1
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Hardman G, Rushton S, Hogg R, Booth K, Dark J, Fisher A. The UK Lung Risk Index (UKLRI); An Objective Prognostic Score Based on Donor and Recipient Factors to Aid Decision Making in Lung Utilisation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.114] [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: 04/05/2023] Open
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2
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Brainard J, Rushton S, Winters T, Hunter PR. Spatial Risk Factors for Pillar 1 COVID-19 Excess Cases and Mortality in Rural Eastern England, UK. Risk Anal 2022; 42:1571-1584. [PMID: 34601734 PMCID: PMC8661982 DOI: 10.1111/risa.13835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 08/06/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Understanding is still developing about spatial risk factors for COVID-19 infection or mortality. This is a secondary analysis of patient records in a confined area of eastern England, covering persons who tested positive for SARS-CoV-2 through end May 2020, including dates of death and residence area. We obtained residence area data on air quality, deprivation levels, care home bed capacity, age distribution, rurality, access to employment centers, and population density. We considered these covariates as risk factors for excess cases and excess deaths in the 28 days after confirmation of positive Covid status relative to the overall case load and death recorded for the study area as a whole. We used the conditional autoregressive Besag-York-Mollie model to investigate the spatial dependency of cases and deaths allowing for a Poisson error structure. Structural equation models were applied to clarify relationships between predictors and outcomes. Excess case counts or excess deaths were both predicted by the percentage of population age 65 years, care home bed capacity and less rurality: older population and more urban areas saw excess cases. Greater deprivation did not correlate with excess case counts but was significantly linked to higher mortality rates after infection. Neither excess cases nor excess deaths were predicted by population density, travel time to local employment centers, or air quality indicators. Only 66% of mortality was explained by locally high case counts. Higher deprivation clearly linked to higher COVID-19 mortality separate from wider community prevalence and other spatial risk factors.
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Affiliation(s)
- Julii Brainard
- Norwich Medical SchoolUniversity of East AngliaNorwichUK
| | - Steve Rushton
- School of Natural and Environmental SciencesNewcastle UniversityNewcastle upon TyneUK
| | - Tim Winters
- Insight and AnalyticsNorfolk County CouncilNorwichUK
| | - Paul R. Hunter
- Norwich Medical SchoolUniversity of East AngliaNorwichUK
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3
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Brainard J, Rushton S, Winters T, Hunter PR. Spatial Risk Factors for Pillar 1 COVID-19 Excess Cases and Mortality in Rural Eastern England, UK. Risk Anal 2022; 42:1571-1584. [PMID: 34601734 DOI: 10.1101/2020.12.03.20239681] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 08/06/2021] [Accepted: 09/13/2021] [Indexed: 05/23/2023]
Abstract
Understanding is still developing about spatial risk factors for COVID-19 infection or mortality. This is a secondary analysis of patient records in a confined area of eastern England, covering persons who tested positive for SARS-CoV-2 through end May 2020, including dates of death and residence area. We obtained residence area data on air quality, deprivation levels, care home bed capacity, age distribution, rurality, access to employment centers, and population density. We considered these covariates as risk factors for excess cases and excess deaths in the 28 days after confirmation of positive Covid status relative to the overall case load and death recorded for the study area as a whole. We used the conditional autoregressive Besag-York-Mollie model to investigate the spatial dependency of cases and deaths allowing for a Poisson error structure. Structural equation models were applied to clarify relationships between predictors and outcomes. Excess case counts or excess deaths were both predicted by the percentage of population age 65 years, care home bed capacity and less rurality: older population and more urban areas saw excess cases. Greater deprivation did not correlate with excess case counts but was significantly linked to higher mortality rates after infection. Neither excess cases nor excess deaths were predicted by population density, travel time to local employment centers, or air quality indicators. Only 66% of mortality was explained by locally high case counts. Higher deprivation clearly linked to higher COVID-19 mortality separate from wider community prevalence and other spatial risk factors.
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Affiliation(s)
- Julii Brainard
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Steve Rushton
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Tim Winters
- Insight and Analytics, Norfolk County Council, Norwich, UK
| | - Paul R Hunter
- Norwich Medical School, University of East Anglia, Norwich, UK
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4
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Jones DEJ, Wetten A, Barron-Millar B, Ogle L, Mells G, Flack S, Sandford R, Kirby J, Palmer J, Brotherston S, Jopson L, Brain J, Smith GR, Rushton S, Jones R, Rushbrook S, Thorburn D, Ryder SD, Hirschfield G, Dyson JK. The relationship between disease activity and UDCA response criteria in primary biliary cholangitis: A cohort study. EBioMedicine 2022; 80:104068. [PMID: 35609437 PMCID: PMC9130524 DOI: 10.1016/j.ebiom.2022.104068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/29/2022] [Accepted: 05/04/2022] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Uncertainty exists about how best to identify primary biliary cholangitis (PBC) patients who would benefit from second-line therapy. Existing, purely clinical, ursodeoxycholic acid (UDCA) response criteria accept degrees of liver biochemistry abnormality in responding patients, emerging data, however, suggest that any degree of ongoing abnormality may, in fact, be associated with an increased risk of adverse outcomes. This cohort study explores the link between response status, the biology of high-risk disease and its implications for clinical practice. METHODS Proteomics, exploring 19 markers previously identified as remaining elevated in PBC following UDCA therapy, were performed on 400 serum samples, from participants previously recruited to the UK-PBC Nested Cohort between 2014 and 2019. All participants had an established diagnosis of PBC and were taking therapeutic doses of UDCA for greater than 12 months. UDCA response status was assessed using Paris 1, Paris 2 and the POISE criteria, with additional analyses using normal liver blood tests stratified by bilirubin level. Statistical analysis using parametric t tests and 1-way ANOVA. FINDINGS Disease markers were statistically significantly higher in UDCA non-responders than in responders for all the UDCA response criteria, suggesting a meaningful link between biochemical disease status and disease mechanism. For each of the criteria, however, marker levels were also statistically significantly higher in responders with ongoing liver function test abnormality compared to those who had normalised their liver biochemistry. IL-4RA, IL-18-R1, CXCL11, 9 and 10, CD163 and ACE2 were consistently elevated across all responder groups with ongoing LFT abnormality. No statistically significant differences occurred between markers in normal LFT groups stratified by bilirubin level. INTERPRETATION This study provides evidence that any ongoing elevation in alkaline phosphatase levels in PBC after UDCA therapy is associated with some degree of ongoing disease activity. There was no difference in activity between patients with normal LFT when stratified by bilirubin. These findings suggest that if our goal is to completely control disease activity in PBC, then normalisation of alkaline phosphatase and bilirubin should be the treatment target. This would also simplify messaging around goals of therapy in PBC, benefiting both patients and clinicians. FUNDING Funding by the UK Medical Research Council (Stratified Medicine Programme) and an independent research grant by Pfizer. The study funders played no role in the study design, data collection, data analyses, data interpretation or manuscript writing.
