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Park S, Bae S, Kim EO, Chang E, Kim MJ, Chong YP, Choi SH, Lee SO, Kim YS, Jung J, Kim SH. The impact of discontinuing single-room isolation of patients with vancomycin-resistant enterococci: a quasi-experimental single-centre study in South Korea. J Hosp Infect 2024; 147:77-82. [PMID: 38492645 DOI: 10.1016/j.jhin.2024.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/18/2024]
Abstract
OBJECTIVES There is limited data on the effects of discontinuing single-room isolation while maintaining contact precautions, such as the use of gowns and gloves. In April 2021, our hospital ceased single-room isolation for patients with vancomycin-resistant enterococci (VRE) because of single-room unavailability. This study assessed the impact of this policy by examining the incidence of hospital-acquired VRE bloodstream infections (HA-VRE BSI). METHODS This retrospective quasi-experimental study was conducted at a tertiary-care hospital in Seoul, South Korea. Time-series analysis was used to evaluate HA-VRE BSI incidence at the hospital level and in the haematology unit before (phase 1) and after (phase 2) the policy change. RESULTS At the hospital level, HA-VRE BSI incidence level (VRE BSI per 1000 patient-days per month) and trend did not change significantly between phase 1 and phase 2 (coefficient -0.015, 95% confidence interval (CI): -0.053 to 0.023, P=0.45 and 0.000, 95% CI: -0.002 to 0.002, P=0.84, respectively). Similarly, HA-VRE BSI incidence level and trend in the haematology unit (-0.285, 95% CI: -0.618 to 0.048, P=0.09 and -0.018, 95% CI: -0.036 to 0.000, P = 0.054, respectively) did not change significantly across the two phases. CONCLUSIONS Discontinuing single-room isolation of VRE-colonized or infected patients was not associated with an increase in the incidence of VRE BSI at the hospital level or among high-risk patients in the haematology unit. Horizontal intervention for multi-drug-resistant organisms, including measures such as enhanced hand hygiene and environmental cleaning, may be more effective at preventing VRE transmission.
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Affiliation(s)
- S Park
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea
| | - S Bae
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - E O Kim
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea
| | - E Chang
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M J Kim
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y P Chong
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-H Choi
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-O Lee
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J Jung
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea; Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - S-H Kim
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea; Department of Infectious Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Park S, Ortega AN, Chen J, Mortensen K, Bustamante AV. Association of food insecurity with health, access to care, affordability of care, financial burden of care, and financial hardships among US adults during the COVID-19 pandemic. Public Health 2024; 230:183-189. [PMID: 38565064 DOI: 10.1016/j.puhe.2024.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/15/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVES To examine the associations between food insecurity and health, access to care, affordability of care, financial burden of care, and financial hardships among US adults during the COVID-19 pandemic and examine whether the associations were less pronounced among adults with safety nets. STUDY DESIGN We conducted a retrospective longitudinal cohort study using the 2020-2021 Medical Expenditure Panel Survey. METHODS Linear probability models were used to assess the associations between food insecurity in one year and the outcomes of interest in the following year while adjusting for baseline characteristics. We performed the analyses for the entire population and then conducted stratified analyses for adults with and without Supplemental Nutrition Assistance Program (SNAP) benefits or Medicaid coverage. RESULTS Compared with food-secure adults, food-insecure adults were 9.1 percentage points less likely to report life satisfaction and 9.9, 10.2, and 13.2 percentage points more likely to experience delays in getting medical care, postpone or forgo medical care because of cost, and struggle with paying medical bills. Food-insecure adults were 30.4, 27.2, and 23.5 percentage points more likely to face challenges in affording necessities, paying utility bills, and meeting rent or mortgage payments on time than food-secure adults. Notably, the strengths of these associations were attenuated among adults with SNAP benefits or Medicaid coverage. CONCLUSIONS Food insecurity was associated with poor health, limited access to and affordability of care, and a greater financial burden of care among US adults during the pandemic. Nevertheless, safety net programs can play a critical role in alleviating adverse consequences.
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Affiliation(s)
- S Park
- Department of Health Policy and Management, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea; Department of Healthcare Sciences, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea; L-HOPE Program for Community-Based Total Learning Health Systems, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - A N Ortega
- Thompson School of Social Work and Public Health, University of Hawai'i at Manoa, 2430 Campus Rd, Honolulu, HI, 96822, USA.
| | - J Chen
- Department of Health Policy and Management, School of Public Health, University of Maryland, 4200 Valley Dr, College Park, MD, 20742, USA.
| | - K Mortensen
- Department of Health Management and Policy, Hebert Business School, University of Miami, 5250 University Dr, Coral Gables, FL 33146, USA.
| | - A V Bustamante
- Department of Health Policy and Management, Fielding School of Public Health, UCLA, UCLA Latino Policy and Politics Institute, 650 Charles Young Dr. S., Los Angeles, CA, 90095, USA.
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Park S, Hwang CJ, Lee DH, Kim NY, Nam HW, Kang HW, Lee CS, Ok CH, Cho JH. Risk factors of revision operation and early revision for adjacent segment degeneration after lumbar fusion surgery: a case-control study. Spine J 2024:S1529-9430(24)00183-9. [PMID: 38663482 DOI: 10.1016/j.spinee.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 04/19/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024]
Abstract
BACKGROUND CONTEXT Adjacent segment degeneration (ASD) following lumbar fusion operation is common and can occur at varying timepoints after index surgery. An early revision operation for ASD, however, signifies a short symptom-free period and might increase the risk of successive surgeries. PURPOSE We aimed to elucidate the overall risk factors associated with revision surgeries for ASD with distinct attention to early revisions. STUDY DESIGN/SETTING Retrospective, case-control study. PATIENT SAMPLE The study included 86 patients who underwent revision operations for ASD after lumbar fusion in the revision group and 166 patients who did not for at least 5 years after index surgery. OUTCOME MEASURES Sagittal parameters, Pfirrmann grading, facet degeneration grading, and disc space height (DSH) of adjacent segments were assessed. METHODS Revision operations within 5 years postsurgery were defined as early revision. We compared the revision and no-revision groups as well as the early- and late-revision groups. RESULTS The revision group demonstrated a significantly greater preoperative C7-S1 sagittal vertical axis (SVA) (p=.001), postoperative C7-S1 SVA (p<.001), and postoperative pelvic incidence (PI)-lumbar lordosis (LL) (p<.001) than those in the no-revision group. Preoperative DSH of the proximal adjunct segment (p=.001), postoperative PI-LL (p=.014), and postoperative C7-S1 SVA (p=.037) exhibited significant association with ASD in logistic regression analysis. The early-revision group had a significantly higher patient age (p=.001) and a greater number of levels fused (p=.030) than those in the late-revision group. Multivariate Cox regression analysis demonstrated that old age (p=.045), a significant number of levels fused (p=.047), and a narrow preoperative DSH of the proximal adjacent level (p=.011) were risk factors for early revision. CONCLUSIONS Postoperative sagittal imbalance, including significant PI-LL and C7-S1 SVA were risk factors for revision operation for ASD but not for early revision. These factors are likely to affect the long-term risk of revision operation due to ASD and thus are not considered risk factors for early revision. Narrow DSH of the proximal adjacent level increased the risks of both revision and early revision surgeries. Moreover, old age and a significant number of levels fused further increased the risk for early revision for ASD.
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Affiliation(s)
- Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea
| | - Nam Yeop Kim
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea
| | - Hyun Wook Nam
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea
| | - Hyun Wook Kang
- Department of Spine Surgery, St.Peter's Hospital, 2649, Nambusunhwan-ro, Gangnam-gu, Seoul, Republic of Korea
| | - Choon Sung Lee
- Department of Spine Surgery, St.Peter's Hospital, 2649, Nambusunhwan-ro, Gangnam-gu, Seoul, Republic of Korea
| | - Cha Hyeong Ok
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Pungnap-2-dong, Seoul, Republic of Korea.
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Santiesteban SN, Li S, Abrams D, Alsalmi S, Androic D, Aniol K, Arrington J, Averett T, Ayerbe Gayoso C, Bane J, Barcus S, Barrow J, Beck A, Bellini V, Bhatt H, Bhetuwal D, Biswas D, Camsonne A, Castellanos J, Chen J, Chen JP, Chrisman D, Christy ME, Clarke C, Covrig S, Cruz-Torres R, Day D, Dutta D, Fuchey E, Gal C, Garibaldi F, Gautam TN, Gogami T, Gomez J, Guèye P, Hague TJ, Hansen JO, Hauenstein F, Henry W, Higinbotham DW, Holt RJ, Hyde C, Itabashi K, Kaneta M, Karki A, Katramatou AT, Keppel CE, King PM, Kurbany L, Kutz T, Lashley-Colthirst N, Li WB, Liu H, Liyanage N, Long E, Lovato A, Mammei J, Markowitz P, McClellan RE, Meddi F, Meekins D, Michaels R, Mihovilovič M, Moyer A, Nagao S, Nguyen D, Nycz M, Olson M, Ou L, Owen V, Palatchi C, Pandey B, Papadopoulou A, Park S, Petkovic T, Premathilake S, Punjabi V, Ransome RD, Reimer PE, Reinhold J, Riordan S, Rocco N, Rodriguez VM, Schmidt A, Schmookler B, Segarra EP, Shahinyan A, Širca S, Slifer K, Solvignon P, Su T, Suleiman R, Tang L, Tian Y, Tireman W, Tortorici F, Toyama Y, Uehara K, Urciuoli GM, Votaw D, Williamson J, Wojtsekhowski B, Wood S, Ye ZH, Zhang J, Zheng X. Novel Measurement of the Neutron Magnetic Form Factor from A=3 Mirror Nuclei. Phys Rev Lett 2024; 132:162501. [PMID: 38701469 DOI: 10.1103/physrevlett.132.162501] [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: 04/28/2023] [Revised: 10/05/2023] [Accepted: 02/21/2024] [Indexed: 05/05/2024]
Abstract
The electromagnetic form factors of the proton and neutron encode information on the spatial structure of their charge and magnetization distributions. While measurements of the proton are relatively straightforward, the lack of a free neutron target makes measurements of the neutron's electromagnetic structure more challenging and more sensitive to experimental or model-dependent uncertainties. Various experiments have attempted to extract the neutron form factors from scattering from the neutron in deuterium, with different techniques providing different, and sometimes large, systematic uncertainties. We present results from a novel measurement of the neutron magnetic form factor using quasielastic scattering from the mirror nuclei ^{3}H and ^{3}He, where the nuclear effects are larger than for deuterium but expected to largely cancel in the cross-section ratios. We extracted values of the neutron magnetic form factor for low-to-modest momentum transfer, 0.6
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Affiliation(s)
| | - S Li
- University of New Hampshire, Durham, New Hampshire 03824, USA
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - D Abrams
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - S Alsalmi
- Kent State University, Kent, Ohio 44240, USA
- King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
| | - D Androic
- University of Zagreb, Zagreb, Croatia
| | - K Aniol
- California State University, Los Angeles, California 90032, USA
| | - J Arrington
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - T Averett
- William and Mary, Williamsburg, Virginia 23185, USA
| | | | - J Bane
- University of Tennessee, Knoxville, Tennessee 37966, USA
| | - S Barcus
- William and Mary, Williamsburg, Virginia 23185, USA
| | - J Barrow
- University of Tennessee, Knoxville, Tennessee 37966, USA
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - A Beck
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | - H Bhatt
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - D Bhetuwal
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - D Biswas
- Hampton University, Hampton, Virginia 23669, USA
| | - A Camsonne
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J Castellanos
- Florida International University, Miami, Florida 33199, USA
| | - J Chen
- William and Mary, Williamsburg, Virginia 23185, USA
| | - J-P Chen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D Chrisman
- Michigan State University, East Lansing, Michigan 48824, USA
| | - M E Christy
- Hampton University, Hampton, Virginia 23669, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Clarke
- Stony Brook, State University of New York, New York 11794, USA
| | - S Covrig
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Cruz-Torres
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - D Day
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - D Dutta
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - E Fuchey
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - C Gal
- University of Virginia, Charlottesville, Virginia 22904, USA
| | | | - T N Gautam
- Hampton University, Hampton, Virginia 23669, USA
| | - T Gogami
- Tohoku University, Sendai, Japan
| | - J Gomez
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Guèye
- Hampton University, Hampton, Virginia 23669, USA
- Michigan State University, East Lansing, Michigan 48824, USA
| | - T J Hague
- Kent State University, Kent, Ohio 44240, USA
| | - J O Hansen
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - F Hauenstein
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - W Henry
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - D W Higinbotham
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R J Holt
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - C Hyde
- Old Dominion University, Norfolk, Virginia 23529, USA
| | | | - M Kaneta
- Tohoku University, Sendai, Japan
| | - A Karki
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | | | - C E Keppel
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P M King
- Ohio University, Athens, Ohio 45701, USA
| | - L Kurbany
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - T Kutz
- Stony Brook, State University of New York, New York 11794, USA
| | | | - W B Li
- William and Mary, Williamsburg, Virginia 23185, USA
| | - H Liu
- Columbia University, New York, New York 10027, USA
| | - N Liyanage
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - E Long
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - A Lovato
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Computational Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- INFN-TIFPA Trento Institute for Fundamental Physics and Applications, 38123 Trento, Italy
| | - J Mammei
- University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - P Markowitz
- Florida International University, Miami, Florida 33199, USA
| | - R E McClellan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - D Meekins
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Michaels
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Mihovilovič
- Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
- Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, DE-55128 Mainz, Germany
| | - A Moyer
- Christopher Newport University, Newport News, Virginia 23606, USA
| | - S Nagao
- Tohoku University, Sendai, Japan
| | - D Nguyen
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - M Nycz
- Kent State University, Kent, Ohio 44240, USA
| | - M Olson
- Saint Norbert College, De Pere, Wisconsin 54115, USA
| | - L Ou
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - V Owen
- William and Mary, Williamsburg, Virginia 23185, USA
| | - C Palatchi
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - B Pandey
- Hampton University, Hampton, Virginia 23669, USA
| | - A Papadopoulou
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S Park
- Stony Brook, State University of New York, New York 11794, USA
| | | | - S Premathilake
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - V Punjabi
- Norfolk State University, Norfolk, Virginia 23529, USA
| | - R D Ransome
- Rutgers University, New Brunswick, New Jersey 08854, USA
| | - P E Reimer
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - J Reinhold
- Florida International University, Miami, Florida 33199, USA
| | - S Riordan
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - N Rocco
- Theoretical Physics Department, Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - V M Rodriguez
- División de Ciencias y Tecnología, Universidad Ana G. Méndez, Recinto de Cupey, San Juan 00926, Puerto Rico
| | - A Schmidt
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - B Schmookler
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - E P Segarra
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | | | - S Širca
- Jožef Stefan Institute, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - K Slifer
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - P Solvignon
- University of New Hampshire, Durham, New Hampshire 03824, USA
| | - T Su
- Kent State University, Kent, Ohio 44240, USA
| | - R Suleiman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L Tang
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Y Tian
- Syracuse University, Syracuse, New York 13244, USA
| | - W Tireman
- Northern Michigan University, Marquette, Michigan 49855, USA
| | | | - Y Toyama
- Tohoku University, Sendai, Japan
| | - K Uehara
- Tohoku University, Sendai, Japan
| | | | - D Votaw
- Michigan State University, East Lansing, Michigan 48824, USA
| | - J Williamson
- University of Glasgow, Glasgow, G12 8QQ Scotland, United Kingdom
| | - B Wojtsekhowski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S Wood
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Z H Ye
- Argonne National Laboratory, Lemont, Illinois 60439, USA
- Tsinghua University, Beijing, China
| | - J Zhang
- University of Virginia, Charlottesville, Virginia 22904, USA
| | - X Zheng
- University of Virginia, Charlottesville, Virginia 22904, USA
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Yang JJ, Choi JY, Lee DH, Hwang CJ, Cho JH, Park S. Reoperation Rates According to Surgical Approach After Operation for Degenerative Cervical Pathology in Patients With Athetoid Cerebral Palsy: A Nationwide Cohort Study. Global Spine J 2024:21925682241247486. [PMID: 38631333 DOI: 10.1177/21925682241247486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
Abstract
STUDY DESIGN National population-based cohort study. OBJECTIVE The overall complication rate for patients with athetoid cerebral palsy (CP) undergoing cervical surgery is significantly higher than that of patients without CP. The study was conducted to compare the reoperation and complication rates of anterior fusion, posterior fusion, combined fusion, and laminoplasty for degenerative cervical myelopathy/radiculopathy in patients with athetoid cerebral palsy. METHODS The Korean Health Insurance Review and Assessment Service national database was used for analysis. Data from patients diagnosed with athetoid CP who underwent cervical spine operations for degenerative causes between 2002 and 2020 were reviewed. Patients were categorized into four groups for comparison: anterior fusion, posterior fusion, combined fusion, and laminoplasty. RESULTS A total of 672 patients were included in the study. The overall revision rate was 21.0% (141/672). The revision rate was highest in the anterior fusion group (42.7%). The revision rates of combined fusion (11.1%; hazard ratio [HR], .335; P = .002), posterior fusion (13.8%; HR, .533; P = .030) were significantly lower than that of anterior fusion. Revision rate of laminoplasty (13.1%; HR, .541; P = .240) was also lower than anterior fusion although the result did not demonstrate statistical significance. CONCLUSION Anterior fusion presented the highest reoperation risk after cervical spine surgery reaching 42.7% in patients with athetoid CP. Therefore, anterior-only fusion in patients with athetoid CP should be avoided or reserved for strictly selected patients. Combined fusion, with the lowest revision risk at 11.1%, could be safely applied to patients with athetoid CP.
