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Respirology: Official Journal of the Asian Pacific Society of Respirology

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https://www.readbyqxmd.com/read/27917572/mannitol-challenge-testing-for-asthma-in-a-community-cohort-of-young-adults
#1
Elisha C White, Nicholas de Klerk, Zoltan Hantos, Monique Priston, Elysia M Hollams, Alan James, Peter D Sly, Patrick G Holt, Graham L Hall
BACKGROUND AND OBJECTIVE: Mannitol challenge testing is an established tool for clinical asthma diagnosis, and can be performed outside of specialized respiratory laboratories. Despite applicability in both clinical and non-clinical populations, with different pre-test asthma probabilities, differences in diagnostic properties have not been well explored. This study aimed to quantify the diagnostic utility of mannitol challenge testing for asthma in a community cohort and a symptomatic wheezing subset of this cohort...
December 5, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27905186/severe-asthma-current-management-targeted-therapies-and-future-directions-a-roundtable-report
#2
REVIEW
Vanessa M McDonald, Steven Maltby, Helen K Reddel, Gregory G King, Peter A B Wark, Lorraine Smith, John W Upham, Alan L James, Guy B Marks, Peter G Gibson
Asthma is a chronic respiratory disease characterized by respiratory symptoms, airway inflammation, airway obstruction and airway hyper-responsiveness. Asthma is common and directly affects 10% of Australians, 1-5% of adults in Asia and 300 million people worldwide. It is a heterogeneous disorder with many clinical, molecular, biological and pathophysiological phenotypes. Current management strategies successfully treat the majority of patients with asthma who have access to them. However, there is a subset of an estimated 5-10% of patients with asthma who have severe disease and are disproportionately impacted by symptoms, exacerbations and overall illness burden...
November 30, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27905165/severe-asthma-can-we-fix-it
#3
EDITORIAL
Vanessa M McDonald, Steven Maltby, Peter G Gibson
No abstract text is available yet for this article.
November 30, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27899011/nasal-lavage-blood-or-sputum-which-is-best-for-phenotyping-asthma
#4
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/27899005/angle-%C3%AE-of-greater-than-80%C3%A2-at-the-start-of-spirometry-may-identify-high-quality-flow-volume-curves
#5
Ningfang Lian, Li Li, Weiying Ren, Zhilong Jiang, Lei Zhu
BACKGROUND AND OBJECTIVE: The American Thoracic Society (ATS) and European Respiratory Society (ERS) emphasize a satisfactory start in maximal expiratory flow-volume (MEFV) curves and highlight subjective parameters: performance without hesitation and expiration with maximum force. We described a new parameter, angle β for characterization of the start to the MEFV curve. METHODS: Subjects completed the MEFV curve at least three times and at least two curves met ATS/ERS quality...
November 29, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27899000/adult-asthma-quick-reference-guides-trans-tasman-differences-in-opinion
#6
EDITORIAL
Richard Beasley, Darmiga Thayabaran, Robert J Hancox
No abstract text is available yet for this article.
November 29, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27889938/respirology-and-the-asia-pacific-century
#7
EDITORIAL
Philip Bardin, Paul Reynolds
No abstract text is available yet for this article.
November 27, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27886422/update-in-respiratory-sleep-disorders-prologue-to-a-modern-review-series
#8
EDITORIAL
Peter R Eastwood, Mary J Morrell, Atul Malhotra
No abstract text is available yet for this article.
November 25, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27886421/pathophysiology-of-dyspnoea-in-acute-pulmonary-embolism-a-cross-sectional-evaluation
#9
Olivier Sanchez, Aurore Caumont-Prim, Elisabeth Riant, Laurent Plantier, Martin Dres, Bruno Louis, Marie-Anne Collignon, Benoit Diebold, Guy Meyer, Claudine Peiffer, Christophe Delclaux
BACKGROUND AND OBJECTIVE: Dyspnoea in pulmonary embolism (PE) remains poorly characterized. Little is known about how to measure intensity or about the underlying mechanisms that may be related to ventilatory abnormalities, alveolar dead space ventilation or modulating factors such as psychological modulate. We hypothesized that dyspnoea would mainly be associated with pulmonary vascular obstruction and its pathophysiological consequences, while the sensory-affective domain of dyspnoea would be influenced by other factors...