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Affiliation(s)
- David E J Jones
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom.
| | - Aaron Wetten
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom; Freeman Hospital, Newcastle-upon-Tyne, United Kingdom
| | - Ben Barron-Millar
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Laura Ogle
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - George Mells
- Dept of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Steven Flack
- Dept of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Richard Sandford
- Dept of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - John Kirby
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Jeremy Palmer
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Sophie Brotherston
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Laura Jopson
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - John Brain
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Graham R Smith
- Bioinformatics Support Unit (BSU), Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Steve Rushton
- School of Natural and Environmental Science, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Rebecca Jones
- Liver Unit, St James' Hospital, Leeds, United Kingdom
| | - Simon Rushbrook
- University Department of Hepatology, UEA Medical School, Norwich, United Kingdom
| | | | - Stephen D Ryder
- NIHR Nottingham Biomedical Research centre at Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Gideon Hirschfield
- Queen Elizabeth Hospital, Birmingham, United Kingdom; Toronto Centre for Liver Disease, University of Toronto, Toronto, Canada
| | - Jessica K Dyson
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom; Freeman Hospital, Newcastle-upon-Tyne, United Kingdom
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Schreeg ME, Radkin M, Haugland J, Murphy BG, Rushton S, Linder KE. Ameloblastic carcinoma in horses: case report and literature review. J Vet Diagn Invest 2022; 34:528-534. [PMID: 35037545 PMCID: PMC9254059 DOI: 10.1177/10406387211068459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Ameloblastic carcinoma is a malignant odontogenic neoplasm that has been reported only rarely in veterinary species. A 16-y-old Arabian crossbred mare was presented for evaluation of a hard mass on the body of the mandible, with evidence of osteolysis on radiographs. Incisional biopsies revealed an invasive neoplasm comprised of spindloid epithelial cells with a high mitotic count and partial dual cytokeratin-vimentin immunoreactivity. The horse was euthanized because of rapid tumor progression 3 mo after presentation. Postmortem evaluation revealed partial obliteration of the mandible by a large, firm-to-hard, tan, locally destructive and invasive mass with no gross or histologic evidence of metastasis. Postmortem histology revealed a poorly differentiated epithelial neoplasm with variably prominent features suggestive of odontogenic histogenesis: a plexiform ribbon architecture, infrequent basilar palisading with antibasilar nuclei, rare basilar cytoplasmic clearing, subepithelial matrix hyalinization, and partial dual cytokeratin-vimentin immunoreactivity. Features of malignancy included regions of necrosis, pronounced cellular atypia, a high mitotic count, extensive tissue invasion and local tissue destruction, and extension of neoplastic cells beyond the margins of the mandibular bone. Collectively, these features are most consistent with mandibular ameloblastic carcinoma. Including our case described here, ameloblastic carcinoma has been reported in only 5 horses. The microscopic features reported most consistently are dual cytokeratin-vimentin immunoreactivity, a high mitotic count, and basilar palisading. Ameloblastic carcinoma should be considered as a differential diagnosis for rapidly growing, locally invasive masses arising from the dentate jaw of horses.
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Affiliation(s)
- Megan E. Schreeg
- Megan E. Schreeg, The Ohio State
University, 1925 Coffey Rd, Columbus, OH 43210, USA.
| | - Megan Radkin
- 3H Equine Hospital and Mobile Veterinary Services, New
Hill, NC, USA
| | | | - Brian G. Murphy
- University of California–Davis, School of Veterinary
Medicine, Davis, CA, USA
| | - Steve Rushton
- Rollins Animal Disease Diagnostic Laboratory, Raleigh,
NC, USA
| | - Keith E. Linder
- North Carolina State University College of Veterinary
Medicine, Raleigh, NC, USA
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Berman M, Ali A, Macklam D, Garcia Saez D, Jothidasan A, Husain M, Stock U, Mehta V, Venkateswaran R, Curry P, Messer S, Mukadam M, Mascaro J, Clarke S, Baxter J, Tsui S, Large S, Osman M, Kaul P, Boda G, Jenkins D, Simmonds J, Quigley R, Whitney J, Gardiner D, Watson C, Rubino A, Currie I, Foley J, Macleod A, Slater C, Marley F, Downward L, Rushton S, Armstrong L, Ayton L, Ryan M, Parker M, Gibson S, Spence S, Quinn K, Watson S, Forsythe J. UK National DCD Heart Transplant Program - First Year Experience. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.117] [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: 11/16/2022] Open
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7
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Barron-Millar B, Ogle L, Mells G, Flack S, Badrock J, Sandford R, Kirby J, Palmer J, Jopson L, Brain J, Smith GR, Rushton S, Hegade VS, Jones R, Rushbrook S, Thorburn D, Ryder S, Hirschfield G, Dyson JK, Jones DEJ. The Serum Proteome and Ursodeoxycholic Acid Response in Primary Biliary Cholangitis. Hepatology 2021; 74:3269-3283. [PMID: 34129689 DOI: 10.1002/hep.32011] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/20/2021] [Accepted: 05/22/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Stratified therapy has entered clinical practice in primary biliary cholangitis (PBC), with routine use of second-line therapy in nonresponders to first-line therapy with ursodeoxycholic acid (UDCA). The mechanism for nonresponse to UDCA remains, however, unclear and we lack mechanistic serum markers. The UK-PBC study was established to explore the biological basis of UDCA nonresponse in PBC and identify markers to enhance treatment. APPROACH AND RESULTS Discovery serum proteomics (Olink) with targeted multiplex validation were carried out in 526 subjects from the UK-PBC cohort and 97 healthy controls. In the discovery phase, untreated PBC patients (n = 68) exhibited an inflammatory proteome that is typically reduced in scale, but not resolved, with UDCA therapy (n = 416 treated patients). Nineteen proteins remained at a significant expression level (defined using stringent criteria) in UDCA-treated patients, six of them representing a tightly linked profile of chemokines (including CCL20, known to be released by biliary epithelial cells (BECs) undergoing senescence in PBC). All showed significant differential expression between UDCA responders and nonresponders in both the discovery and validation cohorts. A linear discriminant analysis, using serum levels of C-X-C motif chemokine ligand 11 and C-C motif chemokine ligand 20 as markers of responder status, indicated a high level of discrimination with an AUC of 0.91 (CI, 0.83-0.91). CONCLUSIONS UDCA under-response in PBC is characterized by elevation of serum chemokines potentially related to cellular senescence and was previously shown to be released by BECs in PBC, suggesting a potential role in the pathogenesis of high-risk disease. These also have potential for development as biomarkers for identification of high-risk disease, and their clinical utility as biomarkers should be evaluated further in prospective studies.
