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Gilbert DC, Nankivell M, Rush H, Clarke NW, Mangar S, Al-Hasso A, Rosen S, Kockelbergh R, Sundaram SK, Dixit S, Laniado M, McPhail N, Shaheen A, Brown S, Gale J, Deighan J, Marshall J, Duong T, Macnair A, Griffiths A, Amos CL, Sydes MR, James ND, Parmar MKB, Langley RE. A Repurposing Programme Evaluating Transdermal Oestradiol Patches for the Treatment of Prostate Cancer Within the PATCH and STAMPEDE Trials: Current Results and Adapting Trial Design. Clin Oncol (R Coll Radiol) 2024; 36:e11-e19. [PMID: 37973477 DOI: 10.1016/j.clon.2023.10.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/31/2023] [Indexed: 11/19/2023]
Abstract
AIMS Androgen deprivation therapy (ADT), usually achieved with luteinising hormone releasing hormone analogues (LHRHa), is central to prostate cancer management. LHRHa reduce both testosterone and oestrogen and are associated with significant long-term toxicity. Previous use of oral oestrogens as ADT was curtailed because of cardiovascular toxicity. Transdermal oestrogen (tE2) patches are a potential alternative ADT, supressing testosterone without the associated oestrogen-depletion toxicities (osteoporosis, hot flushes, metabolic abnormalities) and avoiding cardiovascular toxicity, and we here describe their evaluation in men with prostate cancer. MATERIALS AND METHODS The PATCH (NCT00303784) adaptive trials programme (incorporating recruitment through the STAMPEDE [NCT00268476] platform) is evaluating the safety and efficacy of tE2 patches as ADT for men with prostate cancer. An initial randomised (LHRHa versus tE2) phase II study (n = 251) with cardiovascular toxicity as the primary outcome measure has expanded into a phase III evaluation. Those with locally advanced (M0) or metastatic (M1) prostate cancer are eligible. To reflect changes in both management and prognosis, the PATCH programme is now evaluating these cohorts separately. RESULTS Recruitment is complete, with 1362 and 1128 in the M0 and M1 cohorts, respectively. Rates of androgen suppression with tE2 were equivalent to LHRHa, with improved metabolic parameters, quality of life and bone health indices (mean absolute change in lumbar spine bone mineral density of -3.0% for LHRHa and +7.9% for tE2 with an estimated difference between arms of 9.3% (95% confidence interval 5.3-13.4). Importantly, rates of cardiovascular events were not significantly different between the two arms and the time to first cardiovascular event did not differ between treatment groups (hazard ratio 1.11, 95% confidence interval 0.80-1.53; P = 0.54). Oncological outcomes are awaited. FUTURE Efficacy results for the M0 cohort (primary outcome measure metastases-free survival) are expected in the final quarter of 2023. For M1 patients (primary outcome measure - overall survival), analysis using restricted mean survival time is being explored. Allied translational work on longitudinal samples is underway.
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Affiliation(s)
- D C Gilbert
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK; University Hospitals Sussex NHS Foundation Trust, Royal Sussex County Hospital, Brighton, UK.
| | - M Nankivell
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - H Rush
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - N W Clarke
- The Christie and Salford Royal Hospitals, Manchester, UK
| | - S Mangar
- Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - A Al-Hasso
- Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - S Rosen
- National Heart and Lung Institute, Imperial College, London, UK
| | - R Kockelbergh
- Department of Urology, University Hospitals of Leicester, Leicester, UK
| | - S K Sundaram
- Mid-Yorkshire Teaching NHS Trust, Pinderfields Hospital, Wakefield, UK
| | - S Dixit
- Scunthorpe General Hospital, Scunthorpe, UK
| | | | | | | | - S Brown
- Airedale General Hospital, Keighley, UK
| | - J Gale
- Queen Alexandra Hospital, Portsmouth, UK
| | - J Deighan
- Patient Representative, MRC Clinical Trials Unit at UCL, London, UK
| | - J Marshall
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - T Duong
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - A Macnair
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK; Guys and St Thomas' NHS Foundation Trust, London, UK
| | - A Griffiths
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - C L Amos
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - M R Sydes
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - N D James
- Institute of Cancer Research, Sutton, UK
| | - M K B Parmar
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
| | - R E Langley
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials and Methodology, London, UK
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de Boer LL, Vanes L, Melgrati S, Biggs O'May J, Hayward D, Driscoll PC, Day J, Griffiths A, Magueta R, Morrell A, MacRae JI, Köchl R, Tybulewicz VLJ. T cell migration requires ion and water influx to regulate actin polymerization. Nat Commun 2023; 14:7844. [PMID: 38057317 PMCID: PMC10700356 DOI: 10.1038/s41467-023-43423-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/08/2023] [Indexed: 12/08/2023] Open
Abstract
Migration of T cells is essential for their ability to mount immune responses. Chemokine-induced T cell migration requires WNK1, a kinase that regulates ion influx into the cell. However, it is not known why ion entry is necessary for T cell movement. Here we show that signaling from the chemokine receptor CCR7 leads to activation of WNK1 and its downstream pathway at the leading edge of migrating CD4+ T cells, resulting in ion influx and water entry by osmosis. We propose that WNK1-induced water entry is required to swell the membrane at the leading edge, generating space into which actin filaments can polymerize, thereby facilitating forward movement of the cell. Given the broad expression of WNK1 pathway proteins, our study suggests that ion and water influx are likely to be essential for migration in many cell types, including leukocytes and metastatic tumor cells.
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Affiliation(s)
- Leonard L de Boer
- The Francis Crick Institute, London, NW1 1AT, UK
- Department of Immunology and Inflammation, Imperial College London, London, W12 0NN, UK
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, 171 65, Stockholm, Sweden
| | - Lesley Vanes
- The Francis Crick Institute, London, NW1 1AT, UK
| | - Serena Melgrati
- The Francis Crick Institute, London, NW1 1AT, UK
- Department of Immunology and Inflammation, Imperial College London, London, W12 0NN, UK
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | | | - Darryl Hayward
- The Francis Crick Institute, London, NW1 1AT, UK
- GSK, Stevenage, SG1 2NY, UK
| | | | - Jason Day
- Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, UK
| | - Alexander Griffiths
- London Metallomics Facility, Research Management & Innovation Directorate, King's College London, London, SE1 1UL, UK
| | - Renata Magueta
- London Metallomics Facility, Research Management & Innovation Directorate, King's College London, London, SE1 1UL, UK
| | - Alexander Morrell
- London Metallomics Facility, Research Management & Innovation Directorate, King's College London, London, SE1 1UL, UK
| | | | - Robert Köchl
- The Francis Crick Institute, London, NW1 1AT, UK
- Kings College London, London, SE1 9RT, UK
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Firth G, Georgiadou E, Griffiths A, Amrahli M, Kim J, Yu Z, Hu M, Stewart TJ, Leclerc I, Okamoto H, Gomez D, Blower PJ, Rutter GA. Impact of an SLC30A8 loss-of-function variant on the pancreatic distribution of zinc and manganese: laser ablation-ICP-MS and positron emission tomography studies in mice. Front Endocrinol (Lausanne) 2023; 14:1171933. [PMID: 37396167 PMCID: PMC10313231 DOI: 10.3389/fendo.2023.1171933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 05/23/2023] [Indexed: 07/04/2023] Open
Abstract
Introduction Common variants in the SLC30A8 gene, encoding the secretory granule zinc transporter ZnT8 (expressed largely in pancreatic islet alpha and beta cells), are associated with altered risk of type 2 diabetes. Unexpectedly, rare loss-of-function (LoF) variants in the gene, described in heterozygous individuals only, are protective against the disease, even though knockout of the homologous SLC30A8 gene in mice leads to unchanged or impaired glucose tolerance. Here, we aimed to determine how one or two copies of the mutant R138X allele in the mouse SLC30A8 gene impacts the homeostasis of zinc at a whole-body (using non-invasive 62Zn PET imaging to assess the acute dynamics of zinc handling) and tissue/cell level [using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to map the long-term distribution of zinc and manganese in the pancreas]. Methods Following intravenous administration of [62Zn]Zn-citrate (~7 MBq, 150 μl) in wild-type (WT), heterozygous (R138X+/-), and homozygous (R138X+/+) mutant mice (14-15 weeks old, n = 4 per genotype), zinc dynamics were measured over 60 min using PET. Histological, islet hormone immunohistochemistry, and elemental analysis with LA-ICP-MS (Zn, Mn, P) were performed on sequential pancreas sections. Bulk Zn and Mn concentration in the pancreas was determined by solution ICP-MS. Results Our findings reveal that whereas uptake into organs, assessed using PET imaging of 62Zn, is largely unaffected by the R138X variant, mice homozygous of the mutant allele show a substantial lowering (to 40% of WT) of total islet zinc, as anticipated. In contrast, mice heterozygous for this allele, thus mimicking human carriers of LoF alleles, show markedly increased endocrine and exocrine zinc content (1.6-fold increase for both compared to WT), as measured by LA-ICP-MS. Both endocrine and exocrine manganese contents were also sharply increased in R138X+/- mice, with smaller increases observed in R138X+/+ mice. Discussion These data challenge the view that zinc depletion from the beta cell is the likely underlying driver for protection from type 2 diabetes development in carriers of LoF alleles. Instead, they suggest that heterozygous LoF may paradoxically increase pancreatic β-cell zinc and manganese content and impact the levels of these metals in the exocrine pancreas to improve insulin secretion.
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Affiliation(s)
- George Firth
- School of Biomedical Engineering and Imaging Sciences, King’s College London, St Thomas’ Hospital, London, United Kingdom
| | - Eleni Georgiadou
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Imperial Centre for Translational and Experimental Medicine, Imperial College London, London, United Kingdom
| | | | - Maral Amrahli
- London Metallomics Facility, King’s College London, London, United Kingdom
| | - Jana Kim
- School of Biomedical Engineering and Imaging Sciences, King’s College London, St Thomas’ Hospital, London, United Kingdom
| | - Zilin Yu
- School of Biomedical Engineering and Imaging Sciences, King’s College London, St Thomas’ Hospital, London, United Kingdom
| | - Ming Hu
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Imperial Centre for Translational and Experimental Medicine, Imperial College London, London, United Kingdom
| | | | - Isabelle Leclerc
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Imperial Centre for Translational and Experimental Medicine, Imperial College London, London, United Kingdom
- Centre hospitalier de l’Université de Montréal (CHUM) Research Center and Faculty of Medicine, University of Montreal, Montreal, QC, Canada
| | - Haruka Okamoto
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, United States
| | - Daniel Gomez
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, United States
| | - Philip J. Blower
- School of Biomedical Engineering and Imaging Sciences, King’s College London, St Thomas’ Hospital, London, United Kingdom
| | - Guy A. Rutter
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Imperial Centre for Translational and Experimental Medicine, Imperial College London, London, United Kingdom
- Centre hospitalier de l’Université de Montréal (CHUM) Research Center and Faculty of Medicine, University of Montreal, Montreal, QC, Canada
- Lee Kong Chian School of Medicine, Nanyang Technological, University, Singapore, Singapore
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Yang F, Smith MJ, Griffiths A, Morrell A, Chapple SJ, Siow RCM, Stewart T, Maret W, Mann GE. Vascular protection afforded by zinc supplementation in human coronary artery smooth muscle cells mediated by NRF2 signaling under hypoxia/reoxygenation. Redox Biol 2023; 64:102777. [PMID: 37315344 PMCID: PMC10363453 DOI: 10.1016/j.redox.2023.102777] [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] [Received: 05/17/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023] Open
Abstract
Zinc (Zn) has antioxidant, anti-inflammatory and anti-proliferative actions, with Zn dysregulation associated with coronary ischemia/reperfusion injury and smooth muscle cell dysfunction. As the majority of studies concerning Zn have been conducted under non-physiological hyperoxic conditions, we compare the effects of Zn chelation or supplementation on total intracellular Zn content, antioxidant NRF2 targeted gene transcription and hypoxia/reoxygenation-induced reactive oxygen species generation in human coronary artery smooth muscle cells (HCASMC) pre-adapted to hyperoxia (18 kPa O2) or normoxia (5 kPa O2). Expression of the smooth muscle marker SM22-α was unaffected by lowering pericellular O2, whereas calponin-1 was significantly upregulated in cells under 5 kPa O2, indicating a more physiological contractile phenotype under 5 kPa O2. Inductively coupled plasma mass spectrometry established that Zn supplementation (10 μM ZnCl2 + 0.5 μM pyrithione) significantly increased total Zn content in HCASMC under 18 but not 5 kPa O2. Zn supplementation increased metallothionein mRNA expression and NRF2 nuclear accumulation in cells under 18 or 5 kPa O2. Notably, NRF2 regulated HO-1 and NQO1 mRNA expression in response to Zn supplementation was only upregulated in cells under 18 but not 5 kPa. Furthermore, whilst hypoxia increased intracellular glutathione (GSH) in cells pre-adapted to 18 but not 5 kPa O2, reoxygenation had negligible effects on GSH or total Zn content. Reoxygenation-induced superoxide generation in cells under 18 kPa O2 was abrogated by PEG-superoxide dismutase but not by PEG-catalase, and Zn supplementation, but not Zn chelation, attenuated reoxygenation-induced superoxide generation in cells under 18 but not 5kPaO2, consistent with a lower redox stress under physiological normoxia. Our findings highlight that culture of HCASMC under physiological normoxia recapitulates an in vivo contractile phenotype and that effects of Zn on NRF2 signaling are altered by oxygen tension.
