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Kim SK, Shousha R, Yang SM, Hu Q, Hahn SH, Jalalvand A, Park JK, Logan NC, Nelson AO, Na YS, Nazikian R, Wilcox R, Hong R, Rhodes T, Paz-Soldan C, Jeon YM, Kim MW, Ko WH, Lee JH, Battey A, Yu G, Bortolon A, Snipes J, Kolemen E. Highest fusion performance without harmful edge energy bursts in tokamak. Nat Commun 2024; 15:3990. [PMID: 38734685 PMCID: PMC11088687 DOI: 10.1038/s41467-024-48415-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
The path of tokamak fusion and International thermonuclear experimental reactor (ITER) is maintaining high-performance plasma to produce sufficient fusion power. This effort is hindered by the transient energy burst arising from the instabilities at the boundary of plasmas. Conventional 3D magnetic perturbations used to suppress these instabilities often degrade fusion performance and increase the risk of other instabilities. This study presents an innovative 3D field optimization approach that leverages machine learning and real-time adaptability to overcome these challenges. Implemented in the DIII-D and KSTAR tokamaks, this method has consistently achieved reactor-relevant core confinement and the highest fusion performance without triggering damaging bursts. This is enabled by advances in the physics understanding of self-organized transport in the plasma edge and machine learning techniques to optimize the 3D field spectrum. The success of automated, real-time adaptive control of such complex systems paves the way for maximizing fusion efficiency in ITER and beyond while minimizing damage to device components.
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Affiliation(s)
- S K Kim
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA
| | - R Shousha
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA
| | - S M Yang
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA
| | - Q Hu
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA
| | - S H Hahn
- Korea Institute of Fusion Energy, Daejeon, South Korea
| | | | - J-K Park
- Seoul National University, Seoul, South Korea
| | - N C Logan
- Columbia University, New York, NY, USA
| | | | - Y-S Na
- Seoul National University, Seoul, South Korea
| | | | - R Wilcox
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - R Hong
- University of California Los Angeles, Los Angeles, CA, USA
| | - T Rhodes
- University of California Los Angeles, Los Angeles, CA, USA
| | | | - Y M Jeon
- Korea Institute of Fusion Energy, Daejeon, South Korea
| | - M W Kim
- Korea Institute of Fusion Energy, Daejeon, South Korea
| | - W H Ko
- Korea Institute of Fusion Energy, Daejeon, South Korea
| | - J H Lee
- Korea Institute of Fusion Energy, Daejeon, South Korea
| | - A Battey
- Columbia University, New York, NY, USA
| | - G Yu
- University of California Davis, Davis, CA, USA
| | - A Bortolon
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA
| | - J Snipes
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA
| | - E Kolemen
- Princeton Plasma Physics Laboratory, Princeton, NJ, USA.
- Princeton University, Princeton, NJ, USA.
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2
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Adhikari G, Carlin N, Choi JJ, Choi S, Ezeribe AC, França LE, Ha C, Hahn IS, Hollick SJ, Jeon EJ, Jo JH, Joo HW, Kang WG, Kauer M, Kim BH, Kim HJ, Kim J, Kim KW, Kim SH, Kim SK, Kim WK, Kim YD, Kim YH, Ko YJ, Lee DH, Lee EK, Lee H, Lee HS, Lee HY, Lee IS, Lee J, Lee JY, Lee MH, Lee SH, Lee SM, Lee YJ, Leonard DS, Luan NT, Manzato BB, Maruyama RH, Neal RJ, Nikkel JA, Olsen SL, Park BJ, Park HK, Park HS, Park KS, Park SD, Pitta RLC, Prihtiadi H, Ra SJ, Rott C, Shin KA, Cavalcante DFFS, Scarff A, Spooner NJC, Thompson WG, Yang L, Yu GH. Search for Boosted Dark Matter in COSINE-100. Phys Rev Lett 2023; 131:201802. [PMID: 38039466 DOI: 10.1103/physrevlett.131.201802] [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: 06/01/2023] [Accepted: 10/30/2023] [Indexed: 12/03/2023]
Abstract
We search for energetic electron recoil signals induced by boosted dark matter (BDM) from the galactic center using the COSINE-100 array of NaI(Tl) crystal detectors at the Yangyang Underground Laboratory. The signal would be an excess of events with energies above 4 MeV over the well-understood background. Because no excess of events are observed in a 97.7 kg·yr exposure, we set limits on BDM interactions under a variety of hypotheses. Notably, we explored the dark photon parameter space, leading to competitive limits compared to direct dark photon search experiments, particularly for dark photon masses below 4 MeV and considering the invisible decay mode. Furthermore, by comparing our results with a previous BDM search conducted by the Super-Kamionkande experiment, we found that the COSINE-100 detector has advantages in searching for low-mass dark matter. This analysis demonstrates the potential of the COSINE-100 detector to search for MeV electron recoil signals produced by the dark sector particle interactions.
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Affiliation(s)
- G Adhikari
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - N Carlin
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - J J Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - A C Ezeribe
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - L E França
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - C Ha
- Department of Physics, Chung-Ang University, Seoul 06973, Republic of Korea
| | - I S Hahn
- Department of Science Education, Ewha Womans University, Seoul 03760, Republic of Korea
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - S J Hollick
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - E J Jeon
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J H Jo
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - H W Joo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - W G Kang
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - B H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - H J Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - J Kim
- Department of Physics, Chung-Ang University, Seoul 06973, Republic of Korea
| | - K W Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S K Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - W K Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Y D Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - Y H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Y J Ko
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - D H Lee
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - E K Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H S Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H Y Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - I S Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Y Lee
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - M H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - S H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - S M Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Y J Lee
- Department of Physics, Chung-Ang University, Seoul 06973, Republic of Korea
| | - D S Leonard
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - N T Luan
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - B B Manzato
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - R H Maruyama
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - R J Neal
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - J A Nikkel
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - S L Olsen
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - B J Park
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H K Park
- Department of Accelerator Science, Korea University, Sejong 30019, Republic of Korea
| | - H S Park
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - K S Park
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S D Park
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - R L C Pitta
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - H Prihtiadi
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S J Ra
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112, USA
| | - K A Shin
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - D F F S Cavalcante
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - A Scarff
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - N J C Spooner
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - W G Thompson
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - L Yang
- Department of Physics, University of California San Diego, La Jolla, California 92093, USA
| | - G H Yu
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Hong YW, Jang GI, Kim SY, Choi JY, Kim BJ, Shin DY, Kang JK, Kim SK, Cho BC, Hwang CY. Roseovarius pelagicus sp. nov., a facultatively anaerobic bacterium with potential for degrading polypropylene, isolated from Arctic seawater. Int J Syst Evol Microbiol 2023; 73. [PMID: 37561014 DOI: 10.1099/ijsem.0.005999] [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] [Indexed: 08/11/2023] Open
Abstract
A Gram-stain-negative, facultatively anaerobic, non-motile, rod-shaped bacterial strain, designated HL-MP18T, was isolated from Arctic seawater after a prolonged incubation employing polypropylene as the sole carbon source. Phylogenetic analyses of the 16S rRNA gene sequence revealed that strain HL-MP18T was affiliated to the genus Roseovarius with close relatives Roseovarius carneus LXJ103T (96.8 %) and Roseovarius litorisediminis KCTC 32327T (96.5 %). The complete genome sequence of strain HL-MP18T comprised a circular chromosome of 3.86 Mbp and two circular plasmids of 0.17 and 0.24 Mbp. Genomic comparisons based on average nucleotide identity and digital DNA-DNA hybridization showed that strain HL-MP18T was consistently discriminated from its closely related taxa in the genus Roseovarius. Strain HL-MP18T showed optimal growth at 25 °C, pH 7.0 and 2.5 % (w/v) sea salts. The major cellular fatty acids were C18 : 1 ω6c and/or C18 : 1 ω7c (49.6 %), C19 : 0 cyclo ω8c (13.5 %), and C16 : 0 (12.8 %). The major respiratory quinone was ubiquinone-10. The polar lipids consisted of phosphatidylcholine, phosphatidylglycerol, an unidentified aminolipid and three unidentified lipids. The genomic DNA G+C content of the strain was 59.2 mol%. The phylogenetic, genomic, phenotypic and chemotaxonomic results indicate that strain HL-MP18T is distinguishable from the recognized species of the genus Roseovarius. Therefore, we propose that strain HL-MP18T represents a novel species belonging to the genus Roseovarius, for which the name Roseovarius pelagicus sp. nov. is proposed. The type strain is HL-MP18T (=KCCM 90405T=JCM 35639T).
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Affiliation(s)
- Yeon Woo Hong
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Gwang Il Jang
- Aquatic Disease Control Division, National Fishery Products Quality Management Service, Busan 46083, Republic of Korea
| | - Soo Yoon Kim
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Jy Young Choi
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Bok Jin Kim
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong Young Shin
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Kyeong Kang
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Byung Cheol Cho
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
- Saemangeum Environmental Research Center, Kunsan National University, Kunsan 54150, Republic of Korea
| | - Chung Yeon Hwang
- Microbial Oceanography Laboratory, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
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Kim SK, Kim JS, Kim SY, Song NS, La HS, Yang EJ. Arctic Ocean sediments as important current and future sinks for marine microplastics missing in the global microplastic budget. Sci Adv 2023; 9:eadd2348. [PMID: 37406127 DOI: 10.1126/sciadv.add2348] [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] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 05/31/2023] [Indexed: 07/07/2023]
Abstract
To better understand unexpectedly low plastic loads at the ocean's surface compared with inputs, unidentified sinks must be located. Here, we present the microplastic (MP) budget for multi-compartments in the western Arctic Ocean (WAO) and demonstrate that Arctic sediments serve as important current and future sinks for MPs missing from the global budget. We identified an increase of 3% year-1 in MP deposition from sediment core observations. Relatively elevated MP abundances were found in seawater and surface sediments around the summer sea ice retreat region, implying enhanced MP accumulation and deposition facilitated by the ice barrier. We estimate 15.7 ± 2.30 × 1016 N and 0.21 ± 0.14 MT as total MP loads in the WAO with 90% (by mass) buried in the post-1930 sediments, which exceeds the global average of the current marine MP load. The slower increase in plastic burial versus production implies a lag in plastic delivery to the Arctic, indicating more pollution in the future.
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Affiliation(s)
- Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
- Yellow Sea Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Ji-Su Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - So-Young Kim
- Division of Ocean Sciences, Korea Polar Research Institute, Songdomirae-ro, Yeonsu-gu, Incheon 21990, Republic of Korea
| | - Nan-Seon Song
- Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Hyoung Sul La
- Division of Ocean Sciences, Korea Polar Research Institute, Songdomirae-ro, Yeonsu-gu, Incheon 21990, Republic of Korea
| | - Eun Jin Yang
- Division of Ocean Sciences, Korea Polar Research Institute, Songdomirae-ro, Yeonsu-gu, Incheon 21990, Republic of Korea
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5
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Park B, Kim SK, Joo S, Kim JS, Jo K, Song NS, Im J, Lee HJ, Kim SW, Lee SB, Kim S, Lee Y, Kim BY, Kim TW. Microplastics in large marine animals stranded in the Republic of Korea. Mar Pollut Bull 2023; 189:114734. [PMID: 36842279 DOI: 10.1016/j.marpolbul.2023.114734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Microplastics (MPs) are found in every ocean and are frequently ingested by marine animals. This study analyzed MPs in the stomachs and intestines of 12 large marine animals comprising one fin whale (Balaenoptera physalus), seven finless porpoises (Neophocaena asiaeorientalis), two loggerhead turtles (Caretta caretta), one Indo-Pacific bottlenose dolphin (Tursiops aduncus), and one common dolphin (Delphinus delphis) that were stranded off the Republic of Korea between 2019 and 2021. MPs were detected with a mean abundance of 3.42 ± 3.2 items/g and were predominantly of transparent-white, fragment-shaped polypropylene smaller than 200 μm. The abundance of MPs found did not correlate with the biological information (maturity, body length) of the finless porpoises and there were no significant differences in the abundance of MPs between the stomachs and intestines. These results cannot accurately assess the impact of MPs on large marine animals, so further studies are necessary to understand how MPs can potentially affect them.
