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https://www.readbyqxmd.com/read/29457316/assessment-of-pulmonary-structure-function-relationships-in-young-children-and-adolescents-with-cystic-fibrosis-by-multivolume-proton-mri-and-ct
#1
Francesca Pennati, David J Roach, John P Clancy, Alan S Brody, Robert J Fleck, Andrea Aliverti, Jason C Woods
BACKGROUND: Lung disease is the most frequent cause of morbidity and mortality in patients with cystic fibrosis (CF), and there is a shortage of sensitive biomarkers able to regionally monitor disease progression and to assess early responses to therapy. PURPOSE: To determine the feasibility of noncontrast-enhanced multivolume MRI, which assesses intensity changes between expiratory and inspiratory breath-hold images, to detect and quantify regional ventilation abnormalities in CF lung disease, with a focus on the structure-function relationship...
February 19, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29457137/correcting-nonpathological-variation-in-longitudinal-parametric-response-maps-of-ct-scans-in-copd-subjects-spiromics
#2
Antonio Fernández-Baldera, Charles R Hatt, Susan Murray, Eric A Hoffman, Ella A Kazerooni, Fernando J Martinez, MeiLan K Han, Craig J Galbán
Small airways disease (SAD) is one of the leading causes of airflow limitations in patients diagnosed with chronic obstructive pulmonary disease (COPD). Parametric response mapping (PRM) of computed tomography (CT) scans allows for the quantification of this previously invisible COPD component. Although PRM is being investigated as a diagnostic tool for COPD, variability in the longitudinal measurements of SAD by PRM has been reported. Here, we show a method for correcting longitudinal PRM data because of non-pathological variations in serial CT scans...
September 2017: Tomography: a Journal for Imaging Research
https://www.readbyqxmd.com/read/29457114/a-pediatric-case-developing-critical-abdominal-distension-caused-by-a-combination-of-humidified-high-flow-nasal-cannula-oxygen-therapy-and-nasal-airway
#3
Satoki Inoue, Yumiko Tamaki, Shota Sonobe, Junji Egawa, Masahiko Kawaguchi
Background: We describe a pediatric patient who suffered from critical abdominal distention caused by a combination of humidified, high-flow nasal cannula (HHFNC) oxygen therapy and nasal airway. Case presentation: A 21-month-old boy with a history of chronic lung disease was admitted to the intensive care unit (ICU). Immediately after admission, his airway was established using a tracheal tube and mechanical ventilation was started. Five days after the commencement of mechanical ventilation, finally, his trachea was extubated...
2018: JA Clin Rep
https://www.readbyqxmd.com/read/29456938/deep-neck-space-infections-a-study-in-diabetic-population-in-a-tertiary-care-centre
#4
Kalpana Sharma, Devjani Das, Manish Joshi, Dipjyoti Barman, A J Sarma
This study is intended to analyze the clinical profile and outcomes of deep neck space infection in diabetic patients in our tertiary care centre. A prospective study of 1 year duration from 30th September 2015 to 30th September 2016 at department of Otorhinolaryngology, Gauhati Medical College and Hospital, Guwahati. A total of 45 diabetic patients who presented with DNSI are included in this study. Their demographic profile, etiology, bacteriology, treatment, duration of hospital stay, complications and outcomes have been analyzed...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456774/gastric-aspiration-and-its-role-in-airway-inflammation
#5
REVIEW
E B Hunt, A Sullivan, J Galvin, J MacSharry, D M Murphy
Gastro-Oesophageal Reflux (GOR) has been associated with chronic airway diseases while the passage of foreign matter into airways and lungs through aspiration has the potential to initiate a wide spectrum of pulmonary disorders. The clinical syndrome resulting from such aspiration will depend both on the quantity and nature of the aspirate as well as the individual host response. Aspiration of gastric fluids may cause damage to airway epithelium, not only because acidity is toxic to bronchial epithelial cells but also due to the effect of digestive enzymes such as pepsin and bile salts...