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Affiliation(s)
- Fan Yang
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
| | - Matthew J Smith
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Alexander Griffiths
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Alexander Morrell
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Sarah J Chapple
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Richard C M Siow
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Theodora Stewart
- Research Management & Innovation Directorate (RMID), King's College London, UK
| | - Wolfgang Maret
- Departments of Biochemistry and Nutritional Sciences, School of Life Course & Population Sciences, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
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Smith MJ, Yang F, Griffiths A, Morrell A, Chapple SJ, Siow RCM, Stewart T, Maret W, Mann GE. Redox and metal profiles in human coronary endothelial and smooth muscle cells under hyperoxia, physiological normoxia and hypoxia: Effects of NRF2 signaling on intracellular zinc. Redox Biol 2023; 62:102712. [PMID: 37116256 PMCID: PMC10165141 DOI: 10.1016/j.redox.2023.102712] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 04/30/2023] Open
Abstract
Zinc is an important component of cellular antioxidant defenses and dysregulation of zinc homeostasis is a risk factor for coronary heart disease and ischemia/reperfusion injury. Intracellular homeostasis of metals, such as zinc, iron and calcium are interrelated with cellular responses to oxidative stress. Most cells experience significantly lower oxygen levels in vivo (2-10 kPa O2) compared to standard in vitro cell culture (18kPa O2). We report the first evidence that total intracellular zinc content decreases significantly in human coronary artery endothelial cells (HCAEC), but not in human coronary artery smooth muscle cells (HCASMC), after lowering of O2 levels from hyperoxia (18 kPa O2) to physiological normoxia (5 kPa O2) and hypoxia (1 kPa O2). This was paralleled by O2-dependent differences in redox phenotype based on measurements of glutathione, ATP and NRF2-targeted protein expression in HCAEC and HCASMC. NRF2-induced NQO1 expression was attenuated in both HCAEC and HCASMC under 5 kPa O2 compared to 18 kPa O2. Expression of the zinc efflux transporter ZnT1 increased in HCAEC under 5 kPa O2, whilst expression of the zinc-binding protein metallothionine (MT) decreased as O2 levels were lowered from 18 to 1 kPa O2. Negligible changes in ZnT1 and MT expression were observed in HCASMC. Silencing NRF2 transcription reduced total intracellular zinc under 18 kPa O2 in HCAEC with negligible changes in HCASMC, whilst NRF2 activation or overexpression increased zinc content in HCAEC, but not HCASMC, under 5 kPa O2. This study has identified cell type specific changes in the redox phenotype and metal profile in human coronary artery cells under physiological O2 levels. Our findings provide novel insights into the effect of NRF2 signaling on Zn content and may inform targeted therapies for cardiovascular diseases.
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Affiliation(s)
- Matthew J Smith
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Fan Yang
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Alexander Griffiths
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Alexander Morrell
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Sarah J Chapple
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Richard C M Siow
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Theodora Stewart
- Research Management & Innovation Directorate (RMID), King's College London, UK
| | - Wolfgang Maret
- Departments of Biochemistry and Nutritional Sciences, School of Life Course & Population Sciences, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
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Han S, Wang JTW, Yavuz E, Zam A, Rouatbi N, Utami RN, Liam-Or R, Griffiths A, Dickson W, Sosabowski J, Al-Jamal KT. Spatiotemporal tracking of gold nanorods after intranasal administration for brain targeting. J Control Release 2023; 357:606-619. [PMID: 37061195 PMCID: PMC10390340 DOI: 10.1016/j.jconrel.2023.04.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/12/2023] [Accepted: 04/12/2023] [Indexed: 04/17/2023]
Abstract
Intranasal administration is becoming increasingly more attractive as a fast delivery route to the brain for therapeutics circumventing the blood-brain barrier (BBB). Gold nanorods (AuNRs) demonstrate unique optical and biological properties compared to other gold nanostructures due to their high aspect ratio. In this study, we investigated for the first time the brain region-specific distribution of AuNRs and their potential as a drug delivery platform for central nervous system (CNS) therapy following intranasal administration to mice using a battery of analytical and imaging techniques. AuNRs were functionalized with a fluorescent dye (Cyanine5, Cy5) or a metal chelator (diethylenetriaminepentaacetic dianhydride, DTPA anhydride) to complex with Indium-111 via a PEG spacer for optical and nuclear imaging, respectively. Direct quantification of gold was achieved by inductively coupled plasma mass spectrometry. Rapid AuNRs uptake in mice brains was observed within 10 min following intranasal administration which gradually reduced over time. This was confirmed by the 3 imaging/analytical techniques. Autoradiography of sagittal brain sections suggested entry to the brain via the olfactory bulb followed by diffusion to other brain regions within 1 h of administration. The presence of AuNR in glioblastoma (GBM) tumors following intranasal administration was also proven which opens doors for AuNRs applications, as nose-to-brain drug delivery carriers, for treatment of a range of CNS diseases.
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Affiliation(s)
- Shunping Han
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom; London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, United Kingdom
| | - Julie Tzu-Wen Wang
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Emine Yavuz
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom; Advanced Technology Research and Application Center, Selcuk University, Aleaddin Keykubat Yerleskesi, Akademi Mah. Yeni Istanbul Cad. No: 355/C, Selcuklu, Konya, Turkey
| | - Alaa Zam
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Nadia Rouatbi
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Rifka Nurul Utami
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Revadee Liam-Or
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Alexander Griffiths
- London Metallomics Facility, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Wayne Dickson
- Department of Physics, King's College London, Strand, London WC2R 2LS, United Kingdom; London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, United Kingdom
| | - Jane Sosabowski
- Centre for Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
| | - Khuloud T Al-Jamal
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom; London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, United Kingdom.
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Olivera P, Martinez-Lozano H, Leibovitzh H, Xue M, Xu W, Espin-Garcia O, Madsen K, Meddings J, Guttman D, Griffiths A, Huynh H, Turner D, Panancionne R, Steinhart H, Aumais G, Jacobson K, Mack D, Marshall J, Moayyedi P, Lee SH, Turpin W, Croitoru K. A39 HEALTHY FIRST-DEGREE RELATIVES FROM MULTIPLEX FAMILIES VERSUS SIMPLEX HARBOR A HIGHER RISK OF DEVELOPING CROHN'S DISEASE AND ARE ASSOCIATED WITH SUBCLINICAL INFLAMMATION AND ALTERED MICROBIOME COMPOSITION. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991131 DOI: 10.1093/jcag/gwac036.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background Healthy individuals within families with multiple affected members (multiplex families) with Crohn’s disease (CD) have a notably high risk of developing CD. No large prospective pre-disease cohort has assessed differences in preclinical intestinal inflammation, permeability, fecal microbiome, and genetics in healthy at-risk subjects from multiplex families. Purpose We aimed to assess differences in subclinical gut inflammation, genetic risk, gut barrier function, and fecal microbiota composition between first-degree relatives (FDRs) from families with 2 or more affected members (multiplex) and families with only one affected member (simplex). Also, we aimed to assess the risk of future CD onset in subjects from multiplex versus simplex families. Method We utilized the GEM Project cohort of healthy FDRs of CD patients. Subclinical gut inflammation was assessed using fecal calprotectin (FCP) at recruitment. Gut barrier function was assessed using the lactulose-to-mannitol ratio (LMR). For assessment of the CD-related genetic risk, CD-polygenic risk scores (CD-PRS) were calculated. Microbiome composition was assessed by sequencing fecal 16S ribosomal RNA. Generalized estimating equations logistic regression and LEfSe (PMID: 21702898) were used to assess the associations between multiplex status and different outcomes. A Cox proportional hazards model was used to assess time-related risk of future onset of CD. Result(s) 4385 subjects were included. Median age was 17 [IQR 12-24] years, 52.9% were female, 69.4% were siblings and 30.6% were offspring. 4052 (92.4%) and 333 (7.6 %) were simplex and multiplex subjects, respectively. After adjusting for age, sex, family size, and relation to proband, multiplex status was significantly associated with higher baseline FCP (p=0.038), but was not associated with either baseline LMR or CD-PRS (p=0.19 and p=0.33, respectively). We found no significant differences in alpha diversity (Shannon index) (p=0.57) between simplex and multiplex subjects. Beta diversity analysis assessed by the Bray-Curtis dissimilarity index did not reveal significant differences (R2=3e-04, p=0.607). The genera Eisenbergiella, Eggerthellaceae uncultured, and Morganella, were significantly more abundant in multiplex subjects, whereas Lachnospira, Sutterella, Lachnospiraceae_NK4A136_group, and Lachnospiraceae_UCG_004 less abundant. The risk of CD onset was significantly higher in multiplex subjects. In multivariable analysis, multiplex status at recruitment was associated with increased risk of CD onset (adjusted HR 3.41, 95% CI 1.70-6.87, p=0.00055), after adjusting for demographics, FCP, LMR, and CD-PRS. Conclusion(s) Multiplex status compared to simplex is associated with a 3.4-fold increased risk of CD onset, a higher FCP, and fecal bacterial composition. A comprehensive assessment of environmental factors that increase CD risk in multiplex families remains to be elucidated in future studies. Disclosure of Interest None Declared
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Affiliation(s)
- P Olivera
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
| | - H Martinez-Lozano
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
| | - H Leibovitzh
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
| | - M Xue
- Temerty Faculty of Medicine
| | - W Xu
- Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto
| | - O Espin-Garcia
- Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto
| | | | - J Meddings
- Department of Medicine, Cumming School of Medicine, Calgary
| | - D Guttman
- Department of Cell & Systems Biology,Centre for the Analysis of Genome Evolution & Function
| | - A Griffiths
- IBD Center, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Toronto
| | - H Huynh
- Division of Gastroenterology and Nutrition, Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - D Turner
- The Juliet Keidan Institute of Pediatric Gastroenterology and Nutrition, Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - R Panancionne
- Inflammatory Bowel Disease Clinic, Division of Gastroenterology and Hepatology of Gastroenterology, University of Calgary, Calgary
| | - H Steinhart
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
| | - G Aumais
- Department of Medicine, Hôpital Maisonneuve-Rosemont, Montreal University, Montreal
| | - K Jacobson
- British Columbia Children's Hospital, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver
| | - D Mack
- Division of Gastroenterology, Hepatology & Nutrition, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa
| | - J Marshall
- Department of Medicine, McMaster University, Hamilton, Canada
| | - P Moayyedi
- Department of Medicine, McMaster University, Hamilton, Canada
| | - S -H Lee
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
| | - W Turpin
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
| | - K Croitoru
- Division of Gastroenterology & Hepatology, Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital,Temerty Faculty of Medicine
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8
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Tertigas D, Rinawi F, Griffiths A, Surette M. A267 IDENTIFYING ENTEROBACTERIACEAE VIRULENCE GENES ASSOCIATED WITH ACTIVE DISEASE IN ULCERATIVE COLITIS PATIENTS USING CULTURE-DEPENDENT AND -INDEPENDENT APPROACHES. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991278 DOI: 10.1093/jcag/gwac036.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background The prevalence of inflammatory bowel disease (IBD) in Canada is among the highest in the world and is estimated to affect 1 in 100 Canadians by 2030. Ulcerative colitis (UC) is a type of IBD characterized by mucosal inflammation of the large intestine. UC is believed to arise through a complex interplay of the host immune responses and changes in the gut microbiota in a genetically susceptible individual. Therapies targeting the gut microbiota, such as antibiotics and fecal microbiota transplantation (FMT), have been effective in treating UC, suggesting infectious triggers should be explored. Purpose Some data suggests the development of UC can be driven by pathogenic bacteria of the family Enterobacteriaceae, which can carry virulence genes important for colonizing the gut (e.g. fimH) and disrupting the intestinal epithelium (e.g. hylA). However, many studies have focused on a single species (e.g. Escherichia coli) and thereby underestimate the importance of these virulence genes that are shared across the Enterobacteriaceae family. I aim to investigate whether specific virulence genes contribute to disease activity in some patients with UC and to show that these virulence genes are carried by strains of many Enterobacteriaceae species. Method UC patient stool samples were collected throughout enrolment in randomized control trials of FMT for adult UC and microbiome studies in early-onset pediatric UC. The stool samples were cultured on MacConkey agar to enrich for Enterobacteriaceae. Samples from before and after treatment were sent for targetted cultured-enriched metagenomic sequencing and strains were isolated from baseline samples only for whole genome sequencing. The taxonomy of each genome and taxonomic composition of each metagenome were annotated along with virulence genes and antimicrobial resistance genes. Phenotypic assays of cultured isolates were used to capture diversity and virulence activity. Result(s) Approximately 7500 colonies from UC patient stool samples were isolated and phenotyped. Based on the initial screens, 130 isolates were selected to comprise our Enterobacteriaceae strain collection. Across all patient samples, we detected 19 different species of the Enterobacteriaceae family across six genera from the genomic and metagenomic data. We identified virulence genes found across multiple species from the Enterobacteriaceae family within genomes and metagenomes, and by performing phenotypic assays of the cultured isolates. Conclusion(s) Further exploration of the distribution of these virulence genes in UC patients during active disease or remission and healthy controls can provide insight into the pathogenesis of UC. Identifying infectious agents in even a subset of UC patients will allow for more targeted diagnosis and treatment approaches. Disclosure of Interest None Declared
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Affiliation(s)
- D Tertigas
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - F Rinawi
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel,SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, University of Toronto, Toronto
| | - A Griffiths
- SickKids Inflammatory Bowel Disease Center, The Hospital for Sick Children, University of Toronto, Toronto
| | - M Surette
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada,Department of Medicine, McMaster University, Hamilton, Canada
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9
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Parsons V, Juszczyk D, Gilworth G, Ntani G, Henderson M, Smedley J, McCrone P, Hatch SL, Shannon R, Coggon D, Molokhia M, Griffiths A, Walker-Bone K, Madan I. Developing and testing a case-management intervention to support the return to work of health care workers with common mental health disorders. J Public Health (Oxf) 2022:6594717. [PMID: 35640243 DOI: 10.1093/pubmed/fdac055] [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] [Received: 08/10/2021] [Revised: 03/21/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND To assess the feasibility and acceptability of conducting a trial of the clinical effectiveness and cost-effectiveness of a new case-management intervention to facilitate the return to work of health care workers, on sick leave, having a common mental disorder (CMD). METHODS A mixed methods feasibility study. RESULTS Systematic review examined 40 articles and 2 guidelines. Forty-nine National Health Service Occupational Health (OH) providers completed a usual care survey. We trained six OH nurses as case managers and established six recruitment sites. Forty-two out of 1938 staff on sick leave with a CMD were screened for eligibility, and 24 participants were recruited. Out of them, 94% were female. Eleven participants received the intervention and 13 received usual care. Engagement with most intervention components was excellent. Return-to-work self-efficacy improved more in the intervention group than in the usual care group. Qualitative feedback showed the intervention was acceptable. CONCLUSIONS The intervention was acceptable, feasible and low cost to deliver, but it was not considered feasible to recommend a large-scale effectiveness trial unless an effective method could be devised to improve the early OH referral of staff sick with CMD. Alternatively, the intervention could be trialled as a new stand-alone OH intervention initiated at the time of usual OH referral.
