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https://www.readbyqxmd.com/read/27913423/bronchodilatory-effect-of-deep-inspiration-in-freshly-isolated-sheep-lungs
#1
William D Wong, Lu Wang, Peter D Paré, Chun Y Seow
Taking a big breath is known to reverse bronchoconstriction induced by bronchochallenge in healthy subjects; this bronchodilatory effect of deep inspiration (DI) is diminished in asthmatics. The mechanism underlying the DI effect is not clear. Observations from experiments using isolated airway smooth muscle (ASM) preparations and airway segments suggest that straining of ASM due to DI could lead to bronchodilation, possibly due to strain-induced reduction in ASM contractility. However, factors external to the lung cannot be excluded as potential causes for the DI effect...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27912982/should-recommendations-about-starting-inhaled-corticosteroid-treatment-for-mild-asthma-be-based-on-symptom-frequency-a-post-hoc-efficacy-analysis-of-the-start-study
#2
Helen K Reddel, William W Busse, Søren Pedersen, Wan C Tan, Yu-Zhi Chen, Carin Jorup, Dan Lythgoe, Paul M O'Byrne
BACKGROUND: Low-dose inhaled corticosteroids (ICS) are highly effective for reducing asthma exacerbations and mortality. Conventionally, ICS treatment is recommended for patients with symptoms on more than 2 days per week, but this criterion has scant evidence. We aimed to assess the validity of the previous symptom-based cutoff for starting ICS by establishing whether there was a differential response to budesonide versus placebo for severe asthma exacerbations, lung function, and asthma symptom control across subgroups identified by baseline asthma symptom frequency...
November 29, 2016: Lancet
https://www.readbyqxmd.com/read/27908846/the-effectiveness-of-web-based-asthma-self-management-system-my-asthma-portal-map-a-pilot-randomized-controlled-trial
#3
Sara Ahmed, Pierre Ernst, Susan J Bartlett, Marie-France Valois, Tasneem Zaihra, Guy Paré, Roland Grad, Owis Eilayyan, Robert Perreault, Robyn Tamblyn
BACKGROUND: Whether Web-based technologies can improve disease self-management is uncertain. My Asthma Portal (MAP) is a Web-based self-management support system that couples evidence-based behavioral change components (self-monitoring of symptoms, physical activity, and medication adherence) with real-time monitoring, feedback, and support from a nurse case manager. OBJECTIVE: The aim of this study was to compare the impact of access to a Web-based asthma self-management patient portal linked to a case-management system (MAP) over 6 months compared with usual care on asthma control and quality of life...
December 1, 2016: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/27906453/syk-inhibition-blocks-airway-constriction-and-protects-from-th2-induced-airway-inflammation-and-remodeling-in-mice
#4
Christoph Tabeling, Julia Herbert, Andreas C Hocke, David Lamb, Lutz Wollin, Klaus Erb, Ekaterina Boiarina, Hesam Movassagh, Jörg Scheffel, Jan M Doehn, Stefan Hippenstiel, Marcus Maurer, Abdelilah S Gounni, Wolfgang M Kuebler, Norbert Suttorp, Martin Witzenrath
BACKGROUND: Spleen tyrosine kinase (Syk) is an intracellular non-receptor tyrosine kinase, which has been implicated as central immune modulator promoting allergic airway inflammation. Syk inhibition has been proposed as a new therapeutic approach in asthma. However, the direct effects of Syk inhibition on airway constriction independent of allergen sensitization remain elusive. METHODS: Spectral confocal microscopy of human and murine lung tissue was performed to localize Syk expression...
December 1, 2016: Allergy
https://www.readbyqxmd.com/read/27904303/pharmacological-management-and-prevention-of-exacerbations-of-chronic-obstructive-pulmonary-disease-in-hospitalized-patients
#5
Deepali Dixit, Mary Barna Bridgeman, Rani Patel Madduri, Samir T Kumar, Michael J Cawley
Rapid-acting bronchodilators, systemic corticosteroids, and antibiotics are among the keys to managing exacerbations of chronic obstructive pulmonary disease. Preventing exacerbations should also be a component of therapy for the disease.
