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Lee J, Kim JH, Chu HBK, Oh ST, Kang SB, Lee S, Kim DW, Oh HK, Park JH, Kim J, Kang J, Lee JY, Cho S, Shim H, Lee HS, Kim SY, Kim YJ, Yang JO, Lee KY. Comprehensive RNA-sequencing analysis of colorectal cancer in a Korean cohort. Mol Cells 2024; 47:100033. [PMID: 38403196 PMCID: PMC11004400 DOI: 10.1016/j.mocell.2024.100033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/07/2024] [Accepted: 02/14/2024] [Indexed: 02/27/2024] Open
Abstract
Considering the recent increase in the number of colorectal cancer (CRC) cases in South Korea, we aimed to clarify the molecular characteristics of CRC unique to the Korean population. To gain insights into the complexities of CRC and promote the exchange of critical data, RNA-sequencing analysis was performed to reveal the molecular mechanisms that drive the development and progression of CRC; this analysis is critical for developing effective treatment strategies. We performed RNA-sequencing analysis of CRC and adjacent normal tissue samples from 214 Korean participants (comprising a total of 381 including 169 normal and 212 tumor samples) to investigate differential gene expression between the groups. We identified 19,575 genes expressed in CRC and normal tissues, with 3,830 differentially expressed genes (DEGs) between the groups. Functional annotation analysis revealed that the upregulated DEGs were significantly enriched in pathways related to the cell cycle, DNA replication, and IL-17, whereas the downregulated DEGs were enriched in metabolic pathways. We also analyzed the relationship between clinical information and subtypes using the Consensus Molecular Subtype (CMS) classification. Furthermore, we compared groups clustered within our dataset to CMS groups and performed additional analysis of the methylation data between DEGs and CMS groups to provide comprehensive biological insights from various perspectives. Our study provides valuable insights into the molecular mechanisms underlying CRC in Korean patients and serves as a platform for identifying potential target genes for this disease. The raw data and processed results have been deposited in a public repository for further analysis and exploration.
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Affiliation(s)
- Jaeim Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu 11765, Republic of Korea.
| | - Jong-Hwan Kim
- Korea Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
| | - Hoang Bao Khanh Chu
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Seong-Taek Oh
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu 11765, Republic of Korea.
| | - Sung-Bum Kang
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Republic of Korea.
| | - Sejoon Lee
- Precision Medicine Center, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea.
| | - Duck-Woo Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Republic of Korea.
| | - Heung-Kwon Oh
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Republic of Korea.
| | - Ji-Hwan Park
- Korea Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
| | - Jisu Kim
- Korea Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
| | - Jisun Kang
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Jin-Young Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Sheehyun Cho
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Hyeran Shim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Hong Seok Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Seon-Young Kim
- Korea Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
| | - Young-Joon Kim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea; LepiDyne Co., Ltd., Seoul 04779, Republic of Korea.
| | - Jin Ok Yang
- Korea Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
| | - Kil-Yong Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu 11765, Republic of Korea.
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2
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Albanese R, Alexandrov A, Alicante F, Anokhina A, Asada T, Battilana C, Bay A, Betancourt C, Biswas R, Blanco Castro A, Bogomilov M, Bonacorsi D, Bonivento WM, Bordalo P, Boyarsky A, Buontempo S, Campanelli M, Camporesi T, Canale V, Castro A, Centanni D, Cerutti F, Chernyavskiy M, Choi KY, Cholak S, Cindolo F, Climescu M, Conaboy AP, Dallavalle GM, Davino D, de Bryas PT, De Lellis G, De Magistris M, De Roeck A, De Rújula A, De Serio M, De Simone D, Di Crescenzo A, Donà R, Durhan O, Fabbri F, Fedotovs F, Ferrillo M, Ferro-Luzzi M, Fini RA, Fiorillo A, Fresa R, Funk W, Garay Walls FM, Golovatiuk A, Golutvin A, Graverini E, Guler AM, Guliaeva V, Haefeli GJ, Helo Herrera JC, van Herwijnen E, Iengo P, Ilieva S, Infantino A, Iuliano A, Jacobsson R, Kamiscioglu C, Kauniskangas AM, Khalikov E, Kim SH, Kim YG, Klioutchnikov G, Komatsu M, Konovalova N, Kovalenko S, Kuleshov S, Lacker HM, Lantwin O, Lasagni Manghi F, Lauria A, Lee KY, Lee KS, Lo Meo S, Loschiavo VP, Marcellini S, Margiotta A, Mascellani A, Miano A, Mikulenko A, Montesi MC, Navarria FL, Ogawa S, Okateva N, Ovchynnikov M, Paggi G, Park BD, Pastore