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Douglas EJ, Gammal J, Needham HR, Stephenson F, Townsend M, Pilditch CA, Lohrer AM. Combining Techniques to Conceptualise Denitrification Hot Spots and Hot Moments in Estuaries. Ecosystems 2022. [DOI: 10.1007/s10021-021-00732-7] [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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Kaufmann B, Boulle P, Berthou F, Fournier M, Beran D, Ciglenecki I, Townsend M, Schmidt G, Shah M, Cristofani S, Cavailler P, Foti M, Scapozza L. Heat-stability study of various insulin types in tropical temperature conditions: New insights towards improving diabetes care. PLoS One 2021; 16:e0245372. [PMID: 33534816 PMCID: PMC7857579 DOI: 10.1371/journal.pone.0245372] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 12/29/2020] [Indexed: 01/08/2023] Open
Abstract
Strict storage recommendations for insulin are difficult to follow in hot tropical regions and even more challenging in conflict and humanitarian emergency settings, adding an extra burden to the management of people with diabetes. According to pharmacopeia unopened insulin vials must be stored in a refrigerator (2-8°C), while storage at ambient temperature (25-30°C) is usually permitted for the 4-week usage period during treatment. In the present work we address a critical question towards improving diabetes care in resource poor settings, namely whether insulin is stable and retains biological activity in tropical temperatures during a 4-week treatment period. To answer this question, temperature fluctuations were measured in Dagahaley refugee camp (Northern Kenya) using log tag recorders. Oscillating temperatures between 25 and 37°C were observed. Insulin heat stability was assessed under these specific temperatures which were precisely reproduced in the laboratory. Different commercialized formulations of insulin were quantified weekly by high performance liquid chromatography and the results showed perfect conformity to pharmacopeia guidelines, thus confirming stability over the assessment period (four weeks). Monitoring the 3D-structure of the tested insulin by circular dichroism confirmed that insulin monomer conformation did not undergo significant modifications. The measure of insulin efficiency on insulin receptor (IR) and Akt phosphorylation in hepatic cells indicated that insulin bioactivity of the samples stored at oscillating temperature during the usage period is identical to that of the samples maintained at 2-8°C. Taken together, these results indicate that insulin can be stored at such oscillating ambient temperatures for the usual four-week period of use. This enables the barrier of cold storage during use to be removed, thereby opening up the perspective for easier management of diabetes in humanitarian contexts and resource poor settings.
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Affiliation(s)
- Beatrice Kaufmann
- Pharmaceutical Biochemistry, School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
| | | | - Flavien Berthou
- Faculty of Medicine, Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Margot Fournier
- Faculty of Medicine, Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - David Beran
- Division of Tropical and Humanitarian Medicine, University of Geneva and Geneva University Hospitals, Geneva, Switzerland
| | - Iza Ciglenecki
- Médecins Sans Frontières Switzerland, Geneva, Switzerland
| | | | | | - Maya Shah
- Médecins Sans Frontières Switzerland, Geneva, Switzerland
| | | | | | - Michelangelo Foti
- Faculty of Medicine, Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Leonardo Scapozza
- Pharmaceutical Biochemistry, School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
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Keating N, Tuakli E, Fornasari L, Townsend M, Conneally K. Physiotherapists can ́make every contact count́ to promote smoking cessation; a quality improvement project on a vascular ward. Physiotherapy 2020. [DOI: 10.1016/j.physio.2020.03.262] [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: 10/24/2022]
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Tait LW, Lohrer AM, Townsend M, Atalah J, Floerl O, Inglis GJ. Invasive ecosystem engineers threaten benthic nitrogen cycling by altering native infaunal and biofouling communities. Sci Rep 2020; 10:1581. [PMID: 32005953 PMCID: PMC6994685 DOI: 10.1038/s41598-020-58557-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/15/2020] [Indexed: 11/13/2022] Open
Abstract
Predicting the effects of invasive ecosystem engineering species in new bioregions has proved elusive. In part this is because separating biological effects from purely physical mechanisms has been little studied and yet could help predict potentially damaging bioinvasions. Here we tested the effects of a large bio-engineering fanworm Sabella spallanzanii (Sabella) versus worm-like structures (mimics) on gas and nutrient fluxes in a marine soft bottom sediment. Experimental plots of sediment in Hauraki Gulf (New Zealand) were used to test the hypothesis that ecosystem engineers negatively influence benthic ecosystem function through autogenic mechanisms, facilitating activity by biofouling organisms and competitive exclusion of native infauna. Enhanced physical structure associated with Sabella and mimics increased nitrogen fluxes, community metabolism and reduced denitrification from 23 μmol m−2 h−1 to zero at densities greater than 25 m2. Sabella plots on average had greater respiration (29%), NH4 release (33%), and greater NO3 release (52%) compared to mimics, suggesting allogenic (biological) mechanisms occur, but play a secondary role to autogenic (physical) mechanisms. The dominance of autogenic mechanisms indicates that bio-engineers are likely to cause significant impacts when established, regardless of fundamental differences in recipient regions or identity of the introduced bio-engineer. In the case of Sabella spallanzanii, compromised denitrification has the potential to tip the balance of net solute and gas exchanges and cause further ecological degradation in an already eutrophic system.