November 2016: P & T: a Peer-reviewed Journal for Formulary Management
https://www.readbyqxmd.com/read/27899011/nasal-lavage-blood-or-sputum-which-is-best-for-phenotyping-asthma
#6
Camyla F de Farias, Maria M F Amorim, Michel Dracoulakis, Lilian B Caetano, Ilka L Santoro, Ana L G Fernandes
BACKGROUND AND OBJECTIVE: Determination of asthma phenotypes, particularly inflammatory phenotypes, helps guide treatment and management of this heterogeneous disease. Induced sputum cytology has been the gold standard for determination of inflammatory phenotypes, but sputum induction is fairly invasive and technically challenging. Blood and nasal lavage cytology have been suggested as substitutes, but have not been fully verified. The aim of this study is to determine the accuracy of blood and nasal lavage cytometry as indicators of inflammatory phenotypes in asthma...
November 29, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27895950/endobronchial-carcinoid-and-concurrent-carcinoid-syndrome-in-an-adolescent-female
#7
Jonathan D Cogen, Jonathan Swanson, Thida Ong
Endobronchial carcinoid tumors are the most common intrabronchial tumors in children and adolescents. Common signs and symptoms include persistent cough and wheezing not responsive to bronchodilators, hemoptysis, and recurrent fever. Diagnosis is frequently made by imaging and direct visualization with flexible bronchoscopy; surgery remains the gold standard treatment, and lung-sparing resections should be performed whenever possible. Though carcinoid syndrome-characterized by flushing, palpitations, wheezing, shortness of breath, and diarrhea-has been found in association with adult bronchial carcinoid tumors, to our knowledge only one previous study has reported the presence of carcinoid syndrome in a pediatric patient with an endobronchial carcinoid...
2016: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/27894875/effect-of-bronchodilators-in-healthy-individuals-receiving-lumacaftor-ivacaftor-combination-therapy
#8
Gautham Marigowda, Fang Liu, David Waltz
In an open-label, single-center phase 1 pharmacokinetic study in healthy subjects who received lumacaftor (LUM) in combination with ivacaftor (IVA), review of spirometry data showed a transient decline in percent predicted forced expiratory volume in 1s (ppFEV1) within 4h of drug administration. An additional cohort of healthy subjects with normal baseline ppFEV1 values was studied to evaluate the ppFEV1 response to LUM/IVA administration and assess the effect of long-acting bronchodilators (LABDs) and short-acting bronchodilators (SABDs) on ppFEV1 response...
November 25, 2016: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/27892597/a-multi-center-study-on-anaphylaxis-caused-by-peanut-tree-nuts-and-seeds-in-children-and-adolescents
#9
Kyunguk Jeong, So-Yeon Lee, Kangmo Ahn, Jihyun Kim, Hae-Ran Lee, Dong In Suh, Bok-Yang Pyun, Taek Ki Min, Ji-Won Kwon, Kyu-Earn Kim, Kyung Won Kim, Myung Hyun Sohn, Yoon Hee Kim, Tae Won Song, Jung Hyun Kwon, You Hoon Jeon, Hyung Young Kim, Jeong Hee Kim, Young Min Ahn, Sooyoung Lee
Peanut (PN) and tree nuts (TNs) are common causes of anaphylaxis in Western countries but no information is available in Korea. To feature clinical characteristics of anaphylaxis caused by PN, TNs, and seeds, a retrospective medical record review was performed in 14 university hospitals in Korea (2009-2013).One hundred and twenty-six cases were identified, with the mean age of 4.9 years. PN, walnut (WN), and pine nut accounted for 32.5%, 41.3%, and 7.1%, respectively. The median values of specific IgE (sIgE) to PN, WN and pine nut were 10...
November 28, 2016: Allergy
https://www.readbyqxmd.com/read/27892438/comparison-of-initial-response-of-nebulized-salbutamol-and-adrenaline-in-infants-and-young-children-admitted-with-acute-bronchiolitis
#10
S Adhikari, P Thapa, K S Rao, G Bk
Background Acute bronchiolitis is common cause of hospitalization in infants and young children. There are widespread variations in the diagnosis and management. Despite the use of bronchodilators for decades, there is lack of consensus for the benefit of one above another. Objective To compare initial response of nebulized adrenaline and salbutamol. Method Children aged two months to two years admitted with acute bronchiolitis in the department of Paediatrics of Manipal teaching hospital, Pokhara, Nepal, from 1st March 2014 to 28th February 2015 were enrolled...
