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Withers HG, Glinsky JV, Chu J, Jennings MD, Starkey I, Parmeter R, Boulos M, Cruwys JJ, Duong K, Jordan I, Wong D, Trang S, Duong M, Liu H, Hayes AJ, Lambert TE, Zadro JR, Sherrington C, Maher C, Lucas BR, Taylor D, Ferreira ML, Harvey LA. Remotely delivered physiotherapy is as effective as face-to-face physiotherapy for musculoskeletal conditions (REFORM): a randomised trial. J Physiother 2024; 70:124-133. [PMID: 38494405 DOI: 10.1016/j.jphys.2024.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/09/2024] [Accepted: 02/26/2024] [Indexed: 03/19/2024] Open
Abstract
QUESTION Is remotely delivered physiotherapy as good or better than face-to-face physiotherapy for the management of musculoskeletal conditions? DESIGN Randomised controlled, non-inferiority trial with concealed allocation, blinded assessors and intention-to-treat analysis. PARTICIPANTS A total of 210 adult participants with a musculoskeletal condition who presented for outpatient physiotherapy at five public hospitals in Sydney. INTERVENTION One group received a remotely delivered physiotherapy program for 6 weeks that consisted of one face-to-face physiotherapy session in conjunction with weekly text messages, phone calls at 2 and 4 weeks, and an individualised home exercise program delivered through an app. The other group received usual face-to-face physiotherapy care in an outpatient setting. OUTCOME MEASURES The primary outcome was the Patient Specific Functional Scale at 6 weeks with a pre-specified non-inferiority margin of -15 out of 100 points. Secondary outcomes included: the Patient Specific Functional Scale at 26 weeks; kinesiophobia, pain, function/disability, global impression of change and quality of life at 6 and 26 weeks; and satisfaction with service delivery at 6 weeks. RESULTS The mean between-group difference (95% CI) for the Patient Specific Functional Scale at 6 weeks was 2.7 out of 100 points (-3.5 to 8.8), where a positive score favoured remotely delivered physiotherapy. The lower end of the 95% CI was greater than the non-inferiority margin. Whilst non-inferiority margins were not set for the secondary outcomes, the 95% CI of the mean between-group difference ruled out clinically meaningful differences. CONCLUSION Remotely delivered physiotherapy with support via phone, text and an app is as good as face-to-face physiotherapy for the management of musculoskeletal conditions. TRIAL REGISTRATION ACTRN12619000065190.
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Affiliation(s)
- Hannah G Withers
- John Walsh Centre for Rehabilitation Research, Kolling Institute, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Joanne V Glinsky
- John Walsh Centre for Rehabilitation Research, Kolling Institute, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Jackie Chu
- John Walsh Centre for Rehabilitation Research, Kolling Institute, Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | | | - Ian Starkey
- Physiotherapy Department, Blacktown and Mt Druitt Hospitals, Sydney, Australia
| | - Rachel Parmeter
- Physiotherapy Department, Blacktown and Mt Druitt Hospitals, Sydney, Australia
| | - Max Boulos
- Musculoskeletal and Cancer Outpatients, Orthopaedics, ED, Fracture Clinic, Women's Health, Camden and Campbelltown Hospital, Sydney, Australia
| | - Jackson J Cruwys
- Physiotherapy Department, Camden and Campbelltown Hospital, Sydney, Australia
| | - Kitty Duong
- Physiotherapy Department, Camden and Campbelltown Hospital, Sydney, Australia
| | - Ian Jordan
- Physiotherapy Department, Hornsby-Ku-Ring-Gai Hospital, Sydney, Australia
| | - David Wong
- Physiotherapy Department, Liverpool Hospital, Sydney, Australia
| | - San Trang
- Physiotherapy Department, Bankstown-Lidcombe Hospital, Sydney, Australia
| | - Maggie Duong
- Physiotherapy Department, Bankstown-Lidcombe Hospital, Sydney, Australia