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Affiliation(s)
- L W Tait
- National Institute of Water and Atmospheric Research, 10 Kyle St, Riccarton, Christchurch, 8011, New Zealand.
| | - A M Lohrer
- National Institute of Water and Atmospheric Research, 10 Silverdale Road Hillcrest, Hillcrest, Hamilton, 3216, New Zealand
| | - M Townsend
- National Institute of Water and Atmospheric Research, 10 Silverdale Road Hillcrest, Hillcrest, Hamilton, 3216, New Zealand.,Waikato Regional Council, 401 Grey St, Hamilton East, Hamilton, 3216, New Zealand
| | - J Atalah
- Cawthron Institute 98 Halifax St E, The Wood, Nelson, 7010, New Zealand
| | - O Floerl
- Cawthron Institute 98 Halifax St E, The Wood, Nelson, 7010, New Zealand
| | - G J Inglis
- National Institute of Water and Atmospheric Research, 10 Kyle St, Riccarton, Christchurch, 8011, New Zealand
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Mallen A, Townsend M, Boac B, Todd S, Gandhi A, Kuznicki M, Magliocco A, Fridley B, Tworoger S, Vadaparampil S, Wenham R. Predictive factors of genetic referral for advanced, epithelial ovarian cancer patients at a Single-Institution Cancer Center. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.03.191] [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: 10/26/2022]
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Townsend M, Karthigan R, Kaderbhai H, Bailey C, Panchalingam D, Keane A, Nehra D, Burney K. Gastric ulceration causing thoracic spondylodiscitis: a first case of a rare complication post oesophagectomy. BJR Case Rep 2019; 5:20170074. [PMID: 31131113 PMCID: PMC6519485 DOI: 10.1259/bjrcr.20170074] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 06/22/2018] [Accepted: 07/04/2018] [Indexed: 11/05/2022] Open
Abstract
We report the case of an 84-year-old male, who presented with septicaemia, abdominal and back pain. The patient had a background of oesophageal carcinoma and had undergone previous oesophagectomy and gastric pull-up operation 10 years ago. A computerised topography scan demonstrated a probable gastro-vertebral communication with a destructive process at the T8/T9 vertebral level. Further evaluation with MRI clearly showed the tract between the two structures and confirmed the diagnosis of spondylodiscitis at the adjacent spinal level. The patient was resuscitated, treated with intravenous antibiotics and kept nil by mouth. A subsequent gastroscopy demonstrated an eroding gastric ulcer at the enteric opening of the tract between the tubal stomach and the spinal column. The diagnosis was discussed with the patient, his family and the surgical multidisciplinary team. Given the extent of disease and his multiple medical co-morbidities, the decision was made for conservative management and symptom control. This is the first case of a gastro-vertebral communication causing spondylodiscitis to be described in the literature.
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Affiliation(s)
- M Townsend
- Epsom and St Helier’s NHS Trust, Carshalton, UK
| | - R Karthigan
- Epsom and St Helier’s NHS Trust, Carshalton, UK
| | - H Kaderbhai
- Epsom and St Helier’s NHS Trust, Carshalton, UK
| | - C Bailey
- Epsom and St Helier’s NHS Trust, Carshalton, UK
| | | | - A Keane
- Epsom and St Helier’s NHS Trust, Carshalton, UK
| | - D Nehra
- Epsom and St Helier’s NHS Trust, Carshalton, UK
| | - K Burney
- Epsom and St Helier’s NHS Trust, Carshalton, UK
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Townsend M, Le Quoc T, Kapoor G, Hu H, Zhou W, Piramuthu S. Real-Time business data acquisition: How frequent is frequent enough? Information & Management 2018. [DOI: 10.1016/j.im.2017.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Humby F, Dicicco M, Kelly S, Bombardieri M, Hands R, Rocher V, Zou L, Myles L, Blighe K, Ng N, Ramamoorthi N, Hackney J, Zuckerman N, Townsend M, Landewe R, Van der Helm van Mihl A, van der Heijde D, Buckely C, Taylor P, McInnes I, Pitzalis C. OP0240 Synovial Lymphocytic Aggregates Associate with Highly Active RA and Predict Erosive Disease Progression at 12 Months: Results from The Pathobiology of Early Arthritis Cohort. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3229] [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: 11/04/2022]
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Bruhn R, Custer B, Vanderpool S, Townsend M, Kamel H, Tomasulo P. Impact of increasing sample volume from 4 ml to 8 ml on bacterial detection rates in apheresis platelets: a meta-analysis. Vox Sang 2014; 108:318-20. [DOI: 10.1111/vox.12225] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 10/22/2014] [Accepted: 10/28/2014] [Indexed: 11/29/2022]
Affiliation(s)
- R. Bruhn
- Blood Systems Research Institute; San Francisco CA USA
| | - B. Custer
- Blood Systems Research Institute; San Francisco CA USA
| | | | | | - H. Kamel
- Blood Systems, Inc.; Scottsdale AZ USA
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Gibbs L, Staiger PK, Townsend M, Macfarlane S, Gold L, Block K, Johnson B, Kulas J, Waters E. Methodology for the evaluation of the Stephanie Alexander Kitchen Garden program. Health Promot J Austr 2013; 24:32-43. [PMID: 23575587 DOI: 10.1071/he12905] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 10/21/2012] [Indexed: 11/23/2022] Open
Abstract
ISSUES ADDRESSED Community and school cooking and gardening programs have recently increased internationally. However, despite promising indications, there is limited evidence of their effectiveness. This paper presents the evaluation framework and methods negotiated and developed to meet the information needs of all stakeholders for the Stephanie Alexander Kitchen Garden (SAKG) program, a combined cooking and gardening program implemented in selectively funded primary schools across Australia. METHODS The evaluation used multiple aligned theoretical frameworks and models, including a public health ecological approach, principles of effective health promotion and models of experiential learning. The evaluation is a non-randomised comparison of six schools receiving the program (intervention) and six comparison schools (all government-funded primary schools) in urban and rural areas of Victoria, Australia. A mixed-methods approach was used, relying on qualitative measures to understand changes in school cultures and the experiential impacts on children, families, teachers, parents and volunteers, and quantitative measures at baseline and 1 year follow up to provide supporting information regarding patterns of change. RESULTS The evaluation study design addressed the limitations of many existing evaluation studies of cooking or garden programs. The multistrand approach to the mixed methodology maintained the rigour of the respective methods and provided an opportunity to explore complexity in the findings. Limited sensitivity of some of the quantitative measures was identified, as well as the potential for bias in the coding of the open-ended questions. CONCLUSION The SAKG evaluation methodology will address the need for appropriate evaluation approaches for school-based kitchen garden programs. It demonstrates the feasibility of a meaningful, comprehensive evaluation of school-based programs and also demonstrates the central role qualitative methods can have in a mixed-method evaluation. So what? This paper contributes to debate about appropriate evaluation approaches to meet the information needs of all stakeholders and will support the sharing of measures and potential comparisons between program outcomes for comparable population groups and settings.