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Affiliation(s)
- Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Republic of Korea
| | - Jun Young Choi
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Republic of Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Cho JH, Lee DH, Hwang CJ, Park JW, Park JH, Park S. Does Preoperative Radiation Therapy Performed for Metastatic Spine Cancer at the Cervical Spine Increase Perioperative Complications of Anterior Cervical Surgery? Clin Orthop Surg 2024; 16:286-293. [PMID: 38562630 PMCID: PMC10973614 DOI: 10.4055/cios23322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/03/2023] [Accepted: 12/03/2023] [Indexed: 04/04/2024] Open
Abstract
Background Radiation therapy (RT) performed before anterior cervical spine surgery (ACSS) may cause fascial plane fibrosis, decreased soft-tissue vascularity, and vertebral body weakness, which could increase the risk of esophageal and major vessel injuries, wound complications, and construct subsidence. Therefore, this study aimed to evaluate whether preoperative RT performed for metastatic spine cancer (MSC) at the cervical spine increases perioperative morbidity for ACSS. Methods Forty-nine patients who underwent ACSS for treatment of MSC at the cervical spine were retrospectively reviewed. All the patients underwent anterior cervical corpectomy via the anterior approach. Patient demographics, surgical factors, operative factors, and complications were recorded. Results of patients who were initially treated with RT before ACSS (RT group) were compared with those who did not receive RT before ACSS (non-RT group). Results Eighteen patients (36.7%) were included in the RT group, while the remaining 31 (63.3%) were included in the non-RT group. Surgery-related factors, including operation time (p = 0.109), estimated blood loss (p = 0.246), amount of postoperative drainage (p = 0.604), number of levels operated (p = 0.207), and number of patients who underwent combined posterior fusion (p = 0.768), did not significantly differ between the 2 groups. Complication rates, including esophageal injury, dural tear, infection, wound dehiscence, and mechanical failure, did not significantly differ between the RT and non-RT groups. Early subsidence was significantly greater in the non-RT group compared to that in the RT group (p = 0.012). Conclusions RT performed before surgery for MSC does not increase the risk of wound complication, mechanical failure, or vital structure injury during ACSS. The surgical procedural approach was not complicated by previous RT history. Therefore, surgeons can safely choose the anterior approach when the number of levels or location of MSC favors anterior surgery, and performing a posterior surgery is unnecessary due to a concern that previous RT may increase complication rates of ACSS.
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Affiliation(s)
- Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Woo Park
- Department of Orthopedic Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Jin Hoon Park
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Park S, Goggin K, Morton JM, Hall DA. The effects of tibial tuberosity avulsion and repair on tibial plateau angle in dogs. N Z Vet J 2024; 72:90-95. [PMID: 38228160 DOI: 10.1080/00480169.2023.2291036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/15/2023] [Indexed: 01/18/2024]
Abstract
AIMS To assess whether tibial tuberosity avulsion injury and subsequent surgical repair in skeletally immature dogs are associated with changes in tibial plateau angle (TPA) at skeletal maturity. METHODS Skeletally mature (> 18 months of age) dogs that had previously undergone unilateral surgery when 4-8 months of age to repair tibial tuberosity avulsion were enrolled. Bilateral, mediolateral stifle radiographs were taken. TPA was measured digitally from the radiographs independently by two readers and compared between sides within dogs. As the number of dogs that would be enrolled for the main part of the study was unknown, to understand how the variation between left and right stifles within dogs would affect the power of the main study, 29 client-owned, skeletally mature dogs without stifle pathology were recruited prior to the main study for bilateral, mediolateral projection stifle radiographs. Variation in the differences in TPA between left and right stifles was used to estimate the likely power of the major part of the study for different numbers of enrolled dogs. RESULTS From 29 dogs enrolled in the power assessment, the SD of the differences between left and right stifles was 2.1°. With 10 dogs (20 stifles) enrolled within the main part of the study, and if the SD of the differences between operated and non-operated stifles within a dog was the same as the SD of the differences between non-operated stifles within a dog (2.1°), the study would have power ≥ 0.8 if the mean difference in TPA between operated and non-operated stifles was ≥ 2.1°.Ten dogs were enrolled in phase II of the study. In 8/10 of these dogs, the TPA in the operated stifle was less than in the non-operated stifle. The mean TPA on the operated stifle was 6.4° less than on the non-operated stifle (95% CI = 2.4-10.3° less; p = 0.002). For surgery between 4 and 8 months of age, TPA at maturity increased by 2.7° (95% CI = 1.1-4.3°; p = 0.001) for each additional month of age at surgery. CONCLUSIONS AND CLINICAL RELEVANCE Based on this study, surgical repair of tibial tuberosity avulsion in skeletally immature dogs is associated with a smaller TPA at skeletal maturity. However, causality cannot be established from this cross-sectional study, and this association may be because stifles with a smaller TPA are predisposed to tibial tuberosity avulsion.
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Affiliation(s)
- S Park
- Advanced Vetcare, Melbourne, Australia
| | - K Goggin
- Advanced Vetcare, Melbourne, Australia
| | - J M Morton
- Jemora Pty. Ltd., East Geelong, Australia
| | - D A Hall
- Advanced Vetcare, Melbourne, Australia
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Hull JA, Lee C, Kim JK, Lim SW, Park J, Park S, Lee SJ, Park G, Eom I, Kim M, Hyun H, Combs JE, Andring JT, Lomelino C, Kim CU, McKenna R. XFEL structure of carbonic anhydrase II: a comparative study of XFEL, NMR, X-ray and neutron structures. Acta Crystallogr D Struct Biol 2024; 80:194-202. [PMID: 38411550 PMCID: PMC10910541 DOI: 10.1107/s2059798324000482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/12/2024] [Indexed: 02/28/2024] Open
Abstract
The combination of X-ray free-electron lasers (XFELs) with serial femtosecond crystallography represents cutting-edge technology in structural biology, allowing the study of enzyme reactions and dynamics in real time through the generation of `molecular movies'. This technology combines short and precise high-energy X-ray exposure to a stream of protein microcrystals. Here, the XFEL structure of carbonic anhydrase II, a ubiquitous enzyme responsible for the interconversion of CO2 and bicarbonate, is reported, and is compared with previously reported NMR and synchrotron X-ray and neutron single-crystal structures.
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Affiliation(s)
- Joshua A. Hull
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Cheol Lee
- Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jin Kyun Kim
- Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Seon Woo Lim
- Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jaehyun Park
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
- Department of Chemical Engineering, POSTECH, Pohang 37673, Republic of Korea
| | - Sehan Park
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Sang Jae Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Gisu Park
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Intae Eom
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Minseok Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - HyoJung Hyun
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | - Jacob E. Combs
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Jacob T. Andring
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Carrie Lomelino
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Chae Un Kim
- Department of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Robert McKenna
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA
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Park S, Ceulemans E, Van Deun K. A critical assessment of sparse PCA (research): why (one should acknowledge that) weights are not loadings. Behav Res Methods 2024; 56:1413-1432. [PMID: 37540466 PMCID: PMC10991020 DOI: 10.3758/s13428-023-02099-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2023] [Indexed: 08/05/2023]
Abstract
Principal component analysis (PCA) is an important tool for analyzing large collections of variables. It functions both as a pre-processing tool to summarize many variables into components and as a method to reveal structure in data. Different coefficients play a central role in these two uses. One focuses on the weights when the goal is summarization, while one inspects the loadings if the goal is to reveal structure. It is well known that the solutions to the two approaches can be found by singular value decomposition; weights, loadings, and right singular vectors are mathematically equivalent. What is often overlooked, is that they are no longer equivalent in the setting of sparse PCA methods which induce zeros either in the weights or the loadings. The lack of awareness for this difference has led to questionable research practices in sparse PCA. First, in simulation studies data is generated mostly based only on structures with sparse singular vectors or sparse loadings, neglecting the structure with sparse weights. Second, reported results represent local optima as the iterative routines are often initiated with the right singular vectors. In this paper we critically re-assess sparse PCA methods by also including data generating schemes characterized by sparse weights and different initialization strategies. The results show that relying on commonly used data generating models can lead to over-optimistic conclusions. They also highlight the impact of choice between sparse weights versus sparse loadings methods and the initialization strategies. The practical consequences of this choice are illustrated with empirical datasets.
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Affiliation(s)
- S Park
- Tilburg University, Methods and Statistics, Tilburg, The Netherlands.
| | - E Ceulemans
- KU Leuven, Psychology and Educational Sciences, Leuven, Belgium
| | - K Van Deun
- Tilburg University, Methods and Statistics, Tilburg, The Netherlands
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Cho ST, Lee DH, Cho JH, Park S, Kim JH, Lee MY, Yoon SJ, Hwang CJ. Connecting the S2 alar-iliac screw head to the satellite rod for surgical correction of degenerative sagittal imbalance. Eur Spine J 2024:10.1007/s00586-023-08106-4. [PMID: 38195929 DOI: 10.1007/s00586-023-08106-4] [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] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 11/05/2023] [Accepted: 12/15/2023] [Indexed: 01/11/2024]
Abstract
PURPOSE The S2AI screw technique has several advantages over the conventional iliac screw fixation technique. However, connecting the S2AI screw head to the main rod is difficult due to its medial entry point. We introduce a new technique for connecting the S2AI screw head to a satellite rod and compare it with the conventional method of connecting the S2AI screw to the main rod. METHODS Seventy-four patients who underwent S2AI fixation for degenerative sagittal imbalance and were followed up for ≥ 2 years were included. All the patients underwent long fusion from T9 or T10 to the pelvis. The S2AI screw head was connected to the satellite rod (SS group) in 43 patients and the main rod (SM group) in 31 patients. In the SS group, the satellite rod was placed medial to the main rod and connected by the S2AI screw and domino connectors. In the SM group, the main rod was connected directly to the S2AI screw head and supported by accessory rods. Radiographic and clinical outcomes were evaluated in both groups. RESULTS There were no significant differences in postoperative complications, including proximal junctional failure, proximal junctional kyphosis, rod breakage, screw loosening, wound problems, and infection between the two groups. Furthermore, the correction power of sagittal deformity and clinical results in the SS group were comparable to those in the SM group. CONCLUSION Connecting the S2AI screw to the satellite rod is a convenient method comparable to the conventional S2AI connection method in terms of radiological and clinical outcomes.
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Affiliation(s)
- Sung Tan Cho
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, 170, Juhwa-ro, Ilsangeo-gu, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 43, Olymipic-ro, Songpa-gu, Seoul, Republic of Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 43, Olymipic-ro, Songpa-gu, Seoul, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 43, Olymipic-ro, Songpa-gu, Seoul, Republic of Korea
| | - Jin Hwan Kim
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, 170, Juhwa-ro, Ilsangeo-gu, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Mi Young Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 43, Olymipic-ro, Songpa-gu, Seoul, Republic of Korea
| | - So Jeong Yoon
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 43, Olymipic-ro, Songpa-gu, Seoul, Republic of Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, 43, Olymipic-ro, Songpa-gu, Seoul, Republic of Korea.
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Lee DH, Park S, Cho JH, Hwang CJ, Yang JJ, Lee CS. Risk Factors for Postoperative Loss of Lordosis, Cervical Kyphosis, and Sagittal Imbalance After Cervical Laminoplasty. World Neurosurg 2023; 180:e324-e333. [PMID: 37757942 DOI: 10.1016/j.wneu.2023.09.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023]
Abstract
OBJECTIVE A retrospective cohort study was undertaken to elucidate the risk factors of loss of cervical lordosis (LCL), kyphotic deformity, and sagittal imbalance after cervical laminoplasty. METHODS A total of 108 patients who underwent laminoplasty to treat cervical myelopathy and were followed for ≥2 years were included. Logistic regression analysis and multiple regression analysis were performed to identify preoperative risk factors of LCL, kyphotic deformity (cervical lordosis <0°), and sagittal imbalance (sagittal vertical axis >40 mm) at postoperative 2 years. RESULTS Within multivariate multiple regression analysis, C2-C7 lordosis (P = 0.002), and C2-C7 extension capacity (P<0.001) showed significant association with LCL. Furthermore, age (P = 0.043) and C2-C7 lordosis (P = 0.038) were significantly associated with postoperative kyphosis. Receiver operating characteristic curve analysis for postoperative kyphosis showed that preoperative C2-C7 lordosis of 10.5° had a sensitivity and specificity of 81.3% and 82.4%, respectively. Preoperative K-line tilt (P = 0.034) showed a significant association with postoperative cervical sagittal imbalance at postoperative 2 years. Receiver operating characteristic curve analysis showed that a K-line tilt cutoff value of 12.5° had a sensitivity and specificity of 78.6% and 77.7%, respectively, for predicting postoperative sagittal imbalance. CONCLUSIONS Higher preoperative C2-C7 lordosis and less preoperative cervical extension capacity were risk factors of LCL. Small preoperative C2-C7 lordosis <10.5° and younger age were risk factors of postoperative kyphosis. Furthermore, a greater K-line tilt would increase the risk of postoperative sagittal imbalance, with a cutoff value of 12.5°.
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Affiliation(s)
- Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Gyeonggido, Republic of Korea
| | - Choon Sung Lee
- Department of Orthopedic Surgery, Gangnam Saint Peter's Hospital, Seoul, Republic of Korea
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Jung HA, Park S, Lee SH, Ahn JS, Ahn MJ, Sun JM. Dacomitinib in EGFR-mutant non-small-cell lung cancer with brain metastasis: a single-arm, phase II study. ESMO Open 2023; 8:102068. [PMID: 38016250 PMCID: PMC10774959 DOI: 10.1016/j.esmoop.2023.102068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/26/2023] [Accepted: 10/21/2023] [Indexed: 11/30/2023] Open
Abstract
INTRODUCTION Dacomitinib showed superior progression-free survival (PFS) and overall survival compared to gefitinib in patients with advanced non-small-cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR) mutations in the ARCHER1050 study. However, because that study did not include patients with brain metastases, the efficacy of dacomitinib in patients with brain metastases has not been clarified. PATIENTS AND METHODS This single-arm phase II study enrolled 30 patients with treatment-naïve advanced NSCLC harboring activating EGFR mutations from January 2021 to June 2021 and started them on dacomitinib (45 mg/day). All patients had non-irradiated brain metastases with a diameter of ≥5 mm. The primary endpoint was confirmed intracranial objective response rate (iORR). RESULTS Patients had exon 19 deletions (46.7%) and L858R mutations in exon 21 (55.3%). The confirmed iORR was 96.7% (29/30), with an intracranial complete response of 63.3%. Median intracranial PFS (iPFS) was not reached, with 12- and 18-month iPFS rates of 78.6% [95% confidence interval (CI) 64.8% to 95.4%] and 70.4% (95% CI 54.9% to 90.1%), respectively. In the competing risk analysis, the 12-month cumulative incidence of intracranial progression was 16.7%. Regarding the overall efficacy for intracranial and extracranial lesions, the overall ORR was 96.7%, and the median PFS was 17.5 months (95% CI 15.2 months-not reached). Grade 3 or higher treatment-related adverse events were reported in 16.7% of patients, and 83.3% required a reduced dacomitinib dose to manage adverse events. However, none permanently discontinued dacomitinib treatment due to treatment-related adverse events. CONCLUSIONS Dacomitinib has outstanding intracranial efficacy in patients with EGFR-mutant NSCLC with brain metastases.
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Affiliation(s)
- H A Jung
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S-H Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J S Ahn
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - M-J Ahn
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J-M Sun
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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Yang JJ, Kim HJ, Lee JB, Park S. Preoperative Radiographic Simulation for Partial Uncinate Process Resection during Anterior Cervical Discectomy and Fusion to Achieve Adequate Foraminal Decompression and Prevention of Vertebral Artery Injury. Asian Spine J 2023; 17:1024-1034. [PMID: 37946338 PMCID: PMC10764128 DOI: 10.31616/asj.2023.0087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/19/2023] [Accepted: 04/26/2023] [Indexed: 11/12/2023] Open
Abstract
STUDY DESIGN Retrospective radiographic study. PURPOSE This study aims to demonstrate the proper resection trajectory of a partial posterior uncinate process resection combined with anterior cervical discectomy and fusion (ACDF) and evaluate whether foraminal stenosis or uncinate process degeneration increases the risk of vertebral artery (VA) injury. OVERVIEW OF LITERATURE Appropriate resection trajectory that could result in sufficient decompression and avoid vertebral artery injury is yet unknown. METHODS We retrospectively reviewed patients who underwent cervical magnetic resonance imaging and computed tomography angiography for preoperative ACDF evaluation. The segments were classified according to the presence of foraminal stenosis. The height, thickness, anteroposterior length, horizontal distance from the uncinate process to the VA, and vertical distance from the uncinate process baseline to the VA of the uncinate process were measured. The distance between the uncinate anterior margin and the resection trajectory (UAM-to-RT) was measured. RESULTS There were no VA injuries or root injuries among the 101 patients who underwent ACDF (163 segments, mean age of 56.3±12.2). Uncinate anteroposterior length was considerably longer in foramens with foraminal stenosis, whereas uncinate process height, thickness, and distance between the uncinate process and VA were not significantly associated with foraminal stenosis. There were no significant differences in radiographic parameters based on uncinate degeneration. The UAM-to-RT distances for adequate decompression were 1.6±1.4 mm (range, 0-4.8 mm), 3.4±1.7 mm (range, 0-7.1 mm), 4.0±1.7 mm (range, 0-9.0 mm), and 4.5±1.2 mm (range, 2.5-7.5 mm) for C3-C4, C4-C5, C5-C6, and C6-C7, respectively. CONCLUSIONS More than half of the uncinate process in the anteroposterior plane should be removed for adequate neural foramen decompression. Foraminal stenosis or uncinate degeneration did not alter the relative anatomy of the uncinate process and the VA and did not impact VA injury risk.
