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Stolbrink M, Chinouya MJ, Jayasooriya S, Nightingale R, Evans-Hill L, Allan K, Allen H, Balen J, Beacon T, Bissell K, Chakaya J, Chiang CY, Cohen M, Devereux G, El Sony A, Halpin DMG, Hurst JR, Kiprop C, Lawson A, Macé C, Makhanu A, Makokha P, Masekela R, Meme H, Khoo EM, Nantanda R, Pasternak S, Perrin C, Reddel H, Rylance S, Schweikert P, Were C, Williams S, Winders T, Yorgancioglu A, Marks GB, Mortimer K. Improving access to affordable quality-assured inhaled medicines in low- and middle-income countries. Int J Tuberc Lung Dis 2022; 26:1023-1032. [PMID: 36281039 PMCID: PMC9621306 DOI: 10.5588/ijtld.22.0270] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/30/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND: Access to affordable inhaled medicines for chronic respiratory diseases (CRDs) is severely limited in low- and middle-income countries (LMICs), causing avoidable morbidity and mortality. The International Union Against Tuberculosis and Lung Disease convened a stakeholder meeting on this topic in February 2022.METHODS: Focused group discussions were informed by literature and presentations summarising experiences of obtaining inhaled medicines in LMICs. The virtual meeting was moderated using a topic guide around barriers and solutions to improve access. The thematic framework approach was used for analysis.RESULTS: A total of 58 key stakeholders, including patients, healthcare practitioners, members of national and international organisations, industry and WHO representatives attended the meeting. There were 20 pre-meeting material submissions. The main barriers identified were 1) low awareness of CRDs; 2) limited data on CRD burden and treatments in LMICs; 3) ineffective procurement and distribution networks; and 4) poor communication of the needs of people with CRDs. Solutions discussed were 1) generation of data to inform policy and practice; 2) capacity building; 3) improved procurement mechanisms; 4) strengthened advocacy practices; and 5) a World Health Assembly Resolution.CONCLUSION: There are opportunities to achieve improved access to affordable, quality-assured inhaled medicines in LMICs through coordinated, multi-stakeholder, collaborative efforts.
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Affiliation(s)
- M Stolbrink
- Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK, Stellenbosch University, Tygerberg, South Africa
| | - M J Chinouya
- Education Department, Liverpool School of Tropical Medicine, Liverpool, UK
| | - S Jayasooriya
- Academic Unit of Primary Care, University of Sheffield, Sheffield, UK
| | - R Nightingale
- Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK, IcFEM Dreamland Mission Hospital, Kimilili, Kenya
| | | | - K Allan
- Healthcare Consultant, Medical Research Council Unit The Gambia at London School of Hygiene & Tropical Medicine, The Gambia
| | - H Allen
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical Medicine, The Gambia
| | - J Balen
- School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - T Beacon
- Medical Aid International, Bedford, UK
| | - K Bissell
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - J Chakaya
- Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK, Department of Medicine, Therapeutics and Dermatology, Kenyatta University, Nairobi, Kenya
| | - C-Y Chiang
- International Union Against Tuberculosis and Lung Disease, Paris, France, Division of Pulmonary Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - M Cohen
- Asociación Latinoamericana del Tórax, Forum of International Respiratory Societies, Guatemala
| | - G Devereux
- Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - A El Sony
- The Epidemiological Laboratory (Epi-Lab) for Public Health, Research and Development, Khartoum Sudan
| | - D M G Halpin
- University of Exeter Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
| | - J R Hurst
- UCL Respiratory, University College London, London, UK
| | - C Kiprop
- IcFEM Dreamland Mission Hospital, Kimilili, Kenya
| | | | - C Macé
- International Union Against Tuberculosis and Lung Disease, Paris, France
| | - A Makhanu
- IcFEM Dreamland Mission Hospital, Kimilili, Kenya
| | - P Makokha
- IcFEM Dreamland Mission Hospital, Kimilili, Kenya
| | - R Masekela
- Department of Paediatrics and Child Health, School of Clinical Medicine, University of KwaZulu Natal, Durban, South Africa
| | - H Meme
- Centre for Respiratory Diseases Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - E M Khoo
- Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia, International Primary Care Respiratory Group, Larbert, Scotland, UK
| | - R Nantanda
- Makerere University Lung Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | | | - C Perrin
- International Union Against Tuberculosis and Lung Disease, Paris, France
| | - H Reddel
- The Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW, Australia, Global Initiative for Asthma (GINA), Fontana, WI, USA
| | - S Rylance
- Noncommunicable Diseases Department, World Health Organization, Geneva, Switzerland
| | | | - C Were
- GlaxoSmithKline, Brentford, UK
| | - S Williams
- International Primary Care Respiratory Group, Larbert, Scotland, UK
| | - T Winders
- Global Allergy & Airways Patient Platform, Vienna, Austria
| | - A Yorgancioglu
- Department of Pulmonology, Celal Bayar University Medical Faculty, Manisa, Turkey, Global Alliance Against Chronic Respiratory Diseases, Geneva, Switzerland
| | - G B Marks
- International Union Against Tuberculosis and Lung Disease, Paris, France, University of New South Wales, Sydney, NSW, Australia
| | - K Mortimer
- International Union Against Tuberculosis and Lung Disease, Paris, France, University of Cambridge, Cambridge, UK
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Hiles SA, Harvey ES, McDonald VM, Peters M, Bardin P, Reynolds PN, Upham JW, Baraket M, Bhikoo Z, Bowden J, Brockway B, Chung LP, Cochrane B, Foxley G, Garrett J, Hew M, Jayaram L, Jenkins C, Katelaris C, Katsoulotos G, Koh MS, Kritikos V, Lambert M, Langton D, Lara Rivero A, Marks GB, Middleton PG, Nanguzgambo A, Radhakrishna N, Reddel H, Rimmer J, Southcott AM, Sutherland M, Thien F, Wark PAB, Yang IA, Yap E, Gibson PG. Working while unwell: Workplace impairment in people with severe asthma. Clin Exp Allergy 2018; 48:650-662. [DOI: 10.1111/cea.13153] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 03/22/2018] [Accepted: 03/29/2018] [Indexed: 11/27/2022]
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Gibson PG, Reddel H, McDonald VM, Marks G, Jenkins C, Gillman A, Upham J, Sutherland M, Rimmer J, Thien F, Katsoulotos GP, Cook M, Yang I, Katelaris C, Bowler S, Langton D, Robinson P, Wright C, Yozghatlian V, Burgess S, Sivakumaran P, Jaffe A, Bowden J, Wark PAB, Yan KY, Kritikos V, Peters M, Hew M, Aminazad A, Bint M, Guo M. Effectiveness and response predictors of omalizumab in a severe allergic asthma population with a high prevalence of comorbidities: the Australian Xolair Registry. Intern Med J 2017; 46:1054-62. [PMID: 27350385 DOI: 10.1111/imj.13166] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/02/2016] [Accepted: 06/21/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND Severe asthma is a high impact disease. Omalizumab targets the allergic inflammatory pathway; however, effectiveness data in a population with significant comorbidities are limited. AIMS To describe severe allergic asthma, omalizumab treatment outcomes and predictors of response among the Australian Xolair Registry participants. METHODS A web-based post-marketing surveillance registry was established to characterise the use, effectiveness and adverse effects of omalizumab (Xolair) for severe allergic asthma. RESULTS Participants (n = 192) (mean age 51 years, 118 female) with severe allergic asthma from 21 clinics in Australia were assessed, and 180 received omalizumab therapy. They had poor asthma control (Asthma Control Questionnaire, ACQ-5, mean score 3.56) and significant quality of life impairment (Asthma-related Quality of Life Questionnaire score 3.57), and 52% were using daily oral corticosteroid (OCS). Overall, 95% had one or more comorbidities (rhinitis 48%, obesity 45%, cardiovascular disease 23%). The omalizumab responder rate, assessed by an improvement of at least 0.5 in ACQ-5, was high at 83%. OCS use was significantly reduced. The response in participants with comorbid obesity and cardiovascular disease was similar to those without these conditions. Baseline ACQ-5 ≥ 2.0 (P = 0.002) and older age (P = 0.05) predicted the magnitude of change in ACQ-5 in response to omalizumab. Drug-related adverse events included anaphylactoid reactions (n = 4), headache (n = 2) and chest pains (n = 1). CONCLUSION Australian patients with severe allergic asthma report a high disease burden and have extensive comorbidity. Symptomatic response to omalizumab was high despite significant comorbid disease. Omalizumab is an effective targeted therapy for severe allergic asthma with comorbidity in a real-life setting.
