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Kim HJ, Min E, Yim SH, Choi MC, Kim HW, Yang J, Kim BS, Huh KH, Kim MS, Lee J. Clinical relevance of the living kidney donor profile index in Korean kidney transplant recipients. Clin Transplant 2024; 38:e15178. [PMID: 37922208 DOI: 10.1111/ctr.15178] [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: 03/27/2023] [Revised: 10/04/2023] [Accepted: 10/23/2023] [Indexed: 11/05/2023]
Abstract
BACKGROUND The Living Kidney Donor Profile Index (LKDPI) was developed in the United States to predict graft outcomes based on donor characteristics. However, there are significant differences in donor demographics, access to transplantation, proportion of ABO incompatibility, and posttransplant mortality in Asian countries compared with the United States. METHODS We evaluated the clinical relevance of the LKDPI score in a Korean kidney transplant cohort by analyzing 1860 patients who underwent kidney transplantation between 2000 and 2019. Patients were divided into three groups according to LKDPI score: <0, 1-19.9, and ≥20. RESULTS During a median follow-up of 119 months, 232 recipients (12.5%) experienced death-censored graft loss, and 98 recipients (5.3%) died. High LKDPI scores were significantly associated with increased risk of death-censored graft loss independent of recipient characteristics (LKDPI 1-19.9: HR 1.389, 95% CI 1.036-1.863; LKDPI ≥20: HR 2.121, 95% CI 1.50-2.998). High LKDPI score was also significantly associated with increased risk of biopsy-proven acute rejection and impaired graft renal function. By contrast, overall patient survival rates were comparable among the LKDPI groups. CONCLUSION High LKDPI scores were associated with an increased risk of death-censored graft loss, biopsy-proven acute rejection, and impaired graft renal function among a Korean kidney transplant cohort.
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Affiliation(s)
- Hyun Jeong Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eunki Min
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Hyuk Yim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Mun Chae Choi
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyung Woo Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jaeseok Yang
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Beom Seok Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyu Ha Huh
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Myoug Soo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Juhan Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
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Lee J, Koh HH, Min E, Yim SH, Choi M, Kim DG, Lee JG, Joo DJ. Clinical impact of myosteatosis in liver transplant recipients. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-4418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Juhan Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Hwa-Hee Koh
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Eunki Min
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Hyuk Yim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Munchae Choi
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Deok Gie Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Geun Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Dong Jin Joo
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
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Kang MY, Lee J, Kang MY, Min E, Yim SH, Choi M, Kim HJ, Huh KH, Kim MS. Clinical impact of early blood transfusion after kidney transplantation. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-4402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Min Yu Kang
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Juhan Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Min Yu Kang
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Eunki Min
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Hyuk Yim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Munchae Choi
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Jeong Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Kyu Ha Huh
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Myoung Soo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
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Sung KH, Min E, Chung CY, Jo BC, Park MS, Lee K. Measurements of surgeons' exposure to ionizing radiation dose: comparison of conventional and mini C-arm fluoroscopy. J Hand Surg Eur Vol 2016; 41:340-5. [PMID: 26115681 DOI: 10.1177/1753193415590388] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 01/20/2015] [Accepted: 05/12/2015] [Indexed: 02/03/2023]
Abstract
This study was performed to measure the equivalent scattered radiation dose delivered to susceptible organs while simulating orthopaedic surgery using conventional and mini C-arm fluoroscopy. In addition, shielding effects on the thyroid, thymus, and gonad, and the direct exposure delivered to the patient's hands were also compared. A conventional and mini C-arms were installed in an operating room, and a hand and an operator phantom were used to simulate a patient's hand and a surgeon. Photoluminescence dosimeters were used to measure the equivalent dose by scattered radiation arriving at the thyroid, thymus, and gonad on a whole-body phantom in the position of the surgeon. Equivalent scattered radiation doses were measured in four groups: (1) unshielded conventional C-arm group; (2) unshielded mini C-arm group; (3) lead-shielded conventional C-arm group; and (4) lead-shielded mini C-arm group. Equivalent scattered radiation doses to the unshielded group were significantly lower in the mini C-arm group than those in the conventional C-arm group for all organs. The gonad in the lead-shielded conventional C-arm group showed the highest equivalent dose among operator-susceptible organs, and radiation dose was reduced by approximately 96% compared with that in the unshielded group. Scattered radiation was not detected in any susceptible organ in the lead-shielded mini C-arm group. The direct radiation dose to the hand phantom measured from the mini C-arm was significantly lower than that measured from the conventional C-arm. The results show that the equivalent scattered radiation dose to the surgeon's susceptible organs and the direct radiation dose to a patient's hand can be decreased significantly by using a mini C-arm rather than a conventional C-arm. However, protective lead garments, such as a thyroid shield and apron, should be applied to minimize radiation exposure to susceptible organs, even during use of mini C-arm fluoroscopy.