January 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/27890625/pharmacological-treatment-optimization-for-stable-chronic-obstructive-pulmonary-disease-proposals-from-the-soci%C3%A3-t%C3%A3-de-pneumologie-de-langue-fran%C3%A3-aise
#11
M Zysman, F Chabot, P Devillier, B Housset, C M Panzini, N Roche
The Société de Pneumologie de Langue Française proposes a decision algorithm on long-term pharmacological COPD treatment. A working group reviewed the literature published between January 2009 and May 2016. This document lays out proposals and not guidelines. It only focuses on pharmacological treatments except vaccinations, smoking cessation treatments and oxygen therapy. Any COPD diagnosis, based on pulmonary function tests, should lead to recommend smoking cessation, vaccinations, physical activity, pulmonary rehabilitation in case of activity limitation, and short-acting bronchodilators...
November 24, 2016: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/27889361/adult-bronchiectasis-patients-a-first-look-at-the-united-states-bronchiectasis-research-registry
#12
Timothy R Aksamit, Anne E O'Donnell, Alan Barker, Kenneth N Olivier, Kevin L Winthrop, M Leigh Anne Daniels, Margaret Johnson, Edward Eden, David Griffith, Michael Knowles, Mark Metersky, Matthias Salathe, Byron Thomashow, Gregory Tino, Gerard Turino, Betsy Carretta, Charles L Daley
OBJECTIVE: We sought to describe the characteristics of adult bronchiectasis patients enrolled in the United States Bronchiectasis Research Registry (BRR). METHODS: The BRR is a database of non-cystic fibrosis bronchiectasis (NCFB) patients enrolled at 13 sites within the United States. Baseline demographic, spirometric, imaging, microbiologic, and therapeutic data were entered into a central web-based database. Patients were subsequently analyzed by the presence NTM...
November 23, 2016: Chest
https://www.readbyqxmd.com/read/27888993/identifying-biomarkers-for-asthma-diagnosis-using-targeted-metabolomics-approaches
#13
William Checkley, Maria P Deza, Jost Klawitter, Karina M Romero, Jelena Klawitter, Suzanne L Pollard, Robert A Wise, Uwe Christians, Nadia N Hansel
BACKGROUND: The diagnosis of asthma in children is challenging and relies on a combination of clinical factors and biomarkers including methacholine challenge, lung function, bronchodilator responsiveness, and presence of airway inflammation. No single test is diagnostic. We sought to identify a pattern of inflammatory biomarkers that was unique to asthma using a targeted metabolomics approach combined with data science methods. METHODS: We conducted a nested case-control study of 100 children living in a peri-urban community in Lima, Peru...
December 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27887950/cyslt2-receptor-activation-is-involved-in-ltc4-induced-lung-air-trapping-in-guinea-pigs
#14
Tomohiko Sekioka, Michiaki Kadode, Yasuo Yonetomi, Akihiro Kamiya, Manabu Fujita, Takeshi Nabe, Kazuhito Kawabata
CysLT1 receptors are known to be involved in the pathogenesis of asthma. However, the functional roles of CysLT2 receptors in this condition have not been determined. The purpose of this study is to develop an experimental model of CysLT2 receptor-mediated LTC4-induced lung air-trapping in guinea pigs and use this model to clarify the mechanism underlying response to such trapping. Because LTC4 is rapidly converted to LTD4 by γ-glutamyltranspeptidase (γ-GTP) under physiological conditions, S-hexyl GSH was used as a γ-GTP inhibitor...
November 22, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27885562/respiratory-syncytial-virus-and-influenza-are-the-key-viral-pathogens-in-children-2%C3%A2-years-hospitalized-with-bronchiolitis-and-pneumonia-in-islamabad-pakistan
#15
Uzma Bashir, Nadia Nisar, Yasir Arshad, Muhammad Masroor Alam, Asiya Ashraf, Hajra Sadia, Birjees Mazher Kazi, Syed Sohail Zahoor Zaidi
Pneumonia remains a leading cause of morbidity and mortality in developing countries. Comprehensive surveillance data are needed to review the prevention and control strategies. We conducted active surveillance of acute lower respiratory infections among children aged <2 years hospitalized at two hospitals of Islamabad, Pakistan. Viral etiology was determined using real-time PCR on respiratory specimens collected during March 2011-April 2012. The overall mean age was 7.83 ± 5.25 months while no statistical difference between age or sex distribution of patients with positive and negative viral etiology (p > 0...
