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Scotney E, Fleming L, Saglani S, Sonnappa S, Bush A. Advances in the pathogenesis and personalised treatment of paediatric asthma. BMJ MEDICINE 2023; 2:e000367. [PMID: 37841968 PMCID: PMC10568124 DOI: 10.1136/bmjmed-2022-000367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 05/05/2023] [Indexed: 10/17/2023]
Abstract
The diversity of pathology of severe paediatric asthma demonstrates that the one-size-fits-all approach characterising many guidelines is inappropriate. The term "asthma" is best used to describe a clinical syndrome of wheeze, chest tightness, breathlessness, and sometimes cough, making no assumptions about underlying pathology. Before personalising treatment, it is essential to make the diagnosis correctly and optimise basic management. Clinicians must determine exactly what type of asthma each child has. We are moving from describing symptom patterns in preschool wheeze to describing multiple underlying phenotypes with implications for targeting treatment. Many new treatment options are available for school age asthma, including biological medicines targeting type 2 inflammation, but a paucity of options are available for non-type 2 disease. The traditional reliever treatment, shortacting β2 agonists, is being replaced by combination inhalers containing inhaled corticosteroids and fast, longacting β2 agonists to treat the underlying inflammation in even mild asthma and reduce the risk of asthma attacks. However, much decision making is still based on adult data extrapolated to children. Better inclusion of children in future research studies is essential, if children are to benefit from these new advances in asthma treatment.
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Affiliation(s)
- Elizabeth Scotney
- National Heart and Lung Institute, Imperial College London, London, UK
- Royal Brompton Hospital, London, UK
| | - Louise Fleming
- National Heart and Lung Institute, Imperial College London, London, UK
- Royal Brompton Hospital, London, UK
- Centre for Paediatrics and Child Health, Imperial College London, London, UK
| | - Sejal Saglani
- National Heart and Lung Institute, Imperial College London, London, UK
- Royal Brompton Hospital, London, UK
- Centre for Paediatrics and Child Health, Imperial College London, London, UK
| | - Samatha Sonnappa
- National Heart and Lung Institute, Imperial College London, London, UK
- Royal Brompton Hospital, London, UK
- Centre for Paediatrics and Child Health, Imperial College London, London, UK
| | - Andrew Bush
- National Heart and Lung Institute, Imperial College London, London, UK
- Royal Brompton Hospital, London, UK
- Centre for Paediatrics and Child Health, Imperial College London, London, UK
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Campisi R, Nolasco S, Pelaia C, Impellizzeri P, D'Amato M, Portacci A, Ricciardi L, Scioscia G, Crimi N, Scichilone N, Foschino Barbaro MP, Pelaia G, Carpagnano GE, Vatrella A, Crimi C. Benralizumab Effectiveness in Severe Eosinophilic Asthma with Co-Presence of Bronchiectasis: A Real-World Multicentre Observational Study. J Clin Med 2023; 12:3953. [PMID: 37373648 DOI: 10.3390/jcm12123953] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Introduction: The co-presence of bronchiectasis (BE) in severe eosinophilic asthma (SEA) is common. Data about the effectiveness of benralizumab in patients with SEA and BE (SEA + BE) are lacking. Aim: The aim of this study was to evaluate the effectiveness of benralizumab and remission rates in patients with SEA compared to SEA + BE, also according to BE severity. Methods: We conducted a multicentre observational study, including patients with SEA who underwent chest high-resolution computed tomography at baseline. The Bronchiectasis Severity Index (BSI) was used to assess BE severity. Clinical and functional characteristics were collected at baseline and after 6 and 12 months of treatment. Results: We included 74 patients with SEA treated with benralizumab, of which 35 (47.2%) showed the co-presence of bronchiectasis (SEA + BE) with a median BSI of 9 (7-11). Overall, benralizumab significantly improved the annual exacerbation rate (p < 0.0001), oral corticosteroids (OCS) consumption (p < 0.0001) and lung function (p < 0.01). After 12 months, significant differences were found between SEA and SEA + BE cohorts in the number of exacerbation-free patients [64.1% vs. 20%, OR 0.14 (95% CI 0.05-0.40), p < 0.0001], the proportion of OCS withdrawal [-92.6% vs. -48.6, p = 0.0003], and the daily dose of OCS [-5 mg (0 to -12.5) vs. -12.5 mg (-7.5 to -20), p = 0.0112]. Remission (zero exacerbations + zero OCS) was achieved more frequently in the SEA cohort [66.7% vs. 14.3%, OR 0.08 (95% CI 0.03-0.27), p < 0.0001]. Changes in FEV1% and FEF25-75% were inversely correlated with BSI (r = -0.36, p = 0.0448 and r = -0.41, p = 0.0191, respectively). Conclusions: These data suggest that benralizumab exerts beneficial effects in SEA with or without BE, although the former achieved less OCS sparing and fewer respiratory-function improvements.