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Affiliation(s)
- P G Gibson
- Centre for Healthy Lungs, Department of Respiratory and Sleep Medicine, John Hunter Hospital, Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales, Australia.
| | - H Reddel
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.,University of Sydney, Liverpool Hospital, Sydney, New South Wales, Australia
| | - V M McDonald
- Centre for Healthy Lungs, Department of Respiratory and Sleep Medicine, John Hunter Hospital, Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales, Australia.,School of Nursing and Midwifery, University of Newcastle, Newcastle, New South Wales, Australia
| | - G Marks
- Department of Respiratory Medicine, Liverpool Hospital, Sydney, New South Wales, Australia
| | - C Jenkins
- Department of Thoracic Medicine, Concord Hospital, Sydney, New South Wales, Australia
| | - A Gillman
- Department of Allergy, Immunology and Respiratory Medicine, Alfred Hospital, Melbourne, Victoria, Australia
| | - J Upham
- Department of Respiratory Medicine, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - M Sutherland
- Department of Respiratory and Sleep Medicine, Austin Hospital, Melbourne, Victoria, Australia
| | - J Rimmer
- St Vincent's Clinic, Campbelltown Hospital, Sydney, New South Wales, Australia
| | - F Thien
- Department of Respiratory Medicine, Box Hill Hospital, Melbourne, Victoria, Australia
| | - G P Katsoulotos
- St George Specialist Centre, Campbelltown Hospital, Sydney, New South Wales, Australia
| | - M Cook
- Department of Immunology, Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - I Yang
- Department of Thoracic Medicine, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - C Katelaris
- Department of Respiratory and Sleep Medicine, Campbelltown Hospital, Sydney, New South Wales, Australia
| | - S Bowler
- Department of Respiratory and Sleep Medicine, Mater Adult Hospital, Brisbane, Queensland, Australia
| | - D Langton
- Department of Thoracic Medicine, Frankston Hospital, Melbourne, Victoria, Australia
| | - P Robinson
- Department of Respiratory Medicine, Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - C Wright
- Department of Respiratory Medicine, Nambour Hospital, Nambour, Queensland, Australia
| | - V Yozghatlian
- Department of Respiratory and Sleep Medicine, St George Hospital, Sydney, New South Wales, Australia
| | - S Burgess
- QLD Children's Lung and Sleep Specialists, Brisbane, Queensland, Australia
| | - P Sivakumaran
- Department of Respiratory Medicine, Gold Coast District Hospital, Gold Coast, Queensland, Australia
| | - A Jaffe
- Department of Respiratory Medicine, Sydney Children's Hospital, Sydney, New South Wales, Australia
| | - J Bowden
- Department of Respiratory, Allergy and Sleep Medicine, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - P A B Wark
- Centre for Healthy Lungs, Department of Respiratory and Sleep Medicine, John Hunter Hospital, Hunter Medical Research Institute, University of Newcastle, Newcastle, New South Wales, Australia
| | - K Y Yan
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - V Kritikos
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - M Peters
- Department of Thoracic Medicine, Concord Hospital, Sydney, New South Wales, Australia
| | - M Hew
- Department of Allergy, Immunology and Respiratory Medicine, Alfred Hospital, Melbourne, Victoria, Australia
| | - A Aminazad
- Department of Respiratory Medicine, Box Hill Hospital, Melbourne, Victoria, Australia
| | - M Bint
- Department of Respiratory Medicine, Nambour Hospital, Nambour, Queensland, Australia
| | - M Guo
- Clinical Management, Woolcock Institute of Medical Research, Sydney, New South Wales, Australia
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Affiliation(s)
- H Reddel
- Insitute of Respiratory Medicine, Royal Prince Alfred Hospital and University of Sydney, PO Box M77, Camperdown, NSW 2050, Australia.