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Affiliation(s)
- Ben Barron-Millar
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Laura Ogle
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - George Mells
- Department of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Steven Flack
- Department of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Jonathan Badrock
- Department of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Richard Sandford
- Department of Human Genetics, University of Cambridge, Cambridge, United Kingdom
| | - John Kirby
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Jeremy Palmer
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Laura Jopson
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - John Brain
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Graham R Smith
- Bioinformatics Support Unit (BSU), Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Steve Rushton
- School of Natural and Environmental Science, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | | | - Rebecca Jones
- Liver Unit, St James' Hospital, Leeds, United Kingdom
| | - Simon Rushbrook
- Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | | | - Steve Ryder
- Queen's Medical Centre, Nottingham, United Kingdom
| | - Gideon Hirschfield
- Queen Elizabeth Hospital, Birmingham, United Kingdom
- Toronto Centre for Liver Disease, University of Toronto, Toronto, ON, Canada
| | - Jessica K Dyson
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
- Freeman Hospital, Newcastle-upon-Tyne, United Kingdom
| | - David E J Jones
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
- Freeman Hospital, Newcastle-upon-Tyne, United Kingdom
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Hardman G, Hogg R, Rushton S, Booth K, Fisher A, Dark J. Lung Transplantation and Utilisation Following Donation after Circulatory Death (DCD) in the UK. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1054] [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] Open
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9
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Ali J, Mann S, Smith F, Rushton S, Parameshwar J, Catarino P, Berman M. Recipient Age, Not Donor Age, Impacts on Long Term Outcomes Following Heart Transplantation: A 23-year National Analysis from the United Kingdom. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.631] [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] Open
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10
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Hardman G, Hogg R, Rushton S, Booth K, Fisher A, Dark J. Expanding Donor Age Criteria: The UK Experience. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.479] [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: 11/27/2022] Open
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11
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Al-Banaa I, Hawkins L, Hill SL, Lupton DJ, Jackson G, Sandilands EA, Bradberry SM, Thompson JP, Rushton S, Thomas SHL. Effect of the UK Psychoactive Substances Act 2016 on episodes of toxicity related to new psychoactive substances as reported to the National Poisons Information Service. A time series analysis. Int J Drug Policy 2020; 77:102672. [PMID: 32032867 DOI: 10.1016/j.drugpo.2020.102672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 06/12/2019] [Revised: 01/13/2020] [Accepted: 01/21/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND There have been recent increases in use of new psychoactive substances (NPS) associated with acute health harms including hospital presentations due to toxicity and increasing numbers of deaths. In response, the UK Government enacted generic legislation on 26th May 2016 (the Psychoactive Substances Act) making it an offence to produce, possess with intent to supply, supply, import or export, or possess within a custodial setting a psychoactive substance. We studied the impact of this Act on monthly frequency of enquiries made by health professionals to the UK National Poisons Information Service (NPIS) about NPS. We also studied five commonly used 'conventional' drugs of misuse that had been controlled prior to January 2009. METHOD Anonymised clinical enquiries to the NPIS and accesses to the poisons information database TOXBASE were reviewed retrospectively from January 2009 to December 2018 to ascertain the trends in reported toxicity for NPS, cocaine, heroin, cannabis, amphetamines and MDMA. Data were analysed using interrupted time series analysis with the date of the PSA used as an independent predictor. RESULTS Over the period of study there were 3,866 NPIS telephone enquiries and 79,271 TOXBASE user accesses made by UK health professionals concerning NPS. There were increases in monthly TOXBASE accesses (t = 7.408, P < 0.0001) and telephone enquiries (t = 4.74, P < 0.001) over the pre-specified period January 2009 to May 2016. Comparing the period after the PSA with that before, there were significant reductions in TOXBASE accesses (t = -3.327, P < 0.001) and telephone enquiries (t = -6.97, P < 0.001), although reductions started before May 2016. There were no significant changes for the five conventional drugs. There were significant reductions in telephone enquiries (t = -3.418, P < 0.001) and non-significant reductions in TOXBASE accesses (t = -1.713, P = 0.089) for NPS between June 2016 and December 2018. Increases in telephone enquiries for cocaine and reductions TOXBASE accesses for MDMA were also observed over that period. CONCLUSIONS There have been significant recent reductions in NPIS enquiry activity relating to NPS; although these began before enactment of the PSA in May 2016.
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Affiliation(s)
- I Al-Banaa
- Health Protection Research Unit for Chemical and Radiation Threats and Hazards, Newcastle University, Newcastle NE2 4HH, United Kingdom; College of Pharmacy, Department of Pharmacology and Toxicology, University of Mosul, Iraq.
| | - L Hawkins
- National Poisons Information Service (Newcastle Unit), Newcastle upon Tyne Hospitals NHS Foundation Trust, Wolfson Unit, Claremont Place, Newcastle upon Tyne, NE2 4HH, United Kingdom
| | - S L Hill
- National Poisons Information Service (Newcastle Unit), Newcastle upon Tyne Hospitals NHS Foundation Trust, Wolfson Unit, Claremont Place, Newcastle upon Tyne, NE2 4HH, United Kingdom
| | - D J Lupton
- National Poisons Information Service (Edinburgh Unit), Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh EH16 4SA, United Kingdom
| | - G Jackson
- National Poisons Information Service (Edinburgh Unit), Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh EH16 4SA, United Kingdom
| | - E A Sandilands
- National Poisons Information Service (Edinburgh Unit), Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh EH16 4SA, United Kingdom
| | - S M Bradberry
- National Poisons Information Service (Birmingham Unit), City Hospital, Dudley Road, Birmingham B18 7QH, United Kingdom
| | - J P Thompson
- National Poisons Information Service, Cardiff Unit, University Hospital Llandough, Penlan Road, Penarth, Vale of Glamorgan CF64 2XX, United Kingdom
| | - S Rushton
- School of Natural and Environmental Sciences, Newcastle University, Newcastle NE2 4HH, United Kingdom
| | - S H L Thomas
- Health Protection Research Unit for Chemical and Radiation Threats and Hazards, Newcastle University, Newcastle NE2 4HH, United Kingdom
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12
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Singh SA, De SD, Rushton S, Banner N, Berry C, Al-Attar N. Survival after Primary Graft Dysfunction in Heart Transplantation: Outcomes of the National UK Data. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.450] [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: 10/27/2022] Open
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13
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Page A, Wong E, Rushton S, Mehew J, Berman M, Tsui S. Changing Trends in Acceptance Criteria for Cardiac Donors: 15 Year UK Experience. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.444] [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] Open
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14
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Rushton S, Al-Aloul M, Carby M, Clark S, Thompson R, Parmar J, Tsui S. The Introduction of Urgent and Super-Urgent Lung Allocation Schemes in the United Kingdom. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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15
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Jayathilake PG, Jana S, Rushton S, Swailes D, Bridgens B, Curtis T, Chen J. Extracellular Polymeric Substance Production and Aggregated Bacteria Colonization Influence the Competition of Microbes in Biofilms. Front Microbiol 2017; 8:1865. [PMID: 29021783 PMCID: PMC5623813 DOI: 10.3389/fmicb.2017.01865] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 09/12/2017] [Indexed: 11/25/2022] Open
Abstract
The production of extracellular polymeric substance (EPS) is important for the survival of biofilms. However, EPS production is costly for bacteria and the bacterial strains that produce EPS (EPS+) grow in the same environment as non-producers (EPS-) leading to competition between these strains for nutrients and space. The outcome of this competition is likely to be dependent on factors such as initial attachment, EPS production rate, ambient nutrient levels and quorum sensing. We use an Individual-based Model (IbM) to study the competition between EPS+ and EPS- strains by varying the nature of initial colonizers which can either be in the form of single cells or multicellular aggregates. The microbes with EPS+ characteristics obtain a competitive advantage if they initially colonize the surface as smaller aggregates and are widely spread-out between the cells of EPS-, when both are deposited on the substratum. Furthermore, the results show that quorum sensing-regulated EPS production may significantly reduce the fitness of EPS producers when they initially deposit as aggregates. The results provide insights into how the distribution of bacterial aggregates during initial colonization could be a deciding factor in the competition among different strains in biofilms.
