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Wang D, Han I, McCullough K, Klaus S, Lee J, Srinivasan V, Li G, Wang ZL, Bott CB, McQuarrie J, Stinson BM, deBarbadillo C, Dombrowski P, Barnard J, Gu AZ. Side-Stream Enhanced Biological Phosphorus Removal (S2EBPR) enables effective phosphorus removal in a pilot-scale A-B stage shortcut nitrogen removal system for mainstream municipal wastewater treatment. Water Res 2024; 251:121050. [PMID: 38241807 DOI: 10.1016/j.watres.2023.121050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/04/2023] [Accepted: 12/20/2023] [Indexed: 01/21/2024]
Abstract
While the adsorption/bio-oxidation (A/B) process has been widely studied for carbon capture and shortcut nitrogen (N) removal, its integration with enhanced biological phosphorus (P) removal (EBPR) has been considered challenging and thus unexplored. Here, full-scale pilot testing with an integrated system combining A-stage high-rate activated sludge with B-stage partial (de)nitrification/anammox and side-stream EBPR (HRAS-P(D)N/A-S2EBPR) was conducted treating real municipal wastewater. The results demonstrated that, despite the relatively low influent carbon load, the B-stage P(D)N-S2EBPR system could achieve effective P removal performance, with the carbon supplement and redirection of the A-stage sludge fermentate to the S2EBPR. The novel process configuration design enabled a system shift in carbon flux and distribution for efficient EBPR, and provided unique selective factors for ecological niche partitioning among different key functionally relevant microorganisms including polyphosphate accumulating organisms (PAOs) and glycogen-accumulating organisms (GAOs). The combined nitrite from B-stage to S2EBPR and aerobic-anoxic conditions in our HRAS-P(D)N/A-S2EBPR system promoted DPAOs for simultaneous internal carbon-driven denitrification via nitrite and P removal. 16S rRNA gene-based oligotyping analysis revealed high phylogenetic microdiversity within the Accumulibacter population and discovered coexistence of certain oligotypes of Accumulibacter and Competibacter correlated with efficient P removal. Single-cell Raman micro-spectroscopy-based phenotypic profiling showed high phenotypic microdiversity in the active PAO community and the involvement of unidentified PAOs and internal carbon-accumulating organisms that potentially played an important role in system performance. This is the first pilot study to demonstrate that the P(D)N-S2EBPR system could achieve shortcut N removal and influent carbon-independent EBPR simultaneously, and the results provided insights into the effects of incorporating S2EBPR into A/B process on metabolic activities, microbial ecology, and resulted system performance.
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Affiliation(s)
- Dongqi Wang
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, Shaanxi, 710048, China; Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States
| | - Il Han
- School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY, 14853, United States
| | - Kester McCullough
- School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY, 14853, United States; Hampton Roads Sanitation District, 1434 Air Rail Avenue, Virginia Beach, VA, 23454, United States
| | - Stephanie Klaus
- Hampton Roads Sanitation District, 1434 Air Rail Avenue, Virginia Beach, VA, 23454, United States
| | - Jangho Lee
- School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY, 14853, United States
| | - Varun Srinivasan
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States; Brown and Caldwell, One Tech Drive, Andover, MA 01810, United States
| | - Guangyu Li
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States; School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY, 14853, United States
| | - Zijian Leo Wang
- Department of Biological and Environmental Engineering, College of Agriculture and Life Sciences, Cornell University, Riley-Robb Hall, 106, 111 Wing Dr, Ithaca, NY, 14850, United States
| | - Charles B Bott
- Hampton Roads Sanitation District, 1434 Air Rail Avenue, Virginia Beach, VA, 23454, United States
| | - Jim McQuarrie
- Denver Metro Wastewater Reclamation District, 6450 York St, Denver, CO 80229, United States
| | | | - Christine deBarbadillo
- District of Columbia Water and Sewer Authority, 5000 Overlook Ave., SW, Washington, DC 20032, USA
| | - Paul Dombrowski
- Woodard & Curran, Inc., 1699 King Street, Enfield, CT 06082, United States
| | - James Barnard
- Black & Veatch, 8400 Ward Parkway, Kansas City, MO, 64114, United States
| | - April Z Gu
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States; School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY, 14853, United States.
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Krishnamoorthy B, Critchley W, Nwaejike N, Mehta V, Callan P, Shaw S, Barnard J, Venkateswaran R. Use of the SherpaPak Cardiac Transport System Improves Freedom from Requirement for Mechanical Circulatory Support, Reduced Early Acute Cellular Rejection and Preserves Early Lv Function When Compared to Conventional Cold Storage. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1078] [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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3
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Sabba F, Farmer M, Jia Z, Di Capua F, Dunlap P, Barnard J, Qin CD, Kozak JA, Wells G, Downing L. Impact of operational strategies on a sidestream enhanced biological phosphorus removal (S2EBPR) reactor in a carbon limited wastewater plant. Sci Total Environ 2023; 857:159280. [PMID: 36216061 DOI: 10.1016/j.scitotenv.2022.159280] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/23/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Water resource recovery facilities are faced with stringent effluent phosphorus limits to reduce nutrient pollution. Enhanced biological phosphorus removal (EBPR) is the most common biological route to remove phosphorus; however, many facilities struggle to achieve consistent performance due to limited carbon availability in the influent wastewater. A promising process to improve carbon availability is through return activated sludge (RAS) fermentation via sidestream EBPR (S2EBPR). In this study, a full-scale S2EBPR pilot was operated with a sidestream plus carbon configuration (SSRC) at a carbon-limited facility. A model based on the pilot test was developed and calibrated in the SUMO platform and used to explore routes for improving orthophosphate (OP) effluent compliance. Modeling results showed that RAS diversion by itself was not sufficient to drive OP removal to permit limits of 1 mg L-1, therefore, other strategies were evaluated. Supplemental carbon addition of MicroC® at 1.90 L min-1 and controlling the phosphorus concentration below 3.5 mgP L-1 in the primary effluent (PE) proved to be valid supplemental strategies to achieve OP removal below 1 mg L-1 most of the time. In particular, the proposed supplemental carbon flow rate would result in an improvement of the rbCOD:P ratio from 17:1 to 26:1. The synergistic approach of RAS diversion and supplemental carbon addition increased the polyphosphate accumulating organisms (PAO) population while minimizing the supplemental carbon needed to achieve consistent phosphorus removal. Overall, this pilot and modeling study shows that joint strategies, including RAS diversion, carbon addition and PE control, can be effective to achieve optimal control of OP effluent.