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Affiliation(s)
- Jae Jun Yang
- Department of Orthopaedic Surgery, Dongguk University Ilsan Hospital, Goyang,
Korea
| | - Ho-Jun Kim
- Department of Orthopaedic Surgery, Dongguk University Ilsan Hospital, Goyang,
Korea
| | - Jin Bog Lee
- Department of Orthopaedic Surgery, Dongguk University Ilsan Hospital, Goyang,
Korea
| | - Sehan Park
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul,
Korea
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Lee DH, Park S, Seok SY, Cho JH, Hwang CJ, Kim IH, Baek SH. Fate of pseudarthrosis detected 2 years after anterior cervical discectomy and fusion: results of a minimum 5-year follow-up. Spine J 2023; 23:1790-1798. [PMID: 37487933 DOI: 10.1016/j.spinee.2023.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/26/2023]
Abstract
BACKGROUND CONTEXT Prior study has shown that 70% of cervical pseudarthrosis after anterior cervical discectomy and fusion (ACDF) detected at 1 year will go on to fusion by 2 year. Pseudarthrosis detected 2 years after ACDF may have different bone healing potential compared to nonunion detected 1 year after surgery. Therefore, it might have a different clinical significance. PURPOSE To examine the radiographic and clinical prognosis of pseudarthrosis detected 2 years after ACDF with a minimum follow-up of 5 years. STUDY DESIGN/SETTING Retrospective cohort study. PATIENTS SAMPLE A total of 249 patients who completed a 5-year follow-up after ACDF. OUTCOMES MEASURES Clinical outcomes such as neck pain visual analogue scale (VAS), arm pain VAS, and neck disability index (NDI) and radiographic assessment such as X-ray, computed tomography (CT) scan. METHODS A total of 249 patients who completed a 5-year follow-up after ACDF were retrospectively reviewed. Patients who were diagnosed with pseudarthrosis at 2 years postoperatively were included. Fusion, neck pain VAS, arm pain VAS, and NDI were assessed. The results were compared between the union group (patients who achieved union), and the nonunion group (patients with pseudarthrosis) at 5 years postoperatively. RESULTS Among the patients who had pseudarthrosis at 2 years postoperatively, the fusion rate at 5 years was 32.6% (14/43). While the union group showed continued improvements in neck pain VAS, arm pain VAS, and NDI until 5 years, the nonunion group showed significant worsening of arm pain VAS and NDI at 5 years, with the values of neck pain VAS, arm pain VAS, and NDI being significantly worse than those of the union group at 5 years. CONCLUSION The incidence of pseudarthrosis detected at 2 years postoperatively after ACDF was 67.4%, and it remained unfused at 5 years postoperatively. Nonunion identified 2 years after ACDF may be considered a poor prognostic factor because it has less potential to achieve fusion with further follow-up and a higher chance of worsening clinical symptoms. Therefore, the presence of fusion at the 2-year follow-up can be considered an indicator of the success of the surgery.
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Affiliation(s)
- Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sang Yun Seok
- Department of Orthopedic Surgery, Daejeon Eulji Medical Center, University of Eulji College of Medicine, Daejeon, Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - In Hee Kim
- Department of Orthopedic Surgery, National police hospital, Seoul, Korea
| | - Seung Hyun Baek
- Department of Orthopedic Surgery, Daejeon Eulji Medical Center, University of Eulji College of Medicine, Daejeon, Korea.
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Park S, Ceulemans E, Van Deun K. Logistic regression with sparse common and distinctive covariates. Behav Res Methods 2023; 55:4143-4174. [PMID: 36781701 PMCID: PMC10700465 DOI: 10.3758/s13428-022-02011-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2022] [Indexed: 02/15/2023]
Abstract
Having large sets of predictor variables from multiple sources concerning the same individuals is becoming increasingly common in behavioral research. On top of the variable selection problem, predicting a categorical outcome using such data gives rise to an additional challenge of identifying the processes at play underneath the predictors. These processes are of particular interest in the setting of multi-source data because they can either be associated individually with a single data source or jointly with multiple sources. Although many methods have addressed the classification problem in high dimensionality, the additional challenge of distinguishing such underlying predictor processes from multi-source data has not received sufficient attention. To this end, we propose the method of Sparse Common and Distinctive Covariates Logistic Regression (SCD-Cov-logR). The method is a multi-source extension of principal covariates regression that combines with generalized linear modeling framework to allow classification of a categorical outcome. In a simulation study, SCD-Cov-logR resulted in outperformance compared to related methods commonly used in behavioral sciences. We also demonstrate the practical usage of the method under an empirical dataset.
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Affiliation(s)
- S Park
- Tilburg University, Tilburg, Netherlands.
| | | | - K Van Deun
- Tilburg University, Tilburg, Netherlands
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Hutchison CDM, Baxter JM, Fitzpatrick A, Dorlhiac G, Fadini A, Perrett S, Maghlaoui K, Lefèvre SB, Cordon-Preciado V, Ferreira JL, Chukhutsina VU, Garratt D, Barnard J, Galinis G, Glencross F, Morgan RM, Stockton S, Taylor B, Yuan L, Romei MG, Lin CY, Marangos JP, Schmidt M, Chatrchyan V, Buckup T, Morozov D, Park J, Park S, Eom I, Kim M, Jang D, Choi H, Hyun H, Park G, Nango E, Tanaka R, Owada S, Tono K, DePonte DP, Carbajo S, Seaberg M, Aquila A, Boutet S, Barty A, Iwata S, Boxer SG, Groenhof G, van Thor JJ. Optical control of ultrafast structural dynamics in a fluorescent protein. Nat Chem 2023; 15:1607-1615. [PMID: 37563326 PMCID: PMC10624617 DOI: 10.1038/s41557-023-01275-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 06/12/2023] [Indexed: 08/12/2023]
Abstract
The photoisomerization reaction of a fluorescent protein chromophore occurs on the ultrafast timescale. The structural dynamics that result from femtosecond optical excitation have contributions from vibrational and electronic processes and from reaction dynamics that involve the crossing through a conical intersection. The creation and progression of the ultrafast structural dynamics strongly depends on optical and molecular parameters. When using X-ray crystallography as a probe of ultrafast dynamics, the origin of the observed nuclear motions is not known. Now, high-resolution pump-probe X-ray crystallography reveals complex sub-ångström, ultrafast motions and hydrogen-bonding rearrangements in the active site of a fluorescent protein. However, we demonstrate that the measured motions are not part of the photoisomerization reaction but instead arise from impulsively driven coherent vibrational processes in the electronic ground state. A coherent-control experiment using a two-colour and two-pulse optical excitation strongly amplifies the X-ray crystallographic difference density, while it fully depletes the photoisomerization process. A coherent control mechanism was tested and confirmed the wave packets assignment.
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Affiliation(s)
| | - James M Baxter
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Ann Fitzpatrick
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Gabriel Dorlhiac
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Alisia Fadini
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Samuel Perrett
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Karim Maghlaoui
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Salomé Bodet Lefèvre
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Violeta Cordon-Preciado
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Josie L Ferreira
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Volha U Chukhutsina
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Douglas Garratt
- Quantum Optics and Laser Science Group, Blackett Laboratory, Imperial College London, London, UK
| | - Jonathan Barnard
- Quantum Optics and Laser Science Group, Blackett Laboratory, Imperial College London, London, UK
| | - Gediminas Galinis
- Quantum Optics and Laser Science Group, Blackett Laboratory, Imperial College London, London, UK
| | - Flo Glencross
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Rhodri M Morgan
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Sian Stockton
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Ben Taylor
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Letong Yuan
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Matthew G Romei
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Chi-Yun Lin
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Jon P Marangos
- Quantum Optics and Laser Science Group, Blackett Laboratory, Imperial College London, London, UK
| | - Marius Schmidt
- Physics Department, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Viktoria Chatrchyan
- Physikalisch Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Heidelberg, Germany
| | - Tiago Buckup
- Physikalisch Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Heidelberg, Germany
| | - Dmitry Morozov
- Nanoscience Center and Department of Chemistry, University of Jyväskylä, Jyväskylä, Finland
| | - Jaehyun Park
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
- Department of Chemical Engineering, POSTECH, Pohang, Republic of Korea
| | - Sehan Park
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Intae Eom
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Minseok Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Dogeun Jang
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Hyeongi Choi
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - HyoJung Hyun
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Gisu Park
- Pohang Accelerator Laboratory, POSTECH, Pohang, Republic of Korea
| | - Eriko Nango
- RIKEN SPring-8 Center, Sayo, Hyogo, Japan
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, Japan
| | - Rie Tanaka
- RIKEN SPring-8 Center, Sayo, Hyogo, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Sakyo, Kyoto, Japan
| | - Shigeki Owada
- RIKEN SPring-8 Center, Sayo, Hyogo, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo, Japan
| | - Kensuke Tono
- RIKEN SPring-8 Center, Sayo, Hyogo, Japan
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo, Japan
| | - Daniel P DePonte
- Linac Coherent Light Source, Stanford Linear Accelerator Centre (SLAC), National Accelerator Laboratory, Menlo Park, CA, USA
| | - Sergio Carbajo
- Linac Coherent Light Source, Stanford Linear Accelerator Centre (SLAC), National Accelerator Laboratory, Menlo Park, CA, USA
| | - Matt Seaberg
- Linac Coherent Light Source, Stanford Linear Accelerator Centre (SLAC), National Accelerator Laboratory, Menlo Park, CA, USA
| | - Andrew Aquila
- Linac Coherent Light Source, Stanford Linear Accelerator Centre (SLAC), National Accelerator Laboratory, Menlo Park, CA, USA
| | - Sebastien Boutet
- Linac Coherent Light Source, Stanford Linear Accelerator Centre (SLAC), National Accelerator Laboratory, Menlo Park, CA, USA
| | - Anton Barty
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Hamburg, Germany
| | - So Iwata
- RIKEN SPring-8 Center, Sayo, Hyogo, Japan
- Department of Cell Biology, Graduate School of Medicine, Kyoto University, Sakyo, Kyoto, Japan
| | - Steven G Boxer
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Gerrit Groenhof
- Nanoscience Center and Department of Chemistry, University of Jyväskylä, Jyväskylä, Finland
| | - Jasper J van Thor
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK.
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17
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Lee DH, Hwang CJ, Cho JH, Cho ST, Nam HW, Park S. Does Posterior Cord Compression From the Ligamentum Flavum Influence Clinical Outcomes After Anterior Cervical Discectomy and Fusion? Spine (Phila Pa 1976) 2023; 48:1526-1534. [PMID: 37522651 DOI: 10.1097/brs.0000000000004786] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 07/08/2023] [Indexed: 08/01/2023]
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVE To clarify whether outcomes of anterior cervical discectomy and fusion (ACDF) differ according to the presence of posterior cord compression from the ligamentum flavum (CCLF). SUMMARY OF BACKGROUND DATA Although ACDF effectively addresses anterior cord compression from disc material and bone spurs, it cannot address posterior compression. Whether ACDF could result in favorable outcomes when CCLF is present remains unclear. PATIENTS AND METHODS A total of 195 consecutive patients who underwent ACDF and were followed up for >2 years were included. CCLF was graded based on magnetic resonance imaging findings. Patients with CCLF grade 2 were classified as such, whereas patients with CCLF grades 0 to 1 were classified as the no-CCLF group. Patient characteristics, cervical sagittal parameters, neck pain visual analog scale, arm pain visual analog scale, and Japanese Orthopedic Association (JOA) score were assessed. Categorical variables were analyzed using a χ 2 test, whereas continuous variables were analyzed using the Student t test. Multivariable logistic regression analysis was performed to elucidate factors associated with JOA recovery rates of >50%. RESULTS One hundred sixty-seven patients (85.6%) were included in the no-CCLF group, whereas the remaining 28 patients (14.4%) were included in the CCLF group. Among patients in the CCLF group, 14 patients (50.0%) achieved clinical improvement. JOA score significantly improved in the no-CCLF group after the operation ( P < 0.001), whereas improvement was not appreciated in the CCLF group ( P = 0.642). JOA scores at 3 months ( P = 0.037) and 2 years ( P = 0.001) postoperatively were significantly higher in the no-CCLF group. Furthermore, the JOA recovery rate at 2 years after surgery was significantly higher in the no-CCLF group ( P = 0.042). Logistic regression demonstrated that CCLF was significantly associated with a JOA recovery rate of >50% at 2 years after surgery (odds ratio: 2.719; 95% CI: 1.12, 6.60). CONCLUSION ACDF performed for patients with CCLF grade 2 showed inferior JOA score improvement compared with those with CCLF grade 0 or 1. ACDF cannot remove posterior compressive structures, which limits its utility when ligamentum flavum significantly contributes to cord compression.
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Affiliation(s)
- Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sung Tan Cho
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, Gyeonggi-do, Republic of Korea
| | - Hyun Wook Nam
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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18
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Aguillard DP, Albahri T, Allspach D, Anisenkov A, Badgley K, Baeßler S, Bailey I, Bailey L, Baranov VA, Barlas-Yucel E, Barrett T, Barzi E, Bedeschi F, Berz M, Bhattacharya M, Binney HP, Bloom P, Bono J, Bottalico E, Bowcock T, Braun S, Bressler M, Cantatore G, Carey RM, Casey BCK, Cauz D, Chakraborty R, Chapelain A, Chappa S, Charity S, Chen C, Cheng M, Chislett R, Chu Z, Chupp TE, Claessens C, Convery ME, Corrodi S, Cotrozzi L, Crnkovic JD, Dabagov S, Debevec PT, Di Falco S, Di Sciascio G, Drendel B, Driutti A, Duginov VN, Eads M, Edmonds A, Esquivel J, Farooq M, Fatemi R, Ferrari C, Fertl M, Fienberg AT, Fioretti A, Flay D, Foster SB, Friedsam H, Froemming NS, Gabbanini C, Gaines I, Galati MD, Ganguly S, Garcia A, George J, Gibbons LK, Gioiosa A, Giovanetti KL, Girotti P, Gohn W, Goodenough L, Gorringe T, Grange J, Grant S, Gray F, Haciomeroglu S, Halewood-Leagas T, Hampai D, Han F, Hempstead J, Hertzog DW, Hesketh G, Hess E, Hibbert A, Hodge Z, Hong KW, Hong R, Hu T, Hu Y, Iacovacci M, Incagli M, Kammel P, Kargiantoulakis M, Karuza M, Kaspar J, Kawall D, Kelton L, Keshavarzi A, Kessler DS, Khaw KS, Khechadoorian Z, Khomutov NV, Kiburg B, Kiburg M, Kim O, Kinnaird N, Kraegeloh E, Krylov VA, Kuchinskiy NA, Labe KR, LaBounty J, Lancaster M, Lee S, Li B, Li D, Li L, Logashenko I, Lorente Campos A, Lu Z, Lucà A, Lukicov G, Lusiani A, Lyon AL, MacCoy B, Madrak R, Makino K, Mastroianni S, Miller JP, Miozzi S, Mitra B, Morgan JP, Morse WM, Mott J, Nath A, Ng JK, Nguyen H, Oksuzian Y, Omarov Z, Osofsky R, Park S, Pauletta G, Piacentino GM, Pilato RN, Pitts KT, Plaster B, Počanić D, Pohlman N, Polly CC, Price J, Quinn B, Qureshi MUH, Ramachandran S, Ramberg E, Reimann R, Roberts BL, Rubin DL, Santi L, Schlesier C, Schreckenberger A, Semertzidis YK, Shemyakin D, Sorbara M, Stöckinger D, Stapleton J, Still D, Stoughton C, Stratakis D, Swanson HE, Sweetmore G, Sweigart DA, Syphers MJ, Tarazona DA, Teubner T, Tewsley-Booth AE, Tishchenko V, Tran NH, Turner W, Valetov E, Vasilkova D, Venanzoni G, Volnykh VP, Walton T, Weisskopf A, Welty-Rieger L, Winter P, Wu Y, Yu B, Yucel M, Zeng Y, Zhang C. Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm. Phys Rev Lett 2023; 131:161802. [PMID: 37925710 DOI: 10.1103/physrevlett.131.161802] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/05/2023] [Indexed: 11/07/2023]
Abstract
We present a new measurement of the positive muon magnetic anomaly, a_{μ}≡(g_{μ}-2)/2, from the Fermilab Muon g-2 Experiment using data collected in 2019 and 2020. We have analyzed more than 4 times the number of positrons from muon decay than in our previous result from 2018 data. The systematic error is reduced by more than a factor of 2 due to better running conditions, a more stable beam, and improved knowledge of the magnetic field weighted by the muon distribution, ω[over ˜]_{p}^{'}, and of the anomalous precession frequency corrected for beam dynamics effects, ω_{a}. From the ratio ω_{a}/ω[over ˜]_{p}^{'}, together with precisely determined external parameters, we determine a_{μ}=116 592 057(25)×10^{-11} (0.21 ppm). Combining this result with our previous result from the 2018 data, we obtain a_{μ}(FNAL)=116 592 055(24)×10^{-11} (0.20 ppm). The new experimental world average is a_{μ}(exp)=116 592 059(22)×10^{-11} (0.19 ppm), which represents a factor of 2 improvement in precision.