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Affiliation(s)
- L Gibbs
- The McCaughey VicHealth Centre of Community Wellbeing, The University of Melbourne, Australia.
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Kennedy W, Horn P, Su Z, Basu K, Herman A, Song A, Townsend M, Xiao J, Grogan J, Derby M, Simon-Campos JA, Davis J. SAT0110 Efficacy and Safety of Pateclizumab (Anti-Lymphotoxin-Alpha) in Dmard-Ir Patients: Results of a Randomized, Double-Blind, Placebo-Controlled Head-To-Head Phase 2 Study with Adalimumab. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1836] [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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Herman A, Musselman D, Fischer S, Setiadi A, Gabay C, Kavanaugh A, Klearman M, Song A, Townsend M. THU0130 Distinct Biomarkers Enrich for Clinical Response to Tocilizumab (TCZ) and Adalimumab (ADA) in Adacta: A Head-to-Head Monotherapy Study in Patients (PTS) with Methotrexate (MTX)-IR Rheumatoid Arthritis (RA). Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Herman AE, Kennedy WP, Townsend M, Williams M, Grogan J, Fischer S, Iyer S, Song A, Davis JC. FRI0170 Pharmacodynamic biomarkers demonstrate overlapping and distinct biological pathways for lymphotoxin-alpha and tumor necrosis factor-alpha in patients with rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1297] [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: 11/04/2022]
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Lee RW, Millward KE, Ossai FE, Ellis D, Townsend M. P195 Case Series: How Useful Are Fleischner Guidelines For Nodule Surveillance in a District General Hospital? Thorax 2012. [DOI: 10.1136/thoraxjnl-2012-202678.256] [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: 11/04/2022]
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Patrick R, Capetola T, Townsend M, Nuttman S. Health promotion and climate change: exploring the core competencies required for action. Health Promot Int 2011; 27:475-85. [DOI: 10.1093/heapro/dar055] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [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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Bailey A, Snead M, Costenbader E, Townsend M, Anderson C, Warner L, Kong TH, Steiner M. P2-S9.09 Help me understand your lab results: "an exploratory, qualitative study of discordance between biologic and self-reported measures of semen exposure in Jamaica". Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.395] [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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Nishikawa M, Owaki H, Fuji T, Soliman MM, Ashcroft DM, Watson KD, Lunt M, Symmons D, Hyrich KL, Atkinson F, Malik S, Heycock C, Saravanan V, Rynne M, Hamilton J, Kelly C, Burmester G, Kary S, Unnebrink K, Guerette B, Oezer U, Kupper H, Dennison E, Jameson K, Hyrich K, Watson K, Landewe R, Keystone E, Smolen J, Goldring M, Guerette B, Patra K, Cifaldi M, van der Heijde D, Lloyd LA, Owen C, Breslin A, Ahmad Y, Emery P, Matteson EL, Genovese M, Sague S, Hsia EC, Doyle MK, Fan H, Elashoff M, Kirkham B, Wasco MC, Bathon J, Hsia EC, Fleischmann R, Genovese MC, Matteson EL, Liu H, Fleischmann R, Goldman J, Leirisalo-Repo M, Zanetakis E, El-Kadi H, Kellner H, Bolce R, Wang J, Dehoratius R, Decktor D, Kremer J, Taylor P, Mendelsohn A, Baker D, Kim L, Ritchlin C, Taylor P, Mariette X, Matucci Cerenic M, Pavelka K, van Vollenhoven R, Heatley R, Walsh C, Lawson R, Reynolds A, Emery P, Iaremenko O, Mikitenko G, Smolen J, van Vollenhoven R, Kavanaugh A, Luijtens K, van der Heijde D, Curtis J, van der Heijde D, Schiff M, Keystone E, Landewe R, Kvien T, Curtis J, Khanna D, Luijtens K, Furst D, Behrens F, Koehm M, Scharbatke EC, Kleinert S, Weyer G, Tony HP, Burkhardt H, Blunn KJ, Williams RB, Young A, McDowell J, Keystone E, Weinblatt M, Haraoui B, Guerette B, Mozaffarian N, Patra K, Kavanaugh A, Khraishi M, Alten R, Gomez-Reino J, Rizzo W, Schechtman J, Kahan A, Vernon E, Taylor M, Smolen J, Hogan V, Holweg C, Kummerfeld S, Teng O, Townsend M, van Laar JM, Gullick NJ, De Silva C, Kirkham BW, van der Heijde D, Landewe R, Guerette B, Roy S, Patra K, Keystone E, Emery P, Fleischmann R, van der Heijde D, Keystone E, Genovese MC, Conaghan PG, Hsia EC, Xu W, Baratelle A, Beutler A, Rahman MU, Nikiphorou E, Kiely P, Walsh DA, Williams R, Young A, Shah D, Knight GD, Hutchinson DG, Dass S, Atzeni F, Vital EM, Bingham SJ, Buch M, Beirne P, Emery P, Keystone E, Fleischmann R, Emery P, Dougados M, Williams S, Reynard M, Blackler L, Gullick NJ, Zain A, Oakley S, Rees J, Jones T, Mistlin A, Panayi G, Kirkham BW, Westhovens R, Durez P, Genant H, Robles M, Becker JC, Covucci A, Bathon J, Genovese MC, Schiff M, Luggen M, Le Bars M, Becker JC, Aranda R, Li T, Elegbe A, Dougados M, Smolen J, van Vollenhoven R, Kavanaugh A, Fichtner A, Strand V, Vencovsky J, van der Heijde D, Davies R, Galloway J, Watson KD, Lunt M, Hochberg M, Westhovens R, Aranda R, Kelly S, Khan N, Qi K, Pappu R, Delaet I, Luo A, Torbeyns A, Moreland L, Cohen R, Gujrathi S, Weinblatt M, Bykerk VP, Alvaro-Gracia J, Andres Roman Ivorra J, Nurmohamed MT, Pavelka K, Bernasconi C, Stancati A, Sibilia J, Ostor A, Strangfeld A, Eveslage M, Listing J, Herzer P, Liebhaber A, Krummel-Lorenz B, Zink A, Haraoui B, Emery P, Mozaffarian N, Guerette B, Kupper H, Patra K, Keystone E, Genovese MC, Breedveld FC, Emery P, Cohen SB, Keystone E, Matteson EL, Burke L, Chai A, Reiss W, Sweetser M, Shaw T, Ellis SD, Ehrenstein MR, Notley CA, Yazici Y, Curtis J, Ince A, Baraf H, Malamet R, Chung CY, Kavanaugh A, Hughes C, Faurholm B, Dell'Accio F, Manzo A, Seed M, Eltawil N, Marrelli A, Gould D, Subang C, Al-Kashi A, De Bari C, Winyard P, Chernajovsky Y, Nissim A, van Vollenhoven R, Emery P, Bingham C, Keystone E, Fleischmann RM, Furst DE, Macey KM, Sweetser MT, Lehane P, Farmer P, Long SG, Kremer JM, Furst DE, Burgos-Vargas R, Dudler J, Mela CM, Vernon E, Fleischmann RM, Wegner N, Lugli H, Quirke AM, Guo Y, Potempa J, Venables P. Rheumatoid arthritis - treatment: 180. Utility of Body Weight Classified Low-Dose Leflunomide in Japanese Rheumatoid Arthritis. Rheumatology (Oxford) 2011. [DOI: 10.1093/rheumatology/ker031] [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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Hogan V, Holweg C, Kummerfeld S, Teng YKO, Townsend M, van Laar JM. Changes in gene expression in synovial tissue from refractory rheumatoid arthritis patients treated with rituximab. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148965.8] [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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Balboa I, Huang B, Naylor G, Walsh M, Sirinelli A, Parsons P, Fessey J, Townsend M, Beurskens M, Conway N, Flanagan J, Kempenaars M, Kirk A. Laser beam combiner for Thomson scattering core LIDAR. Rev Sci Instrum 2010; 81:10D534. [PMID: 21033888 DOI: 10.1063/1.3485081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The light detection and ranging Thomson scattering (TS) diagnostic is advantageous since it only requires a single view port into the tokamak. This technique requires a short pulse laser at high energy, usually showing a limited repetition rate. Having multiple lasers will increase the repetition rate. This paper presents a scanning mirror as a laser beam combiner. Measurements of the position accuracy and jitter show that the pointing stability of the laser beam is within ±25 μrad for over tens of seconds. A control feedback loop is implemented to demonstrate the long term stability. Such a system could be applied for ITER and JET.
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Affiliation(s)
- I Balboa
- EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB, United Kingdom.
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Khavandi A, Durack A, Kesavan S, Townsend M, Hutter J, Turner M, Baumbach A. 097 Surgical aortic valve replacement in high risk octogenerians vs transcatheter aortic valve implantation. Heart 2010. [DOI: 10.1136/hrt.2010.196071.19] [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: 11/04/2022]
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Lim SH, Esler WV, Periman PO, Beggs D, Zhang Y, Townsend M. Reduced-intensity umbilical cord blood transplant for older adult patients. Bone Marrow Transplant 2008; 42:685-6. [DOI: 10.1038/bmt.2008.225] [Citation(s) in RCA: 3] [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: 11/09/2022]
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Beaumont NJ, Austen MC, Mangi SC, Townsend M. Economic valuation for the conservation of marine biodiversity. Mar Pollut Bull 2008; 56:386-396. [PMID: 18191954 DOI: 10.1016/j.marpolbul.2007.11.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2007] [Accepted: 11/28/2007] [Indexed: 05/25/2023]
Abstract
Policy makers are increasingly recognising the role of environmental valuation to guide and support the management and conservation of biodiversity. This paper presents a goods and services approach to determine the economic value of marine biodiversity in the UK, with the aim of clarifying the role of valuation in the management of marine biodiversity. The goods and services resulting from UK marine biodiversity are detailed, and 8 of the 13 services are valued in monetary terms. It is found that a decline in UK marine biodiversity could result in a varying, and at present unpredictable, change in the provision of goods and services, including reduced resilience and resistance to change, declining marine environmental health, reduced fisheries potential, and loss of recreational opportunities. The results suggest that this approach can facilitate biodiversity management by enabling the optimal allocation of limited management resources and through raising awareness of the importance of marine biodiversity.
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Affiliation(s)
- N J Beaumont
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH, United Kingdom.
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Abstract
BACKGROUND Patients with heart failure and a normal left ventricular ejection fraction have significantly reduced left ventricular long-axis function. This paper proposes an explanation for this apparent paradox and suggests a new mechanism of "diastolic" heart failure. METHOD The effect of changes in left ventricular hypertrophy on stroke volume and ejection fraction in non-dilated left ventricles was calculated using the area-length method. Further, the effect of a reduction in long-axis shortening on these parameters was determined. RESULTS Increasing left ventricular hypertrophy resulted in augmentation of systolic wall thickening and ejection fraction but not stroke volume when long-axis shortening was normal. In the presence of abnormal long-axis function, stroke volume was reduced but ejection fraction was preserved. CONCLUSION The model predicts that the normal ejection fraction in patients with heart failure may be explained by the presence of left ventricular hypertrophy. The resulting amplified radial thickening in the setting of reduced long-axis shortening explains the preservation of ejection fraction. The reduced stroke volume in the precompensated state rather than diastolic dysfunction may be the cause of heart failure.
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Affiliation(s)
- D H Maciver
- Department of Cardiology, Taunton and Somerset Hospital, Musgrove Park, Taunton TA1 5DA, UK.