| | - Hueiming Liu
- The George Institute for Global Health, Sydney, Australia
| | - Alison J Hayes
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
| | - Tara E Lambert
- Physiotherapy Department, Royal North Shore Hospital, Sydney, Australia
| | - Joshua R Zadro
- Institute for Musculoskeletal Health, The University of Sydney, Sydney, Australia
| | | | - Christopher Maher
- Institute for Musculoskeletal Health, The University of Sydney, Sydney, Australia
| | - Barbara R Lucas
- Sydney Musculoskeletal Health, School of Health Sciences, The University of Sydney, Sydney, Australia
| | - Deborah Taylor
- Physiotherapy Department, Royal North Shore Hospital, Sydney, Australia
| | - Manuela L Ferreira
- Sydney Musculoskeletal Health, School of Health Sciences, The University of Sydney, Sydney, Australia
| | - Lisa A Harvey
- John Walsh Centre for Rehabilitation Research, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
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Withers HG, Liu H, Glinsky JV, Chu J, Jennings MD, Hayes AJ, Starkey IJ, Palmer BA, Szymanek L, Cruwys JJ, Wong D, Duong K, Barnett A, Tindall MJ, Lucas BR, Lambert TE, Taylor DA, Sherrington C, Ferreira ML, Maher CG, Zadro JR, Harvey LA. Protocol for a process evaluation: face-to-face physiotherapy compared with a supported home exercise programme for the management of musculoskeletal conditions: the REFORM trial. BMJ Open 2022; 12:e057790. [PMID: 35790326 PMCID: PMC9258511 DOI: 10.1136/bmjopen-2021-057790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION The REFORM (REhabilitation FOR Musculoskeletal conditions) trial is a non-inferiority randomised controlled trial (n=210) designed to determine whether a supported home exercise programme is as good or better than a course of face-to-face physiotherapy for the management of some musculoskeletal conditions. The trial is currently being conducted across Sydney government hospitals in Australia. This process evaluation will run alongside the REFORM trial. It combines qualitative and quantitative data to help explain the trial results and determine the feasibility of rolling out supported home exercise programmes in settings similar to the REFORM trial. METHODS AND ANALYSIS Two theoretical frameworks underpin our process evaluation methodology: the Realist framework (context, mechanism, outcomes) considers the causal assumptions as to why a supported home exercise programme may be as good or better than face-to-face physiotherapy in terms of the context, mechanisms and outcomes of the trial. The RE-AIM framework describes the Reach, Effectiveness, Adoption, Implementation and Maintenance of the intervention. These two frameworks will be broadly used to guide this process evaluation using a mixed-methods approach. For example, qualitative data will be derived from interviews with patients, healthcare professionals and stakeholders, and quantitative data will be collected to determine the cost and feasibility of providing supported home exercise programmes. These data will be analysed iteratively before the analysis of the trial results and will be triangulated with the results of the primary and secondary outcomes. ETHICS AND DISSEMINATION This trial will be conducted in accordance with the National Health and Medical Research Council National Statement on Ethical Conduct in Human Research (2018) and the Note for Good Clinical Practice (CPMP/ICH-135/95). Ethical approval was obtained on 17 March 2017 from the Northern Sydney Local Health District Human Research Ethics Committee (trial number: HREC/16HAWKE/431-RESP/16/287) with an amendment for the process evaluation approved on 4 February 2020. The results of the process evaluation will be disseminated through publications in peer-reviewed journals and presentations at scientific conferences. TRIAL REGISTRATION NUMBER ACTRN12619000065190.