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Affiliation(s)
- Raffaele Campisi
- Respiratory Medicine Unit, Policlinico "G. Rodolico-San Marco" University Hospital, 95123 Catania, Italy
| | - Santi Nolasco
- Respiratory Medicine Unit, Policlinico "G. Rodolico-San Marco" University Hospital, 95123 Catania, Italy
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Corrado Pelaia
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Pietro Impellizzeri
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Maria D'Amato
- Department of Respiratory Medicine, University "Federico II" of Naples, 80138 Naples, Italy
| | - Andrea Portacci
- Department of Translational Biomedicine and Neuroscience, Institute of Respiratory Disease, University "Aldo Moro", 70121 Bari, Italy
| | - Luisa Ricciardi
- Department of Clinical and Experimental Medicine, University of Messina, 98166 Messina, Italy
| | - Giulia Scioscia
- Department of Medical and Surgical Sciences, University of Foggia, 71100 Foggia, Italy
| | - Nunzio Crimi
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Nicola Scichilone
- Division of Respiratory Diseases, Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, 90128 Palermo, Italy
| | | | - Girolamo Pelaia
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Giovanna Elisiana Carpagnano
- Department of Translational Biomedicine and Neuroscience, Institute of Respiratory Disease, University "Aldo Moro", 70121 Bari, Italy
| | - Alessandro Vatrella
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Salerno, Italy
| | - Claudia Crimi
- Respiratory Medicine Unit, Policlinico "G. Rodolico-San Marco" University Hospital, 95123 Catania, Italy
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
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Gomes M, Mendes A, Ferreira F, Branco J, Tonin FS, Pedro ME. The Role of Benralizumab in Eosinophilic Immune Dysfunctions: A Case Report-Based Literature Review. Case Rep Med 2023; 2023:8832242. [PMID: 37138643 PMCID: PMC10151146 DOI: 10.1155/2023/8832242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/24/2023] [Accepted: 04/05/2023] [Indexed: 05/05/2023] Open
Abstract
In the past years, the knowledge of eosinophils playing a primary pathophysiologic role in several associated conditions has led to the development of biologics targeting therapies aiming at normalizing the immune response, reducing chronic inflammation, and preventing tissue damage. To better illustrate the potential relationship between different eosinophilic immune dysfunctions and the effects of biological therapies in this scenario, here, we present a case of a 63-year-old male first referred to our department in 2018 with a diagnosis of asthma, polyposis, and rhinosinusitis and presenting a suspicion of nonsteroidal anti-inflammatory drugs' allergy. He also had a past medical history of eosinophilic gastroenteritis/duodenitis (eosinophilia counts >50 cells/high-power field HPF). The use of multiple courses of corticosteroid therapy failed to completely control these conditions. In October 2019, after starting benralizumab (an antibody directed against the alpha chain of the IL-5 cytokine receptor) as add-on treatment for severe eosinophilic asthma, important clinical improvements were reported both on the respiratory (no asthma exacerbations) and gastrointestinal systems (eosinophilia count 0 cells/HPF). Patients' quality of life also increased. Since June 2020, systemic corticosteroid therapy was reduced without worsening of gastrointestinal symptoms or eosinophilic inflammation. This case warns of the importance of early recognition and appropriate individualized treatment of eosinophilic immune dysfunctions and suggests the conduction of further larger studies on the use of benralizumab in gastrointestinal syndromes aiming at better understanding its relying mechanisms of action in the intestinal mucosa.
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Affiliation(s)
- Margarida Gomes
- Serviço de Imunoalergologia, Hospital de Santa Maria, Centro Hospitalar e Universitário Lisboa Norte, Lisbon, Portugal
| | - Ana Mendes
- Serviço de Imunoalergologia, Hospital de Santa Maria, Centro Hospitalar e Universitário Lisboa Norte, Lisbon, Portugal
| | - Filipa Ferreira
- Serviço de Gastroenterologia, Hospital Professor Doutor Fernando Fonseca, EPE, Amadora, Portugal
| | - Joana Branco
- Serviço de Gastroenterologia, Hospital Professor Doutor Fernando Fonseca, EPE, Amadora, Portugal
| | - Fernanda S. Tonin
- H & TRC-Health & Technology Research Center, ESTeSL-Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - M. Elisa Pedro
- Serviço de Imunoalergologia, Hospital de Santa Maria, Centro Hospitalar e Universitário Lisboa Norte, Lisbon, Portugal
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Crespo-Lessmann A, Curto E, Mateus Medina EF, Palones E, Belda Soler A, Sánchez Maza S, Soto-Retes L, Plaza V. Characteristics of Induced-Sputum Inflammatory Phenotypes in Adults with Asthma: Predictors of Bronchial Eosinophilia. J Asthma Allergy 2023; 16:95-103. [PMID: 36699564 PMCID: PMC9869783 DOI: 10.2147/jaa.s389402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 12/19/2022] [Indexed: 01/19/2023] Open
Abstract
Purpose The objectives of this study were, for patients attending a specialist asthma clinic at a tertiary care hospital, to determine, from sputum induction (SI), proportions of bronchial inflammatory phenotypes, demographic, clinical and functional characteristics of each phenotype, and the most accessible non-invasive inflammatory marker that best discriminates between phenotypes. Patients and Methods Included were 96 patients with asthma, attending a specialist asthma clinic at a tertiary care hospital, who underwent testing as follows: SI, spirometry, fractional exhaled nitric oxide (FeNO), blood eosinophilia, total immunoglobulin E (IgE), and a skin prick test. Results SI phenotypes were 46.9% eosinophilic, 33.3% paucigranulocytic, 15.6% neutrophilic, and 4.2% mixed. No significantly different clinical or functional characteristics were observed between the phenotypes. A positive correlation was observed between SI eosinophilia and both emergency visits in the last 12 months (p = 0.041; r = 0.214) and FeNO values (p = 0.000; r = 0.368). Blood eosinophilia correlated with SI eosinophilia (p = 0.001; r = 0.362) and was the best predictor of bronchial eosinophilia, followed by FeNO, and total blood IgE (area under the receiver operating characteristic curve (AUC-ROC) 72%, 65%, and 53%, respectively), although precision was only fair. Conclusion In consultations for severe asthma, the most frequent phenotype was eosinophilic. Peripheral blood eosinophilia is a reliable marker for discriminating between different bronchial inflammatory phenotypes, is useful in enabling doctors to select a suitable biologic treatment and so prevent asthma exacerbation, and is a better predictor of bronchial eosinophilia than FeNO and IgE values.