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Affiliation(s)
| | - McKenna Farmer
- Northwestern University, Dept of Civil and Environmental Engineering, Evanston, IL, USA
| | - Zhen Jia
- Northwestern University, Dept of Civil and Environmental Engineering, Evanston, IL, USA
| | | | | | | | - Cindy Dongqi Qin
- Metropolitan Water Reclamation District of Greater Chicago, IL, USA
| | - Joseph A Kozak
- Metropolitan Water Reclamation District of Greater Chicago, IL, USA
| | - George Wells
- Northwestern University, Dept of Civil and Environmental Engineering, Evanston, IL, USA
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Sabba F, Farmer M, Barnard J, Dunlap P, Marroquin S, Giefer R, Budsberg D, Downing L. Enhancing resource recovery via cranberry syrup waste at the Wisconsin Rapids WRRF: An experimental and modeling study. J Environ Manage 2022; 323:116190. [PMID: 36261961 DOI: 10.1016/j.jenvman.2022.116190] [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] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 06/16/2023]
Abstract
The Wisconsin Rapids Wastewater Treatment Plant (WRWWTP) is faced with a more stringent effluent phosphorus requirement that will drive capital investment between 2020 and 2025. The facility will need to achieve a monthly average value of 0.36 mg L-1 of total phosphorus (TP). While the facility has sufficient influent carbon to drive a conventional enhanced biological phosphorus removal (EBPR) configuration, the existing infrastructure makes the addition of influent selector zones cost prohibitive. Underutilized aeration basin capacity was repurposed for testing return activated sludge (RAS) fermentation. The WRWWTP began pilot testing of RAS fermentation in April 2021. The facility moved through a series of operational setpoints to optimize phosphorus removal in a sidestream RAS (SSR) configuration, including RAS diversion, decrease of DO in aeration basins and chemical dosing shutoff. One of the key implementations was the addition of cranberry syrup waste to provide additional carbon for RAS fermentation, converting the process to a SSR plus carbon (SSRC) configuration. By the end of the testing period, effluent total phosphorus was averaging less than 0.4 mg L-1 with no chemical addition. A model was developed in the SUMO platform and was used to capture orthophosphate trends during the testing period. The model investigated microbial population dynamics and found that the operational changes including RAS diversion, chemical dosing shutoff and cranberry syrup waste addition impacted the enrichment of phosphorus accumulating organisms (PAO). After performing a sensitivity analysis on hydrolysis parameters, the predicted hydrolysis rate around 1.8-1.9 mg COD g VSS-1 hr-1 was found to match the batch rate testing data. This is the first study where cranberry syrup waste was used to successfully enhance EBPR performance, resulting in 90% TP removal. While further research is needed regarding the composition of the waste matrix and the microbial community composition, this expands the routes for resource recovery in the field of wastewater treatment.
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Choi E, Barnard J, Horns J, Paudel N, Das R, Yafi F, Hotaling J. Acne, folliculitis and post-operative infection rates of penile prosthetic implants. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jiang D, Barnard J, Choi E, Furr J, Lentz A, van Renterghem K, Selph P, Yafi F. Immediate salvage with inflatable penile prosthesis in an infected field: A contemporary multi-institutional cohort. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.435] [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]
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Jiang D, Barnard J, Choi E, Furr J, Lentz A, van Renterghem K, Selph P, Yafi FA. Immediate Salvage with Inflatable Penile Prosthesis in an Infected Field: A Contemporary Multi-institutional Cohort. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Loeb C, Barnard J, Yafi F, Schneider D. Does Medicaid Cover Male Urethral Sling Surgery? A State-by-State Analysis. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.199] [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]
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9
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Barnard J, Grimaud L, Yafi F. Does Medicaid Cover Penile Prosthesis Surgery? A State-by-State Analysis. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.034] [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: 11/30/2022]
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10
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Choi E, Barnard J, Horns J, Paudel N, Das R, Yafi F, Hotaling J. Acne, Folliculitis and Post-Operative Infection Rates of Penile Prosthetic Implants. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.374] [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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Abstract
Management of acute Type A aortic dissection can be complicated by patient comorbidities. We describe the case of a 29-year-old female with preexisting peripartum cardiomyopathy who developed a Type A dissection. Surgery was performed and venoarterial extracorporeal membrane oxygenation (ECMO) was instituted. She left hospital on the 71st postoperative day. It is extremely rare for a patient with cardiomyopathy to develop an aortic dissection. Deferring this patient's surgery to an ECMO center was crucial for her survival.
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Affiliation(s)
- Tania Tabassum
- Department of Cardiac Surgery, Manchester University National Health Service Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Andrew Brazier
- Department of Cardiac Surgery, Manchester University National Health Service Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Miguel Garcia
- Department of Cardiac Anaesthesia, Manchester University National Health Service Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Victoria Pettemerides
- Department of Cardiology, Manchester University National Health Service Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - James Barnard
- Department of Cardiac Surgery, Manchester University National Health Service Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
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McMenamin L, Brown FE, Arora M, Barnard J, Smith LE, Stockell DJ, Tung P, Wakefield RJ, Weerasinghe A, Wolstenhulme S. Twelve tips for integrating ultrasound guided peripheral intravenous access clinical skills teaching into undergraduate medical education. Med Teach 2021; 43:1010-1018. [PMID: 33161823 DOI: 10.1080/0142159x.2020.1841127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Peripheral Intravenous access (PIV) is a procedure undertaken by Medical Practitioners and Non-Medical Practitioners. Traditional PIV uses a visual and tactile technique to locate blood vessels close to the surface of the skin. Chronic medical conditions, dehydration, obesity and recurrent intravenous access can make PIV challenging. Ultrasound (US) guided PIV is recommended to aid the identification of the arm arteries and veins and improve the success rate of needle placement in difficult cases. Medical and non-medical schools, and hospital organisations, are recognising the importance of US guided PIV education for undergraduate and postgraduate Medical and Non-Medical Practitioners. This to promote independence, efficiency and to improve patient safety. The aim of this 12 tips article is to highlight the considerations and practicalities of integrating and delivering, a practical based skills (PBS) session, on the use of US guided practice as an adjunct in difficult PIV, into the undergraduate medical education curricula.
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Affiliation(s)
- Luke McMenamin
- Department of Anaesthesia, Leeds Teaching Hospitals NHS Trust, Leeds, UK
- Leeds Institute of Medical Education, University of Leeds, Leeds, UK
| | - Fiona E Brown
- James Cook University Teaching Hospital, South Tees Hospitals NHS Foundation Trust Middlesbrough, UK
| | - Mohit Arora
- Department of Emergency Medicine, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - James Barnard
- Leeds Institute of Medical Education, University of Leeds, Leeds, UK
| | - Laura E Smith
- Leeds Institute of Medical Education, University of Leeds, Leeds, UK
| | - David J Stockell
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Patrick Tung
- Department of Emergency Medicine, Dewsbury and District Hospital, Mid Yorkshire Hospitals NHS Trust, Wakefield, UK
| | - Richard J Wakefield
- Department of Rheumatology, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Asoka Weerasinghe
- Department of Emergency Medicine, Dewsbury and District Hospital, Mid Yorkshire Hospitals NHS Trust, Wakefield, UK
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Shen BB, Zhang Z, Yuan JJ, Zheng A, Zeng S, Gao JQ, Bao W, Barnard J, Wang H, Fang WJ. Formation of an Unprecedented Impurity during CE-SDS Analysis of a Recombinant Protein. Pharm Res 2020; 37:228. [PMID: 33098017 DOI: 10.1007/s11095-020-02947-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 10/05/2020] [Indexed: 10/23/2022]
Abstract
PURPOSES The main purposes of this article are to describe an unprecedented phenomenon in which significant amount of a shoulder peak impurity was observed during normal non-reducing capillary electrophoresis-sodium dodecyl sulfate (CE-SDS) analysis of a recombinant fusion protein X, and to evaluate the root cause for this phenomenon. METHODS A series of experiments were conducted to study the nature of this degradation. Effects of iodoacetamide (IAM), heating temperature, duration, and SDS on the formation of this specific impurity were evaluated using a variety of characterization techniques. RESULTS The formation of the impurity as observed in CE-SDS was actually due to alkylation of lysine and serine residues with IAM, as confirmed by peptide mapping and LC-MS/MS, which increased the molecular weight and therefore decreased the electrophoretic mobility. The amount of impurity was also strongly dependent on sample preparation conditions including the presence or absence of SDS. CONCLUSIONS Our study clearly suggested that even though IAM has been used extensively as an alkylation reagent in the traditional non-reducing CE-SDS analysis of monoclonal antibodies and other proteins, alkylation with IAM could potentially lead to additional impurity peak, and therefore complicating analysis. Therefore, before performing CE-SDS and other analyses, the effects of sample preparation procedures on analytical results must be evaluated. For protein X, IAM should be excluded for CE-SDS analysis.