2018: Open Respiratory Medicine Journal
https://www.readbyqxmd.com/read/29456676/-cordyceps-sinensis-inhibits-airway-remodeling-in-rats-with-chronic-obstructive-pulmonary-disease
#6
Lei Yang, Xingai Jiao, Jinxiang Wu, Jiping Zhao, Tian Liu, Jianfeng Xu, Xiaohui Ma, Liuzao Cao, Lin Liu, Yahui Liu, Jingyu Chi, Minfang Zou, Shuo Li, Jiawei Xu, Liang Dong
Cordyceps sinensis is a traditional Chinese herbal medicine that has been used for centuries in Asia as a tonic to soothe the lung for the treatment of respiratory diseases. The aim of the present study was to determine the effects of C. sinensi s on airway remodeling in chronic obstructive pulmonary disease (COPD) and investigate the underlying molecular mechanisms. Rats with COPD were orally administered C. sinensis at low, moderate or high doses (2.5, 5 or 7.5 g/kg/day, respectively) for 12 weeks. Airway tissue histopathology, lung inflammation and airway remodeling were evaluated...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456664/jinwei-tang-modulates-hdac2-expression-in-a-rat-model-of-copd
#7
Jianjun Wu, Xin Li, Yang Qin, Juan Cheng, Gaimei Hao, Ruifeng Jin, Chenjun Zhu
The aim of the present study was to investigate the effect of a Traditional Chinese Herbal Medicine (TCHM), named Jinwei Tang on histone deacetylase 2 (HDAC2) and its role in the regulation of corticosteroid resistance in a rat model of chronic obstructive pulmonary disease (COPD). Male Wistar rats were divided into five groups (each n=10): COPD group, established by the intratracheal instillation of lipopolysaccharide and passive smoke exposure, and control, budesonide, theophylline + budesonide and Jinwei Tang + budesonide groups...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456654/establishment-of-different-experimental-asthma-models-in-mice
#8
Qian-Lin Yu, Zhangbo Chen
Asthma is a complex disease. The heterogeneity of airway inflammation during asthma indicates there are different mechanisms involved. In order to further study the mechanisms of asthma, different mouse models were established to mimic corresponding subtypes of asthma in clinic. Eosinophilic asthma was established by intraperitoneal injections of ovalbumin (OVA) on day 0 and day 7, followed by inhalation of aerosolized OVA on days 14-17. Neutrophilic asthma was established by transtracheal administration of a high dose of lipopolysaccharide (LPS; 10 µg) on days 15 and 17 in combination with OVA sensitization and challenge as described previously...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456554/compound-heterozygous-variants-in-the-coiled-coil-domain-containing-40-gene-in-a-chinese-family-with-primary-ciliary-dyskinesia-cause-extreme-phenotypic-diversity-in-cilia-ultrastructure
#9
Lin Yang, Santasree Banerjee, Jie Cao, Xiaohong Bai, Zhijun Peng, Haixia Chen, Hui Huang, Peng Han, Shunyu Feng, Na Yi, Xueru Song, Jing Wu
Purpose: Primary ciliary dyskinesia (PCD) is a rare genetic disorder manifested with recurrent infections of respiratory tract and infertility. Mutations in more than 20 genes including the Coiled-Coil Domain Containing 40 ( CCDC40 ) gene are associated with PCD. A Chinese proband with a clinical diagnosis of PCD was analyzed for mutations in these genes to identify the genetic basis of the disease in the family. The proband showed altered mucociliary clearance of the airways, various degree of hyperemia and edema of the mucous membrane, left/right body asymmetry, infertility and ultrastructural abnormality of cilia in both sperm and bronchioles...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29455573/a-creb-mediated-increase-in-mirna-let-7f-during-prolonged-%C3%AE-agonist-exposure-a-novel-mechanism-of-%C3%AE-2-adrenergic-receptor-down-regulation-in-airway-smooth-muscle
#10
Donghwa Kim, Soomin Cho, Jung A Woo, Stephen B Liggett
β2 -Adrenergic receptors (β2 ARs) desensitize during continuous agonist activation, which manifests clinically as tachyphylaxis. β-Agonist desensitization of β2 ARs in human airway smooth muscle (HASM) cells is recognized in the treatment of asthma and may be related to poor outcomes. Rapid events in desensitization include receptor phosphorylation and internalization, but mechanisms responsible for the decrease in receptor protein after prolonged agonist exposure (down-regulation) are ill defined. The microRNA (miRNA) let-7f regulates β2 AR expression by translational repression...