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Affiliation(s)
- Hannah G Withers
- John Walsh Centre for Rehabilitation Research, Northern Sydney Local Health District, The University of Sydney, Kolling Institute, Sydney, NSW, Australia
| | - Hueiming Liu
- The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Joanne V Glinsky
- John Walsh Centre for Rehabilitation Research, Northern Sydney Local Health District, The University of Sydney, Kolling Institute, Sydney, NSW, Australia
| | - Jackie Chu
- John Walsh Centre for Rehabilitation Research, Northern Sydney Local Health District, The University of Sydney, Kolling Institute, Sydney, NSW, Australia
| | - Matthew D Jennings
- Physiotherapy Department, South Western Sydney Local Health District, Liverpool, New South Wales, Australia
| | - Alison J Hayes
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Ian J Starkey
- Physiotherapy Department, Blacktown and Mount Druitt Hospital, Blacktown, New South Wales, Australia
| | - Blake A Palmer
- Physiotherapy Department, Blacktown and Mount Druitt Hospital, Blacktown, New South Wales, Australia
| | - Lukas Szymanek
- Physiotherapy Department, Campbelltown Hospital, Campbelltown, New South Wales, Australia
| | - Jackson J Cruwys
- Physiotherapy Department, Campbelltown Hospital, Campbelltown, New South Wales, Australia
| | - David Wong
- Physiotherapy Department, Liverpool Hospital, Liverpool, New South Wales, Australia
| | - Kitty Duong
- Physiotherapy Department, Liverpool Hospital, Liverpool, New South Wales, Australia
| | - Anne Barnett
- Physiotherapy Department, Bankstown Hospital, Bankstown, New South Wales, Australia
| | - Matthew J Tindall
- Physiotherapy Department, Bankstown Hospital, Bankstown, New South Wales, Australia
| | - Barbara R Lucas
- Physiotherapy Department, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Tara E Lambert
- Physiotherapy Department, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Deborah A Taylor
- Physiotherapy Department, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Catherine Sherrington
- Institute for Musculoskeletal Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Manuela L Ferreira
- Sydney Musculoskeletal Health, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Christopher G Maher
- Institute for Musculoskeletal Health, School of Public Health, The University of Sydney, Camperdown, New South Wales, Australia
| | - Joshua R Zadro
- Institute for Musculoskeletal Health, School of Public Health, The University of Sydney, Camperdown, New South Wales, Australia
| | - Lisa A Harvey
- John Walsh Centre for Rehabilitation Research, Northern Sydney Local Health District, The University of Sydney, Kolling Institute, Sydney, NSW, Australia
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Withers HG, Glinsky JV, Chu J, Jennings MD, Hayes AJ, Starkey IJ, Palmer BA, Szymanek L, Cruwys JJ, Wong D, Duong K, Barnett A, Tindall MJ, Lucas BR, Lambert TE, Sherrington C, Maher CG, Ferreira ML, Taylor DA, Harvey LA. Face-to-face physiotherapy compared with a supported home exercise programme for the management of musculoskeletal conditions: protocol of a multicentre, randomised controlled trial-the REFORM trial. BMJ Open 2021; 11:e041242. [PMID: 34006536 PMCID: PMC8130735 DOI: 10.1136/bmjopen-2020-041242] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Exercise, support and advice are considered core components of management for most musculoskeletal conditions and are typically provided by physiotherapists through regular face-to-face treatments. However, exercise can be provided remotely as part of a home exercise programme, while support and advice can be provided over the telephone. There is initial evidence from trials and systematic reviews to suggest that remotely provided physiotherapy can be used to manage a variety of musculoskeletal conditions safely and effectively. METHODS AND ANALYSIS The aim of this single-blind randomised controlled non-inferiority trial is to determine whether a supported home exercise programme is as good as or better than face-to-face physiotherapy for the treatment of musculoskeletal conditions. Two hundred and ten participants will be recruited from five public hospitals in Sydney, Australia. Participants will be randomised to either the supported home exercise group or the face-to-face physiotherapy group. Participants allocated to the supported home exercise group will initially receive one face-to-face session with the trial physiotherapist and will then be managed remotely for the next 6 weeks. Participants allocated to the face-to-face physiotherapy group will receive a course of physiotherapy as typically provided in Sydney government hospitals. The primary outcome is function measured by the Patient Specific Functional Scale at 6 weeks. There will be nine secondary outcomes measured at 6 and 26 weeks. Separate analyses will be conducted on each outcome, and all analyses will be conducted on an intention-to-treat basis. A health economic evaluation will be conducted from a health funder plus patient perspective. ETHICS AND DISSEMINATION Ethical approval was obtained on the 17 March 2017 from the Northern Sydney Local Health District HREC, trial number HREC/16HAWKE/431-RESP/16/287. The results of this study will be submitted for publication to peer-reviewed journals and be presented at national and international conferences. Recruitment commenced in March 2019, and it is anticipated that the trial will be completed by December 2021. This trial will investigate two different models of physiotherapy care for people with musculoskeletal conditions. TRIAL REGISTRATION NUMBER CPMP/ICH-135/95. PROTOCOL VERSION The most recent version of the protocol is V.1.2 dated November 2019.