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Affiliation(s)
- Bin-Bin Shen
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.,Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Zhongwei Zhang
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.,Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310016, China
| | - Jun-Jie Yuan
- Zhejiang Hisun Bioray Biopharmaceutical Co., Ltd, Taizhou, Zhejiang, 318000, China
| | - Aiping Zheng
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, 100850, China
| | - Su Zeng
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jian-Qing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wenhan Bao
- School of Life Sciences, Shandong University, Qingdao, 266237, China
| | - James Barnard
- Drug Product Development, Biological, Allergan, Irvine, California, 92612, USA
| | - Haibin Wang
- Zhejiang Hisun Bioray Biopharmaceutical Co., Ltd, Taizhou, Zhejiang, 318000, China
| | - Wei-Jie Fang
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China. .,Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310016, China.
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Mantripragada V, Carson E, Krebs O, Simmons H, Barnard J, Muschler G. Automated high throughput selection and expansion of clonal cell populations to improve cartilage cell therapy products. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Qian C, Wang G, Wang X, Barnard J, Gao JQ, Bao W, Wang H, Li F, Ingle RG, Fang WJ. Formation of protein sub-visible particles during powder grinding of a monoclonal antibody. Eur J Pharm Biopharm 2020; 149:1-11. [DOI: 10.1016/j.ejpb.2020.01.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 01/21/2020] [Accepted: 01/25/2020] [Indexed: 11/28/2022]
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Bongomin F, Otu A, Calisti G, Richardson MD, Barnard J, Venkateswaran R, Vergidis P. Trichosporon japonicum Fungemia and Ventricular Assist Device Infection in an Immunocompetent Patient. Open Forum Infect Dis 2019; 6:ofz343. [PMID: 31660411 PMCID: PMC6761985 DOI: 10.1093/ofid/ofz343] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/22/2019] [Indexed: 11/15/2022] Open
Abstract
Trichosporon species are emerging opportunistic yeasts that cause life-threatening disseminated disease in severely immunocompromised patients. Trichosporon japonicum is a very rare cause of invasive trichosporonosis. We describe a case of Trichosporon japonicum fungemia in an immunocompetent patient with a transcutaneous biventricular assist device.
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Affiliation(s)
- Felix Bongomin
- Department of Medical Microbiology & Immunology, Faculty of Medicine, Gulu University, Gulu, Uganda
| | - Akaninyene Otu
- Department of Infectious Diseases, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK; The University of Manchester, Manchester, UK
| | - Giorgio Calisti
- Department of Microbiology, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Malcolm D Richardson
- Mycology Reference Centre Manchester, ECMM Centre of Excellence in Clinical and Laboratory Mycology and Clinical Studies, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - James Barnard
- Department of Cardiothoracic Surgery, Wythenshawe Hospital Manchester University NHS Foundation Trust, Manchester, UK
| | - Rajamiyer Venkateswaran
- Department of Cardiothoracic Surgery, Wythenshawe Hospital Manchester University NHS Foundation Trust, Manchester, UK.,Division of Cardiovascular Sciences, The University of Manchester, Manchester, UK
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Barnard J, Sharman A, Brazier A. Bomb blast shrapnel trauma to the main pulmonary artery: learning points to achieve a safe outcome. Eur J Cardiothorac Surg 2019; 55:1015-1016. [PMID: 30272165 DOI: 10.1093/ejcts/ezy326] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/12/2018] [Accepted: 08/31/2018] [Indexed: 11/14/2022] Open
Abstract
A 47-year-old patient was injured in a bomb blast and sustained trauma due to multiple fragments of shrapnel from a terrorist explosive device. We report on the surgery required to safely remove a piece of shrapnel from the anterior wall of the main pulmonary artery (PA). A chest X-ray revealed a left-sided haemothorax. A computed tomography scan confirmed the trajectory and position of a metal bolt that had lodged between the main PA and the aortic arch. At surgery, a limited left anterior thoracotomy was performed initially. A significant quantity of blood was observed in the pericardium, and the incision was extended to perform a hemi-clamshell incision with a transverse division of the sternum. Cardiopulmonary bypass (CPB) was initiated before prizing the shrapnel from a haematoma involving the front wall of the main PA. The use of the CPB prevented uncontrolled haemorrhage, and the injury to the wall was successfully repaired. The patient subsequently developed acute respiratory distress syndrome and required a prolonged period of ventilation but made a full recovery after multiple further surgeries to remove the shrapnel from his neck and legs, having been injured by 11 pieces of the shrapnel in total.
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Affiliation(s)
- James Barnard
- Department of Cardiac Surgery, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, UK
| | - Anna Sharman
- Department of Radiology, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, UK
| | - Andrew Brazier
- Department of Cardiac Surgery, Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, UK
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Haunschild J, Schellinger N, Barnard J, von Aspern K, Mohr FW, Etz D. miR 29 and MMP-2 in the Proximal Aortic Aneurysm of BAV Patients: Worth a Try? Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678971] [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: 10/27/2022]
Affiliation(s)
- J. Haunschild
- Saxonian Incubator for Clinical Translation, University of Leipzig, Leipzig, Germany
| | - N. Schellinger
- Department of Internal Medicine (Endocrinology and Nephrology), University of Leipzig, Leipzig, Germany
| | - J. Barnard
- Saxonian Incubator for Clinical Translation, University of Leipzig, Leipzig, Germany
| | - K. von Aspern
- University of Leipzig, Cardiac Surgery, Leipzig, Germany
| | - F.-W. Mohr
- University of Leipzig, Cardiac Surgery, Leipzig, Germany
| | - D. Etz
- University of Leipzig, Cardiac Surgery, Leipzig, Germany
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Varga E, Hauduc H, Barnard J, Dunlap P, Jimenez J, Menniti A, Schauer P, Lopez Vazquez CM, Gu AZ, Sperandio M, Takács I. Recent advances in bio-P modelling - a new approach verified by full-scale observations. Water Sci Technol 2018; 78:2119-2130. [PMID: 30629540 DOI: 10.2166/wst.2018.490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This paper summarizes recent developments in biological phosphorus removal modelling, with special attention to side-stream enhanced biological phosphorus removal (S2EBPR) systems on which previous models proved to be ineffective without case-by-case parameter adjustments. Through the research and experience of experts and practitioners, a new bio-kinetic model was developed including an additional group of biomass (glycogen accumulating organisms - GAOs) and new processes (such as aerobic and anoxic maintenance for PAO and GAO; enhanced denitrification processes; fermentation by PAOs which - along with PAO selection - is driven by oxidation-reduction potential (ORP)). This model successfully described various conditions in laboratory measurements and full plant data. The calibration data set is provided by Clean Water Services from Rock Creek Facility (Hillsboro, OR) including two parallel trains: conventional A2O and Westbank configurations, allowing the model to be verified on conventional and side-stream EBPR systems as well.
