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Sputum eosinophil

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https://www.readbyqxmd.com/read/28916185/alveolar-eosinophilia-in-current-smokers-with-chronic-obstructive-pulmonary-disease-in-the-spiromics-cohort
#1
Carlos H Martinez, Sara X Li, Andrew J Hirzel, Valerie R Stolberg, Neil E Alexis, R Graham Barr, Eugene R Bleecker, Elizabeth E Carretta, Stephanie A Christenson, Christopher B Cooper, David J Couper, Claire M Doerschuk, MeiLan K Han, Nadia N Hansel, Annette T Hastie, Eric A Hoffman, Robert J Kaner, Fernando J Martinez, Deborah A Meyers, Wanda K O'Neal, Robert Paine, Nirupama Putcha, Stephen I Rennard, Prescott G Woodruff, Michelle Zeidler, Jeffrey L Curtis, Christine M Freeman
Active smoking in stable COPD subjects significantly increased eosinophil accumulation in the distal airspaces, but not in sputum or peripheral blood. Our findings support the need to investigate this cell-type as a potential driver of COPD symptomatology and progression.
September 12, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28915080/weight-adjusted-intravenous-reslizumab-in-severe-asthma-with-inadequate-response-to-fixed-dose-subcutaneous-mepolizumab
#2
Manali Mukherjee, Fernando Aleman Paramo, Melanie Kjarsgaard, Brittany Salter, Gayatri Nair, Nicola LaVigne, Katherine Radford, Roma Sehmi, Parameswaran Nair
BACKGROUND: Clinical benefits of fixed-dose 100 mg subcutaneous (SC) mepolizumab in prednisone-dependent patients are modest when sputum eosinophilia is not adequately controlled. This study compared treatment response of weight-adjusted intravenous (IV) Reslizumab in patients previously treated with 100 mg SC Mepolizumab. METHOD: 10 prednisone-dependent asthmatics (sputum eosinophils >3% and blood eosinophils > 300cells/μL), who had previously received Mepolizumab (100 mg SC Q4W) for at least 1 year, received two infusions of placebo (Q4W) followed by 4 infusions of 3...
September 15, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28910142/distinct-phenotypes-of-smokers-with-fixed-airflow-limitation-identi%C3%AF-ed-by-cluster-analysis-of-severe-asthma
#3
Satoshi Konno, Natsuko Taniguchi, Hironi Makita, Yuji Nakamaru, Kaoruko Shimizu, Noriharu Shijubo, Satoshi Fuke, Kimihiro Takeyabu, Mitsuru Oguri, Hirokazu Kimura, Yukiko Maeda, Masaru Suzuki, Katsura Nagai, Yoichi M Ito, Sally E Wenzel, Masaharu Nishimura
RATIONALE: Smoking may have multifactorial effects on asthma phenotypes, particularly in severe asthma. Cluster analysis has been applied to explore novel phenotypes, which are not based on any priori hypotheses. OBJECTIVE: To explore novel severe asthma phenotypes by cluster analysis when including smoking asthmatics. METHODS: We recruited a total of 127 subjects with severe asthma, including 59 current or ex-smokers, from our university hospital and its 29 affiliated hospitals/pulmonary clinics...
September 14, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28910134/eosinophilic-and-non-eosinophilic-asthma
#4
Tara F Carr, Amir A Zeki, Monica Kraft
Asthma can be subdivided into eosinophilic or non-eosinophilic phenotypes based on the inflammatory cellular patterns seen in sputum, blood, and airway tissue compartments. However, this level of stratification does not always produce robust clinical phenotypes as there is considerable overlap across these phenotypes when viewed from the perspective of "eosinophilia". Multiple proposed subphenotypes of asthma have instead been described within both the eosinophilic and non-eosinophilic groups. An endotype is the mechanism driving a subphenotype including those associated with eosinophilia such as early-onset allergic asthma, with and without obesity, aspirin sensitive asthma and late-onset eosinophilic asthma, allergic bronchopulmonary mycosis, and exercise-induced asthma...
September 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28905537/the-relationship-between-airway-inflammation-and-exacerbation-in-chronic-obstructive-pulmonary-disease
#5
REVIEW
Diahn Warng Perng, Pei Ku Chen
Chronic obstructive pulmonary disease (COPD) is associated with abnormal inflammatory response and airflow limitation. Acute exacerbation involves increased inflammatory burden leading to worsening respiratory symptoms, including dyspnea and sputum production. Some COPD patients have frequent exacerbations (two or more exacerbations per year). A substantial proportion of COPD patients may remain stable without exacerbation. Bacterial and viral infections are the most common causative factors that breach airway stability and lead to exacerbation...