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Affiliation(s)
- Hannah G Withers
- Kolling Institute, The University of Sydney, Sydney, New South Wales, Australia
| | - Joanne V Glinsky
- Kolling Institute, The University of Sydney, Sydney, New South Wales, Australia
- Kolling Institute, Northern Sydney Local Health District, Sydney, New South Wales, Australia
| | - Jackie Chu
- Kolling Institute, The University of Sydney, Sydney, New South Wales, Australia
| | - Matthew D Jennings
- Department of Physiotherapy, South Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Alison J Hayes
- School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Ian J Starkey
- Physiotherapy Department, Blacktown & Mount Druitt Hospital, Sydney, New South Wales, Australia
| | - Blake A Palmer
- Physiotherapy Department, Blacktown & Mount Druitt Hospital, Sydney, New South Wales, Australia
| | - Lukas Szymanek
- Department of Physiotherapy, Campbelltown Hospital, Sydney, New South Wales, Australia
| | - Jackson J Cruwys
- Department of Physiotherapy, Campbelltown Hospital, Sydney, New South Wales, Australia
| | - David Wong
- Department of Physiotherapy, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Kitty Duong
- Department of Physiotherapy, Liverpool Hospital, Sydney, New South Wales, Australia
| | - Anne Barnett
- Department of Physiotherapy, Bankstown Hospital, Sydney, New South Wales, Australia
| | - Matthew J Tindall
- Department of Physiotherapy, Bankstown Hospital, Sydney, New South Wales, Australia
| | - Barbara R Lucas
- Department of Physiotherapy, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Tara E Lambert
- Department of Physiotherapy, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Catherine Sherrington
- Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
| | - Christopher G Maher
- Institute for Musculoskeletal Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Manuela L Ferreira
- Institute of Bone and Joint Research, University of Sydney, Sydney, New South Wales, Australia
| | - Deborah A Taylor
- Department of Physiotherapy, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Lisa A Harvey
- Kolling Institute, The University of Sydney, Sydney, New South Wales, Australia
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Hakim MA, Garden FL, Jennings MD, Dobler CC. Performance of the LACE index to predict 30-day hospital readmissions in patients with chronic obstructive pulmonary disease. Clin Epidemiol 2017; 10:51-59. [PMID: 29343987 PMCID: PMC5751805 DOI: 10.2147/clep.s149574] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background and objective Patients hospitalized for acute exacerbation of chronic obstructive pulmonary disease (COPD) have a high 30-day hospital readmission rate, which has a large impact on the health care system and patients’ quality of life. The use of a prediction model to quantify a patient’s risk of readmission may assist in directing interventions to patients who will benefit most. The objective of this study was to calculate the rate of 30-day readmissions and evaluate the accuracy of the LACE index (length of stay, acuity of admission, co-morbidities, and emergency department visits within the last 6 months) for 30-day readmissions in a general hospital population of COPD patients. Methods All patients admitted with a principal diagnosis of COPD to Liverpool Hospital, a tertiary hospital in Sydney, Australia, between 2006 and 2016 were included in the study. A LACE index score was calculated for each patient and assessed using receiver operator characteristic curves. Results During the study period, 2,662 patients had 5,979 hospitalizations for COPD. Four percent of patients died in hospital and 25% were readmitted within 30 days; 56% of all 30-day readmissions were again due to COPD. The most common reasons for readmission, following COPD, were heart failure, pneumonia, and chest pain. The LACE index had moderate discriminative ability to predict 30-day readmission (C-statistic =0.63). Conclusion The 30-day hospital readmission rate was 25% following hospitalization for COPD in an Australian tertiary hospital and as such comparable to international published rates. The LACE index only had moderate discriminative ability to predict 30-day readmission in patients hospitalized for COPD.