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Affiliation(s)
- Byeongyong Park
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea; Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, Academy-ro 119, Yeonsu-gu, Incheon 22012, Republic of Korea; Yellow Sea Institute, Incheon National University, Academy-ro 119, Yeonsu-gu, Incheon 22012, Republic of Korea.
| | - Soobin Joo
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea; Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Ji-Su Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Kyungsik Jo
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea; Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Nan-Seon Song
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Jibin Im
- Korean Environmental Technology Consulting Hotline, Republic of Korea
| | - Hee-Jee Lee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Sang Wha Kim
- Department of Microbiology and Immunology, Institute of Endemic Disease, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Sung Bin Lee
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Sunmin Kim
- Department of Parasitology, College of Medicine, Chungbuk National University, Republic of Korea
| | - Youngran Lee
- Department of Companion Animals, Osan University, Republic of Korea
| | - Byung-Yeob Kim
- Department of Marine Industry and Maritime Policy, Jeju National University, Jeju City 63243, Republic of Korea
| | - Tae Won Kim
- Program in Biomedical Science and Engineering, Inha University, Incheon 22212, Republic of Korea; Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea.
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Kim JI, Kim SK, Kim KE, Kim YR, Kim EJ, An BK. Effects of Lupin Kernel (Lupinus angustifolius) and Faba Bean (Vicia faba) on Growth Performance and Hepatic Fatty Acid Profiles in Broiler Chicks. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2022-1675] [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] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- JI Kim
- Konkuk University, Republic of Korea
| | - SK Kim
- Konkuk University, Republic of Korea
| | - KE Kim
- Nonghyup Feed, Republic of Korea
| | - YR Kim
- Yonam College, Republic of Korea
| | - EJ Kim
- Yonam College, Republic of Korea
| | - BK An
- Konkuk University, Republic of Korea
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7
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Kim BK, Hwang JH, Kim SK. Modeling of microplastics discharged from a station in Marian Cove, West Antarctica. Mar Pollut Bull 2023; 186:114441. [PMID: 36473247 DOI: 10.1016/j.marpolbul.2022.114441] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/22/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Conspicuous amounts of microplastics have been discovered in bays near Antarctic research stations, including several types of microplastics in the water columns of Marian Cove. This study proposes an efficient operating strategy for a wastewater treatment plant to mitigate microplastic accumulations in the bay by assessing the transport and accumulation of microplastics using numerical simulations. Hence, microplastic particles were classified into falling and rising particles to find a mechanism for their vertical migration. The results showed that the characteristics of the vertical migration of the particles and flow conditions critically determined their traveling distance and accumulation location. Further, the amount of microplastics accumulated in the cove depended on the release time of the wastewater during the tidal cycle. Wastewater treatment plants need to be improved to reduce microplastics. However, it is necessary to adjust the location and schedule for releasing them into Marian Cove.
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Affiliation(s)
- Bo-Kyung Kim
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
| | - Jin Hwan Hwang
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea; Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeounsu-gu, Incheon 22012, Republic of Korea; Yellow Sea Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22021, Republic of Korea
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8
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Lee HK, Yang YS, Kim SK, Vongxay V, Lee YM. Early adolescents’ sexual and reproductive health literacy in Lao PDR. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac130.039] [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: 11/13/2022] Open
Abstract
Abstract
Background
Sexual and reproductive health literacy (SRHL) refers to the ability to access, understand, appraise, and apply information for decision-making related to sexual and reproductive health. The low level of SRHL in adolescents increases their sexually risky behaviors and endangers sexual health. Although early adolescence is a critical development period for forming initial views on sexuality and is often a time for attempting risky behaviors, studies on SRHL for early adolescents are fairly limited in Las PDR. As an initial step for the development of a global health project between Lao PDR and South Korea, this study assessed the level of SRHL and the differences in gender among early adolescents in Lao PDR.
Methods
Participants were 235 students conveniently recruited from one junior high school each in two provinces in Lao PDR. SRHL was measured using the 39-item Teen Pregnancy Health Literacy scale consisting of 4 subscales of finding, understanding, appraisal, and application. The scores were classified into inadequate, problematic, sufficient, and excellent using the SRHL index formula. The mean differences in gender were compared using t-test.
Results
The mean of the SRHL scores of the participants was 19.07 (±10.57). The mean score was significantly lower for girls, at 17.67 (±11.22) than for boys, at 21.37 (±9.05) (p = .006). Significant differences were further identified in all four sub-domains of SRHL: finding (p = .025), understanding (p = .005), appraisal (p = .041), and application (p = .029). The majority of participants (91.7%) were categorized as having an ‘inadequate’ or ‘problematic’ level of SRHL.
Conclusions
The level of SRHL among most early adolescents was found to be inadequate. The level of SRHL among girls was much lower than that among boys. The findings suggest a gender-specific approach to developing health education programs to improve SRHL among early adolescents and prevent future sexually risky behaviors in Lao PDR.
Key messages
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Affiliation(s)
- HK Lee
- Nursing, Yonsei University, Seoul , South Korea
| | - YS Yang
- Regional Office, Korea International Cooperation Agency , Vientiane, Laos
| | - SK Kim
- Nursing, Soonchunhyang, Cheonan , South Korea
| | - V Vongxay
- Public Health, University of Health Sciences , Vientiane, Laos
| | - YM Lee
- Nursing, DePaul University , Chicago, USA
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Shim WJ, Kim SK, Lee J, Eo S, Kim JS, Sun C. Toward a long-term monitoring program for seawater plastic pollution in the north Pacific Ocean: Review and global comparison. Environ Pollut 2022; 311:119911. [PMID: 35987287 DOI: 10.1016/j.envpol.2022.119911] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
Through a literature survey and meta-data analysis, monitoring methods and contamination levels of marine micro- and macroplastics in seawater were compared between the North Pacific and the world's other ocean basins. The minimum cut-off size in sampling and/or analysis of microplastics was crucial to the comparison of monitoring data. The North Pacific was most actively monitored for microplastics and showed comparatively high levels in the global context, while the Mediterranean Sea was most frequently monitored for macroplastics. Of the 65 extracted mean abundances of microplastics in seawater from the North Pacific, two (3.1%) exceeded the lowest predicted no-effect concentration (PNEC) proposed thus far. However, in the context of business-as-usual conditions, the PNEC exceedance probability may be expected to reach 27.7% in the North Pacific in 2100. The abundance of marine plastics in seawater, which reflects the current pollution status and marine organisms' waterborne exposure levels, is a useful indicator for marine plastic pollution. For regional and global assessments of pollution status across space and time, as well as assessment of ecological risk, two microplastic monitoring approaches are recommended along with their key aspects. Although microplastic pollution is closely linked with macroplastics, the monitoring data available for floating macroplastics and more extent to mesoplastics in most ocean basins are limited. A more specific framework for visual macroplastic survey (e.g. fixed minimum cut-off size, along with survey transect width and length according to survey vessel class) is required to facilitate data comparison. With the implementation of standardised methods, increased efforts are required to gather monitoring data for microplastics and-more importantly-floating macroplastics in seawater worldwide.
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Affiliation(s)
- Won Joon Shim
- Risk Analysis Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon 34113, Republic of Korea.
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea; Yellow Sea Institute, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Jongsu Lee
- Korea Marine Litter Institute, Our Sea of East Asia Network, Tongyeong 53013, Republic of Korea
| | - Soeun Eo
- Risk Analysis Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Ji-Su Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Chengjun Sun
- Key Laboratory of Marine Eco-environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources (MNR), Qingdao 266061, China; Laboratory of Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology, Qingdao 266071, China
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Heo Y, Cho WS, Maruthupandy M, Kim SK, Park JW. Biokinetics of fluorophore-conjugated polystyrene microplastics in marine mussels. J Hazard Mater 2022; 438:129471. [PMID: 35785737 DOI: 10.1016/j.jhazmat.2022.129471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Biokinetic information on microplastics in bivalves is required to reduce the human exposure, but little is known about the time-course and size effect on tissue absorption and clearance. The biokinetics of fluorophore-labeled polystyrene microbeads with diameters 10 µm (PL10) and 90 µm (PL90) in Mytilus galloprovincialis marine mussels was investigated in the present study. It was found that both PL10 and PL90 showed a biphasic tissue distribution pattern in digestive and non-digestive tissues, highlighting the significant tissue distribution starting from 48 h post-treatment. The differential size effect on tissue distribution was observed only in the gills, which suggests that PL10 accumulates more than PL90. The depuration kinetics show that particles of both sizes can be cleared in any tissue, but non-digestive tissue requires a longer duration for depuration than digestive tissue. The differential size effect on depuration was observed for both digestive and non-digestive tissues, suggesting that PL10 needed a longer duration for depuration than PL90. More than seven days were needed for depuration of microplastics in mussels, which is an exceptionally longer period compared to conventional depuration of bivalves. The most significant improvement of this study is providing the biokinetics of two different-sized microplastics in mussels and the differential time for purging microplastics from mussels.
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Affiliation(s)
- Yunwi Heo
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology, 17 Jegok-gil, Jinju 52834, Republic of Korea; Department of Pharmacology and Toxicology, College of Veterinary Medicine, Gyeongsang National University, 501, Jinju-daero, Jinju 52828, Republic of Korea
| | - Wan-Seob Cho
- Lab of Toxicology, Department of Health Sciences, The Graduate School of Dong-A University, 37, Nakdong-daero 550 beon-gil, Saha-gu, Busan 49315, Republic of Korea
| | - Muthuchamy Maruthupandy
- Lab of Toxicology, Department of Health Sciences, The Graduate School of Dong-A University, 37, Nakdong-daero 550 beon-gil, Saha-gu, Busan 49315, Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - June-Woo Park
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology, 17 Jegok-gil, Jinju 52834, Republic of Korea; Human and Environmental Toxicology Program, Korea University of Science and Technology (UST), 217, Gajeong-ro, Daejeon 34113, Republic of Korea.
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11
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Kwak JS, Lee Y, Yang J, Kim SK, Shin Y, Kim HJ, Choi JH, Im YJ, Kim MJ, Lee Yu K, Chang You J, Chun JS. Characterization of rhodanine derivatives as potential disease-modifying drugs for experimental mouse osteoarthritis. Osteoarthritis Cartilage 2022; 30:1210-1221. [PMID: 35513246 DOI: 10.1016/j.joca.2022.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study was performed to characterize selected rhodanine derivatives as potential preclinical disease-modifying drugs for experimental osteoarthritis (OA) in mice. METHODS Three rhodanine derivatives, designated rhodanine (R)-501, R-502, and R-503, were selected as candidate OA disease-modifying drugs. Their effects were evaluated by intra-articular (IA) injection in OA mouse models induced by DMM (destabilization of the medial meniscus) or adenoviral overexpression in joint tissues of hypoxia-inducible factor (HIF)-2α or zinc importer ZIP8. The regulatory mechanisms impacted by the rhodanine derivatives were examined in primary-culture chondrocytes and fibroblast-like synoviocytes (FLS). RESULTS All three rhodanine derivatives inhibited OA development caused by DMM or overexpression of HIF-2α or ZIP8. Compared to vehicle-treated group, for example, IA injection of R-501 in DMM-operated mice reduced median OARSI grade from 3.78 (IQR 3.00-5.00) to 1.89 (IQR 0.94-2.00, P = 0.0001). R-502 and R-503 also reduced from 3.67 (IQR 2.11-4.56) to 2.00 (IQR 1.00-2.00, P = 0.0030) and 2.00 (IQR 1.83-2.67, P = 0.0378), respectively. Mechanistically, the rhodanine derivatives inhibited the nuclear localization and transcriptional activity of HIF-2α in chondrocytes and FLS. They did not bind to Zn2+ or modulate Zn2+ homeostasis in chondrocytes or FLS; instead, they inhibited the nuclear localization and transcriptional activity of the Zn2+-dependent transcription factor, MTF1. HIF-2α, ZIP8, and interleukin-1β could upregulate matrix-degrading enzymes in chondrocytes and FLS, and the rhodanine derivatives inhibited these effects. CONCLUSION IA administration of rhodanine derivatives significantly reduced OA pathogenesis in various mouse models, demonstrating that these derivatives have disease-modifying therapeutic potential against OA pathogenesis.
