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Harris FM, Mou Z. Damage-Associated Molecular Patterns and Systemic Signaling. Phytopathology 2024; 114:308-327. [PMID: 37665354 DOI: 10.1094/phyto-03-23-0104-rvw] [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] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Cellular damage inflicted by wounding, pathogen infection, and herbivory releases a variety of host-derived metabolites, degraded structural components, and peptides into the extracellular space that act as alarm signals when perceived by adjacent cells. These so-called damage-associated molecular patterns (DAMPs) function through plasma membrane localized pattern recognition receptors to regulate wound and immune responses. In plants, DAMPs act as elicitors themselves, often inducing immune outputs such as calcium influx, reactive oxygen species generation, defense gene expression, and phytohormone signaling. Consequently, DAMP perception results in a priming effect that enhances resistance against subsequent pathogen infections. Alongside their established function in local tissues, recent evidence supports a critical role of DAMP signaling in generation and/or amplification of mobile signals that induce systemic immune priming. Here, we summarize the identity, signaling, and synergy of proposed and established plant DAMPs, with a focus on those with published roles in systemic signaling.
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Affiliation(s)
- Fiona M Harris
- Department of Microbiology and Cell Science, University of Florida, P.O. Box 110700, Gainesville, FL 32611
| | - Zhonglin Mou
- Department of Microbiology and Cell Science, University of Florida, P.O. Box 110700, Gainesville, FL 32611
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McKell J, Harris FM, Sinclair L, Bauld L, Tappin DM, Hoddinott P. Usual care in a multicentre randomised controlled trial of financial incentives for smoking cessation in pregnancy: qualitative findings from a mixed-methods process evaluation. BMJ Open 2022; 12:e066494. [PMID: 36600364 PMCID: PMC9730354 DOI: 10.1136/bmjopen-2022-066494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 11/07/2022] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Financial incentives are recommended by the UK's National Institute for Health and Care Excellence to aid smoking cessation in pregnancy. However, little is known about how implementation contexts might impact on their effectiveness. Variations in smoking cessation support (usual care) for pregnant women who smoke were examined qualitatively as part of a prospective process evaluation of the Cessation in Pregnancy Incentives Trial (CPIT III). DESIGN Longitudinal case studies of five CPIT III trial sites informed by realist evaluation. SETTING A stop smoking service (SSS) serving a maternity hospital constituted each case study, located in three UK countries. PARTICIPANTS Data collection included semistructured interviews with trial participants (n=22), maternity (n=12) and SSS staff (n=17); and site observations and perspectives recorded in fieldnotes (n=85). RESULTS Cessation support (usual care) for pregnant women varied in amount, location, staff capacity, flexibility and content across sites. SSS staff capacity was important to avoid gaps in support. Colocation and good working relationships between maternity and SSS professionals enabled prioritisation and reinforced the importance of smoking cessation. Sites with limited use of carbon monoxide (CO) monitoring reduced opportunities to identify smokers while inconsistency around automatic referral processes prevented the offer of cessation support. SSS professionals colocated within antenatal clinics were available to women they could not otherwise reach. Flexibility around location, timing and tailoring of approaches for support, facilitated initial and sustained engagement and reduced the burden on women. CONCLUSIONS Trial sites faced varied barriers and facilitators to delivering cessation support, reflecting heterogeneity in usual care. If financial incentives are more effective with concurrent smoking cessation support, sites with fewer barriers and more facilitators regarding this support would be expected to have more promising trial outcomes. Future reporting of trial outcomes will assist in understanding incentives' generalisability across a wide range of usual care settings. TRIAL REGISTRATION NUMBER ISRCTN15236311.
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Affiliation(s)
- Jennifer McKell
- Institute for Social Marketing and Health, University of Stirling, Stirling, UK
| | - Fiona M Harris
- School of Health and Life Sciences, University of the West of Scotland, Paisley, UK
| | - Lesley Sinclair
- Department of Health Sciences, University of York, York, North Yorkshire, UK
| | - Linda Bauld
- Usher Institute of Population Health Sciences and Informatics, and SPECTRUM Research Consortium, University of Edinburgh, Edinburgh, UK
| | | | - Pat Hoddinott
- Nursing, Midwifery and Allied Health Professional Research Unit, University of Stirling, Stirling, UK
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Tappin D, Sinclair L, Kee F, McFadden M, Robinson-Smith L, Mitchell A, Keding A, Watson J, Watson S, Dick A, Torgerson D, Hewitt C, McKell J, Hoddinott P, Harris FM, Boyd KA, McMeekin N, Ussher M, Bauld L. Effect of financial voucher incentives provided with UK stop smoking services on the cessation of smoking in pregnant women (CPIT III): pragmatic, multicentre, single blinded, phase 3, randomised controlled trial. BMJ 2022; 379:e071522. [PMID: 36261162 PMCID: PMC9580214 DOI: 10.1136/bmj-2022-071522] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/25/2022] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To examine effectiveness, cost effectiveness, generalisability, and acceptability of financial incentives for smoking cessation during pregnancy in addition to variously organised UK stop smoking services. DESIGN Pragmatic, multicentre, single blinded, phase 3, randomised controlled trial (Cessation in Pregnancy Incentives Trial phase 3 (CPIT III)). SETTING Seven UK stop smoking services provided in primary and secondary care facilities in Scotland, Northern Ireland, and England. PARTICIPANTS 944 pregnant women (age ≥16 years) who self-reported as being smokers (at least one cigarette in the past week) when asked at first maternity visit, less than 24 weeks' gestation, and notified to the trial team by routine stop smoking services. INTERVENTIONS Participants in the control group were offered the standard stop smoking services, which includes the offer of counselling by specially trained workers using withdrawal orientated therapy and the offer of free nicotine replacement therapy. The intervention was the offer of usual support from the stop smoking services and the addition of up to £400 ($440; €455) of LoveToShop financial voucher incentives for engaging with current stop smoking services or to stop smoking, or both, during pregnancy. MAIN OUTCOME MEASURES Self-reported smoking cessation in late pregnancy (between 34 and 38 weeks' gestation) corroborated by saliva cotinine (and anabasine if using nicotine replacement products). Results were adjusted for age, smoking years, index of multiple deprivation, Fagerström score, before or after covid, and recruitment site. Secondary outcomes included point and continuous abstinence six months after expected date of delivery, engagement with stop smoking services, biochemically validated abstinence from smoking at four weeks after stop smoking date, birth weight of baby, cost effectiveness, generalisability documenting formats of stop smoking services, and acceptability to pregnant women and their carers. RESULTS From 9 January 2018 to 4 April 2020, of 4032 women screened by stop smoking services, 944 people were randomly assigned to the intervention group (n=471) or the control group (n=470). Three people asked for their data to be removed. 126 (27%) of 471 participants stopped smoking from the intervention group and 58 (12%) of 470 from the control group (adjusted odds ratio 2.78 (1.94 to 3.97) P<0.001). Serious adverse events were miscarriages and other expected pregnancy events requiring hospital admission; all serious adverse events were unrelated to the intervention. Most people who stopped smoking from both groups relapsed after their baby was born. CONCLUSIONS The offer of up to £400 of financial voucher incentives to stop smoking during pregnancy as an addition to current UK stop smoking services is highly effective. This bolt-on intervention supports new guidance from the UK National Institute for Health and Care Excellence, which includes the addition of financial incentives to support pregnant women to stop smoking. Continuing incentives to 12 months after birth is being examined to prevent relapse. TRIAL REGISTRATION ISRCTN Registry ISRCTN15236311.
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Affiliation(s)
- David Tappin
- Child Health, School of Medicine, Honorary Senior Research Fellow, University of Glasgow, UK
| | | | - Frank Kee
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Margaret McFadden
- National Health Service Lanarkshire Clinical Trials Unit, Airdrie, UK
| | | | | | - Ada Keding
- York Trials Unit, University of York, York, UK
| | | | - Sinead Watson
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Alison Dick
- York Trials Unit, University of York, York, UK
| | | | | | - Jennifer McKell
- Institute for Social Marketing and Health, University of Stirling, Stirling, UK
| | - Pat Hoddinott
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | - Fiona M Harris
- School of Health and Life Sciences, University of the West of Scotland, Paisley, UK
| | - Kathleen A Boyd
- Health Economics and Health Technology Assessment, School of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Nicola McMeekin
- Health Economics and Health Technology Assessment, School of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Michael Ussher
- Institute for Social Marketing and Health, University of Stirling, Stirling, UK
- Population Health Research Institute, St George's, University of London, London, UK
| | - Linda Bauld
- Usher Institute and SPECTRUM Consortium, University of Edinburgh, Edinburgh, UK
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Glennie N, Harris FM, France EF. Perceptions and experiences of control among people living with motor neurone disease: a systematic review and thematic synthesis. Disabil Rehabil 2022:1-13. [PMID: 35915574 DOI: 10.1080/09638288.2022.2104942] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE Current research suggests that feeling a lack of control is common among people living with Motor Neurone Disease (plwMND). This systematic review explores and synthesises evidence about: (1) What factors contribute towards perceptions of control in plwMND (2) How do plwMND attempt to maintain control in their daily lives? METHODS A systematic search from inception to January 2022 for peer-reviewed journal articles in English reporting qualitative and mixed-method primary studies or reviews of plwMND's perceptions or experiences of control was conducted on CINAHL, MEDLINE, PsycINFO, ASSIA, Embase and AMED. Eligible articles underwent quality appraisal, data extraction and a thematic synthesis was carried out. RESULTS Twenty publications, 19 primary studies and one review, from nine countries, reporting the views of 578 participants aged from 20 to 90 years were included. Two key analytical themes were identified (1) diagnosis can lead to a disruption of previously held control beliefs (2) plwMND use a range of control strategies to attempt to retain control in their lives. CONCLUSION This is the first systematic review and qualitative evidence synthesis to reveal the strategies plwMND use to regain control and that control beliefs about health, fate, identity and bodily control are significantly altered by the diagnosis. Implications for rehabilitationOutcome measures for plwMND should consider personal values and preferences as well as objective clinical measurements.plwMND use a range of control strategies which may alter and change over time therefore healthcare professionals may also need to review and adapt treatment decisions over time.The differing viewpoints of healthcare professionals and plwMND should be considered in clinical situations to reduce the potential for conflict.