February 13, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29455359/eosinophilic-esophagitis-an-important-comorbid-condition-of-asthma
#11
REVIEW
Sandy R Durrani, Vincent A Mukkada, Theresa W Guilbert
Eosinophilic esophagitis and asthma are frequently found as comorbid conditions in children and adults along with other manifestations of atopic diathesis. These two conditions have similar T helper 2 responses-driven pathophysiology and share common management strategies such as using systemic corticosteroids and targeted anti-cytokine biologic therapies. Review of the literature finds that asthma is often a comorbid condition in eosinophilic esophagitis in both children and adults; however, the EoE-asthma relationship remains poorly characterized mechanistically and clinically...
February 18, 2018: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29454752/effects-of-5-ht-2-receptor-antagonists-on-bronchoconstriction-and-pulmonary-remodeling-processes
#12
Anna Löfdahl, Christina Wenglén, Kristina Rydell-Törmänen, Gunilla Westergren-Thorsson, Anna-Karin Larsson-Callerfelt
Serotonin (5-hydroxytryptamine, 5-HT) is associated with several chronic pulmonary diseases, recognizing 5-HT2 receptor antagonists as potential inhibitors of tissue remodeling. However, the effects of 5-HT2 receptors, especially, 5-HT2B receptors on airway function and remodeling, are unclear. We investigated the role of 5-HT2B receptors on airway smooth muscle contractility and remodeling processes. Murine precision-cut lung slices were pre-treated with 5-HT2B receptor antagonists; EXT5, EXT9, RS127445, and PRX08066, as well as ketanserin (5-HT2A/2C receptor antagonist) (1 μM, 10 μM), prior to addition of cumulative concentrations of 5-HT to induce bronchoconstriction...
February 15, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29454302/aerobic-exercise-inhibits-obesity-induced-respiratory-phenotype
#13
Jefferson Comin Jonco Aquino-Junior, BreAnne MacKenzie, Ana Roberta Almeida-Oliveira, Ana Carolina Martins, Manoel Carneiro Oliveira-Junior, Auriléa Aparecida Britto, Fernanda Magalhaes Arantes-Costa, Nilsa Regina Damaceno-Rodrigues, Elia Garcia Caldini, Ana Paula Ligeiro de Oliveira, Dioze Guadagnini, Luiz Osorio Leiria, Djalma Rabelo Ricardo, Mario Jose Abdalla Saad, Rodolfo Paula Vieira
PURPOSE: Obesity results in decreased lung function and increased inflammation. Moderate aerobic exercise (AE) reduced lung inflammation and remodeling in a variety of respiratory disease models. Therefore, this study investigated whether AE can attenuate a diet-induced obesity respiratory phenotype; including airway hyper-responsiveness (AHR), remodeling and inflammation. METHODS: Sixty C57Bl/6 male mice were distributed into four groups: control lean (CL), exercise lean (EL), obese (O) and obese exercise (OE) groups (2 sets of 7 and 8 mice per group; n = 15)...
February 14, 2018: Cytokine
https://www.readbyqxmd.com/read/29453905/sleep-apnea-and-type-2-diabetes
#14
Isao Muraki, Hiroo Wada, Takeshi Tanigawa
The aim of this review is to clarify the association between obstructive sleep apnea (OSA) and type 2 diabetes, and discuss the therapeutic role of continuous positive airway pressure (CPAP) in type 2 diabetes. OSA patients are more likely than non-OSA populations to develop type 2 diabetes while more than half of patients with type 2 diabetes suffer from OSA. Similarly to the Western countries, in the East Asian population, the association between these two disorders has also been reported. CPAP is the primary treatment for OSA, but the effect of CPAP on comorbid diabetes has not been established...
February 17, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29453651/neurotrophins-in-asthma
#15
REVIEW
Juliana Barrios, Xingbin Ai
PURPOSE OF REVIEW: Asthma is a chronic airway disease that affects more than 300 million people worldwide. Current treatment focuses on symptomatic relief by temporally dampening inflammation and relaxing the airway. Novel combative strategies against asthma and hopefully a cure are yet to be developed. The goal of this review is to summarize recent literature on neurotrophins (NTs) in experimental models and clinical settings of asthma research. RECENT FINDINGS: We highlight studies of early phases of asthma that collectively reveal a profound impact of elevated NT levels following initial detrimental insults on long-term airway dysfunction...