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Affiliation(s)
- K H Sung
- Department of Orthopaedic Surgery, Myongji Hospital, Kyungki, Korea
| | - E Min
- Department of IT Convergence, Korea University, Seoul, Korea
| | - C Y Chung
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Kyungki, Korea
| | - B C Jo
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Kyungki, Korea
| | - M S Park
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Kyungki, Korea
| | - K Lee
- School of Biomedical Engineering, Korea University, Seoul, Korea
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Chandler JD, Min E, Huang J, Nichols DP, Day BJ. Nebulized thiocyanate improves lung infection outcomes in mice. Br J Pharmacol 2015; 169:1166-77. [PMID: 23586967 DOI: 10.1111/bph.12206] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 03/14/2013] [Accepted: 03/28/2013] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND PURPOSE Nebulized saline solutions are used in the treatment of multiple pulmonary diseases including cystic fibrosis (CF), asthma and chronic obstructive pulmonary disease (COPD). The benefits of these therapies include improved lung function, phlegm clearance and fewer lung infections. The thiocyanate anion (SCN) is a normal component of the airway epithelial lining fluid (ELF) secreted by pulmonary epithelia with antioxidant and host defence functions. We sought to test if SCN could be nebulized to combat lung infection by bolstering innate immune defence and antioxidant capacity. EXPERIMENTAL APPROACH We established an effective antioxidant concentration of SCN in vitro using a bronchiolar epithelial cell line. We then developed a nebulization method of SCN in mice that increased ELF SCN above this concentration up to 12 h and used this method in a prolonged Pseudomonas aeruginosa infection model to test if increasing SCN improved host defence and infection outcomes. KEY RESULTS SCN protected against cytotoxicity in vitro from acute and sustained exposure to inflammation-associated oxidative stress. Nebulized SCN effectively reduced bacterial load, infection-mediated morbidity and airway inflammation in mice infected with P. aeruginosa. SCN also sustained adaptive increases in reduced GSH in infected mice. CONCLUSIONS AND IMPLICATIONS SCN is a dually protective molecule able to both enhance host defence and decrease tissue injury and inflammation as an antioxidant. Nebulized SCN could be developed to combat lung infections and inflammatory lung disease.
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Affiliation(s)
- J D Chandler
- Department of Medicine, National Jewish Health, Denver, CO 80206, USA
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Park MS, Lee KM, Lee B, Min E, Kim Y, Jeon S, Huh Y, Lee K. Comparison of operator radiation exposure between C-arm and O-arm fluoroscopy for orthopaedic surgery. Radiat Prot Dosimetry 2012; 148:431-438. [PMID: 21525041 DOI: 10.1093/rpd/ncr149] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The O-arm system has recently been introduced and has the capability of combined two-dimensional (2-D) fluoroscopy imaging and three-dimensional computed tomography imaging. In this study, an orthopaedic surgical procedure using C-arm and O-arm systems in their 2-D fluoroscopy modes was simulated and the radiation doses to susceptible organs to which operators can be exposed were investigated. The experiments were performed in four configurations of the location of the X-ray source and detector. Shielding effects on the thyroid surface and the direct exposure delivered to the surgeon's hands were also compared. The results obtained show that the O-arm delivered higher doses to the sensitive organs of the operator in all configurations. The thyroid shield cut-off 89 % of the dose in the posteroanterior configuration of both imaging systems. Thus, the operators need to pay more attention to managing radiation exposure, especially when using the O-arm system.
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Affiliation(s)
- Moon Seok Park
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Sungnam, Korea
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de Baar MR, Thyagaraja A, Hogeweij GMD, Knight PJ, Min E. Global plasma turbulence simulations of q = 3 sawtoothlike events in the RTP tokamak. Phys Rev Lett 2005; 94:035002. [PMID: 15698275 DOI: 10.1103/physrevlett.94.035002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2004] [Indexed: 05/24/2023]
Abstract
A two-fluid computer model of electromagnetic tokamak turbulence, CUTIE, is used to study the dynamic structure and turbulent transport in the Rijnhuizen Tokamak Project tokamak. A discharge with dominant, off-axis electron cyclotron heating is the main focus of the simulations which were extended over several resistive diffusion times. CUTIE reproduces the turbulent transport and MHD phenomena of the experiment. The noninductive components of the current density profile, viz., the dynamo current and the bootstrap current, are identified as key players in the turbulent transport and its suppression and in off-axis MHD events.
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Affiliation(s)
- M R de Baar
- FOM Institute for Plasma physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, P.O. Box 1207, 3430 BE Nieuwegein, The Netherlands
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Westerhof E, Polman R, Hogeweij G, Lok J, Min E, Oomens A, Schüller F. Erratum to “Further analysis of the electron cyclotron current drive experiments on RTP”. Fusion Engineering and Design 2001. [DOI: 10.1016/s0920-3796(01)00178-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Westerhof E, Polman R, Hogeweij G, Lok J, Min E, Oomens A, Schüller F. Further analysis of the electron cyclotron current drive experiments on RTP. Fusion Engineering and Design 2001. [DOI: 10.1016/s0920-3796(00)00499-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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