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Nechaeva T, Verra L, Pucek J, Ranc L, Bergamaschi M, Zevi Della Porta G, Muggli P, Agnello R, Ahdida CC, Amoedo C, Andrebe Y, Apsimon O, Apsimon R, Arnesano JM, Bencini V, Blanchard P, Burrows PN, Buttenschön B, Caldwell A, Chung M, Cooke DA, Davut C, Demeter G, Dexter AC, Doebert S, Farmer J, Fasoli A, Fonseca R, Furno I, Granados E, Granetzny M, Graubner T, Grulke O, Gschwendtner E, Guran E, Henderson J, Kedves MÁ, Kim SY, Kraus F, Krupa M, Lefevre T, Liang L, Liu S, Lopes N, Lotov K, Martinez Calderon M, Mazzoni S, Moon K, Morales Guzmán PI, Moreira M, Okhotnikov N, Pakuza C, Pannell F, Pardons A, Pepitone K, Poimenidou E, Pukhov A, Rey S, Rossel R, Saberi H, Schmitz O, Senes E, Silva F, Silva L, Spear B, Stollberg C, Sublet A, Swain C, Topaloudis A, Torrado N, Turner M, Velotti F, Verzilov V, Vieira J, Welsch C, Wendt M, Wing M, Wolfenden J, Woolley B, Xia G, Yarygova V, Zepp M. Hosing of a Long Relativistic Particle Bunch in Plasma. Phys Rev Lett 2024; 132:075001. [PMID: 38427892 DOI: 10.1103/physrevlett.132.075001] [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: 09/08/2023] [Accepted: 01/16/2024] [Indexed: 03/03/2024]
Abstract
Experimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment, self-modulation in the perpendicular plane, at frequencies close to the plasma electron frequency, and are reproducible. Development of hosing depends on misalignment direction, its growth on misalignment extent and on proton bunch charge. Results have the main characteristics of a theoretical model, are relevant to other plasma-based accelerators and represent the first characterization of hosing.
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Affiliation(s)
- T Nechaeva
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - L Verra
- CERN, 1211 Geneva 23, Switzerland
| | - J Pucek
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - L Ranc
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - M Bergamaschi
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - G Zevi Della Porta
- Max Planck Institute for Physics, 80805 Munich, Germany
- CERN, 1211 Geneva 23, Switzerland
| | - P Muggli
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - R Agnello
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | | | - C Amoedo
- CERN, 1211 Geneva 23, Switzerland
| | - Y Andrebe
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - O Apsimon
- University of Manchester M13 9PL, Manchester M13 9PL, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - R Apsimon
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- Lancaster University, Lancaster LA1 4YB, United Kingdom
| | | | - V Bencini
- CERN, 1211 Geneva 23, Switzerland
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | - P Blanchard
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - P N Burrows
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | - B Buttenschön
- Max Planck Institute for Plasma Physics, 17491 Greifswald, Germany
| | - A Caldwell
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - M Chung
- UNIST, Ulsan 44919, Republic of Korea
| | | | - C Davut
- University of Manchester M13 9PL, Manchester M13 9PL, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - G Demeter
- Wigner Research Centre for Physics, 1121 Budapest, Hungary
| | - A C Dexter
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- Lancaster University, Lancaster LA1 4YB, United Kingdom
| | | | - J Farmer
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - A Fasoli
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - R Fonseca
- ISCTE - Instituto Universitéario de Lisboa, 1049-001 Lisbon, Portugal
- GoLP/Instituto de Plasmas e Fusáo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - I Furno
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | | | - M Granetzny
- University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Graubner
- Philipps-Universität Marburg, 35032 Marburg, Germany
| | - O Grulke
- Max Planck Institute for Plasma Physics, 17491 Greifswald, Germany
- Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | | | - E Guran
- CERN, 1211 Geneva 23, Switzerland
| | - J Henderson
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- STFC/ASTeC, Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
| | - M Á Kedves
- Wigner Research Centre for Physics, 1121 Budapest, Hungary
| | - S-Y Kim
- CERN, 1211 Geneva 23, Switzerland
- UNIST, Ulsan 44919, Republic of Korea
| | - F Kraus
- Philipps-Universität Marburg, 35032 Marburg, Germany
| | - M Krupa
- CERN, 1211 Geneva 23, Switzerland
| | | | - L Liang
- University of Manchester M13 9PL, Manchester M13 9PL, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - S Liu
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - N Lopes
- GoLP/Instituto de Plasmas e Fusáo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - K Lotov
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | | | | | - K Moon
- UNIST, Ulsan 44919, Republic of Korea
| | | | - M Moreira
- GoLP/Instituto de Plasmas e Fusáo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - N Okhotnikov
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - C Pakuza
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | | | | | - K Pepitone
- Angstrom Laboratory, Department of Physics and Astronomy, 752 37 Uppsala, Sweden
| | | | - A Pukhov
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
- Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - S Rey
- CERN, 1211 Geneva 23, Switzerland
| | - R Rossel
- CERN, 1211 Geneva 23, Switzerland
| | - H Saberi
- University of Manchester M13 9PL, Manchester M13 9PL, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - O Schmitz
- University of Wisconsin, Madison, Wisconsin 53706, USA
| | - E Senes
- CERN, 1211 Geneva 23, Switzerland
| | - F Silva
- INESC-ID, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - L Silva
- GoLP/Instituto de Plasmas e Fusáo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - B Spear
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | - C Stollberg
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - A Sublet
- CERN, 1211 Geneva 23, Switzerland
| | - C Swain
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | | | - N Torrado
- CERN, 1211 Geneva 23, Switzerland
- GoLP/Instituto de Plasmas e Fusáo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - M Turner
- CERN, 1211 Geneva 23, Switzerland
| | | | - V Verzilov
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - J Vieira
- GoLP/Instituto de Plasmas e Fusáo Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - C Welsch
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - M Wendt
- CERN, 1211 Geneva 23, Switzerland
| | - M Wing
- UCL, London WC1 6BT, United Kingdom
| | - J Wolfenden
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | | | - G Xia
- University of Manchester M13 9PL, Manchester M13 9PL, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - V Yarygova
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - M Zepp
- University of Wisconsin, Madison, Wisconsin 53706, USA
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Leiz M, Knorr M, Moon K, Tischler L, Sohrabi K, Cantez S, Däbritz J, de Laffolie J, van den Berg N. How can patient registries facilitate guideline-based healthcare? A retrospective analysis of the CEDATA-GPGE registry for pediatric inflammatory bowel disease. BMC Health Serv Res 2023; 23:648. [PMID: 37330476 DOI: 10.1186/s12913-023-09639-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 06/03/2023] [Indexed: 06/19/2023] Open
Abstract
BACKGROUND Early diagnosis is mandatory for the medical care of children and adolescents with pediatric-onset inflammatory bowel disease (PIBD). International guidelines ('Porto criteria') of the European Society for Pediatric Gastroenterology, Hepatology and Nutrition recommend medical diagnostic procedures in PIBD. Since 2004, German and Austrian pediatric gastroenterologists document diagnostic and treatment data in the patient registry CEDATA-GPGE on a voluntary basis. The aim of this retrospective study was to analyze whether the registry CEDATA-GPGE reflects the Porto criteria and to what extent diagnostic measures of PIBD according to the Porto criteria are documented. METHODS Data of CEDATA-GPGE were analyzed for the period January 2014 to December 2018. Variables representing the Porto criteria for initial diagnostic were identified and categorized. The average of the number of measures documented in each category was calculated for the diagnoses CD, UC, and IBD-U. Differences between the diagnoses were tested by Chi-square test. Data on possible differences between data documented in the registry and diagnostic procedures that were actually performed were obtained via a sample survey. RESULTS There were 547 patients included in the analysis. The median age of patients with incident CD (n = 289) was 13.6 years (IQR: 11.2-15.2), of patients with UC (n = 212) 13.1 years (IQR: 10.4-14.8) and of patients with IBD-U (n = 46) 12.2 years (IQR: 8.6-14.7). The variables identified in the registry fully reflect the recommendations by the Porto criteria. Only the disease activity indices PUCAI and PCDAI were not directly provided by participants but calculated from obtained data. The category 'Case history' were documented for the largest part (78.0%), the category 'Imaging of the small bowel' were documented least frequently (39.1%). In patients with CD, the categories 'Imaging of the small bowel' (χ2 = 20.7, Cramer-V = 0.2, p < 0.001) and 'Puberty stage' (χ2 = 9.8, Cramer-V = 0.1, p < 0.05) were documented more often than in patients with UC and IBD-U. CONCLUSION The registry fully reproduces the guideline's recommendations for the initial diagnosis of PIBD. The proportion of documented diagnostic examinations varied within the diagnostic categories and between the diagnoses. Despite technological innovations, time and personnel capacities at participating centers and study center are necessary to ensure reliable data entry and to enable researchers to derive important insights into guideline-based care.
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Affiliation(s)
- M Leiz
- Institute for Community Medicine, University Medicine, Greifswald, Germany.
| | - M Knorr
- Institute for Community Medicine, University Medicine, Greifswald, Germany
| | - K Moon
- Institute for Community Medicine, University Medicine, Greifswald, Germany
| | - L Tischler
- Institute for Community Medicine, University Medicine, Greifswald, Germany
| | - K Sohrabi
- Technical University of Applied Sciences, Giessen, Germany
| | - S Cantez
- General Pediatrics & Neonatology, Justus-Liebig-University, Giessen, Germany
| | - J Däbritz
- Department of Pediatrics, Greifswald University Medical Center, Greifswald, Germany
| | - J de Laffolie
- General Pediatrics & Neonatology, Justus-Liebig-University, Giessen, Germany
| | - N van den Berg
- Institute for Community Medicine, University Medicine, Greifswald, Germany
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3
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Lodhia P, Nazari G, Bryant D, Getgood A, McCormack R, Getgood AM, Bryant DM, Litchfield R, Willits K, Birmingham T, Hewison C, Firth AD, Wanlin S, Pinto R, Martindale A, O’Neill L, Jennings M, Daniluk M, McCormack RG, Boyer D, Zomar M, Moon K, Moon R, Fan B, Mohan B, Payne K, Heard M, Buchko GM, Hiemstra LA, Kerslake S, Tynedal J, MacDonald PB, Stranges G, Mcrae S, Gullett L, Brown H, Legary A, Longo A, Christian M, Ferguson C, Rezansoff A, Mohtadi N, Barber R, Chan D, Campbell C, Garven A, Pulsifer K, Mayer M, Peterson D, Simunovic N, Duong A, Robinson D, Levy D, Skelly M, Shanmugaraj A, Bardana D, Howells F, Tough M, Spalding T, Thompson P, Metcalfe A, Asplin L, Dube A, Clarkson L, Brown J, Bolsover A, Bradshaw C, Belgrove L, Milan F, Turner S, Verdugo S, Lowe J, Dunne D, McGowan K, Suddens CM, Verdonk PC, Declerq G, Vuylsteke K, Van Haver M. Performance of 5-Strand Hamstring Autograft Anterior Cruciate Ligament Reconstruction in the STABILITY Study: A Subgroup Analysis. Am J Sports Med 2022; 50:3502-3509. [PMID: 36260487 PMCID: PMC9630854 DOI: 10.1177/03635465221128581] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Anterior cruciate ligament (ACL) reconstructions (ACLRs) with graft diameters <8mm have been shown to have higher revision rates. The 5-strand (5S) hamstring autograft configuration is a proposed option to increase graft diameter. PURPOSE To investigate the differences in clinical outcomes between 4-strand (4S) and 5S hamstring autografts for ACLR in patients who underwent ACLR alone or concomitantly with a lateral extra-articular tenodesis (LET) procedure. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS Data from the STABILITY study were analyzed to compare a subgroup of patients undergoing ACLR alone or with a concomitant LET procedure (ACLR + LET) with a minimum graft diameter of 8mm that had either a 4S or 5S hamstring autograft configuration. The primary outcome was clinical failure, a composite of rotatory laxity and/or graft failure. The secondary outcome measures consisted of 2 patient-reported outcome scores (PROs)-namely, the ACL Quality of Life Questionnaire (ACL-QoL) and the International Knee Documentation Committee (IKDC) score at 24 months postoperatively. RESULTS Of the 618 patients randomized in the STABILITY study, 399 (228 male; 57%) fit the inclusion criteria for this study. Of these, 191 and 208 patients underwent 4S and 5S configurations of hamstring ACLR, respectively, with a minimum graft diameter of 8mm. Both groups had similar characteristics other than differences in anthropometric factors-namely, sex, height, and weight, and Beighton scores. The primary outcomes revealed no difference between the 2 groups in rotatory stability (odds ratio [OR], 1.19; 95% CI, 0.77-1.84; P = .42) or graft failure (OR, 1.13; 95% CI, 0.51-2.50; P = .76). There was no significant difference between the groups in Lachman (P = .46) and pivot-shift (P = .53) test results at 24 months postoperatively. The secondary outcomes revealed no differences in the ACL-QoL (P = .67) and IKDC (P = .83) scores between the 2 subgroups. CONCLUSION At the 24-month follow-up, there were no significant differences in clinical failure rates and PROs in an analysis of patients with 4S and 5S hamstring autografts of ≥8mm diameter for ACLR or ACLR + LET. The 5S hamstring graft configuration is a viable option to produce larger-diameter ACL grafts.