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Affiliation(s)
- Nicola Glennie
- Postgraduate Researcher, NMHAP Research Unit, Faculty of Health Sciences and Sport, University of Stirling, Stirling, UK
| | - Fiona M Harris
- School of Health and Life Sciences, University of West of Scotland, Paisley, UK
| | - Emma F France
- NMHAP Research Unit, Faculty of Health Sciences and Sport, University of Stirling, Stirling, UK
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Macaulay L, O'Dolan C, Avenell A, Carroll P, Cotton S, Dombrowski S, Elders A, Goulao B, Gray C, Harris FM, Hunt K, Kee F, MacLennan G, McDonald MD, McKinley M, Skinner R, Torrens C, Tod M, Turner K, van der Pol M, Hoddinott P. Effectiveness and cost-effectiveness of text messages with or without endowment incentives for weight management in men with obesity (Game of Stones): study protocol for a randomised controlled trial. Trials 2022; 23:582. [PMID: 35869503 PMCID: PMC9306253 DOI: 10.1186/s13063-022-06504-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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] [Received: 06/16/2022] [Accepted: 07/01/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Obesity increases the risk of type 2 diabetes, heart disease, stroke, mobility problems and some cancers, and its prevalence is rising. Men engage less than women in existing weight loss interventions. Game of Stones builds on a successful feasibility study and aims to find out if automated text messages with or without endowment incentives are effective and cost-effective for weight loss at 12 months compared to a waiting list comparator arm in men with obesity. METHODS A 3-arm, parallel group, assessor-blind superiority randomised controlled trial with process evaluation will recruit 585 adult men with body mass index of 30 kg/m2 or more living in and around three UK centres (Belfast, Bristol, Glasgow), purposively targeting disadvantaged areas. Intervention groups: (i) automated, theory-informed text messages daily for 12 months plus endowment incentives linked to verified weight loss targets at 3, 6 and 12 months; (ii) the same text messages and weight loss assessment protocol; (iii) comparator group: 12 month waiting list, then text messages for 3 months. The primary outcome is percentage weight change at 12 months from baseline. Secondary outcomes at 12 months are as follows: quality of life, wellbeing, mental health, weight stigma, behaviours, satisfaction and confidence. Follow-up includes weight at 24 months. A health economic evaluation will measure cost-effectiveness over the trial and over modelled lifetime: including health service resource-use and quality-adjusted life years. The cost-utility analysis will report incremental cost per quality-adjusted life years gained. Participant and service provider perspectives will be explored via telephone interviews, and exploratory mixed methods process evaluation analyses will focus on mental health, multiple long-term conditions, health inequalities and implementation strategies. DISCUSSION The trial will report whether text messages (with and without cash incentives) can help men to lose weight over 1 year and maintain this for another year compared to a comparator group; the costs and benefits to the health service; and men's experiences of the interventions. Process analyses with public involvement and service commissioner input will ensure that this open-source digital self-care intervention could be sustainable and scalable by a range of NHS or public services. TRIAL REGISTRATION ISRCTN 91974895 . Registered on 14/04/2021.
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Affiliation(s)
- Lisa Macaulay
- NMAHP Research Unit, Stirling University, Pathfoot Building, Stirling, FK9 4LA, UK.
| | - Catriona O'Dolan
- NMAHP Research Unit, Stirling University, Pathfoot Building, Stirling, FK9 4LA, UK
| | - Alison Avenell
- Health Services Research Unit, 3Rd Floor Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Paula Carroll
- Department Sport & Exercise Science, Waterford Institute of Technology, Main Campus Cork RoadCo. Waterford, Waterford City, Ireland
| | - Seonaidh Cotton
- CHaRT, HRSU, 3Rd Floor Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Stephan Dombrowski
- Faculty of Kinesiology, University of New Brunswick, 3 Bailey Drive, P.O. Box 4400, Fredericton, NB, E3B 5A3, Canada
| | - Andrew Elders
- NMAHP Research Unit, Glasgow Caledonian University, Govan Mbeki Building, Cowcaddens Road, G4 0BA, Glasgow, UK
| | - Beatriz Goulao
- CHaRT, HRSU, 3Rd Floor Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Cindy Gray
- School of Social and Political Sciences, University of Glasgow, 25-29 Bute Gardens, Glasgow, G12 8RS, UK
| | - Fiona M Harris
- School of Health & Life Sciences, University of the West of Scotland, High Street, Paisley, Renfrewshire, PA1 2BE, UK
| | - Kate Hunt
- Institute for Social Marketing and Health, Pathfoot Building, University of Stirling, Stirling, FK9 4LA, UK
| | - Frank Kee
- Centre for Public Health, UKCRC Centre of Excellence for Public Health Research (NI), Institute Clinical Sciences A, Grosvenor Road, Belfast, BT12 6BJ, Northern Ireland
| | - Graeme MacLennan
- CHaRT, HRSU, 3Rd Floor Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK
| | | | - Michelle McKinley
- Queen's University Belfast, University Road, Belfast, BT7 1NN, Northern Ireland
| | | | - Claire Torrens
- NMAHP Research Unit, Stirling University, Pathfoot Building, Stirling, FK9 4LA, UK
| | - Martin Tod
- Men's Health Forum, 49-51 East Rd, Hoxton, London, N1 6AH, UK
| | - Katrina Turner
- Bristol Medical School, University of Bristol, Canynge Hall, 39 Whatley Road, Bristol, BS8 2PS, UK
| | - Marjon van der Pol
- Health Economics Research Unit, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - Pat Hoddinott
- NMAHP Research Unit, Stirling University, Pathfoot Building, Stirling, FK9 4LA, UK
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McDonald MD, Dombrowski SU, Skinner R, Calveley E, Carroll P, Elders A, Gray CM, Grindle M, Harris FM, Jones C, Hoddinott P. Recruiting men from across the socioeconomic spectrum via GP registers and community outreach to a weight management feasibility randomised controlled trial. BMC Med Res Methodol 2020; 20:249. [PMID: 33023501 PMCID: PMC7542377 DOI: 10.1186/s12874-020-01136-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Received: 05/21/2020] [Accepted: 09/25/2020] [Indexed: 11/17/2022] Open
Abstract
Background Men, particularly those living in disadvantaged areas, are less likely to participate in weight management programmes than women despite similar levels of excess weight. Little is known about how best to recruit men to weight management interventions. This paper describes patient and public involvement in pre-trial decisions relevant to recruitment and aims to report on recruitment to the subsequent men-only weight management feasibility trial, including the: i) acceptability and feasibility of recruitment; and ii) baseline sample characteristics by recruitment strategy. Methods Men with BMI ≥30 kg/m2 and/or waist circumference ≥ 40 in. were recruited to the feasibility trial via two strategies; community outreach (venue information stands and word of mouth) and GP letters, targeting disadvantaged areas. Recruitment activities (e.g. letters sent, researcher venue hours) were recorded systematically, and baseline characteristics questionnaire data collated. Qualitative interviews (n = 50) were conducted three months post-recruitment. Analyses and reporting followed a complementary mixed methods approach. Results 105 men were recruited within four months (community n = 60, GP letter n = 45). Community outreach took 2.3 recruiter hours per participant and GP letters had an opt-in rate of 10.2% (n = 90/879). More men were interested than could be accommodated. Most participants (60%) lived in more disadvantaged areas. Compared to community outreach, men recruited via GP letters were older (mean = 57 vs 48 years); more likely to report an obesity-related co-morbidity (87% vs 44%); and less educated (no formal qualifications, 32% vs 10%, degree educated 11% vs 41%). Recruitment strategies were acceptable, a sensitive approach and trusting relationships with recruiters valued, and the ‘catchy’ study name drew attention. Conclusions Targeted community outreach and GP letters were acceptable strategies that successfully recruited participants to a men-only weight management feasibility trial. Both strategies engaged men from disadvantaged areas, a typically underserved population. Using two recruitment strategies produced samples with different health risk profiles, which could add value to research where either primary or secondary prevention is of interest. Further work is required to examine how these strategies could be implemented and sustained in practice. Trial registration ClinicalTrials.gov: NCT03040518, 2nd February 2017.
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Affiliation(s)
- Matthew D McDonald
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK. .,Physical Activity and Wellbeing Research Group, Curtin University, Perth, Australia. .,School of Psychology, Curtin University, Perth, Australia.
| | - Stephan U Dombrowski
- Faculty of Kinesiology, University of New Brunswick, Fredericton, New Brunswick, Canada.,Division of Psychology, University of Stirling, Stirling, UK
| | - Rebecca Skinner
- Division of Psychology, University of Stirling, Stirling, UK
| | - Eileen Calveley
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | | | - Andrew Elders
- Nursing, Midwifery and Allied Health Professions Research Unit, Glasgow Caledonian University, Glasgow, UK
| | - Cindy M Gray
- School of Social and Political Sciences, Institute of Health & Wellbeing, University of Glasgow, Glasgow, UK
| | - Mark Grindle
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, UK
| | - Fiona M Harris
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | - Claire Jones
- Health Informatics Centre, University of Dundee, Dundee, UK
| | - Pat Hoddinott
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
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Dombrowski SU, McDonald M, van der Pol M, Grindle M, Avenell A, Carroll P, Calveley E, Elders A, Glennie N, Gray CM, Harris FM, Hapca A, Jones C, Kee F, McKinley MC, Skinner R, Tod M, Hoddinott P. Text messaging and financial incentives to encourage weight loss in men with obesity: the Game of Stones feasibility RCT. Public Health Res 2020. [DOI: 10.3310/phr08110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background
In 2016, 26% of UK men were estimated to be obese. Systematic reviews suggest that few men engage in formal weight loss interventions that support weight reduction and improve health.