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Affiliation(s)
| | - T Albahri
- University of Liverpool, Liverpool, United Kingdom
| | - D Allspach
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Anisenkov
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - K Badgley
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Baeßler
- University of Virginia, Charlottesville, Virginia, USA
| | - I Bailey
- Lancaster University, Lancaster, United Kingdom
| | - L Bailey
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - V A Baranov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - E Barlas-Yucel
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - T Barrett
- Cornell University, Ithaca, New York, USA
| | - E Barzi
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - M Berz
- Michigan State University, East Lansing, Michigan, USA
| | - M Bhattacharya
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - H P Binney
- University of Washington, Seattle, Washington, USA
| | - P Bloom
- North Central College, Naperville, Illinois, USA
| | - J Bono
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Bottalico
- University of Liverpool, Liverpool, United Kingdom
| | - T Bowcock
- University of Liverpool, Liverpool, United Kingdom
| | - S Braun
- University of Washington, Seattle, Washington, USA
| | - M Bressler
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | | | - R M Carey
- Boston University, Boston, Massachusetts, USA
| | - B C K Casey
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Cauz
- Università di Udine, Udine, Italy
| | | | | | - S Chappa
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Charity
- University of Liverpool, Liverpool, United Kingdom
| | - C Chen
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - M Cheng
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - R Chislett
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - Z Chu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - T E Chupp
- University of Michigan, Ann Arbor, Michigan, USA
| | - C Claessens
- University of Washington, Seattle, Washington, USA
| | - M E Convery
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Corrodi
- Argonne National Laboratory, Lemont, Illinois, USA
| | | | - J D Crnkovic
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Dabagov
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | - P T Debevec
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | | | - B Drendel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - V N Duginov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M Eads
- Northern Illinois University, DeKalb, Illinois, USA
| | - A Edmonds
- Boston University, Boston, Massachusetts, USA
| | - J Esquivel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Farooq
- University of Michigan, Ann Arbor, Michigan, USA
| | - R Fatemi
- University of Kentucky, Lexington, Kentucky, USA
| | | | - M Fertl
- Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, Mainz, Germany
| | - A T Fienberg
- University of Washington, Seattle, Washington, USA
| | | | - D Flay
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - S B Foster
- Boston University, Boston, Massachusetts, USA
| | - H Friedsam
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | | | - I Gaines
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - S Ganguly
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Garcia
- University of Washington, Seattle, Washington, USA
| | - J George
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | | | - A Gioiosa
- Università del Molise, Campobasso, Italy
| | - K L Giovanetti
- Department of Physics and Astronomy, James Madison University, Harrisonburg, Virginia, USA
| | | | - W Gohn
- University of Kentucky, Lexington, Kentucky, USA
| | - L Goodenough
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - T Gorringe
- University of Kentucky, Lexington, Kentucky, USA
| | - J Grange
- University of Michigan, Ann Arbor, Michigan, USA
| | - S Grant
- Argonne National Laboratory, Lemont, Illinois, USA
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - F Gray
- Regis University, Denver, Colorado, USA
| | - S Haciomeroglu
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | | | - D Hampai
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | - F Han
- University of Kentucky, Lexington, Kentucky, USA
| | - J Hempstead
- University of Washington, Seattle, Washington, USA
| | - D W Hertzog
- University of Washington, Seattle, Washington, USA
| | - G Hesketh
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - E Hess
- INFN, Sezione di Pisa, Pisa, Italy
| | - A Hibbert
- University of Liverpool, Liverpool, United Kingdom
| | - Z Hodge
- University of Washington, Seattle, Washington, USA
| | - K W Hong
- University of Virginia, Charlottesville, Virginia, USA
| | - R Hong
- Argonne National Laboratory, Lemont, Illinois, USA
- University of Kentucky, Lexington, Kentucky, USA
| | - T Hu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Y Hu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | | | | | - P Kammel
- University of Washington, Seattle, Washington, USA
| | | | - M Karuza
- INFN, Sezione di Trieste, Trieste, Italy
| | - J Kaspar
- University of Washington, Seattle, Washington, USA
| | - D Kawall
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - L Kelton
- University of Kentucky, Lexington, Kentucky, USA
| | - A Keshavarzi
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - D S Kessler
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - K S Khaw
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | | | - N V Khomutov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - B Kiburg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Kiburg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- North Central College, Naperville, Illinois, USA
| | - O Kim
- University of Mississippi, University, Mississippi, USA
| | - N Kinnaird
- Boston University, Boston, Massachusetts, USA
| | - E Kraegeloh
- University of Michigan, Ann Arbor, Michigan, USA
| | - V A Krylov
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | - K R Labe
- Cornell University, Ithaca, New York, USA
| | - J LaBounty
- University of Washington, Seattle, Washington, USA
| | - M Lancaster
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - S Lee
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - B Li
- Argonne National Laboratory, Lemont, Illinois, USA
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - D Li
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - L Li
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - I Logashenko
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | | | - Z Lu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - A Lucà
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - G Lukicov
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | | | - A L Lyon
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - B MacCoy
- University of Washington, Seattle, Washington, USA
| | - R Madrak
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - K Makino
- Michigan State University, East Lansing, Michigan, USA
| | | | - J P Miller
- Boston University, Boston, Massachusetts, USA
| | - S Miozzi
- INFN, Sezione di Roma Tor Vergata, Rome, Italy
| | - B Mitra
- University of Mississippi, University, Mississippi, USA
| | - J P Morgan
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - W M Morse
- Brookhaven National Laboratory, Upton, New York, USA
| | - J Mott
- Boston University, Boston, Massachusetts, USA
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Nath
- INFN, Sezione di Napoli, Naples, Italy
| | - J K Ng
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - H Nguyen
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - Y Oksuzian
- Argonne National Laboratory, Lemont, Illinois, USA
| | - Z Omarov
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - R Osofsky
- University of Washington, Seattle, Washington, USA
| | - S Park
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | | | | | - R N Pilato
- University of Liverpool, Liverpool, United Kingdom
| | - K T Pitts
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - B Plaster
- University of Kentucky, Lexington, Kentucky, USA
| | - D Počanić
- University of Virginia, Charlottesville, Virginia, USA
| | - N Pohlman
- Northern Illinois University, DeKalb, Illinois, USA
| | - C C Polly
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - J Price
- University of Liverpool, Liverpool, United Kingdom
| | - B Quinn
- University of Mississippi, University, Mississippi, USA
| | - M U H Qureshi
- Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, Mainz, Germany
| | | | - E Ramberg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - R Reimann
- Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, Mainz, Germany
| | - B L Roberts
- Boston University, Boston, Massachusetts, USA
| | - D L Rubin
- Cornell University, Ithaca, New York, USA
| | - L Santi
- Università di Udine, Udine, Italy
| | - C Schlesier
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - Y K Semertzidis
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - D Shemyakin
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - M Sorbara
- INFN, Sezione di Roma Tor Vergata, Rome, Italy
| | - D Stöckinger
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - J Stapleton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Still
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - C Stoughton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Stratakis
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - H E Swanson
- University of Washington, Seattle, Washington, USA
| | - G Sweetmore
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | | | - M J Syphers
- Northern Illinois University, DeKalb, Illinois, USA
| | - D A Tarazona
- Cornell University, Ithaca, New York, USA
- Michigan State University, East Lansing, Michigan, USA
- University of Liverpool, Liverpool, United Kingdom
| | - T Teubner
- University of Liverpool, Liverpool, United Kingdom
| | - A E Tewsley-Booth
- University of Kentucky, Lexington, Kentucky, USA
- University of Michigan, Ann Arbor, Michigan, USA
| | - V Tishchenko
- Brookhaven National Laboratory, Upton, New York, USA
| | - N H Tran
- Boston University, Boston, Massachusetts, USA
| | - W Turner
- University of Liverpool, Liverpool, United Kingdom
| | - E Valetov
- Michigan State University, East Lansing, Michigan, USA
| | - D Vasilkova
- Department of Physics and Astronomy, University College London, London, United Kingdom
- University of Liverpool, Liverpool, United Kingdom
| | - G Venanzoni
- University of Liverpool, Liverpool, United Kingdom
| | - V P Volnykh
- Joint Institute for Nuclear Research, Dubna, Russia
| | - T Walton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Weisskopf
- Michigan State University, East Lansing, Michigan, USA
| | - L Welty-Rieger
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - P Winter
- Argonne National Laboratory, Lemont, Illinois, USA
| | - Y Wu
- Argonne National Laboratory, Lemont, Illinois, USA
| | - B Yu
- University of Mississippi, University, Mississippi, USA
| | - M Yucel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - Y Zeng
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - C Zhang
- University of Liverpool, Liverpool, United Kingdom
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19
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Cantalupo P, Diacou A, Park S, Soman V, Chen J, Glenn D, Chandran U, Clark D. Single-cell Transcriptional Analysis of the Cellular Immune Response in the Oral Mucosa of Mice. bioRxiv 2023:2023.10.18.562816. [PMID: 37904993 PMCID: PMC10614882 DOI: 10.1101/2023.10.18.562816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Periodontal health is dependent on a symbiotic relationship of the host immune response with the oral microbiota. Pathologic shifts of the microbial plaque elicit an immune response that eventually leads to the recruitment and activation of osteoclasts and matrix metalloproteinases and the eventual tissue destruction that is evident in periodontal disease. Once the microbial stimulus is removed, an active process of inflammatory resolution begins. The goal of this work was to use scRNAseq to demonstrate the unique cellular immune response across three distinct conditions of periodontal health, disease, and resolution using mouse models. Periodontal disease was induced using a ligature model. Resolution was modeled by removing the ligature and allowing the mouse to recover. Immune cells (Cd45+) were isolated from the periodontium and analyzed via scRNAseq. Gene signature shifts across the three conditions were characterized and shown to be largely driven by macrophage and neutrophils during the periodontal disease and resolution conditions. Resolution of periodontal disease was characterized by the differential regulation of unique gene subsets. Clustering analysis characterized multiple cellular subpopulations within B Cells, macrophages, and neutrophils that demonstrated differential expansion and contraction across conditions of periodontal health, disease, and resolution. Interestingly, we identified a transcriptionally distinct macrophage subpopulation that expanded during the resolution condition and demonstrated an immunoregulatory gene signature. We identified a cell surface marker for this resolution-associated macrophage subgroup (Cd74) and validated the expansion of this subgroup during resolution via flow cytometry. This work presents a robust immune cell atlas for study of the immunological changes in the oral mucosa during three distinct conditions of periodontal health, disease, and resolution and it improves our understanding of the cellular and molecular markers that characterize health from disease for the development of future diagnostics and therapies.
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20
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Voronov DL, Wang T, Park S, Huang L, Gullikson EM, Salmassi F, Austin C, Padmore HA, Idir M. Nanometer flat blazed x-ray gratings using ion beam figure correction. Opt Express 2023; 31:34789-34799. [PMID: 37859227 DOI: 10.1364/oe.501418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/13/2023] [Indexed: 10/21/2023]
Abstract
With the development of nanometer accuracy stitching interferometry, ion beam figuring (IBF) of x-ray mirrors can now be achieved with unprecedented performance. However, the process of producing x-ray diffraction gratings on these surfaces may degrade the figure quality due to process errors introduced during the ruling of the grating grooves. To address this challenge, we have investigated the post-production correction of gratings using IBF, where stitching interferometry is used to provide in-process feedback. A concern with ion beam correction in this case is that ions will induce enough surface mobility of atoms to cause smoothing of the grating structure and degradation of diffraction efficiency. In this study we found however that it is possible to achieve a nanometer-level planarity of the global grating surface with IBF, while preserving the grating structure. The preservation was so good, that we could not detect a change in the diffraction efficiency after ion beam correction. This is of major importance in achieving ultra-high spectral resolution, and the preservation of brightness for coherent x-ray beams.
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21
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Russial O, De Los Santos JF, Hockstein N, Park S, Clements L, Desouza-Lawrence L, Raben A. Combined Pulsed Radiotherapy ("QUAD SHOT" regimen) with Immune Checkpoint Inhibition (ICI) to Enhance Immune Response for LAHNSCC in Patients Considered Ineligible for Curative Intent Therapy. Int J Radiat Oncol Biol Phys 2023; 117:e620. [PMID: 37785860 DOI: 10.1016/j.ijrobp.2023.06.2003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To utilize pulsed QUAD SHOT as an in-situ vaccine by stimulating the tumor microenvironment (TME) and excluding elective nodal sites, to enhance the immune response with concurrent ICI. MATERIALS/METHODS Thirty-three patients (20 males and 13 females), with a median age of 81 years, seen at two community hospitals, determined to be ineligible for curative treatment, were treated. All pts received pulsed dose QUAD shot regimen to gross disease (44.4-59.2 Gy) spaced 3 weeks apart with addition of an approved ICI (Pembrolizumab or Cemiplimab). ERT was directed ONLY to Gross Primary + nodal disease. ICI was administered in most pts after the first QUAD shot to enhance immune response. ICI was continued adjuvantly until a > Grade 3 adverse event (AE) or progression of disease (POD). Pts with either advanced cutaneous or mucosal SCC were included (cSCC, mSCC). 39% presented with N1-2 adenopathy, and 24% presented with recurrent disease. PD-L1 status were not routinely obtained. RESULTS The median number of ICI cycles delivered was 5 (range 2-24). All pts completed at least 3 QUAD shots. Overall LRC for all 33 pts was 69.7%, with a mean follow-up of 11 months (1-39). LRC for 33 pts at 1 and 2 years after the end of radiation were 61.07% and 55.52%, respectively. The percentage of pts free from elective regional recurrences at 1 and 2 years was 87.13% for both cSCC and mSCC groups. Overall, 6 pts (18%) experienced distant failure. Freedom from distant failure at 1 yr after QUAD shot completion by pathology was 100.00% for cSCC and 77.08% for mSCC. DFS for all 33 pts at 1 and 2 yrs were 59.39% and 37.12%, respectively. DFS at 1 year for cSCC was 100% and 53% for mSCC. Median DFS for the mSCC was 13.8 months. Overall survival for all 33 pts was 45.45% with a median OS time of 17.7 months. The 1 and 2 year OS rates were 65% and 33%. Overall toxicity was low and manageable. Gr 3 mucositis occurred in 1 patient and 5 (15%) developed Gr 2 AE's. Gr 3/4 IMAR's were observed in 3 pts and included infusion reaction, colitis, and fatigue/FTT and were discontinued. 4 pts required post QUAD PEG's unrelated to radiation toxicity and due to POD. CONCLUSION In elderly, frail, or comorbidly ill patients with LAHNC, the addition of ICI to involved field QUAD shot regimen nearly tripled the median OS rate from prior publications with QUAD shot alone from 5.7 months to 17 months in our series. The low percentage of failure in the elective nodal beds was particularly encouraging based on our hypothesis. This approach represents the next step in an evolution away from conventional RT approaches that engender greater toxicity and warrants further study.
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Affiliation(s)
- O Russial
- Thomas Jefferson University Hospital, Philadelphia, PA
| | | | | | - S Park
- Christiana Care Health System, Newark, DE
| | - L Clements
- Christiana Care Health System, Newark, DE
| | | | - A Raben
- Christiana Care Health System, Helen F. Graham Cancer Center, Newark, DE
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22
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Lee DH, Cho ST, Park S, Hwang CJ, Cho JH, Kim JH. Surgical complications and incomplete canal widening of the vertebral body sliding osteotomy to treat cervical myelopathy. J Neurosurg Spine 2023; 39:520-526. [PMID: 37382311 DOI: 10.3171/2023.5.spine23287] [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: 03/16/2023] [Accepted: 05/12/2023] [Indexed: 06/30/2023]
Abstract
OBJECTIVE Vertebral body sliding osteotomy (VBSO) is a surgical technique that anteriorly translates the vertebral body with compressive lesions and achieves cord decompression through canal widening. However, data on the surgical complications of VBSO are lacking. Furthermore, it has not been known whether VBSO could be a viable alternative in the treatment of cervical myelopathy even when the preoperative canal-occupying ratio (COR) is large, which seems to frequently result in incomplete canal widening. This study aimed to describe the incidence of VBSO-associated surgical complications and to evaluate the incidence and risk factors of incomplete canal widening. METHODS A total of 109 patients who underwent VBSO to treat cervical myelopathy were retrospectively reviewed. Neck pain visual analog scale, Neck Disability Index, Japanese Orthopaedic Association (JOA) scores, and surgical complications were evaluated. For radiological evaluation, C2-7 lordosis, C2-7 sagittal vertical axis, and COR were measured. Patients with a preoperative COR < 50% (n = 60) and those with a COR ≥ 50% (n = 49) were compared and logistic regression analysis was performed to identify factors associated with incomplete canal widening. RESULTS The most frequent complication in the patients was mild dysphagia (7.3%). Dural tears were observed during posterior longitudinal ligament resection (n = 1) and foraminotomy (n = 1). Two patients underwent reoperation due to radiculopathy from adjacent-segment disease. Incomplete canal widening occurred in 49 patients. According to logistic regression analysis, high preoperative COR was the only factor associated with incomplete canal widening. The amount of canal widening and JOA recovery rate in the COR ≥ 50% group were significantly higher than in the COR < 50% group. CONCLUSIONS Mild dysphagia was the most common complication following VBSO. Although VBSO aims to decrease the complication rate of corpectomy, it was not free of dural tears. Special care would be required during the posterior longitudinal ligament resection. Incomplete canal widening occurred in 45.0% of patients, and high preoperative COR was the only risk factor for incomplete canal widening. However, high preoperative COR would not be a contraindication for VBSO, given that favorable clinical outcomes were presented in the COR ≥ 50% group.
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Affiliation(s)
- Dong-Ho Lee
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; and
| | - Sung Tan Cho
- 2Department of Orthopedic Surgery, Ilsan Paik Hospital, University of Inje College of Medicine, Gyeonggi-do, Republic of Korea
| | - Sehan Park
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; and
| | - Chang Ju Hwang
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; and
| | - Jae Hwan Cho
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; and
| | - Jin Hwan Kim
- 2Department of Orthopedic Surgery, Ilsan Paik Hospital, University of Inje College of Medicine, Gyeonggi-do, Republic of Korea
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23
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Kim JY, Park S, Kim EO, Chang E, Bae S, Kim MJ, Chong YP, Choi SH, Lee SO, Kim YS, Jung J, Kim SH. The seasonality of carbapenemase-producing Enterobacterales in South Korea. J Hosp Infect 2023; 140:87-89. [PMID: 37506769 DOI: 10.1016/j.jhin.2023.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Affiliation(s)
- J Y Kim
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea
| | - S Park
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea
| | - E O Kim
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea
| | - E Chang
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea
| | - S Bae
- Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M J Kim
- Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y P Chong
- Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-H Choi
- Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-O Lee
- Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J Jung
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea; Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - S-H Kim
- Office for Infection Control, Asan Medical Center, Seoul, Republic of Korea; Departments of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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24
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Lee DH, Lee HJ, Cho JH, Hwang CJ, Yang JJ, Lee CS, Park S. Foraminal Restenosis After Posterior Cervical Foraminotomy for the Treatment of Cervical Radiculopathy. Global Spine J 2023; 13:2357-2366. [PMID: 35323054 PMCID: PMC10538319 DOI: 10.1177/21925682221083268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES To elucidate incidence, risk factor, and clinical effect of bone regrowth after posterior cervical foraminotomy (PCF). METHODS Ninety-eight patients who underwent PCF for the treatment of cervical radiculopathy and were followed up for >2 years were retrospectively reviewed. Foraminal dimension, sagittal gap at resected area, facet thickness, lamina length, and cervical range of motion (ROM) were measured. Neck pain visual analogue scale (VAS), arm pain VAS, and neck disability index (NDI) were recorded. Radiographic measures were compared between segments with foraminal narrowing of ≥20% at the 2-years follow-up (restenosis segments) and foraminal narrowing of <20% (patent segments). RESULTS Sixty-nine patients with 109 segments were included. 73.4% (80/109) of foramens demonstrated foraminal narrowing and decrease of foraminal dimension of ≥20% occurred in 30.3% (30/109). Foraminal dimension at postoperative 2-days was significantly higher in the restenosis segments (P = .047). Furthermore, increase of foraminal dimension was significantly associated with foraminal restenosis of ≥20% (P = .018). Facet thickness was significantly higher in the restenosis segments compared to patent segments at postoperative 2-years follow-up (P = .038). Neck pain VAS was significantly aggravated only in the restenosis group at postoperative 2-years follow-up (P < .001). CONCLUSIONS Foraminal narrowing commonly occurs after PCF due to bone healing. Bone growth occurs in all directions while medial facet growth contributes more to foraminal restenosis. Greater widening of foramen during PCF is a risk factor for postoperative foramen restenosis. Therefore, amount of bone resection should be kept optimal and excessive resection should be avoided to prevent foramen restenosis.