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Affiliation(s)
- J-S Kwak
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Y Lee
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - J Yang
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - S K Kim
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Y Shin
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - H-J Kim
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - J H Choi
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Y J Im
- College of Pharmacy, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - M-J Kim
- Avixgen Inc., Seoul, 06649, Republic of Korea
| | - K Lee Yu
- National Research Laboratory for Molecular Virology, Department of Pathology, School of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - J Chang You
- Avixgen Inc., Seoul, 06649, Republic of Korea; National Research Laboratory for Molecular Virology, Department of Pathology, School of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - J-S Chun
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.
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12
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Kim SK, Song NS. Microplastics in edible salt: a literature review focusing on uncertainty related with measured minimum cutoff sizes. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2021.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Kim SK, Lee HJ, Kim JS, Kang SH, Yang EJ, Cho KH, Tian Z, Andrady A. Importance of seasonal sea ice in the western Arctic ocean to the Arctic and global microplastic budgets. J Hazard Mater 2021; 418:125971. [PMID: 34329003 DOI: 10.1016/j.jhazmat.2021.125971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 06/13/2023]
Abstract
Arctic sea ice entraps microplastics (MP) from seawater and atmosphere and is recognized as sink and transport vector of MPs. However, ice-trapped fraction in the global MP budget, contribution of atmospheric input, and linkage among Arctic basins remain unclear. To assess them, we investigated the number- and mass-based data separated by size and shape geometry for MPs in sea ice, snow, and melt pond water from the western Arctic Ocean (WAO). A significant dependency of MP data on measured cutoff size and geometry was found. For the same size range and geometry, sea ice MPs in WAO ((11.4 ± 9.12) × 103 N m-3 for ≥ 100 µm) were within comparable levels with those in other Arctic basins, but showed closer similarity in polymer and shape compositions between WAO and Arctic Central Basin, indicating the strong linkage of the two basins by the Transpolar Drift. Our budgeting shows that a significant amount of plastic particles ((3.4 ± 2.6) × 1016 N; 280 ± 701 kilotons), which are missed from the global inventory, is trapped in WAO seasonal sea ice, with < 1% snowfall contribution. Our findings highlight that WAO ice zone may play a role as a sink of global MPs as well as a source of Arctic MPs.
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Affiliation(s)
- Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea.
| | - Hee-Jee Lee
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Ji-Su Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Sung-Ho Kang
- Division of Ocean Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Republic of Korea
| | - Eun-Jin Yang
- Division of Ocean Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Republic of Korea
| | - Kyoung-Ho Cho
- Division of Ocean Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Republic of Korea
| | - Zhexi Tian
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Anthony Andrady
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA
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14
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Kim SK, Park MW, Min C, Park IS, Park B, Byun SH, Choi HG, Hong SJ. Increased risk of chronic otitis media in chronic rhinosinusitis patients: a longitudinal follow-up study using a national health screening cohort. Rhinology 2021; 59:292-300. [PMID: 33315021 DOI: 10.4193/rhin20.363] [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: 11/08/2022]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) and chronic otitis media (COM) share pathophysiological mechanisms such as bacterial infection, biofilm, and persistence of the obstruction state of ventilation routes. However, only a few studies have investigated the relationship between these two diseases nationwide and in the general population. The purpose of this study was to determine whether the incidence of COM in patients with CRS differed from that of a matched control from the national health screening cohort. METHODS Data from the Korean Health Insurance Review and Assessment Service-National Patient Samples were collected from 2002 to 2015. Participants who were treated ≥ ≥ ≥2 times and underwent head and neck computed tomography evaluation were selected. A 1:4 matched CRS group (n=8,057) and a control group (n=32,228) were selected. The control group included participants who were never treated with the ICD-10 code J32 from 2002 to 2015. The CRS group included CRS patients with/without nasal polyps. RESULTS The incidence of COM was significantly higher in the CRS group than in the control group. In a subgroup analysis, the incidence of COM in all age groups and in men and women was significantly higher in the CRS group than in the control group. More, CRS increased the risk of COM. CONCLUSIONS A significant association was observed between CRS and COM. This indicates that CRS patients have a high risk of developing COM.
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Affiliation(s)
- S K Kim
- epartment of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Dongtan, Korea
| | - M-W Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Kangdong Sacred Hospital, Seoul, Korea
| | - C Min
- Hallym Data Science Laboratory, Hallym University College of Medicine, Anyang, Korea; Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - I-S Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Dongtan, Korea
| | - B Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Anyang, Korea
| | - S-H Byun
- Department of Oral and Maxillofacial Surgery, Dentistry, Hallym University College of Medicine, Anyang, Korea
| | - H G Choi
- Hallym Data Science Laboratory, Hallym University College of Medicine, Anyang, Korea; Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Anyang, Korea
| | - S J Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Dongtan, Korea
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15
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Yi SW, Kim YM, Won YJ, Kim SK, Kim SH. Association between body mass index and the risk of falls: a nationwide population-based study. Osteoporos Int 2021; 32:1071-1078. [PMID: 33411009 DOI: 10.1007/s00198-020-05725-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/29/2020] [Indexed: 10/22/2022]
Abstract
UNLABELLED The association of BMI with falls differed between men and women in Korea. Obesity was associated with a greater risk of falls in women, whereas underweight seemed to increase the risk of falls compared with normal weight in men. PURPOSE This study examined the sex-specific association between body mass index (BMI) and falls in Korean adults using data from a large population-based survey. METHODS We analyzed 113,805 men and women (age ≥ 50 years) who participated in the Korean Community Health Survey in 2013. Logistic regression was used to assess the relationship between BMI and falls. RESULTS The mean (± standard deviation) age and BMI of all participants were 63.8 ± 9.6 years and 23.2 ± 2.9 kg/m2, respectively. Among the 113,805 subjects, 19.1% and 6.7% had histories of falls and recurrent falls, respectively. The association of BMI with recurrent falls differed between men and women. The multivariable-adjusted odd ratios (ORs) for recurrent falls were 0.98 (95% confidence interval [CI] 0.86-1.12), 1.23 (1.14-1.32), and 1.51 (1.26-1.81) in women with BMIs of < 18.5, 25-29.9, and ≥ 30 kg/m2, respectively, relative to those with BMIs of 18.5-24.9 kg/m2. The corresponding ORs for men were 1.20 (95% CI 1.01-1.42), 1.05 (0.96-1.14), and 0.97 (0.69-1.38), respectively. Older age and low economic level were associated independently with higher ORs of recurrent falls in men and women, respectively. In addition, comorbidities, including diabetes, stroke, arthritis, osteoporosis, and asthma, correlated significantly with an increased risk of recurrent falls (all p < 0.001). CONCLUSIONS Obesity was associated with a greater risk of recurrent falls in women, whereas underweight seemed to be associated with a greater risk of falls in men.
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Affiliation(s)
- S-W Yi
- Department of Preventive Medicine and Public Health, Catholic Kwandong University College of Medicine, Gangneung, South Korea
| | - Y M Kim
- Department of Internal Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Simgokro 100Gil 25, Seo-gu, Incheon, 22711, South Korea
| | - Y J Won
- Department of Internal Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Simgokro 100Gil 25, Seo-gu, Incheon, 22711, South Korea
| | - S K Kim
- Department of Internal Medicine, Cha University College of Medicine, Yatapro 59, Bundang-gu, Seongnam, 13496, South Korea
| | - S H Kim
- Department of Internal Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Simgokro 100Gil 25, Seo-gu, Incheon, 22711, South Korea.
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16
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Kim SK, Kim JS, Lee H, Lee HJ. Abundance and characteristics of microplastics in soils with different agricultural practices: Importance of sources with internal origin and environmental fate. J Hazard Mater 2021; 403:123997. [PMID: 33265033 DOI: 10.1016/j.jhazmat.2020.123997] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 08/05/2020] [Accepted: 09/12/2020] [Indexed: 06/12/2023]
Abstract
Despite intensive use of plastics in agriculture, little is known about the occurrence of microplastics (MPs) in agro-environment. To identify the effect of internal sources and environmental fate on MP appearance in farmland, we examined four soil types with different agricultural practices representing either direct application of polyethylene (PE) film-the inside (GS-in) and outside (GS-out) soils of greenhouse and mulch-film use soils (MS)-or rare use of plastics (rice-paddy soils; RS). MP abundance was 10-7630 items kg-1, with the order of GS-in, GS-out, RS, and MS. Besides the highest MP abundance, rare PE-sheet (4% of MPs) and increased MP abundance with sizes decreasing were unique for GS-in, implying the presence of internal sources other than PE-film and continued MP accumulation. Contrarily, in other outside soils high PE-sheet appearance (10-31%) indicated substantial input via fragmentation of applied PE-film (for GS-out and MS) or via surface-runoff (for RS) while drastic decline of small-sized MPs in order of MS > RS > GS-out than expected from steady-state fragmentation implied significant removal of MPs by surface runoff and/or infiltration. Our results suggest the importance of internal sources and environmental fate as significant factors affecting the occurrence of MPs in agricultural soils.
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Affiliation(s)
- Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea.
| | - Ji-Su Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Hwang Lee
- Research Institute of Basic Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Hee-Jee Lee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
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17
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Lee HJ, Song NS, Kim JS, Kim SK. Variation and Uncertainty of Microplastics in Commercial Table Salts: Critical Review and Validation. J Hazard Mater 2021; 402:123743. [PMID: 33254769 DOI: 10.1016/j.jhazmat.2020.123743] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 07/15/2020] [Accepted: 08/15/2020] [Indexed: 06/12/2023]
Abstract
Increasing concern of human exposure to microplastics (MPs) necessitates an assessment of the quality of MP data relevant to human exposure. In this literature review for table salt, we addressed the variability and uncertainty of MP data caused by different analytical methods among studies. Additionally, validation experiment was conducted to identify and correct uncertainties related to MP size. When combined without validation, salt data in literature (n = 150) showed a wide range of 0-39800 (1386 ± 5477) MPs kg-1. All procedures, including sample treatment, MP identification, and quality assurance were related to this variability. Most serious variability originated from the MP identification methods associated with minimum cut-off size of targeted/measured MPs and the selection of particles identified. When not corrected by size, MP content differed by 10-600 times among MP identification methods, with greatest value from visual observation, followed by FTIR and Raman methods. Meanwhile, there was a significant correlation-regardless of identification method-between logarithmic mean abundances and minimum cut-off sizes. The size-corrected values showed that adults intake up to 19000 MPs ≥10 μm annually via table salt, compared with 5100 MPs that was estimated from uncorrected mean abundance. Our validation experiment also showed the possibility of serious errors being caused by arbitrary selection of "MP-like particles" in spectroscopic analysis, specifically for smaller-sized particles. A combination of unverified data originated from different methods might have failed to adequately produce reliable human health-relevant results, thereby undermining the ability to quantify human risk.
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Affiliation(s)
- Hee-Jee Lee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Nan-Seon Song
- Research Institute of Basic Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Ji-Su Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea.