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Affiliation(s)
- Parth Lodhia
- Parth Lodhia, MD, University of British Columbia, 403-233
Nelson’s Crescent, New Westminster, V3L 0E4, Canada (
)
| | - Goris Nazari
- Canadian Institutes of Health Research, Ottawa,
Ontario, Canada
| | - Dianne Bryant
- The University of Western Ontario, London,
Ontario, Canada
| | - Alan Getgood
- Western Ontario University, London, Ontario,
Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Michal Daniluk
- London Health Sciences Centre, Western
University, Fowler Kennedy Sport Medicine Clinic, London, Canada
| | | | | | | | | | | | | | | | - Kyrsten Payne
- Fraser Orthopaedic Institute, New Westminster,
Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Michelle Mayer
- Sport Medicine Centre, University of Calgary,
Calgary, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mieke Van Haver
- Antwerp Orthopaedic Center, Ghent,
Belgium,Investigation performed at University of
British Columbia, Vancouver, BC, Canada
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4
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Marmura H, Firth A, Batty L, Bryant DM, Getgood AMJ, Bryant D, Litchfield R, Willits K, Birmingham T, Hewison C, Wanlin S, Firth A, Pinto R, Martindale A, O’Neill L, Jennings M, Daniluk M, Boyer D, McCormack B, Zomar M, Moon K, Moon R, Fan B, Mohan B, Heard M, Buchko GM, Hiemstra LA, Kerslake S, Tynedal J, MacDonald P, Stranges G, Mcrae S, Gullett L, Brown H, Legary A, Longo A, Christian M, Ferguson C, Rezansoff A, Mohtadi N, Barber R, Chan D, Campbell C, Garven A, Pulsifer K, Mayer M, Peterson D, Simunovic N, Duong A, Robinson D, Levy D, Skelly M, Shanmugaraj A, Bardana D, Howells F, Tough M, Spalding T, Thompson P, Metcalfe A, Asplin L, Dube A, Clarkson L, Brown J, Bolsover A, Bradshaw C, Belgrove L, Millan F, Turner S, Verdugo S, Lowe J, Dunne D, McGowan K, Suddens CM, Verdonk P, Declerq G, Vuylsteke K, Van Haver M. Meniscal repair at the time of primary ACLR does not negatively influence short term knee stability, graft rupture rates, or patient-reported outcome measures: the STABILITY experience. Knee Surg Sports Traumatol Arthrosc 2022; 30:3689-3699. [PMID: 35451638 DOI: 10.1007/s00167-022-06962-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 03/24/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE To assess how meniscal repair and excision impact short term patient-reported outcome measures (PROMs), knee stability, and early graft rupture rates following primary hamstring anterior cruciate ligament reconstruction (ACLR) with or without lateral extra-articular tenodesis (LET) in a group of young active patients where meniscal repair is commonly advocated. METHODS Six hundred and eighteen patients under 25 years of age at high-risk of graft failure following ACLR were recruited to the Stability 1 study. Multivariable regression models were developed to identify statistically and clinically significant surgical and demographic predictors of Knee Injury and Osteoarthritis Outcome Score (KOOS), International Knee Documentation Committee Subjective Knee Form (IKDC), ACL Quality of Life Questionnaire (ACL-QOL) and Marx Activity Rating Scale (MARS) scores. Chi-Square tests of independence were used to explore the association between meniscal status (torn, not torn), meniscal treatment (excision or repair), graft rupture, and rotatory knee laxity. RESULTS Medial meniscus repair was associated with worse outcomes on the KOOS (β = -1.32, 95% CI: -1.57 to -1.10, p = 0.003), IKDC (β = -1.66, 95% CI: -1.53 to -1.02, p = 0.031) and ACL-QOL (β = -1.25, 95% CI: -1.61 to 1.02, p = n.s.). However, these associations indicated small, clinically insignificant changes based on reported measures of clinical relevance. Other important predictors of post-operative PROMs included age, sex, and baseline scores. Medial meniscus excision and lateral meniscus treatment (repair or excision) did not have an important influence on PROMs. There was no significant association between meniscal treatment and graft rupture or rotatory knee laxity. CONCLUSION While repairing the medial meniscus may result in a small reduction in PROM scores at two-year follow-up, these differences are not likely to be important to patients or clinicians. Any surgical morbidity associated with meniscal repair appears negligible in terms of PROMs. Meniscal repair does not affect rotatory laxity or graft failure rates in the short term. Therefore, meniscal repair should likely be maintained as the standard of care for concomitant meniscal tears with ACLR. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Hana Marmura
- Faculty of Health Sciences, Western University, London, Canada.,Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, London, ON, N6K 4P3, Canada.,Bone and Joint Institute, Western University, London, Canada.,Lawson Research, London Health Sciences Centre, London, Canada
| | - Andrew Firth
- Faculty of Health Sciences, Western University, London, Canada.,Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, London, ON, N6K 4P3, Canada.,Bone and Joint Institute, Western University, London, Canada.,Lawson Research, London Health Sciences Centre, London, Canada
| | - Lachlan Batty
- Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, London, ON, N6K 4P3, Canada.,OrthoSport Victoria Research Unit, Richmond, Australia.,St. Vincent's Hospital, Melbourne, Australia
| | - Dianne M Bryant
- Faculty of Health Sciences, Western University, London, Canada.,Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, London, ON, N6K 4P3, Canada.,Bone and Joint Institute, Western University, London, Canada.,Lawson Research, London Health Sciences Centre, London, Canada.,Schulich School of Medicine and Dentistry, Western University, London, Canada.,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
| | - Alan M J Getgood
- Faculty of Health Sciences, Western University, London, Canada. .,Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, London, ON, N6K 4P3, Canada. .,Bone and Joint Institute, Western University, London, Canada. .,Lawson Research, London Health Sciences Centre, London, Canada. .,Schulich School of Medicine and Dentistry, Western University, London, Canada.
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5
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Verra L, Zevi Della Porta G, Pucek J, Nechaeva T, Wyler S, Bergamaschi M, Senes E, Guran E, Moody JT, Kedves MÁ, Gschwendtner E, Muggli P, Agnello R, Ahdida CC, Goncalves MCA, Andrebe Y, Apsimon O, Apsimon R, Arnesano JM, Bachmann AM, Barrientos D, Batsch F, Bencini V, Blanchard P, Burrows PN, Buttenschön B, Caldwell A, Chappell J, Chevallay E, Chung M, Cooke DA, Davut C, Demeter G, Dexter AC, Doebert S, Elverson FA, Farmer J, Fasoli A, Fedosseev V, Fonseca R, Furno I, Gorn A, Granados E, Granetzny M, Graubner T, Grulke O, Hafych V, Henderson J, Hüther M, Khudiakov V, Kim SY, Kraus F, Krupa M, Lefevre T, Liang L, Liu S, Lopes N, Lotov K, Martinez Calderon M, Mazzoni S, Medina Godoy D, Moon K, Morales Guzmán PI, Moreira M, Nowak E, Pakuza C, Panuganti H, Pardons A, Pepitone K, Perera A, Pukhov A, Ramjiawan RL, Rey S, Schmitz O, Silva F, Silva L, Stollberg C, Sublet A, Swain C, Topaloudis A, Torrado N, Tuev P, Velotti F, Verzilov V, Vieira J, Weidl M, Welsch C, Wendt M, Wing M, Wolfenden J, Woolley B, Xia G, Yarygova V, Zepp M. Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma. Phys Rev Lett 2022; 129:024802. [PMID: 35867433 DOI: 10.1103/physrevlett.129.024802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
A long, narrow, relativistic charged particle bunch propagating in plasma is subject to the self-modulation (SM) instability. We show that SM of a proton bunch can be seeded by the wakefields driven by a preceding electron bunch. SM timing reproducibility and control are at the level of a small fraction of the modulation period. With this seeding method, we independently control the amplitude of the seed wakefields with the charge of the electron bunch and the growth rate of SM with the charge of the proton bunch. Seeding leads to larger growth of the wakefields than in the instability case.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - R Agnello
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | | | | | - Y Andrebe
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - O Apsimon
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - R Apsimon
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- Lancaster University, Lancaster LA1 4YB, United Kingdom
| | | | - A-M Bachmann
- Max Planck Institute for Physics, 80805 Munich, Germany
| | | | - F Batsch
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - V Bencini
- CERN, 1211 Geneva 23, Switzerland
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | - P Blanchard
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - P N Burrows
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | - B Buttenschön
- Max Planck Institute for Plasma Physics, 17491 Greifswald, Germany
| | - A Caldwell
- Max Planck Institute for Physics, 80805 Munich, Germany
| | | | | | - M Chung
- UNIST, Ulsan 44919, Republic of Korea
| | | | - C Davut
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- University of Manchester, Manchester M13 9PL, United Kingdom
| | - G Demeter
- Wigner Research Centre for Physics, 1121 Budapest, Hungary
| | - A C Dexter
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- Lancaster University, Lancaster LA1 4YB, United Kingdom
| | | | | | - J Farmer
- CERN, 1211 Geneva 23, Switzerland
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - A Fasoli
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | | | - R Fonseca
- ISCTE-Instituto Universitéario de Lisboa, 1049-001 Lisbon, Portugal
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - I Furno
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - A Gorn
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk , Russia
| | | | - M Granetzny
- University of Wisconsin, Madison, Wisconsin 53706, USA
| | - T Graubner
- Philipps-Universität Marburg, 35032 Marburg, Germany
| | - O Grulke
- Max Planck Institute for Plasma Physics, 17491 Greifswald, Germany
- Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - V Hafych
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - J Henderson
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- Accelerator Science and Technology Centre, ASTeC, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
| | - M Hüther
- Max Planck Institute for Physics, 80805 Munich, Germany
| | - V Khudiakov
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - S-Y Kim
- CERN, 1211 Geneva 23, Switzerland
- UNIST, Ulsan 44919, Republic of Korea
| | - F Kraus
- Philipps-Universität Marburg, 35032 Marburg, Germany
| | - M Krupa
- CERN, 1211 Geneva 23, Switzerland
| | | | - L Liang
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- University of Manchester, Manchester M13 9PL, United Kingdom
| | - S Liu
- TRIUMF, Vancouver, Canada
| | - N Lopes
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - K Lotov
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk , Russia
| | | | | | | | - K Moon
- UNIST, Ulsan 44919, Republic of Korea
| | | | - M Moreira
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - E Nowak
- CERN, 1211 Geneva 23, Switzerland
| | - C Pakuza
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | | | | | - K Pepitone
- Angstrom Laboratory, Department of Physics and Astronomy, 752 37 Uppsala, Sweden
| | - A Perera
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - A Pukhov
- Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - R L Ramjiawan
- CERN, 1211 Geneva 23, Switzerland
- John Adams Institute, Oxford University, Oxford OX1 3RH, United Kingdom
| | - S Rey
- CERN, 1211 Geneva 23, Switzerland
| | - O Schmitz
- University of Wisconsin, Madison, Wisconsin 53706, USA
| | - F Silva
- INESC-ID, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - L Silva
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - C Stollberg
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), 1015 Lausanne, Switzerland
| | - A Sublet
- CERN, 1211 Geneva 23, Switzerland
| | - C Swain
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | | | - N Torrado
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - P Tuev
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk , Russia
| | | | | | - J Vieira
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - M Weidl
- Max Planck Institute for Plasma Physics, 80805 Munich, Germany
| | - C Welsch
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | - M Wendt
- CERN, 1211 Geneva 23, Switzerland
| | - M Wing
- UCL, London WC1 6BT, United Kingdom
| | - J Wolfenden
- University of Liverpool, Liverpool L69 7ZE, United Kingdom
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
| | | | - G Xia
- Cockcroft Institute, Warrington WA4 4AD, United Kingdom
- University of Manchester, Manchester M13 9PL, United Kingdom
| | - V Yarygova
- Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk , Russia
| | - M Zepp
- University of Wisconsin, Madison, Wisconsin 53706, USA
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6
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Firth AD, Bryant DM, Litchfield R, McCormack RG, Heard M, MacDonald PB, Spalding T, Verdonk PC, Peterson D, Bardana D, Rezansoff A, Getgood AM, Willits K, Birmingham T, Hewison C, Wanlin S, Pinto R, Martindale A, O’Neill L, Jennings M, Daniluk M, Boyer D, Zomar M, Moon K, Moon R, Fan B, Mohan B, Buchko GM, Hiemstra LA, Kerslake S, Tynedal J, Stranges G, Mcrae S, Gullett L, Brown H, Legary A, Longo A, Christian M, Ferguson C, Mohtadi N, Barber R, Chan D, Campbell C, Garven A, Pulsifer K, Mayer M, Simunovic N, Duong A, Robinson D, Levy D, Skelly M, Shanmugaraj A, Howells F, Tough M, Thompson P, Metcalfe A, Asplin L, Dube A, Clarkson L, Brown J, Bolsover A, Bradshaw C, Belgrove L, Milan F, Turner S, Verdugo S, Lowe J, Dunne D, McGowan K, Suddens CM, Declerq G, Vuylsteke K, Van Haver M. Predictors of Graft Failure in Young Active Patients Undergoing Hamstring Autograft Anterior Cruciate Ligament Reconstruction With or Without a Lateral Extra-articular Tenodesis: The Stability Experience. Am J Sports Med 2022; 50:384-395. [PMID: 35050817 PMCID: PMC8829733 DOI: 10.1177/03635465211061150] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Anterior cruciate ligament (ACL) reconstruction (ACLR) has higher failure rates in young active patients returning to sports as compared with older, less active individuals. Augmentation of ACLR with an anterolateral procedure has been shown to reduce failure rates; however, indications for this procedure have yet to be clearly defined. PURPOSE/HYPOTHESIS The purpose of this study was to identify predictors of ACL graft failure in high-risk patients and determine key indications for when hamstring ACLR should be augmented by a lateral extra-articular tenodesis (LET). We hypothesized that different preoperative characteristics and surgical variables may be associated with graft failure characterized by asymmetric pivot shift and graft rupture. STUDY DESIGN Case-control study; Level of evidence, 3. METHODS Data were obtained from the Stability 1 Study, a multicenter randomized controlled trial of young active patients undergoing autologous hamstring ACLR with or without a LET. We performed 2 multivariable logistic regression analyses, with asymmetric pivot shift and graft rupture as the dependent variables. The following were included as predictors: LET, age, sex, graft diameter, tear chronicity, preoperative high-grade knee laxity, preoperative hyperextension on the contralateral side, medial meniscal repair/excision, lateral meniscal repair/excision, posterior tibial slope angle, and return-to-sports exposure time and level. RESULTS Of the 618 patients in the Stability 1 Study, 568 with a mean age of 18.8 years (292 female; 51.4%) were included in this analysis. Asymmetric pivot shift occurred in 152 (26.8%) and graft rupture in 43 (7.6%). The addition of a LET (odds ratio [OR], 0.56; 95% CI, 0.37-0.83) and increased graft diameter (OR, 0.62; 95% CI, 0.44-0.87) were significantly associated with lower odds of asymmetric pivot shift. The addition of a LET (OR, 0.40; 95% CI, 0.18-0.91) and older age (OR, 0.83; 95% CI, 0.72-0.96) significantly reduced the odds of graft rupture, while greater tibial slope (OR, 1.15; 95% CI, 1.01-1.32), preoperative high-grade knee laxity (OR, 3.27; 95% CI, 1.45-7.41), and greater exposure time to sport (ie, earlier return to sport) (OR, 1.18; 95% CI, 1.08-1.29) were significantly associated with greater odds of rupture. CONCLUSION The addition of a LET and larger graft diameter were significantly associated with reduced odds of asymmetric pivot shift. Adding a LET was protective of graft rupture, while younger age, greater posterior tibial slope, high-grade knee laxity, and earlier return to sport were associated with increased odds of graft rupture. Orthopaedic surgeons should consider supplementing hamstring autograft ACLR with a LET in young active patients with morphological characteristics that make them at high risk of reinjury.
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Affiliation(s)
| | | | - Robert Litchfield
- London Health Sciences Centre, Western University, Fowler Kennedy Sport Medicine Clinic, London, Canada
| | | | | | | | - Tim Spalding
- University Hospitals Coventry Warwickshire NHS Trust, Coventry, UK
| | | | | | | | - Alex Rezansoff
- Sport Medicine Centre, University of Calgary, Calgary, Canada
| | | | - Alan M.J. Getgood
- Alan M.J. Getgood, MD, Fowler Kennedy Sport Medicine Clinic, Western University, 3M Centre, London, ON N6A 3K7, Canada () (Twitter: FKSMC_Getgood)
| | | | | | | | | | | | | | | | | | - Michal Daniluk
- London Health Sciences Centre, Western University, Fowler Kennedy Sport Medicine Clinic, London, Canada
| | | | | | | | | | | | - Bindu Mohan
- Fraser Orthopaedic Institute, New Westminster, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Michelle Mayer
- Sport Medicine Centre, University of Calgary, Calgary, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mieke Van Haver
- Antwerp Orthopaedic Center, Ghent, Belgium,Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
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7
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Batsch F, Muggli P, Agnello R, Ahdida CC, Amoedo Goncalves MC, Andrebe Y, Apsimon O, Apsimon R, Bachmann AM, Baistrukov MA, Blanchard P, Braunmüller F, Burrows PN, Buttenschön B, Caldwell A, Chappell J, Chevallay E, Chung M, Cooke DA, Damerau H, Davut C, Demeter G, Deubner HL, Doebert S, Farmer J, Fasoli A, Fedosseev VN, Fiorito R, Fonseca RA, Friebel F, Furno I, Garolfi L, Gessner S, Gorgisyan I, Gorn AA, Granados E, Granetzny M, Graubner T, Grulke O, Gschwendtner E, Hafych V, Helm A, Henderson JR, Hüther M, Kargapolov IY, Kim SY, Kraus F, Krupa M, Lefevre T, Liang L, Liu S, Lopes N, Lotov KV, Martyanov M, Mazzoni S, Medina Godoy D, Minakov VA, Moody JT, Moon K, Morales Guzmán PI, Moreira M, Nechaeva T, Nowak E, Pakuza C, Panuganti H, Pardons A, Perera A, Pucek J, Pukhov A, Ramjiawan RL, Rey S, Rieger K, Schmitz O, Senes E, Silva LO, Speroni R, Spitsyn RI, Stollberg C, Sublet A, Topaloudis A, Torrado N, Tuev PV, Turner M, Velotti F, Verra L, Verzilov VA, Vieira J, Vincke H, Welsch CP, Wendt M, Wing M, Wiwattananon P, Wolfenden J, Woolley B, Xia G, Zepp M, Zevi Della Porta G. Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma. Phys Rev Lett 2021; 126:164802. [PMID: 33961468 DOI: 10.1103/physrevlett.126.164802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/18/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally that, with sufficient initial amplitude [≥(4.1±0.4) MV/m], the phase of the modulation along the bunch is reproducible from event to event, with 3%-7% (of 2π) rms variations all along the bunch. The phase is not reproducible for lower initial amplitudes. We observe the transition between these two regimes. Phase reproducibility is essential for deterministic external injection of particles to be accelerated.