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Affiliation(s)
- Maryam A Hakim
- Department of Respiratory Medicine, Liverpool Hospital.,South Western Sydney Clinical School, University of New South Wales
| | - Frances L Garden
- South Western Sydney Clinical School, University of New South Wales.,Ingham Institute for Applied Medical Research
| | | | - Claudia C Dobler
- Department of Respiratory Medicine, Liverpool Hospital.,South Western Sydney Clinical School, University of New South Wales.,Ingham Institute for Applied Medical Research.,Evidence-Based Practice Center, Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, USA
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Ferreira ML, Ferreira PH, Latimer J, Herbert RD, Hodges PW, Jennings MD, Maher CG, Refshauge KM. Comparison of general exercise, motor control exercise and spinal manipulative therapy for chronic low back pain: A randomized trial. Pain 2007; 131:31-7. [PMID: 17250965 DOI: 10.1016/j.pain.2006.12.008] [Citation(s) in RCA: 265] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2006] [Revised: 10/29/2006] [Accepted: 12/07/2006] [Indexed: 10/23/2022]
Abstract
Practice guidelines recommend various types of exercise and manipulative therapy for chronic back pain but there have been few head-to-head comparisons of these interventions. We conducted a randomized controlled trial to compare effects of general exercise, motor control exercise and manipulative therapy on function and perceived effect of intervention in patients with chronic back pain. Two hundred and forty adults with non-specific low back pain 3months were allocated to groups that received 8weeks of general exercise, motor control exercise or spinal manipulative therapy. General exercise included strengthening, stretching and aerobic exercises. Motor control exercise involved retraining specific trunk muscles using ultrasound feedback. Spinal manipulative therapy included joint mobilization and manipulation. Primary outcomes were patient-specific function (PSFS, 3-30) and global perceived effect (GPE, -5 to 5) at 8weeks. These outcomes were also measured at 6 and 12months. Follow-up was 93% at 8weeks and 88% at 6 and 12months. The motor control exercise group had slightly better outcomes than the general exercise group at 8weeks (between-group difference: PSFS 2.9, 95% CI: 0.9-4.8; GPE 1.7, 95% CI: 0.9-2.4), as did the spinal manipulative therapy group (PSFS 2.3, 95% CI: 0.4-4.2; GPE 1.2, 95% CI: 0.4-2.0). The groups had similar outcomes at 6 and 12months. Motor control exercise and spinal manipulative therapy produce slightly better short-term function and perceptions of effect than general exercise, but not better medium or long-term effects, in patients with chronic non-specific back pain.
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Affiliation(s)
- Manuela L Ferreira
- School of Physiotherapy, Pontifícia Universidade Católica de Minas Gerais, Brazil
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Appleberry EA, Lahey MF, Harsen WF, Paler RJ, Ross Mason S, Jennings MD, McMinn WE. Attempting to reach dental care avoiders with free screenings: findings from 3,922 patients at Detroit-Metro area project Health-O-Rama sites. J Mich Dent Assoc 1986; 68:403-7. [PMID: 3463766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Kaizu T, Lyons SA, Cross CE, Jennings MD, Last JA. Composition of glycoproteins secreted by tracheal explants from various animal species. Comp Biochem Physiol B 1979; 62:195-200. [PMID: 45551 DOI: 10.1016/0305-0491(79)90199-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
1. The acidic and neutral glycoproteins secreted by cultured tracheal explants from pigs, sheep, rats, mice, monkeys, guinea pigs, dogs and chickens were purified and fractionated by column chromatography on DEAE-cellulose and by electrophoresis on cellulose acetate. 2. The ratios of acidic to neutral mucus glycoproteins were compared for the above animals with that of mucus glycoproteins secreted by cultured human bronchi. 3. The observed ratios of acidic to neutral glycoproteins ranged from 4.0 (mouse) to 7.2 (chicken and pig) from cultured tracheae; secreted human bronchial mucus had a ratio of 2.7. 4. The ratio of acidic to neutral glycoproteins secreted by tracheal explants varied with duration of incubation of the trachea in culture.
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Affiliation(s)
- T Kaizu
- California Primate Research Center, University of California, Davis 95616
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Last JA, Jennings MD, Schwartz LW, Cross CE. Glycoprotein secretion by tracheal explants cultured from rats exposed to ozone. Am Rev Respir Dis 1977; 116:695-703. [PMID: 921053 DOI: 10.1164/arrd.1977.116.4.695] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Tracheal explants from rats exposed to 0.8 ppm (1.9 mg per m3) of ozone 8 hours per day for 1 to 90 days were incubated in culture with glucosamine labeled with carbon-14 or hydrogen-3. Compared with tracheas from control rats exposed to filtered air, the explants demonstrated a decreased rate of glycoprotein secretion for exposure intervals of as long as one week, followed by a rebound to an increased rate of glycoprotein secretion for at least 12 weeks of continued exposure to ozone. Detailed study of the behavior of labeled glycoproteins from the culture medium on chromatography on columns of BioGel A-150m demonstrated that the ratio of the low to high molecular weight peaks increased when there was an increased rate of glycoprotein secretion. This is the first report of a direct biochemical effect induced by ozone on airway metabolism.
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