Objective
To co-produce, with patient and public involvement, an acceptable and feasible randomised controlled trial design to test a men-only weight management intervention.
Design
This was a two-phase feasibility study. Phase 1 was the development of intervention components, study procedures and materials including a discrete choice experiment with survey questions. Phase 2 was an individually randomised three-arm feasibility trial over 12 months. Qualitative interviews were conducted at 3 and 12 months.
Setting
The setting was two sites in Scotland that had disadvantaged urban and rural areas and differed in employment levels and ethnic groups.
Participants
In phase 1, 1045 men with obesity were recruited by Ipsos MORI (London, UK; www.ipsos.com/ipsos-mori/en-uk) to represent the UK population. In phase 2, 105 men with obesity were recruited in the community or through general practice obesity registers. Qualitative interviews were conducted with 50 men at 3 months and with 33 men at 12 months.
Interventions
The trial arms were narrative short message service (SMS) for 12 months (SMS only), financial endowment incentive informed by loss aversion and linked to achievement of weight loss targets plus narrative SMS for 12 months (SMS + I), and waiting list control group for 12 months followed by 3 months of an alternative SMS style developed based on feedback from men who had received the narrative SMS (control).
Main outcome measures
The main outcome measures were acceptability and feasibility of recruitment, retention, engagement, intervention components and trial procedures. Outcomes were assessed by examining procedural, quantitative and qualitative data at 3, 6 and 12 months.
Results
The most acceptable incentive strategy, based on the discrete choice experiment results, was to verify weight loss of 5% at 3 months, verify weight loss of 10% at 6 months and maintain weight loss of 10% at 12 months. Overall, 105 men with obesity from across the socioeconomic spectrum were successfully recruited to target, 59% of whom lived in more disadvantaged areas. Retention at 12 months was acceptable (74%) and was higher among individuals from disadvantaged areas. Narrative SMS were acceptable to many men, with a minority reporting negative reactions. Incentives were acceptable but were not the primary motivation for behaviour change. Twelve men in the incentive arm (33%) secured at least some money and three (8%) secured the full amount. Both intervention arms lost some weight, with greater weight loss in the arm that received SMS and incentives. The alternative SMS based on men’s feedback received no strong negative reactions.
Limitations
Fewer participants from the SMS + I arm (64%) completed the study at 12 months than did those in the SMS-only (79%) and control (83%) arms. The reasons for this difference were complex.
Conclusions
The men-only weight management intervention consisting of narrative SMS and financial incentives was acceptable and feasible, meeting the progression criteria for a full trial. Tailoring of SMS may improve acceptability and retention.
Future work
Minor refinements to the intervention components based on the study findings will be made prior to testing in a multisite definitive randomised controlled trial.
Trial registration
ClinicalTrials.gov NCT03040518.
Funding
This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 8, No. 11. See the NIHR Journals Library website for further project information.
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Affiliation(s)
- Stephan U Dombrowski
- Faculty of Kinesiology, University of New Brunswick, Fredericton, NB, Canada
- Division of Psychology, Faculty of Natural Sciences, University of Stirling, Stirling, UK
| | - Matthew McDonald
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | | | - Mark Grindle
- Division of Rural Health and Wellbeing, University of the Highlands and Islands, Inverness, UK
| | - Alison Avenell
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | | | - Eileen Calveley
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | - Andrew Elders
- Nursing, Midwifery and Allied Health Professions Research Unit, Glasgow Caledonian University, Glasgow, UK
| | - Nicola Glennie
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | - Cindy M Gray
- Institute of Health & Wellbeing, College of Social Sciences, University of Glasgow, Glasgow, UK
| | - Fiona M Harris
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
| | - Adrian Hapca
- Tayside Clinical Trials Unit, University of Dundee, Dundee, UK
| | - Claire Jones
- Health Informatics Centre, University of Dundee, Dundee, UK
| | - Frank Kee
- Centre for Public Health, Institute of Clinical Sciences, Queen’s University Belfast, Belfast, UK
| | | | - Rebecca Skinner
- Division of Psychology, Faculty of Natural Sciences, University of Stirling, Stirling, UK
| | | | - Pat Hoddinott
- Nursing, Midwifery and Allied Health Professions Research Unit, University of Stirling, Stirling, UK
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Coles E, Anderson J, Maxwell M, Harris FM, Gray NM, Milner G, MacGillivray S. The influence of contextual factors on healthcare quality improvement initiatives: a realist review. Syst Rev 2020; 9:94. [PMID: 32336290 PMCID: PMC7184709 DOI: 10.1186/s13643-020-01344-3] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [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] [Received: 11/05/2019] [Accepted: 03/30/2020] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Recognising the influence of context and the context-sensitive nature of quality improvement (QI) interventions is crucial to implementing effective improvements and successfully replicating them in new settings, yet context is still poorly understood. To address this challenge, it is necessary to capture generalisable knowledge, first to understand which aspects of context are most important to QI and why, and secondly, to explore how these factors can be managed to support healthcare improvement, in terms of implementing successful improvement initiatives, achieving sustainability and scaling interventions. The research question was how and why does context influence quality improvement initiatives in healthcare? METHODS A realist review explored the contextual conditions that influence healthcare improvement. Realist methodology integrates theoretical understanding and stakeholder input with empirical research findings. The review aimed to identify and understand the role of context during the improvement cycle, i.e. planning, implementation, sustainability and transferability; and distil new knowledge to inform the design and development of context-sensitive QI initiatives. We developed a preliminary theory of the influence of context to arrive at a conceptual and theoretical framework. RESULTS Thirty-five studies were included in the review, demonstrating the interaction of key contextual factors across healthcare system levels during the improvement cycle. An evidence-based explanatory theoretical model is proposed to illustrate the interaction between contextual factors, system levels (macro, meso, micro) and the stages of the improvement journey. Findings indicate that the consideration of these contextual factors would enhance the design and delivery of improvement initiatives, across a range of improvement settings. CONCLUSIONS This is the first realist review of context in QI and contributes to a deeper understanding of how context influences quality improvement initiatives. The distillation of key contextual factors offers the potential to inform the design and development of context-sensitive interventions to enhance improvement initiatives and address the challenge of spread and sustainability. Future research should explore the application of our conceptual model to enhance improvement-planning processes. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42017062135.
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Affiliation(s)
- Emma Coles
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Julie Anderson
- Scottish Improvement Science Collaborating Centre (SISCC), School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
| | - Margaret Maxwell
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Fiona M. Harris
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Nicola M. Gray
- Scottish Improvement Science Collaborating Centre (SISCC), School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
| | - Gill Milner
- Scottish Improvement Science Collaborating Centre (SISCC), School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
| | - Stephen MacGillivray
- School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
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Dombrowski SU, McDonald M, van der Pol M, Grindle M, Avenell A, Carroll P, Calveley E, Elders A, Glennie N, Gray CM, Harris FM, Hapca A, Jones C, Kee F, McKinley MC, Skinner R, Tod M, Hoddinott P. Game of Stones: feasibility randomised controlled trial of how to engage men with obesity in text message and incentive interventions for weight loss. BMJ Open 2020; 10:e032653. [PMID: 32102807 PMCID: PMC7045214 DOI: 10.1136/bmjopen-2019-032653] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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] [Received: 07/02/2019] [Revised: 12/06/2019] [Accepted: 01/08/2020] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES To examine the acceptability and feasibility of narrative text messages with or without financial incentives to support weight loss for men. DESIGN Individually randomised three-arm feasibility trial with 12 months' follow-up. SETTING Two sites in Scotland with high levels of disadvantage according to Scottish Index for Multiple Deprivation (SIMD). PARTICIPANTS Men with obesity (n=105) recruited through community outreach and general practitioner registers. INTERVENTIONS Participants randomised to: (A) narrative text messages plus financial incentive for 12 months (short message service (SMS)+I), (B) narrative text messages for 12 months (SMS only), or (C) waiting list control. OUTCOMES Acceptability and feasibility of recruitment, retention, intervention components and trial procedures assessed by analysing quantitative and qualitative data at 3, 6 and 12 months. RESULTS 105 men were recruited, 60% from more disadvantaged areas (SIMD quintiles 1 or 2). Retention at 12 months was 74%. Fewer SMS+I participants (64%) completed 12-month assessments compared with SMS only (79%) and control (83%). Narrative texts were acceptable to many men, but some reported negative reactions. No evidence emerged that level of disadvantage was related to acceptability of narrative texts. Eleven SMS+I participants (31%) successfully met or partially met weight loss targets. The cost of the incentive per participant was £81.94 (95% CI £34.59 to £129.30). Incentives were acceptable, but improving health was reported as the key motivator for weight loss. All groups lost weight (SMS+I: -2.51 kg (SD=4.94); SMS only: -1.29 kg (SD=5.03); control: -0.86 kg (SD=5.64) at 12 months). CONCLUSIONS This three-arm weight management feasibility trial recruited and retained men from across the socioeconomic spectrum, with the majority from areas of disadvantage, was broadly acceptable to most participants and feasible to deliver. TRIAL REGISTRATION NUMBER NCT03040518.