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Affiliation(s)
- F Batsch
- Max Planck Institute for Physics, Munich, Germany
| | - P Muggli
- Max Planck Institute for Physics, Munich, Germany
| | - R Agnello
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland
| | | | | | - Y Andrebe
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland
| | - O Apsimon
- Cockcroft Institute, Daresbury, United Kingdom
- University of Liverpool, Liverpool, United Kingdom
| | - R Apsimon
- Cockcroft Institute, Daresbury, United Kingdom
- Lancaster University, Lancaster, United Kingdom
| | - A-M Bachmann
- Max Planck Institute for Physics, Munich, Germany
| | - M A Baistrukov
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | - P Blanchard
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland
| | | | - P N Burrows
- John Adams Institute, Oxford University, Oxford, United Kingdom
| | - B Buttenschön
- Max Planck Institute for Plasma Physics, Greifswald, Germany
| | - A Caldwell
- Max Planck Institute for Physics, Munich, Germany
| | - J Chappell
- University College London, London, United Kingdom
| | | | - M Chung
- Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - D A Cooke
- University College London, London, United Kingdom
| | | | - C Davut
- Cockcroft Institute, Daresbury, United Kingdom
- University of Manchester, Manchester, United Kingdom
| | - G Demeter
- Wigner Research Center for Physics, Budapest, Hungary
| | - H L Deubner
- Philipps-Universität Marburg, Marburg, Germany
| | | | - J Farmer
- Max Planck Institute for Physics, Munich, Germany
- CERN, Geneva, Switzerland
| | - A Fasoli
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland
| | | | - R Fiorito
- Cockcroft Institute, Daresbury, United Kingdom
- University of Liverpool, Liverpool, United Kingdom
| | - R A Fonseca
- ISCTE-Instituto Universitéario de Lisboa, Portugal
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | | | - I Furno
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland
| | | | - S Gessner
- CERN, Geneva, Switzerland
- SLAC National Accelerator Laboratory, Menlo Park, California, USA
| | | | - A A Gorn
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | | | - M Granetzny
- University of Wisconsin, Madison, Wisconsin, USA
| | - T Graubner
- Philipps-Universität Marburg, Marburg, Germany
| | - O Grulke
- Max Planck Institute for Plasma Physics, Greifswald, Germany
- Technical University of Denmark, Lyngby, Denmark
| | | | - V Hafych
- Max Planck Institute for Physics, Munich, Germany
| | - A Helm
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - J R Henderson
- Cockcroft Institute, Daresbury, United Kingdom
- Accelerator Science and Technology Centre, ASTeC, STFC Daresbury Laboratory, Warrington, United Kingdom
| | - M Hüther
- Max Planck Institute for Physics, Munich, Germany
| | - I Yu Kargapolov
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | - S-Y Kim
- Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - F Kraus
- Philipps-Universität Marburg, Marburg, Germany
| | | | | | - L Liang
- Cockcroft Institute, Daresbury, United Kingdom
- University of Manchester, Manchester, United Kingdom
| | - S Liu
- TRIUMF, Vancouver, Canada
| | - N Lopes
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - K V Lotov
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | - M Martyanov
- Max Planck Institute for Physics, Munich, Germany
| | | | | | - V A Minakov
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | - J T Moody
- Max Planck Institute for Physics, Munich, Germany
| | - K Moon
- Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | | | - M Moreira
- CERN, Geneva, Switzerland
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - T Nechaeva
- Max Planck Institute for Physics, Munich, Germany
| | | | - C Pakuza
- John Adams Institute, Oxford University, Oxford, United Kingdom
| | | | | | - A Perera
- Cockcroft Institute, Daresbury, United Kingdom
- University of Liverpool, Liverpool, United Kingdom
| | - J Pucek
- Max Planck Institute for Physics, Munich, Germany
| | - A Pukhov
- Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - R L Ramjiawan
- CERN, Geneva, Switzerland
- John Adams Institute, Oxford University, Oxford, United Kingdom
| | - S Rey
- CERN, Geneva, Switzerland
| | - K Rieger
- Max Planck Institute for Physics, Munich, Germany
| | - O Schmitz
- University of Wisconsin, Madison, Wisconsin, USA
| | - E Senes
- CERN, Geneva, Switzerland
- John Adams Institute, Oxford University, Oxford, United Kingdom
| | - L O Silva
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | | | - R I Spitsyn
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | - C Stollberg
- Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland
| | | | | | - N Torrado
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - P V Tuev
- Novosibirsk State University, Novosibirsk, Russia
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia
| | - M Turner
- CERN, Geneva, Switzerland
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | | | - L Verra
- Max Planck Institute for Physics, Munich, Germany
- CERN, Geneva, Switzerland
- Technical University Munich, Munich, Germany
| | | | - J Vieira
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | | | - C P Welsch
- Cockcroft Institute, Daresbury, United Kingdom
- University of Liverpool, Liverpool, United Kingdom
| | | | - M Wing
- University College London, London, United Kingdom
| | | | - J Wolfenden
- Cockcroft Institute, Daresbury, United Kingdom
- University of Liverpool, Liverpool, United Kingdom
| | | | - G Xia
- Cockcroft Institute, Daresbury, United Kingdom
- University of Manchester, Manchester, United Kingdom
| | - M Zepp
- University of Wisconsin, Madison, Wisconsin, USA
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8
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Batty LM, Firth A, Moatshe G, Bryant DM, Heard M, McCormack RG, Rezansoff A, Peterson DC, Bardana D, MacDonald PB, Verdonk PCM, Spalding T, Getgood AMJ, Willits K, Birmingham T, Hewison C, Wanlin S, Firth A, Pinto R, Martindale A, O'Neill L, Jennings M, Daniluk M, Boyer D, Zomar M, Moon K, Pritchett R, Payne K, Fan B, Mohan B, Buchko GM, Hiemstra LA, Kerslake S, Tynedal J, Stranges G, Mcrae S, Gullett L, Brown H, Legary A, Longo A, Christian M, Ferguson C, Mohtadi N, Barber R, Chan D, Campbell C, Garven A, Pulsifer K, Mayer M, Simunovic N, Duong A, Robinson D, Levy D, Skelly M, Shanmugaraj A, Howells F, Tough M, Thompson P, Metcalfe A, Asplin L, Dube A, Clarkson L, Brown J, Bolsover A, Bradshaw C, Belgrove L, Millan F, Turner S, Verdugo S, Lowe J, Dunne D, McGowan K, Suddens CM, Declercq G, Vuylsteke K, Van Haver M. Association of Ligamentous Laxity, Male Sex, Chronicity, Meniscal Injury, and Posterior Tibial Slope With a High-Grade Preoperative Pivot Shift: A Post Hoc Analysis of the STABILITY Study. Orthop J Sports Med 2021; 9:23259671211000038. [PMID: 33889648 PMCID: PMC8033400 DOI: 10.1177/23259671211000038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background: A spectrum of anterolateral rotatory laxity exists in anterior cruciate
ligament (ACL)–injured knees. Understanding of the factors contributing to a
high-grade pivot shift continues to be refined. Purpose: To investigate factors associated with a high-grade preoperative pivot shift
and to evaluate the relationship between this condition and baseline
patient-reported outcome measures (PROMs). Study Design: Cross-sectional study; Level of evidence, 3. Methods: A post hoc analysis was performed of 618 patients with ACL deficiency deemed
high risk for reinjury. A binary logistic regression model was developed,
with high-grade pivot shift as the dependent variable. Age, sex, Beighton
score, chronicity of the ACL injury, posterior third medial or lateral
meniscal injury, and tibial slope were selected as independent variables.
The importance of knee hyperextension as a component of the Beighton score
was assessed using receiver operator characteristic curves. Baseline PROMs
were compared between patients with and without a high-grade pivot. Results: Six factors were associated with a high-grade pivot shift: Beighton score
(each additional point; odds ratio [OR], 1.17; 95% CI, 1.06-1.30;
P = .002), male sex (OR, 2.30; 95% CI, 1.28-4.13;
P = .005), presence of a posterior third medial (OR,
2.55; 95% CI, 1.11-5.84; P = .03) or lateral (OR, 1.76; 95%
CI, 1.01-3.08; P = .048) meniscal injury, tibial slope
>9° (OR, 2.35; 95% CI, 1.09-5.07; P = .03), and
chronicity >6 months (OR, 1.70; 95% CI, 1.00-2.88; P =
.049). The presence of knee hyperextension improved the diagnostic utility
of the Beighton score as a predictor of a high-grade pivot shift. Tibial
slope <9° was associated with only a high-grade pivot in the presence of
a posterior third medial meniscal injury. Patients with a high-grade pivot
shift had higher baseline 4-Item Pain Intensity Measure scores than did
those without a high-grade pivot shift (mean ± SD, 11 ± 13 vs 8 ± 14;
P = .04); however, there was no difference between
groups in baseline International Knee Documentation Committee, ACL Quality
of Life, Knee injury and Osteoarthritis Outcome Score, or Knee injury and
Osteoarthritis Outcome Score subscale scores. Conclusion: Ligamentous laxity, male sex, posterior third medial or lateral meniscal
injury, increased posterior tibial slope, and chronicity were associated
with a high-grade pivot shift in this population deemed high risk for repeat
ACL injury. The effect of tibial slope may be accentuated by the presence of
meniscal injury, supporting the need for meniscal preservation. Baseline
PROMs were similar between patients with and without a high-grade pivot
shift.
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Affiliation(s)
- Lachlan M Batty
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Firth
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Gilbert Moatshe
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Dianne M Bryant
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mark Heard
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Robert G McCormack
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alex Rezansoff
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Devin C Peterson
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Davide Bardana
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Peter B MacDonald
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Peter C M Verdonk
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Tim Spalding
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alan M J Getgood
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | | | - Kevin Willits
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Trevor Birmingham
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Chris Hewison
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Stacey Wanlin
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Firth
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Ryan Pinto
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Ashley Martindale
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Lindsey O'Neill
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Morgan Jennings
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Michal Daniluk
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Dory Boyer
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mauri Zomar
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Karyn Moon
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Raely Pritchett
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Krystan Payne
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Brenda Fan
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Bindu Mohan
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Gregory M Buchko
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Laurie A Hiemstra
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sarah Kerslake
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Jeremy Tynedal
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Greg Stranges
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sheila Mcrae
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - LeeAnne Gullett
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Holly Brown
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alexandra Legary
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alison Longo
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mat Christian
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Celeste Ferguson
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Nick Mohtadi
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Rhamona Barber
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Denise Chan
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Caitlin Campbell
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alexandra Garven
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Karen Pulsifer
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Michelle Mayer
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Nicole Simunovic
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Duong
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - David Robinson
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - David Levy
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Matt Skelly
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Ajaykumar Shanmugaraj
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Fiona Howells
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Murray Tough
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Pete Thompson
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Metcalfe
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Laura Asplin
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alisen Dube
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Louise Clarkson
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Jaclyn Brown
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alison Bolsover
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Carolyn Bradshaw
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Larissa Belgrove
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Francis Millan
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sylvia Turner
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sarah Verdugo
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Janet Lowe
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Debra Dunne
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Kerri McGowan
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Charlie-Marie Suddens
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Geert Declercq
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Kristien Vuylsteke
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mieke Van Haver
- Investigation performed at the Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
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9
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Getgood AMJ, Bryant DM, Litchfield R, Heard M, McCormack RG, Rezansoff A, Peterson D, Bardana D, MacDonald PB, Verdonk PCM, Spalding T, Willits K, Birmingham T, Hewison C, Wanlin S, Firth A, Pinto R, Martindale A, O'Neill L, Jennings M, Daniluk M, Boyer D, Zomar M, Moon K, Pritchett R, Payne K, Fan B, Mohan B, Buchko GM, Hiemstra LA, Kerslake S, Tynedal J, Stranges G, Mcrae S, Gullett L, Brown H, Legary A, Longo A, Christian M, Ferguson C, Mohtadi N, Barber R, Chan D, Campbell C, Garven A, Pulsifer K, Mayer M, Simunovic N, Duong A, Robinson D, Levy D, Skelly M, Shanmugaraj A, Howells F, Tough M, Spalding T, Thompson P, Metcalfe A, Asplin L, Dube A, Clarkson L, Brown J, Bolsover A, Bradshaw C, Belgrove L, Millan F, Turner S, Verdugo S, Lowe J, Dunne D, McGowan K, Suddens CM, Declercq G, Vuylsteke K, Van Haver M. Lateral Extra-articular Tenodesis Reduces Failure of Hamstring Tendon Autograft Anterior Cruciate Ligament Reconstruction: 2-Year Outcomes From the STABILITY Study Randomized Clinical Trial. Am J Sports Med 2020; 48:285-297. [PMID: 31940222 DOI: 10.1177/0363546519896333] [Citation(s) in RCA: 291] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Persistent anterolateral rotatory laxity after anterior cruciate ligament (ACL) reconstruction (ACLR) has been correlated with poor clinical outcomes and graft failure. HYPOTHESIS We hypothesized that a single-bundle, hamstring ACLR in combination with a lateral extra-articular tenodesis (LET) would reduce the risk of ACLR failure in young, active individuals. STUDY DESIGN Randomized controlled trial; Level of evidence, 1. METHODS This is a multicenter, prospective, randomized clinical trial comparing a single-bundle, hamstring tendon ACLR with or without LET performed using a strip of iliotibial band. Patients 25 years or younger with an ACL-deficient knee were included and also had to meet at least 2 of the following 3 criteria: (1) grade 2 pivot shift or greater, (2) a desire to return to high-risk/pivoting sports, (3) and generalized ligamentous laxity (GLL). The primary outcome was ACLR clinical failure, a composite measure of rotatory laxity or a graft rupture. Secondary outcome measures included the P4 pain scale, Marx Activity Rating Scale, Knee injury Osteoarthritis and Outcome Score (KOOS), International Knee Documentation Committee score, and ACL Quality of Life Questionnaire. Patients were reviewed at 3, 6, 12, and 24 months postoperatively. RESULTS A total of 618 patients (297 males; 48%) with a mean age of 18.9 years (range, 14-25 years) were randomized. A total of 436 (87.9%) patients presented preoperatively with high-grade rotatory laxity (grade 2 pivot shift or greater), and 215 (42.1%) were diagnosed as having GLL. There were 18 patients lost to follow-up and 11 who withdrew (~5%). In the ACLR group, 120/298 (40%) patients sustained the primary outcome of clinical failure, compared with 72/291 (25%) in the ACLR+LET group (relative risk reduction [RRR], 0.38; 95% CI, 0.21-0.52; P < .0001). A total of 45 patients experienced graft rupture, 34/298 (11%) in the ACLR group compared with 11/291 (4%) in the ACL+LET group (RRR, 0.67; 95% CI, 0.36-0.83; P < .001). The number needed to treat with LET to prevent 1 patient from graft rupture was 14.3 over the first 2 postoperative years. At 3 months, patients in the ACLR group had less pain as measured by the P4 (P = .003) and KOOS (P = .007), with KOOS pain persisting in favor of the ACLR group to 6 months (P = .02). No clinically important differences in patient-reported outcome measures were found between groups at other time points. The level of sports activity was similar between groups at 2 years after surgery, as measured by the Marx Activity Rating Scale (P = .11). CONCLUSION The addition of LET to a single-bundle hamstring tendon autograft ACLR in young patients at high risk of failure results in a statistically significant, clinically relevant reduction in graft rupture and persistent rotatory laxity at 2 years after surgery. REGISTRATION NCT02018354 ( ClinicalTrials.gov identifier).