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Affiliation(s)
- V Parsons
- Occupational Health Service, Guy's & St Thomas' NHS Foundation Trust, London SE1 7NJ, UK.,Faculty of Life Sciences & Medicine, King's College London, London SE1 9NH, UK
| | - D Juszczyk
- Occupational Health Service, Guy's & St Thomas' NHS Foundation Trust, London SE1 7NJ, UK
| | - G Gilworth
- Occupational Health Service, Guy's & St Thomas' NHS Foundation Trust, London SE1 7NJ, UK
| | - G Ntani
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton SO16 6YD, UK.,MRC Versus Arthritis Centre for Musculoskeletal Health and Work, University of Southampton, Southampton SO16 6YD, UK
| | - M Henderson
- Leeds Institute of Health Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - J Smedley
- Occupational Health, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
| | - P McCrone
- King's Health Economics, King's College London, London SE1 9NH, UK.,Faculty of Education, Health & Human Sciences School of Health Sciences University of Greenwich, King's College London, London SE19NH, UK
| | - S L Hatch
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, Kings College London, London SE5 8AF, UK
| | - R Shannon
- School of Health Sciences, University of Southampton, Southampton SO14 0YN, UK
| | - D Coggon
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton SO16 6YD, UK
| | - M Molokhia
- Department of Population Health Sciences, School of Life Course and Population Sciences, Population Health Sciences, King's College London, London SE1 1UL, UK
| | - A Griffiths
- Mental Health & Neurosciences, School of Medicine, Institute of Mental Health, University of Nottingham, Nottingham NG7 2UH(UK), UK
| | - K Walker-Bone
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton SO16 6YD, UK.,MRC Versus Arthritis Centre for Musculoskeletal Health and Work, University of Southampton, Southampton SO16 6YD, UK
| | - I Madan
- Occupational Health Service, Guy's & St Thomas' NHS Foundation Trust, London SE1 7NJ, UK.,Faculty of Life Sciences & Medicine, King's College London, London SE1 9NH, UK
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10
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Basu S, Irving C, Roberts P, Orr Y, Casey C, Reilly C, Griffiths A, Nair P, Macdonald P, Festa M. Care Close to Home: Justification for a Second Paediatric Heart Transplant Centre in Australia. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1270] [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: 10/18/2022] Open
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11
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Suarez Suarez RG, Dijk SI, Zhang Z, Focht G, Navas-López V, Koletzko S, Griffiths A, Wishart DS, Greiner R, Turner D, Wine E. A176 UTILITY OF MACHINE LEARNING FOR SERUM METABOLOMIC DATA ANALYSIS IN PEDIATRIC CROHN DISEASE. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859329 DOI: 10.1093/jcag/gwab049.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The pathogenesis of pCD remains poorly understood, but evidence suggests roles for genetics, environment, immune response, and gut microbes. Microbial changes can contribute to chronic inflammation and correlate with disease severity. Metabolomics reflects interactions between host immune and gut microbial function by quantifying compounds in biological samples. Therefore, metabolomics provides a unique opportunity to gain insight into pCD pathogenesis.
Aims
To correlate disease severity, metabolites, and clinical data by applying machine learning algorithms in pediatric Crohn Disease (pCD).
Methods
ImageKids is a multicenter, prospective, cohort observational study, conducted to develop magnetic resonance enterography (MRE) indices for pCD. Paired serum specimens were collected at study initiation (Visit One; V1) and completion (Visit Four; V4; 18 months) for 120 pCD patients. Serum from patients with representative clinical scenarios and paired samples was analyzed at The Metabolomics Innovation Centre (TMIC; University of Alberta) and 131 metabolites were identified. Metabolites were analyzed via Unsupervised (U.ML) and Supervised (S.ML) Machine Learning algorithms based on Scikit-learn library in Python. Principal Component Analysis (PCA) was used to identify the variation pattern of the patients’ metabolome. Classifiers and regression algorithms were trained to assess correlation with disease activity.
Results
Results were available for the 56 paired samples. U.ML demonstrated distinct metabolome profiles with V1 clustering mainly attributed to aspartic acid, glutamic acid, and kynurenine. V4 clustering was mainly attributed to spermidine, spermine, total dimethylarginine. Furthermore, demographics was found as an important environmental factor driving distinct patterns of the metabolomics profile.
After training different classifiers and regressors with S. ML algorithms, metabolome data were correlated with disease severity (defined by C-reactive protein and fecal calprotectin). Isoleucine, p-hydroxyhippuric acid, and putrescine were the top three compounds associated with disease severity. The accuracy of our classification models was of 80% and the coefficient of determination of our regression models was 0.5
Conclusions
Metabolomic analysis can provide insight into disease pathogenesis and help predict disease severity among pCD patients. The correlation between metabolomics and disease severity might allow a better understanding of changes in host-microbe interactions and introduce new diagnostic or therapeutic options.
Funding Agencies
CIHR
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Affiliation(s)
| | - S I Dijk
- Physiology, University of Alberta, Edmonton, AB, Canada
| | - Z Zhang
- Jimei University, Xiamen, Fujian, China
| | - G Focht
- Hebrew University, Jerusalem, Israel
| | | | - S Koletzko
- Ludwig-Maximilians-Universitat Munchen, Munchen, Bayern, Germany
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - D S Wishart
- Biological Science, University of Alberta, Edmonton, AB, Canada
| | - R Greiner
- Paediatrics, University of Alberta, Edmonton, AB, Canada
| | - D Turner
- Hebrew University, Jerusalem, Israel
| | - E Wine
- Paediatrics, University of Alberta, Edmonton, AB, Canada
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12
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El-Matary W, Witt J, Bernstein CN, Jacobson K, Mack DR, Otley A, Walters T, Huynh HQ, deBruyn J, Griffiths A, Benchimol EI. A23 ESTIMATING INDIRECT AND OUT-OF-POCKET COSTS IN PEDIATRIC INFLAMMATORY BOWEL DISEASE: A NATION-WIDE CROSS-SECTIONAL ANALYSIS. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859310 DOI: 10.1093/jcag/gwab049.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background Identifying disease-related costs is a crucial step to plan for proper allocation of resources and future healthcare services for persons with inflammatory bowel disease (IBD). Data on pediatric inflammatory bowel disease-associated costs are limited. Aims We aimed to estimate indirect and out of pocket (OOP) pediatric IBD-associated costs in Canada. Methods In a nation-wide cross-sectional analysis, caregivers of children and young adults (<17 years) with IBD were invited to complete a questionnaire on lost work hours and OOP costs related to IBD in the 4 weeks prior to the survey. Participants were re-invited to periodically answer the same questionnaire every 3–9 months for 2 years. Lost productivity was calculated using the Human Capital method. Costs were reported in 2018 inflation-adjusted Canadian dollars. Predictors of high cost users (top 25%) were examined using negative binomial regression. Results Consecutive 243 (82 incident cases) of 262 (92.7%) approached participants completed the first survey with a total of 450 surveys longitudinally completed over 2 years. The annual median indirect costs per patient were $5,951 (IQR $1,812- $12,278), with $5,776 (IQR $1,465-$11,733) for Crohn’s disease (CD) and $6,084 (IQR $2,470-$13,371) for ulcerative colitis (UC) (p=0.77). The annual median per patient OOP costs were $2,925 (IQR $978- $8,125) with $3,021 (IQR $978- $8,125) for CD and $2,600 (IQR $975- $8,125) for UC (p=0.55). Older age (10-17y) at diagnosis (p=0.04) and parents in part-time employment (p=0.01) were predictors of higher indirect costs, while female sex (p<0.001), parents with a lower education level (p<0.001) and lower annual family income (p<0.01) were associated with higher OOP costs. Conclusions Indirect and OOP IBD-associated costs are substantial and more likely to affect families with unstable employment and lower annual income. Examining different strategies and interventions to reduce these costs such as virtual platforms, telephone and outreach clinics especially in poor communities and families with low annual income is warranted. Funding Agencies CIHRThe Children’s Hospital Research Institute of Manitoba
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Affiliation(s)
- W El-Matary
- Pediatric Gastroenterology, University of Manitoba Faculty of Health Sciences, Winnipeg, MB, Canada
| | - J Witt
- University of Manitoba, Winnipeg, MB, Canada
| | | | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - D R Mack
- University of Ottawa, Ottawa, ON, Canada
| | - A Otley
- Dalhousie University, Halifax, NS, Canada
| | - T Walters
- The Hospital for Sick Children, Toronto, ON, Canada
| | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - J deBruyn
- University of Calgary, Calgary, AB, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - E I Benchimol
- Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children Department of Paediatrics, Toronto, ON, Canada
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13
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Leibovitzh H, Lee S, Xue M, Raygoza Garay J, Hernandez-Rocha C, Madsen K, Meddings J, Guttmen DS, Espin Garcia O, Goethel A, Griffiths A, Moayyedi P, Huynh HQ, Jacobson K, Mack DR, Abreu M, Bernstein CN, Marshall J, Turner D, Xu W, Turpin W, Croitoru K. A238 ALTERED GUT MICROBIOME COMPOSITION AND FUNCTION ARE ASSOCIATED WITH GUT BARRIER DYSFUNCTION IN HEALTHY RELATIVES OF CROHN’S DISEASE PATIENTS. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859348 DOI: 10.1093/jcag/gwab049.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background The gut microbiome may play a role in gut barrier homeostasis including epithelial barrier function, but data are scarce and limited to animal studies Aims To assess if alterations in gut microbiome are associated with gut barrier function Methods We utilized the Genetic Environmental Microbial (CCC GEM) cohort of healthy first-degree relatives (FDRs) of Crohn’s disease (CD) patients. Gut barrier function was assessed using the ratio of urinary fractional excretion of lactulose to mannitol (LMR). Stool bacterial DNA was extracted and sequenced for the V4 hypervariable region of the 16S rRNA gene using MiSeq and processed using QIIME2. Microbial functions were imputed using PICRUSt2. The cohort was divided into a North American discovery cohort (n=2,472) and non-North American external validation cohort (n=655). LMR>0.025 was defined as abnormal. LMR-microbiome associations were assessed using multivariable regression model and Random Forest (RF) classifier algorithm. q<0.05 was considered significant when multiple tests were performed Results The median age of the entire cohort was 17.0 years [IQR 12.0; 24.0], 52.6% were females and 25.4% had LMR>0.025. In the discovery cohort, subjects with LMR>0.025 had markedly reduced alpha diversity (Chao1 index, estimate= -0.0037, p=4.0e-04) and altered beta diversity (Bray-Curtis dissimilarity index, PERMANOVA: pseudo-F statistic = 2.99, p=1.0e-03). We identified eight bacterial genera and 52 microbial pathways associated with LMR>0.025 (q<0.05). Four genera (decreased Adlercreutzia [odds ratio(OR)=0.74, 95% confidence interval (CI) 0.6–0.91], Clostridia-UCG-014 [OR=0.71, 95%CI 0.59–0.86], and Clostridium-sensu-stricto-1 [OR=0.75, 95%CI 0.61–0.92] and increased Colidextribacter [OR=1.65, 95%CI 1.2–2.26]) and eight pathways (including decreased biosynthesis of glutamate [OR=0.4, 95%CI 0.21–0.74], tryptophan [OR=0.06, 95%CI 0.01–0.27] and threonine [OR=0.038, 95%CI 0.003–0.41]) were replicated. Bacterial community composition was associated with gut barrier homeostasis as defined by the RF analysis (p= 1.4e-6) Conclusions Gut microbiome community and pathways are associated with gut barrier function. These findings may identify potential microbial targets to modulate barrier function Submitted on behalf of the CCC-GEM Consortium Funding Agencies CCC, CIHRCrohn’s and Colitis Canada Genetics Environment Microbial (CCC-GEM) III; The Leona M. and Harry B. Helmsley Charitable Trust; Kenneth Croitoru is the recipient of the Canada Research Chair in Inflammatory Bowel Diseases