September 4, 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28863927/the-role-of-non-invasive-modalities-for-assessing-inflammation-in-patients-with-non-cystic-fibrosis-bronchiectasis
#6
Stamatoula Tsikrika, Katerina Dimakou, Andriana I Papaioannou, Georgios Hillas, Loukas Thanos, Kostantinos Kostikas, Stelios Loukides, Spyros Papiris, Nickolaos Koulouris, Petros Bakakos
INTRODUCTION: Bronchiectasis is a heterogeneous entity, taking into account clinical characteristics, inflammatory response, effectiveness of treatment and frequency of exacerbations. In stable state non-cystic fibrosis (non-CF) bronchiectasis, little is known about non-invasive techniques used for evaluating airway inflammation in obstructive airway diseases. OBJECTIVES: We sought to evaluate the associations between induced sputum and clinical/radiologic characteristics, and the differences between biomarkers expressing Th1 and Th2 response in patients with non-CF bronchiectasis and to compare our findings with a previously studied population of patients with asthma and COPD...
August 29, 2017: Cytokine
https://www.readbyqxmd.com/read/28846444/validity-of-fractional-exhaled-nitric-oxide-and-small-airway-function-indices-in-diagnosis-of-cough-variant-asthma
#7
Chen Feng-Jia, Huang Xin-Yan, Lin Geng-Peng, Liu Yang-Li, Xie Can-Mao
BACKGROUND: Fractional exhaled nitric oxide (FeNO) is a non-invasive method used to reveal the eosinophilic inflammation of airway and to diagnose and manage asthma. The diagnostic value of FeNO in patients with cough variant asthma (CVA) is poorly understood. Small airways remain an important aspect of CVA. The use of FeNO measurement or its combination with the small airway function in differentiating CVA patients from chronic cough patients is unexplored. METHODS: From December 2012 to June 2016, patients with chronic nonproductive cough for more than 8 weeks without any wheezing or dyspnea, fever or blood-stained sputum, and abnormalities on X-ray or larger airways function based on physician's opinion were subjected to FeNO, pulmonary function, and bronchial hyperresponsiveness (BHR) tests...
August 28, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28837221/tailored-interventions-based-on-sputum-eosinophils-versus-clinical-symptoms-for-asthma-in-children-and-adults
#8
REVIEW
Helen L Petsky, Albert Li, Anne B Chang
BACKGROUND: Asthma severity and control can be measured both subjectively and objectively. Sputum analysis for evaluation of percentage of sputum eosinophilia directly measures airway inflammation, and is one method of objectively monitoring asthma. Using sputum analysis to adjust or tailor asthma medications is potentially superior to traditional methods based on symptoms and spirometry. OBJECTIVES: To evaluate the efficacy of tailoring asthma interventions based on sputum analysis in comparison to traditional methods (usually symptom-based with or without spirometry/peak flow) for asthma-related outcomes in children and adults...
August 24, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28810625/inhaled-corticosteroids-improve-lung-function-airway-hyper-responsiveness-and-airway-inflammation-but-not-symptom-control-in-patients-with-mild-intermittent-asthma-a-meta-analysis
#9
Wei Du, Ling Zhou, Yingmeng Ni, Yuanyuan Yu, Fang Wu, Guochao Shi
It remains controversial whether inhaled corticosteroid (ICS) should be used in patients with intermittent asthma. The present study aimed to assess the effect of ICS compared with placebo or other therapies in patients with intermittent asthma. Medline, Embase and CNKI databases were searched up to June 2016 and a meta-analysis was conducted. The findings demonstrated that in adult patients, when compared with placebo, ICS increased forced expiratory volume in 1 sec FEV1 [standardized mean difference (SMD), 0...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28781336/serum-eosinophil-cationic-protein-is-a-useful-marker-for-assessing-the-efficacy-of-inhaled-corticosteroid-therapy-in-children-with-bronchial-asthma
#10
Cai-Li Guo, Xiao-Min Sun, Xiao-Wen Wang, Qing Guo
Bronchial asthma (BA) is a chronic inflammatory disorder of airways for which the effective therapies include inhaled corticosteroids (ICS) and short-acting β2-adrenoreceptor agonist (SABA). Serum eosinophil cationic protein (ECP) has been reported to reflect the degree of airway inflammation. We, therefore, explored the implication of serum ECP in assessing the efficacy of ICS therapy in BA children. Our prospective randomized control study enrolled 126 BA children and 78 healthy children (the control group)...