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Beaumont NJ, Austen MC, Atkins JP, Burdon D, Degraer S, Dentinho TP, Derous S, Holm P, Horton T, van Ierland E, Marboe AH, Starkey DJ, Townsend M, Zarzycki T. Identification, definition and quantification of goods and services provided by marine biodiversity: implications for the ecosystem approach. Mar Pollut Bull 2007; 54:253-65. [PMID: 17266994 DOI: 10.1016/j.marpolbul.2006.12.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2006] [Accepted: 12/03/2006] [Indexed: 05/13/2023]
Abstract
This paper identifies and defines ecosystem goods and services provided by marine biodiversity. Case studies have been used to provide an insight into the practical issues associated with the assessment of marine ecosystem goods and services at specific locations. The aim of this research was to validate the definitions of goods and services, and to identify knowledge gaps and likely difficulties of quantifying the goods and services. A validated theoretical framework for the assessment of goods and services is detailed, and examples of the goods and services at a variety of case study areas are documented. These results will enable future assessments of marine ecosystem goods and services. It is concluded that the utilisation of this goods and services approach has the capacity to play a fundamental role in the Ecosystem Approach, by enabling the pressures and demands of society, the economy and the environment to be integrated into environmental management.
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Affiliation(s)
- N J Beaumont
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, Devon, United Kingdom.
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Babbage G, Townsend M, Zojer N, Mockridge IC, Garand R, Barlogie B, Shaughnessy J, Stevenson FK, Sahota SS. IgM-expressing Waldenstrom's macroglobulinemia tumor cells reveal a potential for isotype switch events in vivo. Leukemia 2007; 21:827-30. [PMID: 17287856 DOI: 10.1038/sj.leu.2404538] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Walsh DM, Klyubin I, Shankar GM, Townsend M, Fadeeva JV, Betts V, Podlisny MB, Cleary JP, Ashe KH, Rowan MJ, Selkoe DJ. The role of cell-derived oligomers of Abeta in Alzheimer's disease and avenues for therapeutic intervention. Biochem Soc Trans 2006; 33:1087-90. [PMID: 16246051 DOI: 10.1042/bst20051087] [Citation(s) in RCA: 123] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Burgeoning evidence suggests that soluble oligomers of Abeta (amyloid beta-protein) are the earliest effectors of synaptic compromise in Alzheimer's disease. Whereas most other investigators have employed synthetic Abeta peptides, we have taken advantage of a beta-amyloid precursor protein-overexpressing cell line (referred to as 7PA2) that secretes sub-nanomolar levels of low-n oligomers of Abeta. These are composed of heterogeneous Abeta peptides that migrate on SDS/PAGE as dimers, trimers and tetramers. When injected into the lateral ventricle of rats in vivo, these soluble oligomers inhibit hippocampal long-term potentiation and alter the memory of a complex learned behaviour. Biochemical manipulation of 7PA2 medium including immunodepletion with Abeta-specific antibodies and fractionation by size-exclusion chromatography allowed us to unambiguously attribute these effects to low-n oligomers. Using this paradigm we have tested compounds directed at three prominent amyloid-based therapeutic targets: inhibition of the secretases responsible for Abeta production, inhibition of Abeta aggregation and immunization against Abeta. In each case, compounds capable of reducing oligomer production or antibodies that avidly bind Abeta oligomers also ameliorate the synaptotoxic effects of these natural, cell-derived oligomers.
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Affiliation(s)
- D M Walsh
- Laboratory for Neurodegenerative Research, Conway Institute, University College Dublin, Republic of Ireland.
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Wilcock A, Chelin M, Hall M, Hamley N, Morrison B, Scrivener L, Townsend M, Treen K. The relationship between occupational balance and health: a pilot study. Occup Ther Int 2006. [DOI: 10.1002/oti.45] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Townsend M, MacIver DH, Bilku R. Platypnoea-orthodeoxia syndrome in association with an ascending aortic aneurysm. Eur J Echocardiogr 2005; 8:50-2. [PMID: 16275101 DOI: 10.1016/j.euje.2005.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2005] [Revised: 09/17/2005] [Accepted: 09/29/2005] [Indexed: 10/25/2022]
Abstract
Platypnoea-orthodeoxia syndrome is a uncommon condition presenting with dyspnoea and cyanosis that are characteristically worse in the upright posture and improved by lying supine. We present the case of a patient with a thoracic aortic aneurysm and a patent foramen ovale who presented with platypnoea-orthodeoxia syndrome. Diagnosis was established using transoesophageal echocardiography. We suggest a mechanism for the development of dyspnoea and hypoxia in patients with this disorder.
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Affiliation(s)
- M Townsend
- Department of Cardiology, Taunton and Somerset NHS Trust, Musgrove Park, UK.
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Lim SH, Zhang Y, Wang Z, Esler WV, Beggs D, Pruitt B, Hancock P, Townsend M. Maintenance rituximab after autologous stem cell transplant for high-risk B-cell lymphoma induces prolonged and severe hypogammaglobulinemia. Bone Marrow Transplant 2005; 35:207-8. [PMID: 15531902 DOI: 10.1038/sj.bmt.1704742] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
A 63 year old man with a six year history of Parkinson's disease presented with signs of right heart failure following a knee replacement. Constrictive pericarditis was diagnosed and a radical pericardectomy performed. Six months later, the patient remained unwell with raised inflammatory markers. An inflammatory fibrotic reaction caused by cabergoline was diagnosed. He improved after cessation of cabergoline.
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Affiliation(s)
- M Townsend
- Department of Cardiology, Taunton and Somerset Hospital, Musgrove Park, Taunton TA1 5DA, UK.
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Abstract
Australian football and netball are the predominant sports played in rural Victoria, Australia. This exploratory study is the first to report the sport safety policies and practices adopted by junior Australian football and netball clubs in small rural communities. Eleven informants from four clubs completed a semi-structured interview and survey. Whilst the clubs performed a range of injury prevention activities, they did not have formal sports safety policies. Generally, netball informants reported fewer safety practices than football informants. Crucial factors influencing safety policies and practices were the reliance on volunteers and a lack of senior players. Barriers towards the adoption of safety policies and practices appeared to be related to rural population declines, a lack of qualified people and attitudes to injury in rural areas. Future research needs to identify how widespread this lack of sport safety policies and practices is across rural Australia and to identify strategies to overcome barriers to implementing them.