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Tian Z, Kim SK, Hyun JH. Environmental Distribution of Styrene Oligomers (SOs) Coupled with Their Source Characteristics: Tracing the Origin of SOs in the Environment. J Hazard Mater 2020; 398:122968. [PMID: 32768830 DOI: 10.1016/j.jhazmat.2020.122968] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/19/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
Despite growing concerns regarding plastic additives, their environmental fate coupled with leaching from source materials are not well known. Styrene oligomers (SOs), which are unintended additives in expanded polystyrene (EPS), are estrogenic micropollutants. Here, we identified the effects of their potential sources (i.e., EPS buoy and its leachate) and environmental dilution on SO distribution within coastal sediments. SO content in fresh EPS particles was 0.1% (w/w), dominated by 2,4,6-triphenyl-hexene (ST-1), while 2,4-diphenyl-1-butene (SD-2) accounted for most of the SOs in EPS leachate, indicating its faster leachability. In lake and offshore environments, the SO composition profiles from their terrestrial inputs and inner sites were similar to those of EPS leachate; meanwhile, the exponentially decreasing SO concentration and increasing styrene trimers (STs) fraction with distance from the inner to outer sites were evident. These profiles indicated continuous SO leaching from their potential sources in the inland, followed by a change in SOs due to environmental dilution. SOs in beach sediment implied the presence of micro-sized EPS particles. We suggest the ST-1 to SD-2 ratio as an index to differentiate among freshly leached SOs (∼0.02), environmentally diluted SOs after leaching (∼0.1), SOs in fresh EPS (∼1.2), and SOs in aged EPS (> 2).
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Affiliation(s)
- Zhexi Tian
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, Republic of Korea; Institute of Basic Science, Incheon National University, Academy-ro 119, Yeounsu-gu, Incheon 22012, Republic of Korea.
| | - Jung-Ho Hyun
- Department of Marine Science and Convergence Technology, Hanyang University, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan, Gyeonggi-do 15588, Republic of Korea
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19
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Haque MN, Nam SE, Eom HJ, Kim SK, Rhee JS. Exposure to sublethal concentrations of zinc pyrithione inhibits growth and survival of marine polychaete through induction of oxidative stress and DNA damage. Mar Pollut Bull 2020; 156:111276. [PMID: 32510415 DOI: 10.1016/j.marpolbul.2020.111276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 05/11/2023]
Abstract
Effects of zinc pyrithione (ZnPT) and inorganic Zn (ZnCl2) were evaluated on a marine polychaete at sublethal concentrations for 14 days. ZnPT decreased the burrowing activity and AChE activity with higher acute toxicities, implying its cholinergic effect. Both ZnPT and ZnCl2 increased MDA levels at higher concentrations, suggesting lipid peroxidation and oxidative stress. In the ZnPT-treated polychaete, enzymatic activities of CAT and SOD were elevated with an increase in DNA damage, whereas the levels of GSH, GPx, GR, and GST were decreased. However, in the ZnCl2-treated polychaete, the level of GSH and enzymatic activities of CAT, SOD, GPx, GR, and GST were significantly elevated to resist cellular damage. During 97 days depuration experiment, significant mortality and growth retardation were observed in the ZnPT-exposed polychaete. Overall, ZnPT was found to be more toxic than ZnCl2 with the harmful impact on antioxidant defense system and DNA stability in marine polychaete.
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Affiliation(s)
- Md Niamul Haque
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, South Korea; Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea
| | - Sang-Eun Nam
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, South Korea
| | - Hye-Jin Eom
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, South Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, South Korea; Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea.
| | - Jae-Sung Rhee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, South Korea; Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea; Institute of Green Environmental Research Center, Incheon 21999, South Korea.
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20
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Paluselli A, Kim SK. Horizontal and vertical distribution of phthalates acid ester (PAEs) in seawater and sediment of East China Sea and Korean South Sea: Traces of plastic debris? Mar Pollut Bull 2020; 151:110831. [PMID: 32056624 DOI: 10.1016/j.marpolbul.2019.110831] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 06/10/2023]
Abstract
Phthalate acid esters (PAEs) are commonly used as plasticizers in numerous plastic applications. Owing to their high leachability, the occurrence of PAEs can be used to trace plastic pollution. The northwest Pacific marginal seas, including the East China Sea, are suspected not only to be the area that receives the most plastic waste globally but also transit the waste to the ocean worldwide. To identify the potential sources of PAEs in this area, seawater at different water depths and sediment were investigated. The highest level of di(2-ethylhexyl) phthalate (DEHP), which is primarily used in plastic polymers, was observed in the accumulation zone of plastic debris. Moreover, DEHP exhibited not only the highest levels in the bottom layer of water column but also a significant correlation between bottom water layer and bed sediment, which strongly suggests a continuous flow of PAEs from the seafloor to the seawater column in this area.
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Affiliation(s)
- Andrea Paluselli
- Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeounsu-gu, Incheon 22012, Republic of Korea
| | - Seung-Kyu Kim
- Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeounsu-gu, Incheon 22012, Republic of Korea; Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea.
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21
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Kim SK, Kang CK. Temporal and spatial variations in hydrophobicity dependence of field-derived metrics to assess the biomagnification potential of hydrophobic organochlorine compounds. Sci Total Environ 2019; 690:300-312. [PMID: 31295584 DOI: 10.1016/j.scitotenv.2019.06.221] [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: 03/31/2019] [Revised: 06/14/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
The bioaccumulation potential ("B") of compounds is one of the major considerations in assessing chemical hazards. A variety of metrics, including hydrophobicity (KOW), bioconcentration factor (BCF), bioaccumulation factor (BAF), and to an increasing degree biomagnification factor (BMF) and trophic magnification factor (TMF), are widely used to characterize "B". In the present study, the variation and hydrophobicity-dependence of each of these metrics for recalcitrant hydrophobic organochlorine compounds (HOCs) was determined from four food webs collected in two different seasons at two different sites of the Han River, Korea. Measured environmental parameters and stable isotopic ratios exhibited distinct seasonal and spatial shifts in the ecological condition of the river. The observed values of individual metrics were positively and linearly related with their log KOW values, but linearized slopes differed significantly among the four food webs, with the largest variation being exhibited by TMF and log fugacity ratio (log F) followed by log BMF > log BAF. When based on field-derived mean linear equations, different log KOW values were obtained for a critical point for the identification of biomagnification of HOCs. Consequently, the biomagnification potential of HOCs and its relationship with KOW can vary, being seriously affected by not only on the metrics used for its assessment but also on spatial and temporal variations in ecological conditions. Our results indicate that TMF for "B" might be more robust than the other metrics but the development of new methodologies to reduce uncertainty and to enhance the accuracy of TMFs by correcting for ecological variation, together with addition efforts to harmonize individual metrics for "B".
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Affiliation(s)
- Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro, Yeounsu-gu, Incheon 22012, Republic of Korea.
| | - Chang-Keun Kang
- School of Earth Sciences & Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
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22
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Eun L, Kim SK, Kim JK. P4641Are coronary artery abnormalities in Kawasaki disease associated with iron deficiency anemia? Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.1023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Purpose
Coronary artery abnormalities (CAA) are the most important complication of Kawasaki disease (KD). Iron deficiency anemia (IDA) is prevalent micronutrient deficiencies and its association with KD remains unknown. We hypothesized the presence of IDA could be a predictor of CAA.
Methods
This retrospective study included 173 KD patients, divided into two groups by absence (Group 1) and presence (Group 2) of CAA. The odds ratio (OR) with 95% confidence interval (CI) was calculated using a logistic regression model to estimate the association between CAA and other indicators. Due to the collinearity between the IDA indicators, each indicator was paired with anemia in 3 models.
Results
The 3 indicators of IDA, serum iron, iron saturation and ferritin, were all significantly higher in Group 1 than in Group 2. Three sets of models including anemia with iron indicators produced the odd ratio (OR) of CAA of 3.513, 3.171, and 2.256, respectively. The 3 indicators of IDA were negatively associated with CAA, by OR of 0.965, 0.914, and 0.944, respectively. The Area under the curve (AUC) of ferritin, iron saturation, serum iron, anemia, and Kobayashi score was 0.907 (95% CI, 0.851–0.963), 0.729 (95% CI, 0.648–0.810), 0.711 (95% CI, 0.629–0.793), 0.638 (95% CI, 0.545–0.731), and 0.563 (95% CI, 0.489–0.636) respectively.
Figure 1 & 3
Conclusion
The indicators of IDA, especially ferritin, were highly associated with CAA, so that they were stronger predictors compared to the Kobayashi score. The IDA indicators can be used to predict CAA development and suggest the need for early intervention.
Acknowledgement/Funding
None
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Affiliation(s)
- L Eun
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - S K Kim
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J K Kim
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
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23
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Yang SM, Park JK, Na YS, Wang ZR, Ko WH, In Y, Lee JH, Lee KD, Kim SK. Nonambipolar Transport due to Electrons with 3D Resistive Response in the KSTAR Tokamak. Phys Rev Lett 2019; 123:095001. [PMID: 31524439 DOI: 10.1103/physrevlett.123.095001] [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: 02/16/2019] [Revised: 07/19/2019] [Indexed: 06/10/2023]
Abstract
A small nonaxisymmetric (3D) magnetic field can induce nonambipolar transport of the particle species confined in a tokamak and thus a significant change of plasma rotation. This process can be in a favor of instability control in the region where the tokamak plasma is sufficiently collisional and resistive, as observed in the applications of n=1 resonant magnetic perturbations to the KSTAR tokamak. The plasma rotation can be globally accelerated due to radially drifting electrons and constrained to the electron root, if the radial transport is enhanced by an amplified 3D response. This mechanism is verified by a kinetically self-consistent magnetohydrodynamic modeling for both response and transport, which offers the quantitative explanations on the internal n=1 structure detected by electron-cyclotron-emission imaging and the cocurrent plasma spinning observed in the experiments.
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Affiliation(s)
- S M Yang
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - J-K Park
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - Yong-Su Na
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Z R Wang
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - W H Ko
- National Fusion Research Institue, Daejeon 305-333, Republic of Korea
| | - Y In
- Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea
| | - J H Lee
- National Fusion Research Institue, Daejeon 305-333, Republic of Korea
| | - K D Lee
- National Fusion Research Institue, Daejeon 305-333, Republic of Korea
| | - S K Kim
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
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24
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Adhikari G, Adhikari P, de Souza EB, Carlin N, Choi S, Djamal M, Ezeribe AC, Ha C, Hahn IS, Jeon EJ, Jo JH, Joo HW, Kang WG, Kang W, Kauer M, Kim GS, Kim H, Kim HJ, Kim KW, Kim NY, Kim SK, Kim YD, Kim YH, Ko YJ, Kudryavtsev VA, Lee HS, Lee J, Lee JY, Lee MH, Leonard DS, Lynch WA, Maruyama RH, Mouton F, Olsen SL, Park BJ, Park HK, Park HS, Park KS, Pitta RLC, Prihtiadi H, Ra SJ, Rott C, Shin KA, Scarff A, Spooner NJC, Thompson WG, Yang L, Yu GH. Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment. Phys Rev Lett 2019; 123:031302. [PMID: 31386435 DOI: 10.1103/physrevlett.123.031302] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Indexed: 06/10/2023]
Abstract
We present new constraints on the dark matter-induced annual modulation signal using 1.7 years of COSINE-100 data with a total exposure of 97.7 kg yr. The COSINE-100 experiment, consisting of 106 kg of NaI(Tl) target material, is designed to carry out a model-independent test of DAMA/LIBRA's claim of WIMP discovery by searching for the same annual modulation signal using the same NaI(Tl) target. The crystal data show a 2.7 cpd/kg/keV background rate on average in the 2-6 keV energy region of interest. Using a χ-squared minimization method we observe best fit values for modulation amplitude and phase of 0.0092±0.0067 cpd/kg/keV and 127.2±45.9 d, respectively.