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Affiliation(s)
- Alan M J Getgood
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Dianne M Bryant
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Robert Litchfield
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mark Heard
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Robert G McCormack
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alex Rezansoff
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Devin Peterson
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Davide Bardana
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Peter B MacDonald
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Peter C M Verdonk
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Tim Spalding
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Kevin Willits
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Trevor Birmingham
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Chris Hewison
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Stacey Wanlin
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Firth
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Ryan Pinto
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Ashley Martindale
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Lindsey O'Neill
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Morgan Jennings
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Michal Daniluk
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Dory Boyer
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mauri Zomar
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Karyn Moon
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Raely Pritchett
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Krystan Payne
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Brenda Fan
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Bindu Mohan
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Gregory M Buchko
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Laurie A Hiemstra
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sarah Kerslake
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Jeremy Tynedal
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Greg Stranges
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sheila Mcrae
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - LeeAnne Gullett
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Holly Brown
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alexandra Legary
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alison Longo
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mat Christian
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Celeste Ferguson
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Nick Mohtadi
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Rhamona Barber
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Denise Chan
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Caitlin Campbell
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alexandra Garven
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Karen Pulsifer
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Michelle Mayer
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Nicole Simunovic
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Duong
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - David Robinson
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - David Levy
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Matt Skelly
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Ajaykumar Shanmugaraj
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Fiona Howells
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Murray Tough
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Tim Spalding
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Pete Thompson
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Andrew Metcalfe
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Laura Asplin
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alisen Dube
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Louise Clarkson
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Jaclyn Brown
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Alison Bolsover
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Carolyn Bradshaw
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Larissa Belgrove
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Francis Millan
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sylvia Turner
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Sarah Verdugo
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Janet Lowe
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Debra Dunne
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Kerri McGowan
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Charlie-Marie Suddens
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Geert Declercq
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Kristien Vuylsteke
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
| | - Mieke Van Haver
- Investigation performed at The Fowler Kennedy Sport Medicine Clinic, Western University, London, Ontario, Canada
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Abstract
Hardware artificial neural network (ANN) systems with high density synapse array devices can perform massive parallel computing for pattern recognition with low power consumption. To implement a neuromorphic system with on-chip training capability, we need to develop an ideal synapse device with various device requirements, such as scalability, MLC characteristics, low power operation, data retention, and symmetric/linear conductance changes under potentiation/depression modes. Although various devices have been proposed for synapse applications, they have limitations for application in neuromorphic systems. In this paper, we will cover various RRAM synapse devices, such as filamentary switching RRAM (HfOx, TaOx, Cu-CBRAM) and analog RRAM devices, based on interface resistive switching (Pr0.7Ca0.3MnOx and TiOx) and ferroelectric polarization (HfZrOx). By optimizing potentiation/depression conditions, we could improve the conductance linearity and MLC characteristics of filamentary synapse devices. Interface RRAM has better MLC characteristics with limited retention and conductance linearity. By controlling the reactivity of metal electrodes and the oxygen concentration in oxides, we can modulate the synapse characteristics. Metal-Ferroelectric-Insulator-Semiconductor (MFIS) FET devices exhibit good retention characteristics and analog memory characteristics due to polarization. Based on various synapse device characteristics, we have estimated the pattern recognition accuracy of MNIST handwritten digits and CIFAR-10 datasets. We have confirmed that synapse device characteristics directly affect the pattern recognition accuracy of ANNs. In order to simultaneously satisfy all the requirements of synapse devices, it is necessary to develop new technology capable of controlling the movement of oxygen vacancies and metal ions at the atomic scale. Considering the limited synapse characteristics of current 2-terminal RRAM devices, hardware ANNs capable of only off-chip training can be constructed by optimizing the current RRAM devices by limiting the bit number. A 3-terminal synapse device or a device based on a new operation principle should be developed as an alternative for on-chip training applications.
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Affiliation(s)
- K Moon
- Pohang University of Science and Technology (POSTECH), Korea.
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Breathett K, Maffett S, Foraker R, Sturdivant R, Moon K, Hasan A, Franco V, Smith S, Lampert B, Emani S, Haas G, Kahwash R, Hershberger R, Binkley P, Helmkamp L, Colborn K, Peterson P, Sweitzer N, Abraham W. Pilot Randomized Controlled Trial to Reduce Readmission for Heart Failure Using Novel Tablet and Nurse Practitioner Education. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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12
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Lee K, Oh S, Ahn E, Lee J, Jung S, Moon K. P08.55 Lichen secondary metabolite, usnic acid, inhibit glioblastoma progression through the reduction of epithelial-mesenchymal transition and glioma stemness factors. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.188] [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: 11/12/2022] Open
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13
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McClennen E, Richter K, Moon K, Sasson I, Bishop L. The impact of race and ethnicity on assisted reproductive technology (ART) outcomes: a retrospective cohort study. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Gross B, Albuquerque F, Moon K, McDougall C. P-022 The Road Less Traveled: Transarterial Embolization of Dural Arteriovenous Fistulas via the Ascending Pharyngeal Artery. J Neurointerv Surg 2016. [DOI: 10.1136/neurintsurg-2016-012589.64] [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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15
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Levitt MR, McGah PM, Moon K, Albuquerque FC, McDougall CG, Kalani MYS, Kim LJ, Aliseda A. Computational Modeling of Venous Sinus Stenosis in Idiopathic Intracranial Hypertension. AJNR Am J Neuroradiol 2016; 37:1876-1882. [PMID: 27197986 DOI: 10.3174/ajnr.a4826] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 03/31/2016] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND PURPOSE Idiopathic intracranial hypertension has been associated with dural venous sinus stenosis in some patients, but the hemodynamic environment of the dural venous sinuses has not been quantitatively described. Here, we present the first such computational fluid dynamics model by using patient-specific blood pressure measurements. MATERIALS AND METHODS Six patients with idiopathic intracranial hypertension and at least 1 stenosis or atresia at the transverse/sigmoid sinus junction underwent MR venography followed by cerebral venography and manometry throughout the dural venous sinuses. Patient-specific computational fluid dynamics models were created by using MR venography anatomy, with venous pressure measurements as boundary conditions. Blood flow and wall shear stress were calculated for each patient. RESULTS Computational models of the dural venous sinuses were successfully reconstructed in all 6 patients with patient-specific boundary conditions. Three patients demonstrated a pathologic pressure gradient (≥8 mm Hg) across 4 dural venous sinus stenoses. Small sample size precludes statistical comparisons, but average overall flow throughout the dural venous sinuses of patients with pathologic pressure gradients was higher than in those without them (1041.00 ± 506.52 mL/min versus 358.00 ± 190.95 mL/min). Wall shear stress was also higher across stenoses in patients with pathologic pressure gradients (37.66 ± 48.39 Pa versus 7.02 ± 13.60 Pa). CONCLUSIONS The hemodynamic environment of the dural venous sinuses can be computationally modeled by using patient-specific anatomy and physiologic measurements in patients with idiopathic intracranial hypertension. There was substantially higher blood flow and wall shear stress in patients with pathologic pressure gradients.
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Affiliation(s)
- M R Levitt
- From the Departments of Neurological Surgery (M.R.L., L.J.K.) .,Radiology (M.R.L., L.J.K.).,Mechanical Engineering (M.R.L., P.M.M., A.A.), University of Washington, Seattle, Washington
| | - P M McGah
- Mechanical Engineering (M.R.L., P.M.M., A.A.), University of Washington, Seattle, Washington
| | - K Moon
- Department of Neurosurgery (K.M., F.C.A., C.G.M., M.Y.S.K.), Barrow Neurological Institute, Phoenix, Arizona
| | - F C Albuquerque
- Department of Neurosurgery (K.M., F.C.A., C.G.M., M.Y.S.K.), Barrow Neurological Institute, Phoenix, Arizona
| | - C G McDougall
- Department of Neurosurgery (K.M., F.C.A., C.G.M., M.Y.S.K.), Barrow Neurological Institute, Phoenix, Arizona
| | - M Y S Kalani
- Department of Neurosurgery (K.M., F.C.A., C.G.M., M.Y.S.K.), Barrow Neurological Institute, Phoenix, Arizona
| | - L J Kim
- From the Departments of Neurological Surgery (M.R.L., L.J.K.).,Radiology (M.R.L., L.J.K.)
| | - A Aliseda
- Mechanical Engineering (M.R.L., P.M.M., A.A.), University of Washington, Seattle, Washington
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16
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Levitt MR, Park MS, Albuquerque FC, Moon K, Kalani MYS, McDougall CG. Posterior Inferior Cerebellar Artery Patency after Flow-Diverting Stent Treatment. AJNR Am J Neuroradiol 2015; 37:487-9. [PMID: 26427829 DOI: 10.3174/ajnr.a4550] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 08/12/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The rate of PICA occlusion after flow-diverting stent placement for vertebral and vertebrobasilar artery aneurysms is not known. The purpose of this study is to determine the medium-term rate of PICA patency and risk factors for occlusion after such aneurysm treatment. MATERIALS AND METHODS Patients were identified who had vertebral or vertebrobasilar artery aneurysms and who were treated by placing a flow-diverting stent across the PICA ostium. Demographic and procedural factors associated with stent placement were recorded. Patency of the PICA was evaluated immediately after stent placement and on follow-up angiography. RESULTS Thirteen patients with vertebral or vertebrobasilar artery aneurysms were treated in the study period, of whom 4 presented with subarachnoid hemorrhage. The average number of devices that spanned the PICA ostium was 1.77 (range, 1-3), with no immediate PICA occlusions. There were no postoperative strokes in the treated PICA territory, although there was 1 contralateral PICA-territory stroke of unclear etiology without clinical sequelae. In 11 patients with follow-up angiography at a mean of 10.6 months (range, 0.67-27.9 months), the PICA patency rate remained 100%. CONCLUSIONS Flow-diverting stent placement across the PICA ostium in the treatment of vertebral and vertebrobasilar artery aneurysms may not result in immediate or midterm PICA occlusion.