November 25, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27882640/physiological-markers-of-exercise-capacity-and-lung-disease-severity-in-cystic-fibrosis
#10
Laurie Smith, Charles C Reilly, Victoria MacBean, Caroline J Jolley, Caroline Elston, John Moxham, Gerrard F Rafferty
BACKGROUND AND OBJECTIVE: Peak aerobic capacity (VO2 peak) is an important outcome measure in cystic fibrosis (CF), but measurement is not widely available and can be influenced by patient motivation, pain and fatigue. Alternative markers of disease severity would be helpful. Neural respiratory drive, measured using parasternal intercostal muscle electromyography (EMGpara), reflects the load to capacity balance of the respiratory system and provides a composite measure of pulmonary function impairment in CF...
November 24, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27879023/potential-effect-of-ezetimibe-against-mycobacterium-tuberculosis-infection-in-type-ii-diabetes
#11
I-Fang Tsai, Chiu-Ping Kuo, Andrew B Lin, Ming-Nan Chien, Hsin-Tsung Ho, Tsai-Yin Wei, Chien-Liang Wu, Yen-Ta Lu
BACKGROUND AND OBJECTIVE: Tuberculosis (TB) risk might be increased in patients with diabetes by factors other than hyperglycaemia, such as dyslipidaemia. Host lipids are essential energy sources used by mycobacteria to persist in a latent TB state. A potential therapy targeting cholesterol catabolism of mycobacteria has been proposed, but the potential of cholesterol-lowering drugs as anti-TB therapy is unclear. The purpose of this study was to determine the effects of ezetimibe, a 2-azetidinone cholesterol absorption inhibitor, on intracellular mycobacteria survival and dormancy...
November 23, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27878909/role-of-mcp-1-in-pleural-effusion-development-in-a-carrageenan-induced-murine-model-of-pleurisy
#12
Sally M Lansley, Hui Min Cheah, Y C Gary Lee
BACKGROUND AND OBJECTIVE: Exudative pleural effusions affect over 1500 patients per million population each year. The pathobiology of pleural exudate formation remains unclear. Our recent study revealed monocyte chemotactic protein-1 (MCP-1) as a key driver of fibrinolytic-induced exudate effusion while another study found a role for MCP-1 in malignant effusion formation. In the present study, we further evaluated the role of MCP-1 in the development of pleural effusion in a mouse model of acute pleural inflammation...
November 22, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27878892/influence-of-siglec9-polymorphisms-on-copd-phenotypes-including-exacerbation-frequency
#13
Takeo Ishii, Takashi Angata, Emily S Wan, Michael H Cho, Takashi Motegi, Congxiao Gao, Kazuaki Ohtsubo, Shinobu Kitazume, Akihiko Gemma, Peter D ParÉ, David A Lomas, Edwin K Silverman, Naoyuki Taniguchi, Kozui Kida
BACKGROUND AND OBJECTIVE: The exacerbation-prone phenotype of COPD is particularly important, as exacerbations lead to poor quality of life and disease progression. We previously found that COPD patients who lack Siglec-14, a myeloid cell protein that recognizes bacteria and triggers inflammatory responses, are less prone to exacerbation. We hypothesized that the variations in other SIGLEC genes could also influence COPD exacerbation frequency, and investigated the association between SIGLEC9 polymorphisms and the exacerbation-prone phenotype of COPD...
November 22, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27868303/fat-free-mass-index-predicts-survival-in-patients-with-idiopathic-pulmonary-fibrosis
#14
Osamu Nishiyama, Ryo Yamazaki, Hiroyuki Sano, Takashi Iwanaga, Yuji Higashimoto, Hiroaki Kume, Yuji Tohda
BACKGROUND AND OBJECTIVE: Detailed body composition, such as fat-free mass, has not been examined in idiopathic pulmonary fibrosis (IPF). We investigated whether the fat-free mass index (FFMI), an index of lean body mass, predicted survival. METHODS: Forty-four patients with IPF were enrolled in the study. Their body composition was assessed using direct segmental multi-frequency bioelectrical impedance analysis. The degree of correlation between variables of body composition and other variables such as forced vital capacity (FVC) and survival was examined...
November 21, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27868302/reduced-dna-methylation-of-sphingosine-1-phosphate-receptor-5-in-alveolar-macrophages-in-copd-a-potential-link-to-failed-efferocytosis
#15
Jameel Barnawi, Hubertus Jersmann, Rainer Haberberger, Sandra Hodge, Robyn Meech
BACKGROUND AND OBJECTIVE: We previously showed that alveolar macrophages from COPD patients are defective in their ability to phagocytose apoptotic cells ('efferocytosis') and that this defect is potentially linked to the sphingosine-1 phosphate (S1P) system, in particular the sphingosine-1 phosphate receptor 5 (S1PR5). In alveolar macrophages from COPD patients, S1PR5 mRNA expression levels increased and were correlated with both lung function and efferocytosis. However, it us unknown whether these changes are under epigenetic control via DNA methylation or whether DNA methylation directly modulates macrophage function...