November 24, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27885204/genetic-interactions-between-adrb2-and-ptger4-on-responses-to-salmeterol-or-montelukast-in-japanese-patients-with-mild-persistent-asthma
#16
Hideyasu Yamada, Hironori Masuko, Toshihide Inui, Jun Kanazawa, Yohei Yatagai, Tohru Sakamoto, Hiroaki Iijima, Satoshi Konno, Kaoruko Shimizu, Hironi Makita, Masaharu Nishimura, Fumio Kokubu, Takefumi Saito, Takeo Endo, Hiroki Ninomiya, Norihiro Kaneko, Nobuyuki Hizawa
BACKGROUND: Long-acting β2-agonists (LABA) and leukotriene receptor antagonists (LTRA) are two principal agents that can be added to inhaled corticosteroids (ICS) for patients with asthma that is not adequately controlled by ICS alone. In our previous study, the Gly16Arg genotype of the β2-adrenergic receptor (ADRB2) gene did not influence the differential bronchodilator effect of salmeterol versus montelukast as an add-on therapy to ICS within 16 weeks of follow-up (the J-Blossom study)...
2016: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/27882804/a-comparison-of-high-frequency-chest-wall-oscillation-and-intrapulmonary-percussive-ventilation-for-airway-clearance-in-pediatric-patients-with-tracheostomy
#17
Aneela Bidiwala, Linda Volpe, Claudia Halaby, Melissa Fazzari, Christina Valsamis, Melodi Pirzada
OBJECTIVES: The aim of this study was to compare two modes of airway clearance, the intrapulmonary percussive ventilation system (IPV) to high frequency chest wall oscillation system (HFCWO) in medically complex pediatric patients with tracheostomy requiring long term care. METHODS: This was a single center, retrospective study comparing the number of respiratory illnesses, lower respiratory tract infections (LRTI), utilization of bronchodilator and systemic steroids, and respiratory illnesses requiring acute care hospitalizations...
November 24, 2016: Postgraduate Medicine
https://www.readbyqxmd.com/read/27880056/bronchial-biopsy-and-reactivity-in-patients-with-chest-tightness-relieved-with-bronchodilator
#18
Hirokazu Taniguchi, Hideaki Furuse, Yuko Nakanishi, Takeshi Tsuda, Kiyoto Totsuka, Yasuaki Masaki, Kensuke Suzuki, Shin Ishizawa, Hideki Miyazawa
OBJECTIVE: It has been hypothesized that some patients with chest tightness of unknown origin can be successfully treated with a bronchodilator and that they should be diagnosed with chest pain variant asthma. We conducted a prospective study to characterize newly diagnosed patients with chest tightness relieved with bronchodilator use and without characteristic bronchial asthma attacks. METHODS: Eleven patients were registered following recurrent positive responses of chest tightness to inhalation of a ß2-agonist...
November 23, 2016: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/27878470/%C3%AE-2-agonists
#19
Charlotte K Billington, Raymond B Penn, Ian P Hall
History suggests β agonists, the cognate ligand of the β2 adrenoceptor, have been used as bronchodilators for around 5,000 years, and β agonists remain today the frontline treatment for asthma and chronic obstructive pulmonary disease (COPD). The β agonists used clinically today are the products of significant expenditure and over 100 year's intensive research aimed at minimizing side effects and enhancing therapeutic usefulness. The respiratory physician now has a therapeutic toolbox of long acting β agonists to prophylactically manage bronchoconstriction, and short acting β agonists to relieve acute exacerbations...
November 23, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27877033/combination-therapy-of-inhaled-steroids-and-long-acting-beta2-agonists-in-asthma-copd-overlap-syndrome
#20
Suh-Young Lee, Hye Yun Park, Eun Kyung Kim, Seong Yong Lim, Chin Kook Rhee, Yong Il Hwang, Yeon-Mok Oh, Sang Do Lee, Yong Bum Park
BACKGROUND: The efficacy of inhaled corticosteroids (ICSs)/long-acting beta2-agonist (LABA) treatment in patients with asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) compared to patients with COPD alone has rarely been examined. This study aimed to evaluate the clinical efficacy for the improvement of lung function after ICS/LABA treatment in patients with ACOS compared to COPD alone patients. METHODS: Patients with stable COPD were selected from the Korean Obstructive Lung Disease (KOLD) cohort...
2016: International Journal of Chronic Obstructive Pulmonary Disease
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