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Affiliation(s)
| | - Saikat Jana
- School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Steve Rushton
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - David Swailes
- School of Mathematics, Statistics and Physics, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ben Bridgens
- School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Tom Curtis
- Centre for Synthetic Biology and the Bioeconomy, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Jinju Chen
- School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
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16
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Jayathilake PG, Gupta P, Li B, Madsen C, Oyebamiji O, González-Cabaleiro R, Rushton S, Bridgens B, Swailes D, Allen B, McGough AS, Zuliani P, Ofiteru ID, Wilkinson D, Chen J, Curtis T. A mechanistic Individual-based Model of microbial communities. PLoS One 2017; 12:e0181965. [PMID: 28771505 PMCID: PMC5542553 DOI: 10.1371/journal.pone.0181965] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 07/10/2017] [Indexed: 01/12/2023] Open
Abstract
Accurate predictive modelling of the growth of microbial communities requires the credible representation of the interactions of biological, chemical and mechanical processes. However, although biological and chemical processes are represented in a number of Individual-based Models (IbMs) the interaction of growth and mechanics is limited. Conversely, there are mechanically sophisticated IbMs with only elementary biology and chemistry. This study focuses on addressing these limitations by developing a flexible IbM that can robustly combine the biological, chemical and physical processes that dictate the emergent properties of a wide range of bacterial communities. This IbM is developed by creating a microbiological adaptation of the open source Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). This innovation should provide the basis for “bottom up” prediction of the emergent behaviour of entire microbial systems. In the model presented here, bacterial growth, division, decay, mechanical contact among bacterial cells, and adhesion between the bacteria and extracellular polymeric substances are incorporated. In addition, fluid-bacteria interaction is implemented to simulate biofilm deformation and erosion. The model predicts that the surface morphology of biofilms becomes smoother with increased nutrient concentration, which agrees well with previous literature. In addition, the results show that increased shear rate results in smoother and more compact biofilms. The model can also predict shear rate dependent biofilm deformation, erosion, streamer formation and breakup.
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Affiliation(s)
- Pahala Gedara Jayathilake
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
- * E-mail: (PGJ); (SR); (TC); (JC)
| | - Prashant Gupta
- School of Biology, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Bowen Li
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Curtis Madsen
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Oluwole Oyebamiji
- School of Mathematics & Statistics, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Rebeca González-Cabaleiro
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Steve Rushton
- School of Biology, Newcastle University, Newcastle upon Tyne, United Kingdom
- * E-mail: (PGJ); (SR); (TC); (JC)
| | - Ben Bridgens
- School of Civil Engineering & Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - David Swailes
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ben Allen
- School of Civil Engineering & Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - A. Stephen McGough
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Paolo Zuliani
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Irina Dana Ofiteru
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Darren Wilkinson
- School of Mathematics & Statistics, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Jinju Chen
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
- * E-mail: (PGJ); (SR); (TC); (JC)
| | - Tom Curtis
- School of Civil Engineering & Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
- * E-mail: (PGJ); (SR); (TC); (JC)
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Singh SA, Banner N, Rushton S, Al-Attar N. The Incidence and Outcome of Primary Graft Dysfunction After Adult Heart Transplantation in the United Kingdom. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.384] [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: 10/19/2022] Open
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Jayathilake PG, Gupta P, Li B, Madsen C, Oyebamiji O, González-Cabaleiro R, Rushton S, Bridgens B, Swailes D, Allen B, McGough AS, Zuliani P, Ofiteru ID, Wilkinson D, Chen J, Curtis T. A mechanistic Individual-based Model of microbial communities. PLoS One 2017. [PMID: 28771505 DOI: 10.1371/jou0181965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
Accurate predictive modelling of the growth of microbial communities requires the credible representation of the interactions of biological, chemical and mechanical processes. However, although biological and chemical processes are represented in a number of Individual-based Models (IbMs) the interaction of growth and mechanics is limited. Conversely, there are mechanically sophisticated IbMs with only elementary biology and chemistry. This study focuses on addressing these limitations by developing a flexible IbM that can robustly combine the biological, chemical and physical processes that dictate the emergent properties of a wide range of bacterial communities. This IbM is developed by creating a microbiological adaptation of the open source Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). This innovation should provide the basis for "bottom up" prediction of the emergent behaviour of entire microbial systems. In the model presented here, bacterial growth, division, decay, mechanical contact among bacterial cells, and adhesion between the bacteria and extracellular polymeric substances are incorporated. In addition, fluid-bacteria interaction is implemented to simulate biofilm deformation and erosion. The model predicts that the surface morphology of biofilms becomes smoother with increased nutrient concentration, which agrees well with previous literature. In addition, the results show that increased shear rate results in smoother and more compact biofilms. The model can also predict shear rate dependent biofilm deformation, erosion, streamer formation and breakup.