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Affiliation(s)
- Erika Varga
- LISBP, INSA Toulouse, 135 av. de Rangueil 31077, Toulouse, France E-mail: ; Dynamita, 7 Lieut-dit Eoupe, La Redoute, 26110 Nyons, France
| | - Hélène Hauduc
- Dynamita, 7 Lieut-dit Eoupe, La Redoute, 26110 Nyons, France
| | - James Barnard
- Black and Veatch, 8400 Ward Parkway, Kansas City, MO 64114, USA
| | - Patrick Dunlap
- Black and Veatch, 8400 Ward Parkway, Kansas City, MO 64114, USA
| | - Jose Jimenez
- Brown and Caldwell, 2301 Lucien Way, Suite 250, Maitland, FL, USA
| | - Adrienne Menniti
- Clean Water Services, 16060 SW 85th Av. Tigard, Oregon 97224, USA
| | - Peter Schauer
- Clean Water Services, 16060 SW 85th Av. Tigard, Oregon 97224, USA
| | | | - April Z Gu
- Cornell University, 263 Hollister Hall, Ithaca, NY, USA and Northeastern University, 360 Huntington Ave, Boston, MA 02115, USA
| | - Mathieu Sperandio
- LISBP, INSA Toulouse, 135 av. de Rangueil 31077, Toulouse, France E-mail:
| | - Imre Takács
- Dynamita, 7 Lieut-dit Eoupe, La Redoute, 26110 Nyons, France
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Mehta V, Hasan J, Callan P, Shaw S, Williams S, Dimarakis I, Barnard J, Venkateswaran R. Extra Corporeal Membrane Oxygenation (ECMO) for Primary Graft Dysfunction Following Heart Transplantation: A Single Centre Experience. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.891] [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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Mehta V, Hasan J, Salaie J, Milser E, Santhanakrishnan K, Al-Aloul M, Dimarakis I, Barnard J, Venkateswaran R. Comparison of Extra Corporeal Membrane Oxygenation versus Cardiopulmonary Bypass Support for Lung Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1200] [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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Mehta V, Hasan J, Callan P, Shaw S, Williams S, Dimarakis I, Barnard J, Venkateswaran R. Outcome of Centrimag Extracorporeal Mechanical Circulatory Support Use in Critical Cardiogenic Shock (INTERMACS 1) Patients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.716] [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: 10/17/2022] Open
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Charlesworth M, Hernandez A, Feddy L, Barker J, Shaw S, Barnard J, Venkateswaran R. Post-cardiotomy extra corporeal life support (ECLS) for refractory cardiogenic shock: a 4-year retrospective case-note audit in South Manchester, UK. J Cardiothorac Vasc Anesth 2017. [DOI: 10.1053/j.jvca.2017.02.172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zeidan AM, Al Ali N, Barnard J, Padron E, Lancet JE, Sekeres MA, Steensma DP, DeZern A, Roboz G, Jabbour E, Garcia-Manero G, List A, Komrokji R. Comparison of clinical outcomes and prognostic utility of risk stratification tools in patients with therapy-related vs de novo myelodysplastic syndromes: a report on behalf of the MDS Clinical Research Consortium. Leukemia 2017; 31:1391-1397. [PMID: 28111463 DOI: 10.1038/leu.2017.33] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/30/2016] [Accepted: 01/09/2017] [Indexed: 01/01/2023]
Abstract
While therapy-related (t)-myelodysplastic syndromes (MDS) have worse outcomes than de novo MDS (d-MDS), some t-MDS patients have an indolent course. Most MDS prognostic models excluded t-MDS patients during development. The performances of the International Prognostic Scoring System (IPSS), revised IPSS (IPSS-R), MD Anderson Global Prognostic System (MPSS), WHO Prognostic Scoring System (WPSS) and t-MDS Prognostic System (TPSS) were compared among patients with t-MDS. Akaike information criteria (AIC) assessed the relative goodness of fit of the models. We identified 370 t-MDS patients (19%) among 1950 MDS patients. Prior therapy included chemotherapy alone (48%), chemoradiation (31%), and radiation alone in 21%. Median survival for t-MDS patients was significantly shorter than for d-MDS (19 vs 46 months, P<0.005). All models discriminated survival in t-MDS (P<0.005 for each model). Patients with t-MDS had a significantly higher hazard of death relative to d-MDS in every risk model, and had inferior survival compared to patients with d-MDS within all risk group categories. AIC Scores (lower is better) were 2316 (MPSS), 2343 (TPSS), 2343 (IPSS-R), 2361 (WPSS) and 2364 (IPSS). In conclusion, subsets of t-MDS patients with varying clinical outcomes can be identified using conventional risk stratification models. The MPSS, TPSS and IPSS-R provide the best predictive power.
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Affiliation(s)
- A M Zeidan
- Section of Hematology, Department of Internal Medicine, Yale University, and Yale Comprehensive Cancer Center, New Haven, CT, USA
| | - N Al Ali
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - J Barnard
- Department of Hematology and Medical Oncology, Leukemia Program, Cleveland Clinic, Cleveland, OH, USA
| | - E Padron
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - J E Lancet
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - M A Sekeres
- Department of Hematology and Medical Oncology, Leukemia Program, Cleveland Clinic, Cleveland, OH, USA
| | - D P Steensma
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - A DeZern
- Department of Medicine, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University, Baltimore, MD, USA
| | - G Roboz
- Department of Medicine, Division of Hematology and Oncology, Weill Medical College of Cornell University, New York, NY, USA
| | - E Jabbour
- Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - G Garcia-Manero
- Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - A List
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - R Komrokji
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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Chapman SJ, Drake TM, Bolton WS, Barnard J, Bhangu A. Longitudinal analysis of reporting and quality of systematic reviews in high-impact surgical journals. Br J Surg 2016; 104:198-204. [PMID: 28001294 DOI: 10.1002/bjs.10423] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 08/02/2016] [Accepted: 10/06/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) Statement aims to optimize the reporting of systematic reviews. The performance of the PRISMA Statement in improving the reporting and quality of surgical systematic reviews remains unclear. METHODS Systematic reviews published in five high-impact surgical journals between 2007 and 2015 were identified from online archives. Manuscripts blinded to journal, publication year and authorship were assessed according to 27 reporting criteria described by the PRISMA Statement and scored using a validated quality appraisal tool (AMSTAR, Assessing the Methodological Quality of Systematic Reviews). Comparisons were made between studies published before (2007-2009) and after (2011-2015) its introduction. The relationship between reporting and study quality was measured using Spearman's rank test. RESULTS Of 281 eligible manuscripts, 80 were published before the PRISMA Statement and 201 afterwards. Most manuscripts (208) included a meta-analysis, with the remainder comprising a systematic review only. There was no meaningful change in median compliance with the PRISMA Statement (19 (i.q.r. 16-21) of 27 items before versus 19 (17-22) of 27 after introduction of PRISMA) despite achieving statistical significance (P = 0·042). Better reporting compliance was associated with higher methodological quality (rs = 0·70, P < 0·001). CONCLUSION The PRISMA Statement has had minimal impact on the reporting of surgical systematic reviews. Better compliance was associated with higher-quality methodology.