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Affiliation(s)
- Astrid Crespo-Lessmann
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Elena Curto
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Eder Freddy Mateus Medina
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Esther Palones
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Alicia Belda Soler
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Soraya Sánchez Maza
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Lorena Soto-Retes
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Vicente Plaza
- Servicio de Neumología y Alergia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Institut d’Investigació Biomédica Sant Pau, Barcelona, Spain
- Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
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Guidance for Administering Biologics for Severe Asthma and Allergic Conditions. Can Respir J 2022; 2022:9355606. [PMID: 36124286 PMCID: PMC9482537 DOI: 10.1155/2022/9355606] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 07/19/2022] [Indexed: 11/24/2022] Open
Abstract
Asthma is a common respiratory disorder in Canada for which biologics may be prescribed for poorly controlled illness. Treatment with biologics, however, is sometimes inappropriately discontinued due to misconceptions regarding their potential immunologic effects, and concerns surrounding their continued use in severe asthma during the COVID-19 pandemic continue to propagate. Biologics can still be administered in a majority of health and treatment conditions. With regard to cardiac-related issues such as hypertension or cardiovascular disease (CVD), there is no solid evidence that suggests biologics should be withheld, as the benefits of treatment outweigh the risks. Asthmatic patients on biologic treatment should also continue treatment if they have, or are currently being treated for, a respiratory infection, including COVID-19. Evidence also indicates the importance of maintaining asthma control to reduce the risk of severe COVID-19 infection. Biologic treatment can be administered in severe asthmatic patients with bronchiectasis, though further evidence is needed to better understand the benefits. Biologic treatment should be continued postsurgery to reduce postoperative respiratory complications, as well as throughout the course of pregnancy. Regarding concerns over vaccine administration, nearly all vaccines can be given without interruption of biologic treatment in patients with severe asthma or allergic conditions. Appropriate screening for respiratory illnesses, such as COVID-19, continues to be warranted in clinical practices to reduce the risk of transmission. As recommendations from public health and regulatory agencies have been lacking, this guidance document addresses the administration of biologics in different health circumstances and respiratory illness screening during the COVID-19 pandemic.
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Severe asthma treatment patterns: A multicenter observational study in the Gulf region. World Allergy Organ J 2022; 15:100647. [PMID: 35663273 PMCID: PMC9127696 DOI: 10.1016/j.waojou.2022.100647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 02/15/2022] [Accepted: 03/23/2022] [Indexed: 11/21/2022] Open
Abstract
Background Methods Results Conclusions
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Aljazeeri J, Sakkat A, Makhdami N, Almusally R, Morfaw F, McIvor A. Blood Eosinophils and Pulmonary Rehabilitation in COPD. Can Respir J 2021; 2021:7449527. [PMID: 34777651 PMCID: PMC8589509 DOI: 10.1155/2021/7449527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/24/2021] [Indexed: 11/18/2022] Open
Abstract
Background Blood eosinophils predict the response to therapy, risk of exacerbation, and readmission in COPD. This study investigates whether blood eosinophils predict pulmonary rehabilitation (PR) outcomes in COPD. Methods We categorized patients into eosinophilic (blood eosinophils ≥300 cells/ml) or noneosinophilic (<300 cells/ml). In a retrospective design, we compared changes within and between the two groups on BODE index, 6-minute walk test (6MWT), FEV1, and mMRC dyspnea scale. Results Of 206 patients enrolled, 176 were included for analysis; 90 were eosinophilic. BODE index improved in both groups: (MD -1.25; 95% CI (-0.45, -4.25), P ≤ 0.001) in the eosinophilic and (MD -1.33; 95% CI (-1.72, -0.94), P ≤ 0.001) in the noneosinophilic, but a higher BODE index remained in the eosinophilic (4.98); adjusted mean change (β): 0.7 (95% CI (0.15, 1.26), P=0.01). 6MWT improved by 29.3 m in the eosinophilic (95% CI (14.2, 44.4), P ≤ 0.001) vs. 115.1 m in the noneosinophilic (95% CI (-30.4, 260.6), P=0.12). FEV1 did not change in the eosinophilic (MD -0.6; 95% CI (-2.64, 1.48), P=0.58), but improved by 2.5% in the noneosinophilic (MD 2.5; 95% CI (0.77, 4.17), P=0.005). There were no significant between-group differences in 6MWT and FEV1; adjusted mean changes (β) were -9.69 m (95% CI (-39.51, 20.14), P=0.52) and -2.31% (95% CI (-5.69, 1.08), P=0.18), respectively. There were no significant within- or between-group changes in the mMRC scale. Conclusion Although PR improves the BODE index in both eosinophilic and noneosinophilic COPD, a higher eosinophil count (≥300 cells/ml) is associated with a higher (worse) BODE index. Blood eosinophils may predict PR outcomes.