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Affiliation(s)
- M R Levitt
- From the Division of Neurological Surgery (M.R.L., F.C.A., K.M., M.Y.S.K., C.G.M.), Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - M S Park
- Departments of Neurosurgery and Radiology (M.S.P.), University of Utah, Salt Lake City, Utah
| | - F C Albuquerque
- From the Division of Neurological Surgery (M.R.L., F.C.A., K.M., M.Y.S.K., C.G.M.), Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - K Moon
- From the Division of Neurological Surgery (M.R.L., F.C.A., K.M., M.Y.S.K., C.G.M.), Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - M Y S Kalani
- From the Division of Neurological Surgery (M.R.L., F.C.A., K.M., M.Y.S.K., C.G.M.), Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - C G McDougall
- From the Division of Neurological Surgery (M.R.L., F.C.A., K.M., M.Y.S.K., C.G.M.), Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
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Moon K, Levitt M, Park M, Albuquerque F, McDougall C. O-038 treatment of complex ruptured anterior communicating artery aneurysms since the barrow ruptured aneurysm trial (brat). J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.38] [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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Burgers PTPW, Poolman RW, Van Bakel TMJ, Tuinebreijer WE, Zielinski SM, Bhandari M, Patka P, Van Lieshout EMM, Devereaux PJ, Guyatt GH, Einhorn TA, Thabane L, Schemitsch EH, Koval KJ, Frihagen F, Poolman RW, Tetsworth K, Guerra-Farfan E, Walter SD, Sprague S, Swinton M, Scott T, McKay P, Madden K, Heels-Ansdell D, Buckingham L, Duraikannan A, Silva H, Heetveld MJ, Van Lieshout EMM, Burgers PT, Zura RD, Avram V, Manjoo A, Williams D, Antoniou J, Ramsay T, Bogoch ER, Trenholm A, Lyman S, Mazumdar M, Bozic KJ, Luborsky M, Goodman S, Muray S, Korley R, Buckley R, Duffy P, Puloski S, Carcary K, Lorenzo M, McKee MD, Hall JA, Nauth A, Whelan D, Daniels TR, Waddell JP, Ahn H, Vicente MR, Hidy JT, MacNevin MT, Kreder H, Axelrod T, Jenkinson R, Nousiainen M, Stephen D, Wadey V, Kunz M, Milner K, Cagaanan R, MacNevin M, O’Brien PJ, Blachut PA, Broekhuyse HM, Guy P, Lefaivre KA, Slobogean GP, Johal R, Leung I, Coles C, Leighton R, Richardson CG, Biddulph M, Gross M, Dunbar M, Amirault JD, Alexander D, Coady C, Glazebrook M, Johnston D, Oxner W, Reardon G, Wong I, Trask K, MacDonald S, Furey A, Stone C, Parsons M, Stone T, Zomar M, McCormack R, Apostle K, Boyer D, Moola F, Perey B, Viskontas D, Moon K, Moon R, Laflamme Y, Benoit B, Ranger P, Malo M, Fernandes J, Tardif K, Fournier J, Vendittoli PA, Massé V, Roy AG, Lavigne M, Lusignan D, Davis C, Stull P, Weinerman S, Weingarten P, Lindenbaum S, Hewitt M, Danielwicz R, Baker J, Mont M, Delanois DE, Kapadia B, Issa K, Mullen M, Sems A, Foreman B, Parvizi J, Morrison T, Lewis C, Caminiti S, Tornetta P, Creevy WR, Lespasio MJ, Carlisle H, Marcantonio A, Kain M, Specht L, Tilzey J, Garfi J, Mehta S, Esterhai JL, Ahn J, Donegan D, Horan A, McGinnis K, Roberson J, Bradbury T, Erens G, Webb K, Mullis B, Shively K, Parr A, Ertl J, Worman R, Webster M, Cummings J, Frizzell V, Moore M, Jones CB, Ringler JR, Sietsema DL, Walker JE, Kanlic E, Abdelgawad A, Shunia J, DePaolo C, Sutherland S, Alosky R, Zura R, Manson M, Strathy G, Peter K, Johnson P, Morton M, Shaer J, Schrickel T, Hileman B, Hanes M, Chance E, Heinrich EM, Dodgin D, LaBadie M, Zamorano D, Tynan M, Schwarzkopf R, Scolaro JA, Gupta R, Bederman S, Bhatia N, Hoang B, Kiester D, Jones N, Rafijah G, Alavekios D, Lee J, Mehta A, Schroder S, Chao T, Colin V, Dang P(P, Heng SK, Lopez G, Galle S, Pahlavan S, Phan DL, Tapadia M, Bui C, Jain N, Moore T, Moroski N, Pourmand D, Kubiak EN, Gililland J, Rothberg D, Peters C, Pelt C, Stuart AR, Corbey K, Shuler FD, Day J, Garabekyan T, Cheung F, Oliashirazi A, Salava J, Morgan L, Wilson-Byrne T, Cordle MB, Elmans LH, van den Hout JA, Joosten AJP, van Beurden AFA, Bolder SBT, Eygendaal D, Moonen AF, van Geenen RCI, Hoebink EA, Wagenmakers R, van Helden W, van Jonbergen HPW, Roerdink H, Reuver JM, Barnaart AFW, Flikweert ER, Krips R, Mullers JB, Schüller H, Falke MLM, Kurek FJ, Slingerland ACH, van Dijk JP, van Helden WH, Bolhuis HW, Bullens PHJ, Hogervorst M, de Kroon KE, Jansen RH, Steenstra F, Raven EEJ, Fontijne WPJ, Wiersma SC, Boetes B, ten Holder EJT, van der Heide HJL, Nagels J, van der Linden-van der Zwaag EH, Keizer SB, Swen JWA, den Hollander PHC, Thomassen BJW, Molekamp WJK, de Meulemeester FR, Kleipool AEB, Haverlag R, Simons MP, Mutsaerts EL, Kooijman R, Postema RR, Bleker RJ, Lampe HIH, Schuman L, Cheung J, van Bommel F, Winia WP, Haverkamp D, van der Vis H, Nolte PA, van den Bekerom MPJ, de Jong T, van Noort A, Vergroesen DA, Schutte BG, van der Vis HM, Beimers L, de Vries J, Zurcher AW, Albers GR, Rademakers M, Breugem S, van der Haven I, Jan Damen P, Bulstra GH, Campo MM, Somford MP, Haverkamp D, Liew S, Bedi H, Carr A, Chia A, Csongvay S, Donohue C, Doig S, Edwards E, Esser M, Freeman R, Gong A, Li D, Miller R, Ton L, Wang O, Young I, Dowrick A, Murdoch Z, Sage C, Page R, Bainbridge D, Angliss R, Miller B, Thomson A, Brown G, Williams S, Eng K, Bowyer D, Skelley J, Goyal C, Beattie S, Guerado E, Cruz E, Cano JR, Froufe MA, Serra LM, Al-dirra S, Martinez C, Tarazona Santabalbina FJ, Serra JT, Hernandez JT, Garcia MA, Garcia VM, Barrera S, Garrido M, Nordsletten L, Clarke-Jenssen J, Hjorthaug G, Brekke AC, Vesterhus EB, Skaugrud I, Tripathi P, Katiyar S, Shukla P, Swiontkowski M, Guyatt G, Jeray K, Walter S, Viveiros H, Truong V, Koo K, Zhou Q, Maddock D, Simunovic N, Agel J, Zielinski SM, Rangan A, Hanusch BC, Kottam L, Clarkson R, Della Rocca GJ, Slobogean G, Katz J, Gillespie B, Greendale GA, Hartman C, Rubin C, Waddell J, Lemke HM, Oatt A, Buckley RE, Korley R, Johnston K, Powell J, Sanders D, Lawendy A, Tieszer C, Murnaghan J, Nam D, Yee A, Whelan DB, Wild LM, Khan RM, Coady C, Amirault D, Richardson G, Dobbin G, Bicknell R, Yach J, Bardana D, Wood G, Harrison M, Yen D, Lambert S, Howells F, Ward A, Zalzal P, Brien H, Naumetz V, Weening B, Wai EK, Papp S, Gofton WT, Kingwell SP, Johnson G, O’Neil J, Roffey DM, Borsella V, Oliver TM, Jones V, Endres TJ, Agnew SG, Jeray KJ, Broderick JS, Goetz DR, Pace TB, Schaller TM, Porter SE, Tanner SL, Snider RG, Nastoff LA, Bielby SA, Switzer JA, Cole PA, Anderson SA, Lafferty PM, Li M, Ly TV, Marston SB, Foley AL, Vang S, Wright DM, Marcantonio AJ, Kain MSH, Iorio R, Specht LM, Tilzey JF, Lobo MJ, Garfi JS, Vallier HA, Dolenc A, Robinson C, Prayson MJ, Laughlin R, Rubino LJ, May J, Rieser GR, Dulaney-Cripe L, Gayton C, Gorczyca JT, Gross JM, Humphrey CA, Kates S, Noble K, McIntyre AW, Pecorella K, Davis CA, Lindenbaum S, Schwappach J, Baker JK, Rutherford T, Newman H, Lieberman S, Finn E, Robbins K, Hurley M, Lyle L, Mitchell K, Browner K, Whatley E, Payton K, Reeves C, Cannada LK, Karges D, Hill L, Esterhai J, Horan AD, Kaminski CA, Kowalski BN, Keeve JP, Anderson CG, McDonald MD, Hoffman JM, Tarkin I, Siska P, Gruen G, Evans A, Farrell DJ, Irrgang J, Luther A, Cross WW, Cass JR, Sems SA, Torchia ME, Scrabeck T, Jenkins M, Dumais J, Romero AW, Sagebien CA, Butler MS, Monica JT, Seuffert P, Hsu JR, Ficke J, Charlton M, Napierala M, Fan M, Tannoury C, Archdeacon M, Finnan R, Le T, Wyrick J, Hess S, Brennan ML, Probe R, Kile E, Mills K, Clipper L, Yu M, Erwin K, Horwitz D, Strohecker K, Swenson TK, Schmidt AH, Westberg JR, Aurang K, Zohman G, Peterson B, Huff RB, Baele J, Weber T, Edison M, McBeth J, Ertl JP, Parr JA, Moore MM, Tobias E, Thomas E, DePaolo CJ, Shell LE, Hampton L, Shepard S, Nanney T, Cuento C, Cantu RV, Henderson ER, Eickhoff LS, Hammerberg EM, Stahel P, Hak D, Mauffrey C, Gibula D, Gissel H, Henderson C, Zamorano DP, Tynan MC, Lawson D, Crist BD, Murtha YM, Anderson LK, Linehan C, Pilling L, Lewis CG, Sullivan RJ, Roper E, Obremskey W, Kregor P, Richards JE, Stringfellow K, Dohm MP, Zellar A, Segers MJM, Zijl JAC, Verhoeven B, Smits AB, de Vries JPPM, Fioole B, van der Hoeven H, Theunissen EBM, de Vries Reilingh TS, Govaert L, Wittich P, de Brauw M, Wille J, Go PM, Ritchie ED, Wessel RN, Hammacher ER, Visser GA, Stockmann H, Silvis R, Snellen JP, Rijbroek B, Scheepers JJG, Vermeulen EGJ, Siroen MPC, Vuylsteke R, Brom HLF, Rijna H, de Rijcke PAR, Koppert CL, Buijk SE, Groenendijk RPR, Dawson I, Tetteroo GWM, Bruijninckx MMM, Doornebosch PG, de Graaf EJR, van der Elst M, van der Pol CC, van’t Riet M, Karsten TM, de Vries MR, Stassen LPS, Schep NWL, Ben Schmidt G, Hoffman WH, van der Heijden FH, Willems WJ, van der Hart CP, Turckan K, Festen S, de Nies F, Out NJM, Bosma J, van Kampen A, Biert J, van Vugt AB, Edwards MJR, Blokhuis TJ, Frölke JPM, Geeraedts LMG, Gardeniers JWM, Tan ET, Poelhekke LM, de Waal Malefijt MC, Schreurs B, Roukema GR, Josaputra HA, Keller P, de Rooij PD, Kuiken H, Boxma H, Cleffken BI, Liem R, Rhemrev SJ, Bosman CHR, de Mol van Otterloo A, Hoogendoorn J, de Vries AC, Meylaerts SAG, Verhofstad MHJ, Meijer J, van Egmond T, van der Brand I, Patka P, Eversdijk MG, Peters R, Den Hartog D, Van Waes OJF, Oprel P, Campo M, Verhagen R, Albers GR, Simmermacher RKJ, van Mulken J, van Wessem K, van Gaalen SM, Leenen LPH, Bronkhorst MW, Guicherit OR, Goslings JC, Ponsen KJ, Bhatia M, Arora V, Tyagi V, Gupta A, Jain N, Khan F, Sharma A, Sanghavi A, Trivedi M, Rai A, Subash, Rai K, Yadav V, Singh S, Prasad AS, Mishra V, Sundaresh DC, Khanna A, Cherian JJ, Olakkengil DJ, Sharma G, Dadi A, Palla N, Ganguly U, Rai BS, Rajakumar J, Hull P, Lewis S, Evans S, Nanda R, Logishetty R, Anand S, Bowler C, Jennings A, Chuter G, Rose G, Horner G, Clark C, Eke K, Reed M, Herriott C, Dobb C, Curry H, Etherington G, Jain A, Moaveni A, Russ M, Donald G, Weinrauch P, Pincus P, Yang S, Halliday B, Gervais T, Holt M, Flynn A, Pirpiris M, Love D, Bucknill A, Farrugia RJ, Ianssen T, Amundsen A, Brattgjerd JE, Borch T, Bøe B, Flatøy B, Hasselund S, Haug KJ, Hemlock K, Hoseth TM, Jomaas G, Kibsgård T, Lona T, Moatshe G, Müller O, Molund M, Nicolaisen T, Nilsen F, Rydinge J, Smedsrud M, Stødle A, Trommer A, Ugland S, Karlsten A, Ekås G, Pape HC, Knobe M, Pfeifer R. Reliability, validity, and responsiveness of the Western Ontario and McMaster Universities Osteoarthritis Index for elderly patients with a femoral neck fracture. J Bone Joint Surg Am 2015; 97:751-7. [PMID: 25948522 DOI: 10.2106/jbjs.n.00542] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) has been extensively evaluated in groups of patients with osteoarthritis, yet not in patients with a femoral neck fracture. This study aimed to determine the reliability, construct validity, and responsiveness of the WOMAC compared with the Short Form-12 (SF-12) and the EuroQol 5D (EQ-5D) questionnaires for the assessment of elderly patients with a femoral neck fracture. METHODS Reliability was tested by assessing the Cronbach alpha. Construct validity was determined with the Pearson correlation coefficient. Change scores were calculated from ten weeks to twelve months of follow-up. Standardized response means and floor and ceiling effects were determined. Analyses were performed to compare the results for patients less than eighty years old with those for patients eighty years of age or older. RESULTS The mean WOMAC total score was 89 points before the fracture in the younger patients and increased from 70 points at ten weeks to 81 points at two years postoperatively. In the older age group, these scores were 86, 75, and 78 points. The mean WOMAC pain scores before the fracture and at ten weeks and two years postoperatively were 92, 76, and 87 points, respectively, in the younger age group and 92, 84, and 93 points in the older age group. Function scores were 89, 68, and 79 points for the younger age group and 84, 71, and 73 points for the older age group. The Cronbach alpha for pain, stiffness, function, and the total scale ranged from 0.83 to 0.98 for the younger age group and from 0.79 to 0.97 for the older age group. Construct validity was good, with 82% and 79% of predefined hypotheses confirmed in the younger and older age groups, respectively. Responsiveness was moderate. No floor effects were found. Moderate to large ceiling effects were found for pain and stiffness scales at ten weeks and twelve months in younger patients (18% to 36%) and in the older age group (38% to 53%). CONCLUSIONS The WOMAC showed good reliability, construct validity, and responsiveness in both age groups of elderly patients with a femoral neck fracture who had been physically and mentally fit before the fracture. The instrument is suitable for use in future clinical studies in these populations. CLINICAL RELEVANCE The results are based on two clinical trials. The questionnaires used concern pure, clinically relevant issues (ability to walk, climb stairs, etc.). Moreover, the results can be used for future research comparing clinical outcomes (or treatments) for populations with a femoral neck fracture.
