhy, Irene M Sabry, Ahmed T El Serafi, Eman A Toraih
PURPOSE: Chronic obstructive pulmonary disease (COPD) is a multi-factorial disorder caused by environmental determinants and genetic risk factors. Understanding the genetic predisposition of COPD is essential to develop personalized treatment regimens. Beta2-adrenergic receptor (ADRB2) gene polymorphisms have been implicated in the pathogenesis of obstructive pulmonary diseases. This study was conducted to assess the genetic association between Arg16Gly and Gln27Glu polymorphisms and COPD in the Egyptian patients, and to analyze their impact on the clinical outcome and therapeutic response...
March 16, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28326958/persistent-left-superior-vena-cava
#19
Vrinda Nair, Kamran Yusuf, Weiming Yu, Hafez AlAwad, Kathy Paul, Essa Al Awad
Persistent left superior vena cava (PLSVC) is a common cardiac anomaly associated with congenital heart diseases. A diagnosis of PLSVC usually warrants a detailed fetal echocardiography. Lesser known associations are the extra cardiac anomalies notably the upper airway and the gastrointestinal tract anomalies. We highlight here the importance of detailed fetal assessment for extra cardiac anomalies in addition to fetal echocardiography in fetuses diagnosed with PLSVC. We hereby present a preterm infant who presented with a triad of PLSVC, laryngeal atresia, and esophageal atresia...
March 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28326803/when-is-an-alveolar-type-2-cell-an-alveolar-type-2-cell-a-conundrum-for-lung-stem-cell-biology-and-regenerative-medicine
#20
Michael F Beers, Yuben Moodley
Generating mature, differentiated, adult lung cells from pluripotent cells such as induced pluripotent cells (iPS) and embryonic stem cells (ES) offers the hope of both generating disease specific in vitro models and creating definitive and personalized therapies for a host of debilitating lung parenchymal and airway diseases. With the goal of advancing lung regenerative medicine, several groups have developed and reported on protocols utilizing either defined media, co-culture with mesenchymal components, or sequential treatments mimicking lung development, to obtain distal lung epithelial cells from stem cell precursors...
March 22, 2017: American Journal of Respiratory Cell and Molecular Biology
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