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Affiliation(s)
- H Leibovitzh
- University of Toronto Temerty Faculty of Medicine, Toronto, ON, Canada
| | - S Lee
- University of Toronto Temerty Faculty of Medicine, Toronto, ON, Canada
| | - M Xue
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, ON, Canada
| | - J Raygoza Garay
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, ON, Canada
| | - C Hernandez-Rocha
- University of Toronto Temerty Faculty of Medicine, Toronto, ON, Canada
| | - K Madsen
- University of Alberta, Edmonton, AB, Canada
| | - J Meddings
- University of Calgary Cumming School of Medicine, Calgary, AB, Canada
| | - D S Guttmen
- University of Toronto Department of Cell and Systems Biology, Toronto, ON, Canada
| | - O Espin Garcia
- University of Toronto Dalla Lana School of Public Health, Toronto, ON, Canada
| | - A Goethel
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, ON, Canada
| | - A Griffiths
- The Hospital for Sick Children, Toronto, ON, Canada
| | - P Moayyedi
- McMaster University Department of Medicine, Hamilton, ON, Canada
| | - H Q Huynh
- University of Alberta, Edmonton, AB, Canada
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - D R Mack
- University of Ottawa, Ottawa, ON, Canada
| | - M Abreu
- University of Miami School of Medicine, Miami, FL
| | | | - J Marshall
- McMaster University Medical Centre, Hamilton, ON, Canada
| | - D Turner
- Shaare Zedek Medical Center, Jerusalem, Jerusalem, Israel
| | - W Xu
- University of Toronto Dalla Lana School of Public Health, Toronto, ON, Canada
| | - W Turpin
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, ON, Canada
| | - K Croitoru
- University of Toronto Temerty Faculty of Medicine, Toronto, ON, Canada
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14
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Crowley E, Turner D, Ma C, Nguyen T, McKay H, Schneider R, Silverberg A, Muise A, Feagan B, Griffiths A, Jairath V. A42 HETEROGENEITY IN EFFICACY AND SAFETY ENDPOINTS FOR PEDIATRIC CLINICAL TRIALS IN INFLAMMATORY BOWEL DISEASE: A NEED FOR HARMONIZATION. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859363 DOI: 10.1093/jcag/gwab049.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
NOT PUBLISHED AT AUTHOR’S REQUEST Funding Agencies: None
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Affiliation(s)
- E Crowley
- Western University, London, ON, Canada
| | - D Turner
- Shaare Zedek Medical Center, Jerusalem, Jerusalem, Israel
| | - C Ma
- University of Calgary, Calgary, AB, Canada
| | - T Nguyen
- Alimentiv Inc, London, ON, Canada
| | - H McKay
- The Hospital for Sick Children, Toronto, ON, Canada
| | - R Schneider
- The Hospital for Sick Children, Toronto, ON, Canada
| | | | - A Muise
- The Hospital for Sick Children, Toronto, ON, Canada
| | - B Feagan
- Western University, London, ON, Canada
| | - A Griffiths
- The Hospital for Sick Children, Toronto, ON, Canada
| | - V Jairath
- Western University, London, ON, Canada
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15
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Neustaeter A, Timpano J, Lee S, Xue M, Leibovitzh H, Madsen K, Meddings J, Espin-Garcia O, Goethel A, Griffiths A, Moayyedi P, Steinhart H, Panaccione R, Huynh HQ, Jacobson K, Aumais G, Mack DR, Bernstein CN, Marshall J, Xu W, Turpin W, Croitoru K. A157 DEFINITIONS OF MEDITERRANEAN DIET INCONSISTENTLY ASSOCIATE WITH MARKERS OF GUT BARRIER FUNCTION OR SUBCLINICAL INFLAMMATION IN A POPULATION-BASED COHORT. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859210 DOI: 10.1093/jcag/gwab049.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The Mediterranean Diet (MD) is proposed to reduce the risk of Crohn’s disease (CD) onset in cohort studies, with inconsistent results. This inconsistency may be due to heterogeneity in defining MD scores. Additionally, relationships between MD compliance and intestinal permeability or sub-clinical inflammation are not defined.
Aims
We examined correlations between different MD scores, and determined associations between MD compliance and intestinal permeability or subclinical inflammation in a cohort of first degree relatives of CD patients.
Methods
We used food frequency questionnaire data from 2,112 subjects of the Crohn’s Colitis Canada- Genes, Environment, Microbial (CCC-GEM) project. We obtained 12 MD definitions from the literature and calculated daily percent compliance, we further compared MD scores via pairwise correlations (Kendall’s Tau). We measured intestinal permeability via urinary fractional excretion ratio of lactulose to mannitol (LMR) (LMR≥0.03 defined abnormal), and subclinical inflammation via fecal calprotectin (FCP) measured with BÜHLMANN fCAL® ELISA (FCP≥250 defined abnormal). We fit multivariable regression models between MD compliance and abnormal LMR and FCP, respectively. Two-sided p<0.05 defined significance.
Results
There was large variation in cross-correlations among MD scores, from nil (t=0.0, p=0.54) to highly significant (t=0.97, p<2.2e-16). Associations of MD compliance and abnormal LMR or FCP were in both directions of effect, largely non-significant. Of the 12 MD scores, none associated with abnormal LMR, while 4 associated with abnormal FCP-Odds Ratios =1.22, 1.23, 1.24, and 1.30; p=0.02, 0.02, 0.01, and 0.009, and 95% Confidence Intervals = [1.03,1.45], [1.04,1.45], [1.05,1.47], and [1.07,1.59] respectively. No diet remained significant after correcting for multiple testing.
Conclusions
Currently MD definitions vary widely. Despite discrepancies, we expected consistent directions of effect for MD compliance on LMR or FCP. The largely non-significant associations between MDs suggest limitations in definition, interpretation, and relation to biological outcomes.
Submitted on behalf of the CCC-GEM consortium.
Funding Agencies
CIHRCrohn’s and Colitis Canada Genetics Environment Microbial (CCC-GEM) III;The Leona M. and Harry B. Helmsley Charitable Trust; Justine Timpano is a recipient of a fellowship award from Mount Sinai Hospital; Kenneth Croitoru is the recipient of the Canada Research Chair in Inflammatory Bowel Diseases
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Affiliation(s)
- A Neustaeter
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - J Timpano
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - S Lee
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - M Xue
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - H Leibovitzh
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - K Madsen
- University of Alberta, Edmonton, AB, Canada
| | - J Meddings
- Medicine, University of Calgary, Calgary, AB, Canada
| | - O Espin-Garcia
- Immunology, University of Toronto, Faculty of Medicine, Toronto, ON, Canada
| | - A Goethel
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - P Moayyedi
- McMaster University, Hamilton, ON, Canada
| | - H Steinhart
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - R Panaccione
- Medicine, University of Calgary, Calgary, AB, Canada
| | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - G Aumais
- Hopital Maisonneuve-Rosemont, Montreal, QC, Canada
| | - D R Mack
- Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - C N Bernstein
- McMaster University Medical Centre, Hamilton, ON, Canada
| | - J Marshall
- Immunology, University of Toronto, Faculty of Medicine, Toronto, ON, Canada
| | - W Xu
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - W Turpin
- Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, Zane Cohen Centre for Digestive Diseases, Toronto, ON, Canada
| | - K Croitoru
- Mount Sinai Hospital, Toronto, ON, Canada
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16
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Lee S, Raygoza Garay J, Turpin W, Smith MI, Goethel A, Griffiths A, Moayyedi P, Espin-Garcia O, Aumais G, Bernstein CN, Avni-Biron I, Cino M, Deslandres C, Dotan I, El-Matary W, Feagan BG, Guttmen DS, Huynh HQ, Hyams J, Jacobson K, Mack DR, Marshall J, Otley A, Panaccione R, Silverberg MS, Steinhart H, Turner D, Xu W, Croitoru K. A236 ASSOCIATION OF STOOL METABOLOMIC PROFILE AND MICROBIOME COMPOSITION RISK SCORE WITH FUTURE ONSET OF CROHN’S DISEASE. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859353 DOI: 10.1093/jcag/gwab049.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Microbial composition-based risk score (MRS) was recently developed and validated to predict future risk of developing Crohn’s disease (CD) among healthy first-degree relatives (FDR) of CD patients. We hypothesized that stool metabolomic profiles, some of which are linked to the gut microbiome, are associated with future risk of CD.
Aims
To assess the association of stool metabolomic profile with onset of CD and to determine the correlation between stool metabolites and the MRS
Methods
Healthy FDR of CD patients were recruited as part of the nested case-control cohort of the CCC-GEM Project. Healthy FDRs who later developed CD (n=56) were matched approximately 1:1 by age, sex, follow-up duration, and geographical location with control FDRs remaining healthy (n=66). Stool metabolomics were assessed using the Metabolon’s DiscoveryHD4™ platform, and the stool microbiome characterised by 16s rDNA amplicon sequencing. We fitted a multivariable conditional logistic regression model on the disease status as a function of individual stool metabolites. We additionally performed Spearman correlation between each stool metabolite and the MRS.
Results
Among 1,029 stool metabolites that were analyzed, 79 were associated with future risk of CD (p<0.05); however, none remained significant after multiple testing correction (FDR correction). Considering the exploratory nature of this study with limited sample size, we focused on the top seven metabolites associated with CD onset (p<0.01). Of these, two stool metabolites (dimethylglycine, methylmyristate) were associated with increased risk of CD onset while five (cytosine, guanine, cytidine, hydroxyglutarate, nervonate) were associated with decreased risk of developing CD. The two metabolites positively associated with CD onset were positively correlated with the MRS, while the five metabolites negatively associated with CD onset, were negatively correlated with the MRS. Meanwhile, 24 stool metabolites had significant correlation with MRS (FDR-corrected p<0.2). Among those, a total of four stool metabolites (cytosine, guanine, methymyristate, cytidine) overlapped with the top seven stool metabolites associated with CD onset.
Conclusions
Stool metabolite profiles may predict future risk of CD. A subset of these metabolites have significant correlation with the MRS with consistent direction of effect. This may suggest that stool metabolites mediate the putative effect of the gut microbiome on CD risk. Further validation in the full GEM cohort is warranted.
Funding Agencies
CCC, CIHRThe Leona M. and Harry B. Helmsley Charitable Trust; Kenneth Croitoru is the recipient of the Canada Research Chair in Inflammatory Bowel Diseases; Sun-Ho Lee is a recipient of the Imagine/ CIHR/CAG Fellowship Award; Sun-Ho Lee, Juan Antonio Raygoza Garay, and Williams Turpin are recipients of fellowship awards from the Department of Medicine, Mount Sinai Hospital, Toronto, Canada.