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Affiliation(s)
- Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hyeong-Joo Lee
- Department of Orthopedic surgery, Busan Bumin Hospital, Republic of Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Gyeonggido, Republic of Korea
| | - Choon Sung Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Gyeonggido, Republic of Korea
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25
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Seok SY, Lee DH, Lee HR, Cho JH, Hwang CJ, Park S. Atrophy of the Posterior Cricoarytenoid Muscle as an Indicator of a Recurrent Laryngeal Nerve Injury History Before Revision Anterior Cervical Spine Surgery. Global Spine J 2023:21925682231200781. [PMID: 37700436 DOI: 10.1177/21925682231200781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/14/2023] Open
Abstract
STUDY DESIGN Retrospective study. OBJECTIVES In our recent study, we observed some cases of symptomatic normal vocal cord motility instead of asymptomatic vocal cord palsy (VCP) in preoperative laryngoscopy of a revision anterior cervical spine surgery (ACSS) cohort. We assumed the intrinsic muscle atrophy caused by recurrent laryngeal nerve injury could cause vocal cord-related symptoms. Thus, radiological examinations were reviewed in relation to the posterior cricoarytenoid (PCA) muscle, one of the intrinsic muscles. METHODS We retrospectively analyzed 64 patients who underwent a revision ACSS. Patients with vocal cord-related symptoms were classified as symptomatic group (group S, n = 11), and those without symptoms as asymptomatic group (group AS, n = 53). The bilateral size and signal intensity of the PCA muscles in these patients were measured in the axial view with preoperative computed tomography (CT) and magnetic resonance imaging (MRI) evaluations. Since the size and signal intensity values were different on each image, the ratios of the contralateral and ipsilateral muscle values were analyzed for each modality. RESULTS There was no VCP on laryngoscopy study. However, the mean ratio of the PCA muscle size on CT was 1.40 ± .37 in group S and 1.02 ± .12 in group AS (P = .007). These values on the MRI were 1.49 ± .45 in group S and 1.02 ± .14 in group AS, which was also a significant difference (P = .008). CONCLUSIONS Evaluating the size of the PCA muscle before revision ACSS may predict a previous recurrent laryngeal nerve injury. Careful planning for the appropriate approach should be undertaken if vocal cord-related symptoms and atrophy of PCA muscle are evident.
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Affiliation(s)
- Sang Yun Seok
- Department of Orthopedic Surgery, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyung Rae Lee
- Department of Orthopedic Surgery, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, Uijeongbu, Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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26
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Lauwers NL, Van Renterghem K, Osmonov D, Suarez-Sarmiento A, Perito P, Park S, Andrianne R, Ralph D, Mykoniatis I. Analysis of the effects of different surgical approaches on corporotomy localization in inflatable penile implant surgery performed by expert implant surgeons. Int J Impot Res 2023; 35:539-543. [PMID: 35760888 DOI: 10.1038/s41443-022-00593-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/08/2022]
Abstract
Inflatable penile prostheses may be a solution for patients with erectile dysfunction. To our knowledge, no data exist regarding the effect of different surgical approaches used during implantation on the site of the corporotomy. The main purpose of this multicentre study was to investigate the influence of different surgical approaches on the corporotomy site.Data were collected from six expert implant surgeons. Surgical notes were searched for the incision site, proximal, distal and total corporal length measurement, total cylinder length, length of rear tip extenders, surgery time, type of implant, and reservoir placement. The association between the proximal/distal corporal length and the recorded covariates was examined using a linear mixed model.A total of 1757 patients who underwent virgin prosthesis implantation were included in the analysis. Analysis of proximal/distal measurements was performed on 1709 patients. The proximal/distal ratio had a mean of 0.8 ± 0.3 in penoscrotal incisions (n = 391), 0.7 ± 0.2 in infrapubic incisions (n = 832) and 0.7 ± 0.2 in subcoronal (n = 486) incisions. We observed no significant differences in proximal/distal measurements between the highest-volume surgeons.We could not draw a firm conclusion about the difference in corporotomy site between different surgical approaches, but we found no significant difference between the highest-volume surgeons using different techniques.
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Affiliation(s)
- N L Lauwers
- University of Leuven, Department of Urology, Leuven, Belgium.
| | - K Van Renterghem
- University of Leuven, Department of Urology, Leuven, Belgium.
- University of Hasselt, Hasselt, Belgium.
- Jessa Hospital, Department of Urology, Hasselt, Belgium.
| | - D Osmonov
- University Medical Center Schleswig-Holstein, Campus Kiel, Department of Urology, Kiel, Germany
| | | | - P Perito
- Perito Urology, Department of Urology, Miami, United States of America
| | - S Park
- Sewum Prosthetic Urology Center of Excellence, Seoul, South Korea
| | - R Andrianne
- Le Centre Hospitalier Universitaire de Liège, Department of Urology, Liege, Belgium
| | - D Ralph
- University College Hospital, Department of Urology, London, United Kingdom
| | - I Mykoniatis
- Aristotle University of Thessaloniki, Department of Urology, Thessaloniki, Greece
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27
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Kim H, Lim T, Ha GE, Lee JY, Kim JW, Chang N, Kim SH, Kim KH, Lee J, Cho Y, Kim BW, Abrahamsson A, Kim SH, Kim HJ, Park S, Lee SJ, Park J, Cheong E, Kim BM, Cho HS. Structure-based drug discovery of a corticotropin-releasing hormone receptor 1 antagonist using an X-ray free-electron laser. Exp Mol Med 2023; 55:2039-2050. [PMID: 37653040 PMCID: PMC10545732 DOI: 10.1038/s12276-023-01082-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/24/2023] [Accepted: 06/27/2023] [Indexed: 09/02/2023] Open
Abstract
Thus far, attempts to develop drugs that target corticotropin-releasing hormone receptor 1 (CRF1R), a drug target in stress-related therapy, have been unsuccessful. Studies have focused on using high-resolution G protein-coupled receptor (GPCR) structures to develop drugs. X-ray free-electron lasers (XFELs), which prevent radiation damage and provide access to high-resolution compositions, have helped accelerate GPCR structural studies. We elucidated the crystal structure of CRF1R complexed with a BMK-I-152 antagonist at 2.75 Å using fixed-target serial femtosecond crystallography. The results revealed that two unique hydrogen bonds are present in the hydrogen bond network, the stalk region forms an alpha helix and the hydrophobic network contains an antagonist binding site. We then developed two antagonists-BMK-C203 and BMK-C205-and determined the CRF1R/BMK-C203 and CRF1R/BMK-C205 complex structures at 2.6 and 2.2 Å, respectively. BMK-C205 exerted significant antidepressant effects in mice and, thus, may be utilized to effectively identify structure-based drugs against CRF1R.
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Affiliation(s)
- Hoyoung Kim
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Taehyun Lim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Go Eun Ha
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jee-Young Lee
- New Drug Development Center (NDDC), Daegu Gyeongbuk Medical Innovation Foundation (K-Medi hub), 80 Chumbok-ro, Dong-gu, Daegu, 41061, Korea
| | - Jun-Woo Kim
- New Drug Development Center (NDDC), Daegu Gyeongbuk Medical Innovation Foundation (K-Medi hub), 80 Chumbok-ro, Dong-gu, Daegu, 41061, Korea
| | - Nienping Chang
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Si Hyun Kim
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Ki Hun Kim
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Jaeick Lee
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Yongju Cho
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea
| | - Byeong Wook Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Alva Abrahamsson
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung Hwan Kim
- New Drug Development Center (NDDC), Daegu Gyeongbuk Medical Innovation Foundation (K-Medi hub), 80 Chumbok-ro, Dong-gu, Daegu, 41061, Korea
| | - Hyo-Ji Kim
- New Drug Development Center (NDDC), Daegu Gyeongbuk Medical Innovation Foundation (K-Medi hub), 80 Chumbok-ro, Dong-gu, Daegu, 41061, Korea
| | - Sehan Park
- Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Republic of Korea
| | - Sang Jae Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Republic of Korea
| | - Jaehyun Park
- Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Republic of Korea
| | - Eunji Cheong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea.
| | - B Moon Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Hyun-Soo Cho
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, 50 Yonsei-ro, Seoul, 03722, Republic of Korea.
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Seok SY, Lee DH, Lee HR, Park S, Cho JH, Hwang CJ, Lee CS. Relationship Between C2 Semispinalis Cervicis Preservation and C2 Spinous Process Morphology During Cervical Laminoplasty Involving C3. Global Spine J 2023; 13:1938-1945. [PMID: 34920674 PMCID: PMC10556921 DOI: 10.1177/21925682211062496] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
STUDY DESIGN Retrospective study. OBJECTIVES Due to anatomical variations in the semispinalis cervicis insertion in the C2 spinous process, complete preservation is not always possible when the C3 level is included in a cervical laminoplasty. Three-dimensional computed tomography was used to evaluate the relationship between the incidence of semispinalis cervicis injury and the C2 inter-spinous angle. METHODS We included 95 patients who underwent a cervical laminoplasty that included a C3 laminectomy for cervical myelopathy. Patients with a C2 inter-spinous angle above and below 60° were classified into wide- and narrow-angled groups, respectively (n = 48 and n = 47). Whether the C2 semispinalis cervicis insertion was preserved, or detached and reattached was reviewed from surgical records. The pre and postoperative C2-C7 lordosis and range of motion (ROM) were measured, and clinical outcomes were obtained from the patient charts. RESULTS The C2 semispinalis cervicis was preserved in 47 patients (97.9%) in the wide-angled group but only in 14 patients (29.8%) in the narrow-angled group (P < .001). The postoperative C2-C7 lordosis extension and ROM were significantly greater in the wide-angled (P = .048 and .036). Postoperative neck pain was significantly greater in the narrow-angled (P = .018). CONCLUSIONS The morphology of the C2 spinous process indicates that a C2 semispinalis cervicis insertion preservation is possible during a cervical laminoplasty that includes a C3 laminectomy. A careful surgical procedure should be conducted when the C2 inter-spinous angle is above 60° to increase the likelihood of achieving this preservation and thereby obtaining a more favorable clinical outcomes.
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Affiliation(s)
- Sang Yun Seok
- Department of Orthopedic Surgery, Daejeon Eulji Medical Center, Eulju University School of Medicine, Daejeon, Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyung Rae Lee
- Department of Orthopedic Surgery, Uijeongbu Eulji Medical Center, Eulju University School of Medicine, Gyeonggido, Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Ilsan Dongguk University Hospital, Dongguk University School of Medicine, Gyeonggido, Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Choon Sung Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Loong HH, Shimizu T, Prawira A, Tan AC, Tran B, Day D, Tan DSP, Ting FIL, Chiu JW, Hui M, Wilson MK, Prasongsook N, Koyama T, Reungwetwattana T, Tan TJ, Heong V, Voon PJ, Park S, Tan IB, Chan SL, Tan DSW. Recommendations for the use of next-generation sequencing in patients with metastatic cancer in the Asia-Pacific region: a report from the APODDC working group. ESMO Open 2023; 8:101586. [PMID: 37356359 PMCID: PMC10319859 DOI: 10.1016/j.esmoop.2023.101586] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/27/2023] [Accepted: 05/18/2023] [Indexed: 06/27/2023] Open
Abstract
INTRODUCTION Next-generation sequencing (NGS) diagnostics have shown clinical utility in predicting survival benefits in patients with certain cancer types who are undergoing targeted drug therapies. Currently, there are no guidelines or recommendations for the use of NGS in patients with metastatic cancer from an Asian perspective. In this article, we present the Asia-Pacific Oncology Drug Development Consortium (APODDC) recommendations for the clinical use of NGS in metastatic cancers. METHODS The APODDC set up a group of experts in the field of clinical cancer genomics to (i) understand the current NGS landscape for metastatic cancers in the Asia-Pacific (APAC) region; (ii) discuss key challenges in the adoption of NGS testing in clinical practice; and (iii) adapt/modify the European Society for Medical Oncology guidelines for local use. Nine cancer types [breast cancer (BC), gastric cancer (GC), nasopharyngeal cancer (NPC), ovarian cancer (OC), prostate cancer, lung cancer, and colorectal cancer (CRC) as well as cholangiocarcinoma and hepatocellular carcinoma (HCC)] were identified, and the applicability of NGS was evaluated in daily practice and/or clinical research. Asian ethnicity, accessibility of NGS testing, reimbursement, and socioeconomic and local practice characteristics were taken into consideration. RESULTS The APODDC recommends NGS testing in metastatic non-small-cell lung cancer (NSCLC). Routine NGS testing is not recommended in metastatic BC, GC, and NPC as well as cholangiocarcinoma and HCC. The group suggested that patients with epithelial OC may be offered germline and/or somatic genetic testing for BReast CAncer gene 1 (BRCA1), BRCA2, and other OC susceptibility genes. Access to poly (ADP-ribose) polymerase inhibitors is required for NGS to be of clinical utility in prostate cancer. Allele-specific PCR or a small-panel multiplex-gene NGS was suggested to identify key alterations in CRC. CONCLUSION This document offers practical guidance on the clinical utility of NGS in specific cancer indications from an Asian perspective.
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Affiliation(s)
- H H Loong
- Department of Clinical Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - T Shimizu
- Department of Pulmonary Medicine and Medical Oncology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
| | - A Prawira
- Cancer Trials and Research Unit, Prince of Wales Hospital, Sydney, Australia
| | - A C Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - B Tran
- Department of Oncology, Peter MacCallum Cancer Centre, Melbourne
| | - D Day
- Department of Oncology, Monash Health and Monash University, Australia
| | - D S P Tan
- Department of Haematology-Oncology, National University Cancer Institute, Singapore
| | - F I L Ting
- Department of Medicine, Dr. Pablo O. Torre Memorial Hospital, Bacolod, Philippines
| | - J W Chiu
- Department of Medicine, The University of Hong Kong, HKSAR, Pok Fu Lam, Hong Kong, China
| | - M Hui
- Department of Medical Oncology, Chris O'Brien Lifehouse, Camperdown, Australia
| | - M K Wilson
- Department of Medical Oncology, Auckland City Hospital, Auckland, New Zealand
| | - N Prasongsook
- Division of Medical Oncology, Phramongkutklao Hospital, Bangkok, Thailand
| | - T Koyama
- Department of Experimental Therapeutics, National Cancer Center Hospital, Tokyo, Japan
| | - T Reungwetwattana
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - T J Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - V Heong
- Department Medical Oncology, Tan Tock Seng Hospital, Singapore
| | - P J Voon
- Radiotherapy and Oncology Department, Hospital Umum Sarawak, Kuching, Malaysia
| | - S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - I B Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - S L Chan
- Department of Clinical Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - D S W Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore.
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Yang JJ, Kim DM, Park S. Comparison of Fusion, Subsidence, and Clinical Results Between 3D-Printed Porous Titanium Cage and Polyetheretherketone (PEEK) Cage in Posterior Lumbar Interbody Fusion: A Minimum of 2-years follow-up. World Neurosurg 2023:S1878-8750(23)00915-4. [PMID: 37419312 DOI: 10.1016/j.wneu.2023.06.132] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 07/09/2023]
Abstract
OBJECTIVES Early osteointegration and reduced modulus of elasticity has been proven with 3D-printed porous titanium (3DP-titanium) cage used for posterior lumbar interbody fusion (PLIF). The present study was conducted to demonstrate fusion rate, subsidence, and clinical outcome of the 3DP-titanium cage in PLIF and to compare its results with those of polyetheretherketone (PEEK) cage METHODS: A total of 150 patients who underwent 1-2 level PLIF and were followed-up for more than 2 years were retrospectively reviewed. Fusion rates, subsidence, segmental lordosis, back pain visual analogue scale (VAS), leg pain VAS, and Owestry disability index (ODI) were assessed. RESULTS Higher 1-year (3DP-titanium, 86.9%; PEEK, 67.7%; p=0.002) and 2-years (3DP-titanium, 92.9%; PEEK, 82.3%; p=0.037) fusion rate could be achieved with using 3DP-titanium cages for PLIF compared to PEEK cages. Amount of subsidence (3DP-titanium, 1.4±1.6mm; PEEK, 1.9±1.8mm; p=0.092) and incidence of significant subsidence (3DP-titanium, 17.9%; PEEK, 23.4%; p=0.389) was not significantly different between the two materials. Furthermore, back pain/leg pain VAS and ODI also was not significantly different between the two groups. In logistic regression analysis, cage material (p=0.027) showed significant association with fusion while number of levels fused (p=0.012) was associated with subsidence. CONCLUSION The 3DP-titanium cage resulted in a higher fusion rate than the PEEK cage when applied for PLIF. The subsidence rate did not differ significantly between the two cage materials. Therefore, the 3DP-titanium cage can be safely applied for PLIF, considering its stable construct.