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Affiliation(s)
- G Adhikari
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - P Adhikari
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - E Barbosa de Souza
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - N Carlin
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - S Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - M Djamal
- Department of Physics, Bandung Institute of Technology, Bandung 40132, Indonesia
| | - A C Ezeribe
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - C Ha
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - I S Hahn
- Department of Science Education, Ewha Womans University, Seoul 03760, Republic of Korea
| | - E J Jeon
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J H Jo
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - H W Joo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - W G Kang
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - W Kang
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - G S Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - H J Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - K W Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - N Y Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S K Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Y D Kim
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Y H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Y J Ko
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - V A Kudryavtsev
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - H S Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - J Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Y Lee
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - M H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - D S Leonard
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - W A Lynch
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - R H Maruyama
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - F Mouton
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - S L Olsen
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - B J Park
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H K Park
- Department of Accelerator Science, Korea University, Sejong 30019, Republic of Korea
| | - H S Park
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - K S Park
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - R L C Pitta
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - H Prihtiadi
- Department of Physics, Bandung Institute of Technology, Bandung 40132, Indonesia
| | - S J Ra
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - K A Shin
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - A Scarff
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - N J C Spooner
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - W G Thompson
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - L Yang
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - G H Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
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25
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Baek BH, Lee YY, Kim SK, Yoon W. Pretreatment Anterior Choroidal Artery Infarction Predicts Poor Outcome after Thrombectomy in Intracranial ICA Occlusion. AJNR Am J Neuroradiol 2019; 40:1349-1355. [PMID: 31272965 DOI: 10.3174/ajnr.a6126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 06/13/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND PURPOSE Predictors of outcome after endovascular thrombectomy have not been investigated adequately in patients with intracranial ICA occlusions. This study aimed to assess the impact of anterior choroidal artery infarction in pretreatment DWI on the outcome of patients with acute intracranial ICA occlusion who underwent thrombectomy. MATERIALS AND METHODS This study included 113 patients with acute intracranial ICA occlusion who underwent DWI followed by thrombectomy between January 2011 and July 2016. Characteristics and outcomes were compared between the groups positive and negative for anterior choroidal artery infarction and patients with good outcomes (90-day mRS 0-2) and poor outcomes (mRS 3-6). Binary logistic regression analyses were performed to identify independent predictors of a good outcome. RESULTS On pretreatment DWI, anterior choroidal artery infarction was observed in 60 patients (53.1%). Good outcomes were significantly less frequent in the group positive for anterior choroidal artery infarction than in the group negative for it (25% versus 49.1%, P = .008). Parenchymal hemorrhage occurred only in the group positive for anterior choroidal artery infarction (13.3% versus 0%, P = .007). In the multivariate logistic regression analysis, independent predictors of good outcome were an absence of anterior choroidal artery infarction (OR, 0.333; 95% CI, 0.135-0.824; P = .017) and successful reperfusion (OR, 5.598; 95% CI, 1.135-27.604; P = .034). CONCLUSIONS Pretreatment anterior choroidal artery infarction is associated with parenchymal hemorrhage and poor outcome after thrombectomy in patients with acute intracranial ICA occlusion. In addition, the absence of anterior choroidal artery infarction and successful reperfusion were independent predictors of good outcome after thrombectomy in acute intracranial ICA occlusion.
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Affiliation(s)
- B H Baek
- From the Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Y Y Lee
- From the Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - S K Kim
- From the Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - W Yoon
- From the Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea.
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26
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Jung J, Cho YY, Jung JH, Kim KY, Kim HS, Baek JH, Hahm JR, Cho HS, Kim SK. Are patients with mild to moderate renal impairment on metformin or other oral anti-hyperglycaemic agents at increased risk of contrast-induced nephropathy and metabolic acidosis after radiocontrast exposure? Clin Radiol 2019; 74:651.e1-651.e6. [PMID: 31202566 DOI: 10.1016/j.crad.2019.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
Abstract
AIM To investigate whether the use of metformin during computed tomography (CT) with radiocontrast agents increases the risk of contrast-induced nephropathy (CIN) and metabolic acidosis after CT in type 2 diabetes patients with mild to moderate renal failure. MATERIALS AND METHODS Patient records from January 2015 to December 2017 were reviewed retrospectively. A total of 374 patients were included in the final analysis. Of them, 157 patients received metformin, and 217 patients were taking other oral hypoglycaemic agents (OHAs) during radiocontrast administration. RESULTS No significant difference in CIN incidence was observed between the metformin use group and the other OHAs group (p=0.085). Metabolic acidosis after CT was seen in 91 (58%) patients who used metformin and 141 (65%) patients who were taking other OHAs. There was no relationship between metabolic acidosis after CT and the use of metformin (p=0.195). Metabolic acidosis after radiocontrast agent exposure was associated with malignant disease, low serum albumin level, and low serum total CO2 level at baseline. CONCLUSION These data show that other factors, but not metformin use, are associated with metabolic acidosis after radiocontrast agent exposure in patients with reduced renal function. These data support current recommendations that there is no need to discontinue metformin before CT using radiocontrast agents in patients with mild to moderate renal failure.
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Affiliation(s)
- J Jung
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Y Y Cho
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - J H Jung
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - K Y Kim
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - H S Kim
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - J-H Baek
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - J R Hahm
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - H S Cho
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - S K Kim
- Gyeongsang National University School of Medicine Jinju, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea; Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea.
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27
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Ha C, Adhikari G, Adhikari P, Barbosa de Souza E, Carlin N, Choi S, Djamal M, Ezeribe AC, Hahn IS, Jeon EJ, Jo JH, Joo HW, Kang WG, Kang W, Kauer M, Kim GS, Kim H, Kim HJ, Kim KW, Kim NY, Kim SK, Kim YD, Kim YH, Ko YJ, Kudryavtsev VA, Lee HS, Lee J, Lee JY, Lee MH, Leonard DS, Lynch WA, Maruyama RH, Mouton F, Olsen SL, Park BJ, Park HK, Park HS, Park KS, Pitta RLC, Prihtiadi H, Ra SJ, Rott C, Shin KA, Scarff A, Spooner NJC, Thompson WG, Yang L, Yu GH. First Direct Search for Inelastic Boosted Dark Matter with COSINE-100. Phys Rev Lett 2019; 122:131802. [PMID: 31012610 DOI: 10.1103/physrevlett.122.131802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Indexed: 06/09/2023]
Abstract
A search for inelastic boosted dark matter (IBDM) using the COSINE-100 detector with 59.5 days of data is presented. This relativistic dark matter is theorized to interact with the target material through inelastic scattering with electrons, creating a heavier state that subsequently produces standard model particles, such as an electron-positron pair. In this study, we search for this electron-positron pair in coincidence with the initially scattered electron as a signature for an IBDM interaction. No excess over the predicted background event rate is observed. Therefore, we present limits on IBDM interactions under various hypotheses, one of which allows us to explore an area of the dark photon parameter space that has not yet been covered by other experiments. This is the first experimental search for IBDM using a terrestrial detector.
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Affiliation(s)
- C Ha
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - G Adhikari
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - P Adhikari
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - E Barbosa de Souza
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - N Carlin
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - S Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - M Djamal
- Department of Physics, Bandung Institute of Technology, Bandung 40132, Indonesia
| | - A C Ezeribe
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - I S Hahn
- Department of Science Education, Ewha Womans University, Seoul 03760, Republic of Korea
| | - E J Jeon
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J H Jo
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - H W Joo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - W G Kang
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - W Kang
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - G S Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - H J Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - K W Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - N Y Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S K Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Y D Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - Y H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Y J Ko
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - V A Kudryavtsev
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - H S Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Y Lee
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - M H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - D S Leonard
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - W A Lynch
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - R H Maruyama
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - F Mouton
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - S L Olsen
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - B J Park
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H K Park
- Department of Accelerator Science, Korea University, Sejong 30019, Republic of Korea
| | - H S Park
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - K S Park
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - R L C Pitta
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - H Prihtiadi
- Department of Physics, Bandung Institute of Technology, Bandung 40132, Indonesia
| | - S J Ra
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - K A Shin
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - A Scarff
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - N J C Spooner
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - W G Thompson
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - L Yang
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - G H Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Moon YW, Park N, Hur J, Pandey K, Cho YB, Kim SK, Lee SA, Son GW, Jo JM, An HJ. Abstract P4-06-23: Feasibility of sygeneic mice models of breast cancer for research of immune checkpoint blockades. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-06-23] [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: 11/16/2022]
Abstract
Abstract
Background: With the increasing success of immune checkpoint blockades for cancer treatment, we increasingly need well-characterized preclinical models. Syngeneic mice models (with a fully competent immune system) have advantages that they are easily established and cost less, though they do not reflect genetic complexity of human tumors. We evaluated feasibility of syngeneic mice models of breast cancer by analyzing efficacy of immune checkpoint blockade and dynamic change of tumor immune microenvironment.
Methods: We used syngeneic mice model of JC, 4T1, and EMT6 cells, which are all murine triple negative breast cancer in BALB/c mice. At the time when subcutaneous tumors reach at 50˜100mm^3, each mice models were divided into 2 groups for treatment versus no-treatment control. In the treatment group, mice version of anti-PD-1 antibody was intraperitoneally injected (q 3 days, x 6). Anti-tumor efficacy was monitored by measuring tumor volume. 'Tumor response' was defined as a case with tumor volume less than that of control group by a standard error at a determined time point. Immune microenvironment was evaluated by measuring serum cytokines (IL-2, IL-6, IL-10, IFNγ, and TNFα) with legendplex and immune cells (CD3, CD4, CD8, CD56, and FOXP3) of peripheral blood with FACS before injection of PD-1 blockade, after 1st injection, and when euthanized. Tumor-infiltrating immune cells were evaluated with FACS, when euthanized.
Results: The tumor response rate to PD-1 blockade was highest in the 4T1 model (54.5%, 6/11) compared to JC model (40%, 4/10) or EMT6 model (36.4%, 4/11). Bleeding 3 times and tumor obtainment when euthanized in each mouse were feasible for profiling of cytokines and immune cells. Although before treatment with PD-1 blockade, CD3+T cells in peripheral blood were slightly lower in 4T1 model (18.3±8.1%) than JC model (24.6±4.7%) or EMT6 model (27.9±6.3%), after injection of one dose of PD-1 blockade, CD3+T cells increased 1.5 times in 4T1 model (18.3% to 27.3%), whereas those CD3+T cells decreased slightly in JC model and EMT6 model. Dynamic changes were not observed in other subsets of peripheral immune cells in all 3 models. Serum TNFα (with statistical significance) and IFNγ (with borderline significance) were higher in responders than in non-responders or no-treatment control.
Conclusions: Syngeneic mice models of breast cancer were feasible to investigate immune checkpoint blockades and monitor dynamic change of immune microenvironment. In this regard, such models may be used to evaluate immune checkpoint blockade-based combination therapy as well.
Citation Format: Moon YW, Park N, Hur J, Pandey K, Cho YB, Kim SK, Lee SA, Son GW, Jo JM, An H-J. Feasibility of sygeneic mice models of breast cancer for research of immune checkpoint blockades [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-06-23.
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Affiliation(s)
- YW Moon
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - N Park
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - J Hur
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - K Pandey
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - YB Cho
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - SK Kim
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - SA Lee
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - GW Son
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - JM Jo
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
| | - H-J An
- CHA Bundang Medical Center, Seongnam, Republic of Korea; CHA University, Seongnam, Republic of Korea
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Lee AR, Niu KM, Lee WD, Kothari D, Kim SK. Comparison of the Dietary Supplementation of Lactobacillus plantarum, and Fermented and Non-Fermented Artemisia Annua on the Performance, Egg Quality, Serum Cholesterol, and Eggyolk-Oxidative Stability During Storage in Laying Hens. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2018-0903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- AR Lee
- Konkuk University, Republic of Korea
| | - KM Niu
- Konkuk University, Republic of Korea
| | - WD Lee
- Konkuk University, Republic of Korea
| | - D Kothari
- Konkuk University, Republic of Korea
| | - SK Kim
- Konkuk University, Republic of Korea
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Cho SB, Baek HJ, Ryu KH, Choi BH, Moon JI, Kim TB, Kim SK, Park H, Hwang MJ. Clinical Feasibility of Zero TE Skull MRI in Patients with Head Trauma in Comparison with CT: A Single-Center Study. AJNR Am J Neuroradiol 2019; 40:109-115. [PMID: 30545839 DOI: 10.3174/ajnr.a5916] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/01/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Conventional MR imaging techniques cannot produce optimal images of bone structures because bone has little water and a very short T2 life span. The aim of this study was to investigate the clinical feasibility of skull MR imaging using the zero TE sequence in patients with head trauma by assessing its diagnostic image quality and quantitative measurement compared with CT images. MATERIALS AND METHODS Thirteen enrolled patients with head trauma were assessed using brain CT and skull MR imaging. Image quality was graded on a 5-point Likert scale to compare the 2 modalities. To evaluate quantitative analyses between the 2 imaging modalities, we measured skull thickness and normalized bone tissue signal. Interobserver reliability was assessed using weighted κ statistics and the intraclass correlation coefficient. RESULTS Both imaging techniques clearly depicted skull fractures in all 13 patients. The mean scores for skull MR imaging and CT were 4.65 ± 0.56 and 4.73 ± 0.45 (P = .157), respectively, with substantial interobserver agreement (P < .05). The 2 imaging modalities showed no difference in skull thickness (P = .092) and had good correlation (r 2 = 0.997). The mean value of normalized bone tissue signal among the 3 layers of the skull was relatively consistent (P = .401) with high interobserver agreement (P < .001). CONCLUSIONS Zero TE skull MR imaging has diagnostic image quality comparable with that of CT images. It also provides consistent results on the quantitative measurement of cortical bone with CT images.