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Affiliation(s)
- Jafar Aljazeeri
- University of Pittsburgh Medical Center, Pennsylvania, USA
- Drexel University College of Medicine, Pennsylvania, USA
| | - Abdullah Sakkat
- McMaster University, Department of Medicine, Division of Respirology, Hamilton, Canada
| | - Nima Makhdami
- Firestone Institute for Respiratory Health, St Joseph Healthcare, Hamilton, Canada
| | | | - Frederick Morfaw
- McMaster Univerisity, Department of Health Research Methods, Evidence and Impact, Hamilton, Canada
| | - Andrew McIvor
- McMaster University, Department of Medicine, Division of Respirology, Hamilton, Canada
- Firestone Institute for Respiratory Health, St Joseph Healthcare, Hamilton, Canada
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Di Bona D, Crimi C, D'Uggento AM, Benfante A, Caiaffa MF, Calabrese C, Campisi R, Carpagnano GE, Ciotta D, D'Amato M, Pelaia C, Pelaia G, Pellegrino S, Scichilone N, Scioscia G, Ribecco N, Spadaro G, Valenti G, Vatrella A, Crimi N, Macchia L. Effectiveness of benralizumab in severe eosinophilic asthma: Distinct sub-phenotypes of response identified by cluster analysis. Clin Exp Allergy 2021; 52:312-323. [PMID: 34608696 PMCID: PMC9293293 DOI: 10.1111/cea.14026] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/31/2021] [Accepted: 09/29/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Benralizumab is effective in severe eosinophilic asthma (SEA), but suboptimal responses are observed in some patients. Although several factors have been associated with benralizumab response, no cluster analysis has yet been undertaken to identify different responsiveness sub-phenotypes. OBJECTIVE To identify SEA sub-phenotypes with differential responsiveness to benralizumab. METHODS One hundred and five patients diagnosed with SEA who had completed 6 months of benralizumab treatment were included in a hierarchical cluster analysis based on a set of clinical variables that can be easily collected in routine practice (age, age at disease onset, disease length, allergen sensitization status, blood eosinophil count, IgE levels, FEV1 % predicted, nasal polyposis, bronchiectasis). RESULTS Four clusters were identified: Clusters 2 and 3 included patients with high levels of both IgE and eosinophils (type-2 biomarkers high), whereas Clusters 1 and 4 included patients with only one type-2 biomarker at a high level: IgE in Cluster 1 and eosinophils in Cluster 4. Clusters 2 and 3 (both type-2 biomarkers high) showed the highest response rate to benralizumab in terms of elimination of exacerbations (79% and 80% respectively) compared to Clusters 1 and 4 (52% and 60% respectively). When super-response (the absence of exacerbation without oral corticosteroid use) was assessed, Cluster 2, including patients with more preserved lung function than the other clusters, but comparable exacerbation rate, oral corticosteroid use and symptom severity, was the most responsive cluster (87.5% of patients). CONCLUSIONS Our cluster analysis identified benralizumab differential response sub-phenotypes in SEA, with the potential of improving disease treatment and precision management.
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Affiliation(s)
- Danilo Di Bona
- Department of Emergency and Organ Transplantation, School and Chair of Allergology and Clinical Immunology, University of Bari - Aldo Moro, Bari, Italy
| | - Claudia Crimi
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | | | - Alida Benfante
- Department of Biomedicine and Internal and Specialistic Medicine, University of Palermo, Palermo, Italy
| | | | - Cecilia Calabrese
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Napoli, Italy
| | - Raffaele Campisi
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Giovanna Elisiana Carpagnano
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, Section of Respiratory Disease, University "Aldo Moro" of Bari, Bari, Italy
| | - Domenico Ciotta
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Maria D'Amato
- Division of Pneumology, "V. Monaldi" University Hospital, Naples, Italy
| | - Corrado Pelaia
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Girolamo Pelaia
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Simona Pellegrino
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Nicola Scichilone
- Department of Biomedicine and Internal and Specialistic Medicine, University of Palermo, Palermo, Italy
| | - Giulia Scioscia
- Department of Medical and Surgical Sciences, Institute of Respiratory Diseases, University of Foggia, Foggia, Italy
| | - Nunziata Ribecco
- Department of Economics and Finance, University of Bari - Aldo Moro, Bari, Italy
| | - Giuseppe Spadaro
- Allergology and Immunology Unit, University "Federico II" of Naples, Naples, Italy
| | - Giuseppe Valenti
- Allergology and Pulmonology Unit, Provincial Outpatient Center of Palermo, Palermo, Italy
| | - Alessandro Vatrella
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Nunzio Crimi
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Luigi Macchia
- Department of Emergency and Organ Transplantation, School and Chair of Allergology and Clinical Immunology, University of Bari - Aldo Moro, Bari, Italy
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9