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Affiliation(s)
- M Casey
- School of Health Sciences, Deakin University, Victoria, Australia
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35
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Lim SH, Zhang Y, Wang Z, Varadarajan R, Smith P, Burris C, Townsend M. Umbilical cord blood transplant in hepatitis C-associated severe aplastic anemia. Bone Marrow Transplant 2003; 33:565-7. [PMID: 14688818 DOI: 10.1038/sj.bmt.1704390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Townsend M, Burtchaell S, Shackleford J, James M. 3.6 The significance of atrial fibrillation occurring during acute myocardial infarction. Europace 2003. [DOI: 10.1016/eupace/4.supplement_1.a5-c] [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: 11/25/2022] Open
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37
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Townsend M, Mahoney M, Jones JA, Ball K, Salmon J, Finch CF. Too hot to trot? exploring potential links between climate change, physical activity and health. J Sci Med Sport 2003; 6:260-5. [PMID: 14609142 DOI: 10.1016/s1440-2440(03)80019-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Based on an analysis of existing literature, this paper explores the links between climate change, physical activity and health. It highlights the importance of physical activity for health, explores current understandings of factors influencing participation in sport and physical activity, and develops some hypotheses about the ways in which climate change may impact on the factors influencing physical activity and thereby on the level of participation in physical activity. The paper argues that climate change has the potential to be a barrier to participation in physical activity, particularly in areas where temperatures are already relatively high, and that a reduction in physical activity across the population is likely to have detrimental health impacts. The need for research to clarify the nature and extent of the threat posed to physical activity participation is highlighted, as is the need to take into account the direct and indirect costs of any changes or reductions in physical activity in any assessment of the costs of climate change and/or its mitigation.
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Affiliation(s)
- M Townsend
- School of Health Sciences, Deakin University, Victoria, Australia
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Townsend M, Moore J, Mahoney M. Playing their part: the role of physical activity and sport in sustaining the health and well being of small rural communities. Rural Remote Health 2002; 2:109. [PMID: 15876137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
It is widely recognised that the health of rural Australians is poor in comparison with their urban counterparts. Similarly, the role played by physical activity in maintaining health has been well researched and is well documented. However, little appears to have been published in recent years about the links between physical activity and health in rural communities. The objective of this article was to begin to address that gap. To achieve this, the article drew on research conducted in two small rural communities in Victoria Australia, and highlighted the role that physical activity and sport played in sustaining the health and wellbeing of individuals and communities in rural areas. Taking the World Health Organisation's definition of health (a state of complete physical, mental and social well-being and not merely the absence of disease) as its measure, the paper highlighted the many ways in which physical activity and sport in rural communities contribute to physical health, mental wellbeing and social cohesiveness. Based this finding, the authors suggest that physical activity and sport make a significant contribution to the health and wellbeing of rural people and their communities and suggest that further research is necessary to better define this apparent contribution.
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Affiliation(s)
- M Townsend
- School of Health Sciences, Deakin University, Burwood, Victoria, Australia.
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Haldeman S, Carey P, Townsend M, Papadopoulos C. Arterial dissections following cervical manipulation: the chiropractic experience. CMAJ 2001; 165:905-6. [PMID: 11599329 PMCID: PMC81498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
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42
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Miller ED, Duus KM, Townsend M, Yi Y, Collman R, Reitz M, Su L. Human immunodeficiency virus type 1 IIIB selected for replication in vivo exhibits increased envelope glycoproteins in virions without alteration in coreceptor usage: separation of in vivo replication from macrophage tropism. J Virol 2001; 75:8498-506. [PMID: 11507195 PMCID: PMC115095 DOI: 10.1128/jvi.75.18.8498-8506.2001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Analysis of viral replication and pathogenicity after in vivo selection of human immunodeficiency virus type 1 (HIV-1) attenuated in vitro will help to define the functions involved in replication and pathogenesis in vivo. Using the SCID-hu Thy/Liv mouse and human fetal thymus organ culture as in vivo models, we previously defined HIV-1 env determinants (HXB2/LW) which were reverted for replication in vivo (L. Su et al., Virology 227:46-52, 1997). In this study, we examined the replication of four highly related HIV-1 clones directly derived from Lai/IIIB or after selection in vivo to investigate the envelope gp120 determinants associated with replication in macrophages and in the thymus models in vivo. The LW/C clone derived from the IIIB-infected laboratory worker and HXB2/LW both efficiently infected monocyte-derived macrophages (MDM) and the human thymus. Although the laboratory worker (LW) isolates showed altered tropism from IIIB, they still predominantly used CXCR4 as coreceptors for infecting peripheral blood mononuclear cells, macrophages, and the thymus. Interestingly, a single amino acid mutation in the V3 loop associated with resistance to neutralizing antibodies was also essential for the replication activity of the LW virus in the thymus models but not for its activity in infecting MDM. The LW virions were equally sensitive to a CXCR4 antagonist. We further demonstrated that the LW HIV-1 isolate selected in vivo produced more infectious viral particles that contained higher levels of the Env protein gp120. Thus, selection of the laboratory-attenuated Lai/IIIB isolate in vivo leads to altered tropism but not coreceptor usage of the virus. The acquired replication activity in vivo is correlated with an early A-to-T mutation in the V3 loop and increased virion association of HIV-1 Env gp120, but it is genetically separable from the acquired replication activity in macrophages.