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Affiliation(s)
- Pahala Gedara Jayathilake
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Prashant Gupta
- School of Biology, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Bowen Li
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Curtis Madsen
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Oluwole Oyebamiji
- School of Mathematics & Statistics, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Rebeca González-Cabaleiro
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Steve Rushton
- School of Biology, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ben Bridgens
- School of Civil Engineering & Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - David Swailes
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Ben Allen
- School of Civil Engineering & Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - A Stephen McGough
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Paolo Zuliani
- School of Computing Science, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Irina Dana Ofiteru
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Darren Wilkinson
- School of Mathematics & Statistics, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Jinju Chen
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Tom Curtis
- School of Civil Engineering & Geosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
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Bell R, Glinianaia SV, van der Waal Z, Close A, Rushton S, Moloney E, Vale L, Milne E, Jones S, Hamilton S, Shucksmith J, Araujo-Soares V, Willmore M, White M. OP56 Evaluation of the implementation of a complex intervention (babyClear©) to promote increased smoking cessation rates among pregnant women. Br J Soc Med 2016. [DOI: 10.1136/jech-2016-208064.56] [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: 11/03/2022]
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20
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Habes I, Rushton S, Johnston SJ, Sokunbi MO, Barawi K, Brosnan M, Daly T, Ihssen N, Linden DEJ. fMRI neurofeedback of higher visual areas and perceptual biases. Neuropsychologia 2016; 85:208-15. [PMID: 27020139 PMCID: PMC4863521 DOI: 10.1016/j.neuropsychologia.2016.03.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 11/03/2022]
Abstract
The self-regulation of brain activation via neurofeedback training offers a method to study the relationship between brain areas and perception in a more direct manner than the conventional mapping of brain responses to different types of stimuli. The current proof-of-concept study aimed to demonstrate that healthy volunteers can self-regulate activity in the parahippocampal place area (PPA) over the fusiform face area (FFA). Both areas are involved in higher order visual processing and are activated during the imagery of scenes and faces respectively. Participants (N=9) were required to upregulate PPA relative to FFA activity, and all succeeded at the task, with imagery of scenes being the most commonly reported mental strategy. A control group (N=8) underwent the same imagery and testing procedure, albeit without neurofeedback, in a mock MR scanner to account for any non-specific training effects. The upregulation of PPA activity occurred concurrently with activation of prefrontal and parietal areas, which have been associated with ideation and mental image generation. We tested whether successful upregulation of the PPA relative to FFA had consequences on perception by assessing bistable perception of faces and houses in a binocular rivalry task (before and after the scanning sessions) and categorisation of faces and scenes presented in transparent composite images (during scanning, interleaved with the self-regulation blocks). Contrary to our expectations, upregulation of the PPA did not alter the duration of face or house perception in the rivalry task and response speed and accuracy in the categorisation task. This conclusion was supported by the results of another control experiment (N=10 healthy participants) that involved intensive exposure to category-specific stimuli and did not show any behavioural or perceptual changes. We conclude that differential self-regulation of higher visual areas can be achieved, but that perceptual biases under conditions of stimulus rivalry are relatively robust against such internal modulation of localised brain activity. This study sets the basis for future investigations of perceptual and behavioural consequences of localised self-regulation of neural activity. Healthy participants trained differential self-regulation of higher visual areas. They were instructed to up-regulate the PPA whilst keeping FFA activity down. Up-regulation of the PPA was accompanied by frontal and parietal activation. No shift in perceptual biases in scene/face perceptual rivalry tasks was observed.
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Affiliation(s)
- I Habes
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK
| | - S Rushton
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK
| | - S J Johnston
- School of Human and Health Sciences, Department of Psychology, Swansea University, Swansea SA2 8PP, UK
| | - M O Sokunbi
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK; Cognitive Neuroscience Sector, International School for Advanced Studies (SISSA), 34136 Trieste, Italy
| | - K Barawi
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK
| | - M Brosnan
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK; Trinity College Institute of Neuroscience and School of Psychology, Trinity College Dublin, Dublin 2, Ireland
| | - T Daly
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff CF24 4XN, UK
| | - N Ihssen
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK
| | - D E J Linden
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, UK; Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff CF24 4XN, UK.
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Loke L, Ward R, Shapiro J, Lewis C, Rushton S, Rendel P. 514P eviQ Cancer Treatments Online (www.eviQ.org.au)- Use in Asia. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv535.09] [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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22
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Kleim BD, Malviya A, Rushton S, Bardgett M, Deehan DJ. Understanding the patient-reported factors determining time taken to return to work after hip and knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 2015; 23:3646-52. [PMID: 25193567 DOI: 10.1007/s00167-014-3265-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE The key factors underscoring safe and early return to work after hip (THA) or knee (TKA) arthroplasty are poorly defined. The aim of this study was to evaluate the effect of patient-reported variables upon time taken to return to work after THA or TKA in a working population. METHODS Questionnaires asking about employment history, education, general health and experiences of returning to work after THA and TKA were administered by post and at outpatients' clinic. RESULTS One hundred and two from 272 eligible patients, of whom 52 had undergone THA and 50 TKA, were recruited sequentially. In total, 83 patients were employed pre-operatively and 80 returned to work at median 12 (2-64) weeks. Those in more manual occupations (p = 0.001) without pre-operative sick leave due to their hip or knee arthritis (p = 0.016) and a higher level of qualification (p = 0.041) returned to employment significantly quicker than the rest of the cohort. THA patients report a greater improvement in terms of performance at work (63 vs 44 %, p = 0.007) and job prospects (50 vs 36 %, p = 0.046) as compared with patients after TKA. CONCLUSIONS Patients with pre-operative sick leave, basic or no qualifications and more physically demanding occupations take longer to return to work. Operating patients before their arthritis forces them to become unemployed would improve their chances to return to work. Hip arthroplasty patients have a greater perceived benefit in terms of performance at work and job prospect. A more tailored return to work time predictions to allow a faster return to work and avoid frustration. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- B D Kleim
- Newcastle University, Framlington Place, Newcastle upon Tyne, NE1 7RU, UK
| | - A Malviya
- Newcastle University, Framlington Place, Newcastle upon Tyne, NE1 7RU, UK. .,Wansbeck General Hospital, Northumbria Healthcare NHS Foundation Trust, Woodhorn Lane, Ashington, NE63 9JJ, UK.