A, Perrotta A, Podgrudkov D, Polukhina N, Prota A, Quercia A, Ramos S, Reghunath A, Roganova T, Ronchetti F, Rovelli T, Ruchayskiy O, Ruf T, Sabate Gilarte M, Samoilov M, Scalera V, Schneider O, Sekhniaidze G, Serra N, Shaposhnikov M, Shevchenko V, Shchedrina T, Shchutska L, Shibuya H, Simone S, Siroli GP, Sirri G, Soares G, Soto Sandoval OJ, Spurio M, Starkov N, Timiryasov I, Tioukov V, Tramontano F, Trippl C, Ursov E, Ustyuzhanin A, Vankova-Kirilova G, Verguilov V, Viegas Guerreiro Leonardo N, Vilela C, Visone C, Wanke R, Yaman E, Yazici C, Yoon CS, Zaffaroni E, Zamora Saa J. Observation of Collider Muon Neutrinos with the SND@LHC Experiment. Phys Rev Lett 2023; 131:031802. [PMID: 37540851 DOI: 10.1103/physrevlett.131.031802] [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: 05/17/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 08/06/2023]
Abstract
We report the direct observation of muon neutrino interactions with the SND@LHC detector at the Large Hadron Collider. A dataset of proton-proton collisions at sqrt[s]=13.6 TeV collected by SND@LHC in 2022 is used, corresponding to an integrated luminosity of 36.8 fb^{-1}. The search is based on information from the active electronic components of the SND@LHC detector, which covers the pseudorapidity region of 7.2<η<8.4, inaccessible to the other experiments at the collider. Muon neutrino candidates are identified through their charged-current interaction topology, with a track propagating through the entire length of the muon detector. After selection cuts, 8 ν_{μ} interaction candidate events remain with an estimated background of 0.086 events, yielding a significance of about 7 standard deviations for the observed ν_{μ} signal.
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Affiliation(s)
- R Albanese
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | | | - F Alicante
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - A Anokhina
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - T Asada
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - C Battilana
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - A Bay
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - C Betancourt
- Physik-Institut, Universität Zürich, 8057 Zürich, Switzerland
| | - R Biswas
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - A Blanco Castro
- Laboratory of Instrumentation and Experimental Particle Physics (LIP), 1649-003 Lisbon, Portugal
| | - M Bogomilov
- Faculty of Physics, Sofia University, 1164 Sofia, Bulgaria
| | - D Bonacorsi
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - W M Bonivento
- Università degli Studi di Cagliari, 09124 Cagliari, Italy
| | - P Bordalo
- Laboratory of Instrumentation and Experimental Particle Physics (LIP), 1649-003 Lisbon, Portugal
| | - A Boyarsky
- University of Leiden, 2300 RA Leiden, The Netherlands
- Taras Shevchenko National University of Kyiv, 01033 Kyiv, Ukraine
| | | | - M Campanelli
- University College London, WC1E 6BT London, United Kingdom
| | - T Camporesi
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - V Canale
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - A Castro
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - D Centanni
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli Parthenope, 80143 Napoli, Italy
| | - F Cerutti
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - M Chernyavskiy
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - K-Y Choi
- Sungkyunkwan University, 16419 Suwon-si, Gyeong Gi-do, Korea
| | - S Cholak
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - F Cindolo
- Sezione INFN di Bologna, Bologna, Italy
| | - M Climescu
- Institut für Physik and PRISMA Cluster of Excellence, Johannes Gutenberg Universität Mainz, 55099 Mainz, Germany
| | - A P Conaboy
- Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | | | - D Davino
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università del Sannio, 82100 Benevento, Italy
| | - P T de Bryas
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - G De Lellis
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - M De Magistris
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli Parthenope, 80143 Napoli, Italy
| | - A De Roeck
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - A De Rújula
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - M De Serio
- Sezione INFN di Bari, 70126 Bari, Italy
- Università di Bari, 70126 Bari, Italy
| | - D De Simone
- Physik-Institut, Universität Zürich, 8057 Zürich, Switzerland
| | - A Di Crescenzo
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - R Donà
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - O Durhan
- Middle East Technical University (METU), 06800 Ankara, Turkey
| | - F Fabbri
- Sezione INFN di Bologna, Bologna, Italy
| | - F Fedotovs
- University College London, WC1E 6BT London, United Kingdom
| | - M Ferrillo
- Physik-Institut, Universität Zürich, 8057 Zürich, Switzerland
| | - M Ferro-Luzzi
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - R A Fini
- Sezione INFN di Bari, 70126 Bari, Italy
| | - A Fiorillo