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Affiliation(s)
- Paul T P W Burgers
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands. E-mail address for P.T.P.W. Burgers: . E-mail address for T.M.J. Van Bakel: . E-mail address for W.E. Tuinebreijer: . E-mail address for S.M. Zielinski: . E-mail address for E.M.M. Van Lieshout:
| | - Rudolf W Poolman
- Joint Research, Department of Orthopaedic Surgery, Onze Lieve Vrouwe Gasthuis, P.O. Box 95500, 1090 HM Amsterdam, the Netherlands. E-mail address:
| | - Theodorus M J Van Bakel
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands. E-mail address for P.T.P.W. Burgers: . E-mail address for T.M.J. Van Bakel: . E-mail address for W.E. Tuinebreijer: . E-mail address for S.M. Zielinski: . E-mail address for E.M.M. Van Lieshout:
| | - Wim E Tuinebreijer
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands. E-mail address for P.T.P.W. Burgers: . E-mail address for T.M.J. Van Bakel: . E-mail address for W.E. Tuinebreijer: . E-mail address for S.M. Zielinski: . E-mail address for E.M.M. Van Lieshout:
| | - Stephanie M Zielinski
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands. E-mail address for P.T.P.W. Burgers: . E-mail address for T.M.J. Van Bakel: . E-mail address for W.E. Tuinebreijer: . E-mail address for S.M. Zielinski: . E-mail address for E.M.M. Van Lieshout:
| | - Mohit Bhandari
- Department of Clinical Epidemiology and Biostatistics, McMaster University, HSC 2C, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada. E-mail address:
| | - Peter Patka
- Department of Emergency Medicine, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands. E-mail address:
| | - Esther M M Van Lieshout
- Trauma Research Unit, Department of Surgery, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands. E-mail address for P.T.P.W. Burgers: . E-mail address for T.M.J. Van Bakel: . E-mail address for W.E. Tuinebreijer: . E-mail address for S.M. Zielinski: . E-mail address for E.M.M. Van Lieshout:
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Moon K, Mizuguchi S, Tachibana K, Takeuchi M. Tidal volume accuracy during non-invasive ventilation with modern neonatal mechanical ventilators. Crit Care 2015. [PMCID: PMC4470642 DOI: 10.1186/cc14342] [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: 11/25/2022] Open
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Tong L, Huang C, Ramalli A, Tortoli P, Luo J, D'hooge J, Tzemos N, Mordi I, Bishay T, Bishay T, Negishi T, Hristova K, Kurosawa K, Bansal M, Thavendiranathan P, Yuda S, Popescu B, Vinereanu D, Penicka M, Marwick T, Hamed W, Kamel M, Yaseen R, El-Barbary H, Nemes A, Kis O, Gavaller H, Kanyo E, Forster T, Angelis A, Vlachopoulos C, Ioakimidis N, Felekos I, Chrysohoou C, Aznaouridis K, Abdelrasoul M, Terentes D, Ageli K, Stefanadis C, Kurnicka K, Domienik-Karlowicz J, Lichodziejewska B, Goliszek S, Grudzka K, Krupa M, Dzikowska-Diduch O, Ciurzynski M, Pruszczyk P, Gual Capllonch F, Lopez Ayerbe J, Teis A, Ferrer E, Vallejo N, Junca G, Pla R, Bayes-Genis A, Schwaiger J, Knight D, Gallimore A, Schreiber B, Handler C, Coghlan J, Bruno RM, Giardini G, Malacrida S, Catuzzo B, Armenia S, Brustia R, Ghiadoni L, Cauchy E, Pratali L, Kim K, Lee K, Cho J, Yoon H, Ahn Y, Jeong M, Cho J, Park J, Cho S, Nastase O, Enache R, Mateescu A, Botezatu D, Popescu B, Ginghina C, Gu H, Sinha M, Simpson J, Chowienczyk P, Fazlinezhad A, Tashakori Behesthi A, Homaei F, Mostafavi H, Hosseini G, Bakaeiyan M, Boutsikou M, Petrou E, Dimopoulos A, Dritsas A, Leontiadis E, Karatasakis G, Sahin ST, Yurdakul S, Yilmaz N, Cengiz B, Cagatay Y, Aytekin S, Yavuz S, Karlsen S, Dahlslett T, Grenne B, Sjoli B, Smiseth O, Edvardsen T, Brunvand H, Nasr G, Nasr A, Eleraki A, Elrefai S, Mordi I, Sonecki P, Tzemos N, Gustafsson U, Naar J, Stahlberg M, Cerne A, Capotosto L, Rosato E, D'angeli I, Azzano A, Truscelli G, De Maio M, Salsano F, Terzano C, Mangieri E, Vitarelli A, Renard S, Najih H, Mancini J, Jacquier A, Haentjens J, Gaubert J, Habib G, Caminiti G, D'antoni V, D'antoni V, Cardaci V, Cardaci V, Conti V, Conti V, Volterrani M, Volterrani M, Ahn J, Kim D, Lee H, Iliuta L, Lo Iudice F, Esposito R, Lembo M, Santoro C, Ballo P, Mondillo S, De Simone G, Galderisi M, Hwang Y, Kim J, Kim J, Moon K, Yoo K, Kim C, Tagliamonte E, Rigo F, Cirillo T, Caruso A, Astarita C, Cice G, Quaranta G, Romano C, Capuano N, Calabro' R, Zagatina A, Zhuravskaya N, Guseva O, Huttin O, Benichou M, Voilliot D, Venner C, Micard E, Girerd N, Sadoul N, Moulin F, Juilliere Y, Selton-Suty C, Baron T, Christersson C, Johansson K, Flachskampf F, Lee S, Lee J, Hur S, Park J, Yun J, Song S, Kim W, Ko J, Nyktari E, Bilal S, Ali S, Izgi C, Prasad S, Aly M, Kleijn S, Kandil H, Kamp O, Beladan C, Calin A, Rosca M, Craciun A, Gurzun M, Calin C, Enache R, Mateescu A, Ginghina C, Popescu B, Mornos C, Mornos A, Ionac A, Cozma D, Crisan S, Popescu I, Ionescu G, Petrescu L, Camacho S, Gamaza Chulian S, Carmona R, Diaz E, Giraldez A, Gutierrez A, Toro R, Benezet J, Antonini-Canterin F, Vriz O, La Carrubba S, Poli S, Leiballi E, Zito C, Careri S, Caruso R, Pellegrinet M, Nicolosi G, Kong W, Kyu K, Wong R, Tay E, Yip J, Yeo T, Poh K, Correia M, Delgado A, Marmelo B, Correia E, Abreu L, Cabral C, Gama P, Santos O, Rahman M, Borges IP, Peixoto E, Peixoto R, Peixoto R, Marcolla V, Okura H, Kanai M, Murata E, Kataoka T, Stoebe S, Tarr A, Pfeiffer D, Hagendorff A, Generati G, Bandera F, Pellegrino M, Alfonzetti E, Labate V, Guazzi M, Kuznetsov V, Yaroslavskaya E, Pushkarev G, Krinochkin D, Zyrianov I, Carigi S, Baldazzi F, Bologna F, Amati S, Venturi P, Grosseto D, Biagetti C, Fabbri E, Arlotti M, Piovaccari G, Rahbi H, Bin Abdulhaq A, Tleyjeh I, Santoro C, Galderisi M, Costantino M, Tarsia G, Innelli P, Dores E, Esposito G, Matera A, De Simone G, Trimarco B, Capotosto L, Azzano A, Mukred K, Ashurov R, Tanzilli G, Mangieri E, Vitarelli A, Merlo M, Gigli M, Stolfo D, Pinamonti B, Antonini Canterin F, Muca M, D'angelo G, Scapol S, Di Nucci M, Sinagra G, Behaghel A, Feneon D, Fournet M, Thebault C, Martins R, Mabo P, Leclercq C, Daubert C, Donal E, Davinder Pal S, Prakash Chand N, Sanjeev A, Rajeev M, Ankur D, Ram Gopal S, Mzoughi K, Zairi I, Jabeur M, Ben Moussa F, Ben Chaabene A, Kamoun S, Mrabet K, Fennira S, Zargouni A, Kraiem S, Demkina A, Hashieva F, Krylova N, Kovalevskaya E, Potehkina N, Zaroui A, Ben Said R, Smaali S, Rekik B, Ben Hlima M, Mizouni H, Mechmeche R, Mourali M, Malhotra A, Sheikh N, Dhutia H, Siva A, Narain R, Merghani A, Millar L, Walker M, Sharma S, Papadakis M, Siam-Tsieu V, Mansencal N, Arslan M, Deblaise J, Dubourg O, Zaroui A, Rekik B, Ben Said R, Boudiche S, Larbi N, Tababi N, Hannachi S, Mechmeche R, Mourali M, Mechmeche R, Zaroui A, Chalbia T, Ben Halima M, Rekik B, Boussada R, Mourali M, Lipari P, Bonapace S, Valbusa F, Rossi A, Zenari L, Lanzoni L, Targher G, Canali G, Molon G, Barbieri E, Novo G, Giambanco S, Sutera M, Bonomo V, Giambanco F, Rotolo A, Evola S, Assennato P, Novo S, Budnik M, Piatkowski R, Kochanowski J, Opolski G, Chatzistamatiou E, Mpampatseva Vagena I, Manakos K, Moustakas G, Konstantinidis D, Memo G, Mitsakis O, Kasakogias A, Syros P, Kallikazaros I, Marketou M, Parthenakis F, Kalyva N, Pontikoglou C, Maragkoudakis S, Zacharis E, Patrianakos A, Maragoudakis F, Papadaki H, Vardas P, Rodrigues A, Perandini L, Souza T, Sa-Pinto A, Borba E, Arruda A, Furtado M, Carvalho F, Bonfa E, Andrade J, Hlubocka Z, Malinova V, Palecek T, Danzig V, Kuchynka P, Dostalova G, Zeman J, Linhart A, Chatzistamatiou E, Konstantinidis D, Memo G, Mpampatzeva Vagena I, Moustakas G, Manakos K, Trachanas K, Vergi N, Feretou A, Kallikazaros I, Corut H, Sade L, Ozin B, Atar I, Turgay O, Muderrisoglu H, Ledakowicz-Polak A, Polak L, Krauza G, Zielinska M, Szulik M, Streb W, Wozniak A, Lenarczyk R, Sliwinska A, Kalarus Z, Kukulski T, Nogueira M, Branco L, Agapito A, Galrinho A, Borba A, Teixeira P, Monteiro A, Ramos R, Cacela D, Cruz Ferreira R, Guala A, Camporeale C, Tosello F, Canuto C, Ridolfi L, Chatzistamatiou E, Moustakas G, Memo G, Konstantinidis D, Mpampatzeva Vagena I, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Hristova K, Marinov R, Stamenov G, Mihova M, Persenska S, Racheva A, Plaskota K, Trojnarska O, Bartczak A, Grajek S, Ramush Bejiqi R, Retkoceri R, Bejiqi H, Beha A, Surdulli S, Dreyfus J, Durand-Viel G, Cimadevilla C, Brochet E, Vahanian A, Messika-Zeitoun D, Jin C, Fang F, Meng F, Kam K, Sun J, Tsui G, Wong K, Wan S, Yu C, Lee A, Cho IJ, Chung H, Heo R, Ha S, Hong G, Shim C, Chang H, Ha J, Chung N, Moral S, Gruosso D, Galuppo V, Teixido G, Rodriguez-Palomares J, Gutierrez L, Evangelista A, Moral S, Gruosso D, Galuppo V, Teixido G, Rodriguez-Palomares J, Gutierrez L, Evangelista A, Moral S, Gruosso D, Galuppo V, Teixido G, Rodriguez-Palomares J, Gutierrez L, Evangelista A, Alexopoulos A, Dawson D, Nihoyannopoulos P, Zainal Abidin HA, Ismail J, Arshad K, Ibrahim Z, Lim C, Abd Rahman E, Kasim S, Peteiro J, Barrio A, Escudero A, Bouzas-Mosquera A, Yanez J, Martinez D, Castro-Beiras A, Scali M, Simioniuc A, Mandoli G, Lombardo A, Massaro F, Di Bello V, Marzilli M, Dini F, Adachi H, Tomono J, Oshima S, Merchan Ortega G, Bravo Bustos D, Lazaro Garcia R, Sanchez Espino A, Macancela Quinones J, Ikuta I, Ruiz Lopez M, Valencia Serrano F, Bonaque Gonzalez J, Gomez Recio M, Romano G, D'ancona G, Pilato G, Di Gesaro G, Clemenza F, Raffa G, Scardulla C, Sciacca S, Lancellotti P, Pilato M, Addetia K, Takeuchi M, Maffessanti F, Weinert L, Hamilton J, Mor-Avi V, Lang R, Sugano A, Seo Y, Watabe H, Kakefuda Y, Aihara H, Nishina H, Ishizu T, Fumikura Y, Noguchi Y, Aonuma K, Luo X, Fang F, Lee A, Shang Q, Yu C, Sammut EC, Chabinok R, Jackson T, Siarkos M, Lee L, Carr-White G, Rajani R, Kapetanakis S, Byrne D, Walsh J, Ellis L, Mckiernan S, Norris S, King G, Murphy R, Hristova K, Katova T, Simova I, Kostova V, Shuie I, Ferferieva V, Bogdanova V, Castelon X, Nemes A, Sasi V, Domsik P, Kalapos A, Lengyel C, Orosz A, Forster T, Grapsa J, Demir O, Dawson D, Sharma R, Senior R, Nihoyannopoulos P, Pilichowska E, Zaborska B, Baran J, Stec S, Kulakowski P, Budaj A, Kosmala W, Kaye G, Saito M, Negishi K, Marwick T, Maceira Gonzalez AM, Ripoll C, Cosin-Sales J, Igual B, Salazar J, Belloch V, Dulai RS, Taylor A, Gupta S. Poster session 1: Wednesday 3 December 2014, 09:00-16:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2014; 15:ii25-ii51. [DOI: 10.1093/ehjci/jeu248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
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Jung S, Wen M, Moon K, Jiang S, Min J. P03.03 * TARGETING ORTHOTOPIC GLIOMA IN MICE WITH GENETICALLY ENGINEERED SALMONELLA TYPHIMURIUM. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Park M, Nanaszko M, Sanborn M, Moon K, Albuquerque F, McDougall C. O-019 Re-treatment Rates Following Pipeline Embolization Device Alone versus Pipeline and Coil Embolization of Cerebral Aneurysms: A Single Center Experience. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Park M, Nanaszko M, Sanborn M, Moon K, McDougall C, Albuquerque F. E-003 Aneurysm Re-treatments Following Recurrences After Initial Use of the Pipeline Embolization Device. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.70] [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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Park M, Nanaszko M, Sanborn M, Moon K, McDougall C, Albuquerque F. E-002 Efficacy of the Pipeline Embolization Device in the Treatment of Previously-treated Aneurysms. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.69] [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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Moon K, Albuquerque F, Ducruet A, Crowley R, McDougall C. O-003 Resolution of Cranial Neuropathies Following Treatment of Intracranial Aneurysms with the Pipeline Embolization Device. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Moon K, Kang M, Jeon Y, Kim J. AB1076 The usefulness of high-resolution ultrasonography of the first metatarsophalangeal joint in acute gout. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1075] [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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Roth P, Silginer M, Goodman SL, Hasenbach K, Thies S, Schraml P, Tabatabai G, Moch H, Tritschler I, Weller M, Perin A, Verginelli F, Dali R, Hei Man Fung K, Lo R, Longatti P, Guiot M, Del Maestro RF, Rossi S, Di Porzio U, Stechishin O, Weiss S, Stifani S, Sanzey M, Golebiewska A, Stieber D, Nazarov P, Muller A, Vallar L, Niclou SP, Lawler SE, Chiocca E, Williams SP, Wanka C, Steinbach JP, Rieger J, Lavon I, Zrihan D, Refael M, Siegal T, Sminia P, Van Nifterik KA, Van den Berg J, Lafleur VM, Stalpers LJA, Slotman BJ, Di stefano A, Enciso-Mora V, Marie Y, Desestret V, Labussiere M, Idbaih A, Hoang-Xuan K, Delattre J, Houlston R, Sanson M, Woehrer A, Slavc I, Stefanits H, Waldhoer T, Heinzl H, Zielonke N, Czech T, Hainfellner JA, Haberler C, Zouaoui S, Darlix A, Virion J, Rigau V, Mathieu-Daude H, Bauchet F, Figarella-Branger D, Duffau H, Taillandier L, Bauchet L, Naydenov E, Popov R, Tanova R, Minkin K, De Vleeschouwer S, Van Gool S, Cavaletti G, Wilbers J, Hoebers F, Boogerd W, van Werkhoven E, Nowee M, Hart G, van Dijk E, Kappelle A, Dorresteijn L, Furuse M, Miyata T, Yoritsune E, Kawabata S, Kuroiwa T, Miyatake S, Boele FW, Heimans JJ, Aaronson NK, Peereboom DM, Sloan AE, Supko JG, Ye X, Rich JN, Prados MD, Ahluwalia M, Grossman SA, Spiegl-Kreinecker S, Loetsch D, Taphoorn MJB, Wild M, Ghanim B, Pirker C, Pichler J, Serge W, Lenz S, Wurm G, Berger W, Tamiya T, Miyake K, Postma TJ, Okada M, Kawai N, Grossi I, Rigakos G, Lampropoulos S, Stavridi F, Tsoulos N, Nasioulas G, Papadopoulou E, Razis E, Reijneveld JC, Schroeteler J, Klosterkemper Y, Schwake M, Stummer W, Ewelt C, Field KM, Rosenthal MA, Wheeler H, Cher L, Hovey E, Klein M, Nowak AK, Brown C, Livingstone A, Sawkins K, Simes J, Linsenmann T, Jawork A, Hagemann C, Kessler AF, Berg F, Habets EJJ, Lohr M, Ernestus RI, Vince GH, Rodriguez FJ, Heaphy CM, Nguyen DN, de Wilde RF, Orr B, Raabe E, Eberhart CG, Taphoorn MJB, Meeker AK, Klein SP, Van Calenbergh F, van Loon J, Menten J, Clement P, De Vleeschouwer S, 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F, Delphino C, Metellus P, Pirisi V, Figarella-Branger D, Chinot O, Ouafik L, Berthois Y, Nakamura H, Makino K, Hide T, Yano S, Kuratsu J, Stevens GHJ, Ahluwalia M, Hashemi N, Berbis J, Peereboom D, Barnett GH, Wibom C, Ghasimi S, Van Loo P, Brannstrom T, Trygg J, Henriksson