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Affiliation(s)
- S J Chapman
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
| | - T M Drake
- University of Sheffield Medical School, Sheffield, UK
| | - W S Bolton
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
| | - J Barnard
- University of Leeds Medical School, Leeds, UK
| | - A Bhangu
- Department of Colorectal Surgery, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
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Hernández-Díaz J, Quintero-Ramos A, Barnard J, Balandrán-Quintana R. Functional Properties of Extrudates Prepared with Blends of Wheat Flour/Pinto Bean Meal with Added Wheat Bran. FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/1082013207082463] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Blends made of wheat flour and bean meal at various levels of moisture and bran content, were subjected to extrusion cooking by varying temperature and screw speed. Extrudates were analysed for expansion index, bulk density, apparent viscosity, water absorption index and water solubility index using a second-order rotatable central composite design. Excepting water absorption index, functional properties were significantly affected ( p<0.05) by levels of moisture, bran or extrusion conditions. Expansion index decreased with increasing levels of moisture in the blends; for bran the effect was the inverse. Response surface solution for apparent viscosity was maximum at 24% levels of moisture, 209r.p.m., 180°C and 10% bran. For water absorption index the response surface solution was a saddle point, with a minimum at 29% levels of moisture, 232r.p.m., 177°C and 25% bran. The higher apparent viscosity and lower absorption index reflected minor damage to starch and proteins, which was attributed to a protective role of the added fibre.
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Affiliation(s)
- J.R. Hernández-Díaz
- Facultad de Ciencias Químicas, Secretaría de Investigación y Postgrado, Universidad Autónoma de Chihuahua Cd. Universitaria s/n. A. P. 1542-C. Chihuahua, Chihuahua, 31170, México
| | - A. Quintero-Ramos
- Facultad de Ciencias Químicas, Secretaría de Investigación y Postgrado, Universidad Autónoma de Chihuahua Cd. Universitaria s/n. A. P. 1542-C. Chihuahua, Chihuahua, 31170, México
| | - J. Barnard
- Department of Food Science & Technology, Cornell Univ., W. North St, NYSAES, Geneva, NY 14456
| | - R.R. Balandrán-Quintana
- Facultad de Ciencias Químicas, Secretaría de Investigación y Postgrado, Universidad Autónoma de Chihuahua Cd. Universitaria s/n. A. P. 1542-C. Chihuahua, Chihuahua, 31170, México,
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Heward E, Hayes T, Evison M, Booton R, Barnard J, Shah R. Extracorporeal Membrane Oxygenation Assisted Segmentectomy for Metachronous Lung Cancer After Pneumonectomy. Ann Thorac Surg 2016; 102:e187-e189. [DOI: 10.1016/j.athoracsur.2016.01.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 12/21/2015] [Accepted: 01/18/2016] [Indexed: 12/01/2022]
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Abstract
This study explored the use of a multi-rater social behavior scale with a diverse sample of preschoolers to test the influence of demographic, family status, and language ability variables on the rated frequency and functional importance of prosocial and problem behaviors. Major results from the teachers' ratings of behavior indicated (a) significant differences between boys and girls in that the average girl exhibited more prosocial behaviors and the average boy more problem behaviors; (b) significant differences for language ability; those preschoolers with excellent language ability showed more prosocial skills and fewer problem behaviors than did children with average or poor language; and (c) differences among families depending on the work status of mothers and fathers. The results of the parents' ratings indicated similar patterns as teachers and also suggested differences in social behavior between White and Black preschoolers. Although the overall perceptions of preschoolers' social behavior were similar as rated by parents and teachers, the correlation between their frequency and importance ratings on specific behavior items were moderately low at best. These data were interpreted to reinforce the practice of acquiring cross-informant ratings of preschoolers and to support the validity of the Social Skills Rating System.
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Barnard J, Ledger A. Practical tips for undertaking a medical education research project at undergraduate level: Recommendations for both students and supervisors. MedEdPublish 2016. [DOI: 10.15694/mep.2016.000027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This article was migrated. The article was not marked as recommended. Many undergraduate medical programmes now require students to develop research and medical students are increasingly choosing to undertake medical education projects at undergraduate level. As medical education research often requires different ways of thinking about knowledge and research compared with biomedical disciplines, undergraduate medical education research can be challenging for students and supervisors alike. This paper aims to address a gap in the literature, by providing recommendations for both students and supervisors involved in undergraduate medical education research. Our practical tips are based upon reflections and insights from an undergraduate student who undertook a medical education research project and an experienced undergraduate research supervisor. The importance of good organisational, time management and communication skills are highlighted. Students should recognise and make the most of the unique learning opportunities that are present when undertaking a medical education research project and supervisors should be attentive and supportive of their individual students' needs.
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Rangel-Moreno J, Wang W, Owen T, Barnard J, Klebanov B, Landesman Y, Tamir S, Shacham S, Anolik J. THU0263 Kpt-350, A Selective Inhibitor of Nuclear Export (SINE) Compound, Effectively Reduces Interferon-Alpha Activation and Autoreactive Plasma Cells in Murine Lupus. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2097] [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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Mehta V, Hasan J, Oommen K, Shaw S, Williams S, Barnard J, Yonan N, Venkateswaran R. Outcome of CentriMag Extracorporeal Mechanical Circulatory Support Use in Critical Cardiogenic Shock (INTERMACS 1) Patients. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.907] [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] Open
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Chapman S, Drake T, Barnard J, Bhangu A. Adherence to prisma criteria in surgical literature is sub-optimal. Int J Surg 2015. [DOI: 10.1016/j.ijsu.2015.07.328] [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]
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Zeidan AM, Sekeres MA, Garcia-Manero G, Steensma DP, Zell K, Barnard J, Ali NA, Zimmerman C, Roboz G, DeZern A, Nazha A, Jabbour E, Kantarjian H, Gore SD, Maciejewski JP, List A, Komrokji R. Comparison of risk stratification tools in predicting outcomes of patients with higher-risk myelodysplastic syndromes treated with azanucleosides. Leukemia 2015; 30:649-57. [PMID: 26464171 DOI: 10.1038/leu.2015.283] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 08/06/2015] [Accepted: 08/10/2015] [Indexed: 01/06/2023]
Abstract
Established prognostic tools in patients with myelodysplastic syndromes (MDS) were largely derived from untreated patient cohorts. Although azanucleosides are standard therapies for higher-risk (HR)-MDS, the relative prognostic performance of existing prognostic tools among patients with HR-MDS receiving azanucleoside therapy is unknown. In the MDS Clinical Research Consortium database, we compared the prognostic utility of the International Prognostic Scoring System (IPSS), revised IPSS (IPSS-R), MD Anderson Prognostic Scoring System (MDAPSS), World Health Organization-based Prognostic Scoring System (WPSS) and the French Prognostic Scoring System (FPSS) among 632 patients who presented with HR-MDS and were treated with azanucleosides as the first-line therapy. Median follow-up from diagnosis was 15.7 months. No prognostic tool predicted the probability of achieving an objective response. Nonetheless, all five tools were associated with overall survival (OS, P=0.025 for the IPSS, P=0.011 for WPSS and P<0.001 for the other three tools). The corrected Akaike Information Criteria, which were used to compare OS with the different prognostic scoring systems as covariates (lower is better) were 4138 (MDAPSS), 4156 (FPSS), 4196 (IPSS-R), 4186 (WPSS) and 4196 (IPSS). Patients in the highest-risk groups of the prognostic tools had a median OS from diagnosis of 11-16 months and should be considered for up-front transplantation or experimental approaches.