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Affiliation(s)
- Stephan U Dombrowski
- Department of Kinesiology, University of New Brunswick Fredericton, Fredericton, New Brunswick, Canada
- Division of Psychology, University of Stirling, Stirling, UK
| | - Matthew McDonald
- Nursing, Midwifery and Allied Health Professional Research Unit, University of Stirling, Stirling, UK
| | | | - Mark Grindle
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, Highland, UK
| | - Alison Avenell
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | | | - Eileen Calveley
- Nursing, Midwifery and Allied Health Professional Research Unit, University of Stirling, Stirling, UK
| | - Andrew Elders
- Nursing, Midwifery and Allied Health Professions Research Unit, Glasgow Caledonian University, Glasgow, UK
| | - Nicola Glennie
- Nursing, Midwifery and Allied Health Professional Research Unit, University of Stirling, Stirling, UK
| | - Cindy M Gray
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Fiona M Harris
- Nursing, Midwifery and Allied Health Professional Research Unit, University of Stirling, Stirling, UK
| | - Adrian Hapca
- Tayside Clinical Trials Unit, University of Dundee, Dundee, UK
| | - Claire Jones
- Health Informatics Centre, University of Dundee, Dundee, UK
| | - Frank Kee
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | | | - Rebecca Skinner
- Division of Psychology, University of Stirling, Stirling, UK
| | | | - Pat Hoddinott
- Nursing, Midwifery and Allied Health Professional Research Unit, University of Stirling, Stirling, UK
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10
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Sinclair L, McFadden M, Tilbrook H, Mitchell A, Keding A, Watson J, Bauld L, Kee F, Torgerson D, Hewitt C, McKell J, Hoddinott P, Harris FM, Uny I, Boyd K, McMeekin N, Ussher M, Tappin DM. The smoking cessation in pregnancy incentives trial (CPIT): study protocol for a phase III randomised controlled trial. Trials 2020; 21:183. [PMID: 32059684 PMCID: PMC7023794 DOI: 10.1186/s13063-019-4042-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 09/30/2019] [Accepted: 12/30/2019] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Eighty per cent of UK women have at least one baby, making pregnancy an opportunity to help women stop smoking before their health is irreparably compromised. Smoking cessation during pregnancy helps protect infants from miscarriage, still birth, low birth weight, asthma, attention deficit disorder and adult cardiovascular disease. UK national guidelines highlight lack of evidence for effectiveness of financial incentives to help pregnant smokers quit. This includes a research recommendation: within a UK context, are incentives an acceptable, effective and cost-effective way to help pregnant women who smoke to quit? METHODS The Cessation in Pregnancy Incentives Trial (CPIT) III is a pragmatic, 42-month, multi-centre, parallel-group, individually randomised controlled superiority trial of the effect on smoking status of adding to usual Stop Smoking Services (SSS) support, the offer of up to £400 of financial voucher incentives, compared with usual support alone, to quit smoking during pregnancy. Participants (n = 940) are pregnant smokers (age > 16 years, < 24 weeks pregnant, English speaking), who consent via telephone to take part and are willing to be followed-up in late pregnancy and 6 months after birth. The primary outcome is cotinine/anabasine-validated abstinence from smoking in late pregnancy. Secondary outcomes include engagement with SSS, quit rates at 4 weeks from agreed quit date and 6 months after birth, and birth weight. Outcomes will be analysed by intention to treat, and regression models will be used to compare treatment effects on outcomes. A meta-analysis will include data from the feasibility study in Glasgow. An economic evaluation will assess cost-effectiveness from a UK NHS perspective. Process evaluation using a case-study approach will identify opportunities to improve recruitment and learning for future implementation. Research questions include: what is the therapeutic efficacy of incentives; are incentives cost-effective; and what are the potential facilitators and barriers to implementing incentives in different parts of the UK? DISCUSSION This phase III trial in Scotland, England and Northern Ireland follows a successful phase II trial in Glasgow, UK. The participating sites have diverse SSS that represent most cessation services in the UK and serve demographically varied populations. If found to be acceptable and cost-effective, this trial could demonstrate that financial incentives are effective and transferable to most UK SSS for pregnant women. TRIAL REGISTRATION Current Controlled Trials, ISRCTN15236311. Registered on 9 October 2017.
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Affiliation(s)
- Lesley Sinclair
- Usher Institute, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG UK
| | - Margaret McFadden
- Clinical R&D, Dykebar Hospital, Grahamstone Road, Paisley, PA2 7DE UK
| | - Helen Tilbrook
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
| | - Alex Mitchell
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
| | - Ada Keding
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
| | - Judith Watson
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
| | - Linda Bauld
- Usher Institute, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG UK
| | - Frank Kee
- Centre of Excellence for Public Health, Queen’s University Belfast, University Road, Belfast, BT7 1NN UK
| | - David Torgerson
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
| | - Catherine Hewitt
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
| | - Jennifer McKell
- Institute for Social Marketing, University of Stirling, Stirling, FK9 4LA UK
| | - Pat Hoddinott
- NMAHP Research Unit, University of Stirling, Stirling, FK9 4LA UK
| | - Fiona M. Harris
- NMAHP Research Unit, University of Stirling, Stirling, FK9 4LA UK
| | - Isabelle Uny
- Institute for Social Marketing, University of Stirling, Stirling, FK9 4LA UK
| | - Kathleen Boyd
- Health Economics & Health Technology Assessment, Institute of Health & Wellbeing, 1 Lilybank Gardens, University of Glasgow, Glasgow, G12 8RZ UK
| | - Nicola McMeekin
- Health Economics & Health Technology Assessment, Institute of Health & Wellbeing, 1 Lilybank Gardens, University of Glasgow, Glasgow, G12 8RZ UK
| | - Michael Ussher
- Institute for Social Marketing, University of Stirling, Stirling, FK9 4LA UK
- Population Health Research Institute, St George’s, University of London, Cranmer Terrace, London, SW17 0RE UK
| | - David M. Tappin
- Scottish Cot Death Trust, West Glasgow Ambulatory Care Hospital, Glasgow University, 5th Floor, Glasgow, G3 8SJ UK
| | - for the CPIT III local research teams
- Usher Institute, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG UK
- Clinical R&D, Dykebar Hospital, Grahamstone Road, Paisley, PA2 7DE UK
- York Trials Unit, Department of Health Sciences, Faculty of Science, University of York, Alcuin Research Resource Centre, Heslington, York, YO10 5DD UK
- Centre of Excellence for Public Health, Queen’s University Belfast, University Road, Belfast, BT7 1NN UK
- Institute for Social Marketing, University of Stirling, Stirling, FK9 4LA UK
- NMAHP Research Unit, University of Stirling, Stirling, FK9 4LA UK
- Health Economics & Health Technology Assessment, Institute of Health & Wellbeing, 1 Lilybank Gardens, University of Glasgow, Glasgow, G12 8RZ UK
- Population Health Research Institute, St George’s, University of London, Cranmer Terrace, London, SW17 0RE UK
- Scottish Cot Death Trust, West Glasgow Ambulatory Care Hospital, Glasgow University, 5th Floor, Glasgow, G3 8SJ UK
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11
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McGregor J, Mercer SW, Harris FM. Health benefits of primary care social work for adults with complex health and social needs: a systematic review. Health Soc Care Community 2018; 26:1-13. [PMID: 27059167 DOI: 10.1111/hsc.12337] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/28/2016] [Indexed: 05/23/2023]
Abstract
The prevalence of complex health and social needs in primary care patients is growing. Furthermore, recent research suggests that the impact of psychosocial distress on the significantly poorer health outcomes in this population may have been underestimated. The potential of social work in primary care settings has been extensively discussed in both health and social work literature and there is evidence that social work interventions in other settings are particularly effective in addressing psychosocial needs. However, the evidence base for specific improved health outcomes related to primary care social work is minimal. This review aimed to identify and synthesise the available evidence on the health benefits of social work interventions in primary care settings. Nine electronic databases were searched from 1990 to 2015 and seven primary research studies were retrieved. Due to the heterogeneity of studies, a narrative synthesis was conducted. Although there is no definitive evidence for effectiveness, results suggest a promising role for primary care social work interventions in improving health outcomes. These include subjective health measures and self-management of long-term conditions, reducing psychosocial morbidity and barriers to treatment and health maintenance. Although few rigorous study designs were found, the contextual detail and clinical settings of studies provide evidence of the practice applicability of social work intervention. Emerging policy on the integration of health and social care may provide an opportunity to develop this model of care.