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Affiliation(s)
- E D Miller
- The Lineberger Comprehensive Cancer Center, Department of Microbiology and Immunology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599-7295, USA
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43
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Shi J, Aamodt SM, Townsend M, Constantine-Paton M. Developmental depression of glutamate neurotransmission by chronic low-level activation of NMDA receptors. J Neurosci 2001; 21:6233-44. [PMID: 11487646 PMCID: PMC6763141] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Slabs of slow-release plastic (Elvax) containing NMDA or solvent were implanted over the rat colliculus beginning on postnatal day 8 (P8). Whole-cell patch clamping in the superficial superior collicular layers (sSCs) from P10 to P21 demonstrated a severe decrease in spontaneous EPSC frequency after chronic NMDA treatment. The decrease was not attributable to an increase in GABA(A) receptor-mediated inhibition and was present only when NMDA receptor (NMDAR) current was blocked by Mg(2+). Analysis of miniature EPSCs indicated that many active sites on NMDA-treated neurons lacked functional AMPA and kainate receptor (AMPA/KAR) currents, and AMPA/KAR:NMDAR current ratios of evoked EPSCs were also significantly reduced. In addition, the normal downregulation of NMDAR decay time in sSC neurons at P11 was absent after NMDA treatment. Nevertheless, neither AMPA nor NMDA receptor subunit expression was altered by NMDA treatment, and experiments with the NMDAR antagonist ifenprodil suggested that incorporation of NR2A-containing NMDARs at the sSC synapses was unperturbed. Thus, disrupting but not blocking NMDARs suppresses the development of AMPA/KAR currents. The absence of the P11 NMDAR current downregulation is likely a secondary effect resulting from the reduction of AMPA/KAR function. Chronic agonist application reduces but does not eliminate NMDAR conductances. Therefore these data support an active role for NMDAR currents in synaptic development. Prolonged NMDA treatment in vivo, which couples reduced postsynaptic Ca(2+) responses with normally developing afferent activity, produces a long-lasting synaptic depression and stalls glutamatergic synaptogenesis, suggesting that the correlation between robust NMDAR activation and afferent activity is an essential component during normal development.
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Affiliation(s)
- J Shi
- Departments of Biology and Brain and Cognitive Science and The McGovern Brain Research Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Conway KP, Byrne J, Townsend M, Lane IF. Prognosis of patients turned down for conventional abdominal aortic aneurysm repair in the endovascular and sonographic era: Szilagyi revisited? J Vasc Surg 2001; 33:752-7. [PMID: 11296328 DOI: 10.1067/mva.2001.112800] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
PURPOSE The United Kingdom Small Aneurysm study has demonstrated the low risk of rupture in aneurysms less than 5.5 cm in diameter. With the advent of endoluminal techniques, patients considered unfit to undergo laparotomy are now considered for endovascular repair. However, the natural history of aneurysms larger than 5.5 cm remains uncertain, especially when severe comorbidity is present. In our center, we prospectively maintain records of all patients for whom elective aneurysm surgery was refused. This study documented the outcome of all patients referred with abdominal aortic aneurysms (AAAs) larger than 5.5 cm in diameter who were turned down for elective open repair and determined the cause of death and risk of rupture in all patients. METHODS Details of all patients with AAAs from January 5, 1989, to January 5, 1999, were recorded, and demographic details on all patients with AAAs larger than 5.5 cm were collected. Copies of death certificates were obtained from the Office of National Statistics, local in-hospital patient records, and general practitioner records. Results of postmortem examinations were also obtained. Aneurysms were stratified according to their size at presentation (5.5-5.9 cm, 6.0-7.0 cm, and > 7.0 cm), and the reasons no intervention was made were documented. RESULTS A total of 106 patients were turned down for elective aneurysm surgery in the 10-year period (10.6 per year). The mean age of the patients was 78.4 years (SD, 7.4), and 70 were men and 36 were women. At the end of the study, 76 patients (71.7%) had died. Overall, the 3-year survival rate was 17%. Patients with AAAs larger than 7.0 cm lived a median of 9 months. A ruptured aneurysm was certified as a cause of death in 36% of the patients with an AAA of 5.5 to 5.9 cm, in 50% of the patients with an AAA of 6 to 7.0 cm, and 55% of the patients with an AAA larger than 7.0 cm. Reasons given for not intervening were patient refusal (31 cases), the patient being "unfit for surgery" (18 cases), the "advanced age" of the patient (18 cases), cardiac disease (9 cases), cancer (9 cases), respiratory disease (6 cases), and other (15 cases). CONCLUSION Although we recognize the problems with death certification, we found that rupture was a significant cause of death in patients with an untreated AAA that was larger than 5.5 cm. Although little difference in outcome was observed in aneurysms in the 5.5 to 7.0 cm size range, patients with an AAA that was larger than 7.0 cm seemed to have a much poorer prognosis.
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Affiliation(s)
- K P Conway
- Cardiff Vascular Unit, University Hospital of Wales, Heath Park, UK
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45
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Penn DL, Combs DR, Ritchie M, Francis J, Cassisi J, Morris S, Townsend M. Emotion recognition in schizophrenia: further investigation of generalized versus specific deficit models. J Abnorm Psychol 2000. [PMID: 11016120 DOI: 10.1037//002i-843x.109.3.512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this study, the authors examined the nature of emotion perception in schizophrenia. Two samples of people with schizophrenia, one receiving acute care for a recent exacerbation of symptoms and the other receiving extended care, were compared with a nonclinical control group on emotion perception and general perception measures. The nonclinical control group obtained the highest scores on all of the study measures, and the acutely ill group obtained the lowest scores. Furthermore, the acutely ill sample had a specific deficit in emotion perception that remained present after controlling for performance on the general perception tasks. Conversely, the deficits in emotion discrimination in the extended-care sample reflected generalized poor performance. Differences in performance on the emotion identification task between the 2 clinical groups were reduced when controlling for active symptoms.
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Affiliation(s)
- D L Penn
- Department of Psychology, University of North Carolina at Chapel Hill 27599-3270, USA.