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Nolasco S, Crimi C, Pelaia C, Benfante A, Caiaffa MF, Calabrese C, Carpagnano GE, Ciotta D, D'Amato M, Macchia L, Pelaia G, Pellegrino S, Scichilone N, Scioscia G, Spadaro G, Campisi R, Valenti G, Vatrella A, Crimi N. Benralizumab Effectiveness in Severe Eosinophilic Asthma with and without Chronic Rhinosinusitis with Nasal Polyps: A Real-World Multicenter Study. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2021; 9:4371-4380.e4. [PMID: 34419679 DOI: 10.1016/j.jaip.2021.08.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/20/2021] [Accepted: 08/02/2021] [Indexed: 01/21/2023]
Abstract
BACKGROUND Chronic rhinosinusitis with nasal polyps (CRSwNP) affects around 60% of patients with severe eosinophilic asthma (SEA). Benralizumab was recently approved for SEA add-on treatment. OBJECTIVE To assess the real-world effectiveness of benralizumab in SEA with or without CRSwNP. METHODS We conducted a multicenter observational study, including patients with SEA treated with benralizumab for 24 weeks in 12 Italian specialized facilities. Asthma exacerbations, Asthma Control Test (ACT), lung function, oral corticosteroid (OCS) dosage, and eosinophil and basophil count in peripheral blood were recorded at baseline and after 4, 12, and 24 weeks. The 22-item Sino-Nasal Outcome Test (SNOT-22) and Lund-Mackay scores were assessed at baseline and after 24 weeks in SEA+CRSwNP. RESULTS A total of 137 patients with late-onset SEA were included; 57.7% (79 of 137) showed the copresence of CRSwNP. Overall, severe asthma exacerbations decreased from 4 (3-6) to 0 (0-2) (P < .0001) after 24 weeks of treatment, and significant improvements were observed as early as 4 weeks in ACT score, OCS dosage, forced expiratory volume in the 1st second (FEV1)%, FEV1 (L), forced vital capacity (FVC)%, FEV1/FVC% (P < .0001), and forced expiratory flow between 25% and 75% of FVC (FEF25-75)% (P = .0022). Eosinophils and basophils in peripheral blood were rapidly depleted. In patients with SEA+CRSwNP, SNOT-22 decreased from 46 (39.5-64.5) to 32 (19-46) (P < .0001). Furthermore, in comparison with SEA, they showed enhanced responses with regard to ACT minimal clinically important difference (P = .0387), FEV1% (P = .017), FEV1 (L) (P = .02), and FEF25-75% (P = .0362). CONCLUSIONS These real-world data suggest that benralizumab can represent a valid add-on therapeutic option for patients with SEA, especially with comorbid CRSwNP.
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Affiliation(s)
- Santi Nolasco
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Claudia Crimi
- Respiratory Medicine Unit, A.O.U. Policlinico "G. Rodolico-San Marco", Catania, Italy.
| | - Corrado Pelaia
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Alida Benfante
- PROMISE Department, University of Palermo, Palermo, Italy
| | | | - Cecilia Calabrese
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giovanna Elisiana Carpagnano
- Respiratory Medicine Section, Department of Basic Medical Science, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Domenico Ciotta
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Maria D'Amato
- Respiratory Department, Division of Respiratory Diseases, "Federico II" University, Naples, Italy
| | - Luigi Macchia
- Department of Emergency and Organ Transplantation, School and Chair of Allergology and Clinical Immunology, University of Bari Aldo Moro, Bari, Italy
| | - Girolamo Pelaia
- Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Simona Pellegrino
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | | | - Giulia Scioscia
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Giuseppe Spadaro
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Raffaele Campisi
- Respiratory Medicine Unit, A.O.U. Policlinico "G. Rodolico-San Marco", Catania, Italy
| | - Giuseppe Valenti
- Allergology and Pulmonology Unit, Provincial Outpatient Center of Palermo, Palermo, Italy
| | - Alessandro Vatrella
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Nunzio Crimi
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy; Respiratory Medicine Unit, A.O.U. Policlinico "G. Rodolico-San Marco", Catania, Italy
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10
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Treatable traits in chronic rhinosinusitis with nasal polyps. Curr Opin Allergy Clin Immunol 2020; 19:373-378. [PMID: 31135395 DOI: 10.1097/aci.0000000000000544] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
PURPOSE OF REVIEW Chronic rhinosinusitis with nasal polyps (CRSwNP) is a complex inflammatory sinonasal disease that deserves a multidisciplinary precision medicine approach. In a precision medicine model, a more pragmatic approach taking in consideration disease features that are potentially treatable should be considered. RECENT FINDINGS Several treatable traits in CRSwNP can be identified: from disease-related ones, to extra-ENT features, to behavioral and environmental factors. This review article summarizes primarily the recent findings of CRSwNP-related treatable traits and how they can be modified by given treatments. SUMMARY The advent of biological agents acting directly to the endotype underlying CRSwNP pushes the scientific community to integrate clinical, surgical and immunological evaluations for each single patient; this naturally leads to the identification of specific treatable traits that can serve as possible outcomes for any single biological.