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Affiliation(s)
- Jules McGregor
- Health and Social Care Department, City of Edinburgh Council, Edinburgh, UK
| | - Stewart W Mercer
- Department of Primary Care Research, University of Glasgow, Glasgow, UK
| | - Fiona M Harris
- NMAHP Research Unit, University of Stirling, Stirling, UK
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12
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Coles E, Wells M, Maxwell M, Harris FM, Anderson J, Gray NM, Milner G, MacGillivray S. The influence of contextual factors on healthcare quality improvement initiatives: what works, for whom and in what setting? Protocol for a realist review. Syst Rev 2017; 6:168. [PMID: 28830572 PMCID: PMC5568400 DOI: 10.1186/s13643-017-0566-8] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [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] [Received: 07/18/2017] [Accepted: 08/15/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Context shapes the effectiveness of knowledge implementation and influences health improvement. Successful healthcare quality improvement (QI) initiatives frequently fail to transfer to different settings, with local contextual factors often cited as the cause. Understanding and overcoming contextual barriers is therefore crucial to implementing effective improvement; yet context is still poorly understood. There is a paucity of information on the mechanisms underlying how and why QI projects succeed or fail in given settings. A realist review of empirical studies of healthcare QI initiatives will be undertaken to examine the influence and impact of contextual factors on quality improvement in healthcare settings and explore whether QI initiatives can work in all contexts. METHODS The review will explore which contextual factors are important, and how, why, when and for whom they are important, within varied settings. The dynamic nature of context and change over time will be explored by examining which aspects of context impact at key points in the improvement trajectory. The review will also consider the influence of context on improvement outcomes (provider- and patient-level), spread and sustainability. The review process will follow five iterative steps: (1) clarify scope, (2) search for evidence, (3) appraise primary studies and extract data, (4) synthesise evidence and draw conclusions and (5) disseminate findings. The reviewers will consult with experts and stakeholders in the early stages to focus the review and develop a programme theory consisting of explanatory 'context-mechanism-outcome' configurations. Searches for primary evidence will be conducted iteratively. Data will be extracted and tested against the programme theory. A review advisory group will oversee the review process. Review findings will follow RAMESES guidelines and will be disseminated via a report, presentations and peer-reviewed publications. DISCUSSION The review will update and consolidate evidence on the contextual conditions for effective improvement and distil new knowledge to inform the design and development of context-sensitive QI initiatives. This review ties in with the study of improvement programmes as vehicles of change and the development of an evidence base around healthcare improvement by addressing whether QI initiatives can work in all contexts. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42017062135.
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Affiliation(s)
- Emma Coles
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Mary Wells
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Margaret Maxwell
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Fiona M. Harris
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Julie Anderson
- Scottish Improvement Science Collaborating Centre (SISCC), School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
| | - Nicola M. Gray
- Scottish Improvement Science Collaborating Centre (SISCC), School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
| | - Gill Milner
- Scottish Improvement Science Collaborating Centre (SISCC), School of Nursing and Health Sciences, University of Dundee, 11 Airlie Place, Dundee, DD1 4HJ UK
| | - Stephen MacGillivray
- Nursing Midwifery & Allied Health Professions Research Unit (NMAHP-RU), University of Stirling, Scion House, University of Stirling Innovation Park, Stirling, FK9 4NF UK
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13
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Cameron D, Harris FM, Evans JMM. Patterns of self-monitoring of blood glucose in insulin-treated diabetes: analysis of a Scottish population over time. Diabetes Obes Metab 2016; 18:729-31. [PMID: 26990502 DOI: 10.1111/dom.12662] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 02/25/2016] [Accepted: 03/10/2016] [Indexed: 11/26/2022]
Abstract
Analysis of a diabetes clinical information system in Tayside, Scotland, shows that a significant proportion of insulin-treated patients with diabetes are not self-monitoring blood glucose according to current clinical guidance and recommendations, with some not self-monitoring their blood glucose at all. Although there has been an increase in the number of reagent strips dispensed over the past decade, this increase is mainly accounted for by increased testing frequency among people with diabetes already testing.
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Affiliation(s)
- D Cameron
- School of Health Sciences, University of Stirling, Stirling, UK
| | - F M Harris
- Nursing, Midwifery and Allied Health Professionals Research Unit, University of Stirling, Stirling, UK
| | - J M M Evans
- School of Health Sciences, University of Stirling, Stirling, UK
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14
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Affiliation(s)
- Fiona M Harris
- NMAHP (Nurses, Midwives and Allied Health Professionals) Research Unit, School of Health Sciences, University of Stirling, Stirling FK9 4NF, UK
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15
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Harris FM, Maxwell M, O’Connor R, Coyne JC, Arensman E, Coffey C, Koburger N, Gusmão R, Costa S, Székely A, Cserhati Z, McDaid D, van Audenhove C, Hegerl U. Exploring synergistic interactions and catalysts in complex interventions: longitudinal, mixed methods case studies of an optimised multi-level suicide prevention intervention in four european countries (Ospi-Europe). BMC Public Health 2016; 16:268. [PMID: 26979461 PMCID: PMC4791791 DOI: 10.1186/s12889-016-2942-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/08/2016] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND The Medical Research Council (MRC) Framework for complex interventions highlights the need to explore interactions between components of complex interventions, but this has not yet been fully explored within complex, non-pharmacological interventions. This paper draws on the process evaluation data of a suicide prevention programme implemented in four European countries to illustrate the synergistic interactions between intervention levels in a complex programme, and to present our method for exploring these. METHODS A realist evaluation approach informed the process evaluation, which drew on mixed methods, longitudinal case studies. Data collection consisted of 47 semi-structured interviews, 12 focus groups, one workshop, fieldnoted observations of six programme meetings and 20 questionnaires (delivered at six month intervals to each of the four intervention sites). Analysis drew on the framework approach, facilitated by the use of QSR NVivo (v10). Our qualitative approach to exploring synergistic interactions (QuaSIC) also developed a matrix of hypothesised synergies that were explored within one workshop and two waves of data collection. RESULTS All four implementation countries provided examples of synergistic interactions that added value beyond the sum of individual intervention levels or components in isolation. For instance, the launch ceremony of the public health campaign (a level 3 intervention) in Ireland had an impact on the community-based professional training, increasing uptake and visibility of training for journalists in particular. In turn, this led to increased media reporting of OSPI activities (monitored as part of the public health campaign) and also led to wider dissemination of editorial guidelines for responsible reporting of suicidal acts. Analysis of the total process evaluation dataset also revealed the new phenomenon of the OSPI programme acting as a catalyst for externally generated (and funded) activity that shared the goals of suicide prevention. CONCLUSIONS The QuaSIC approach enabled us to develop and refine our definition of synergistic interactions and add the innovative concept of catalytic effects. This represents a novel approach to the evaluation of complex interventions. By exploring synergies and catalytic interactions related to a complex intervention or programme, we reveal the added value to planned activities and how they might be maximised.
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Affiliation(s)
- Fiona M. Harris
- />Nursing, Midwifery & Allied Health Professions Research Unit, University of Stirling, Unit 13, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Margaret Maxwell
- />Nursing, Midwifery & Allied Health Professions Research Unit, University of Stirling, Unit 13, University of Stirling Innovation Park, Stirling, FK9 4NF UK
| | - Rory O’Connor
- />Institute of Health & Well-being, University of Glasgow, Glasgow, UK
| | - James C. Coyne
- />Faculty of Medical Sciences, University of Groningen, Groningen, The Netherlands
| | - Ella Arensman
- />National Suicide Research Foundation, University College Cork, Cork, Ireland
| | - Claire Coffey
- />National Suicide Research Foundation, University College Cork, Cork, Ireland
| | - Nicole Koburger
- />Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
| | - Ricardo Gusmão
- />CEDOC, Faculdade e Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Susana Costa
- />CEDOC, Faculdade e Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
| | - András Székely
- />Institute of Behavioural Sciences, Semmelweis University Budapest, Budapest, Hungary
| | - Zoltan Cserhati
- />Institute of Behavioural Sciences, Semmelweis University Budapest, Budapest, Hungary
| | - David McDaid
- />Personal Social Services Research Unit, London School of Economics and Political Science, London, UK
| | | | - Ulrich Hegerl
- />Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
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16
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Huby G, Harris FM, Powell AE, Kielman T, Sheikh A, Williams S, Pinnock H. Beyond professional boundaries: relationships and resources in health services' modernisation in England and Wales. Sociol Health Illn 2014; 36:400-415. [PMID: 24266800 DOI: 10.1111/1467-9566.12067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This article draws on theories of social capital to understand ways in which the negotiation of professional boundaries among healthcare professionals relates to health services change. We compared reconfiguration of respiratory services in four primary care organisations (PCOs) in England and Wales. Service development was observed over 18 months during a period of market-based reforms. Serial interviews with key clinicians and managers from hospital trusts and PCOs followed progress as they collaborated around, negotiated and contested developments. We found that professionals work to protect and expand their claims to work territory. Remuneration and influence was a catalyst for development and was also necessary to establish professional boundaries that underpinned novel service arrangements. Conflict and contest was less of a threat to change than a lack of engagement in boundary work because this engagement produced relationships based on forming shifting professional allegiances across and along boundaries, and these relationships mediated the social capital needed to accomplish change. However, this process also (re)produced inequalities among professions and prevented some groups from participation in service change.
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Affiliation(s)
- Guro Huby
- School of Health in Social Science, University of Edinburgh and Faculty of Health and Social Studies, University College Østfold, Norway
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17
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Harris FM, Maxwell M, O’Connor RC, Coyne J, Arensman E, Székely A, Gusmão R, Coffey C, Costa S, Cserháti Z, Koburger N, van Audenhove C, McDaid D, Maloney J, Värnik P, Hegerl U. Developing social capital in implementing a complex intervention: a process evaluation of the early implementation of a suicide prevention intervention in four European countries. BMC Public Health 2013; 13:158. [PMID: 23425005 PMCID: PMC3599799 DOI: 10.1186/1471-2458-13-158] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [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: 10/02/2012] [Accepted: 02/18/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Variation in the implementation of complex multilevel interventions can impact on their delivery and outcomes. Few suicide prevention interventions, especially multilevel interventions, have included evaluation of both the process of implementation as well as outcomes. Such evaluation is essential for the replication of interventions, for interpreting and understanding outcomes, and for improving implementation science. This paper reports on a process evaluation of the early implementation stage of an optimised suicide prevention programme (OSPI-Europe) implemented in four European countries. METHODS The process analysis was conducted within the framework of a realist evaluation methodology, and involved case studies of the process of implementation in four European countries. Datasets include: repeated questionnaires to track progress of implementation including delivery of individual activities and their intensity; serial interviews and focus groups with stakeholder groups; and detailed observations at OSPI implementation team meetings. RESULTS Analysis of local contexts in each of the four countries revealed that the advisory group was a key mechanism that had a substantial impact on the ease of implementation of OSPI interventions, particularly on their ability to recruit to training interventions. However, simply recruiting representatives of key organisations into an advisory group is not sufficient to achieve impact on the delivery of interventions. In order to maximise the potential of high level 'gatekeepers', it is necessary to first transform them into OSPI stakeholders. Motivations for OSPI participation as a stakeholder included: personal affinity with the shared goals and target groups within OSPI; the complementary and participatory nature of OSPI that adds value to pre-existing suicide prevention initiatives; and reciprocal reward for participants through access to the extended network capacity that organisations could accrue for themselves and their organisations from participation in OSPI. CONCLUSIONS Exploring the role of advisory groups and the meaning of participation for these participants revealed some key areas for best practice in implementation: careful planning of the composition of the advisory group to access target groups; the importance of establishing common goals; the importance of acknowledging and complementing existing experience and activity; and facilitating an equivalence of benefit from network participation.