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Shi J, Townsend M, Constantine-Paton M. Activity-dependent induction of tonic calcineurin activity mediates a rapid developmental downregulation of NMDA receptor currents. Neuron 2000; 28:103-14. [PMID: 11086987 DOI: 10.1016/s0896-6273(00)00089-1] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Whole-cell recording in the superficial layers of the developing superior colliculus (sSC) reveals a large drop in NMDA receptor (NMDAR) current decay time synchronized across all neurons and occurring consistently between P10 and P11. We show that blocking the Ca2+/calmodulin-dependent phosphatase calcineurin (CaN) in the postsynaptic neuron can abolish this drop. The regulation is induced prematurely by 1-2 hr of electrical stimulation in P10 collicular slices only if CaN and NMDAR currents can be activated in the neuron. These data suggest that a long-lasting, CaN-mediated control of NMDAR kinetics is rapidly initiated by heightened activity of the NMDAR itself and demonstrate a novel developmental and tonic function of CaN that can play an important role in modulating the plasticity of the developing CNS.
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Affiliation(s)
- J Shi
- Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, USA
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47
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Penn DL, Combs DR, Ritchie M, Francis J, Cassisi J, Morris S, Townsend M. Emotion recognition in schizophrenia: further investigation of generalized versus specific deficit models. J Abnorm Psychol 2000. [PMID: 11016120 DOI: 10.1037/002i-843x.109.3.512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In this study, the authors examined the nature of emotion perception in schizophrenia. Two samples of people with schizophrenia, one receiving acute care for a recent exacerbation of symptoms and the other receiving extended care, were compared with a nonclinical control group on emotion perception and general perception measures. The nonclinical control group obtained the highest scores on all of the study measures, and the acutely ill group obtained the lowest scores. Furthermore, the acutely ill sample had a specific deficit in emotion perception that remained present after controlling for performance on the general perception tasks. Conversely, the deficits in emotion discrimination in the extended-care sample reflected generalized poor performance. Differences in performance on the emotion identification task between the 2 clinical groups were reduced when controlling for active symptoms.
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Affiliation(s)
- D L Penn
- Department of Psychology, University of North Carolina at Chapel Hill 27599-3270, USA.
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Kenley RA, Tracht S, Stepanenko A, Townsend M, L'Italien J. Kinetics of pramlintide degradation in aqueous solution as a function of temperature and pH. AAPS PharmSciTech 2000; 1:E7. [PMID: 14727840 PMCID: PMC2784819 DOI: 10.1208/pt010207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The stability of the 37-amino acid peptide pramlintide, in aqueous solution, was studied as a function of pH and temperature. Samples of pramlintide formulated as a parenteral product were exposed to elevated temperatures and to realistic storage conditions for as long as 30 months. Pramlintide degradation was monitored by three high-performance liquid chromatography (HPLC) methods: a reversed-phase (RP-HPLC) and a strong-cation exchange (SCX-HPLC) method for percentage purity determination by area normalization, plus a second RP-HPLC method for potency determination versus external standards. The pH-rate profile for pramlintide shows increasing degradation rate constants with increasing pH over the range pH = 3.5 to 5.0. The Arrhenius expression for pramlintide degradation at pH = 4.0 over the temperature range 5 degrees C to 50 degrees C is ln(k(0))= 37.39-21.900/RT, where k(0) is the zero-order rate constant (in %/mo) for pramlintide degradation. The pramlintide parenteral product formulated at pH = 4.0 is extremely stable, with percentage purity and percentage potency loss of only approximately 2% over 30 months at 5 degrees C. The formulated pramlintide drug product has acceptable shelf life for long-term storage at 5 degrees C and up to a 30-day patient use when stored at ambient temperature.
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Affiliation(s)
- R A Kenley
- Cabrillo Facility of Magellan Laboratories, Inc., 9250 Trade Place, San Diego, CA 92126, USA.
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Abstract
The article examines the effects of temperature excursions and actual dose withdrawal on the quality of pramlintide injection, a multidose liquid parenteral formulation. Studies were designed to demonstrate product robustness under conditions that may occur during patient use. Pramlintide %Purity was determined by two high-performance liquid chromatography (HPLC) methods, a reversed-phase (RP-HPLC) and a strong-cation exchange (SCX-HPLC) method. A second RP-HPLC method was used to determine pramlintide potency and the concentration of the m-cresol preservative. Antimicrobial preservative effectiveness testing was per USP and European Pharmacopeia (Ph. Eur.). Short-term stability studies were undertaken to probe the effects of the following conditions: 5 degrees C to 40 degrees C and 5 degrees C to -20 degrees C temperature cycling over 10 days; once daily or four-times daily dose withdrawal over 12 or 42 days; and combined 30 degrees C storage and four-times daily dose withdrawal over 42 days. In all cases, pramlintide %Purity and potency values remained essentially unchanged or unchanged relative to controls. Similarly, product appearance, and m-cresol concentration and preservative effectiveness were not significantly affected by the stress conditions used in the 5 studies. Pramlintide injection drug product is extremely robust to challenging stress conditions that may occur during patient use of this multidose product for chronic administration.
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Affiliation(s)
- R A Kenley
- Cabrillo Facility of Magellan Laboratories, Inc., 9250 Trade Place, San Diego, CA 92126, USA.
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50
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Abstract
The brain environment exerts a powerful influence on macrophage phenotype, as exemplified by microglia, but the mechanisms mediating this control are nuclear. Since adhesion molecules are known to transmit signals across cell membranes, we investigated adhesion receptors involved in macrophage interaction with brain tissue. We have demonstrated previously that macrophages adhere specifically to CNS neurones in an in vitro assay. Here we show that this adhesion is inhibited by lectins, including Griffonia simplicofolia isolectin B4 (GSI), which has been used as a microglial marker for many years. Adhesion is unaffected by antibodies to several known adhesion molecules but is markedly inhibited by a new monoclonal antibody: HB1. HB1 recognizes microglia in the normal brain and activated microglia and recruited monocytes during CNS pathology. It labels a subset of resident macrophages and recruited monocytes in other tissues. Using this antibody, we isolated a protein of about 110 kDa from macrophage cell lysates. This protein is recognized by GSI, providing the first evidence of a functional role for the antigen labelled by this lectin. Further study of the HB1 antigen may provide important information about the influence of the brain environment on the phenotype of monocytic cells.
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Affiliation(s)
- H Brown
- Oxford University, Department of Pharmacology, UK
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