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11
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Renner A, Romanova J, Ferko B, Schmutz H, Nebolsin V, Müller M, Badorrek P, Marth K, Pohl W. Safety, pharmacokinetics and pharmacodynamics of a novel anti-asthmatic drug, XC8, in healthy probands. Pulm Pharmacol Ther 2019; 59:101852. [PMID: 31597083 DOI: 10.1016/j.pupt.2019.101852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/09/2019] [Accepted: 10/03/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION XC8 (histamine glutarimide) is a novel agent which targets eosinophilic migration and mast cell degranulation and has shown anti-asthmatic effects in animal studies. OBJECTIVE The objective of this placebo-controlled phase 1 study was to assess the safety of oral XC8 and to evaluate its pharmacokinetic and pharmacodynamic properties. METHODS 32 healthy volunteers in three dose-escalation treatment groups (10 mg [n = 8], 50 mg [n = 8] and 200 mg [n = 16]) were randomized in a 3:1 ratio to XC8 or placebo respectively. The subjects received a single dose of the drug at Day 1 and then once-daily for 14 days (Days 8-21). RESULTS No severe adverse events occurred. The number of adverse events was similar in the treatment arms compared to placebo and all subjects completed the study as planned. No clinically significant changes occurred in hematologic and biochemical blood tests in subjects receiving XC8. The pharmacokinetic data showed similar dose and time dependent mean plasma XC8 concentrations after single (Day 1) and multiple (Day 21) dosing. The mean maximum concentrations were 114-1993 ng/mL after single and 115-2089 ng/mL after multiple dosing. The mean times to maximum concentration were 0.68-1.01 and 0.67-0.98 h, respectively. There was no evidence for accumulation of XC8 after multiple dosing. CONCLUSION XC8 was safe and well tolerated. A phase 2 study is being performed to further evaluate the potential role of XC8 in asthma treatment. TRIAL REGISTRATION ClinicalTrials.gov, NCT02882217.
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Affiliation(s)
- Andreas Renner
- Karl Landsteiner Institute for Clinical and Experimental Pneumology, Hietzing Hospital, Vienna, Austria; Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland; Individualized Drug Therapy Research Program, Faculty of Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
| | | | | | | | | | - Meike Müller
- Fraunhofer Institute of Toxicology and Experimental Medicine, Hannover, Germany
| | - Philipp Badorrek
- Fraunhofer Institute of Toxicology and Experimental Medicine, Hannover, Germany
| | - Katharina Marth
- Karl Landsteiner Institute for Clinical and Experimental Pneumology, Hietzing Hospital, Vienna, Austria
| | - Wolfgang Pohl
- Karl Landsteiner Institute for Clinical and Experimental Pneumology, Hietzing Hospital, Vienna, Austria
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12
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Factors affecting the hospitalization of female patients with asthma. JOURNAL OF SURGERY AND MEDICINE 2019. [DOI: 10.28982/josam.616836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Impact of point-of-care testing for white blood cell count on triage of patients with infection in the remote Northern Territory of Australia. Pathology 2019; 51:512-517. [PMID: 31262564 DOI: 10.1016/j.pathol.2019.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 04/02/2019] [Accepted: 04/09/2019] [Indexed: 11/23/2022]
Abstract
In Australia's Northern Territory (NT), acute infections are highly prevalent within Indigenous remote communities and difficulties in diagnosing the aetiology of infection are exacerbated by limited access to diagnostic tests. The objective of this study was to investigate the clinical effectiveness of point-of-care (POC) testing for total and 5-part differential white blood cell (WBC DIFF) counts for the triage of patients with possible acute infection. The HemoCue WBC DIFF POC device was introduced into 13 remote health clinics over a 6 month period. A retrospective clinical audit of patient cases meeting the selection criteria for three acute infections (sepsis, respiratory infection and appendicitis) were examined by four registrars in duplicate; one with POC test results available and the other with POC test results removed to determine if WBC DIFF results changed or assisted in patient triage. The number of changed outcomes provided a preliminary cost-benefit analysis. Sixty (23%) patient cases met the selection criteria for the clinical effectiveness analysis. POC test results changed the triage decision for 24 (41%) patients, of which 20 (34%) led to the prevention of an unnecessary medical retrieval and four (7%) indicated the patient had an acute infection which required a medical retrieval. POC test results assisted decision making for a further 13 (22%) patients. Cost savings related to avoiding unnecessary medical retrievals were estimated to be AU$481,440. Extrapolated NT-wide cost savings are projected to be AU$5.33 million per annum. POC testing for WBC DIFF counts aided clinical decision making for triaging patients with three common acute infections.