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Affiliation(s)
- Fiona M Harris
- Nursing, Midwifery and Allied Health Professions Research Unit, Iris Murdoch Building, University of Stirling, FK9 4LA, Stirling, UK
| | - Margaret Maxwell
- Nursing, Midwifery and Allied Health Professions Research Unit, Iris Murdoch Building, University of Stirling, FK9 4LA, Stirling, UK
| | - Rory C O’Connor
- Suicidal Behaviour Research Laboratory, School of Natural Sciences, University of Stirling, FK9 4LA, Stirling, UK
| | - James Coyne
- Department of Psychiatry, University of Pennsylvania School of Medicine, 3535 Market Street, 6th Floor, 19104, Philadelphia, PA, USA
| | - Ella Arensman
- National Suicide Research Foundation, 1 Perrott Avenue, College Road, Cork, Ireland
| | - András Székely
- Institute of Behavioural Sciences, Semmelweis University Budapest, Nagyvárad tér 4, 1089, Budapest, Hungary
| | - Ricardo Gusmão
- CEDOC, Departamento de Saúde Mental, Faculdade de Ciências Médicas da Universidade Nova de Lisboa, 1169-056, Lisbon, Portugal
| | - Claire Coffey
- National Suicide Research Foundation, 1 Perrott Avenue, College Road, Cork, Ireland
| | - Susana Costa
- CEDOC, Departamento de Saúde Mental, Faculdade de Ciências Médicas da Universidade Nova de Lisboa, 1169-056, Lisbon, Portugal
| | - Zoltan Cserháti
- Institute of Behavioural Sciences, Semmelweis University Budapest, Nagyvárad tér 4, 1089, Budapest, Hungary
| | - Nicole Koburger
- Klinik und Poliklinik für Psychiatrie und Psychotherapie, Universitätsklinikum Leipzig AöR, Semmelweisstraße 10, 04103, Leipzig, Germany
| | - Chantal van Audenhove
- LUCAS, Katholieke Universiteit Leuven, Kapucijnenvoer 39 - bus 5310, 3000, Leuven, Belgium
| | - David McDaid
- Personal Social Services Research Unit, London School of Economics and Political Science, Houghton Street, WC2A 2AE, London, UK
| | - Julia Maloney
- Klinik und Poliklinik für Psychiatrie, Psychosomatik und Psychotherapie der Universität Würzburg, Füchsleinstraße 15, 97080, Würzburg, Germany
| | - Peeter Värnik
- Estonian-Swedish Mental Health and Suicidology Institute, Õie 39, 11615, Tallinn, Estonia
| | - Ulrich Hegerl
- Klinik und Poliklinik für Psychiatrie und Psychotherapie, Universitätsklinikum Leipzig AöR, Semmelweisstraße 10, 04103, Leipzig, Germany
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Jepson RG, Harris FM, Platt S, Tannahill C. The effectiveness of interventions to change six health behaviours: a review of reviews. BMC Public Health 2010; 10:538. [PMID: 20825660 PMCID: PMC2944371 DOI: 10.1186/1471-2458-10-538] [Citation(s) in RCA: 212] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Accepted: 09/08/2010] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Several World Health Organisation reports over recent years have highlighted the high incidence of chronic diseases such as diabetes, coronary heart disease and cancer. Contributory factors include unhealthy diets, alcohol and tobacco use and sedentary lifestyles. This paper reports the findings of a review of reviews of behavioural change interventions to reduce unhealthy behaviours or promote healthy behaviours. We included six different health-related behaviours in the review: healthy eating, physical exercise, smoking, alcohol misuse, sexual risk taking (in young people) and illicit drug use. We excluded reviews which focussed on pharmacological treatments or those which required intensive treatments (e.g. for drug or alcohol dependency). METHODS The Cochrane Library, Database of Abstracts of Reviews of Effectiveness (DARE) and several Ovid databases were searched for systematic reviews of interventions for the six behaviours (updated search 2008). Two reviewers applied the inclusion criteria, extracted data and assessed the quality of the reviews. The results were discussed in a narrative synthesis. RESULTS We included 103 reviews published between 1995 and 2008. The focus of interventions varied, but those targeting specific individuals were generally designed to change an existing behaviour (e.g. cigarette smoking, alcohol misuse), whilst those aimed at the general population or groups such as school children were designed to promote positive behaviours (e.g. healthy eating). Almost 50% (n = 48) of the reviews focussed on smoking (either prevention or cessation). Interventions that were most effective across a range of health behaviours included physician advice or individual counselling, and workplace- and school-based activities. Mass media campaigns and legislative interventions also showed small to moderate effects in changing health behaviours.Generally, the evidence related to short-term effects rather than sustained/longer-term impact and there was a relative lack of evidence on how best to address inequalities. CONCLUSIONS Despite limitations of the review of reviews approach, it is encouraging that there are interventions that are effective in achieving behavioural change. Further emphasis in both primary studies and secondary analysis (e.g. systematic reviews) should be placed on assessing the differential effectiveness of interventions across different population subgroups to ensure that health inequalities are addressed.
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Affiliation(s)
- Ruth G Jepson
- Department of Nursing and Midwifery, University of Stirling, Stirling, FK9 4LA, UK
| | - Fiona M Harris
- Nursing Midwifery & Allied Health ProfessionsResearch Unit, University of Stirling, Stirling, UK
| | - Stephen Platt
- Centre for Population Health Sciences, University of Edinburgh, Edinburgh, EH8 9AG, UK
| | - Carol Tannahill
- Glasgow Centre for Population Health, 94 Elmbank Street, Glasgow, G2 4DL, UK
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Murray SA, Kendall M, Carduff E, Worth A, Harris FM, Lloyd A, Cavers D, Grant L, Sheikh A. Use of serial qualitative interviews to understand patients' evolving experiences and needs. BMJ 2009; 339:b3702. [PMID: 19786485 DOI: 10.1136/bmj.b3702] [Citation(s) in RCA: 187] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Scott A Murray
- Primary Palliative Care Research Group, Centre for Population Health Sciences: General Practice Section, University of Edinburgh, Edinburgh EH8 9DX.
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Harris FM. Cancer the Bogeyman and Me: Reflexivity and Emotion in `End of Life' Research. Anthropology in Action 2008. [DOI: 10.3167/aia.2008.150103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
Artificial membranes may be resistant or susceptible to catalytic attack by secretory phospholipase A(2) (sPLA(2)) depending on the physical properties of the membrane. Living cells are normally resistant but become susceptible during trauma, apoptosis, and/or a significant elevation of intracellular calcium. Intact erythrocytes and ghosts were studied to determine whether the principles learned from artificial systems apply to biological membranes. Membrane properties such as phospholipid and/or protein composition, morphology, and microscopic characteristics (e.g. fluidity) were manipulated by preparing ghosts under different experimental conditions such as in the presence or absence of divalent cations with or without ATP. The properties of each membrane preparation were assessed by biochemical and physical means (fluorescence spectroscopy and electron and two-photon microscopy using the membrane probes bis-pyrene and laurdan) and compared with sPLA(2) activity. The properties that appeared most relevant were the degree of phosphatidylserine exposure on the outer face of the membrane and changes to the membrane physical state detected by bis-pyrene and laurdan. Specifically, vulnerability to hydrolysis by sPLA(2) was associated with an increase in bilayer order apparently reflective of expansion of membrane regions of diminished fluidity. These results argue that the general principles identified from studies with artificial membranes apply to biological systems.
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Affiliation(s)
- F M Harris
- Department of Zoology, Brigham Young University, Provo, Utah 84602, USA
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Smith SK, Farnbach AR, Harris FM, Hawes AC, Jackson LR, Judd AM, Vest RS, Sanchez S, Bell JD. Mechanisms by which intracellular calcium induces susceptibility to secretory phospholipase A2 in human erythrocytes. J Biol Chem 2001; 276:22732-41. [PMID: 11294854 DOI: 10.1074/jbc.m010880200] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [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: 11/06/2022] Open
Abstract
Exposure of human erythrocytes to the calcium ionophore ionomycin rendered them susceptible to the action of secretory phospholipase A(2) (sPLA(2)). Analysis of erythrocyte phospholipid metabolism by thin-layer chromatography revealed significant hydrolysis of both phosphatidylcholine and phosphatidylethanolamine during incubation with ionomycin and sPLA(2). Several possible mechanisms for the effect of ionomycin were considered. Involvement of intracellular phospholipases A(2) was excluded since inhibitors of these enzymes had no effect. Assessment of membrane oxidation by cis-parinaric acid fluorescence and comparison to the oxidants diamide and phenylhydrazine revealed that oxidation does not participate in the effect of ionomycin. Incubation with ionomycin caused classical physical changes to the erythrocyte membrane such as morphological alterations (spherocytosis), translocation of aminophospholipids to the outer leaflet of the membrane, and release of microvesicles. Experiments with phenylhydrazine, KCl, quinine, merocyanine 540, the calpain inhibitor E-64d, and the scramblase inhibitor R5421 revealed that neither phospholipid translocation nor vesicle release was required to induce susceptibility. Results from fluorescence spectroscopy and two-photon excitation scanning microscopy using the membrane probe laurdan argued that susceptibility to sPLA(2) is a consequence of increased order of membrane lipids.