November 20, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27860068/effect-of-osa-on-hypoxic-and-inflammatory-markers-during-cpap-withdrawal-further-evidence-from-three-randomized-control-trials
#16
Chris D Turnbull, Valentina A Rossi, Peter Santer, Esther I Schwarz, John R Stradling, Nayia Petousi, Malcolm Kohler
BACKGROUND AND OBJECTIVE: Obstructive sleep apnoea (OSA) is associated with cardiovascular disease. Intermittent hypoxia, endothelial dysfunction and adipose tissue-mediated inflammation have all been linked to cardiovascular disease in OSA. We therefore explored the effect of OSA on relevant associated blood markers: adrenomedullin (ADM), endocan, endothelin-1 (ET-1), resistin and vascular endothelial growth factor (VEGF). METHODS: Patients with OSA, established on and compliant with continuous positive airways pressure (CPAP) therapy for >1 year were included from three randomized controlled trials, conducted at two centres...
November 18, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27860040/lesion-heterogeneity-and-risk-of-infectious-complications-following-peripheral-endobronchial-ultrasound
#17
Marc Fortin, Niloofar Taghizadeh, Alex Chee, Christopher A Hergott, Elaine Dumoulin, Alain Tremblay, Paul MacEachern
BACKGROUND AND OBJECTIVE: The reported incidence of peripheral endobronchial ultrasound (pEBUS)-related infectious complications is below 1%, although studies have never focused solely on them or reported their risk factors. The goal of this study is to describe our local pEBUS infectious complication rate and characterize patient, lesion and procedural factors associated with infectious complications. METHODS: All charts, computed tomography scans and electronic records of patients who underwent a pEBUS at the Foothills Medical Center and South Health Campus Hospital in Calgary between 1 May 2014 and 1 October 2015 were reviewed...
November 18, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27860028/hrct-features-of-surgically-resected-invasive-mucinous-adenocarcinoma-associated-with-interstitial-pneumonia
#18
Atsushi Miyamoto, Atsuko Kurosaki, Takeshi Fujii, Kazuma Kishi, Sakae Homma
BACKGROUND AND OBJECTIVE: Lung cancer is prevalent among patients with interstitial pneumonia (IP). HRCT findings mucinous adenocarcinoma in patients with IP have not been described. METHODS: In 112 consecutive patients with 120 surgically resected IP-associated lung cancers, 42 patients had pathologically proven invasive adenocarcinoma (IA). A total of 14 out of 42 patients (10 men, 4 women, mean age, 68.4 years) had invasive mucinous adenocarcinoma. We reviewed the patients' medical records and HRCT scans...
November 18, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27862645/association-between-asthma-control-and-asthma-cost-results-from-a-longitudinal-study-in-a-primary-care-setting
#19
Hai V Nguyen, Nivedita V Nadkarni, Usha Sankari, Shweta Mital, Weng K Lye, Ngiap C Tan
BACKGROUND AND OBJECTIVE: Asthma control can be assessed with the Asthma Control Test (ACT) and a score of 20 or higher indicates good asthma control. Patients pay for their consultation and treatment in the fee-for-service primary healthcare system in Singapore. We hypothesized that achieving asthma control would result in lower asthma costs through reduced acute exacerbations, fewer physician consultations and lower lost productivity. The study compared the healthcare costs of patients who achieved asthma control and those with suboptimal asthma control based on ACT scores...
November 10, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27860036/frailty-is-common-and-strongly-associated-with-dyspnoea-severity-in-fibrotic-interstitial-lung-disease
#20
Kathryn M Milne, Joanne M Kwan, Sabina Guler, Tiffany A Winstone, Angela Le, Nasreen Khalil, Pat G Camp, Pearce G Wilcox, Christopher J Ryerson
BACKGROUND AND OBJECTIVE: Frailty is the age-related accumulation of deficits that decrease the ability to respond to biological stress. Patients with fibrotic interstitial lung disease (ILD) may be frail due to consequences of ILD, age, co-morbidities and adverse effects of pharmacotherapies. The objective of this study was to examine the prevalence and predictors of frailty in fibrotic ILD. METHODS: Fibrotic ILD patients were recruited from a specialized clinic...
November 9, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
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