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Abstract
The recent Lancet commission has highlighted that "asthma" should be used to describe a clinical syndrome of wheeze, breathlessness, chest tightness, and sometimes cough. The next step is to deconstruct the airway into components of fixed and variable airflow obstruction, inflammation, infection and altered cough reflex, setting the airway disease in the context of extra-pulmonary co-morbidities and social and environmental factors. The emphasis is always on delineating treatable traits, including variable airflow obstruction caused by airway smooth muscle constriction (treated with short- and long-acting β-2 agonists), eosinophilic airway inflammation (treated with inhaled corticosteroids) and chronic bacterial infection (treated with antibiotics with benefit if it is driving the disease). It is also important not to over-treat the untreatable, such as fixed airflow obstruction. These can all be determined using simple, non-invasive tests such as spirometry before and after acute administration of a bronchodilator (reversible airflow obstruction); peripheral blood eosinophil count, induced sputum, exhaled nitric oxide (airway eosinophilia); and sputum or cough swab culture (bacterial infection). Additionally, the pathophysiology of risk domains must be considered: these are risk of an asthma attack, risk of poor airway growth, and in pre-school children, risk of progression to eosinophilic school age asthma. Phenotyping the airway will allow more precise diagnosis and targeted treatment, but it is important to move to endotypes, especially in the era of increasing numbers of biologicals. Advances in -omics technology allow delineation of pathways, which will be particularly important in TH2 low eosinophilic asthma, and also pauci-inflammatory disease. It is very important to appreciate the difficulties of cluster analysis; a patient may have eosinophilic airway disease because of a steroid resistant endotype, because of non-adherence to basic treatment, and a surge in environmental allergen burden. Sophisticated -omics approaches will be reviewed in this manuscript, but currently they are not being used in clinical practice. However, even while they are being evaluated, management of the asthmas can and should be improved by considering the pathophysiologies of the different airway diseases lumped under that umbrella term, using simple, non-invasive tests which are readily available, and treating accordingly.
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Affiliation(s)
- Andrew Bush
- Departments of Paediatrics and Paediatric Respiratory Medicine, Royal Brompton Harefield NHS Foundation Trust and Imperial College, London, United Kingdom
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15
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Ferrando M, Bagnasco D, Heffler E, Paoletti G, Passalacqua G, Puggioni F, Canonica GW. Personalizing the approach to asthma treatment. EXPERT REVIEW OF PRECISION MEDICINE AND DRUG DEVELOPMENT 2018. [DOI: 10.1080/23808993.2018.1517024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Matteo Ferrando
- Allergy & Respiratory Diseases, IRCCS Policlinico San Martino Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Diego Bagnasco
- Allergy & Respiratory Diseases, IRCCS Policlinico San Martino Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Enrico Heffler
- Personalized Medicine, Asthma and Allergy Clinic, Humanitas Research Hospital, Milano, Italy
- Department of Biomedical Sciences, Humanitas University, Milano, Italy
| | - Giovanni Paoletti
- Department of Biomedical Sciences, Humanitas University, Milano, Italy
- Department of Medical Sciences “M. Aresu”, Allergy and Clinical Immunology Unit, University of Cagliari, Cagliari, Italy
| | - Giovanni Passalacqua
- Allergy & Respiratory Diseases, IRCCS Policlinico San Martino Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Francesca Puggioni
- Personalized Medicine, Asthma and Allergy Clinic, Humanitas Research Hospital, Milano, Italy
- Department of Biomedical Sciences, Humanitas University, Milano, Italy
| | - Giorgio Walter Canonica
- Personalized Medicine, Asthma and Allergy Clinic, Humanitas Research Hospital, Milano, Italy
- Department of Biomedical Sciences, Humanitas University, Milano, Italy
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16
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Abstract
PURPOSE OF REVIEW In this review, we herein describe the progress in management of severe asthma, evolving from a 'blockbuster approach' to a more personalized approach targeted to the utilization of endotype-driven therapies. RECENT FINDINGS Severe asthma characterization in phenotypes and endotypes, by means of specific biomarkers, have led to the dichotomization of the concepts of 'personalized medicine' and 'precision medicine', which are often used as synonyms, but actually have conceptual differences in meaning. The recent contribute of the omic sciences (i.e. proteomics, transcriptomics, metabolomics, genomics, …) has brought this initially theoretic evolution into a more concrete level. SUMMARY This step-by-step transition would bring to a better approach to severe asthmatic patients as the personalization of their therapeutic strategy would bring to a better patient selection, a more precise endotype-driven treatment, and hopefully to better results in terms of reduction of exacerbation rates, symptoms, pulmonary function and quality of life.
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17
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Amat F, Labbé A. Biomarkers for severe allergic asthma in children: could they be useful to guide disease control and use of omalizumab? Expert Rev Respir Med 2018; 12:475-482. [PMID: 29741411 DOI: 10.1080/17476348.2018.1475233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
INTRODUCTION Although symptom controls in asthmatic children can be achieved through compliant use of conventional medication, some children have uncontrolled severe persistent asthma, especially if they are allergic. For these children, omalizumab (approved by the EMA and FDA in children aged > 6 years) could be a therapeutic option. However, response to omalizumab varies from one child to another. Predictive biomarkers of omalizumab effectiveness could be useful to monitor response to treatment. Area covered: The authors searched in the PubMed database for publications related to the use of biomarkers in allergic asthma. Supported by their own experience in phenotyping asthma in children, they analyzed whether these biomarkers could be useful in assessing response to omalizumab. Expert commentary: Th2 inflammation in children with allergic asthma can be assessed by measuring several biomarkers (blood eosinophil, serum ECP or periostin, FeNO). While a single measurement may be insufficient, a combination of biomarkers assessments may improve the follow-up of children treated by omalizumab.