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Affiliation(s)
- Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Gyeonggido, Republic of Korea
| | - Dong-Min Kim
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Gyeonggido, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Abdulameer NJ, Acharya U, Adare A, Aidala C, Ajitanand NN, Akiba Y, Akimoto R, Alfred M, Apadula N, Aramaki Y, Asano H, Atomssa ET, Awes TC, Azmoun B, Babintsev V, Bai M, Bandara NS, Bannier B, Barish KN, Bathe S, Bazilevsky A, Beaumier M, Beckman S, Belmont R, Berdnikov A, Berdnikov Y, Bichon L, Black D, Blankenship B, Bok JS, Borisov V, Boyle K, Brooks ML, Bryslawskyj J, Buesching H, Bumazhnov V, Campbell S, Canoa Roman V, Chen CH, Chiu M, Chi CY, Choi IJ, Choi JB, Chujo T, Citron Z, Connors M, Corliss R, Corrales Morales Y, Csanád M, Csörgő T, Datta A, Daugherity MS, David G, Dean CT, DeBlasio K, Dehmelt K, Denisov A, Deshpande A, Desmond EJ, Ding L, Dion A, Doomra V, Do JH, Drees A, Drees KA, Durham JM, Durum A, En'yo H, Enokizono A, Esha R, Fadem B, Fan W, Feege N, Fields DE, Finger M, Finger M, Firak D, Fitzgerald D, Fokin SL, Frantz JE, Franz A, Frawley AD, Gallus P, Gal C, Garg P, Ge H, Giles M, Giordano F, Glenn A, Goto Y, Grau N, Greene SV, Grosse Perdekamp M, Gunji T, Guragain H, Gu Y, Hachiya T, Haggerty JS, Hahn KI, Hamagaki H, Hanks J, Han SY, Harvey M, Hasegawa S, Hemmick TK, He X, Hill JC, Hodges A, Hollis RS, Homma K, Hong B, Hoshino T, Huang J, Ikeda Y, Imai K, Imazu Y, Inaba M, Iordanova A, Isenhower D, Ivanishchev D, Jacak BV, Jeon SJ, Jezghani M, Jiang X, Ji Z, Johnson BM, Joo E, Joo KS, Jouan D, Jumper DS, Kang JH, Kang JS, Kawall D, Kazantsev AV, Key JA, Khachatryan V, Khanzadeev A, Khatiwada A, Kihara K, Kim C, Kim DH, Kim DJ, Kim EJ, Kim HJ, Kim M, Kim T, Kim YK, Kincses D, Kingan A, Kistenev E, Klatsky J, Kleinjan D, Kline P, Koblesky T, Kofarago M, Koster J, Kotov D, Kovacs L, Kurgyis B, Kurita K, Kurosawa M, Kwon Y, Lajoie JG, Larionova D, Lebedev A, Lee KB, Lee SH, Leitch MJ, Leitgab M, Lewis NA, Lim SH, Liu MX, Li X, Loomis DA, Lynch D, Lökös S, Majoros T, Makdisi YI, Makek M, Manion A, Manko VI, Mannel E, McCumber M, McGaughey PL, McGlinchey D, McKinney C, Meles A, Mendoza M, Meredith B, Miake Y, Mignerey AC, Miller AJ, Milov A, Mishra DK, Mitchell JT, Mitrankova M, Mitrankov I, Miyasaka S, Mizuno S, Mondal MM, Montuenga P, Moon T, Morrison DP, Moukhanova TV, Muhammad A, Mulilo B, Murakami T, Murata J, Mwai A, Nagamiya S, Nagle JL, Nagy MI, Nakagawa I, Nakagomi H, Nakano K, Nattrass C, Nelson S, Netrakanti PK, Nihashi M, Niida T, Nouicer R, Novitzky N, Nukazuka G, Nyanin AS, O'Brien E, Ogilvie CA, Oh J, Orjuela Koop JD, Orosz M, Osborn JD, Oskarsson A, Ozawa K, Pak R, Pantuev V, Papavassiliou V, Park JS, Park S, Patel L, Patel M, Pate SF, Peng JC, Peng W, Perepelitsa DV, Perera GDN, Peressounko DY, PerezLara CE, Perry J, Petti R, Pinkenburg C, Pinson R, Pisani RP, Potekhin M, Pun A, Purschke ML, Radzevich PV, Rak J, Ramasubramanian N, Ravinovich I, Read KF, Reynolds D, Riabov V, Riabov Y, Richford D, Riveli N, Roach D, Rolnick SD, Rosati M, Rowan Z, Rubin JG, Runchey J, Saito N, Sakaguchi T, Sako H, Samsonov V, Sarsour M, Sato S, Sawada S, Schaefer B, Schmoll BK, Sedgwick K, Seele J, Seidl R, Sen A, Seto R, Sett P, Sexton A, Sharma D, Shein I, Shibata M, Shibata TA, Shigaki K, Shimomura M, Shi Z, Shukla P, Sickles A, Silva CL, Silvermyr D, Singh BK, Singh CP, Singh V, Slunečka M, Smith KL, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Stankus PW, Stepanov M, Stoll SP, Sugitate T, Sukhanov A, Sumita T, Sun J, Sun Z, Sziklai J, Takahama R, Takahara A, Taketani A, Tanida K, Tannenbaum MJ, Tarafdar S, Taranenko A, Timilsina A, Todoroki T, Tomášek M, Torii H, Towell M, Towell R, Towell RS, Tserruya I, Ueda Y, Ujvari B, van Hecke HW, Vargyas M, Velkovska J, Virius M, Vrba V, Vznuzdaev E, Wang XR, Wang Z, Watanabe D, Watanabe Y, Watanabe YS, Wei F, Whitaker S, Wolin S, Wong CP, Woody CL, Wysocki M, Xia B, Xue L, Yalcin S, Yamaguchi YL, Yanovich A, Yoon I, Younus I, Yushmanov IE, Zajc WA, Zelenski A, Zou L. Measurement of Direct-Photon Cross Section and Double-Helicity Asymmetry at sqrt[s]=510 GeV in p[over →]+p[over →] Collisions. Phys Rev Lett 2023; 130:251901. [PMID: 37418716 DOI: 10.1103/physrevlett.130.251901] [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: 02/17/2022] [Revised: 11/04/2022] [Accepted: 04/28/2023] [Indexed: 07/09/2023]
Abstract
We present measurements of the cross section and double-helicity asymmetry A_{LL} of direct-photon production in p[over →]+p[over →] collisions at sqrt[s]=510 GeV. The measurements have been performed at midrapidity (|η|<0.25) with the PHENIX detector at the Relativistic Heavy Ion Collider. At relativistic energies, direct photons are dominantly produced from the initial quark-gluon hard scattering and do not interact via the strong force at leading order. Therefore, at sqrt[s]=510 GeV, where leading-order-effects dominate, these measurements provide clean and direct access to the gluon helicity in the polarized proton in the gluon-momentum-fraction range 0.02<x<0.08, with direct sensitivity to the sign of the gluon contribution.
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Affiliation(s)
- N J Abdulameer
- Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
| | - U Acharya
- Georgia State University, Atlanta, Georgia 30303, USA
| | - A Adare
- University of Colorado, Boulder, Colorado 80309, USA
| | - C Aidala
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
| | - N N Ajitanand
- Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA
| | - Y Akiba
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - R Akimoto
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - M Alfred
- Department of Physics and Astronomy, Howard University, Washington, D.C. 20059, USA
| | - N Apadula
- Iowa State University, Ames, Iowa 50011, USA
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - Y Aramaki
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - H Asano
- Kyoto University, Kyoto 606-8502, Japan
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - E T Atomssa
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - T C Awes
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - B Azmoun
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - V Babintsev
- IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia
| | - M Bai
- Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - N S Bandara
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337, USA
| | - B Bannier
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - K N Barish
- University of California-Riverside, Riverside, California 92521, USA
| | - S Bathe
- Baruch College, City University of New York, New York, New York 10010, USA
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - A Bazilevsky
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M Beaumier
- University of California-Riverside, Riverside, California 92521, USA
| | - S Beckman
- University of Colorado, Boulder, Colorado 80309, USA
| | - R Belmont
- University of Colorado, Boulder, Colorado 80309, USA
- Physics and Astronomy Department, University of North Carolina at Greensboro, Greensboro, North Carolina 27412, USA
| | - A Berdnikov
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - Y Berdnikov
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - L Bichon
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | - D Black
- University of California-Riverside, Riverside, California 92521, USA
| | - B Blankenship
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | - J S Bok
- New Mexico State University, Las Cruces, New Mexico 88003, USA
| | - V Borisov
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - K Boyle
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M L Brooks
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J Bryslawskyj
- Baruch College, City University of New York, New York, New York 10010, USA
- University of California-Riverside, Riverside, California 92521, USA
| | - H Buesching
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - V Bumazhnov
- IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia
| | - S Campbell
- Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533, USA
- Iowa State University, Ames, Iowa 50011, USA
| | - V Canoa Roman
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - C-H Chen
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M Chiu
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - C Y Chi
- Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533, USA
| | - I J Choi
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - J B Choi
- Jeonbuk National University, Jeonju, 54896, Korea
| | - T Chujo
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - Z Citron
- Weizmann Institute, Rehovot 76100, Israel
| | - M Connors
- Georgia State University, Atlanta, Georgia 30303, USA
| | - R Corliss
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | | | - M Csanád
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
| | - T Csörgő
- MATE, Laboratory of Femtoscopy, Károly Róbert Campus, H-3200 Gyöngyös, Mátraiút 36, Hungary
- Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences (Wigner RCP, RMKI) H-1525 Budapest 114, P.O. Box 49, Budapest, Hungary
| | - A Datta
- University of New Mexico, Albuquerque, New Mexico 87131, USA
| | | | - G David
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - C T Dean
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - K DeBlasio
- University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - K Dehmelt
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - A Denisov
- IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia
| | - A Deshpande
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - E J Desmond
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - L Ding
- Iowa State University, Ames, Iowa 50011, USA
| | - A Dion
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - V Doomra
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - J H Do
- Yonsei University, IPAP, Seoul 120-749, Korea
| | - A Drees
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - K A Drees
- Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J M Durham
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Durum
- IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia
| | - H En'yo
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - A Enokizono
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Physics Department, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - R Esha
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - B Fadem
- Muhlenberg College, Allentown, Pennsylvania 18104-5586, USA
| | - W Fan
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - N Feege
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - D E Fields
- University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - M Finger
- Charles University, Faculty of Mathematics and Physics, 180 00 Troja, Prague, Czech Republic
| | - M Finger
- Charles University, Faculty of Mathematics and Physics, 180 00 Troja, Prague, Czech Republic
| | - D Firak
- Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - D Fitzgerald
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
| | - S L Fokin
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - J E Frantz
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - A Franz
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - A D Frawley
- Florida State University, Tallahassee, Florida 32306, USA
| | - P Gallus
- Czech Technical University, Zikova 4, 166 36 Prague 6, Czech Republic
| | - C Gal
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - P Garg
- Department of Physics, Banaras Hindu University, Varanasi 221005, India
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - H Ge
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - M Giles
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - F Giordano
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - A Glenn
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Y Goto
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - N Grau
- Department of Physics, Augustana University, Sioux Falls, South Dakota 57197, USA
| | - S V Greene
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | | | - T Gunji
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - H Guragain
- Georgia State University, Atlanta, Georgia 30303, USA
| | - Y Gu
- Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA
| | - T Hachiya
- Nara Women's University, Kita-uoya Nishi-machi Nara 630-8506, Japan
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J S Haggerty
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - K I Hahn
- Ewha Womans University, Seoul 120-750, Korea
| | - H Hamagaki
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - J Hanks
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - S Y Han
- Ewha Womans University, Seoul 120-750, Korea
- Korea University, Seoul 02841, Korea
| | - M Harvey
- Texas Southern University, Houston, Texas 77004, USA
| | - S Hasegawa
- Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - T K Hemmick
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - X He
- Georgia State University, Atlanta, Georgia 30303, USA
| | - J C Hill
- Iowa State University, Ames, Iowa 50011, USA
| | - A Hodges
- Georgia State University, Atlanta, Georgia 30303, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - R S Hollis
- University of California-Riverside, Riverside, California 92521, USA
| | - K Homma
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - B Hong
- Korea University, Seoul 02841, Korea
| | - T Hoshino
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - J Huang
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Y Ikeda
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - K Imai
- Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - Y Imazu
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - M Inaba
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - A Iordanova
- University of California-Riverside, Riverside, California 92521, USA
| | - D Isenhower
- Abilene Christian University, Abilene, Texas 79699, USA
| | - D Ivanishchev
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
| | - B V Jacak
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - S J Jeon
- Myongji University, Yongin, Kyonggido 449-728, Korea
| | - M Jezghani
- Georgia State University, Atlanta, Georgia 30303, USA
| | - X Jiang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Z Ji
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - B M Johnson
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Georgia State University, Atlanta, Georgia 30303, USA
| | - E Joo
- Korea University, Seoul 02841, Korea
| | - K S Joo
- Myongji University, Yongin, Kyonggido 449-728, Korea
| | - D Jouan
- IPN-Orsay, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, BP1, F-91406 Orsay, France
| | - D S Jumper
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - J H Kang
- Yonsei University, IPAP, Seoul 120-749, Korea
| | - J S Kang
- Hanyang University, Seoul 133-792, Korea
| | - D Kawall
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337, USA
| | - A V Kazantsev
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - J A Key
- University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - V Khachatryan
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - A Khanzadeev
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
| | - A Khatiwada
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - K Kihara
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - C Kim
- Korea University, Seoul 02841, Korea
| | - D H Kim
- Ewha Womans University, Seoul 120-750, Korea
| | - D J Kim
- Helsinki Institute of Physics and University of Jyväskylä, P.O.Box 35, FI-40014 Jyväskylä, Finland
| | - E-J Kim
- Jeonbuk National University, Jeonju, 54896, Korea
| | - H-J Kim
- Yonsei University, IPAP, Seoul 120-749, Korea
| | - M Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea
| | - T Kim
- Ewha Womans University, Seoul 120-750, Korea
| | - Y K Kim
- Hanyang University, Seoul 133-792, Korea
| | - D Kincses
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
| | - A Kingan
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - E Kistenev
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J Klatsky
- Florida State University, Tallahassee, Florida 32306, USA
| | - D Kleinjan
- University of California-Riverside, Riverside, California 92521, USA
| | - P Kline
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - T Koblesky
- University of Colorado, Boulder, Colorado 80309, USA
| | - M Kofarago
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
- Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences (Wigner RCP, RMKI) H-1525 Budapest 114, P.O. Box 49, Budapest, Hungary
| | - J Koster
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - D Kotov
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - L Kovacs
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
| | - B Kurgyis
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
| | - K Kurita
- Physics Department, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - M Kurosawa
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - Y Kwon
- Yonsei University, IPAP, Seoul 120-749, Korea
| | - J G Lajoie
- Iowa State University, Ames, Iowa 50011, USA
| | - D Larionova
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - A Lebedev
- Iowa State University, Ames, Iowa 50011, USA
| | - K B Lee
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S H Lee
- Iowa State University, Ames, Iowa 50011, USA
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - M J Leitch
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Leitgab
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - N A Lewis
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
| | - S H Lim
- Pusan National University, Pusan 46241, Korea
- Yonsei University, IPAP, Seoul 120-749, Korea
| | - M X Liu
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - X Li
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D A Loomis
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
| | - D Lynch
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - S Lökös
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
| | - T Majoros
- Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
| | - Y I Makdisi
- Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M Makek
- Weizmann Institute, Rehovot 76100, Israel
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32 HR-10002 Zagreb, Croatia
| | - A Manion
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - V I Manko
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - E Mannel
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M McCumber
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - P L McGaughey
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D McGlinchey
- University of Colorado, Boulder, Colorado 80309, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C McKinney
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - A Meles
- New Mexico State University, Las Cruces, New Mexico 88003, USA
| | - M Mendoza
- University of California-Riverside, Riverside, California 92521, USA
| | - B Meredith
- Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533, USA
| | - Y Miake
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - A C Mignerey
- University of Maryland, College Park, Maryland 20742, USA
| | - A J Miller
- Abilene Christian University, Abilene, Texas 79699, USA
| | - A Milov
- Weizmann Institute, Rehovot 76100, Israel
| | - D K Mishra
- Bhabha Atomic Research Centre, Bombay 400 085, India
| | - J T Mitchell
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M Mitrankova
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - Iu Mitrankov
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - S Miyasaka
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, Oh-okayama, Meguro, Tokyo 152-8551, Japan
| | - S Mizuno
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - M M Mondal
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - P Montuenga
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - T Moon
- Korea University, Seoul 02841, Korea
- Yonsei University, IPAP, Seoul 120-749, Korea
| | - D P Morrison
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - T V Moukhanova
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - A Muhammad
- Mississippi State University, Mississippi State, Mississippi 39762, USA
| | - B Mulilo
- Korea University, Seoul 02841, Korea
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Department of Physics, School of Natural Sciences, University of Zambia, Great East Road Campus, Box 32379 Lusaka, Zambia
| | - T Murakami
- Kyoto University, Kyoto 606-8502, Japan
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - J Murata
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Physics Department, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - A Mwai
- Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA
| | - S Nagamiya
- KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - J L Nagle
- University of Colorado, Boulder, Colorado 80309, USA
| | - M I Nagy
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
| | - I Nakagawa
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - H Nakagomi
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - K Nakano
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, Oh-okayama, Meguro, Tokyo 152-8551, Japan
| | - C Nattrass
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - S Nelson
- Florida A&M University, Tallahassee, Florida 32307, USA
| | | | - M Nihashi
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - T Niida
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - R Nouicer
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - N Novitzky
- Helsinki Institute of Physics and University of Jyväskylä, P.O.Box 35, FI-40014 Jyväskylä, Finland
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - G Nukazuka
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - A S Nyanin
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - E O'Brien
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - C A Ogilvie
- Iowa State University, Ames, Iowa 50011, USA
| | - J Oh
- Pusan National University, Pusan 46241, Korea
| | | | - M Orosz
- Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
| | - J D Osborn
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A Oskarsson
- Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - K Ozawa
- KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - R Pak
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - V Pantuev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - V Papavassiliou
- New Mexico State University, Las Cruces, New Mexico 88003, USA
| | - J S Park
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea
| | - S Park
- Mississippi State University, Mississippi State, Mississippi 39762, USA
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - L Patel
- Georgia State University, Atlanta, Georgia 30303, USA
| | - M Patel
- Iowa State University, Ames, Iowa 50011, USA
| | - S F Pate
- New Mexico State University, Las Cruces, New Mexico 88003, USA
| | - J-C Peng
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - W Peng
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | - D V Perepelitsa
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- University of Colorado, Boulder, Colorado 80309, USA
- Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533, USA
| | - G D N Perera
- New Mexico State University, Las Cruces, New Mexico 88003, USA
| | - D Yu Peressounko
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - C E PerezLara
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - J Perry
- Iowa State University, Ames, Iowa 50011, USA
| | - R Petti
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - C Pinkenburg
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - R Pinson
- Abilene Christian University, Abilene, Texas 79699, USA
| | - R P Pisani
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M Potekhin
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - A Pun
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - M L Purschke
