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The Global Initiative for Asthma recommends as-needed inhaled corticosteroid (ICS)-formoterol as an alternative to maintenance ICS plus short-acting β -agonist (SABA) reliever at step 2 of its stepwise treatment algorithm. Our aim was to assess the efficacy and safety of these two treatment regimens, with a focus on prevention of severe exacerbation. We performed a systematic review and meta-analysis of all randomised controlled trials (RCTs) comparing as-needed ICS-formoterol with maintenance ICS plus SABA. MEDLINE, Embase, the Cochrane Central Register of Controlled Trials and Clinicaltrials.gov were searched from database inception to 12 December 2019. The primary outcome was time to first severe exacerbation. RCTs were excluded if they used as-needed budesonide-formoterol as part of a maintenance and reliever regimen, or did not report on severe exacerbations. The review is registered with PROSPERO (identifier number CRD42020154680). Four RCTs (n=8065 participants) were included in the analysis. As-needed ICS-formoterol was associated with a prolonged time to first severe exacerbation (hazard ratio 0.85, 95% CI 0.73-1.00; p=0.048) and reduced daily ICS dose (mean difference -177.3 μg, 95% CI -182.2--172.4 μg). Asthma symptom control was worse in the as-needed group (Asthma Control Questionnaire-5 mean difference 0.12, 95% CI 0.09-0.14), although this did not meet the minimal clinically important difference of 0.50 units. There was no significant difference in serious adverse events (OR 1.07, 95% CI 0.84-1.36). As-needed ICS-formoterol offers a therapeutic alternative to maintenance low-dose ICS plus SABA in asthma and may be the preferred option when prevention of severe exacerbation is the primary aim of treatment. As-needed ICS-formoterol offers a therapeutic alternative to maintenance low-dose ICS plus SABA in asthma and may be the preferred option when prevention of severe exacerbation is the primary aim of treatment.Higher body mass index (BMI) is associated with less severe airway obstruction in older asthma patients with fixed airflow obstruction. This is potentially mediated through BMI-related mechanisms that increase lung stiffness (i.e. reduce lung compliance). https//bit.ly/3jBwCNy.The aim was to determine whether losartan reduces cigarette smoke (CS)-induced airway inflammation and mucus hypersecretion in an in vitro model and a small clinical trial. Primary human bronchial epithelial cells (HBECs) were differentiated at the air-liquid interface (ALI) and exposed to CS. Expression of transforming growth factor (TGF)-β1 and the mucin MUC5AC, and expression or activity of matrix metalloproteinase (MMP)-9 were measured after CS exposure. Parameters of mucociliary clearance were evaluated by measuring airway surface liquid volumes, mucus concentrations, and conductance of cystic fibrosis transmembrane conductance regulator (CFTR) and large conductance, Ca2+-activated and voltage-dependent potassium (BK) channels. Nasal cells were collected from study participants and expression of MUC5AC, TGF-β1, and MMP-9 mRNAs was measured before and after losartan treatment. In vitro, CS exposure of HBECs caused a significant increase in mRNA expression of MUC5AC and TGF-β1 and MMP-9 activity and decreased CFTR and BK channel activities, thereby reducing airway surface liquid volumes and increasing mucus concentrations. Treatment of HBECs with losartan rescued CS-induced CFTR and BK dysfunction and caused a significant decrease in MUC5AC expression and mucus concentrations, partially by inhibiting TGF-β signalling. In a prospective clinical study, cigarette smokers showed significantly reduced mRNA expression levels of MUC5AC, TGF-β1, and MMP-9 in the upper airways after 2 months of losartan treatment. Our findings suggest that losartan may be an effective therapy to reduce inflammation and mucus hypersecretion in CS-induced chronic airway diseases.Standard bronchoscopy and EBUS-TBNA have good diagnostic yield and are relatively safe procedures in the setting of SVCS. However, complications may arise from the underlying malignancy and its proximity to central vital structures. https//bit.ly/37HXFUY.Multiple clinical conditions are combined with genetic mutations to contribute to the development of pulmonary vascular remodelling in hereditary haemorrhagic telangiectasia. A systematic aetiological evaluation is required for these patients. https//bit.ly/34V7HPy. Probiotic treatments might contribute to the prevention of ventilator-associated pneumonia (VAP). Due to its unclear clinical effects, here we intend to assess the preventive effect and safety of probiotics on intensive care unit (ICU) patients. Eligible randomised controlled trials were selected in databases until 30 September 2019. https://www.selleckchem.com/products/lenalidomide-s1029.html The characteristics of the studies were extracted, including study design, definition of VAP, probiotics intervention, category of included patients, incidence of VAP, mortality, duration of mechanical ventilation (MV) and ICU stay. Heterogeneity was evaluated by Chi-squared and I tests. 15 studies involving 2039 patients were identified for analysis. The pooled analysis suggests significant reduction on VAP (risk ratio, 0.68; 95% Cl, 0.60 to 0.77; p<0.00001) in a fixed-effects model. Subgroup analyses performed on the category of clinical and microbiological criteria both support the above conclusion; however, there were no significant differences in duration of MV or length of ICU stay in a random-effects model. Also, no significant differences in total mortality, overall mortality, 28-day mortality or 90-day mortality were found in the fixed-effects model. The probiotics helped to prevent VAP without impacting the duration of MV, length of ICU stay or mortality. The probiotics helped to prevent VAP without impacting the duration of MV, length of ICU stay or mortality.This document constitutes a summary of the clinical practice guidelines (CPGs) prepared at the initiative of the Latin American Thoracic Society (ALAT). Due to new evidence in the treatment of severe asthma, it was agreed to select six clinical questions, and the corresponding recommendations are provided herein. After considering the quality of the evidence, the balance between desirable and undesirable impacts and the feasibility and acceptance of procedures, the following recommendations were established. 1) We do not recommend the use of an inhaled corticosteroid (ICS) plus formoterol as rescue medication in the treatment of severe asthma. 2) We suggest performing many more high-quality randomised studies to evaluate the efficacy and safety of tiotropium in patients with severe asthma. 3) Omalizumab is recommended in patients with severe uncontrolled allergic asthma with serum IgE levels above 30 IU. 4) Anti-interleukin (IL)-5 drugs are recommended in patients with severe uncontrolled eosinophilic asthma (cut-off values above 150 cells·µL-1 for mepolizumab and above 400 cells·µL-1 for reslizumab).
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