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Affiliation(s)
- S B Cho
- From the Departments of Radiology (S.B.C., H.J.B., K.H.R., B.H.C., J.I.M., T.B.K.)
| | - H J Baek
- From the Departments of Radiology (S.B.C., H.J.B., K.H.R., B.H.C., J.I.M., T.B.K.)
| | - K H Ryu
- From the Departments of Radiology (S.B.C., H.J.B., K.H.R., B.H.C., J.I.M., T.B.K.)
| | - B H Choi
- From the Departments of Radiology (S.B.C., H.J.B., K.H.R., B.H.C., J.I.M., T.B.K.)
| | - J I Moon
- From the Departments of Radiology (S.B.C., H.J.B., K.H.R., B.H.C., J.I.M., T.B.K.)
| | - T B Kim
- From the Departments of Radiology (S.B.C., H.J.B., K.H.R., B.H.C., J.I.M., T.B.K.)
| | - S K Kim
- Neurosurgery (S.K.K., H.P.), Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Republic of Korea
| | - H Park
- Neurosurgery (S.K.K., H.P.), Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Republic of Korea
| | - M J Hwang
- MR Applications and Workflow (M.J.H.), GE Healthcare Korea, Seoul, Republic of Korea
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Yan BY, Kim SK, Ma J, Barker CA. Local recurrence and quality of life after adjuvant radiation therapy in high-risk squamous cell carcinoma. Br J Dermatol 2018; 180:417-418. [PMID: 30244481 DOI: 10.1111/bjd.17244] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- B Y Yan
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box 22, New York, NY, 10065, U.S.A
| | - S K Kim
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box 22, New York, NY, 10065, U.S.A
| | - J Ma
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box 22, New York, NY, 10065, U.S.A
| | - C A Barker
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box 22, New York, NY, 10065, U.S.A
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Kim JS, Lee HJ, Kim SK, Kim HJ. Global Pattern of Microplastics (MPs) in Commercial Food-Grade Salts: Sea Salt as an Indicator of Seawater MP Pollution. Environ Sci Technol 2018; 52:12819-12828. [PMID: 30285421 DOI: 10.1021/acs.est.8b04180] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Previous studies have identified microplastics (MPs) in commercial table salts but could not exactly address the origin of the MPs because of several limitations. The present study is based on the hypothesis that commercial sea salts can act as an indicator of MP pollution in the surrounding environment unless the MPs are filtered out during the manufacturing process. A total of 39 different salt brands produced at geospatially different sites, including 28 sea salt brands from 16 countries/regions on six continents, were investigated. A wide range of MP content (in number of MPs per kg of salt; n/kg) was found: 0-1674 n/kg (excluding one outlier of 13 629 n/kg) in sea salts, 0-148 n/kg in rock salt, and 28-462 n/kg in lake salt. Relatively high MP content was identified in sea salts produced in Asian countries/regions. The abundance of MPs in unrefined sea salts ( n = 25) exhibited significant linear correlations with plastic emissions from worldwide rivers ( r2= 0.33; p = 0.003) and with the MP pollution levels in surrounding seawater ( r2= 0.46; p = 0.021) in the published literature. The results indicate that not only is Asia a hot spot of global plastic pollution, as previous studies have suggested, but also that sea salt can be a good indicator of the magnitude of MP pollution in the surrounding marine environment.
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Affiliation(s)
- Ji-Su Kim
- Department of Marine Science, College of Natural Sciences , Incheon National University , Academy-ro 119 , Yeounsu-gu, Incheon 22012 , Republic of Korea
| | - Hee-Jee Lee
- Department of Marine Science, College of Natural Sciences , Incheon National University , Academy-ro 119 , Yeounsu-gu, Incheon 22012 , Republic of Korea
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences , Incheon National University , Academy-ro 119 , Yeounsu-gu, Incheon 22012 , Republic of Korea
- Research Institute of Basic Sciences , Incheon National University , Academy-ro 119, Yeounsu-gu, Incheon 22012 , Republic of Korea
| | - Hyun-Jung Kim
- Greenpeace East Asia , 6F Cheongryong Bld 257, Hangang-daero , Yongsan-gu, Seoul 04322 , Republic of Korea
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Shishikura D, Kataoka YK, Digiovanni GD, Janssan AJ, Takata KT, Kim SK, Andrews JA, Psaltis PP, Wolski KW, Nissen SN, Nicholls SN. P2767Relationship between plaque attenuation and echogenicity with major adverse cardiovascular events: insights from intravascular ultrasound. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2767] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D Shishikura
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - Y K Kataoka
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - G D Digiovanni
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - A J Janssan
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - K T Takata
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - S K Kim
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - J A Andrews
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - P P Psaltis
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
| | - K W Wolski
- Cleveland Clinic Foundation, Department of Cardiovascular Medicine and Cleveland Clinic Coordinating Center for Clinical Research, Cleveland, United States of America
| | - S N Nissen
- Cleveland Clinic Foundation, Department of Cardiovascular Medicine and Cleveland Clinic Coordinating Center for Clinical Research, Cleveland, United States of America
| | - S N Nicholls
- South Australian Health and Medical Research Institute, Heart Health, Adelaide, Australia
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Kim SK, Im J, Yoon CE, Oh HB. Identification of a new HLA-A*11 allele, A*11:251N. HLA 2018; 92:167-168. [PMID: 29896792 DOI: 10.1111/tan.13310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/07/2018] [Accepted: 06/09/2018] [Indexed: 11/29/2022]
Abstract
The new allele, A*11:251N, differs from A*11:01:01 by insertion of two nucleotides at position 204-205.
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Affiliation(s)
- S K Kim
- Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, South Korea
| | - J Im
- Biowithus Life Science Institute, Seoul, South Korea
| | - C E Yoon
- Biowithus Life Science Institute, Seoul, South Korea
| | - H-B Oh
- Department of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, South Korea
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Kim SK, You HR, Kim SH, Yun SJ, Lee SC, Lee JB. Skin photorejuvenation effects of light-emitting diodes (LEDs): a comparative study of yellow and red LEDs in vitro and in vivo. Clin Exp Dermatol 2018; 41:798-805. [PMID: 27663159 DOI: 10.1111/ced.12902] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Red-coloured light-emitting diodes (LEDs) can improve skin photorejuvenation and regeneration by increasing cellular metabolic activity. AIM To evaluate the effectiveness of visible LEDs with specific wavelengths for skin photorejuvenation in vitro and in vivo. METHODS Normal human dermal fibroblasts (HDFs) from neonatal foreskin were cultured and irradiated in vitro by LEDs at different wavelengths (410-850 nm) and doses (0-10 J/cm(2) ). In vivo experiments were performed on the skin of hairless mice. Expression of collagen (COL) and matrix metalloproteinases (MMPs) was evaluated by semi-quantitative reverse transcription PCR (semi-qRT-PCR), western blotting and a procollagen type I C-peptide enzyme immunoassay (EIA). Haematoxylin and eosin and Masson trichrome stains were performed to evaluate histological changes. RESULTS In HDFs, COL I was upregulated and MMP-1 was downregulated in response to LED irradiation at 595 ± 2 and 630 ± 8 nm. In the EIA, a peak result was achieved at a dose of 5 J/cm(2) with LED at 595 ± 2 nm. In vivo, COL I synthesis was upregulated in a dose-dependent manner to both 595 and 630 nm LED irradiation, and this effect was prolonged to 21 days after a single irradiation with a dose of 100 J/cm(2) . These histological changes were consistent with the results of semi-qRT-PCR and western blots. CONCLUSION Specific LED treatment with 595 ± 2 and 630 ± 8 nm irradiation was able to modulate COL and MMPs in skin, with the effects persisting for at least 21 days after irradiation. These findings suggest that yellow and red LEDs might be useful tools for skin photorejuvenation.
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Affiliation(s)
- S K Kim
- Namak Oracle Dermatology Clinic, Gwangju, Jeollanam-do, Korea
| | - H R You
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S H Kim
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S J Yun
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S C Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - J B Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea.
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Kim SK, Barker CA. Outcomes of radiation therapy for advanced T3/T4 nonmelanoma cutaneous squamous cell and basal cell carcinoma. Br J Dermatol 2017; 178:e30-e32. [PMID: 28617933 DOI: 10.1111/bjd.15728] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S K Kim
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, U.S.A
| | - C A Barker
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, U.S.A
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Jung NJ, Na SS, Kim SK, Hwangbo G. The effect of the inspiratory muscle training on functional ability in stroke patients. J Phys Ther Sci 2017; 29:1954-1956. [PMID: 29200632 PMCID: PMC5702822 DOI: 10.1589/jpts.29.1954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 08/09/2017] [Indexed: 11/24/2022] Open
Abstract
[Purpose] This study was to find out an inspiratory muscle training (IMT) program therapeutic effects on stroke patients' functional ability. [Subjects and Methods] Twenty stroke patients were assigned to one of two groups: inspiratory muscle training (n=10), and control (n=10), randomization. The inspiratory muscle training participants undertook an exercise program for 30 minute per times, 5 times a week for 6 weeks. The investigator measured the patients' trunk impairment scale (TIS) and 6 minute walking test (6MW) for functional ability before and after IMT. [Results] The TIS appeared some significant differences in both groups before and after the training. The 6MW test showed some significant differences in the inspiratory muscle training group, but didn't show any significant difference in the control group. And the differences in both groups after depending the inspiratory muscle training were significantly found in the tests of TIS and 6MW test [Conclusion] The results showed that the inspiratory muscle training in stroke patients are correlated with the trunk stability and locomotion ability, suggesting that physical therapist must take into consideration the inspiratory muscle training, as well as functional training to improve physical function in stroke patients.
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Affiliation(s)
- Nam-Jin Jung
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Sang-Su Na
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Seung-Kyu Kim
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Gak Hwangbo
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
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38
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Jung GH, Kim SK. Effects of sowing time limitation and total rutin contents of buckwheat in Korea. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- GH Jung
- National Institute of Crop Science, RDA, suwon, Korea, Republic of (South)
| | - SK Kim
- National Institute of Crop Science, RDA, suwon, Korea, Republic of (South)
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Kwon BG, Amamiya K, Sato H, Chung SY, Kodera Y, Kim SK, Lee EJ, Saido K. Monitoring of styrene oligomers as indicators of polystyrene plastic pollution in the North-West Pacific Ocean. Chemosphere 2017; 180:500-505. [PMID: 28427037 DOI: 10.1016/j.chemosphere.2017.04.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 03/17/2017] [Accepted: 04/13/2017] [Indexed: 05/18/2023]
Abstract
Styrene oligomers (SOs) as global contaminants are an environmental concern. However, little is known on the distribution of SOs in the ocean. Here, we show the distribution of anthropogenic SOs generated from discarded polystyrene (PS) plastic monitored from the coastal ocean surface waters (horizontal distribution) and deep seawaters (vertical distribution) in the North-West Pacific Ocean. SOs concentrations in surface seawater and deep seawater ranged from 0.17 to 4.26 μg L-1 (total mean: 1.48 ± 1.23 μg L-1) and from 0.31 to 4.31 μg L-1 (total mean: 1.32 ± 0.87 μg L-1), respectively. Since there is no significant difference in the mean concentrations, SOs seems to be spread across marine environment selected in this study. Nevertheless, regional SOs appears to persist to varying degrees with their broad horizontal and vertical distribution in the ocean. Each horizontal and vertical distribution of SOs differs by approximately 1.95-2.57 times, probably depending on the events of weather and global ocean circulation. These results provide the distribution pattern of SOs for assessing environmental pollution arising from PS plastic.