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Affiliation(s)
- A M Zeidan
- Department of Internal Medicine, Section of Hematology, Yale Comprehensive Cancer Center, Yale University, New Haven, CT, USA
| | - M A Sekeres
- Leukemia Program, Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, USA
| | - G Garcia-Manero
- Department of leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - D P Steensma
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - K Zell
- Leukemia Program, Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, USA
| | - J Barnard
- Leukemia Program, Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, USA
| | - N A Ali
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - C Zimmerman
- Leukemia Program, Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, USA
| | - G Roboz
- Department of Medicine, Weill Medical College of Cornell University, New York, NY, USA
| | - A DeZern
- Department of Medicine, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University, Baltimore, MD, USA
| | - A Nazha
- Leukemia Program, Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, USA
| | - E Jabbour
- Department of leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - H Kantarjian
- Department of leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - S D Gore
- Department of Internal Medicine, Section of Hematology, Yale Comprehensive Cancer Center, Yale University, New Haven, CT, USA
| | - J P Maciejewski
- Leukemia Program, Department of Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, OH, USA
| | - A List
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - R Komrokji
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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Wu M, Barnard J, Kundu S, McCrae KR. A novel pathway of cellular activation mediated by antiphospholipid antibody-induced extracellular vesicles. J Thromb Haemost 2015; 13:1928-40. [PMID: 26264622 PMCID: PMC4877623 DOI: 10.1111/jth.13072] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 07/29/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Elevated levels of endothelial cell (EC)-derived extracellular vesicles (EVs) circulate in patients with antiphospholipid antibodies (APLAs), and APLAs, particularly those against β2 -glycoprotein I (β2 GPI), stimulate EV release from ECs. However, the effects of EC-derived EVs have not been characterized. OBJECTIVE To determine the mechanism by which EVs released from ECs by anti-β2 GPI antibodies activate unstimulated ECs. PATIENTS/METHODS We used interleukin (IL)-1 receptor inhibitors, small interfering RNA (siRNA) against Toll-like receptors (TLRs) and microRNA (miRNA) profiling to assess the mechanism(s) by which EVs released from ECs exposed to anti-β2 GPI antibodies activated unstimulated ECs. RESULTS AND CONCLUSIONS Anti-β2 GPI antibodies caused formation of an EC inflammasome and the release of EVs that were enriched in mature IL-1β, had a distinct miRNA profile, and caused endothelial activation. However, activation was not inhibited by an IL-1β antibody, an IL-1 receptor antagonist, or IL-1 receptor siRNA. EC activation by EVs required IL-1 receptor-associated kinase 4 phosphorylation, and was inhibited by pretreatment of cells with TLR7 siRNA or RNase A, which degrades ssRNA. Profiling of miRNA in EVs released from ECs incubated with β2 GPI and either control IgG or anti-β2 GPI antibodies revealed numerous differences in the content of specific miRNAs, including a significant decrease in mIR126. These observations demonstrate that, although anti-β2 GPI-derived endothelial EVs contain IL-1β, they activate unstimulated ECs through a TLR7-dependent and ssRNA-dependent pathway. Alterations in miRNA content may contribute to the ability of EVs derived from ECs exposed to anti-β2 GPI antibodies to activate unstimulated ECs in an autocrine or paracrine manner.
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Affiliation(s)
- M Wu
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - J Barnard
- Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH, USA
| | - S Kundu
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - K R McCrae
- Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH, USA
- Hematology and Solid Tumor Oncology, Cleveland Clinic, Cleveland, OH, USA
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Barnard J, Grant SW, Hickey GL, Bridgewater B. Is social deprivation an independent predictor of outcomes following cardiac surgery? An analysis of 240,221 patients from a national registry. BMJ Open 2015; 5:e008287. [PMID: 26124512 PMCID: PMC4486967 DOI: 10.1136/bmjopen-2015-008287] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES Social deprivation impacts on healthcare outcomes but is not included in the majority of cardiac surgery risk prediction models. The objective was to investigate geographical variations in social deprivation of patients undergoing cardiac surgery and identify whether social deprivation is an independent predictor of outcomes. METHODS National Adult Cardiac Surgery Audit data for coronary artery bypass graft (CABG), or valve surgery performed in England between April 2003 and March 2013, were analysed. Base hospitals in England were divided into geographical regions. Social deprivation was measured by quintile groups of the index of multiple deprivation (IMD) score with the first quintile group (Q1) being the least, and the last quintile group (Q5) the most deprived group. In-hospital mortality and midterm survival were analysed using mixed effects logistic, and stratified Cox proportional hazards regression models respectively. RESULTS 240,221 operations were analysed. There was substantial regional variation in social deprivation with the proportion of patients in IMD Q5 ranging from 34.5% in the North East to 6.5% in the East of England. Following adjustment for preoperative risk factors, patients undergoing all cardiac surgery in IMD Q5 were found to have an increased risk of in-hospital mortality relative to IMD Q1 (OR=1.13; 95%CI 1.03 to 1.24), as were patients undergoing isolated CABG (OR=1.19; 95%CI 1.03 to 1.37). For midterm survival, patients in IMD Q5 had an increased hazard in all groups (HRs ranged between 1.10 (valve+CABG) and 1.26 (isolated CABG)). For isolated CABG, the median postoperative length of stay was 6 and 7 days, respectively, for IMD Q1-Q4 and Q5. CONCLUSIONS Significant regional variation exists in the social deprivation of patients undergoing cardiac surgery in England. Social deprivation is associated with an increased risk of in-hospital mortality and reduced midterm survival. These findings have implications for health service provision, risk prediction models and analyses of surgical outcomes.