| | - S Rushton
- Newcastle University, Framlington Place, Newcastle upon Tyne, NE1 7RU, UK
| | - M Bardgett
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Road, Newcastle upon Tyne, NE7 7DN, UK
| | - D J Deehan
- Newcastle University, Framlington Place, Newcastle upon Tyne, NE1 7RU, UK.,Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Road, Newcastle upon Tyne, NE7 7DN, UK
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McNally R, Gomez Pozo B, Rushton S, Pearce M. 1034 Spatial epidemiology of lung cancer mortality in Andalucýa, Spain: Geographical heterogeneity and risk-factors assessment. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30460-9] [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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24
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Ghosh KM, Hunt N, Blain A, Athwal KK, Longstaff L, Amis AA, Rushton S, Deehan DJ. Isolated popliteus tendon injury does not lead to abnormal laxity in posterior-stabilised total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 2015; 23:1763-9. [PMID: 25552404 DOI: 10.1007/s00167-014-3488-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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] [Received: 04/14/2014] [Accepted: 12/12/2014] [Indexed: 01/14/2023]
Abstract
PURPOSE The popliteus tendon is crucial to postero-lateral stability and prone to iatrogenic injury intra-operatively. Its role in the stability of the replaced knee remains contentious. The aim of this study was to use computer navigation to quantify the effect of popliteus sectioning on the 'envelope of laxity' (EoL) offered by a posterior-stabilised (PS) total knee arthroplasty (TKA) and compare with that of the native knee. METHODS Loaded cadaveric legs were mounted on a purpose built rig. EoL was measured in 3 degrees of freedom using computer navigation. Knees were subjectively stressed in varus/valgus, internal/external rotation and anterior draw. This was performed preoperatively, during TKA and after sectioning of the popliteus tendon. Real-time data were recorded at 0°, 30°, 60° and 90° of flexion as the operating surgeon stressed the knee in 3 degrees of freedom to its subjective endpoint. Mixed-effect modelling was used to quantify the effects of intervention on degree of laxity. RESULTS In all conditions, there was an increase in laxity with knee flexion. Insertion of a PS TKA resulted in increased constraint, particularly in rotation. Sectioning of the popliteus did not result in a significant increase in knee laxity to 90º of knee flexion. However, at deeper flexion angles, tendon sectioning overcame the constraints of the implant resulting in a significant increase in rotatory and varus/valgus laxity towards the native condition. CONCLUSION These findings support the view that certain current designs of PS knee replacement can constrain the knee in flexion in the absence of postero-lateral deficiency. For this implant, isolated sectioning of the popliteus tendon did not substantially generate abnormal knee laxity.
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Affiliation(s)
- K M Ghosh
- Freeman Hospital, High Heaton, Newcastle upon Tyne, NE7 7DN, UK,
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25
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Johnson C, Rushton S, Tieman J, Currow D, Aranda S. Reclaiming the midnight hours: up-to-date evidence in just one click. Eur J Cancer Care (Engl) 2014; 23:760-1. [PMID: 25352465 DOI: 10.1111/ecc.12265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2014] [Indexed: 12/01/2022]
Affiliation(s)
- C Johnson
- Cancer Services and Information, Cancer Institute NSW, Sydney, New South Wales, Australia
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Ghosh KM, Blain AP, Longstaff L, Rushton S, Amis AA, Deehan DJ. Can we define envelope of laxity during navigated knee arthroplasty? Knee Surg Sports Traumatol Arthrosc 2014; 22:1736-43. [PMID: 23832172 DOI: 10.1007/s00167-013-2574-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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] [Received: 12/13/2012] [Accepted: 06/10/2013] [Indexed: 11/29/2022]
Abstract
PURPOSE Functional outcomes after knee arthroplasty (TKA) remain poor. The ability to restore the soft tissue envelope intraoperatively may improve such outcomes. The aim of this study was to extend the scope of computer navigation as a tool to quantifying the envelope of laxity during subjective stress testing preoperatively and to quantify the effects of knee replacement and how it changes as a result of ligamentous failure. METHODS Loaded cadaveric legs were mounted on a purpose-built rig. Envelope of laxity was measured in 3 degrees of freedom using computer navigation. Knees were subjectively stressed in varus/valgus, internal/external rotation and anterior draw. This was performed preoperatively, during TKA and after sequential sectioning of ligaments. Real-time data were recorded at 0°, 30°, 60° and 90° of flexion. Mixed effect modelling was used to quantify the effects of intervention on degree of laxity. RESULTS In all cases, there was an increase in laxity with increasing flexion or ligament sectioning. Operator and movement cycle had no effect. Insertion of a TKA showed increased stability within the joint, especially in internal/external rotation and anterior drawer. Once the PCL and popliteus were cut, the implant only maintained some rotatory stability; thereafter, the soft tissue envelope failed. CONCLUSIONS This work has shown a novel way by which computer navigation can be used to analyse soft tissue behaviour during TKA beyond the coronal plane and throughout range of motion. Despite subjective stress testing, our results show reproducible patterns of soft tissue behaviour-in particular a wide range of mid-flexion excursion. It also quantifies the limits within which a cruciate-retaining TKR can maintain knee stability. This functionality may guide the surgeon in identifying and/or preventing soft tissue imbalances intra-operatively, improving functional results.
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Affiliation(s)
- K M Ghosh
- Newcastle Surgical Training Centre, Freeman Hospital, Freeman Rd., Newcastle Upon Tyne, NE7 7DN, UK,
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Bettridge JM, Lynch SE, Brena MC, Melese K, Dessie T, Terfa ZG, Desta TT, Rushton S, Hanotte O, Kaiser P, Wigley P, Christley RM. Infection-interactions in Ethiopian village chickens. Prev Vet Med 2014; 117:358-66. [PMID: 25085600 PMCID: PMC4235779 DOI: 10.1016/j.prevetmed.2014.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 06/12/2014] [Accepted: 07/03/2014] [Indexed: 11/19/2022]
Abstract
Chickens raised under village production systems are exposed to a wide variety of pathogens, and current or previous infections may affect their susceptibility to further infections with another parasite, and/or can alter the manifestation of each infection. It is possible that co-infections may be as important as environmental risk factors. However, in cross-sectional studies, where the timing of infection is unknown, apparent associations between infections may be observed due to parasites sharing common risk factors. This study measured antibody titres to 3 viral (Newcastle disease, Marek's disease and infectious bursal disease) and 2 bacterial (Pasteurella multocida and Salmonella) diseases, and the infection prevalence of 3 families of endo- and ecto-parasites (Ascaridida, Eimeria and lice) in 1056 village chickens from two geographically distinct populations in Ethiopia. Samples were collected during 4 cross-sectional surveys, each approximately 6 months apart. Constrained ordination, a technique for analysis of ecological community data, was used to explore this complex dataset and enabled potential relationships to be uncovered and tested despite the different measurements used for the different parasites. It was found that only a small proportion of variation in the data could be explained by the risk factors measured. Very few birds (9/1280) were found to be seropositive to Newcastle disease. Positive relationships were identified between Pasteurella and Salmonella titres; and between Marek's disease and parasitic infections, and these two groups of diseases were correlated with females and males, respectively. This may suggest differences in the way that the immune systems of male and female chickens interact with these parasites. In conclusion, we find that a number of infectious pathogens and their interactions are likely to impact village chicken health and production. Control of these infections is likely to be of importance in future development planning.