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Affiliation(s)
- S Lee
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - J Raygoza Garay
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - W Turpin
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - M I Smith
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - A Goethel
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - P Moayyedi
- McMaster University, Hamilton, ON, Canada
| | - O Espin-Garcia
- University of Toronto Dalla Lana School of Public Health, Toronto, ON, Canada
| | - G Aumais
- Hopital Maisonneuve-Rosemont, Montreal, QC, Canada
| | | | | | - M Cino
- Toronto Western Hospital, Toronto, ON, Canada
| | - C Deslandres
- Service de gastro-entérologie, CHU Sainte-Justine, Montréal, QC, Canada
| | - I Dotan
- Rabin Medical Center, Petah Tikva, Israel
| | | | - B G Feagan
- Western University Schulich School of Medicine & Dentistry, London, ON, Canada
| | | | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - J Hyams
- Connecticut Children’s Medical Center, Hartford, CT
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - D R Mack
- Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - J Marshall
- McMaster University Medical Centre, Hamilton, ON, Canada
| | - A Otley
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | | | - M S Silverberg
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - H Steinhart
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
| | - D Turner
- Shaare Zedek Medical Center, Jerusalem, Jerusalem, Israel
| | - W Xu
- University of Toronto Dalla Lana School of Public Health, Toronto, ON, Canada
| | - K Croitoru
- Department of Gastroenterology, Mount Sinai Hospital, Toronto, ON, Canada
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17
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Doherty S, Knight JG, Backhouse T, Tran TST, Paterson R, Stahl F, Alharbi HY, Chamberlain TW, Bourne RA, Stones R, Griffiths A, White JP, Aslam Z, Hardare C, Daly H, Hart J, Temperton RH, O'Shea JN, Rees NH. Highly efficient and selective aqueous phase hydrogenation of aryl ketones, aldehydes, furfural and levulinic acid and its ethyl ester catalyzed by phosphine oxide-decorated polymer immobilized ionic liquid-stabilized ruthenium nanoparticles. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00205a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Phosphine oxide-decorated polymer immobilized ionic liquid stabilized RuNPs catalyse the hydrogenation of aryl ketones with remarkable selectivity for the CO bond, complete hydrogenation to the cyclohexylalcohol and hydrogenation of levulinic acid to γ-valerolactone.
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Affiliation(s)
- S. Doherty
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - J. G. Knight
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - T. Backhouse
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - T. S. T. Tran
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - R. Paterson
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - F. Stahl
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - H. Y. Alharbi
- Newcastle University Centre for Catalysis (NUCAT), School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - T. W. Chamberlain
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - R. A. Bourne
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - R. Stones
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - A. Griffiths
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - J. P. White
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - Z. Aslam
- Institute of Process Research & Development, School of Chemistry and School of Chemical and Process Engineering, University of Leeds, Woodhouse Land Leeds, LS2 9JT, UK
| | - C. Hardare
- School of Chemical Engineering and Analytical Sciences, The University of Manchester, The Mill, Sackville Street Campus, Manchester, M13 9PL, UK
| | - H. Daly
- School of Chemical Engineering and Analytical Sciences, The University of Manchester, The Mill, Sackville Street Campus, Manchester, M13 9PL, UK
| | - J. Hart
- School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - R. H. Temperton
- School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - J. N. O'Shea
- School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - N. H. Rees
- Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, UK
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18
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Griffiths A, Dixon J, Egglestone A, Edwards A, Handley R, Trompeter A, Eardley WGP. Evidence-based orthopaedic trauma care in the United Kingdom: Guidelines, registries, carrots and sticks. Eur J Orthop Surg Traumatol 2021; 31:937-945. [PMID: 33825953 DOI: 10.1007/s00590-021-02954-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/21/2021] [Indexed: 11/25/2022]
Abstract
In the United Kingdom (UK), orthopaedic trauma surgeons utilise evidence-based practice through distillation of high-quality primary research, interrogation of registries and implementation of evidence-based guidelines. Concurrent with this ambition of providing exemplar care based on robust patient centred research, there has evolved a culture of remuneration 'by results'. Therefore, there is a drive for excellence combined with a system of collation and validation of data input as well as remuneration where care excels. There are several organisations involved in each stage of this process, the output of which has much that is pertinent to the globally similar consequences of physical injury. However, their relevance and impact within the UK is magnified as they are written against the backdrop of a unified healthcare system. In this article, we will describe the roles of the different organisations guiding and regulating trauma practice across the UK and discuss how the interplay of these impacts on clinical care.
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Affiliation(s)
- A Griffiths
- Department of Trauma and Orthopaedics, James Cook University Hospital, Middlesbrough, TS4 3BW, UK.
| | - J Dixon
- Darlington Memorial Hospital, Hollyhurst Rd, Darlington, DL3 6HX, UK
| | - A Egglestone
- Department of Trauma and Orthopaedics, James Cook University Hospital, Middlesbrough, TS4 3BW, UK
| | - A Edwards
- Trauma Audit Research Network, Summerfield House, 544 Eccles New Road, Salford, M5 5AP, UK
| | - R Handley
- British Orthopaedic Association, 35-43 Lincoln's Inn Fields, Holborn, WC2A 3PE, London, UK
| | - A Trompeter
- St George's University Hospital, Blackshaw Rd, Tooting, SW17 0QT, London, UK
| | - W G P Eardley
- Department of Trauma and Orthopaedics, James Cook University Hospital, Middlesbrough, TS4 3BW, UK
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Entenmann A, Griffiths A. A178 USTEKINUMAB FOLLOWING PRIMARY ANTI-TNF FAILURE AND SECONDARY LOSS OF RESPONSE TO VEDOLIZUMAB IN AN ADOLESCENT WITH ULCERATIVE PANCOLITIS. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.176] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Infliximab is, to date, the only biologic therapy approved for the treatment of ulcerative colitis (UC) in paediatric patients. Although often effective, primary mechanistic failure is more common in UC than in luminal inflammatory paediatric Crohn’s disease (CD). Alternate pathway biologics, specifically vedolizumab (anti-α4β7 integrin) and ustekinumab (anti-interleukins 12/23) are increasingly used in adults with UC. Emerging data from head to head trials of biologics and network meta-analyses of placebo-controlled trial data are being used to guide choice and sequencing of therapeutic agents. Even among adults with UC data concerning combination biologics are very limited.
Aims
To report the outcomes of addition of ustekinumab to vedolizumab in a patient with steroid dependent colitis, previous primary non-response to infliximab and secondary loss of response to vedolizumab monotherapy.
Methods
Case report
Results
A 17 years old girl was hospitalized with acute severe colitis (PUCAI 85) developing as oral prednisone was tapered below 30 mg daily despite ongoing intensified vedolizumab therapy (300 mg q4 weekly) and per rectal steroids. First presentation 2 years earlier with UC pancolitis, responsive to oral prednisone, maintained on oral 5-ASA until first exacerbation 8 months later. Responsive then to IV steroids, but unable to maintain steroid-free remission despite intensified infliximab with therapeutic levels. Vedolizumab initiated in setting of primary mechanistic anti-TNF failure. Steroid-free clinical remission for 7 months of q 8 weekly dosing with normalization of fecal calprotectin (16, 115 µg/g) when symptoms recurred and persisted despite shortening of vedolizumab dosing interval to 4 weeks. Vedolizumab level 34 µg/mL. Symptomatic response to oral prednisone 40 mg, but unsustained with tapering. Hospitalized with up to 10 bloody stools per day, nocturnal stools, abdominal pain and anemia requiring blood transfusion. High doses of IV steroids were given with slow response. Colectomy refused by family. IV ustekinumab 390 mg given. Vedolizumab continued q 8 weekly in view of prior responsiveness. Ustekinumab subcutaneous maintenance therapy initiated at week 8 and continuing q 4 weekly (levels 3.3 mg/L). Oral prednisone tapered and discontinued. At 5 months post ustekinumab initiation, patient is in steroid-free clinical remission (PUCAI 0). Fecal calprotectin has declined from >1800 to 723 µg/g.
Conclusions
In this patient with UC and primary failure of anti-TNF, ustekinumab has demonstrated short-term efficacy in alleviating steroid-dependency. The contribution of continued vedolizumab, to which there had previously been secondary loss of response, is unknown. Nevertheless, the safety profile of vedolizumab allows it to be combined with other therapies in selected treatment-refractory patients.
Funding Agencies
None
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Affiliation(s)
- A Entenmann
- Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, ON, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
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20
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Abstract
BACKGROUND Presenteeism has been linked with lost productivity, impaired health and absence. Whilst much research has focused on types of diseases associated with presenteeism and absenteeism, there has been little investigation into the role of individuals' illness perceptions in these episodes. AIMS To assess how illness perceptions vary between presenteeism and absenteeism episodes. METHODS A cross-sectional questionnaire was distributed to ward-based nurses working with older adults. Data on illness perceptions during presenteeism and absenteeism episodes were collected. Data were analysed via the Paired-Samples t-test, Wilcoxon test and McNemar test. RESULTS Two hundred and seventy cases were analysed (88% response rate). Compared with presenteeism, illnesses during absenteeism were thought to affect lives more (P < 0.001), to have more serious symptoms (P < 0.001), to be more concerning (P = 0.003), more likely to be treated (P = 0.009), more infectious (P < 0.001) and perceived as more legitimate reasons for absenteeism (P < 0.001). Treatment was considered more effective during absenteeism (P < 0.001), whilst workability was better during presenteeism (P < 0.001). Presenteeism was perceived as harmful and absenteeism beneficial for illness. Individuals attended work when presenteeism was expected to be less harmful (P < 0.001) and avoided work when absenteeism was expected to be more beneficial for illness (P < 0.001). CONCLUSIONS Illness perceptions varied significantly between presenteeism and absenteeism episodes and should be included in models of illness behaviour. Findings also highlight that policy may influence illness behaviour and that nurses may attend work despite concerning levels of illness.
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Affiliation(s)
- L A Fiorini
- Centre for Labour Studies, University of Malta, Msida, Malta
| | - J Houdmont
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
| | - A Griffiths
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
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21
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Kuenzig E, Singh H, Bitton A, Kaplan GG, Carroll MW, Otley A, Stukel TA, Spruin S, Nugent Z, Tanyingoh D, Cui Y, Filliter C, Coward S, Griffiths A, Mack D, Jacobson K, Nguyen GC, Targownik L, El-Matary W, Benchimol EI. A26 PEDIATRIC-ONSET INFLAMMATORY BOWEL DISEASE INCREASES THE RISK OF VENOUS THROMBOEMBOLISM: A CANGIEC POPULATION-BASED STUDY. J Can Assoc Gastroenterol 2020. [DOI: 10.1093/jcag/gwz047.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Inflammatory bowel disease (IBD) increases the risk of venous thromboembolism (VTE) in patients of all ages but the risk of VTE among Canadian children with IBD has not previously been investigated.
Aims
Report the incidence of VTE and subtypes pulmonary embolism (PE) and deep vein thrombosis (DVT) in children with and without IBD.
Methods
Children diagnosed with IBD <16y were identified from health administrative data in Ontario (2002–2014), Alberta (2007–2015), and Nova Scotia (2002–2012) using validated algorithms and matched by age and sex to children without IBD (1:5 ratio). Validated ICD-10 codes identified hospitalizations for incident VTE (DVT, PE, and sinovenous thrombosis). Province-specific 5-year cumulative incidence per 1000 person-years (PY) of VTEs were pooled using fixed-effects generalized linear mixed models with a Freeman-Tukey double arcsine transformation. Incidence rate ratios (IRR) within 5 years of diagnosis were pooled using fixed-effects generalized linear mixed models to compare children with and without IBD, and children with Crohn’s disease (CD) and ulcerative colitis (UC).
Results
3127 children with IBD (1826 CD; 1045 UC) were matched to 15,635 children without IBD. The cumulative incidence of VTE within 5 years of IBD diagnosis was 2.8 (95% CI 2.1–3.8) per 1000 PYs compared to 0.13 (95% CI 0.07–0.24) per 1000 PYs in children without IBD (Table). The 5-year cumulative incidences of VTE, DVT, and PE were significantly higher in children with IBD than in children without IBD (VTE: IRR 21.44, 95% CI 10.73–42.82; DVT: IRR 25.15, 95% CI 11.12–56.89; PE: IRR 4.01, 95% CI 1.22–13.18). Compared to UC patients, children with CD were at lower risk of VTE (IRR 0.53, 95% CI 0.29–0.96) and numerically, but not statistically, lower risk of DVT (IRR 0.59, 95% CI 0.30–1.14).
Conclusions
Although VTEs are relatively rare among children with IBD, these children are at much greater risk than children without IBD. Gastroenterologists caring for these patients should be cognizant of VTE risk and provide appropriate prophylaxis to those at high risk of VTE.
Funding Agencies
CCC
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Affiliation(s)
- E Kuenzig
- Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - H Singh
- University of Manitoba, Winnipeg, MB, Canada
| | - A Bitton
- Royal Victoria Hospital, McGill University, Montreal, QC, Canada
| | - G G Kaplan
- Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - M W Carroll
- Pediatric Gastroenterology, Univeristy of Alberta, Edmonton, AB, Canada
| | - A Otley
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | | | | | - Z Nugent
- University of Manitoba, Winnipeg, MB, Canada
| | - D Tanyingoh
- Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - Y Cui
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - C Filliter
- Royal Victoria Hospital, McGill University, Montreal, QC, Canada
| | - S Coward
- University of Calgary, Calgary, AB, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - D Mack
- Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - G C Nguyen
- Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - L Targownik
- Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - W El-Matary
- Pediatric Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| | - E I Benchimol
- Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
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22
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Kellar A, Carmen N, Greer M, Walters T, Griffiths A, Church P. A228 EVOLUTION OF MRE FINDINGS IN PAEDIATRIC PATIENTS WITH SMALL BOWEL CROHN’S DISEASE ON MAINTENANCE METHOTREXATE. J Can Assoc Gastroenterol 2020. [DOI: 10.1093/jcag/gwz047.227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Observational data in children and RCT data in adults indicate that methotrexate (MTX) is associated with induction and maintenance of clinical remission in luminal Crohn’s disease, but efficacy in achieving intestinal healing has not been examined.