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - P V Radzevich
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - J Rak
- Helsinki Institute of Physics and University of Jyväskylä, P.O.Box 35, FI-40014 Jyväskylä, Finland
| | - N Ramasubramanian
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | | | - K F Read
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - D Reynolds
- Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA
| | - V Riabov
- National Research Nuclear University, MEPhI, Moscow Engineering Physics Institute, Moscow 115409, Russia
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
| | - Y Riabov
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
- Saint Petersburg State Polytechnic University, St. Petersburg 195251 Russia
| | - D Richford
- Baruch College, City University of New York, New York, New York 10010, USA
| | - N Riveli
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - D Roach
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | - S D Rolnick
- University of California-Riverside, Riverside, California 92521, USA
| | - M Rosati
- Iowa State University, Ames, Iowa 50011, USA
| | - Z Rowan
- Baruch College, City University of New York, New York, New York 10010, USA
| | - J G Rubin
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
| | - J Runchey
- Iowa State University, Ames, Iowa 50011, USA
| | - N Saito
- KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - T Sakaguchi
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - H Sako
- Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - V Samsonov
- National Research Nuclear University, MEPhI, Moscow Engineering Physics Institute, Moscow 115409, Russia
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
| | - M Sarsour
- Georgia State University, Atlanta, Georgia 30303, USA
| | - S Sato
- Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - S Sawada
- KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - B Schaefer
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | - B K Schmoll
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - K Sedgwick
- University of California-Riverside, Riverside, California 92521, USA
| | - J Seele
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - R Seidl
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - A Sen
- Iowa State University, Ames, Iowa 50011, USA
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - R Seto
- University of California-Riverside, Riverside, California 92521, USA
| | - P Sett
- Bhabha Atomic Research Centre, Bombay 400 085, India
| | - A Sexton
- University of Maryland, College Park, Maryland 20742, USA
| | - D Sharma
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - I Shein
- IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia
| | - M Shibata
- Nara Women's University, Kita-uoya Nishi-machi Nara 630-8506, Japan
| | - T-A Shibata
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, Oh-okayama, Meguro, Tokyo 152-8551, Japan
| | - K Shigaki
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - M Shimomura
- Iowa State University, Ames, Iowa 50011, USA
- Nara Women's University, Kita-uoya Nishi-machi Nara 630-8506, Japan
| | - Z Shi
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - P Shukla
- Bhabha Atomic Research Centre, Bombay 400 085, India
| | - A Sickles
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - C L Silva
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Silvermyr
- Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - B K Singh
- Department of Physics, Banaras Hindu University, Varanasi 221005, India
| | - C P Singh
- Department of Physics, Banaras Hindu University, Varanasi 221005, India
| | - V Singh
- Department of Physics, Banaras Hindu University, Varanasi 221005, India
| | - M Slunečka
- Charles University, Faculty of Mathematics and Physics, 180 00 Troja, Prague, Czech Republic
| | - K L Smith
- Florida State University, Tallahassee, Florida 32306, USA
| | - R A Soltz
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - W E Sondheim
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S P Sorensen
- University of Tennessee, Knoxville, Tennessee 37996, USA
| | - I V Sourikova
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - P W Stankus
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M Stepanov
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337, USA
| | - S P Stoll
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - T Sugitate
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - A Sukhanov
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - T Sumita
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - J Sun
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - Z Sun
- Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
| | - J Sziklai
- Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences (Wigner RCP, RMKI) H-1525 Budapest 114, P.O. Box 49, Budapest, Hungary
| | - R Takahama
- Nara Women's University, Kita-uoya Nishi-machi Nara 630-8506, Japan
| | - A Takahara
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - A Taketani
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - K Tanida
- Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea
| | - M J Tannenbaum
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - S Tarafdar
- Vanderbilt University, Nashville, Tennessee 37235, USA
- Weizmann Institute, Rehovot 76100, Israel
| | - A Taranenko
- National Research Nuclear University, MEPhI, Moscow Engineering Physics Institute, Moscow 115409, Russia
- Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA
| | - A Timilsina
- Iowa State University, Ames, Iowa 50011, USA
| | - T Todoroki
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
- Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
| | - M Tomášek
- Czech Technical University, Zikova 4, 166 36 Prague 6, Czech Republic
| | - H Torii
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - M Towell
- Abilene Christian University, Abilene, Texas 79699, USA
| | - R Towell
- Abilene Christian University, Abilene, Texas 79699, USA
| | - R S Towell
- Abilene Christian University, Abilene, Texas 79699, USA
| | - I Tserruya
- Weizmann Institute, Rehovot 76100, Israel
| | - Y Ueda
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - B Ujvari
- Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary
| | - H W van Hecke
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Vargyas
- ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary
- Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences (Wigner RCP, RMKI) H-1525 Budapest 114, P.O. Box 49, Budapest, Hungary
| | - J Velkovska
- Vanderbilt University, Nashville, Tennessee 37235, USA
| | - M Virius
- Czech Technical University, Zikova 4, 166 36 Prague 6, Czech Republic
| | - V Vrba
- Czech Technical University, Zikova 4, 166 36 Prague 6, Czech Republic
- Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - E Vznuzdaev
- PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia
| | - X R Wang
- New Mexico State University, Las Cruces, New Mexico 88003, USA
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - Z Wang
- Baruch College, City University of New York, New York, New York 10010, USA
| | - D Watanabe
- Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Y Watanabe
- RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - Y S Watanabe
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
| | - F Wei
- New Mexico State University, Las Cruces, New Mexico 88003, USA
| | - S Whitaker
- Iowa State University, Ames, Iowa 50011, USA
| | - S Wolin
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - C P Wong
- Georgia State University, Atlanta, Georgia 30303, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C L Woody
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - M Wysocki
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - B Xia
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - L Xue
- Georgia State University, Atlanta, Georgia 30303, USA
| | - S Yalcin
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - Y L Yamaguchi
- Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA
| | - A Yanovich
- IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia
| | - I Yoon
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea
| | - I Younus
- Physics Department, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - I E Yushmanov
- National Research Center "Kurchatov Institute," Moscow 123098, Russia
| | - W A Zajc
- Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533, USA
| | - A Zelenski
- Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - L Zou
- University of California-Riverside, Riverside, California 92521, USA
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Lee DH, Cho ST, Park S, Hwang CJ, Cho JH, Kim JH. Vertebral Body Sliding Osteotomy as a Surgical Strategy for the Treatment of Cervical Myelopathy: Complications and Pitfalls. Neurospine 2023; 20:669-677. [PMID: 37401086 PMCID: PMC10323334 DOI: 10.14245/ns.2346320.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/22/2023] [Accepted: 05/07/2023] [Indexed: 07/05/2023] Open
Abstract
OBJECTIVE This retrospective cohort study has been aimed at evaluating the incidence of complications after vertebral body sliding osteotomy (VBSO) and analyzing some cases. Furthermore, the complications of VBSO were compared with those of anterior cervical corpectomy and fusion (ACCF). METHODS This study included 154 patients who underwent VBSO (n = 109) or ACCF (n = 45) for cervical myelopathy and were followed up for > 2 years. Surgical complications, clinical and radiological outcomes were analyzed. RESULTS The most common surgical complications after VBSO were dysphagia (n = 8, 7.3%) and significant subsidence (n = 6, 5.5%). There were 5 cases of C5 palsy (4.6%), followed by dysphonia (n = 4, 3.7%), implant failure (n = 3, 2.8%), pseudoarthrosis (n = 3, 2.8%), dural tears (n = 2, 1.8%), and reoperation (n = 2, 1.8%). C5 palsy and dysphagia did not require additional treatment and spontaneously resolved. The rates of reoperation (VBSO, 1.8%; ACCF, 11.1%; p = 0.02) and subsidence (VBSO, 5.5%; ACCF, 40%; p < 0.01) were significantly lower in VBSO than in ACCF. VBSO restored more C2-7 lordosis (VBSO, 13.9° ± 7.5°; ACCF, 10.1° ± 8.0°; p = 0.02) and segmental lordosis (VBSO, 15.7° ± 7.1°; ACCF, 6.6° ± 10.2°; p < 0.01) than ACCF. The clinical outcomes did not significantly differ between both groups. CONCLUSION VBSO has advantages over ACCF in terms of low rate of surgical complications related to reoperation and significant subsidence. However, dural tears may still occur despite the lessened need for ossified posterior longitudinal ligament lesion manipulation in VBSO; hence, caution is warranted.
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Affiliation(s)
- Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sung Tan Cho
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, Goyang, Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jin Hwan Kim
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, Goyang, Korea
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Seok SY, Cho JH, Lee HR, Lee DH, Park S, Lee CS, Hwang ES. Risk factors for postoperative complaints in patients following lumbar decompression and fusion: Analyses focusing on preoperative symptoms. J Orthop Sci 2023:S0949-2658(23)00126-4. [PMID: 37211525 DOI: 10.1016/j.jos.2023.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/11/2023] [Accepted: 04/25/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Several patients complained of residual symptoms following lumbar decompressive surgery for lumbar degenerative disease (LDD). However, few studies analyze this dissatisfaction by focusing on preoperative patients' symptoms. This study was conduct to determine the factors that could predict the patients' postoperative complaints by focusing on their preoperative symptoms. METHODS Four hundred and seventeen consecutive patients who underwent lumbar decompression and fusion surgery for LDD were included. Postoperative complaint was defined by at least twice same complaint during the outpatient follow-up of 6,12, 18 and 24 months after surgery. A comparative analysis was performed between complaint group (group C, N = 168) and non-complaint group (group NC, N = 249). Demographic, operative, symptomatic, and clinical factors were compared between the groups by univariate and multivariate analyses. RESULTS The main preoperative chief complaints were radiating pain (318/417, 76.2%). However, most common postoperative complaint was residual radiating pain (60/168, 35.7%) followed by tingling sensation (43/168, 25.6%). The presence of psychiatric disease (adjusted odds ratio [aOR], 4.666; P = 0.017), longer pain duration (aOR, 1.021; P < 0.001), pain to below the knee (aOR, 2.326; P = 0.001), preoperative tingling sensation (aOR, 2.631; P < 0.001), preoperative sensory and motor power decrease (aOR, 2.152 and 1.678; P = 0,047 and 0.011, respectively) were significantly correlated with postoperative patients' complaints in multivariate analysis. CONCLUSIONS The postoperative patients' complaints could be predicted and explained in advance by checking the preoperative characteristics of patients' symptoms, including the duration and site carefully. This could be helpful to enhance the understanding of the surgical results preoperatively, which could control the anticipation of the patients.
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Affiliation(s)
- Sang Yun Seok
- Department of Orthopedic Surgery, Daejeon Eulji Medical Center, Eulji University School of Medicine, South Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
| | - Hyung Rae Lee
- Department of Orthopedic Surgery, Uijeongbu Eulji Medical Center, Eulji University School of Medicine, South Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Choon Sung Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Eui Seung Hwang
- Emory University, College of Arts and Sciences, United States
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Clarke S, Geczy R, Balgi A, Park S, Zhao R, Swaminathan M, Tieu R, Hoang N, Webb C, Watt E, Wong M, Fujisawa M, Jain N, Zhang A, Thomas A. Abstract 1785: Multi-step engineering of gene-edited CAR T cells using RNA lipid nanoparticles. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-1785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Autologous chimeric antigen receptor (CAR) T therapies utilize patient cells and can be limited by cell quality, and the high manufacturing burden of viral vectors. As such, there is a need for allogeneic, “off-the-shelf” CAR T cells to make these transformative treatments widely available. However, allogeneic therapies require multiple genetic engineering steps to express CAR and to delete proteins responsible for graft-versus-host disease. Messenger RNA (mRNA) is a promising approach for expression of therapeutic proteins and gene editing nucleases. In this work, we demonstrate a new method for multi-step engineering of gene-edited CAR T cells using RNA lipid nanoparticles (LNPs).
LNPs encapsulating Spy-Cas9 mRNA, TCR and CD52 guide RNA (sgRNA), and CAR mRNA were produced using microfluidics. The CAR construct contained an anti-CD19 scFv binding domain and CD3ζ/4-1BB co-stimulatory domains. Microgram quantities of RNA LNPs were produced to optimize LNP packaging, cargo ratios, and sgRNA combinations. Lead candidates were scaled to milligrams. Purified human primary T cells were cultured, activated, and expanded in serum-free media in plates, flasks and bioreactors. CAR+, TCR− or CD52− cells were generated by addition of the corresponding LNP to activated cells. Cytotoxic killing was determined by co-culture assays with leukemia cells. Gene knockout, CAR expression, viability and cell killing were measured using flow-cytometry.
CD19 CAR was selected as a relevant protein for expression, with TCR and CD52 proteins as gene knockout targets. Single-step addition of CAR LNPs to T cells resulted in transfection efficiencies of 95.0 ± 2.1% and high protein expression. Upon TCR or CD52 LNP addition to T cells, the onset of gene editing was within 48 hours, reaching single target knockout efficiencies of 92.3 ± 3.0% (TCR−), and double knockouts (TCR−/CD52−) of 74.5 ± 6.1%. Similar results were obtained when comparing different LNP batch sizes (microgram to milligram RNA) and cell culture vessels (125,000 to 45 million cells), demonstrating scalability of both the LNP production and cell treatment. Cell viabilities above 90% were maintained at all steps and for all RNA LNPs. Finally, as proof-of-concept for multi-step engineering, sequential addition of TCR LNPs and CAR LNPs resulted in simultaneous CAR expression and TCR gene knockout. These “off-the-shelf” gene-edited CAR T cells were functionally equivalent to non-edited cells in a B cell killing assay, efficiently clearing over 80% of leukemia target cells at a 1:1 ratio.
Our findings demonstrate the advantages of LNPs for RNA delivery to T cells. The simple and gentle nature of LNP cell treatment allows for multiple genetic engineering steps for simultaneous expression and deletion of proteins. Furthermore, LNPs can be easily manufactured using microfluidics, enabling small-scale screening of RNA libraries and rapid scale-up of lead candidates for clinical translation.
Citation Format: Samuel Clarke, R Geczy, A Balgi, S Park, R Zhao, M Swaminathan, R Tieu, N Hoang, C Webb, E Watt, M Wong, M Fujisawa, N Jain, Angela Zhang, Anitha Thomas. Multi-step engineering of gene-edited CAR T cells using RNA lipid nanoparticles [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 1785.
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Affiliation(s)
- Samuel Clarke
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - R Geczy
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - A Balgi
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - S Park
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - R Zhao
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - M Swaminathan
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - R Tieu
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - N Hoang
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - C Webb
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - E Watt
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - M Wong
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - M Fujisawa
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - N Jain
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - Angela Zhang
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
| | - Anitha Thomas
- 1Precision NanoSystems ULC, Vancouver, British Columbia, Canada
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Yang JJ, Park S, Kim DM. Which Radiographic Parameter Can Aid in Deciding Optimal Allograft Height for Anterior Cervical Discectomy and Fusion? Clin Spine Surg 2023; 36:75-82. [PMID: 36823710 DOI: 10.1097/bsd.0000000000001447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 01/25/2023] [Indexed: 02/25/2023]
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES To identify preoperative radiographic parameters that can guide optimal allograft height selection for anterior cervical discectomy and fusion (ACDF). SUMMARY OF BACKGROUND DATA Allograft height selection for ACDF depends on intraoperative assessment supported by trials; however, there is currently no radiographic reference parameter that could aid in allograft height selection for improved outcomes. METHODS A total of 148 patients who underwent ACDF using allografts and were followed up for more than 1 year were retrospectively reviewed. Fusion rates, subsidence, segmental lordosis, and foraminal height were assessed. Segments were divided into 2 groups according to whether the inserted allograft height was within 1 mm from the following 3 reference radiographic parameters: (1) uncinate process height, (2) adjacent disc height, and (3) preoperative disc height +2 mm. RESULTS This study included 101 patients with 163 segments. Segments with an allograft-uncinate height difference of ≤1 mm had a significantly higher fusion rate at 1-year follow-up compared with segments with allograft-uncinate height difference of >1 mm [85/107 (79.4%) vs. 35/56 (62.5%); P =0.025]. Subsidence, segmental lordosis, and foraminal height did not significantly differ between the groups when segments were divided according to uncinate height. Multivariate logistic regression analysis demonstrated that allograft-uncinate height difference of ≤1 mm and allograft failure were factors associated with fusion. CONCLUSIONS The uncinate process height can guide optimal allograft height selection for ACDF. Using an allograft with an allograft-uncinate height difference of ≤1 mm resulted in a higher fusion rate. Therefore, the uncinate process height should be checked preoperatively and used in conjunction with intraoperative assessment when selecting allograft height.
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Affiliation(s)
- Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyangsi, Gyeonggido, Republic of Korea
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Bang MJ, Park S, Kim W, Lee S, Seo JM. Prevalence And Clinical Significance Of Sarcopenia During Treatment Of Abdominal Neuroblastoma In Children. Clin Nutr ESPEN 2023. [DOI: 10.1016/j.clnesp.2022.09.111] [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: 03/28/2023]
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Kim E, Kim K, Park S, Youn J. Real-World Eligibility and Cost-Effectiveness Analysis for Empagliflozin in Patients with Heart Failure. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Lee G, Park S, Lee S, Song K, Kim Y, Chang W, Kim J, Park N, Kim J, Park S, Hwang I, Kim H, Kim I. Bioimpedance Analysis as a Screening Tool in Heart-Transplanted Patients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Park J, Lee H, Kim Y, Choi S, Park S, Park J, Na K. Lung Volume Change Analysis in Lung Transplantation Using a Three-Dimensional Image Analysis System. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Lee CS, Hwang CJ, Lee DH, Cho JH, Park S. Risk Factors and Exit Strategy of Intraoperative Neurophysiological Monitoring Alert During Deformity Correction for Adolescent Idiopathic Scoliosis. Global Spine J 2023:21925682231164344. [PMID: 36916149 DOI: 10.1177/21925682231164344] [Citation(s) in RCA: 2] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVE To elucidate the risk factors of intraoperative neurophysiological monitoring (IONM) alert during deformity correction surgery for adolescent idiopathic scoliosis (AIS) and to describe the outcomes of patients who underwent staged correction surgery due to IONM alert during the initial procedure. METHODS We reviewed 1 024 patients with idiopathic scoliosis who underwent deformity correction and were followed-up for ≥1 year. The pre-and postoperative Cobb angle of the major structural curve, operative time, estimated blood loss (EBL), number of levels fused, event that caused the IONM alert, and intervention required for the recovery of the signal were recorded. Patients who received IONM alerts (alert group) and those who did not (non-alert group) during the operation were compared. RESULTS Compared to the non-alert group, the alert group had a significantly greater preoperative Cobb angle of the major structural curve (P < .001), number of levels fused (P = .003), operative time (P < .001), and EBL (P < .001). The percentage of correction did not significantly differ between the 2 groups (P = .348). Eight patients (.8%) underwent a staged operation because the IONM signal alert hindered correction of the deformity. The percentage of correction of patients who underwent staged operation was 64.9 ± 15.1%, and no permanent neurologic deficits occurred. CONCLUSIONS A greater magnitude of preoperative deformity and surgical extent increases the risk of cord injury identified by IONM alerts during correction of deformities in patients with AIS. However, in patients in whom the IONM alert cannot be recovered or reproduced by proceeding with deformity correction, surgeons can minimize the risk by aborting the initial procedure and completing the correction using staged operations.