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Affiliation(s)
- Bum Gun Kwon
- Department of Bioenvironmental & Chemical Engineering, Chosun College of Science and Technology, 309-1 Pilmundae-ro, Dong-gu, Gwangju, 501-744, Republic of Korea.
| | - Keiji Amamiya
- Department of Chemistry, College of Science & Technology, Nihon University, 7-24-1, Narashinodai, Funabashi-shi, Chiba, 274-8501, Japan
| | - Hideto Sato
- Department of Chemistry, College of Science & Technology, Nihon University, 7-24-1, Narashinodai, Funabashi-shi, Chiba, 274-8501, Japan
| | - Seon-Yong Chung
- Department of Environment and Energy Engineering, College of Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 500-757, Republic of Korea
| | - Yoichi Kodera
- National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki, 305-8569, Japan
| | - Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon, 22012, Republic of Korea; Research Institute of Natural Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon, 22012, Republic of Korea
| | - Eung Jae Lee
- Department of Bioenvironmental & Chemical Engineering, Chosun College of Science and Technology, 309-1 Pilmundae-ro, Dong-gu, Gwangju, 501-744, Republic of Korea
| | - Katsuhiko Saido
- National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki, 305-8569, Japan; School of Ocean and Earth Science and Technology (SOEST), University of Hawai'i at Mãnoa, 1000 Pope Rd, MSB 629, Honolulu, HI, 96822, USA.
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Park MS, Kim SK, Park HJ, Seok H, Kang SW, Lee SH, Kim YG, Moon JY, Kim TH, Kim YH, Kang SW, Chung JH, Jeong KH. Association Studies of Bone Morphogenetic Protein 2 Gene Polymorphisms With Acute Rejection in Kidney Transplantation Recipients. Transplant Proc 2017; 49:1012-1017. [PMID: 28583517 DOI: 10.1016/j.transproceed.2017.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Bone morphogenetic proteins (BMP) belong to the transforming growth factor beta superfamily of proteins. This study was performed to evaluate the association of BMP gene polymorphisms with acute renal allograft rejection (AR) and graft dysfunction (GD) in Koreans. METHODS Three hundred thirty-one patients who had kidney transplantation procedures were recruited. Transplantation outcomes were determined in terms of AR and GD criteria. We selected six single nucleotide polymorphisms (SNPs): rs1979855 (5' near gene), rs1049007 (Ser87Ser), rs235767 (intron), rs1005464 (intron), rs235768 (Arg190Ser), and rs3178250 (3; untranslated region). RESULTS Among the six SNPs tested, the rs235767, rs1005464, and rs3178250 SNPs were significantly associated with AR (P < .05). The rs1049007 and rs235768 SNPs also showed an association with GD (P < .05). CONCLUSIONS In conclusion, these results suggest that the BMP2 gene polymorphism may be related to the development of AR and GD in kidney transplant recipients.
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Affiliation(s)
- M-S Park
- Department of Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S K Kim
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - H J Park
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - H Seok
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S W Kang
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S H Lee
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Y G Kim
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J Y Moon
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - T H Kim
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - Y H Kim
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - S W Kang
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - J-H Chung
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
| | - K H Jeong
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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Lee YY, Yoon W, Kim SK, Baek BH, Kim GS, Kim JT, Park MS. Acute Basilar Artery Occlusion: Differences in Characteristics and Outcomes after Endovascular Therapy between Patients with and without Underlying Severe Atherosclerotic Stenosis. AJNR Am J Neuroradiol 2017; 38:1600-1604. [PMID: 28546252 DOI: 10.3174/ajnr.a5233] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 03/24/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Prediction of underlying intracranial atherosclerotic stenosis before endovascular therapy might be helpful for appropriate therapeutic planning in patients with acute ischemic stroke. This study aimed to compare the characteristics and treatment outcomes in patients with acute basilar artery occlusion relative to the existence or nonexistence of underlying intracranial atherosclerotic stenosis. MATERIALS AND METHODS Sixty-two patients with acute basilar artery occlusion underwent multimodal endovascular therapy. All patients underwent stent-retriever thrombectomy as a first-line endovascular therapy. Patients with underlying intracranial atherosclerotic stenosis underwent additional intracranial angioplasty and stent placement. The clinical and imaging characteristics and treatment outcomes were retrospectively analyzed and compared between patients with and without intracranial atherosclerotic stenosis. RESULTS Underlying intracranial atherosclerotic stenosis was identified at the occlusion site in 15 patients (24.1%). Occlusion in the proximal segment of the basilar artery was more common in patients with intracranial atherosclerotic stenosis (60% versus 6.4%, P < .001), whereas occlusion in the distal segment was more common in those without it (91.5% versus 26.7%, P < .001). Bilateral thalamic infarction on a pretreatment DWI was less common in patients with intracranial atherosclerotic stenosis (0% versus 27.7%, P = .027) compared with those without it. There were no significant differences in the rates of successful revascularization, favorable outcome, symptomatic hemorrhage, and mortality between the 2 groups. CONCLUSIONS Underlying intracranial atherosclerotic stenosis was not uncommon in patients with acute basilar artery occlusion. The occlusion segment of the basilar artery and the presence or absence of bilateral thalamic infarction on a pretreatment DWI might be helpful for predicting underlying intracranial atherosclerotic stenosis in patients with acute basilar artery occlusion. Patients with and without underlying intracranial atherosclerotic stenosis who underwent endovascular therapy had similar outcomes.
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Affiliation(s)
- Y Y Lee
- From the Departments of Radiology (Y.Y.L., W.Y., S.K.K., B.H.B., G.S.K.)
| | - W Yoon
- From the Departments of Radiology (Y.Y.L., W.Y., S.K.K., B.H.B., G.S.K.)
| | - S K Kim
- From the Departments of Radiology (Y.Y.L., W.Y., S.K.K., B.H.B., G.S.K.)
| | - B H Baek
- From the Departments of Radiology (Y.Y.L., W.Y., S.K.K., B.H.B., G.S.K.)
| | - G S Kim
- From the Departments of Radiology (Y.Y.L., W.Y., S.K.K., B.H.B., G.S.K.)
| | - J T Kim
- Neurology (J.T.K., M.S.P.), Chonnam National University Medical School, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - M S Park
- Neurology (J.T.K., M.S.P.), Chonnam National University Medical School, Chonnam National University Hospital, Gwangju, Republic of Korea
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Kim SK, Kim SG, HwangBo G. The effect of horse-riding simulator exercise on the gait, muscle strength and muscle activation in elderly people with knee osteoarthritis. J Phys Ther Sci 2017; 29:693-696. [PMID: 28533611 PMCID: PMC5430274 DOI: 10.1589/jpts.29.693] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/10/2017] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The aim of this study was to examine the effects of horse-riding simulator
exercise on gait ability and muscle strength, muscle activation in elderly with knee
osteoarthritis. [Subjects and Methods] Thirty elderly patients with knee osteoarthritis
were recruited, a horse-riding simulator group consisted of fifteen subjects and they
performed exercise three times a week for eight weeks. And each exercise was performed,
horse riding simulator exercise for 15 minutes and knee strengthening exercise for 15
minutes. Knee strengthening exercise group consisted of fifteen subjects and performed
knee strengthening exercise for 30 minutes. [Results] The horse-riding simulator group
showed significant differences after the intervention in timed 10-meter walk test (10MWT),
muscle strength, muscle activation. [Conclusion] The results of this study indicate that
horse-riding simulator exercise is effective on knee osteoarthritis. Therefore,
horse-riding simulator exercise can be used for gait training for knee osteoarthritis.
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Affiliation(s)
- Seung-Kyu Kim
- Department of Rehabilitation Science, Graduate School, Daegu University, Republic of Korea
| | - Seong-Gil Kim
- Department of Physical Therapy, Uiduk University, Republic of Korea
| | - Gak HwangBo
- Department of Rehabilitation Science, Graduate School, Daegu University, Republic of Korea
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Kim SK, Park I, Hur N, Choe JH, Kim JH, Kim JS. Patterns, predictive factors and prognostic impact of multilevel metastasis in N1b papillary thyroid carcinoma. Br J Surg 2017; 104:857-867. [PMID: 28295219 DOI: 10.1002/bjs.10514] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/18/2016] [Accepted: 01/28/2017] [Indexed: 11/09/2022]
Abstract
BACKGROUND The patterns, predictive factors and prognostic impact of multilevel metastasis in patients with N1b papillary thyroid carcinoma (PTC) were investigated. METHODS A retrospective review of patients with N1b PTC from a tertiary referral centre in Korea who underwent unilateral modified radical neck dissection was undertaken. RESULTS Of 658 patients, multilevel metastasis was found in 73·9 per cent; the most common type was metastasis in two levels. Tumour size per 0·1-cm increment (adjusted odds ratio (OR) 1·33, 95 per cent c.i. 1·08 to 1·64), microscopic extrathyroidal extension (adjusted OR 1·72, 1·10 to 2·71), gross extrathyroidal extension (adjusted OR 2·35, 1·24 to 4·46), unilateral central lymph node metastasis (adjusted OR 2·45, 1·53 to 3·92) and bilateral central lymph node metastasis (adjusted OR 4·06, 2·29 to 7·18) were independent predictors of multilevel metastasis. Only four-level metastasis significantly increased the risk of overall locoregional recurrence (LRR) (adjusted hazard ratio (HR) 7·41, 95 per cent c.i. 2·20 to 24·53) and lateral neck LRR (adjusted HR 7·22, 1·82 to 28·65), compared with one-level metastasis. Two subgroup analyses were conducted, showing that only three-level metastasis including metastasis in level V significantly increased the risk of overall LRR (adjusted HR 5·66, 1·20 to 26·75). In addition, having level V metastasis was an independent predictor of both overall (adjusted HR 3·26, 1·72 to 6·18; P < 0·001) and lateral neck (adjusted HR 3·28, 1·50 to 7·16; P = 0·003) LRR. CONCLUSION Level V metastasis rather than multilevel metastasis itself is associated with an increased risk of LRR. Patients with N1b PTC and level V metastasis require risk restratification and meticulous follow-up.
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Affiliation(s)
- S K Kim
- Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - I Park
- Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - N Hur
- Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - J-H Choe
- Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - J-H Kim
- Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - J S Kim
- Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
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Jung SY, Lee S, Kim SK. Abstract P1-11-10: Clinical applications of near infra-red imaging system for localization of non-palpable breast lesions in breast conserving surgery. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p1-11-10] [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: 11/16/2022]
Abstract
Abstract
Backgrounds: Localization of non-palpable breast lesions is important for obtaining tumor-free resection margin and achieving better cosmetic outcome. Near infra-red (NIR) imaging system has been introduced for localization in breast surgery. This study aimed to evaluate the feasibility of localization using NIR imaging system in breast conserving surgery (BCS) (ClinicalTrials.gov identifier: NCT 02172989/ NCT02473159).
Materials and Methods: Between June 2014 and October 2015, 20 women with benign neoplasm and 5 patients with early breast cancer were enrolled and underwent BCS using NIR imaging system. Before surgery, Indocyanine green was injected intratumoraly in benign lesions and peritumoraly for resection margins in early breast cancer. Their pathologic results for resection volume and re-excision rate were compared with those of the patients with 99 benign neoplasm and 203 early breast cancer who were treated with BCS by conventional method, respectively.