February 16, 2018: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/29453639/upper-airway-obstruction-induced-by-non-invasive-ventilation-using-an-oronasal-interface
#16
Valentin Schellhas, Christian Glatz, Ingo Beecken, Angelika Okegwo, Anna Heidbreder, Peter Young, Matthias Boentert
BACKGROUND: On initiation of long-term non-invasive ventilation (NIV), intermittent upper airway obstruction has rarely been described as possibly treatment-induced. Inspiratory pressure effects and the use of an oronasal interface may promote obstructive events in some patients with neuromuscular disease (NMD) and amyotrophic lateral sclerosis (ALS) in particular. METHODS: We evaluated clinical data from 212 patients in whom NIV was initiated using an oronasal mask...
February 17, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29453280/elevated-expression-of-il-33-and-tslp-in-the-airways-of-human-asthmatics-in-vivo-a-potential-biomarker-of-severe-refractory-disease
#17
Yan Li, Wei Wang, Zhe Lv, Yun Li, Yan Chen, Kewu Huang, Chris J Corrigan, Sun Ying
The epithelial cytokines IL-33, thymic stromal lymphopoietin (TSLP), and IL-25 have been implicated in asthma pathogenesis because they promote Th2-type cytokine synthesis, but their expression is relatively poorly documented in "real-life" human asthma. Using bronchoalveolar lavage fluid (BALF), we measured airway concentrations of these mediators and compared them with those of Th1- and Th2-type cytokines, airway infiltration of neutrophils and eosinophils, and lung function in a large group of asthmatic patients with a range of disease severity ( n = 70) and control subjects ( n = 30)...
February 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29451705/modeling-asthma-pitfalls-promises-and-the-road-ahead
#18
REVIEW
Helene F Rosenberg, Kirk M Druey
Asthma is a chronic, heterogeneous, and recurring inflammatory disease of the lower airways, with exacerbations that feature airway inflammation and bronchial hyperresponsiveness. Asthma has been modeled extensively via disease induction in both wild-type and genetically manipulated laboratory mice (Mus musculus). Antigen sensitization and challenge strategies have reproduced numerous important features of airway inflammation characteristic of human asthma, notably the critical roles of type 2 T helper cell cytokines...
February 16, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29450204/ppars-key-regulators-of-airway-inflammation-and-potential-therapeutic-targets-in-asthma
#19
Asoka Banno, Aravind T Reddy, Sowmya P Lakshmi, Raju C Reddy
Asthma affects approximately 300 million people worldwide, significantly impacting quality of life and healthcare costs. While current therapies are effective in controlling many patients' symptoms, a large number continue to experience exacerbations or treatment-related adverse effects. Alternative therapies are thus urgently needed. Accumulating evidence has shown that the peroxisome proliferator-activated receptor (PPAR) family of nuclear hormone receptors, comprising PPARα, PPARβ/δ, and PPARγ, is involved in asthma pathogenesis and that ligand-induced activation of these receptors suppresses asthma pathology...
2018: Nuclear Receptor Research
https://www.readbyqxmd.com/read/29449669/predictive-biomarkers-of-gastroesophageal-reflux-disease-and-barrett-s-esophagus-in-world-trade-center-exposed-firefighters-a-15-year-longitudinal-study
#20
Syed H Haider, Sophia Kwon, Rachel Lam, Audrey K Lee, Erin J Caraher, George Crowley, Liqun Zhang, Theresa M Schwartz, Rachel Zeig-Owens, Mengling Liu, David J Prezant, Anna Nolan
Gastroesophageal reflux disease (GERD) and Barrett's Esophagus (BE), which are prevalent in the World Trade Center (WTC) exposed and general populations, negatively impact quality of life and cost of healthcare. GERD, a risk factor of BE, is linked to obstructive airways disease (OAD). We aim to identify serum biomarkers of GERD/BE, and assess the respiratory and clinical phenotype of a longitudinal cohort of never-smoking, male, WTC-exposed rescue workers presenting with pulmonary symptoms. Biomarkers collected soon after WTC-exposure were evaluated in optimized predictive models of GERD/BE...
February 15, 2018: Scientific Reports
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