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - R Fresa
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università della Basilicata, 85100 Potenza, Italy
| | - W Funk
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - F M Garay Walls
- Departamento de Física, Pontificia Universidad Católica de Chile, 4860 Santiago, Chile
| | - A Golovatiuk
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - A Golutvin
- Imperial College London, SW7 2AZ London, United Kingdom
| | - E Graverini
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - A M Guler
- Middle East Technical University (METU), 06800 Ankara, Turkey
| | - V Guliaeva
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - G J Haefeli
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - J C Helo Herrera
- Millennium Institute for Subatomic physics at high energy frontier-SAPHIR, Fernandez Concha 700, 7591538 Santiago, Chile
- Departamento de Física, Facultad de Ciencias, Universidad de La Serena, Avenida Cisternas 1200, La Serena, Chile
| | | | - P Iengo
- Sezione INFN di Napoli, 80126 Napoli, Italy
| | - S Ilieva
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
- Faculty of Physics, Sofia University, 1164 Sofia, Bulgaria
| | - A Infantino
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - A Iuliano
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - R Jacobsson
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - C Kamiscioglu
- Middle East Technical University (METU), 06800 Ankara, Turkey
- Ankara University, 06100 Ankara, Turkey
| | - A M Kauniskangas
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - E Khalikov
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - S H Kim
- Department of Physics Education and RINS, Gyeongsang National University, 52828 Jinju, Korea
| | - Y G Kim
- Gwangju National University of Education, 61204 Gwangju, Korea
| | - G Klioutchnikov
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - M Komatsu
- Nagoya University, 464-8602 Nagoya, Japan
| | - N Konovalova
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - S Kovalenko
- Millennium Institute for Subatomic physics at high energy frontier-SAPHIR, Fernandez Concha 700, 7591538 Santiago, Chile
- Center for Theoretical and Experimental Particle Physics, Facultad de Ciencias Exactas, Universidad Andrés Bello, Fernandez Concha 700, Santiago, Chile
| | - S Kuleshov
- Millennium Institute for Subatomic physics at high energy frontier-SAPHIR, Fernandez Concha 700, 7591538 Santiago, Chile
- Center for Theoretical and Experimental Particle Physics, Facultad de Ciencias Exactas, Universidad Andrés Bello, Fernandez Concha 700, Santiago, Chile
| | - H M Lacker
- Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - O Lantwin
- Affiliated with an institute covered by a cooperation agreement with CERN
| | | | - A Lauria
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - K Y Lee
- Department of Physics Education and RINS, Gyeongsang National University, 52828 Jinju, Korea
| | - K S Lee
- Korea University, 02841 Seoul, Korea
| | - S Lo Meo
- Sezione INFN di Bologna, Bologna, Italy
| | - V P Loschiavo
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università del Sannio, 82100 Benevento, Italy
| | | | - A Margiotta
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - A Mascellani
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - A Miano
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - A Mikulenko
- University of Leiden, 2300 RA Leiden, The Netherlands
| | - M C Montesi
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - F L Navarria
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - S Ogawa
- Toho University, 274-8510 Funabashi, Chiba, Japan
| | - N Okateva
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - M Ovchynnikov
- University of Leiden, 2300 RA Leiden, The Netherlands
| | - G Paggi
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - B D Park
- Department of Physics Education and RINS, Gyeongsang National University, 52828 Jinju, Korea
| | - A Pastore
- Sezione INFN di Bari, 70126 Bari, Italy
| | | | - D Podgrudkov
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - N Polukhina
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - A Prota
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - A Quercia
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - S Ramos
- Laboratory of Instrumentation and Experimental Particle Physics (LIP), 1649-003 Lisbon, Portugal
| | - A Reghunath
- Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - T Roganova
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - F Ronchetti
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - T Rovelli
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - O Ruchayskiy
- Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
| | - T Ruf
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - M Sabate Gilarte
- European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
| | - M Samoilov
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - V Scalera
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli Parthenope, 80143 Napoli, Italy
| | - O Schneider