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Affiliation(s)
- James Barnard
- Department of Cardiothoracic Surgery, University of Manchester, Manchester Academic Health Science Centre, University Hospital of South Manchester, Manchester, UK
| | - Stuart W Grant
- Department of Cardiothoracic Surgery, University of Manchester, Manchester Academic Health Science Centre, University Hospital of South Manchester, Manchester, UK
- National Institute for Cardiovascular Outcomes Research (NICOR), University College London, Institute of Cardiovascular Science, London, UK
- Academic Surgery Unit, University of Manchester, Manchester Academic Health Science Centre, Education and Research Centre, Manchester, UK
| | - Graeme L Hickey
- National Institute for Cardiovascular Outcomes Research (NICOR), University College London, Institute of Cardiovascular Science, London, UK
- Academic Surgery Unit, University of Manchester, Manchester Academic Health Science Centre, Education and Research Centre, Manchester, UK
- Department of Epidemiology and Population Health, University of Liverpool, Institute of Infection and Global Health, The Farr Institute@HeRC, Liverpool, UK
| | - Ben Bridgewater
- Department of Cardiothoracic Surgery, University of Manchester, Manchester Academic Health Science Centre, University Hospital of South Manchester, Manchester, UK
- National Institute for Cardiovascular Outcomes Research (NICOR), University College London, Institute of Cardiovascular Science, London, UK
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Bott G, Barnard J, Prior K. Maritime in transit care. J R Nav Med Serv 2015; 101:104-106. [PMID: 26867404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Operation GRITROCK saw the first operational deployment of the Maritime In Transit Care team from the Role 2 (Enhanced) (R2(E)) Medical Treatment Facility, which is able to provide Damage Control Surgery and the limited holding of patients, situated on board RFA ARGUS. Whilst the Medical Emergency Response Team demonstrated the capability of advanced military Pre-Hospital Emergency Care (PHEC) on Op HERRICK, the need to provide a similar high level of care on contingency operations was recognised. Op GRITROCK allowed for the continued exploration of a maritime capability from an established R2(E) platform whilst providing medical evacuation capability for a significant population at risk distributed over a large Joint Operation Area. Although the patient load during the operation was low, key lessons were learnt and opportunities identified to further develop the newly recognised sub-speciality of PHEC, both medically and logistically, and these will be discussed in this article.
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Visconte V, Avishai N, Mahfouz R, Tabarroki A, Cowen J, Sharghi-Moshtaghin R, Hitomi M, Rogers HJ, Hasrouni E, Phillips J, Sekeres MA, Heuer AH, Saunthararajah Y, Barnard J, Tiu RV. Distinct iron architecture in SF3B1-mutant myelodysplastic syndrome patients is linked to an SLC25A37 splice variant with a retained intron. Leukemia 2014; 29:188-95. [PMID: 24854990 DOI: 10.1038/leu.2014.170] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/10/2014] [Accepted: 05/19/2014] [Indexed: 12/18/2022]
Abstract
Perturbation in iron homeostasis is a hallmark of some hematologic diseases. Abnormal sideroblasts with accumulation of iron in the mitochondria are named ring sideroblasts (RS). RS is a cardinal feature of refractory anemia with RS (RARS) and RARS with marked thrombocytosis (RARS/-T). Mutations in SF3B1, a member of the RNA splicing machinery are frequent in RARS/-T and defects of this gene were linked to RS formation. Here we showcase the differences in iron architecture of SF3B1-mutant and wild-type (WT) RARS/-T and provide new mechanistic insights by which SF3B1 mutations lead to differences in iron. We found higher iron levels in SF3B1 mutant vs WT RARS/-T by transmission electron microscopy/spectroscopy/flow cytometry. SF3B1 mutations led to increased iron without changing the valence as shown by the presence of Fe(2+) in mutant and WT. Reactive oxygen species and DNA damage were not increased in SF3B1-mutant patients. RNA-sequencing and Reverse transcriptase PCR showed higher expression of a specific isoform of SLC25A37 in SF3B1-mutant patients, a crucial importer of Fe(2+) into the mitochondria. Our studies suggest that SF3B1 mutations contribute to cellular iron overload in RARS/-T by deregulating SLC25A37.
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Affiliation(s)
- V Visconte
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - N Avishai
- Department of Materials Science and Engineering, Swagelok Center for Surface Analysis of Materials, Case Western Reserve University, Cleveland, OH, USA
| | - R Mahfouz
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - A Tabarroki
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - J Cowen
- Department of Materials Science and Engineering, Swagelok Center for Surface Analysis of Materials, Case Western Reserve University, Cleveland, OH, USA
| | - R Sharghi-Moshtaghin
- Department of Materials Science and Engineering, Swagelok Center for Surface Analysis of Materials, Case Western Reserve University, Cleveland, OH, USA
| | - M Hitomi
- Electron Microscopy Facility, Case Western Reserve University, Cleveland, OH, USA
| | - H J Rogers
- Department of Clinical Pathology, Cleveland Clinic, Cleveland, OH, USA
| | - E Hasrouni
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - J Phillips
- Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - M A Sekeres
- 1] Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA [2] Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - A H Heuer
- Department of Materials Science and Engineering, Swagelok Center for Surface Analysis of Materials, Case Western Reserve University, Cleveland, OH, USA
| | - Y Saunthararajah
- 1] Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA [2] Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - J Barnard
- Department of Quantitative Health Sciences, Cleveland Clinic, OH, USA
| | - R V Tiu
- 1] Department of Translational Hematology and Oncology Research, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA [2] Leukemia Program, Department of Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
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van Duin D, Avery RK, Hemachandra S, Yen-Lieberman B, Zhang A, Jain A, Butler RS, Barnard J, Schold JD, Fung J, Askar M. KIR and HLA interactions are associated with control of primary CMV infection in solid organ transplant recipients. Am J Transplant 2014; 14:156-62. [PMID: 24369024 DOI: 10.1111/ajt.12532] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cytomegalovirus (CMV) infection remains a major source of morbidity and mortality in solid organ transplant recipients. Killer immunoglobulin-like receptors(KIR) are genetically polymorphic natural killer(NK) cell receptors important in antiviral responses. A retrospective, single-center cohort study was performed to study the interaction of KIR genotype and primary control of CMV infection after transplantation.Time to first CMV viremia was determined for a cohort of 531 CMV serology donor positive/recipient negative solid organ transplant recipients. Of the KIR genes,KIR2DL3 and KIR2DS2 were most strongly associated with time to CMV viremia in random survival forest analysis. As KIR2DL3 and KIR2DS2 both interact with HLA-C1, these interactions were evaluated. Seventy six recipients were found to be positive for both KIR2DL3 and KIR2DS2 and expressed only HLA-C1 antigens in both recipient and donor. These patients had a substantially reduced hazard of CMV viremia in the first year after solid organ transplantation (hazard ratio 0.44, 95% CI 0.27–0.72, p=0.0012). In KIR2DL3+/KIR2DS2+/HLA-C1/1 recipients who received an organ from a non-C1/1 donor, this protective effect was not observed. These results improve our understanding of human NK cell function in primary CMV infection after transplant.