Aims
To examine the evolution of MRE signs of inflammation in children treated with MTX.
Methods
In this retrospective cohort study, we reviewed paediatric CD patients on maintenance MTX monotherapy for >4 months who underwent serial MREs between July 2010 and October 2015. MREs were reviewed by a radiologist blind to clinical data. Overall inflammatory activity on each MRE was scored as minimal, mild, moderate or severe, informed by the presence of bowel wall thickness, wall enhancement, T2 hyperintensity, comb sign, mesenteric edema, penetrating disease, stricturing, diffusion restriction and motility. The radiologist’s global assessment of change from MRE 1 to MRE 2 was scored as improved, unchanged or worsened. Clinical findings, disease activity (assessed by weighted paediatric CD activity index [wPCDAI]) and surgical history were also extracted from medical records by a clinician blind to MRE results.
Results
Thirty-five patients were included (median age at diagnosis 12 [IQR 11–14] years; 77% male; 60% inflammatory (B1), 17% stricturing (B2), 23% penetrating (B3) disease). Between baseline and follow-up MRE, wPCDAI (median 15 [IQR 7–43] decreased to 8 [IQR 0–18]; p=0.006) and CRP (median 9 [IQR 2–36] decreased to 5 [IQR 5–9]; p=0.013) and 74% (N=26) were in clinical remission (wPCDAI < 12.5) at MRE 2. MRE features that significantly improved from MRE 1 to 2 were comb sign from 63% (N=37) to 38% (N=14) (p=0.02) and penetrating disease from 14% (N=8) to 0 (p=0.03). After a median of 17 months (IQR 13–23), 51% (N=18) of patients improved, 29% (N=10) worsened and 20% (N=7) had no change based on the radiologist’s global assessment. Of the 21 patients with moderate/severe disease at MRE 1, 33% (N=7) had minimal/mild disease by MRE 2. 66% (N=14/21) continued to have moderate/severe disease at MRE 2. Additionally, a further 14% (N=2/14) of those with minimal/mild disease at baseline MRE progressed to moderate/severe disease at MRE 2. Complete details of change between MRE 1 and MRE 2 are displayed in Figure 1.
Conclusions
Despite signs of clinical improvement, many paediatric CD patients on maintenance MTX therapy for >4 months have unchanged or worsened MRE findings. This underscores the need for follow-up imaging in these cases.
Funding Agencies
None
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Affiliation(s)
- A Kellar
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Alberta Children’s Hospital, University of Calgary, Calgary, AB, Canada
| | - N Carmen
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - M Greer
- Department of Diagnostic Imaging, SickKids Hospital; Department of Medical Imaging, University of Toronto, Toronto, ON, Canada
| | - T Walters
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Hospital, SickKids Inflammatory Bowel Disease Centre, Department of Paediatrics, University of Toronto, Toronto, ON, Canada
| | - A Griffiths
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Hospital, SickKids Inflammatory Bowel Disease Centre, Department of Paediatrics, University of Toronto, Toronto, ON, Canada
| | - P Church
- Division of Gastroenterology, Hepatology and Nutrition, SickKids Hospital, SickKids Inflammatory Bowel Disease Centre, Department of Paediatrics, University of Toronto, Toronto, ON, Canada
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23
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Abstract
Background Recent evidence suggests that some women experience menopausal symptoms that impact on their working lives, and that work environments can impact upon the experience of menopause. As a result, guidance for employers and other key stakeholders about this potential occupational health issue has emerged. To date there has not been a review of these documents to identify their main recommendations for policy and practice. Aims To provide a narrative overview of such guidance and summary of content. Methods Documents published in the UK and available in a major UK trade union library were searched systematically to identify guidance on the topic of menopause and work. An inductive thematic analysis was performed to identify the main themes addressed. Results Twenty-five relevant documents, on average eight pages long, were identified. A minority indicated that the use of scientific evidence informed the content. Five overarching themes were identified: (i) legislation; (ii) policy; (iii) information and training needs; (iv) workplace support; and (v) the physical work environment. Conclusions This overview of UK guidance revealed common areas of concern about reducing and managing difficulties experienced by working menopausal women. Possible areas for action were identified. Some recommendations were common across much of the guidance, whereas others were exclusive. Future guidance might include consideration of all these issues, while making reference both to the evidence base and sources of further information.
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Affiliation(s)
- C Hardy
- Health Psychology Section, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5th Floor Bermondsey Wing, Guy's Campus, London, UK
| | - M S Hunter
- Health Psychology Section, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5th Floor Bermondsey Wing, Guy's Campus, London, UK
| | - A Griffiths
- Division of Psychiatry and Applied Psychology, School of Medicine, Institute of Mental Health, University of Nottingham Innovation Park, Nottingham, UK
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Balassa K, Griffiths A, Winstone D, Li Y, Rocha V, Pawson R. Attrition at the final donor stage among unrelated haematopoietic stem cell donors: the British Bone Marrow Registry experience. Transfus Med 2019; 29:332-337. [DOI: 10.1111/tme.12613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/14/2019] [Accepted: 05/24/2019] [Indexed: 12/30/2022]
Affiliation(s)
- K. Balassa
- British Bone Marrow RegistryNHS Blood and Transplant Bristol UK
- Department of Clinical Haematology, Cancer and Haematology CentreOxford University Hospitals NHS Foundation Trust Oxford UK
| | - A. Griffiths
- Statistics and Clinical StudiesNHS Blood and Transplant Bristol UK
| | - D. Winstone
- British Bone Marrow RegistryNHS Blood and Transplant Bristol UK
| | - Y. Li
- British Bone Marrow RegistryNHS Blood and Transplant Bristol UK
| | - V. Rocha
- British Bone Marrow RegistryNHS Blood and Transplant Bristol UK
- Department of Clinical Haematology, Cancer and Haematology CentreOxford University Hospitals NHS Foundation Trust Oxford UK
| | - R. Pawson
- British Bone Marrow RegistryNHS Blood and Transplant Bristol UK
- Department of Clinical Haematology, Cancer and Haematology CentreOxford University Hospitals NHS Foundation Trust Oxford UK
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Abstract
BACKGROUND The experience of developing dementia while in employment has been explored from the point of view of the employee, but less is known about the perspectives, experiences and needs of employers. AIMS To review systematically literature about the management of employees who develop dementia whilst in employment. METHODS Databases searched included MEDLINE, EMBASE, PsycINFO, CINAHL, BNI, ABI Inform, ISI Web of Science, Open Grey and dementia journals database; 44 documents were identified for inclusion in the review: 22 journal papers, one PhD thesis and 21 articles, reports and webpages from the grey literature. As all documents were qualitative in nature a thematic synthesis of their content was undertaken. RESULTS Three main themes and ten sub-themes were identified. The main themes concerned early presentation and identification in the workplace; reasonable adjustments for people with working age dementia; and the provision of information to raise awareness and facilitate informed choice. The evidence suggested that there is a lack of awareness about working age dementia and that this may impact negatively on employees. Guidance for employers offered suggestions for good practice. CONCLUSIONS Guidance for employers is increasingly available although it rarely refers to the evidence base. There is a need for future studies that explore the effectiveness of guidance and training initiatives for employers. Examples of good practice where employees with dementia have been well supported in the workplace and who have been able to leave the workforce with dignity, would be helpful.
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Affiliation(s)
- L Thomson
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
| | - M Stanyon
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
| | - T Dening
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
| | - R Heron
- BP International Ltd, Sunbury-on-Thames, Middlesex, UK
| | - A Griffiths
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
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Humphrey C, Grant AK, Walters T, Jacobson K, deBruyn J, Huynh HQ, El-Matary W, Bax K, Sherlock M, Mack D, Seidman EG, Deslandres C, Critch J, Griffiths A, Otley A. A260 HEALTH-RELATED QUALITY OF LIFE IMPACT OF STEROIDS VS. EXCLUSIVE ENTERAL NUTRITION FOR INDUCTION IN A LARGE CANADIAN PEDIATRIC IBD INCEPTION COHORT. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- C Humphrey
- Dalhousie University, Halifax, NS, Canada
| | - A K Grant
- Maritime SPOR SUPPORT Unit-Research Services, Halifax, NS, Canada
| | - T Walters
- Hospital for Sick Children, Toronto, ON, Canada
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - J deBruyn
- Paediatrics , University of Calgary, Calgary, AB, Canada
| | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - W El-Matary
- Pediatric Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| | - K Bax
- Western University, London, ON, Canada
| | - M Sherlock
- McMaster University, Hamilton, ON, Canada
| | - D Mack
- University of Ottawa, Ottawa, ON, Canada
| | - E G Seidman
- Gastroenterology, Research Institute McGill University Health Center, Montreal, QC, Canada
| | - C Deslandres
- Service de gastro-entérologie, CHU Sainte-Justine, Montréal, QC, Canada
| | - J Critch
- Memorial University, St. John’s, , Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - A Otley
- Pediatrics, Dalhousie University, Halifax, NS, Canada
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Bollegala N, Lomonaco J, Colucci A, Bannerman H, Griffiths A, Sherlock M, Marshall J, Nguyen GC. A85 IMPROVING OUTCOMES IN THE PEDIATRIC TO ADULT CARE TRANSITION IN IBD (IMPACT IBD). J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Bollegala
- GI, Women’s College Hospital, Toronto, ON, Canada
| | - J Lomonaco
- GI, Women’s College Hospital, Toronto, ON, Canada
| | - A Colucci
- Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - H Bannerman
- McMaster University Medical Centre, Hamilton, ON, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - M Sherlock
- McMaster University Medical Centre, Hamilton, ON, Canada
| | - J Marshall
- McMaster University Medical Centre, Hamilton, ON, Canada
| | - G C Nguyen
- Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
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Attwood D, D’Arcy N, Shepherd J, Griffiths A. 9THERE AND BACK AGAIN: THE DEVELOPMENT OF AN AMBULATORY CARE PATHWAY FOR OLDER PEOPLE LIVING WITH FRAILTY THAT BEGINS AND ENDS IN THE PATIENT’S OWN HOME. PART 2: RESULTS OF A FOUR DAY PILOT. Age Ageing 2019. [DOI: 10.1093/ageing/afy211.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - N D’Arcy
- Newton Abbot Locality, South Devon
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Griffiths A, White C, Thain P, Bearne L. The effect of interactive digital interventions on physical activity in people with inflammatory arthritis: a systematic review. Physiotherapy 2019. [DOI: 10.1016/j.physio.2018.11.106] [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: 11/26/2022]
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Thomas C, Jones A, Griffiths A. Laparoscopic Resection of a Residual Cesarean Section Scar Ectopic Pregnancy and Niche Repair. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.647] [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: 10/28/2022]
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Jones A, Thomas C, Griffiths A. Handling Techniques for Ancillary Laparoscopic Port Placement: A Survey Amongst Trainees and Consultants at the University Hospital of Wales. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.529] [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: 11/28/2022]
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Morley J, Anderson V, Beattie V, Clayton K, Denby D, Eaton M, Glover S, Griffiths A, Maddock N, Mcadam J, Morgan S, Perkins T, Phillips S, Pugh B, Rees P, Roberts J, Robinson W, Rose P. P3.07-05 Can Improving Working Partnerships with Primary Care Prevent Avoidable Emergency Admissions for Patients with Lung Cancer? J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1741] [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: 11/25/2022]
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Jeong J, Lee Wing Ngok A, Walters TD, Griffiths A, Mack DR, Benchimol EI, Huynh HQ, Jacobson K, Otley A, El-Matary W, Deslanders C, Seidman EG, Sherlock M, Bax K, Critch J, Carroll MW, Wine E, Lawrence S, Van Limbergen J, Church P, deBruyn J. A30 ETHNIC VARIATION OF PEDIATRIC INFLAMMATORY BOWEL DISEASE IN CANADA. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Jeong
- University of Calgary, Calgary, AB, Canada
| | | | | | | | | | | | | | | | - A Otley
- CIDsCaNN, Toronto, ON, Canada
| | | | | | | | | | - K Bax
- CIDsCaNN, Toronto, ON, Canada
| | | | | | - E Wine
- CIDsCaNN, Toronto, ON, Canada
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Dhaliwal J, Church P, Mack DR, Huynh HQ, Jacobson K, EL-MATARY W, deBruyn J, Otley A, Deslandres C, Sherlock M, Critch J, Bax K, Seidman EG, Rashid M, Jantchou P, Issenman R, Muise A, Benchimol EI, Wine E, Carroll MW, Lawrence S, Van Limbergen J, Walters TD, Griffiths A. A103 PHENOTYPIC VARIATION IN PEDIATRIC IBD BY AGE: A MULTI-CENTRE INCEPTION COHORT STUDY OF THE CANADIAN CHILDREN IBD NETWORK. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Dhaliwal
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Hospital for Sick Children, Toronto, Toronto, ON, Canada