August 2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28771844/assessment-of-eosinophilic-airway-inflammation-as-a-contribution-to-the-diagnosis-of-occupational-asthma
#11
Carolina Beretta, Catherine Rifflart, Geneviève Evrard, Jacques Jamart, Joël Thimpont, Olivier Vandenplas
BACKGROUND: Ascertaining the presence of asthma through the assessment of nonspecific bronchial hyperresponsiveness (NSBH) is a key step in the diagnosis of occupational asthma (OA). We aimed at investigating whether indices of airway inflammation including fractional exhaled nitric oxide (FeNO) and sputum eosinophils would be useful adjuncts to the measurement of NSBH in diagnosing OA defined as a positive specific inhalation challenge (SIC). METHODS: The study included 240 consecutive subjects with a suspicion of OA who completed a SIC, of whom 133 showed a positive response...
August 3, 2017: Allergy
https://www.readbyqxmd.com/read/28756296/pathway-discovery-using-transcriptomic-profiles-in-adult-onset-severe-asthma
#12
Pieter-Paul Hekking, Matt J Loza, Stelios Pavlidis, Bertrand de Meulder, Diane Lefaudeux, Fred Baribaud, Charles Auffray, Ariane H Wagener, Paul Brinkman, Rene Lutter, Aruna T Bansal, Ana R Sousa, Steve A Bates, Yannis Pandis, Louise J Fleming, Dominique E Shaw, Stephen J Fowler, Y Guo, Andrea Meiser, Kai Sun, Julie Corfield, Peter H Howarth, Elisabeth H Bel, Ian M Adcock, Kian Fan Chung, Ratko Djukanovic, Peter J Sterk
BACKGROUND: Adult-onset severe asthma is characterized by highly symptomatic disease despite high-intensity asthma treatments. Understanding of the underlying pathways of this heterogeneous disease is needed for the development of targeted treatments. Gene set variation analysis is a statistical technique used to identify gene profiles in heterogeneous samples. OBJECTIVE: We sought to identify gene profiles associated with adult-onset severe asthma. METHODS: This was a cross-sectional, observational study in which adult patients with adult-onset of asthma (defined as starting at age ≥18 years) as compared with childhood-onset severe asthma (<18 years) were selected from the U-BIOPRED cohort...
July 26, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28751233/sputum-autoantibodies-in-severe-eosinophilic-asthma
#13
Manali Mukherjee, David C Bulir, Katherine Radford, Melanie Kjarsgaard, Chynna Margaret Huang, Elizabeth A Jacobsen, Sergei I Ochkur, Ana Catuneanu, Hanah Lamothe-Kipnes, James Mahony, James J Lee, Paige Lacy, Parameswaran K Nair
BACKGROUND: The persistence of eosinophils in sputum despite high doses of corticosteroids indicates disease severity in asthma. Chronic inflamed airways over time may lose tolerance to immunogenic entities released upon frequent eosinophil degranulation, which further contributes to disease severity and necessitates increase in maintenance corticosteroids. OBJECTIVES: To investigate the possibility of a polyclonal autoimmune event in asthmatic airways, and identify associated clinical and molecular characteristics...
July 24, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28736267/gamma-tocopherol-enriched-supplement-reduces-sputum-eosinophilia-and-endotoxin-induced-sputum-neutrophilia-in-volunteers-with-asthma
#14
Allison J Burbank, Charity G Duran, Yinghao Pan, Patricia Burns, Susan Jones, Qing Jiang, Chao Yang, Sha'Leema Jenkins, Heather Wells, Neil Alexis, Mehmet Kesimer, William D Bennett, Haibo Zhou, David B Peden, Michelle L Hernandez
BACKGROUND: We and others have shown that the gamma tocopherol (γT) isoform of vitamin E has multiple anti-inflammatory and antioxidant actions and that γT supplementation reduces eosinophilic and endotoxin (LPS)-induced neutrophilic airway inflammation in animal models and healthy human volunteers. OBJECTIVE: We sought to determine whether γT supplementation reduces eosinophilic airway inflammation and acute neutrophilic response to inhaled LPS challenge in volunteers with asthma...
July 20, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28733314/effects-of-an-airway-clearance-device-on-inflammation-bacteriology-and-mucus-transport-in-bronchiectasis
#15
Joana Tambascio, Hugo Celso Dutra de Souza, Roberto Martinez, José Antônio Baddini-Martinez, Peter John Barnes, Ada Clarice Gastaldi
BACKGROUND: Bronchiectasis is characterized by abnormal and permanent dilation of the bronchi, caused by the perpetuation of inflammation and impairment of mucociliary clearance. Physiotherapy techniques can help to decrease the retention of respiratory secretions. The flutter valve combines high-frequency oscillation and positive expiratory pressure to facilitate the removal of secretions. We evaluated the effects of the flutter valve on sputum inflammation, microbiology, and transport of respiratory secretions in patients with bronchiectasis...