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Affiliation(s)
- Choon Sung Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang-Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dong-Ho Lee
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sehan Park
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Chao C, Park S. Abstract No. 116 Evaluating our Initial Experience with Hepatic Hilar Nerve Block for Microwave Ablation of Liver Malignancies: Procedure Time, Efficacy and Duration. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.166] [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: 02/27/2023] Open
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Lee DH, Lee SK, Cho JH, Hwang CJ, Lee CS, Yang JJ, Kim KJ, Park JH, Park S. Efficacy and safety of oblique posterior endplate resection for wider decompression (trumpet-shaped decompression) during anterior cervical discectomy and fusion. J Neurosurg Spine 2023; 38:157-164. [PMID: 36152331 DOI: 10.3171/2022.7.spine22614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/21/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Anterior cervical discectomy and fusion (ACDF) provides a limited workspace, and surgeons often need to access the posterior aspect of the vertebral body to achieve sufficient decompression. Oblique resection of the posterior endplate (trumpet-shaped decompression [TSD]) widens the workspace, enabling removal of lesions behind the vertebral body. This study was conducted to evaluate the efficacy and safety of oblique posterior endplate resection for wider decompression. METHODS In this retrospective study, 227 patients who underwent ACDF for the treatment of cervical myelopathy or radiculopathy caused by spondylosis or ossification of the posterior longitudinal ligament and were followed up for ≥ 1 year were included. Patient characteristics, fusion rates, subsidence, and patient-reported outcome measures, including the neck pain visual analog scale (VAS) score, arm pain VAS score, and Neck Disability Index (NDI), were assessed. Patients who underwent TSD during ACDF (TSD group) and those who underwent surgery without TSD (non-TSD group) were compared. RESULTS Fifty-seven patients (25.1%) were included in the TSD group and 170 patients (74.9%) in the non-TSD group. In the TSD group, 28.2% ± 5.5% of the endplate was resected, and 26.0% ± 6.1% of the region behind the vertebral body could be visualized via the TSD technique. The resection angle was 26.9° ± 5.9°. The fusion rate assessed on the basis of interspinous motion, intragraft bone bridging, and extragraft bone bridging did not significantly differ between the two groups. Furthermore, there were no significant intergroup differences in subsidence. The patient-reported outcome measures at the 1-year follow-up were also not significantly different between the groups. CONCLUSIONS TSD widened the workspace during ACDF, and 26% of the region posterior to the vertebral body could be accessed using this technique. The construct stability was not adversely affected by TSD as demonstrated by the similar fusion and subsidence rates among patients who underwent TSD and those who did not. Therefore, TSD can be safely applied during ACDF when compressive lesions extend behind the vertebral body and are not limited to the disc space, enabling adequate decompression without disrupting the construct stability.
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Affiliation(s)
- Dong-Ho Lee
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Suk-Kyu Lee
- 2Department of Orthopedic Surgery, Asan Bone Hospital, Jeju-si, Republic of Korea
| | - Jae Hwan Cho
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Ju Hwang
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Choon Sung Lee
- 1Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Jun Yang
- 3Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Kook Jong Kim
- 4Department of Orthopedic Surgery, Chungbuk National University Hospital, Chungcheongbuk-do, Cheongju-si, Republic of Korea; and
| | - Jae Hong Park
- 5Department of Orthopedic Surgery, Asan Bone Hospital, Seoul, Republic of Korea
| | - Sehan Park
- 3Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyang-si, Gyeonggi-do, Republic of Korea
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Ban CY, Shin H, Eum S, Yon H, Lee SW, Choi YS, Shin YH, Shin JU, Koyanagi A, Jacob L, Smith L, Min C, Yeniova AÖ, Kim SY, Lee J, Yeo SG, Kwon R, Koo MJ, Fond G, Boyer L, Acharya KP, Kim S, Woo HG, Park S, Shin JI, Rhee SY, Yon DK. 17-year trends of body mass index, overweight, and obesity among adolescents from 2005 to 2021, including the COVID-19 pandemic: a Korean national representative study. Eur Rev Med Pharmacol Sci 2023; 27:1565-1575. [PMID: 36876712 DOI: 10.26355/eurrev_202302_31399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
OBJECTIVE There is a lack of pediatric studies that have analyzed trends in mean body mass index (BMI) and the prevalence of obesity and overweight over a period that includes the mid-stage of the COVID-19 pandemic. Thus, we aimed to investigate trends in BMI, overweight, and obesity among Korean adolescents from 2005 to 2021, including the COVID-19 pandemic. SUBJECTS AND METHODS We used data from the Korea Youth Risk Behavior Web-based Survey (KYRBS), which is nationally representative of South Korea. The study included middle- and high-school students between the ages of 12 and 18. We examined trends in mean BMI and prevalence of obesity and/or overweight during the COVID-19 pandemic and compared these to those of pre-pandemic trends in each subgroup by gender, grade, and residential region. RESULTS Data from 1,111,300 adolescents (mean age: 15.04 years) were analyzed. The estimated weighted mean BMI was 20.48 kg/m2 (95% CI, 20.46-20.51) between 2005 and 2007, and this was 21.61 kg/m2 (95% CI, 21.54-21.68) in 2021. The prevalence of overweight and obesity was 13.1% (95% CI, 12.9-13.3%) between 2005 and 2007 and 23.4% (95% CI, 22.8-24.0%) in 2021. The mean BMI and prevalence of obesity and overweight have gradually increased over the past 17 years; however, the extent of change in mean BMI and in the prevalence of obesity and overweight during the pandemic was distinctly less than before. The 17-year trends in the mean BMI, obesity, and overweight exhibited a considerable rise from 2005 to 2021; however, the slope during the COVID-19 pandemic (2020-2021) was significantly less prominent than in the pre-pandemic (2005-2019). CONCLUSIONS These findings enable us to comprehend long-term trends in the mean BMI of Korean adolescents and further emphasize the need for practical prevention measures against youth obesity and overweight.
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Affiliation(s)
- C Y Ban
- Department of Medicine, Kyung Hee University College of Medicine, Seoul, South Korea.
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Park S, Lee DH, Lee CS, Hwang CJ, Yang JJ, Cho JH. Anterior Decompression and Fusion for the Treatment of Cervical Myelopathy Caused by Ossification of the Posterior Longitudinal Ligament: A Narrative Review. Asian Spine J 2023:asj.2022.0003. [PMID: 36647198 DOI: 10.31616/asj.2022.0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/24/2022] [Indexed: 01/18/2023] Open
Abstract
Occasionally, ossification of the posterior longitudinal ligament (OPLL) causes cord compression, resulting in cervical myelopathy. OPLL differs from other causes of cervical spondylotic myelopathy in several ways, and the surgical strategy should be chosen with OPLL's characteristics in mind. Although both the anterior and posterior approaches are effective surgical methods for the treatment of OPLL cervical myelopathy, they each have their own set of benefits and drawbacks. Anterior decompression and fusion (ADF) may improve neurological recovery, restore lordosis, and prevent OPLL mass progression. The benefits can be seen in patients with a high canal occupying ratio or kyphotic alignment. We discussed the benefits, limitations, indications, and surgical techniques of ADF for the treatment of OPLL-induced cervical myelopathy in this narrative.
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Affiliation(s)
- Sehan Park
- Department of Orthopaedic Surgery, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Dong-Ho Lee
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Choon Sung Lee
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang-Ju Hwang
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Jun Yang
- Department of Orthopaedic Surgery, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Jae Hwan Cho
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Jung J, Kang S, Lee S, Park H, Kim J, Kim SK, Park S, Lim YJ, Kim E, Lim S, Chang E, Bae S, Kim M, Chong Y, Lee SO, Choi SH, Kim Y, Park MS, Kim SH. Risk of transmission of COVID-19 from healthcare workers returning to work after a 5-day isolation, and kinetics of shedding of viable SARS-CoV-2 variant B.1.1.529 (Omicron). J Hosp Infect 2023; 131:228-233. [PMID: 36460176 PMCID: PMC9705265 DOI: 10.1016/j.jhin.2022.11.012] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/16/2022] [Accepted: 11/19/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND There have been limited data on the risk of onward transmission from individuals with Omicron variant infections who return to work after a 5-day isolation. AIM To evaluate the risk of transmission from healthcare workers (HCWs) with Omicron variant who returned to work after a 5-day isolation and the viable-virus shedding kinetics. METHODS This investigation was performed in a tertiary care hospital, Seoul, South Korea. In a secondary transmission study, we retrospectively reviewed the data of HCWs confirmed as COVID-19 from March 14th to April 3rd, 2022 in units with five or more COVID-19-infected HCWs per week. In the viral shedding kinetics study, HCWs with Omicron variant infection who agreed with daily saliva sampling were enrolled between February and March, 2022. FINDINGS Of the 248 HCWs who were diagnosed with COVID-19 within 5 days of the return of an infected HCW, 18 (7%) had contact with the returned HCW within 1-5 days after their return. Of these, nine (4%) had an epidemiologic link other than with the returning HCW, and nine (4%) had contact with the returning HCW, without any other epidemiologic link. In the study of the kinetics of virus shedding (N = 32), the median time from symptom onset to negative conversion of viable virus was four days (95% confidence interval: 3-5). CONCLUSION Our data suggest that the residual risk of virus transmission after 5 days of isolation following diagnosis or symptom onset is low.
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Affiliation(s)
- J. Jung
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea,Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - S.W. Kang
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - S. Lee
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - H. Park
- Department of Microbiology, Institute for Viral Diseases, Vaccine Innovation Center, College of Medicine, Korea University, Seoul, South Korea
| | - J.Y. Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - S.-K. Kim
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - S. Park
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - Y.-J. Lim
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - E.O. Kim
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - S.Y. Lim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - E. Chang
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - S. Bae
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - M.J. Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Y.P. Chong
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - S.-O. Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - S.-H. Choi
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Y.S. Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - M.-S. Park
- Department of Microbiology, Institute for Viral Diseases, Vaccine Innovation Center, College of Medicine, Korea University, Seoul, South Korea,Corresponding author. Address: Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro, 43-gil, Songpa-gu, Seoul, South Korea. Tel.: +82 2 3010-3305
| | - S.-H. Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea,Office for Infection Control, Asan Medical Center, Seoul, South Korea,Corresponding author. Address: Department of Microbiology, Institute for Viral Diseases, Vaccine Innovation Center, College of Medicine, 73 Goryeodae-ro, Seongbuk-gu, Seoul, 02841, South Korea. Tel.: +82 2 2286-1312
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Amamoto R, Shimamoto K, Suwa T, Park S, Matsumoto H, Shimizu K, Katto M, Makino H, Matsubara S, Aoyagi Y. Relationships between dietary diversity and gut microbial diversity in the elderly. Benef Microbes 2022; 13:453-464. [PMID: 36377581 DOI: 10.3920/bm2022.0054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Diet is considered as a major driver of gut microbiota composition. However, little is known about the relationship between overall dietary balance and gut microbiota, especially in the elderly. Here, using the Quantitative Index for Dietary Diversity (QUANTIDD), we analysed the relationships between dietary diversity and gut microbiota diversity in 445 Japanese subjects aged 65-90 years. We also examined the effect of age by comparing the young-old group aged 65 to 74 years (<75 years group; n=246) and the old-old group aged 75 years and older (≥75 years group; n=199). QUANTIDD showed significant positive relationships with Pielou's evenness and Shannon indices, two α-diversity indices related to the uniformity of species distribution. This suggests that a more diverse diet is associated with a more uniform abundance of various bacterial groups, rather than a greater variety of gut bacteria. QUANTIDD also showed significant positive associations with the abundance of Anaerostipes, Eubacterium eligens group, and Eubacterium ventriosum group, which produce short-chain fatty acids (SCFAs) and are beneficial to health. Negative association was found with the abundance of Ruminococcus gnavus group, which produces inflammatory polysaccharides. Positive associations between QUANTIDD and α-diversity indices or the abundance of specific bacterial groups were identified among all subjects and in the <75 years group, but not in the ≥75 years group. Our results suggest that dietary diversity contributes to the diversity of the gut microbiota and increases the abundance of SCFAs-producing bacteria, but only up to a certain age. These findings help to understand the complex relationship between diet and gut microbiota, and provide hints for specific dietary interventions to promote beneficial gut microbiota in the elderly.
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Affiliation(s)
- R Amamoto
- Food Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - K Shimamoto
- Food Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - T Suwa
- Food Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - S Park
- Exercise Sciences Research Group, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakaecho, Itabashi-ku, Tokyo 173-0015, Japan
| | - H Matsumoto
- Microbiological Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - K Shimizu
- Basic Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - M Katto
- Basic Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - H Makino
- Food Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - S Matsubara
- Food Research Department, Yakult Central Institute, 5-11 Izumi, Kunitachi-shi, Tokyo 186-8650, Japan
| | - Y Aoyagi
- Exercise Sciences Research Group, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakaecho, Itabashi-ku, Tokyo 173-0015, Japan
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Park S, Kim JK, Chang MC, Park JJ, Yang JJ, Lee GW. Assessment of Fusion After Anterior Cervical Discectomy and Fusion Using Convolutional Neural Network Algorithm. Spine (Phila Pa 1976) 2022; 47:1645-1650. [PMID: 35905310 DOI: 10.1097/brs.0000000000004439] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/28/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND A convolutional neural network (CNN) is a deep learning (DL) model specialized for image processing, analysis, and classification. OBJECTIVE In this study, we evaluated whether a CNN model using lateral cervical spine radiographs as input data can help assess fusion after anterior cervical discectomy and fusion (ACDF). STUDY DESIGN Diagnostic imaging study using DL. PATIENT SAMPLE We included 187 patients who underwent ACDF and fusion assessment with postoperative one-year computed tomography and neutral and dynamic lateral cervical spine radiographs. OUTCOME MEASURES The performance of the CNN-based DL algorithm was evaluated in terms of accuracy and area under the curve. MATERIALS AND METHODS Fusion or nonunion was confirmed by cervical spine computed tomography. Among the 187 patients, 69.5% (130 patients) were randomly selected as the training set, and the remaining 30.5% (57 patients) were assigned to the validation set to evaluate model performance. Radiographs of the cervical spine were used as input images to develop a CNN-based DL algorithm. The CNN algorithm used three radiographs (neutral, flexion, and extension) per patient and showed the diagnostic results as fusion (0) or nonunion (1) for each radiograph. By combining the results of the three radiographs, the final decision for a patient was determined to be fusion (fusion ≥2) or nonunion (fusion ≤1). By combining the results of the three radiographs, the final decision for a patient was determined as fusion (fusion ≥2) or nonunion (nonunion ≤1). RESULTS The CNN-based DL model demonstrated an accuracy of 89.5% and an area under the curve of 0.889 (95% confidence interval, 0.793-0.984). CONCLUSION The CNN algorithm for fusion assessment after ACDF trained using lateral cervical radiographs showed a relatively high diagnostic accuracy of 89.5% and is expected to be a useful aid in detecting pseudarthrosis.
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Affiliation(s)
- Sehan Park
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyang-si, Gyeonggi-do Province, Republic of Korea
| | - Jeoung Kun Kim
- Department of Business Administration, School of Business, Yeungnam University, Gyeongsan-si, Gyeonggi-do Province, Republic of Korea
| | - Min Cheol Chang
- Department of Physical Medicine and Rehabilitation, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Gyeongsang Province, Republic of Korea
| | - Jeong Jin Park
- Department of Orthopedic Surgery, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Gyeongsang Province, Republic of Korea
| | - Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyang-si, Gyeonggi-do Province, Republic of Korea
| | - Gun Woo Lee
- Department of Physical Medicine and Rehabilitation, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Gyeongsang Province, Republic of Korea
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Park S, Park JW, Park JH, Lee CS, Lee DH, Hwang CJ, Yang JJ, Cho JH. Factors affecting the prognosis of recovery of motor power and ambulatory function after surgery for metastatic epidural spinal cord compression. Neurosurg Focus 2022; 53:E11. [PMID: 36455275 DOI: 10.3171/2022.9.focus22403] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/20/2022] [Indexed: 12/04/2022]
Abstract
OBJECTIVE Metastatic epidural spinal cord compression (MESCC) causes neurological deficits that may hinder ambulation. Understanding the prognostic factors associated with increased neurological recovery and regaining ambulatory functions is important for surgical planning in MESCC patients with neurological deficits. The present study was conducted to elucidate prognostic factors of neurological recovery in MESCC patients. METHODS A total of 192 patients who had surgery for MESCC due to preoperative neurological deficits were reviewed. A motor recovery rate ≥ 50% and ambulatory function restoration were defined as the primary favorable endpoints. Factors associated with a motor recovery rate ≥ 50%, regaining ambulatory function, and patient survival were analyzed. RESULTS About one-half (48.4%) of the patients had a motor recovery rate ≥ 50%, and 24.4% of patients who were not able to walk due to MESCC before the surgery were able to walk after the operation. The factors "involvement of the thoracic spine" (p = 0.015) and "delayed operation" (p = 0.041) were associated with poor neurological recovery. Low preoperative muscle function grade was associated with a low likelihood of regaining ambulatory functions (p = 0.002). Furthermore, performing the operation ≥ 72 hours after the onset of the neurological deficit significantly decreased the likelihood of regaining ambulatory functions (p = 0.020). Postoperative ambulatory function significantly improved patient survival (p = 0.048). CONCLUSIONS Delayed operation and the involvement of the thoracic spine were poor prognostic factors for neurological recovery after MESCC surgery. Furthermore, a more severe preoperative neurological deficit was associated with a lesser likelihood of regaining ambulatory functions postoperatively. Earlier detection of motor weaknesses and expeditious surgical interventions are necessary, not only to improve patient functional status and quality of life but also to enhance survival.
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Affiliation(s)
- Sehan Park
- 1Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyang-si
| | - Jae Woo Park
- 2Department of Orthopedic Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung-si; and
| | | | - Choon Sung Lee
- 4Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dong-Ho Lee
- 4Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Ju Hwang
- 4Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Jun Yang
- 1Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Goyang-si
| | - Jae Hwan Cho
- 4Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Lee E, Kim J, Bae Y, Park S, Park J, Che L, Oh S. 526 The involvement of gremlin 1 in particulate matter-induced melanogenesis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.541] [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: 11/19/2022]
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Park J, Lim D, Park J, Mok J, Park J, Park S. 606 Identification of first-in-class HSP47 inhibitor and its suppressive role in hypertrophic scars and keloids. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.623] [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: 11/19/2022]
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