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Affiliation(s)
- S K Smith
- Department of Zoology, Brigham Young University, Provo, Utah 84602, USA
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Christensen K, Bose HS, Harris FM, Miller WL, Bell JD. Binding of steroidogenic acute regulatory protein to synthetic membranes suggests an active molten globule. J Biol Chem 2001; 276:17044-51. [PMID: 11279152 DOI: 10.1074/jbc.m100903200] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Steroidogenic acute regulatory protein (StAR) mediates cholesterol transport from the outer to the inner mitochondrial membrane during steroid biosynthesis. The mechanism of StAR's action is not established. To address mechanistic issues, we assessed the binding of StAR to artificial membranes by fluorescence resonance energy transfer using endogenous StAR tryptophan residues as the donor and dansyl-phosphatidylethanolamine in the bilayer as the acceptor. Mixing StAR with dansyl-labeled vesicles composed of phosphatidylcholine increased the fluorescence intensity of dansyl emission excited at 280 nm by 10-40%. This interaction was dependent on pH, with a maximum at pH 3.0-3.5 and essentially no change above pH 5. Binding experiments at different temperatures and various combinations of phosphatidylcholine, phosphatidylglycerol, cardiolipin, and cholesterol showed that binding involves an electrostatic step and one or more other steps. Although binding prefers a thermodynamically ordered bilayer, the rate-limiting step occurs either when the bilayer is in a fluid state or when there is cholesterol-induced membrane heterogeneity. Experiments with fluorescence and light scattering indicate that StAR binding promotes ordering and aggregation of anionic membranes. The inactive StAR mutant R182L had lower affinity for the membrane, and the partially active mutant L275P had intermediate affinity. Far-UV CD spectroscopy of StAR in PC membranes show more beta-structure than in aqueous buffers, and the presence of cardiolipin or cholesterol in the membrane fosters a molten globule state. Our data suggest that StAR binds to membranes in a partially unfolded molten globule state that is relevant to the activity of the protein.
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Affiliation(s)
- K Christensen
- Department of Zoology, Brigham Young University, Provo, Utah 84602, USA
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Brenton AG, Dutton J, Harris FM, Jones RA, Lewis DM. Experimental determination of total scattering cross sections for positron-helium collisions. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3700/10/13/023] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Newton RP, Bayliss MA, Khan JA, Bastani A, Wilkins AC, Games DE, Walton TJ, Brenton AG, Harris FM. Kinetic analysis of cyclic CMP-specific and multifunctional phosphodiesterases by quantitative positive-ion fast-atom bombardment mass spectrometry. Rapid Commun Mass Spectrom 1999; 13:574-584. [PMID: 10230067 DOI: 10.1002/(sici)1097-0231(19990415)13:7<574::aid-rcm526>3.0.co;2-r] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two enzymes, cyclic CMP-specific phosphodiesterase and multifunctional phosphodiesterase, are responsible for the hydrolysis of cytidine 3',5'-cyclic monophosphate in living cells. Quantitation of both enzymes has been carried out by positive-ion fast-atom bombardment mass spectrometric analysis of the enzyme incubates after termination of the reaction. The kinetic data obtained are in close agreement with parallel data obtained by the conventional radiometric assay. The extra facility of the mass spectrometry based assay to monitor several incubation components simultaneously has been exploited to study the concurrent hydrolysis of alternate cyclic nucleotide substrates and provides kinetic parameters of significance in interpreting substrate-enzyme interactions. This is extended by the use of collisionally-induced dissociation of the protonated molecules of the liberated products to identify the mononucleotide isomers resulting from the cyclic nucleotide hydrolysis.
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Affiliation(s)
- R P Newton
- Biochemistry Research Group, School of Biological Sciences, University of Wales Swansea, UK
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Mathur D, Kingston RG, Harris FM, Beynon JH. State-diagnosed electron capture collisions of CS2q+(q=2, 3) with atomic and molecular gases. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/17/006] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Mathur D, Kingston RG, Harris FM, Brenton AG, Beynon JH. State-selected electron capture by molecular ions: collisions of CS22+and CS23+with monatomic and diatomic targets. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/8/017] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Walton TJ, Bayliss MA, Pereira ML, Games DE, Genieser HG, Brenton AG, Harris FM, Newton RP. Fast-atom bombardment tandem mass spectrometry of cyclic nucleotide analogues used as site-selective activators of cyclic nucleotide-dependent protein kinases. Rapid Commun Mass Spectrom 1998; 12:449-455. [PMID: 9586232 DOI: 10.1002/(sici)1097-0231(19980430)12:8<449::aid-rcm174>3.0.co;2-v] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The mass spectrometric behaviour of six cyclic nucleotide analogues which activate cyclic AMP-dependent protein kinase was studied by positive-ion fast-atom bombardment (FAB) and collision-induced dissociation (CID) mass-analysed ion kinetic energy (MIKE) spectrometry. The compounds studied were 1,N6-ethenoadenosine-3',5'-cyclic monophosphate, (epsilon-cyclic AMP) and 2'-aza-1,N6-ethenoadenosine-3',5'-cyclic monophosphate, which each activate both isoforms of cyclic AMP-dependent protein kinase and have similar affinity for both the 'fast' and the 'slow' regulatory site of each isoform, N6-phenyl-cyclic AMP, which is selective for the 'fast' regulatory site of each isoform, and 6-chloropurine riboside-3',5'-cyclic monophosphate, 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazole-3',5'-cyclic monophosphate and 8-(4-chlorophenylthio)-adenosine-3',5'-cyclic monophosphate, which are each selective for the 'slow' regulatory site and preferentially activate isoform II. The FAB- and CID/MIKE spectra of the analogues are discussed in relation to their use in studies of the regulation of protein kinase activity by quantitative FAB mass spectrometry.
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Affiliation(s)
- T J Walton
- Biochemistry Group, School of Biological Sciences, University of Wales Swansea, Singleton Park, UK
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Abstract
OBJECTIVE To compare the degree of bacterial circuit colonization, frequency of ventilator-associated pneumonia (VAP), character of respiratory secretions, rewarming of hypothermic patients, disposable costs, and air flow resistance in intensive care patients ventilated using either a heat and moisture exchanger (HME) or hot water (HW) humidifier circuit. DESIGN A prospective, randomized blinded trial of patients in the intensive care unit undergoing mechanical ventilation. SETTING A metropolitan teaching hospital. PATIENTS One hundred sixteen patients undergoing mechanical ventilation for a minimum period of 48 hrs were enrolled. INTERVENTIONS Patients were randomized to three ventilation groups using a) an HW circuit with a 2-day circuit change (n = 41); or b) a bacterial-viral filtering HME in the circuit, with either a 2-day (n = 42); or c) a 4-day circuit change (n = 33). MEASUREMENTS AND MAIN RESULTS Circuit colonization was assessed using quantitative culture of washings taken from the circuit tubing and semiquantitative culture of swabs from the Y connectors. Sixty-seven percent of HW circuits became contaminated compared with 12% in the two HME groups (p < .0001). Median colony counts were lower in the HME groups (p < .0001). If circuits at first circuit change were contaminated in the HW group, 89% of subsequent circuit changes became contaminated compared with 0% and 25% for the 2- and 4-day HME groups, respectively. The frequency of VAP, the time to resolution of admission hypothermia, and the volume and fluidity of secretions were similar for all groups. The resistance of the HME after 24 hrs of use was < 0.025 cm H2O/L at gas flows of 40 L/min. HME use resulted in a cost reduction of $1.48 (Australian)/day. CONCLUSIONS Circuits with a bacterial-viral filtering HME are less readily colonized by bacteria. Contamination is a random event. Humidification technique has no influence on the frequency rate of VAP, the effectiveness of rewarming, nor the character of the respiratory secretions. Breathing resistance is generally low and disposable costs are reduced when an HME is used.
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Affiliation(s)
- R J Boots
- Department of Anaesthesiology, Royal Brisbane Hospital, Queensland, Australia
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Newton RP, Bayliss MA, van Geyschem J, Harris FM, Games DE, Brenton G, Wilkins AC, Diffley P, Walton TJ. Kinetic analysis and multiple component monitoring of effectors of adenylyl cyclase activity by quantitative fast-atom bombardment mass spectrometry. Rapid Commun Mass Spectrom 1997; 11:1060-1066. [PMID: 9204579 DOI: 10.1002/(sici)1097-0231(19970615)11:9<1060::aid-rcm944>3.0.co;2-3] [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: 05/22/2023]
Abstract
The enzyme adenylyl cyclase catalyses the conversion of adenosine 5'-triphosphate (ATP) to adenosine-3',5'-cyclic monophosphate (cyclic AMP), and is an important pharmaceutical target. Quantitation of this enzyme's activity has been carried out by positive-ion fast-atom bombardment mass spectrometric analysis of the enzyme incubation mixture after the reaction has been terminated. The kinetic data obtained are in good agreement with those obtained by the conventional radiometric assay, and this mass spectrometry-based assay offers the facility to monitor the turnover of several components of the incubation simultaneously. This is utilized to study the relative efficiencies of two ATP-regenerating systems, three phosphodiesterase inhibitors and two modified substrates, and to monitor the uptake and conversion of two competing substrates, adenosine 5' triphosphate and 2'-deoxyadenosine-5-triphosphate, to cyclic AMP and to cyclic deoxyAMP, respectively.