| | - P Church
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Hospital for Sick Children, Toronto, Toronto, ON, Canada
| | - D R Mack
- Children’s Hospital of Eastern Ontario IBD Centre, Department of Pediatrics, University of Ottawa, Ottawa, ON, Canada
| | - H Q Huynh
- Division of Pediatric gastroenterology and Nutrition, Department of Pediatrics, University of Alberta, Stollery Children’s Hospital, Edmonton, Edmonton, AB, Canada
| | - K Jacobson
- Division of Gastroenterology, Hepatology and Nutrition, B.C. Children’s Hospital, Vancouver, BC, Canada
| | - W EL-MATARY
- Section of Gastroenterology, Department of Pediatrics, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - J deBruyn
- Division of Pediatric Gastroenterology, Department of Pediatrics, Faculty of Medicine, University of Calgary, Alberta Children’s Hospital, Calgary, AB, Canada
| | - A Otley
- Division of Gastroenterology & Nutrition, IWK Health Centre, Department of Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - C Deslandres
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, CHU Sainte-Justine, Montréal, QC, Canada
| | - M Sherlock
- Division of Gastroenterology & Nutrition, McMaster Children’s Hospital, Hamilton Health Sciences, Hamilton, ON, Canada
| | - J Critch
- Division of Gastroenterology, Janeway Children’s Health and Rehabilitation Centre, Memorial University of Newfoundland, St. John’s, Canada
| | - K Bax
- Children’s Hospital of Western Ontario, University of Western Ontario, London, ON, Canada
| | - E G Seidman
- Montreal Children’s Hospital, McGill University, Montreal, QC, Canada
| | - M Rashid
- Division of Gastroenterology & Nutrition, IWK Health Centre, Department of Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - P Jantchou
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, CHU Sainte-Justine, Montréal, QC, Canada
| | - R Issenman
- Division of Gastroenterology & Nutrition, McMaster Children’s Hospital, Hamilton Health Sciences, Hamilton, ON, Canada
| | - A Muise
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Hospital for Sick Children, Toronto, Toronto, ON, Canada
| | - E I Benchimol
- Children’s Hospital of Eastern Ontario IBD Centre, Department of Pediatrics, University of Ottawa, Ottawa, ON, Canada
| | - E Wine
- Division of Pediatric gastroenterology and Nutrition, Department of Pediatrics, University of Alberta, Stollery Children’s Hospital, Edmonton, Edmonton, AB, Canada
| | - M W Carroll
- Division of Pediatric gastroenterology and Nutrition, Department of Pediatrics, University of Alberta, Stollery Children’s Hospital, Edmonton, Edmonton, AB, Canada
| | - S Lawrence
- Division of Gastroenterology, Hepatology and Nutrition, B.C. Children’s Hospital, Vancouver, BC, Canada
| | - J Van Limbergen
- Division of Gastroenterology & Nutrition, IWK Health Centre, Department of Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - T D Walters
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Hospital for Sick Children, Toronto, Toronto, ON, Canada
| | - A Griffiths
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Hospital for Sick Children, Toronto, Toronto, ON, Canada
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35
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Turpin W, Bedrani L, Espin-Garcia O, Smith M, Guttman D, Madsen K, Griffiths A, Moayyedi P, Panaccione R, Huynh HQ, Dieleman LA, Steinhart A, Aumais G, Silverberg MS, Wei X, Paterson A, Croitoru K. A35 GENOME WIDE ASSOCIATION STUDY OF ABNORMAL INTESTINAL PERMEABILITY IN HEALTHY FIRST DEGREE RELATIVES OF CROHN’S PATIENTS. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Turpin
- University of Toronto, Toronto, ON, Canada
| | - L Bedrani
- University of Toronto, Toronto, ON, Canada
| | - O Espin-Garcia
- Lunenfeld-Tanenbaum Research Institute, Toronto, ON, Canada
| | - M Smith
- University of Toronto, Toronto, ON, Canada
| | - D Guttman
- University of Toronto, Toronto, ON, Canada
| | - K Madsen
- University of Alberta, Edmonton, AB, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - P Moayyedi
- McMaster University, Hamilton, ON, Canada
| | | | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - L A Dieleman
- Medicine, University of Alberta, Edmonton, AB, Canada
| | | | - G Aumais
- Montreal University, Montreal, QC, Canada
| | | | - X Wei
- Dalla Lana School of Public Health, Toronto, ON, Canada
| | - A Paterson
- Dalla Lana School of Public Health, Toronto, ON, Canada
| | - K Croitoru
- Mount Sinai Hospital, Toronto, ON, Canada
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36
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Walters TD, Mack DR, Huynh HQ, deBruyn J, Jacobson K, Otley A, EL-MATARY W, Deslandres C, Sherlock M, Seidman EG, Bax K, Critch J, Church PC, Benchimol EI, Wine E, Lawrence S, Van Limbergen J, Jantchou P, Carroll MW, Griffiths A. A17 LINEAR GROWTH IMPAIRMENT IN CANADIAN CHILDREN PRESENTING WITH NEW ONSET IBD: A MULTI-CENTRE INCEPTION COHORT STUDY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T D Walters
- GI, Hepatology and Nutrition, Hospital For Sick Children, Toronto, ON, Canada
| | - D R Mack
- Pediatrics, University of Ottawa/CHEO, Ottawa, ON, Canada
| | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - J deBruyn
- Paediatrics, University of Calgary, Calgary, AB, Canada
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - A Otley
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - W EL-MATARY
- Pediatric Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| | - C Deslandres
- Service de gastro-entérologie, CHU Sainte-Justine, Montréal, QC, Canada
| | - M Sherlock
- Pediatric Gastroenterology, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - E G Seidman
- Gastroenterology, Research Institute McGill University Health Center, Montreal, QC, Canada
| | - K Bax
- Western University, Schulich School of Medicine, London, ON, Canada
| | - J Critch
- Memorial University, St. John’s, Canada
| | - P C Church
- Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, ON, Canada
| | - E I Benchimol
- Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - E Wine
- Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - S Lawrence
- BC Children’s Hospital, Vancouver, BC, Canada
| | - J Van Limbergen
- Pediatric Gastroenterology and Nutrition, IWK Health Centre, Halifax, NS, Canada
| | - P Jantchou
- Service de gastro-entérologie, CHU Sainte-Justine, Montréal, QC, Canada
| | - M W Carroll
- Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
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Bollegala N, Griffiths A, Kovacs A, Steinhart H, Nguyen GC. A86 CHARACTERIZING THE POST-TRANSFER PERIOD AMONGST PATIENTS WITH PEDIATRIC ONSET IBD: THE IMPACT OF ACADEMIC VS. COMMUNITY ADULT CARE ON EMERGENT HEALTH RESOURCE UTILIZATION. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- N Bollegala
- GI, Women’s College Hospital, Toronto, ON, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - A Kovacs
- University Health Network, Toronto, ON, Canada
| | | | - G C Nguyen
- Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
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Crowley E, Carman NJ, Arpino V, Frost K, Ricciuto A, Sherlock M, Critch J, Mack DR, Benchimol EI, Jacobson K, Lawrence S, deBruyn J, EL-MATARY W, Otley A, Huynh HQ, Church PC, Walters TD, Griffiths A. A112 EARLY USE OF THERAPEUTIC DRUG MONITORING TO INDIVIDUALIZE INFLIXIMAB THERAPY IN PAEDIATRIC IBD: A MULTICENTRE PROSPECTIVE COHORT STUDY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E Crowley
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - N J Carman
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - V Arpino
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - K Frost
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - A Ricciuto
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - M Sherlock
- Pediatric Gastroenterology, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - J Critch
- Memorial University, St. John’s, Canada
| | - D R Mack
- Pediatrics, University of Ottawa/CHEO, Ottawa, ON, Canada
| | - E I Benchimol
- Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - K Jacobson
- BC Children’s Hospital, Vancouver, BC, Canada
| | - S Lawrence
- BC Children’s Hospital, Vancouver, BC, Canada
| | - J deBruyn
- Paediatrics, University of Calgary, Calgary, AB, Canada
| | - W EL-MATARY
- Pediatric Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| | - A Otley
- Pediatrics, Dalhousie University, Halifax, NS, Canada
| | - H Q Huynh
- Pediatrics, University of alberta, Edmonton, AB, Canada
| | - P C Church
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - T D Walters
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - A Griffiths
- The Hospital for Sick Children (SickKids), Toronto, ON, Canada
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Popalis CM, Frost K, Carman NJ, Walters TD, Griffiths A, Church PC. A93 POST-INDUCTION INFLIXIMAB TROUGH LEVELS VARY WIDELY AND AID IN INDIVIDUALIZING INFLIXIMAB MAINTENANCE THERAPY FOR PEDIATRIC IBD. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- C M Popalis
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - K Frost
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - N J Carman
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - T D Walters
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - A Griffiths
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - P C Church
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
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Bollegala N, Benchimol EI, Griffiths A, Kovacs A, Steinhart H, ZHAO X, Nguyen GC. A122 CHARACTERIZING A LOST-TO-FOLLOW-UP COHORT AMONGST PATIENTS DIAGNOSED WITH PEDIATRIC ONSET INFLAMMATORY BOWEL DISEASE IN THE PEDIATRIC TO ADULT TRANSFER OF CARE. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- N Bollegala
- GI, Women’s College Hospital, Toronto, ON, Canada
| | - E I Benchimol
- Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - A Griffiths
- Hospital for Sick Children, Toronto, ON, Canada
| | - A Kovacs
- Oregon Health and Science University, Portland, OR
| | | | - X ZHAO
- University of Ottawa, Ottawa, ON, Canada
| | - G C Nguyen
- Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
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Ooi R, Griffiths A. Obstetric competence and compliance with surgical hand antisepsis prior to elective and emergency surgical procedures: a closed-loop audit. J Hosp Infect 2018; 100:219-221. [PMID: 29481831 DOI: 10.1016/j.jhin.2018.02.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 02/19/2018] [Indexed: 11/18/2022]
Affiliation(s)
- R Ooi
- Cardiff University School of Medicine, Cardiff, UK.
| | - A Griffiths
- Department of Obstetrics and Gynaecology, University Hospital Wales, Cardiff, UK
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Eaton M, Clayton K, Phillips S, Perkins T, Griffiths A, Denby D, Roberts J, Maddock N, Pugh B, Rees P, Glover S, McAdam J, Rose P, Anderson V, Robinson W, Morgan S, Beattie V, Morley J. Can improving working partnerships with primary care prevent avoidable emergency admissions for patients with lung cancer? Lung Cancer 2018. [DOI: 10.1016/s0169-5002(18)30136-3] [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: 10/18/2022]
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Ciuffini F, Griffiths A, Vandeleur M. Management of obstructive sleep apnoea in infants. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.985] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Griffiths A, Mukushi A, Jury S, Bryant P, Adams AM. Telehealth-supported home paediatric polysomnography. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.346] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Samra R, Cox T, Gordon A, Conroy S, Lucassen M, Griffiths A. WHAT FACTORS ARE RELATED TO MEDICAL STUDENTS’ AND DOCTORS’ ATTITUDES TOWARD OLDER PATIENTS? Innov Aging 2017. [DOI: 10.1093/geroni/igx004.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R. Samra
- The Open University, Milton Keynes, United Kingdom,
| | - T. Cox
- University of Leicester, Leicester, United Kingdom,
| | - A. Gordon
- University of Nottingham, Nottingham, United Kingdom
| | - S. Conroy
- University of Leicester, Leicester, United Kingdom,
| | - M. Lucassen
- The Open University, Milton Keynes, United Kingdom,
| | - A. Griffiths
- University of Nottingham, Nottingham, United Kingdom
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Du K, Cai H, Park M, Wall TA, Stott MA, Alfson KJ, Griffiths A, Carrion R, Patterson JL, Hawkins AR, Schmidt H, Mathies RA. Multiplexed efficient on-chip sample preparation and sensitive amplification-free detection of Ebola virus. Biosens Bioelectron 2017; 91:489-496. [PMID: 28073029 DOI: 10.1016/j.bios.2016.12.071] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/26/2016] [Accepted: 12/30/2016] [Indexed: 12/23/2022]
Abstract
An automated microfluidic sample preparation multiplexer (SPM) has been developed and evaluated for Ebola virus detection. Metered air bubbles controlled by microvalves are used to improve bead-solution mixing thereby enhancing the hybridization of the target Ebola virus RNA with capture probes bound to the beads. The method uses thermally stable 4-formyl benzamide functionalized (4FB) magnetic beads rather than streptavidin coated beads with a high density of capture probes to improve the target capture efficiency. Exploiting an on-chip concentration protocol in the SPM and the single molecule detection capability of the antiresonant reflecting optical waveguide (ARROW) biosensor chip, a detection limit of 0.021pfu/mL for clinical samples is achieved without target amplification. This RNA target capture efficiency is two orders of magnitude higher than previous results using streptavidin beads and the limit of detection (LOD) improves 10×. The wide dynamic range of this technique covers the whole clinically applicable concentration range. In addition, the current sample preparation time is ~1h which is eight times faster than previous work. This multiplexed, miniaturized sample preparation microdevice establishes a key technology that intended to develop next generation point-of-care (POC) detection system.