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Ganesh SK, Tragante V, Guo W, Guo Y, Lanktree MB, Smith EN, Johnson T, Castillo BA, Barnard J, Baumert J, Chang YPC, Elbers CC, Farrall M, Fischer ME, Franceschini N, Gaunt TR, Gho JMIH, Gieger C, Gong Y, Isaacs A, Kleber ME, Leach IM, McDonough CW, Meijs MFL, Mellander O, Molony CM, Nolte IM, Padmanabhan S, Price TS, Rajagopalan R, Shaffer J, Shah S, Shen H, Soranzo N, van der Most PJ, Van Iperen EPA, Van Setten J, Vonk JM, Zhang L, Beitelshees AL, Berenson GS, Bhatt DL, Boer JMA, Boerwinkle E, Burkley B, Burt A, Chakravarti A, Chen W, Cooper-DeHoff RM, Curtis SP, Dreisbach A, Duggan D, Ehret GB, Fabsitz RR, Fornage M, Fox E, Furlong CE, Gansevoort RT, Hofker MH, Hovingh GK, Kirkland SA, Kottke-Marchant K, Kutlar A, LaCroix AZ, Langaee TY, Li YR, Lin H, Liu K, Maiwald S, Malik R, Murugesan G, Newton-Cheh C, O'Connell JR, Onland-Moret NC, Ouwehand WH, Palmas W, Penninx BW, Pepine CJ, Pettinger M, Polak JF, Ramachandran VS, Ranchalis J, Redline S, Ridker PM, Rose LM, Scharnag H, Schork NJ, Shimbo D, Shuldiner AR, Srinivasan SR, Stolk RP, Taylor HA, Thorand B, Trip MD, van Duijn CM, Verschuren WM, Wijmenga C, Winkelmann BR, Wyatt S, Young JH, Boehm BO, Caulfield MJ, Chasman DI, Davidson KW, Doevendans PA, FitzGerald GA, Gums JG, Hakonarson H, Hillege HL, Illig T, Jarvik GP, Johnson JA, Kastelein JJP, Koenig W, Marz W, Mitchell BD, Murray SS, Oldehinkel AJ, Rader DJ, Reilly MP, Reiner AP, Schadt EE, Silverstein RL, Snieder H, Stanton AV, Uitterlinden AG, van der Harst P, van der Schouw YT, Samani NJ, Johnson AD, Munroe PB, de Bakker PIW, Zhu X, Levy D, Keating BJ, Asselbergs FW. Loci influencing blood pressure identified using a cardiovascular gene-centric array. Hum Mol Genet 2013. [DOI: 10.1093/hmg/ddt177] [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: 11/12/2022] Open
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Huang X, Barnard J, Spitznagel TM, Krishnamurthy R. Protein Covalent Dimer Formation Induced by Reversed-Phase HPLC Conditions. J Pharm Sci 2013; 102:842-51. [DOI: 10.1002/jps.23431] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Revised: 11/15/2012] [Accepted: 12/05/2012] [Indexed: 11/12/2022]
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Kim J, Lee JY, Lu T, Dunlap P, Shaw A, Barnard J, George B, Metz D. Nitrogen and Phosphorus Removal from Wastewater Effluent Using Green Microalga Chlorella vulgaris: Theoretical Understanding and Model Simulation. ACTA ACUST UNITED AC 2013. [DOI: 10.2175/193864713813692441] [Citation(s) in RCA: 2] [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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Kobylinski E, Barnard J, Massart N, Kleiwer A, Crabtree I, Wirth M, Foster J, Newton L, Phillips H. Starting up a 5-Stage Bardenpho Plant with In-Line Fermentation - One Step at a Time. ACTA ACUST UNITED AC 2013. [DOI: 10.2175/193864713813685647] [Citation(s) in RCA: 2] [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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Barnard J, Farmer B, Gherghetta T, White M. Natural gauge mediation with a Bino next-to-lightest supersymmetric particle at the LHC. Phys Rev Lett 2012; 109:241801. [PMID: 23368306 DOI: 10.1103/physrevlett.109.241801] [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] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Indexed: 06/01/2023]
Abstract
Natural models of supersymmetry with a gravitino lightest supersymmetric particle provide distinctive signatures at the LHC. For a neutralino next-to-lightest supersymmetric particle, sparticles can decay to two high energy photons plus missing energy. We use the ATLAS diphoton search with 4.8 b(-1) of data to place limits in both the top-squark-gluino and neutralino-chargino mass planes for this scenario. If the neutralino is heavier than 50 GeV, the lightest top squark must be heavier than 580 GeV, the gluino must be heavier than 1100 GeV, and charginos must be heavier than approximately 300-470 GeV. This provides the first nontrivial constraints in natural gauge mediation models with a neutralino next-to-lightest supersymmetric particle decaying to photons and implies a fine-tuning of at least a few percent in such models.
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Affiliation(s)
- James Barnard
- ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Melbourne, Victoria 3010, Australia
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Anolik JH, Palanichamy A, Bauer J, Barnard J, Biear J, Dedrick R, Sanz I, Liesveld J, Baechler E. B cells at the adaptive-innate immune system interface in SLE. Arthritis Res Ther 2012. [PMCID: PMC3467501 DOI: 10.1186/ar3958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Timur AA, Murugesan G, Zhang L, Aung PP, Barnard J, Wang QK, Gaussem P, Silverstein RL, Bhatt DL, Kottke-Marchant K. P2RY1 and P2RY12 polymorphisms and on-aspirin platelet reactivity in patients with coronary artery disease. Int J Lab Hematol 2012; 34:473-83. [PMID: 22574824 DOI: 10.1111/j.1751-553x.2012.01420.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Association of P2RY1 and P2RY12 polymorphisms with on-aspirin platelet reactivity was investigated. MATERIALS AND METHODS Platelet reactivity was assessed by the light transmission aggregometry and TxB(2) assay in 423 patients with coronary artery disease (CAD) on aspirin. High residual platelet reactivity (RPR) was defined by ≥20% and ≥70% maximal aggregation stimulated with 0.5 mg/mL arachidonic acid (AA) and 10 μm ADP, respectively. Moderate RPR was considered aggregation ≥20% with AA, ≥70% with ADP, or ≥1 ng/mL stimulated TxB(2) . Fourteen P2RY1 and 35 P2RY12 single nucleotide polymorphisms (SNPs) were genotyped. RESULTS High RPR was detected in 24% of the patients. Moderate RPR was observed in 31% with AA, 57% with 5 μm ADP, and 82% with 10 μm ADP. Stimulated TxB(2) was ≥1 ng/mL in 23% of patients. P2RY12 SNP rs9859538 was associated with high RPR (OR = 2.16, 95% CI = 1.24-3.75, P-value = 0.004). Four P2RY12 SNPs, rs1491974, rs10513398, rs3732765, and rs10935841, showed association with moderate RPR (OR = 1.79-2.94, P-value = 0.04-0.028), while five, rs7615865, rs1388623, rs1388622, rs7634096, and rs7637803, were associated with low RPR (OR = 0.50-0.55, P-value = 0.008-0.026), following ADP stimulation. TxB(2) level <1 ng/mL was linked to five P2RY1 SNPs, rs1439010, rs1371097, rs701265, rs12497578, and rs2312265 (OR = 0.36-0.54, P-value = 0.003-0.039). CONCLUSIONS Polymorphisms in P2RY1 and P2RY12 are associated with on-aspirin platelet reactivity in patients with CAD.
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Affiliation(s)
- A A Timur
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH 44195, USA
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Dong-Si T, Weber T, Richert N, Quinn G, Barnard J, Kooijmans-Coutinho M, Bozic C, Bloomgren G, Richman S, Clifford D. Classification of Natalizumab Cases with Progressive Multifocal Leukoencephalopathy (P07.058). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p07.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Abstract
While the mechanism of biological phosphorus removal (BPR) and the need for volatile fatty acids (VFA) have been well researched and documented to the point where it is now possible to design a plant with a very reliable phosphorus removal process using formal flow sheets, BPR is still observed in a number of plants that have no designated anaerobic zone, which was considered essential for phosphorus removal. Some examples are given in this paper. A theory is proposed and then applied to solve problems with a shortage of VFA in the influent of the Henderson NV plant. Mixed liquor was fermented in the anaerobic zone, which resulted in phosphorus removal to very low levels. This paper will discuss some of the background, and some case histories and applications, and present a simple postulation as to the mechanism and efforts at modelling the results.
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Affiliation(s)
- J Barnard
- Black & Veatch, Kansas City, MO 64114, USA.
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