R, Bergenheim T, Andersson U, Auquier P, Ryden P, Melin B, Ackerl MS, Flechl B, Dieckmann K, Preusser M, Widhalm G, Sax C, Marosi C, Seliger C, Kumthekar PU, Leukel P, Jachnik B, Bogdahn U, Vollmann A, Hau P, Chung SA, Luk PP, Shen H, Decollogne S, Day BW, Grimm SA, Stringer BW, Hogg PJ, Dilda PJ, McDonald KL, Cernea DR, Pruteanu P, Todor N, Florian S, Bogdan V, Cercea C, Chandler J, Leibetseder A, Ackerl M, Flechl B, Sax C, Widhalm G, Dieckmann K, Preusser M, Marosi C, Torres-Martin M, Pena-Granero C, Helenowski IB, Isla A, Pinto GR, Custodio AC, Melendez B, Castresana JS, Rey JA, Banissi C, Maubant S, Rancic M, Carpentier AF, Marymont M, Stancheva G, Goranova T, Laleva M, Kamenova M, Mitkova A, Velinov N, Kaneva R, Poptodorov G, Mitev V, Gabrovsky N, Rademaker A, Piccirillo SGM, Spiteri I, Sottoriva A, Marko N, Tavare' S, Collins P, Watts C, Fedrigo CA, Da Rocha AB, Stalpers LJA, Wagner L, Baumert BG, Slotman B, Peters GJ, Sminia P, Fernandez M, Gawrisch VJ, Ruttgers M, Jachnik B, Proescholdt M, Bogdahn U, Stell B, Vollmann-Zwerenz A, Hau P, Trevisan E, Magistrello M, Bertero L, Bosa C, Greco Crasto S, Garbossa D, Lolli I, Ruda R, Raizer J, Soffietti R, Ichikawa T, Kurozumi K, Onishi M, Ishida J, Shimazu Y, Fujii K, Inoue S, Chiocca EA, Kaur B, Kumthekar PU, Date I, Dictus C, Friauf S, Valous NA, Muerle B, Unterberg AW, Herold-Mende CC, Caroli M, Di Dristofori A, Lucarella F, Grimm S, Menghetti C, Lanfranchi G, Gaini SM, Duerinck J, Clement P, Bouttens F, Neyns B, D'Hondt L, Gennigens C, Staelens Y, Jacobs DI, Joosens E, Van Fraeyenhove F, Rogiers A, Darlix A, Baumann C, Lorgis V, Blonski M, Chauffert B, Zouaoui S, Beauchesne P, Stell BV, Taillandier L, Vaccaro V, Pace A, Vidiri A, Vari S, Telera S, Giannarelli D, Russillo M, Anelli V, Carapella CM, Rademaker A, Fabi A, Florian SI, Soritau O, Neagoe I, Abrudan C, Tomuleasa C, Cernea D, Petrescu M, Baritchii A, Florian SI, Chandler J, Abrudan C, Baritchii A, Fornara O, Mirza S, Khan Z, Odeberg J, Stragliotto G, Butler L, Soderberg-Naucler C, Soderberg Naucler C, Marymont MH, Stragliotto G, Peredo I, Rahbar A, Lilja A, Taher C, Orrego A, Wolmer Solberg N, Brandes AA, Depenni R, Marcello N, Helenowski IB, Valentini A, Faedi M, Urbini B, Crisi G, Franceschi E, Poggi R, Baruzzi A, Berghauser Pont LME, Kloezeman JJ, French PJ, Wagner L, Dirven CMF, Lamfers MLM, Leenstra SL, Stragliotto G, Bartek J, Hylin S, Peredo I, Rahbar A, Soderberg Naucler C, Dahlrot RH, Raizer JJ, Kristensen BW, Hjelmborg JVB, Herrstedt J, Hansen S, Nittby HC, Persson BRR, Ceberg C, Widegren B, Salford LG, Poulsen HS, Claudel G, Grunnet K, Michaelsen SR, Broholm H, Christensen IJ, Tinchon A, Oberndorfer S, Marosi C, Ruda R, Sax C, Calabek B, Muller C, 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I, Kang S, Sin G, Shim J, Lee S, Huh Y, Kim E, Chang J, Kim S, Hong Y, Kim D, Lefranc F, Verschuere T, De Witte O, Van Gool S, Kiss R, DeVleeschouwer S, Ewelt C, Ardon H, Suero E, Gunes D, Wolfer J, Fischer B, Stummer W, Thorsteinsdottir J, Fu P, Gehrmann M, Multhoff G, Tonn JC, Schichor C, Jachtenberg J, Bakker Schut T, Puppels G, French P, Kros M, Lamfers M, Leenstra S, Costello PC, McDonald W, MacDonald D, Zlatescu M, Megyesi J, Rossetto M, Gallego Perez-Larraya J, Boisselier B, Ciccarino P, Labussiere M, Marie Y, Delattre J, SANSON M, Ilhan-Mutlu A, Wohrer A, Berghoff AS, Widhalm G, Marosi C, Wagner L, Preusser M, Di Stefano A, Gallego Perez-Larraya J, Ducray F, Boisselier B, Labussiere M, Paris S, Cheneau C, Delattre J, Sanson M, Lonnqvist F, Gaillard PJ, Gladdines W, Boogerd W, van Tellingen O, Milojkovic Kerklaan B, Schellens JHM, Brandsma D, Denicolai E, Baeza-Kallee N, Tchoghandjian A, Beclin C, Figarella-Branger D, Rahman CV, Smith SJ, Morgan PS, Langmack KA, Macarthur DC, Rose FR, Shakesheff KM, Grundy RG, Rahman R, Nowosielski M, DiFranco MD, Putzer D, Seiz M, Jacobs AH, Stockhammer G, Hutterer M, Okada M, Shishido H, Hatakeyama T, Shinomiya A, Miyake K, Kawai N, Tamiya T, Miyake K, Shinomiya A, Okada M, Hatakeyama T, Kawai N, Tamiya T, Alexiou GA, Tsiouris S, Papadopoulos A, Al-Bokharhli J, Kyritsis AP, Voulgaris S, Fotopoulos AD, Roelcke U, Boxheimer L, Fathi AR, Schwyzer L, Ortega M, Berberat J, Grobholz R, Remonda L, Oikawa M, Sato K, Ito T, Sugio H, Ozaki Y, Nakamura H, Schwyzer L, Berberat J, Boxheimer L, Remonda L, Roelcke U, Kozic D, Njagulj V, Gacesa JP, Prvulovic N, Semnic R, Basmaci M, Hasturk AE, Hasturk AE, Basmaci M, Bahr O, Weise L, Harter PN, Weiss C, Starzetz T, Steinbach JP, Mittelbronn M, Hattingen E, Price SJ, Young AMH, Thomas OM, Mohsen LA, Frary AJ, Lupson VC, McLean MA, Weiss C, Neuschmelting V, Eisenbeis A, Nettekoven C, Grefkes C, Goldbrunner R, Weiss C, Neuschmelting V, Eisenbeis A, Nettekoven C, Grefkes C, Goldbrunner R, Weiss C, Neuschmelting V, Eisenbeis A, Nettekoven C, Rehme A, Grefkes C, Goldbrunner R, Grech-Sollars M, Saunders DE, Phipps KP, Clayden JD, Clark CA, Schwyzer L, Berberat J, Boxheimer L, Remonda L, Roelcke U, Booth TC, Larkin T, Yuan Y, Kettunen M, Markowetz F, Scoffings D, Jefferies S, Brindle KM, Pica A, Hauf M, Slotboom J, Beck J, Schucht P, Aebersold DM, Wiest R, Pace A, Marzi S, Fabi A, Carapella CM, Giovinazzo G, Marucci L, Anelli V, Vidiri A, Riva M, Castellano A, Raneri F, Pessina F, Fava E, Falini A, Bello L, Gahramanov S, Muldoon LL, Varallyay CG, Li X, Kraemer DF, Fu R, Hamilton BE, Rooney WD, Neuwelt EA, Hawkins-Daarud A, Rockne R, Muzi M, Patridge S, Kinahan P, Swanson KR, Radbruch A, Fladt J, Wiestler B, Baumer P, Heiland S, Wick W, Bendszus M, Lwin M, Al-Salihi O, Sharpe G, Izmailov TR, Panshin GA, Datsenko PV, Kavsan VM, Balynska EV, Chernolovskaya EL, Zenkova MA, Buhl RM, Janz C, Gomez Gallego J, Albanna W, Rashidi A, Schmiegelow P, Buhl RM, Alexiou GA, Vartholomatos G, Karamoutsios A, Voulgaris S, Shen D, Wang J, Qiu Z, Chen F, Chen Z, Miwa K, Shinoda J, Ito T, Yokoyama K, Yamada M, Yamada J, Yano H, Iwama T, Brokinkel B, Schober O, Heindel W, Hargus G, Paulus W, Stummer W, Woelfer J, Aoki T, Arakawa Y, Ueba T, Miyatake S, Nozaki K, Taki W, Tsukahara T, Miyamoto S, Matsutani M, Satou K, Ito T, Takanashi M, Oikawa M, Ozaki Y, Sugio H, Nakamura H. Abstracts of the 10th Congress of the European Association of NeuroOncology. Marseille, France. September 6-9, 2012. Neuro Oncol 2012; 14 Suppl 3:iii1-109. [PMID: 22977921 DOI: 10.1093/neuonc/nos183] [Citation(s) in RCA: 2] [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: 11/14/2022] Open
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Beall S, Moon K, Widra E, DeCherney A, Chang F, Richter K. Matched samples comparison of in vitro fertilization (IVF) clinical outcomes associated with leuprolide acetate (LA) versus human chorionic gonadotropin (hCG) trigger for oocyte maturation. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.192] [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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Beall S, Moon K, Widra E, Segars J, Chang F, Richter K. Human chorionic gonadotropin (hCG) re-trigger following a poor response to leuprolide acetate (LA) trigger is not associated with poor in vitro fertilization (IVF) treatment outcomes. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.187] [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: 10/28/2022]
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Kim MD, Moon K. Readout of superconducting flux qubit state with a Cooper pair box. J Phys Condens Matter 2012; 24:225305. [PMID: 22585418 DOI: 10.1088/0953-8984/24/22/225305] [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] [Indexed: 05/31/2023]
Abstract
We study a readout scheme of a superconducting flux qubit state with a Cooper pair box as a transmon. The qubit states consist of the superpositions of two degenerate states where the charge and phase degrees of freedom are entangled. Owing to the robustness of the transmon against external fluctuations, our readout scheme enables the quantum non-demolition and single-shot measurement of flux qubit states. The qubit state readout can be performed by using the nonlinear Josephson amplifiers after a π/2 rotation driven by an ac electric field.
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Affiliation(s)
- Mun Dae Kim
- Institute of Physics and Applied Physics, Yonsei University, Seoul, Korea.
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Shin H, Kim D, Park J, Moon K, Jung H. MP-05.20 The Influences of Intravesical Prostatic Protrusion on Changes of Voiding and Storage Symptoms after Bipolar Transurethral Resection of the Prostate in Patients with Benign Prostatic Hyperplasia. Urology 2011. [DOI: 10.1016/j.urology.2011.07.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kim T, Sung G, Cho W, Park S, Lee S, Ham W, Kim D, Seong Y, Moon K, Shim B. MP-14.06 Techniques for Early Recovery of Continence in Patients with Robotic-Assisted Radical Prostatectomy. Urology 2011. [DOI: 10.1016/j.urology.2011.07.328] [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: 11/24/2022]
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Kim T, Cho W, Kim D, Seong Y, Park S, Ham W, Lee S, Moon K, Shim B. MP-14.05 Prospective Comparison of En Bloc Hilar Ligation to Conventional Ligation During Laparoscopic Radical Nephrectomy for Early Renal Cell Carcinoma. Urology 2011. [DOI: 10.1016/j.urology.2011.07.327] [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: 10/16/2022]
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Yoon J, Cho W, Kim T, Moon K. MP-06.15: Changes in overactive bladder symptoms after mid-urethral sling surgery in patients with stress urinary incontinence plus overactive bladder symptoms: long-term results. Urology 2010. [DOI: 10.1016/j.urology.2010.07.448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kang M, Kong S, Cho H, Moon K, Park Y, Kim N, Park S. 6564 Association of CYP2A6*4 with the efficacy of S-1 plus cisplatin in metastatic gastric cancer patients. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71285-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Bae Y, Jang M, Kim T, Moon K, Park C, Lee J, Lee K, Moon H, Zhu Z, Cho Y. Tyrosine Phosphatase SHP-1 in Oxidative Stress Involves in Mucin production from human bronchial epithelial cells. J Allergy Clin Immunol 2009. [DOI: 10.1016/j.jaci.2008.12.1000] [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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Kim H, Song P, Hyun C, Moon K, Jung H, Park T. MP-2.18: Detection Rate of Malignancy in Patients with Lower Urinary Tract Symptoms Without Pyuria. Urology 2008. [DOI: 10.1016/j.urology.2008.08.186] [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: 10/21/2022]
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McKee MD, Veillette CJH, Hall JA, Schemitsch EH, Wild LM, McCormack R, Perey B, Goetz T, Zomar M, Moon K, Mandel S, Petit S, Guy P, Leung I. A multicenter, prospective, randomized, controlled trial of open reduction--internal fixation versus total elbow arthroplasty for displaced intra-articular distal humeral fractures in elderly patients. J Shoulder Elbow Surg 2008; 18:3-12. [PMID: 18823799 DOI: 10.1016/j.jse.2008.06.005] [Citation(s) in RCA: 238] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Revised: 05/14/2008] [Accepted: 06/12/2008] [Indexed: 02/01/2023]
Abstract
We conducted a prospective, randomized, controlled trial to compare functional outcomes, complications, and reoperation rates in elderly patients with displaced intra-articular, distal humeral fractures treated with open reduction-internal fixation (ORIF) or primary semiconstrained total elbow arthroplasty (TEA). Forty-two patients were randomized by sealed envelope. Inclusion criteria were age greater than 65 years; displaced, comminuted, intra-articular fractures of the distal humerus (Orthopaedic Trauma Association type 13C); and closed or Gustilo grade I open fractures treated within 12 hours of injury. Both ORIF and TEA were performed following a standardized protocol. The Mayo Elbow Performance Score (MEPS) and Disabilities of the Arm, Shoulder and Hand (DASH) score were determined at 6 weeks, 3 months, 6 months, 12 months, and 2 years. Complication type, duration, management, and treatment requiring reoperation were recorded. An intention-to-treat analysis and an on-treatment analysis were conducted to address patients randomized to ORIF but converted to TEA intraoperatively. Twenty-one patients were randomized to each treatment group. Two died before follow-up and were excluded from the study. Five patients randomized to ORIF were converted to TEA intraoperatively because of extensive comminution and inability to obtain fixation stable enough to allow early range of motion. This resulted in 15 patients (3 men and 12 women) with a mean age of 77 years in the ORIF group and 25 patients (2 men and 23 women) with a mean age of 78 years in the TEA group. Baseline demographics for mechanism, classification, comorbidities, fracture type, activity level, and ipsilateral injuries were similar between the 2 groups. Operative time averaged 32 minutes less in the TEA group (P = .001). Patients who underwent TEA had significantly better MEPSs at 3 months (83 vs 65, P = .01), 6 months (86 vs 68, P = .003), 12 months (88 vs 72, P = .007), and 2 years (86 vs 73, P = .015) compared with the ORIF group. Patients who underwent TEA had significantly better DASH scores at 6 weeks (43 vs 77, P = .02) and 6 months (31 vs 50, P = .01) but not at 12 months (32 vs 47, P = .1) or 2 years (34 vs 38, P = .6). The mean flexion-extension arc was 107 degrees (range, 42 degrees -145 degrees) in the TEA group and 95 degrees (range, 30 degrees -140 degrees) in the ORIF group (P = .19). Reoperation rates for TEA (3/25 [12%]) and ORIF (4/15 [27%]) were not statistically different (P = .2). TEA for the treatment of comminuted intra-articular distal humeral fractures resulted in more predictable and improved 2-year functional outcomes compared with ORIF, based on the MEPS. DASH scores were better in the TEA group in the short term but were not statistically different at 2 years' follow-up. TEA may result in decreased reoperation rates, considering that 25% of fractures randomized to ORIF were not amenable to internal fixation. TEA is a preferred alternative for ORIF in elderly patients with complex distal humeral fractures that are not amenable to stable fixation. Elderly patients have an increased baseline DASH score and appear to accommodate to objective limitations in function with time.