August 2017: Respiratory Care
https://www.readbyqxmd.com/read/28731412/lung-sound-analysis-is-useful-for-monitoring-therapy-in-patients-with-bronchial-asthma
#16
T Shimoda, Y Obase, Y Nagasaka, H Nakano, R Kishikawa, T Iwanaga
BACKGROUND AND OBJECTIVE: Lung sound analysis (LSA) has been reported to be useful for predicting airway obstruction and inflammation in patients with bronchial asthma. Objectives: We examined whether the exhalation-to-inhalation sound pressure ratio in the middle frequency range (200-400 Hz) (E/I MF) is useful for monitoring therapy in patients with asthma. METHODS: The study population comprised 84 patients with mild to moderate asthma whose LSA data were available before and after 1 year of daily treatment with (budesonide 800 μg)...
2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28709489/the-success-and-safety-profile-of-sputum-induction-in-patients-with-chronic-obstructive-pulmonary-disease-an-indian-experience
#17
Lalita Fernandes, Anthony Menezes Mesquita
BACKGROUND: Neutrophilic inflammation is common in chronic obstructive pulmonary disease while Asthma COPD overlap syndrome has eosinophilic predominance. Identifying the type of inflammation will aid in better management of COPD, but published studies show that induced sputum examination is more frequently used in asthma than COPD, with safety being the limiting factor. We aimed to determine the success and safety of sputum induction (SI) in COPD patients. METHODS: 116 stable COPD patients underwent SI...
July 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28696802/correlation-of-induced-sputum-eosinophil-levels-with-clinical-parameters-in-mild-and-moderate-persistent-asthma-in-children-aged-7-18%C3%A2-years
#18
Prachi Kansal, Devki Nandan, Sheetal Agarwal, Neha Patharia, Narendra Arya
BACKGROUND: Treatment decisions in asthma are currently based on clinical assessment and spirometry. Sputum eosinophil, being a marker of airway inflammation, can serve as a tool for assessing severity and response to treatment in asthma patients. OBJECTIVES: To measure eosinophil percentage in induced sputum in children with asthma and correlate it with clinical asthma parameters. METHODS: A prospective observational study was performed at tertiary care hospital on 91 children aged 7-18 years with newly diagnosed mild or moderate persistent asthma...
July 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28695805/clinical-analysis-of-77-patients-with-allergic-bronchopulmonary-aspergillosis-in-peking-union-medical-college-hospital
#19
Mingqiang Zhang, Jinming Gao
Objective To summarize the clinical features of allergic bronchopulmonary aspergillosis(ABPA)to facilitate its early diagnosis and treatment. Methods We retrospectively analyzed the clinical data of 77 patients who had been admitted to Peking Union Medical College Hospital from January 1996 to July 2015 with ABPA. Results The average age of these 77 patients(38 men and 39 women)was(41.8±18.3)years. The co-morbidities included bronchial asthma(n=74,96%)and pulmonary cystic fibrosis(n=3,4%). The main symptoms and signs of ABPA were chronic cough(100%),sputum production(97%),wheeze(86%),sputum plugs(25%),blood-stained sputum(18%),hemoptysis(9%),chest pain(9%),fever(47%),weight loss(30%),and night sweat(12%)...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28694695/relationship-between-blood-eosinophils-clinical-characteristics-and-mortality-in-patients-with-copd
#20
Maeva Zysman, Gaëtan Deslee, Denis Caillaud, Pascal Chanez, Roger Escamilla, Isabelle Court-Fortune, Pascale Nesme-Meyer, Thierry Perez, Jean-Louis Paillasseur, Christophe Pinet, Gilles Jebrak, Nicolas Roche, Pierre-Régis Burgel
In patients with COPD, there is controversy regarding the association of blood eosinophil (Eos) levels with 1) exacerbation frequency and 2) the effect of inhaled corticosteroids for prevention of exacerbations. To determine whether Eos define subgroups of patients exhibiting attributes of COPD clinical phenotypes, we compared clinical features and mortality rates in COPD patients from the Initiatives BPCO French cohort categorized using different thresholds of blood Eos levels. The following data were collected at inclusion: medical and smoking history, occupational exposures, dyspnea, cough and sputum production, exacerbations in the previous year, history of allergy and asthma, nasal symptoms, body mass index, St George Respiratory Questionnaire (SGRQ) total score, post-bronchodilator spirometry, comorbidities, and medications...
2017: International Journal of Chronic Obstructive Pulmonary Disease
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