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Affiliation(s)
- K Du
- Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA
| | - H Cai
- School of Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
| | - M Park
- Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA
| | - T A Wall
- ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA
| | - M A Stott
- ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA
| | - K J Alfson
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - A Griffiths
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - R Carrion
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - J L Patterson
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - A R Hawkins
- ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA
| | - H Schmidt
- School of Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.
| | - R A Mathies
- Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA.
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Jones AS, Kwasnicka L, Thomas CM, Griffiths A. Understanding the Principles of Electrosurgery During Laparoscopic Surgery: A Survey Amongst Trainees and Consultants in Obstetrics and Gynaecology. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.595] [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: 10/20/2022]
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Jones AS, Kwasnicka L, Griffiths A, Penketh R. Successful Symptomatic Control of Fibroids Using Esmya, in a Patient with a Hostile Abdomen Secondary to Complications of Laparoscopic Excision of Endometriosis. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.774] [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: 11/15/2022]
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Raine D, Begg G, Moore J, Taylor E, Buck R, Honarbakhsh S, Yew Ding W, Redfearn D, Opel A, Opel A, Thomas D, Prakash K, Thomas D, Khokhar A, Honarbakhsh S, Tairova S, Getman N, McAloon C, Honarbakhsh S, Shah M, Al-Lawati K, Al-Lawati K, Ensam B, Collins G, Akbar S, Merghani A, Furniss G, Yones E, Vijayashankar SS, Vijayashankar SS, Shariat H, Moss A, Yeoh A, Sadiq A, Taylor R, Edwards T, Nizam ud Din K, Langley P, Shepherd E, Murray S, Lord S, Bourke J, Plein S, Lip G, Tayebjee MH, Owen N, White S, O'Neill M, Hughes L, Carroll S, Moss-Morris R, Baker V, Kirkby C, Patel K, Robinson G, Antoniou S, Richmond L, Ullah W, Hunter R, Finlay M, Earley M, Whitbread M, Schilling R, Cooper R, Modi S, Somani R, Ng A, Hobson N, Caldwell J, Hadjivassilev S, Ang R, Finlay M, Dhinoja M, Earley M, Sporton S, Schilling R, Hunter R, Hadjivassilev S, Earley M, Lambiase P, Turley A, Child N, Linker N, Owens W, James S, Milner J, Tayebjee M, Sibley J, Griffiths A, Meredith T, Basher Y, Betts T, Rajappan K, Lambiase P, Lowe M, Hunter R, Schilling R, Finlay M, Rakhimbaeva G, Akramova N, Getman T, Hamborg T, O'Hare J, Randeva H, Osman F, Srinivasan N, Kirkby C, Firman E, Tobin L, Murphy C, Lowe M, Hunter R, Finlay M, Schilling R, Lambiase P, Mohan P, Salahia G, Lim H, Lim HS, Batchvarov V, Brennan P, Cox A, Muir A, Behr E, Hamill S, Laventure C, Newell S, Gordon B, Bashir K, Chuen J, Foster W, Yusuf S, Osman F, Hayat S, Panagopoulos D, Davies E, Tomlinson D, Haywood G, Mullan J, Kelland N, Horwood A, Connell N, Odams S, Maloney J, Shetty A, Kyriacou A, Sahu J, Lee J, Uzun O, Wong A, Ashtekar S, Uzun O, Wong A, Ashtekar S, Hashemi J, Gazor S, Redfearn D, Song A, Jenkins J, Glancy J, Wilson D, Sammut E, Diab I, Cripps T, Gill A, Abbas S, Enye J, Wahab A, Elshafie S, Ling K, Carey P, Chatterjee D, Timbrell S, Tufail W, Why H, Martos R, Thornley A, James S, Turley A, Bates M, Linker N, Hassan E, Quick J, Cowell R, Ho E. POSTERS (1)59MULTIPOLAR CONTACT MAPPING GUIDED ABLATION OF TEMPORALLY STABLE HIGH FREQUENCY AND COMPLEX FRACTIONATED ATRIAL ELECTROGRAM SITES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION60INTRA-CARDIAC AND PERIPHERAL LEVELS OF BIOCHEMICAL MARKERS OF FIBROSES IN PATIENTS UNDERGOING CATHETER ABLATION FOR ATRIAL FIBRILATION61THE DON'T WAIT TO ANTICOAGULATE PROJECT (DWAC) BY THE WEST OF ENGLAND ACADEMIC HEALTH SCIENCE NETWORK (AHSN) OPTIMISES STROKE PREVENTION FOR PATIENTS WITH ATRIAL FIBRILLATION (AF) WITHIN PRIMARY CARE IN LINE WITH NICE CG180 IN THE WEST OF ENGLAND62ILLNESS AND TREATMENT REPRESENTATIONS, COPING AND DISTRESS: VICIOUS CYCLES OF EVERYDAY EXPERIENCES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION63THE NEEDS OF THE ADOLESCENT LIVING WITH AN INHERITED CARDIAC CONDITION: THE PATIENTS' PERSPECTIVE64SAFETY AND EFFICACY OF PARAMEDIC TREATMENT OF REGULAR SUPRAVENTRICULAR TACHYCARDIA (PARA-SVT)65NATURAL PROGRESSION OF QRS DURATION FOLLOWING IMPLATABLE CARDIOVERTER DEFIBRILLATORS (ICD) - IMPLANTATION66COMPARISON OF EFFICACY OF VOLTAGE DIRECTED CAVOTRICUSPID ISTHMUS ABLATION USING MINI VS CONVENTIONAL ELETRODES67CRYOBALLOON ABLATION (CRYO) FOR ATRIAL FIBRILLATION (AF) CANNOT BE GUIDED BY TEMPERATURE END-POINTS ALONE68MODERATOR BAND ECTOPY UNMASKED BY ADENOSINE AS A CAUSE OF ECTOPIC TRIGGERED IDIOPATHIC VF69EARLY CLINICAL EXPERIENCE WITH TARGETED SITE SELECTION FOR THE WiCS-LV ELECTRODE FOR CRT70DOES VECTOR MAPPING PRIOR TO IMPLANTABLE LOOP RECORDER INSERTION IMPROVE THE DETECTION OF ARRHYTHMIA?71THE ROLE OF SPECKLE TRACKING STRAIN IMAGING IN ASSESSING LEFT VENTRICULAR RESPONSE TO CARDIAC RESYNCHRONISATION THERAPY IN RESPONDERS AND NON-RESPONDERS72EVALUATING PATIENTS' EXPERIENCE AND SATISFACTION OF THE ATRIAL FIBRILLATION ABLATION PROCEDURE: A RETROSPECTIVE ANALYSIS73TROUBLESHOOTING LV LEAD IMPLANTATION - NOVEL “UNIRAIL TECHNIQUE”74SUBCLINICAL ATHEROSCELEROSIS AND COGNITIVE IMPAIRMENT75EFFECT OF LOZARTANE ON DEVELOPMENT OF THE ELECTRICAL INSTABILITY OF THE MYOCARDIUM76THE INTERPLAY BETWEEN BODY COMPOSITION AND LEFT VENTRICULAR REMODELLING IN CARDIAC RESYNCHRONISATION THERAPY77FAMILY SCREENING IN IDIOPATHIC VENTRICULAR FIBRILLATION78MANAGEMENT OF ATRIAL FIBRILLATION IN A LARGE TEACHING HOSPITAL79THE EFFECT OF LEFT VENTRICULAR LEAD POSITION ON SURVIVAL IN PATIENTS WITH BINVENTRICULAR PACEMAKRS/DEFIBRILLATORS80ACUTE DEVICE IMPLANT-RELATED COMPLICATIONS DO NOT INCREASE LATE MORTALITY81ABORTED CARIDAC ARREST AS THE SENTINEL PRESENTATION IN A COHORT OF PATIENTS WITH THE CONCEALED BRUGADA PHENOTYPE82POST-CARDIAC DEVICE IMPLANTATION MOBILISATION ADVICE: A NATIONAL SURVEY83DO RISK SCORES DEVELOPED TO PROTECT ONE-YEAR MORTALITY ACTUALLY HELP IN ACCURATELY SELECTING PATIENTS RECEIVING PRIMARY PREVENTION ICD?84ATRIAL TACHYCARDIA ARISING FROM THE NON-CORONARY AORTIC CUSP85THE EFFECT OF DIFFERENT ATRIAL FIBRILLATION ABLATION STRATEGIES ON SURFACE ECG P WAVE DURATION86PRESCRIBING DRONEDARONE: HOW IS IT DONE ACROSS THE UK AND IS IT SAFE?87A CASE OF WIDE COMPLEX TACHYCARDIA88TRANSITION TO DEDICATED DAY CASE DEVICES - SAFETY AND EFFICACY IN A LARGE VOLUME CENTRE89SEQUENTIAL REGIONAL DOMINANT FREQUENCY MAPPING DURING ATRIAL FIBRILLATION: A NOVEL TEQUNIQUE90ELECTIVE CARDIOVERSION ENERGY PROTOCOLS: A RETROSPECTIVE COMPARISON OF ESCALATION STRATEGIES91THE INCIDENCE OF CLINCALLY RELEVANT HAEMATOMAS WITH PERIOPERATIVE USE OF NEWER P2Y12 INHIBITORS AND INTERRUPTED NOAC THERAPY IN CARDIAC IMPLANTABLE ELECTRONIC DEVICE INSERTION92AN AUDIT OF THE OUTCOMES FOR CHEMICAL AND DIRECT CURRENT CARDIOVERSION FOR ATRIAL FIBRILLATION AT OUR DGH OVER A 3 YEAR DURATION93REAL LIFE ACUTE MANAGEMET OF HAEMODYNAMICALLY TOLERATED MONOMORPHIC VENTRICULAR TACHYCARDIA. ARE WE MAKING EVIDENCE BASED ON DECISIONS?94A SERVICE EVALUATION TO ASSESS THE EFFICACY AND SAFETY OF NOVEL ORAL ANTICOAGULANTS VERSUS WARFARIN FOR ELECTIVE CARDIVERSION IN PATIENTS WITH NON VALVULAR AF IN A NURSE LED CARDIOVERSION SERVICE95PICK UP RATE OF IMPLANTED LOOP RECORDER AT A DISTRICT HOSPITAL. Europace 2016. [DOI: 10.1093/europace/euw273] [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: 11/13/2022] Open
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Bulman C, Forde-Johnson C, Griffiths A, Hallworth S, Kerry A, Khan S, Mills K, Sharp P. The development of peer reflective supervision amongst nurse educator colleagues: An action research project. Nurse Educ Today 2016; 45:148-155. [PMID: 27504899 DOI: 10.1016/j.nedt.2016.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/30/2016] [Accepted: 07/20/2016] [Indexed: 06/06/2023]
Abstract
This action research study developed the use of peer reflective supervision (PRS) amongst eight nurse educators contributing to an undergraduate Adult Nursing programme at a UK University. During the academic year (2013-14), nurse educator co-researchers met for an introductory workshop and then met regularly in pairs to facilitate each other's reflection. This provided an opportunity for nurse educators to reflect on identified issues linked to their role with a facilitative peer. Educators met three additional times in a Reflexive Learning Group (RLG), to gather data on their use of PRS. Audio-recordings from the RLGs were transcribed and analysed using Norton's (2009) thematic analysis framework. Co-researchers iteratively validated the data and an external validation group critically viewed the evidence. Overall, seven themes were generated from the three research cycles. These were: PRS as a Valuable Affirming Experience; Time Issues; Facilitation- Support, Trust and Challenge; Developing a Flexible 'Toolbox'; To Write or Not to Write; Drawing on Literature; and Requirement for Action. Findings add new evidence regarding use of a flexible toolbox of resources to develop reflection and offer practical guidance on the development of PRS. Nurse educators often experienced similar concerns, and a facilitative supervision structure allowed co-researchers to positively explore these. Recognition of work pressures and requirement for time and space for reflection was highlighted, particularly regarding writing, and exploring the literature, to develop critical analysis of experiences. The importance of action as part of the reflective process was emphasised. Co-researchers reported positive personal change as well as the opportunity to highlight issues through their reflection for further action within the organisation. The study adds constructive evidence for the use of reflection to explore professional work, make sense of experiences and develop positive action. It has transferability to a wider international audience interested in the development of reflection amongst colleagues and the use of insider research techniques to challenge and develop practice.
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Affiliation(s)
- C Bulman
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom.
| | - C Forde-Johnson
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
| | - A Griffiths
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
| | - S Hallworth
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
| | - A Kerry
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
| | - S Khan
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
| | - K Mills
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
| | - P Sharp
- Oxford Brookes University, Faculty of Health and Life Sciences, Marston Road Campus, Oxford, United Kingdom
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