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Affiliation(s)
- J M Bettridge
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; International Livestock Research Institute, Addis Ababa, Ethiopia.
| | - S E Lynch
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; International Livestock Research Institute, Addis Ababa, Ethiopia
| | - M C Brena
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom
| | - K Melese
- Debre Zeit Agricultural Research Centre, Ethiopian Institute for Agriculture Research, Debre Zeit, Ethiopia
| | - T Dessie
- International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Z G Terfa
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; International Livestock Research Institute, Addis Ababa, Ethiopia
| | - T T Desta
- International Livestock Research Institute, Addis Ababa, Ethiopia; Centre for Genetics and Genomics, School of Biology, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - S Rushton
- School of Biology, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
| | - O Hanotte
- Centre for Genetics and Genomics, School of Biology, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
| | - P Kaiser
- The Roslin Institute and Royal (Dick) School of Veterinary Science, University of Edinburgh, Midlothian EH25 9RG, United Kingdom
| | - P Wigley
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom
| | - R M Christley
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Liverpool CH64 7TE, United Kingdom; NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, Liverpool, L69 7BE, United Kingdom
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Baker PN, Rushton S, Jameson SS, Reed M, Gregg P, Deehan DJ. Patient satisfaction with total knee replacement cannot be predicted from pre-operative variables alone: A cohort study from the National Joint Registry for England and Wales. Bone Joint J 2013; 95-B:1359-65. [PMID: 24078532 DOI: 10.1302/0301-620x.95b10.32281] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Pre-operative variables are increasingly being used to determine eligibility for total knee replacement (TKR). This study was undertaken to evaluate the relationships, interactions and predictive capacity of variables available pre- and post-operatively on patient satisfaction following TKR. Using nationally collected patient reported outcome measures and data from the National Joint Registry for England and Wales, we identified 22 798 patients who underwent TKR for osteoarthritis between August 2008 and September 2010. The ability of specific covariates to predict satisfaction was assessed using ordinal logistic regression and structural equational modelling. Only 4959 (22%) of 22 278 patients rated the results of their TKR as 'excellent', despite the majority (71%, n = 15 882) perceiving their knee symptoms to be much improved. The strongest predictors of satisfaction were post-operative variables. Satisfaction was significantly and positively related to the perception of symptom improvement (operative success) and the post-operative EuroQol-5D score. While also significant within the models pre-operative variables were less important and had a minimal influence upon post-operative satisfaction. The most robust predictions of satisfaction occurred only when both pre- and post-operative variables were considered together. These findings question the appropriateness of restricting access to care based on arbitrary pre-operative thresholds as these factors have little bearing on post-operative satisfaction.
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Affiliation(s)
- P N Baker
- Newcastle University, Institute of Cellular Medicine, Newcastle upon Tyne NE1 7RU, UK
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30
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Foulkes A, Rushton S, Warren P. Effects of flow field noise and density on optic flow parsing. J Vis 2012. [DOI: 10.1167/12.9.235] [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: 11/24/2022] Open
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31
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Rushton S, Warren P. Successful detection of a size change during self-movement. J Vis 2011. [DOI: 10.1167/11.11.925] [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: 11/24/2022] Open
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32
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Brandwood T, Rushton S, Charron C. Exposure to displaced optic flow results in adaptation of visual straight ahead. J Vis 2010. [DOI: 10.1167/9.8.825] [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: 11/24/2022] Open
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Herlihey T, Rushton S, Charron C. Adaptation of visual straight ahead requires an unrestricted field of view. J Vis 2010. [DOI: 10.1167/10.7.1048] [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: 11/24/2022] Open
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Rushton S, Warren P. Detecting object movement during self-movement: The importance of local motion contrast, position change and optic flow. J Vis 2010. [DOI: 10.1167/9.8.635] [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: 11/24/2022] Open
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Abstract
Congenital hepatic fibrosis is a disorder of biliary system development histologically characterized by diffuse periportal to bridging fibrosis with numerous small often-irregular bile ducts and reduction in the number of portal vein branches. The condition results from abnormal development of the ductal plate, the embryonic precursor to the interlobular bile ducts. It has rarely been reported in veterinary species, and it has never been reported in dogs. This article describes 5 cases of a ductal plate malformation in dogs consistent with congenital hepatic fibrosis. On light microscopy, all 5 livers had severe bridging fibrosis with a marked increase in the number of small bile ducts, which often had irregular, dilated profiles reminiscent of the developing ductal plate. In addition, 80% (4 of 5) of cases lacked typical portal vein profiles. Cytokeratin 7 and proliferating cell nuclear antigen immunohistochemistry was performed on the 3 cases for which paraffin-embedded tissue was available. The bile duct profiles were strongly positive for cytokeratin 7 in all 3 cases, and they were negative for proliferating cell nuclear antigen or only had rare positive cells. All 5 dogs presented with clinical signs of portal hypertension. Congenital hepatic fibrosis should be considered in the differential diagnosis in young dogs that present with portal hypertension and lesions that may have been interpreted as bridging biliary hyperplasia or extrahepatic biliary obstruction.
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Affiliation(s)
- D L Brown
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University Raleigh, NC, USA.
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Jarvstad A, Hahn U, Warren P, Rushton S. Exploring the limits of optimal motor-planning. J Vis 2010. [DOI: 10.1167/9.8.1107] [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: 11/24/2022] Open
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Rushton S, Sumner P, Singh K. The role of hMST in the perception of object movement during self-movement. J Vis 2010. [DOI: 10.1167/8.6.126] [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: 11/24/2022] Open
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Pearce MS, Glinianaia SV, Rankin J, Rushton S, Charlton M, Parker L, Pless-Mulloli T. No association between ambient particulate matter exposure during pregnancy and stillbirth risk in the north of England, 1962-1992. Environ Res 2010; 110:118-22. [PMID: 19863953 PMCID: PMC2832733 DOI: 10.1016/j.envres.2009.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Revised: 10/01/2009] [Accepted: 10/02/2009] [Indexed: 05/22/2023]
Abstract
OBJECTIVES Research evidence suggests that exposure to ambient air pollutants can adversely affect the growth and development of the foetus and infant survival. Much less is known regarding the potential for an association between black smoke air pollution and stillbirth risk. This potential association was examined using data from the historical cohort UK Particulate Matter and Perinatal Events Research (PAMPER) study. METHODS Using data from paper-based neonatal records from the two major maternity hospitals in Newcastle upon Tyne (UK), a birth record database of all singletons born during 1961-1992 to mothers resident in the city was constructed. Weekly black smoke levels were obtained from routine data recorded at 20 air pollution monitoring stations over the study period. A two-stage statistical modelling strategy was used, incorporating temporally and spatially varying covariates to estimate black smoke exposure during each trimester and for the whole pregnancy period for each individual pregnancy. Conditional logistic regression models, with stratification on year of birth, were used to assess potential associations between black smoke exposures in pregnancy and stillbirth risk. RESULTS The PAMPER database consists of 90,537 births, between 1962 and 1992, with complete gestational age and residential address information, of which 812 were stillborn. There was no association between black smoke exposures in any trimester or across whole pregnancy and risk of stillbirth. Adjustment for potential confounders did not alter these results. CONCLUSIONS While black smoke in pregnancy is likely to be related to other pregnancy outcomes, our findings do not suggest that black smoke air pollution exposure during pregnancy increases the risk of stillbirth.