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Affiliation(s)
- R P Newton
- Biochemistry Group, School of Biological Sciences, University of Wales Swansea, UK
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Newton RP, Groot N, van Geyschem J, Diffley PE, Walton TJ, Bayliss MA, Harris FM, Games DE, Brenton AG. Estimation of cytidylyl cyclase activity and monitoring of side-product formation by fast-atom bombardment mass spectrometry. Rapid Commun Mass Spectrom 1997; 11:189-194. [PMID: 9050266 DOI: 10.1002/(sici)1097-0231(19970131)11:2<189::aid-rcm741>3.0.co;2-h] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The enzyme cytidylyl cyclase catalyses the conversion of cytidine 5'-triphosphate into cytidine 3',5'-cyclic monophosphate, a third naturally occurring cyclic nucleotide currently under investigation to assign a biochemical function. Quantitation of the activity of this enzyme has been carried out by the positive-ion fast-atom bombardment mass spectrometric analysis of the enzyme incubation mixture after the reaction has been terminated. The data obtained are in good agreement with those obtained from the conventional radiometric and radioimmunoassays of the same enzyme preparations. The advantage of the mass spectrometer-based assay is the facility for multiple component monitoring. Thus, the production of the cytidine diphosphates and monophosphates, and the production of four cytidine 3',5'-cyclic monophosphate analogues as side-products, were simultaneously estimated. The identities of two of the side-products, 2'-O-glutamyl- and 2'-O-aspartyl-cytidine-3',5'-cyclic monophosphate, and of the cytidine 3',5'-cyclic monophosphate product, were confirmed by mass-analysed ion kinetic energy spectra from the collision-induced dissociation of the protonated molecules.
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Affiliation(s)
- R P Newton
- Biochemistry Group, School of Biological Sciences, University of Wales Swansea, Singleton Park, UK
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el-Shazley H, Newton RP, Harris FM, Brenton AG, Walton TJ, Restall CJ, Bayliss M, Wilkins A, Games DE, Langridge JI. Assay of adenylyl cyclase activity by quantitative mass spectrometry. Biochem Soc Trans 1996; 24:474S. [PMID: 8879018 DOI: 10.1042/bst024474s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- H el-Shazley
- School of Biological Sciences, University of Wales Swansea, U.K
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Newton RP, Evans AM, Langridge JI, Walton TJ, Harris FM, Brenton AG. Assay of adenosine 3',5'-cyclic monophosphate-dependent protein kinase activity by quantitative fast atom bombardment mass spectrometry. Anal Biochem 1995; 224:32-8. [PMID: 7710089 DOI: 10.1006/abio.1995.1005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Cyclic AMP-dependent protein kinase is conventionally assayed by measuring the incorporation of radiolabeled phosphate into a histone substrate. Here the assay of the protein kinase is carried out by the positive-ion fast atom bombardment mass spectrometric analysis of the enzyme incubation mixture after the reaction has been terminated. The data obtained are in good agreement with those obtained from the conventional radiometric assay of the same kinase preparation. The inherent advantage of this mass spectrometric assay is the capacity for multiple component monitoring; in addition to the kinase activity, the ability of the enzyme to bind cyclic nucleotides, together with integral ATPase and phosphodiesterase activity, can also be estimated from the same spectra.
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Affiliation(s)
- R P Newton
- Biochemistry Group, School of Biological Sciences, University of Wales Swansea, United Kingdom
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Abstract
A triple-quadrupole spectrometer has been used to study proton-transfer reactions of multiply charged ions generated by electrospray ionization. Doubly and triply charged ions generated from the peptides Arg-Lys-Glu-Val-Tyr and Met-Lys-bradykinin, respectively, were found to undergo proton-transfer reactions with ammonia molecules contained in the RF-only quadrupole collision-gas cell of the spectrometer. With horse-heart myoglobin in the source, ions having charges of 20+, 19+, 16+ and 14+ were selected in turn by the first quadrupole and their proton-transfer reactions with ammonia investigated. For each ion, numerous product ions were detected having charges (n-1)+, (n-2)+, (n-3)+ ... where n was the charge on the reacting parent ion. The possibility of using the experimental technique to measure approximately the proton affinities of multiply charged ions is discussed. Also, a procedure is outlined for identifying the charge states of product ions resulting from collision-induced dissociation of multiply charged ions.
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Affiliation(s)
- A P Hunter
- Mass Spectrometry Research Unit, University College of Swansea, UK
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Griffiths WJ, Langford ML, Harris FM. Double-ionization energies of fluorinated benzene molecules. J Am Soc Mass Spectrom 1993; 4:513-518. [PMID: 24235011 DOI: 10.1016/1044-0305(93)80010-v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/1992] [Revised: 02/05/1993] [Accepted: 02/12/1993] [Indexed: 06/02/2023]
Abstract
Results are reported of an experimental determination by double-charge transfer spectroscopy of the previously unknown double-ionization energies of the fluorinated benzene molecules C6H5F, l,2-C6H4F2, 1,3-C6H4F2, 1,4-C6H4F2, 1,2,3-C6H3F3, 1,2,4-C6H3F3, 1,3,5-C6H3F3, 1,2,3,4-C6H2F4, 1,2,3,5-C6H2F4, 1,2,4,5-C6H2F4, and C6HF5. The data are remarkably similar; the lowest double-ionization energies for all the molecules are within ±0.5 of 25.7 eV, and the data for higher energies suggest that the distributions of electronic state energies for the dications of the molecules show only small variations.
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Affiliation(s)
- W J Griffiths
- Mass Spectrometry Research Unit, University College of Swansea, Singleton Park, SA2 8PP, Swansea, UK
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Langridge JI, Brenton AG, Walton TJ, Harris FM, Newton RP. Analysis of cyclic nucleotide-related enzymes by continuous-flow fast-atom bombardment mass spectrometry. Rapid Commun Mass Spectrom 1993; 7:293-303. [PMID: 8387838 DOI: 10.1002/rcm.1290070407] [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: 05/22/2023]
Abstract
Continuous-flow fast-atom bombardment mass spectrometry has been developed to directly monitor cyclic nucleotide (substrate) and its product levels from an on-going phosphodiesterase reaction. Analysis of cAMP and cCMP phosphodiesterase incubates have been performed where the temporal evolution of the enzymic reaction is monitored and the effect of enzyme concentration upon the rate of reaction determined. Quantitative data on the enzyme kinetics have been obtained, in the form of Lineweaver-Burke plots, that are shown to correlate well with well-established radiometric methods.
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Affiliation(s)
- J I Langridge
- School of Biological Sciences, University of Wales, Swansea, UK
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Liegener C, gren H, Correia N, Griffiths WJ, Svensson S, Harris FM. Auger and double-charge-transfer spectra of polyconjugated hydrocarbons: Butadiene, hexatriene, and polyacetylene. Phys Rev B Condens Matter 1992; 46:11295-11309. [PMID: 10003016 DOI: 10.1103/physrevb.46.11295] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Langridge JI, Walton TJ, Brenton AG, Harris FM, Ghosh D, Evans AM, Newton RP. Fast atom bombardment mass spectrometric analysis of cyclic nucleotides. Biochem Soc Trans 1992; 20:153S. [PMID: 1397544 DOI: 10.1042/bst020153s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- J I Langridge
- Biochemistry Research Group, School of Biological Sciences, University College Swansea, United Kingdom
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Evans AM, Harris FM, Walton TJ, Brenton AG, Langridge JI, Khan JA, Newton RP. Determination of cyclic nucleotide-responsive protein kinase activity by quantitative fast atom bombardment mass spectrometry. Biochem Soc Trans 1992; 20:152S. [PMID: 1327905 DOI: 10.1042/bst020152s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A M Evans
- Biochemistry Research Group, School of Biological Sciences, University College Swansea, United Kingdom
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Walton TJ, Langridge JI, Khan JA, Evans AM, Brenton AG, Ghosh D, Harris FM, Newton RP. Analysis of kinetic parameters of cyclic nucleotide phosphodiesterase systems by fast atom bombardment tandem mass spectrometry. Biochem Soc Trans 1991; 19:397S. [PMID: 1665433 DOI: 10.1042/bst019397s] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- T J Walton
- School of Biological Sciences, University College of Swansea, UK
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Harris FM, Jackson PJ, Rontree JA. Double-ionization energies to ground and excited states of the tungsten hexacarbonyl dication. J Am Soc Mass Spectrom 1991; 2:108-112. [PMID: 24242169 DOI: 10.1016/1044-0305(91)80003-p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/1990] [Accepted: 10/17/1990] [Indexed: 06/02/2023]
Abstract
Tungsten hexacarbonyl was investigated by double-charge-transfer (DCT) spectroscoPy, and the double-ionization energies to ground and electronically excited states of W(CO) 6 (2+) determined. The double-ionization energies corresponding to the first two distinct peaks in the spectra are 22.8 ± 0.3 eV and 28.5 ± 0.3 eV, but numerous overlapping peaks at higher energies are evident. It is shown that the DeI spectra can explain the main features of a previously determined (J. Am. Soc. Mass Spectrom. 1990, 1, 16-27) internal energy distribution curve for W(CO) 6 (2+) ions formed by 70-eV electron ionization of W(CO)6 molecules.
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Affiliation(s)
- F M Harris
- Mass Spectrometry Research Unit, University College of Swansea, Singleton Park, SA2 8PP, Swansea, UK
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Affiliation(s)
- J Dutton
- Department of Physics, University College of Swansea, University of Wales
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