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | | | - N Serra
- Physik-Institut, Universität Zürich, 8057 Zürich, Switzerland
| | - M Shaposhnikov
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - V Shevchenko
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - T Shchedrina
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - L Shchutska
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - H Shibuya
- Toho University, 274-8510 Funabashi, Chiba, Japan
- Constructor University, Campus Ring 1, Bremen 28759, Germany
| | - S Simone
- Sezione INFN di Bari, 70126 Bari, Italy
- Università di Bari, 70126 Bari, Italy
| | - G P Siroli
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - G Sirri
- Sezione INFN di Bologna, Bologna, Italy
| | - G Soares
- Laboratory of Instrumentation and Experimental Particle Physics (LIP), 1649-003 Lisbon, Portugal
| | - O J Soto Sandoval
- Millennium Institute for Subatomic physics at high energy frontier-SAPHIR, Fernandez Concha 700, 7591538 Santiago, Chile
- Departamento de Física, Facultad de Ciencias, Universidad de La Serena, Avenida Cisternas 1200, La Serena, Chile
| | - M Spurio
- Sezione INFN di Bologna, Bologna, Italy
- Università di Bologna, Bologna, Italy
| | - N Starkov
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - I Timiryasov
- Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
| | - V Tioukov
- Sezione INFN di Napoli, 80126 Napoli, Italy
| | | | - C Trippl
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - E Ursov
- Affiliated with an institute covered by a cooperation agreement with CERN
| | - A Ustyuzhanin
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Constructor University, Campus Ring 1, Bremen 28759, Germany
| | | | - V Verguilov
- Faculty of Physics, Sofia University, 1164 Sofia, Bulgaria
| | | | - C Vilela
- Laboratory of Instrumentation and Experimental Particle Physics (LIP), 1649-003 Lisbon, Portugal
| | - C Visone
- Sezione INFN di Napoli, 80126 Napoli, Italy
- Università di Napoli "Federico II", 80126 Napoli, Italy
| | - R Wanke
- Institut für Physik and PRISMA Cluster of Excellence, Johannes Gutenberg Universität Mainz, 55099 Mainz, Germany
| | - E Yaman
- Middle East Technical University (METU), 06800 Ankara, Turkey
| | - C Yazici
- Middle East Technical University (METU), 06800 Ankara, Turkey
| | - C S Yoon
- Department of Physics Education and RINS, Gyeongsang National University, 52828 Jinju, Korea
| | - E Zaffaroni
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - J Zamora Saa
- Millennium Institute for Subatomic physics at high energy frontier-SAPHIR, Fernandez Concha 700, 7591538 Santiago, Chile
- Center for Theoretical and Experimental Particle Physics, Facultad de Ciencias Exactas, Universidad Andrés Bello, Fernandez Concha 700, Santiago, Chile
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Lee KY, Lee J, Oh ST, Lee CS, Kim NS, Song JM, Yoo RN, Choi BJ. Postoperative effects of laparoscopic Hartmann reversal: A multicenter propensity score matched study. PLoS One 2023; 18:e0286562. [PMID: 37267375 DOI: 10.1371/journal.pone.0286562] [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] [Received: 02/24/2023] [Accepted: 05/18/2023] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND Although the advantages of laparoscopic Hartmann reversal (LHR) compared to open Hartmann reversal (OHR) have been reported in the literature, the number of multicenter studies with good matching investigating this topic is rare. In the present study, we aimed to confirm the advantages of LHR in terms of short-term outcomes through propensity score matching of LHR and OHR groups, using data collected from multiple institutions. METHODS Patients who underwent Hartmann reversal at six institutions under the Catholic Medical Center of the Catholic University of Korea between January 1, 2005, and December 31, 2021, were included. The patients were divided into the LHR and OHR groups based on the technique used. The two groups were matched using propensity score matching (1:1 ratio, logistic regression with the nearest-neighbor method). The primary outcome was postoperative ileus (POI) frequency, and secondary outcomes were time to solid diet (days) and length of stay (days). RESULTS Among 337 patients, propensity score matching was performed on 322, after excluding 15 who had undergone open conversion. Of these, 63 patients were assigned to each group through propensity score matching. There was no difference in the frequency of adhesiolysis (77.8% vs. 82.5%, p = 0.503) or the operation time. (210 (IQR 159-290) vs. 233 (IQR 160-280), p = 0.718) between the two groups. As the primary outcome, the LHR group showed significantly lower POI frequency than the OHR group. (4.8% vs. 22.2%, p = 0.0041) Regarding the secondary outcomes, the LHR group showed a shorter period to solid diet than the OHR group. The length of hospital stay was also significantly shorter in the LHR group (4 vs. 6, p < 0.0001; 9 vs. 12, p<0.0001). CONCLUSION LHR is an effective method to ensure faster recovery of patients after surgery compared to OHR.