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Affiliation(s)
- Michael D McKee
- Division of Orthopaedics, St Michael's Hospital and University of Toronto, Toronto, Ontario, Canada.
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Cho MH, Kim CY, Moon K, Chung KB, Yim CJ, Ko DH, Sohn HC, Jeon H. Change in the interfacial reaction of Hf-silicate film as a function of thickness and stoichiometry. J Chem Phys 2008; 129:034705. [PMID: 18647036 DOI: 10.1063/1.2955461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Medium energy ion scattering and high-resolution transmission electron microscopy are used to investigate the depth of the interfacial reaction of Hf-silicate film. The interfacial reaction is critically affected by the film thickness and the mole fraction of HfO(2) in silicate film. The interfacial compressive strain generated at the surface of the Si substrate is dependent on the film thickness during the postannealing process in film with a thickness of approximately 4 nm. Finally, the phase separation phenomenon demonstrates critically different behaviors at different film thicknesses and stoichiometries because the diffusion of Si from interface to surface is dependent on these factors. Moreover, the oxidation by oxygen impurity in the inert ambient causes SiO(2) top formation.
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Affiliation(s)
- M-H Cho
- Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, South Korea.
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Cho M, Kim J, Park H, Han Y, Moon K, Jung E, Han H. Highly birefringent terahertz polarization maintaining plastic photonic crystal fibers. Opt Express 2008; 16:7-12. [PMID: 18521127 DOI: 10.1364/oe.16.000007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Guided-wave propagation of sub-ps terahertz (THz) pulses in a highly birefringent plastic photonic crystal fiber was studied by using a THz time domain spectroscopy technique. The plastic photonic crystal fiber was fabricated by using high density polyethylene tubes and solid filaments. The fabricated THz plastic photonic crystal fibers exhibit an extremely large birefringence of ~ 2.1 x 10(-2), which is almost one order of magnitude larger than that of previously reported photonic crystal fibers.
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Affiliation(s)
- M Cho
- National Research Laboratory for Nano-THz Photonics, Department of Electrical and Computer Engineering, Pohang University of Science and Technology, San 31, Hoyja-dong, Nam-gu, Pohang, Kyungbuk 790-784, Korea
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Ahn C, Kim K, Moon K, Jeong K, Kim H, Lee J, Hwang C, Sun K. Development of Eddy Current Sensor systems in artificial heart for noncontact gap sensing. Conf Proc IEEE Eng Med Biol Soc 2007; 2005:3913-5. [PMID: 17281087 DOI: 10.1109/iembs.2005.1615317] [Citation(s) in RCA: 2] [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: 11/06/2022]
Abstract
The axial flow pump has been developed in Korea Artificial Organ Center. It consists of an impeller, a motor and a magnetic bearing. The magnetic bearing fully levitates the impeller not to contact with other parts of pump. However, in order to control the gap between the impeller and other parts, continuous gap sensing is necessary. The conventional gap sensors are relatively large to implant in artificial heart. Thus, the compact eddy current sensor system proper for artificial heart was developed and the performances were evaluated. It showed good results and has small size. However, the dependency of the sensor upon temperature and target material was shown also. Moreover, the output of sensor had nonlinear responses. These must be calibrated in further study.
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Affiliation(s)
- C Ahn
- Biomedical Engineering of Brain Korea 21 Program, Korea University,; Korea Artificial Organ Center, Korea University
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Liu C, Moon K, Honda H, Kobayashi T. In situ regeneration of rice (Oryza sativa L.) callus immobilized in polyurethane foam. J Biosci Bioeng 2005; 91:76-80. [PMID: 16232950 DOI: 10.1263/jbb.91.76] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2000] [Accepted: 10/27/2000] [Indexed: 11/17/2022]
Abstract
An in situ regeneration system for rice calli comprised of a callus growth stage and two regeneration stages was developed. After the first stage of regeneration, the medium is changed and the calli are immobilized in polyurethane foam supports, in each of which 3-5 regenerated plantlets develop from the immobilized calli during the second stage. While no significant change in callus size was observed during the first stage of regeneration, in the second stage callus enlargement and shoot regeneration predominated. In the light of these findings, calli were immobilized in the second stage after medium exchange. The use of 10-mm support cubes with an average pore size of 3.6 mm resulted in the most efficient immobilization and in situ regeneration. Medium exchange after 15 d gave the largest number of support cubes with shoots. When rice calli were cultivated in support cubes placed in 60 ml second-stage medium in a 500-ml flask, the immobilization ratio was 83%, and 82% of the support cubes contained 3-5 regenerated plantlets after 25 d. The shoot lengths of the regenerated plantlets obtained from the in situ regeneration culture were longer than those from a suspension culture. When support cubes with 3-5 regenerated plantlets were transferred from the flask to 1 4 MS solid medium supplemented with 10 g/l sorbitol and 5 g/l sucrose, the regenerated plantlets developed quickly into plants with a length above 10 cm after 10 d.
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Affiliation(s)
- C Liu
- Department of Biotechnology, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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Abstract
We study theoretically the parametric down-conversion and squeezing of microwaves using cavity quantum electrodynamics of a superconducting Cooper-pair box (CPB) qubit located inside a transmission line resonator. The nonlinear susceptibility chi2 describing three-wave mixing can be tuned by dc gate voltage applied to the CPB and vanishes by symmetry at the charge degeneracy point. We show that the coherent coupling of different cavity modes through the qubit can generate a squeezed state. Based on parameters realized in recent successful circuit QED experiments, squeezing of 95% approximately 13 dB below the vacuum noise level should be readily achievable.
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Affiliation(s)
- K Moon
- Sloane Physics Laboratory, PO Box 208120, Yale University, New Haven, Connecticut 06520-8120, USA
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Shen J, Rio D, Momenan R, Knutson B, Rawlings B, Moon K, Woltz L, Hommer D. Differential brain activation response to different frequency of electroacupuncture. Neuroimage 2001. [DOI: 10.1016/s1053-8119(01)92279-7] [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: 10/26/2022] Open
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Liu C, Moon K, Honda H, Kobayashi T. Enhanced regeneration of rice (Oryza sativa L.) embryogenic callus by light irradiation in growth phase. J Biosci Bioeng 2001; 91:319-21. [PMID: 16232998 DOI: 10.1263/jbb.91.319] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2000] [Accepted: 12/15/2000] [Indexed: 05/04/2023]
Abstract
The effect of light irradiation on the growth and regeneration of embryogenic rice calli was investigated. Rice calli grew slightly better in the light than in the dark during the growth stage. When calli subcultured under light irradiation were transferred into a liquid regeneration culture system, the number of plantlets with shoots regenerated from calli subcultured in the light was higher than in the case of those subcultured in the dark, whereas there was no obvious difference between the light and dark subcultures when a solid medium was used for the regeneration. The number of regenerated plantlets increased with increasing light intensity up to 2000 lx, but remained the same when the light intensity was raised further. The maximum number of regenerated plantlets was obtained under a photoperiod of 16 h/d. About 8800 plantlets per liter-medium were regenerated from light-cultured calli, which is 1.5 times more than the number regenerated from calli grown in the conventional dark culture.
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Affiliation(s)
- C Liu
- Department of Biotechnology, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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Chun YK, Kim J, Kwon S, Choi SH, Hong F, Moon K, Kim JM, Choi SL, Kim BS, Ha J, Kim SS. Phosphatidylinositol 3-kinase stimulates muscle differentiation by activating p38 mitogen-activated protein kinase. Biochem Biophys Res Commun 2000; 276:502-7. [PMID: 11027504 DOI: 10.1006/bbrc.2000.3486] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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
The activation of both phosphatidylinositol 3-kinase (PI3-kinase) and p38 mitogen-activated protein kinase (p38 MAPK) is required for muscle differentiation. However, it is not known whether the signals from these two kinases interact during this process. In this work, we have investigated this using H9c2 cardiac myoblasts. The p38 MAPK-specific inhibitor SB203580 blocked muscle differentiation and suppressed the expression of myogenin and myosin heavy chain in a concentration-dependent manner. Consistent with this, expression of a wild-type p38 MAPK (Ha-p38) or a constitutively active MAPK kinase 6 (MKK6(glu)) promoted the rate of differentiation into multinucleated myotubes. LY294002, a PI3-kinase inhibitor, suppressed in a dose-dependent manner not only muscle differentiation but also activation of p38 MAPK. In addition, expression of a constitutively active form of PI3-kinase (p110*) enhanced myotube formation and p38 MAPK activation, while expression of a dominant negative form of PI3-kinase (Deltap85) attenuated these responses. Furthermore, SB203580 suppressed differentiation of H9c2 cells expressing p110*. Interestingly, LY294002 also suppressed differentiation of H9c2 cells expressing Ha-p38 or MKK6(glu). However, SB203580 did not affect PI3-kinase activity, suggesting that PI3-kinase myogenic signaling to p38 MAPK is unidirectional. Taken together, we concluded that PI3-kinase activates p38 MAPK, which in turn stimulates muscle differentiation, but that p38 MAPK does not substitute for PI3-kinase in this process.
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Affiliation(s)
- Y K Chun
- Department of Molecular Biology, School of Medicine, Seoul, 130-701, Korea
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Brenner S, Johnson M, Bridgham J, Golda G, Lloyd DH, Johnson D, Luo S, McCurdy S, Foy M, Ewan M, Roth R, George D, Eletr S, Albrecht G, Vermaas E, Williams SR, Moon K, Burcham T, Pallas M, DuBridge RB, Kirchner J, Fearon K, Mao J, Corcoran K. Gene expression analysis by massively parallel signature sequencing (MPSS) on microbead arrays. Nat Biotechnol 2000; 18:630-4. [PMID: 10835600 DOI: 10.1038/76469] [Citation(s) in RCA: 1017] [Impact Index Per Article: 42.4] [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: 11/10/2022]
Abstract
We describe a novel sequencing approach that combines non-gel-based signature sequencing with in vitro cloning of millions of templates on separate 5 microm diameter microbeads. After constructing a microbead library of DNA templates by in vitro cloning, we assembled a planar array of a million template-containing microbeads in a flow cell at a density greater than 3x10(6) microbeads/cm2. Sequences of the free ends of the cloned templates on each microbead were then simultaneously analyzed using a fluorescence-based signature sequencing method that does not require DNA fragment separation. Signature sequences of 16-20 bases were obtained by repeated cycles of enzymatic cleavage with a type IIs restriction endonuclease, adaptor ligation, and sequence interrogation by encoded hybridization probes. The approach was validated by sequencing over 269,000 signatures from two cDNA libraries constructed from a fully sequenced strain of Saccharomyces cerevisiae, and by measuring gene expression levels in the human cell line THP-1. The approach provides an unprecedented depth of analysis permitting application of powerful statistical techniques for discovery of functional relationships among genes, whether known or unknown beforehand, or whether expressed at high or very low levels.
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Affiliation(s)
- S Brenner
- Lynx Therapeutics, Inc., 25861 Industrial Blvd., Hayward, California 94545, USA
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Brenner S, Williams SR, Vermaas EH, Storck T, Moon K, McCollum C, Mao JI, Luo S, Kirchner JJ, Eletr S, DuBridge RB, Burcham T, Albrecht G. In vitro cloning of complex mixtures of DNA on microbeads: physical separation of differentially expressed cDNAs. Proc Natl Acad Sci U S A 2000; 97:1665-70. [PMID: 10677516 PMCID: PMC26493 DOI: 10.1073/pnas.97.4.1665] [Citation(s) in RCA: 182] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/1999] [Indexed: 11/18/2022] Open
Abstract
We describe a method for cloning nucleic acid molecules onto the surfaces of 5-micrometer microbeads rather than in biological hosts. A unique tag sequence is attached to each molecule, and the tagged library is amplified. Unique tagging of the molecules is achieved by sampling a small fraction (1%) of a very large repertoire of tag sequences. The resulting library is hybridized to microbeads that each carry approximately 10(6) strands complementary to one of the tags. About 10(5) copies of each molecule are collected on each microbead. Because such clones are segregated on microbeads, they can be operated on simultaneously and then assayed separately. To demonstrate the utility of this approach, we show how to label and extract microbeads bearing clones differentially expressed between two libraries by using a fluorescence-activated cell sorter (FACS). Because no prior information about the cloned molecules is required, this process is obviously useful where sequence databases are incomplete or nonexistent. More importantly, the process also permits the isolation of clones that are expressed only in given tissues or that are differentially expressed between normal and diseased states. Such clones then may be spotted on much more cost-effective, tissue- or disease-directed, low-density planar microarrays.
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Affiliation(s)
- S Brenner
- Lynx Therapeutics, Inc., 25861 Industrial Boulevard, Hayward, CA 94545, USA
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Moon K, Mullen K. Thermodynamic phase diagram of the quantum hall skyrmion system. Phys Rev Lett 2000; 84:975-978. [PMID: 11017419 DOI: 10.1103/physrevlett.84.975] [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: 08/23/1999] [Indexed: 05/23/2023]
Abstract
We numerically study the interacting quantum Hall Skyrmion system based on the Chern-Simons action. By noticing that the action is invariant under global spin rotations in the spin space with respect to the magnetic field direction, we obtain the low-energy effective action for a many-Skyrmion system. Performing extensive molecular dynamics simulations, we establish the thermodynamic phase diagram for a many-Skyrmion system.
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Affiliation(s)
- K Moon
- Department of Physics, Yonsei University, Seoul 120-749, Korea
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Abplanalp W, Scheiber MD, Moon K, Kessel B, Liu JH, Subbiah MT. Evidence for the role of high density lipoproteins in mediating the antioxidant effect of estrogens. Eur J Endocrinol 2000; 142:79-83. [PMID: 10633226 DOI: 10.1530/eje.0.1420079] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Estrogens possess strong antioxidant effects in vitro, but in vivo studies in humans have yielded conflicting results. Little is known regarding factors that mediate the antioxidant effect of estrogens in vivo. In this study the potential role of high density lipoprotein (HDL) was examined. The antioxidant effect of estradiol-17beta (E2) added to low density lipoprotein (LDL) was lost after dialysis. In contrast, the antioxidant effect of E2 added to HDL was conserved after dialysis, suggesting that E2 was bound to HDL. Binding of E2 to LDL increased after esterification (especially to long chain fatty acids). In the presence of HDL, an increased amount of E2 was transferred to LDL. E2-17 ester was as potent as E2 in preventing LDL oxidation in vitro, but 3,17-diesters were not as effective (E2=E2-17 ester>E2-3 ester>E2-3,17 diester). This was also supported by experiments which showed that estrogens with masked 3-OH groups were not effective as antioxidants. These studies provide evidence that HDL could facilitate the antioxidant effect of E2 through initial association, esterification and eventual transfer of E2 esters to LDL. Therefore it is critical that HDL peroxidation parameters be evaluated in subjects receiving estrogen replacement therapy.
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Affiliation(s)
- W Abplanalp
- Departments of Internal Medicine and Obstetrics and Gynecology, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
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