Results: In the patients with benign lesions, the mean size in sonography was 1.48±0.98 cm in NIR group and 1.32±0.96cm in conventional group (P=0.4). There was no difference of pathologic lesion size and excised specimen size between these groups (1.57±0.78 cm vs 1.42±0.80 cm in pathologic lesion size; P=0.63, 4.28± 0.48 cm vs 4.15±1.37 cm in specimen size; P=0.73). In NIR group, the ratio of excised specimen/lesion was lesser than that of conventional group (3.19 ±1.40 vs 4.31±3.86; P=0.008). In addition, positive margin rate after BCS in early breast cancer patients was 0% in NIG group and 19.7% in conventional group. And re-excision rate was 0% and 4.4%, respectively.
Conclusions: This study showed that localization using NIR image system could be a feasible method to obtain safe resection margins and optimum resection volumes in patients undergoing breast conserving surgery.
This research was supported by National Cancer Center Grant NCC-1410202-1 & NCC-1410202-2 by the National Cancer Center, Republic of Korea.
Citation Format: Jung S-Y, Lee S, Kim SK. Clinical applications of near infra-red imaging system for localization of non-palpable breast lesions in breast conserving surgery [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P1-11-10.
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Affiliation(s)
- S-Y Jung
- National Cancer Center, Goyang, Korea
| | - S Lee
- National Cancer Center, Goyang, Korea
| | - SK Kim
- National Cancer Center, Goyang, Korea
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Lee HJ, Kim TH, Kang SW, Kim YH, Kim SK, Chung JH, Kim YG, Moon JY, Lee SH, Ihm CG, Lee TW, Jeong KH. Association Interleukin-4 and Interleukin-4 Receptor Gene Polymorphism and Acute Rejection and Graft Dysfunction After Kidney Transplantation. Transplant Proc 2017; 48:813-9. [PMID: 27234743 DOI: 10.1016/j.transproceed.2015.12.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 11/25/2015] [Accepted: 12/30/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Cytokine genotypes have previously been studied in patients undergoing solid organ transplantation; certain polymorphisms have been implicated in the development of acute rejection (AR) and graft dysfunction (GD). Allograft outcomes determined, in part, by alloimmune responses is mainly mediated by T-cell responses, activated and driven by cytokines. Interleukin-4 (IL-4) is one such cytokine, which exerts its biological effects through binding to the IL-4 receptor (IL-4R) complex on target cells. In the present study, we investigated whether polymorphisms of the IL-4 and/or IL-4R gene were associated with susceptibility to acute AR and GD after kidney transplantation. METHODS We analyzed 2 single nucleotide polymorphism (SNPs) of IL-4 (rs2243250 and rs2070874) and 3 SNPs of IL-4R (rs1801275, rs2107356, and rs1805010) in 344 kidney transplant recipients. These patients included 62 of whom had developed AR and 215 of whom had GD in 1 year after kidney transplantation. RESULTS The AR group included 62 patients (45 men and 17 women). There was a statistically significant difference in the male-to-female ratio and the use of tacrolimus in the AR group. The GD group included 215 patients. Patients who developed GD were more likely to be older and have an underlying cause of end-stage renal disease that was unknown compared with patients who did not have GD, the cause of which was typically known. Among the SNPs examined, 1 of the SNPs in the IL-4R gene (ie, rs1801275) showed a statistical association with AR (co-dominant model, P = .061; dominant model, P = .019; and log-addictive model, P = .029). In addition, 1 of the IL-4R SNPs (ie, rs2107356) was statistically associated with GD (dominant model, P = .034). No significant difference in the IL-4 genotype was observed between the AR/GD and non-AR/non-GD subjects. CONCLUSIONS One IL-4R gene polymorphism (rs1801275) was associated with AR. In addition, a separate IL-4R SNP (rs2107356) was statistically associated with GD after kidney transplantation.
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Affiliation(s)
- H J Lee
- Department of Nephrology, Seoul Red Cross Hospital, Seoul, Republic of Korea
| | - T H Kim
- Department of Nephrology, School of Medicine, Inje University, Busan, Republic of Korea
| | - S W Kang
- Department of Nephrology, School of Medicine, Inje University, Busan, Republic of Korea
| | - Y H Kim
- Department of Nephrology, School of Medicine, Inje University, Busan, Republic of Korea
| | - S K Kim
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J-H Chung
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Y G Kim
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J Y Moon
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S H Lee
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - C G Ihm
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - T W Lee
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - K H Jeong
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
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Kim SK, HwangBo G. The effects of horse-riding simulator exercise on balance in elderly with knee osteoarthritis. J Phys Ther Sci 2017; 29:387-389. [PMID: 28356616 PMCID: PMC5360995 DOI: 10.1589/jpts.29.387] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 11/18/2016] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The aim of this study was to examine the effects of horse-riding simulator
exercise on balance in elderly with knee osteoarthritis. [Subjects and Methods] Fifty
elderly patients with knee osteoarthritis were recruited, a horse-riding simulator group
performed exercise three times a week for eight weeks. And each exercise was performed for
30 minutes. [Results] The horse-riding simulator group showed significant differences
after the intervention in Short Form Berg Balance Scale, Functional reaching test.
[Conclusion] The results of this study indicate that horse-riding simulator exercise is
effective on knee osteoarthritis. Therefore, horse-riding simulator exercise can be used
balance training for knee osteoarthritis.
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Affiliation(s)
- Seung-Kyu Kim
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Gak HwangBo
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
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Na SS, Kim SK, Jung NJ, Hwangbo G. The relationship between non-affected forelimb exercise and recovery after focal cerebral ischemia in acute phase. J Phys Ther Sci 2017; 29:1821-1823. [PMID: 29184297 PMCID: PMC5684018 DOI: 10.1589/jpts.29.1821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 07/14/2017] [Indexed: 11/24/2022] Open
Abstract
[Purpose] In the present study, we hypothesized that exercise of the nonaffected forelimb
in the early poststroke phase would stimulate the intact hemisphere, thereby influencing
the hemisphere of the infarcted side and improving the performance of the hemiplegic limb.
[Subjects and Methods] Adult male Sprague-Dawley rats (8–10 weeks of age, weighing
250–300 g, n=12) were used and randomly divided into 3 groups: nonaffected forelimb
exercise for 3 days and treadmill exercise 7 days after ischemia (ETF, n=6), resting for 3
days and treadmill exercise 7 days after ischemia (ETN, n=6), and after ischemia 10 days
resting group. To validate nerve growth factor (NGF), western blot analysis was performed.
The results were analyzed using SPSS for Windows version 18.0. and expressed as mean ±
standard deviation (SD). [Results] Early treadmill exercise increased the expression of
NGF protein level in both ETE and ETN groups. Comparing between the nonaffected forelimb
exercise and infarct hemisphere in NGF protein expression, the ETE group showed higher
increase of NGF protein level in right hemisphere than ETN group, but there was no
statistical significance. [Conclusion] The early treadmill exercise increased NGF protein
expression levels in both hemispheres and the nonaffected forelimb exercise in the early
poststroke recovery phase could enhance neuronal recovery after focal ischemia in rat
models.
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Affiliation(s)
- Sang-Su Na
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Seung-Kyu Kim
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Nam-Jin Jung
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Gak Hwangbo
- Department of Rehabilitation Science, Graduate School, Daegu University: 201 Daegudae-ro, Jillyang, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
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Chen SY, Kim SK, Kim KH, Lee IS, HwangBo G. Effects of Horse Riding Simulator on Pain, Oswestry Disability Index and Balance in Adults with Nonspecific Chronic Low Back Pain. ACTA ACUST UNITED AC 2016. [DOI: 10.13066/kspm.2016.11.4.79] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kim SK, Kim KS, Sang HH. Overview on relative importance of house dust ingestion in human exposure to polybrominated diphenyl ethers (PBDEs): International comparison and Korea as a case. Sci Total Environ 2016; 571:82-91. [PMID: 27471979 DOI: 10.1016/j.scitotenv.2016.07.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 07/10/2016] [Accepted: 07/10/2016] [Indexed: 05/02/2023]
Abstract
Human exposure studies to polybrominated diphenyl ethers (PBDEs) have reached different results about the relative importance of diet intake and house dust ingestion. In the present study, concentrations of PBDEs in Korean house dust (n=15) from geographically different cities were measured, which were in agreement with a previous result, and compared with those for 22 countries of five continents collected from the most recent scientific literature. Compared with other exposure pathways, diet intake was the most important contributor to total PBDEs exposure of Korean adults (i.e., 71% of overall intake). On global comparison, total PBDE levels in house dust differed by two to three orders of magnitude among the countries investigated, with a significant relationship with gross domestic product (GDP). Whereas, dietary daily intakes exhibited a narrow difference within one order of magnitude worldwide and no relationship with GDP. Consequently, the relative importance of major two pathways depended on the contamination extent of PBDEs in house dust, which may be associated with the amount of PBDE products in use. In most countries except for UK and USA, the contribution of house dust ingestion was less important than diet intake in the current and are expected to much more mitigate in the future. However, how fast the effect of regulation will be reflected to house dust and human exposure is necessary to be monitored steadily.
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Affiliation(s)
- Seung-Kyu Kim
- Department of Marine Science, College of Natural Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, 119 Academy-ro (Songdo-dong), Yeonsu-gu, Incheon 22012, Republic of Korea.
| | - Kyoung-Soo Kim
- Battey R&D, Samsung SDI, 130 Samsung-ro, Yeongtong-gu, Gyeonggi-do, Suwon 443-803, Republic of Korea
| | - Hee Hong Sang
- Oil and POPs Research Group, Korean Institute of Ocean Science and Technology, Geoje-shi 656-834, Republic of Korea
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Song EK, Agrawal PR, Kim SK, Seo HY, Seon JK. A randomized controlled clinical and radiological trial about outcomes of navigation-assisted TKA compared to conventional TKA: long-term follow-up. Knee Surg Sports Traumatol Arthrosc 2016; 24:3381-3386. [PMID: 26831857 DOI: 10.1007/s00167-016-3996-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [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: 07/03/2015] [Accepted: 01/13/2016] [Indexed: 11/24/2022]
Abstract
PURPOSE Well balanced knees with good alignment are essential for a well-functioning TKA with long survival of its implants. This prospective randomized study comparing navigation-assisted TKA and conventional TKA reported the clinical and radiological outcomes at a follow-up of 9 years. The purpose of this study was to compare the clinical and radiological outcomes for patients who underwent navigation-assisted TKA or conventional TKA after long-term follow-up. METHODS A total of 80 patients (88 knees) were available for physical and radiological examination 9 years after TKA. Clinical outcomes were evaluated using HSS, WOMAC, and KS function and pain scores. And radiological outcomes of the component loosening and its survivorship during 9-year follow-up were also evaluated. RESULTS There were no significant differences in the field of clinical outcomes between the two groups. In terms of radiological outcomes, the navigation group had fewer alignment outliers (7.3 vs 20 %, p = 0.006). Although the clinical outcomes showed no differences between the two groups, the survival rate was slightly better in the navigation group than in the conventional group without statistical significance (best-case scenario 100 vs 95.3 %, n.s., worst-case scenario 95.6 vs 88.4 %, n.s.). CONCLUSION Navigation-assisted TKA produced better alignment outcomes and better survival rates than conventional instruments although some of the differences were not statistically significant. LEVEL OF EVIDENCE I.
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Affiliation(s)
- E K Song
- Department of Orthopedic Surgery, Center for Joint Disease, Chonnam National University Hwasun Hospital, 160Ilsimri, Hwasun-eup, Hwasun-gun, Jeollanamdo, 519-809, South Korea
| | - Pranav R Agrawal
- Department of Orthopedic Surgery, Center for Joint Disease, Chonnam National University Hwasun Hospital, 160Ilsimri, Hwasun-eup, Hwasun-gun, Jeollanamdo, 519-809, South Korea
| | - S K Kim
- Department of Orthopedic Surgery, Chonnam National University Hospital, Gwangju, South Korea
| | - H Y Seo
- Department of Orthopedic Surgery, Chonnam National University Hospital, Gwangju, South Korea
| | - J K Seon
- Department of Orthopedic Surgery, Center for Joint Disease, Chonnam National University Hwasun Hospital, 160Ilsimri, Hwasun-eup, Hwasun-gun, Jeollanamdo, 519-809, South Korea.
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