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Affiliation(s)
- Flore Amat
- a Department of Allergology-Centre de l'Asthme et des Allergies, Hôpital d'Enfants Armand Trousseau, Assistance Publique-Hôpitaux de Paris; UPMC Univ Paris 06,Sorbonne Universités; Equipe EPAR , Institut Pierre Louis d'Epidémiologie et de Santé Publique , Paris , France
| | - André Labbé
- b Pediatric Emergency Department , CHU , Clermont-Ferrand , France
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18
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van Bragt JJMH, Vijverberg SJH, Weersink EJM, Richards LB, Neerincx AH, Sterk PJ, Bel EHD, Maitland-van der Zee AH. Blood biomarkers in chronic airways diseases and their role in diagnosis and management. Expert Rev Respir Med 2018; 12:361-374. [PMID: 29575948 DOI: 10.1080/17476348.2018.1457440] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION The complexity and heterogeneous nature of asthma and chronic obstructive pulmonary disease (COPD) results in difficulties in diagnosing and treating patients. Biomarkers that can identify underlying mechanisms, identify patient phenotypes and to predict treatment response could be of great value for adequate treatment. Areas covered: Biomarkers play an important role for the development of novel targeted therapies in airways disease. Blood biomarkers are relatively non-invasive, easy to obtain and easy to apply in routine care. Several blood biomarkers are being used to diagnose and monitor chronic airways diseases, as well as to predict response to treatment and long-term prognosis. Blood eosinophils are the best studied biomarker, the most applied in clinical practice, and until now the most promising of all blood biomarkers. Other blood biomarkers, including serum periostin, IgE and ECP and plasma fibrinogen are less studied and less relevant in clinical practice. Recent developments include the use of antibody assays of many different cytokines at the same time, and 'omics' techniques and systems medicine. Expert commentary: With the exception of blood eosinophils, the use of blood biomarkers in asthma and COPD has been rather disappointing. Future research using new technologies like big-data analysis of blood samples from real-life patient cohorts will probably gain better insight into underlying mechanisms of different disease phenotypes. Identification of specific molecular pathways and associated biomarkers will then allow the development of new targets for precision medicine.
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Affiliation(s)
- Job J M H van Bragt
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Susanne J H Vijverberg
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Els J M Weersink
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Levi B Richards
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Anne H Neerincx
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Peter J Sterk
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Elisabeth H D Bel
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
| | - Anke H Maitland-van der Zee
- a Department of Respiratory Medicine, Academic Medical Center (AMC) , University of Amsterdam , Amsterdam , the Netherlands
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Karawajczyk M, Larsson A. Point-of-care instruments need to offer high levels of accuracy. Acta Paediatr 2017; 106:1707. [PMID: 28752551 DOI: 10.1111/apa.14003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Malgorzata Karawajczyk
- Section of Clinical Chemistry, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Anders Larsson
- Section of Clinical Chemistry, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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20
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Heffler E, Crimi C, Crimi N. The accuracy of the HemoCue WBC DIFF in assessing blood eosinophils depends on the clinical setting and medical condition. Acta Paediatr 2017; 106:1706. [PMID: 28695646 DOI: 10.1111/apa.13979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Enrico Heffler
- Department of Biomedical Sciences; Humanitas University; Milan Italy
- Personalized Medicine, Allergy and Asthma; Humanitas Research Hospital; Milan Italy
| | - Claudia Crimi
- Respiratory Intensive Care Unit; Cannizzaro Hospital; Catania Italy
| | - Nunzio Crimi
- Department of Clinical and Experimental Medicine; Respiratory Medicine and Allergy; University of Catania; Catania Italy
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21
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Hambleton K, Connolly CM, Borg C, Davies JH, Jeffers HP, Russell RE, Bafadhel M. Comparison of the peripheral blood eosinophil count using near-patient testing and standard automated laboratory measurement in healthy, asthmatic and COPD subjects. Int J Chron Obstruct Pulmon Dis 2017; 12:2771-2775. [PMID: 29026294 PMCID: PMC5627756 DOI: 10.2147/copd.s147216] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Near-patient testing (NPT) allows clinical decisions to be made in a rapid and convenient manner and is often cost effective. In COPD the peripheral blood eosinophil count has been demonstrated to have utility in providing prognostic information and predicting response to treatment during an acute exacerbation. For this potential to be achieved having a reliable NPT of blood eosinophil count would be extremely useful. Therefore, we investigated the use of the HemoCue® WBC Diff System and evaluated its sensitivity and specificity in healthy, asthmatic and COPD subjects. This method requires a simple skin prick of blood and was compared to standard venepuncture laboratory analysis. The HemoCue® WBC Diff System measured the peripheral blood eosinophil count in healthy, asthma and COPD subjects with very close correlation to the eosinophil count as measured by standard venepuncture. The correlations were unaffected by disease status. This method for the measurement of the peripheral blood eosinophil count has the potential to provide rapid near-patient results and thus influence the speed of management decisions in the treatment of airway diseases.
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Affiliation(s)
- Kirsty Hambleton
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Clare M Connolly
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Catherine Borg
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Joanne H Davies
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Helen P Jeffers
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Richard Ek Russell
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Mona Bafadhel
- Respiratory Medicine Unit, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
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