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Affiliation(s)
- Kil-Yong Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Republic of Korea
| | - Jaeim Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Republic of Korea
| | - Seong Taek Oh
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Republic of Korea
| | - Chul Seung Lee
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Nam Suk Kim
- Department of Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ju Myung Song
- Department of Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Ri-Na Yoo
- Department of Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Republic of Korea
| | - Byung Jo Choi
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
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Lee KY, Sung TS, Koh BH, Ryoo SB, Chun JN, Kim SH, Park KJ, So I. Distribution and Function of Platelet-derived Growth Factor Receptor Alpha-positive Cells and Purinergic Neurotransmission in the Human Colon: Is It Different Between the Right and Left Colon? J Neurogastroenterol Motil 2022; 28:678-692. [PMID: 36250374 PMCID: PMC9577575 DOI: 10.5056/jnm21117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/17/2022] [Indexed: 11/23/2022] Open
Abstract
Background/Aims Platelet-derived growth factor receptor alpha-positive (PDGFRα+) cells function in the purinergic regulation of gastrointestinal motility, and purines are reportedly inhibitory neurotransmitters in the enteric nervous system. We explore the distribution and function of PDGFRα+ cells related to purinergic inhibitory neurotransmission in human right and left colons. Methods Human colonic segments were prepared with mucosa and submucosa intact, and the circular muscle tension and longitudinal muscle tension were recorded. Purinergic neurotransmitters were administered after recording the regular contractions. Immunohistochemistry was performed on the circular muscle layers. Intracellular recording was performed on the colonic muscular layer. SK3, P2RY1, and PDGFR-α mRNA expression was tested by quantitative real-time polymerase chain reaction (qPCR). Results Adenosine triphosphate (ATP) treatment significantly decreased the frequency and area under the curve (AUC) of the segmental contraction in right and left colons. Beta-nicotinamide adenine dinucleotide (β-NAD) decreased the frequency in the right colon and the amplitude, frequency and AUC in the left colon. Apamin significantly increased frequency and AUC in the left colon, and after apamin pretreatment, ATP and β-NAD did not change segmental contractility. Through intracellular recordings, a resting membrane potential decrease occurred after ATP administration; however, the degree of decrease between the right and left colon was not different. PDGFRα+ cells were distributed evenly in the circular muscle layers of right and left colons. SK3, P2RY1, and PDGFRα expression was not different between the right and left colon. Conclusion Purines reduce right and left colon contractility similarly, and purinergic inhibitory neurotransmission can be regulated by PDGFRα+ cells in the human colon.
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Affiliation(s)
- Kil-Yong Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Gyeonggi-do, Korea
| | - Tae Sik Sung
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.,Department of Physiology and Cell Biology, University of Nevada Reno School of Medicine, Reno, NV, USA
| | - Byoung H Koh
- Department of Physiology and Cell Biology, University of Nevada Reno School of Medicine, Reno, NV, USA
| | - Seung-Bum Ryoo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jung Nyeo Chun
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Shin-Hye Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyu Joo Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Insuk So
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
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Kong MG, Suh J, Moon IK, Lee KY, Jang HJ, Kim JS, Choi IJ. Heart failure with improved ejection fraction (HFimpEF) in patients treated with sacubitril/valsartan (SV). Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.967] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
Several studies demonstrated that patients with improvement of left ventricular ejection fraction (LVEF) and symptoms had good prognosis in heart failure with reduced ejection fraction (HFrEF). Based on these results, new classification of HF according to LVEF was currently proposed. Sacubitril/valsartan (SV) is recommended as one of the first-line therapy of HFrEF patients. SV reduced hospitalization for HF and cardiovascular mortality compared to enalapril in PARADIGM-HF trial. However, it is unclear that patients with improvement of LVEF also have better prognosis compared to patients without LVEF improvement among patients treated with SV.