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Abstract
BACKGROUND Increased variation in peak expiratory flow (PEF) is characteristic of poorly controlled asthma, and measurement of diurnal variability of PEF has been recommended for assessment of asthma severity, including during exacerbations. We aimed to test whether asthma exacerbations had the same PEF characteristics as poor asthma control. METHODS Electronic PEF records from 43 patients with initially poorly controlled asthma were examined for all exacerbations that occurred after PEF reached a plateau with inhaled corticosteroid treatment. Diurnal variability of PEF was compared during exacerbations, run-in (poor asthma control), and the period of stable asthma before each exacerbation. FINDINGS Diurnal variability was 21.3% during poor asthma control and improved to 5.3% (stable asthma) with inhaled corticosteroid treatment. 40 exacerbations occurred in 26 patients over 2-16 months; 38 (95%) of exacerbations were associated with symptoms of clinical respiratory infection. During exacerbations, consecutive PEF values fell linearly over several days then improved linearly. However, diurnal variability during exacerbations (7.7%) was not significantly higher than during stable asthma (5.4%, p=0.1). PEF data were consistent with impaired response to inhaled beta2-agonist during exacerbations but not during poorly controlled asthma. INTERPRETATION Asthmatics remain vulnerable to exacerbations during clinical respiratory infections, even after asthma is brought under control. Calculation of diurnal variability may fail to detect important changes in lung function. PEF variation is strikingly different during exacerbations compared with poor asthma control, suggesting differences in beta2-adrenoceptor function between these conditions.
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Affiliation(s)
- H Reddel
- Institute of Respiratory Medicine at Royal Prince Alfred Hospital and the University of Sydney, Camperdown, NSW, Australia.
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Woolcock AJ, Reddel H, Trevillion L. Assessment of airway responsiveness as a guide to diagnosis, prognosis, and therapy in asthma. Allergy Proc 1995; 16:23-6. [PMID: 7768456 DOI: 10.2500/108854195778690020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- A J Woolcock
- Institute of Respiratory Medicine, Royal Prince Alfred Hospital, Camperdown, Australia
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Gabrielson EW, Van der Meeren A, Reddel RR, Reddel H, Gerwin BI, Harris CC. Human mesothelioma cells and asbestos-exposed mesothelial cells are selectively resistant to amosite toxicity: a possible mechanism for tumor promotion by asbestos. Carcinogenesis 1992; 13:1359-63. [PMID: 1323425 DOI: 10.1093/carcin/13.8.1359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
To determine if asbestos exposure could contribute to mesothelial cell carcinogenesis by selection and/or expansion of an initiated cell population, we compared normal human pleural mesothelial cells to either human mesothelioma cell lines or mesothelial cells transfected with cancer-related genes for sensitivity to amosite fibers in vitro. Neither normal nor mesothelioma cells were directly stimulated to replicate or increase DNA synthesis by any of the asbestos exposure conditions tested. The potential selective effect of asbestos exposure was demonstrated by a differential sensitivity of normal mesothelial cells and mesothelioma cells to amosite: for example, up to 20-fold higher concentrations of amosite fibers were required to inhibit replication of mesothelioma cell lines than normal mesothelial cells. In addition, a significant resistance (4-fold) to amosite toxicity was observed for SV40 immortalized mesothelial cell lines that had previously been selected in vitro for resistance to asbestos. SV40 immortalized cells that have become tumorigenic after transfection with either Ha-ras or PDGF A-chain genes were not significantly more resistant to the cytotoxic effects of amosite than primary normal cells, and the primary cells were equally sensitive to amosite as mesothelial cells that were only immortalized by SV40. The sensitivity of normal mesothelial cells to asbestos does not appear to be simply a result of general fragility of the mesothelial cells, since similar levels of hydrogen peroxide and silica were cytotoxic for normal mesothelial cells and mesothelioma cell lines. Because mesothelioma cells have a greater resistance to asbestos cytotoxicity than normal mesothelial cells, we hypothesize that a differential resistance to cell killing by asbestos fibers in vivo may result in a selective expansion of an initiated or transformed cell population and thus contribute to the carcinogenesis process. Since tumorigenicity and asbestos resistance occur independently of one another in genetically altered mesothelial cell lines, genotypic and phenotypic alterations that lead to tumorigenic conversion may not be the same changes that provide resistance to cell killing by asbestos.
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Affiliation(s)
- E W Gabrielson
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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