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Affiliation(s)
- M S Pearce
- Institute of Health and Society, Newcastle University, Sir James Spence Institute, Royal Victoria Infirmary, Newcastle upon Tyne, NE1 4LP, UK.
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Atherton KM, Williams FM, Egea González FJ, Glass R, Rushton S, Blain PG, Mutch E. DNA damage in horticultural farmers: a pilot study showing an association with organophosphate pesticide exposure. Biomarkers 2009; 14:443-51. [DOI: 10.3109/13547500903137265] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Atherton KM, Williams FM, González FJE, Glass R, Rushton S, Blain PG, Mutch E. DNA damage in horticultural farmers: a pilot study showing an association with organophosphate pesticide exposure. Biomarkers 2009. [DOI: 10.1080/13547500903137265] [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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Allen J, Shirley M, Rushton S, Kohli A, Mesbahi E. Predicting gene co-expression from CIS-regulatory regions. BMC Syst Biol 2007. [DOI: 10.1186/1752-0509-1-s1-p56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
The associations between habitat and other factors that lead to the risk of bovine tuberculosis (bTB) in diary cattle were examined in an unmatched case-control study. Data from 60 herds with recent history of bTB and 60 controls were analysed using logistic regression. The predictors included farmland habitat, topography, indices of badger density and herd size. Information-theoretic approaches were used to identify those predictor variables explaining the greatest variation in cattle herd bTB breakdowns. Reduced risk of bTB was associated with the management of farmland in ways favourable to wildlife conservation, as encouraged by recent (2005) European Common Agricultural Policy reforms.
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Affiliation(s)
- F Mathews
- University of Oxford, Wildlife Conservation Research Unit, Tubney House, Abingdon Road, Tubney OX13 5QL, UK.
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Angold PG, Sadler JP, Hill MO, Pullin A, Rushton S, Austin K, Small E, Wood B, Wadsworth R, Sanderson R, Thompson K. Biodiversity in urban habitat patches. Sci Total Environ 2006; 360:196-204. [PMID: 16297440 DOI: 10.1016/j.scitotenv.2005.08.035] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We examined the biodiversity of urban habitats in Birmingham (England) using a combination of field surveys of plants and carabid beetles, genetic studies of four species of butterflies, modelling the anthropochorous nature of the floral communities and spatially explicit modelling of selected mammal species. The aim of the project was to: (i) understand the ecological characteristics of the biota of cities model, (ii) examine the effects of habitat fragment size and connectivity upon the ecological diversity and individual species distributions, (iii) predict biodiversity in cities, and (iv) analyse the extent to which the flora and fauna utilise the 'urban greenways' both as wildlife corridors and as habitats in their own right. The results suggest that cities provide habitats for rich and diverse range of plants and animals, which occur sometimes in unlikely recombinant communities. The studies on carabids and butterflies illustrated the relative importance of habitat quality on individual sites as opposed to site location within the conurbation. This suggests that dispersal for most of our urban species is not a limiting factor in population persistence, although elements of the woodland carabid fauna did appear to have some geographical structuring. Theoretical models suggested that dormice and water voles may depend on linear habitats for dispersal. The models also indicated that other groups, such as small and medium sized mammals, may use corridors, although field-based research did not provide any evidence to suggest that plants or invertebrates use urban greenways for dispersal. This finding indicates the importance of identifying a target species or group of species for urban greenways intended as dispersal routeways rather than as habitat in their own right. Their importance for most groups is rather that greenways provide a chain of different habitats permeating the urban environment. We suggest that planners can have a positive impact on urban biodiversity by slowing the pace of redevelopment and by not hurrying to tidy up and redevelop brownfield sites.
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Bonesi L, Rushton S, Macdonald D. The combined effect of environmental factors and neighbouring populations on the distribution and abundance of Arvicola terrestris.
An approach using rule-based models. OIKOS 2002. [DOI: 10.1034/j.1600-0706.2002.990202.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
The C-type carbohydrate-recognition domains of E-selectin and rat serum mannose-binding protein have similar structures. Selectin/mannose-binding protein chimeras created by transfer of key sequences from E-selectin into mannose-binding protein have previously been shown to bind the selectin ligand sialyl-Lewis(X) through a Ca(2+)-dependent subsite, common to many C-type lectins, and an accessory site containing positively charged amino acid residues. Further characterization of these chimeras as well as analysis of novel constructs containing additional regions of E-selectin demonstrate that selectin-like interaction with sialyl-Lewis(X) can be faithfully reproduced even though structural evidence indicates that the mechanisms of binding to E-selectin and the chimeras are different. Selectin-like binding to the nonfucosylated sulfatide and sulfoglucuronyl glycolipids can also be reproduced with selectin/mannose-binding protein chimeras that contain the two subsites involved in sialyl-Lewis(X) binding. These results indicate that binding of structurally distinct anionic glycans to C-type carbohydrate-recognition domains can be mediated by the Ca(2+)-dependent subsite in combination with a positively charged region that forms an ionic strength-sensitive subsite.
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Affiliation(s)
- S Bouyain
- Glycobiology Institute, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK
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Abstract
Landscape management practices that alter the degree of habitat fragmentation can significantly affect the genetic structure of animal populations. British red squirrels use "stepping stone" patches of habitat to move considerable distances through a fragmented habitat. Over the past few decades, the planting of a large conifer forest has connected groups of forest fragments in the north of England with those in southern Scotland. This "defragmentation" of the landscape has resulted in substantial genetic mixing of Scottish and Cumbrian genes in squirrel populations up to 100 kilometers from the site of the new forest. These results have implications for the conservation management of animal and plant species in fragmented landscapes such as those found in Britain.
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Affiliation(s)
- M L Hale
- Department of Agricultural and Environmental Science, Centre for Life Science Modelling, University of Newcastle, Newcastle-upon-Tyne, NE1 7RU, UK.
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Abstract
Virtual Reality (VR) technology is a relatively new application to rehabilitation medicine, yet it offers considerable potential to achieve significant successes in assessment, treatment and improved outcome, thereby increasing our knowledge of neuroplasticity. The capabilities of VR are especially evident in neurological rehabilitation, where cognitive and behavioural problems often interact with physical impairments to reduce the overall level of functioning and interaction. The need for effective interventions in neurological rehabilitation demands communication and collaboration between disciplines. This paper presents some of the current areas of the clinical applications of VR, emphasising the link between experimental evidence on recovery after brain damage and the clinical problems encountered in a ward setting.
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Affiliation(s)
- D A Johnson
- Department of Clinical Psychology, Astley Ainslie Hospital, Edinburgh.
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