Purpose
We aimed to evaluate the clinical characteristics and outcomes of heart failure with improved ejection fraction (HFimpEF) in heart failure with reduced ejection fraction (HFrEF) patients treated with SV.
Methods
We analyzed 230 patients with HFrEF taking SV in a multicenter retrospective cohort (RECORD-SV registry) from 2017 to 2019. Enrolled 230 patients were performed baseline and 1-year follow-up echocardiography. Based on 2 echocardiographic results, we defined “HFimpEF” as HF with a baseline LVEF ≤40%, ≥10% increase from baseline LVEF and a follow-up measurement of LVEF >40%. Others were defined as “Persistent HFrEF”. We analyzed and compared clinical characteristics and outcomes between two groups. Primary endpoint was a composite outcome of all-cause death and hospitalization for HF (HHF).
Results
From 230 patients, 65 patients with HFimpEF and 165 patients with Persistent HFrEF were analyzed. The median follow-up duration was 557 days (interquartile range 364 to 727 days). Patients with HFimpEF had a higher prevalence of female gender (50.8% vs. 30.3%) and de novo HF (44.6% vs. 21.2%). There were no significant differences for age, etiology (ischemic vs. non-ischemic), diabetes, atrial fibrillation, hypertension, and HF medications including SV dose between two groups. Patients with HFimpEF showed lower rate of all-cause death or HHF as a primary endpoint compared to patients with persistent HFrEF (6.2% vs. 22.4%; IPTW adjusted HR 0.24; 95% CI 0.13–0.46; p<0.001) (Table 1). It was also shown that HFimpEF patients had a reduced risk of primary endpoint in the Kaplan-Meier curves compared with persistent HFrEF (Log-rank p=0.045) (Figure 1). We demonstrated that Non-prior MI (adjusted OR 7.29; 95% CI 1.50–35.36; p=0.014) and de novo HF (adjusted OR 4.33; 95% CI 1.70–11.04; p=0.002) were independent prognostic factors of HFimpEF in HFrEF patients treated with SV.
Conclusions
HFimpEF patients had better clinical outcomes compared to those with persistent HFrEF in HFrEF patients treated with SV. Non-prior MI and de novo HF were independent predictors of HFimpEF in patients treated with SV.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M G Kong
- Soonchunhyang University Hospital , Bucheon , Korea (Republic of)
| | - J Suh
- Soonchunhyang University Hospital , Bucheon , Korea (Republic of)
| | - I K Moon
- Soonchunhyang University Hospital , Bucheon , Korea (Republic of)
| | - K Y Lee
- The Catholic University of Korea Seoul St. Mary's Hospital, Cardiovascular center and cardiology , Seoul , Korea (Republic of)
| | - H J Jang
- Sejong general hospital, Cardiology , Seoul , Korea (Republic of)
| | - J S Kim
- Dongguk University hospital, Cardiology , Ilsan , Korea (Republic of)
| | - I J Choi
- St.Marys Hospital, Cardiology , Incheon , Korea (Republic of)
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6
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Park YY, Lee J, Lee KY, Oh ST. Short-Term Impact of Temporary Shutdown of a University-Affiliated Hospital on Patients With Colorectal Cancer During the Coronavirus Disease 2019 Pandemic. J Korean Med Sci 2022; 37:e173. [PMID: 35638199 PMCID: PMC9151988 DOI: 10.3346/jkms.2022.37.e173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 04/29/2022] [Indexed: 11/20/2022] Open
Abstract
Owing to in-hospital transmission of coronavirus disease 2019 (COVID-19), Uijeongbu St. Mary's Hospital, a university-affiliated hospital in South Korea, was temporarily closed for disinfection in March 2020. This study aimed to investigate the impact of both the hospital shutdown and the prolonged COVID-19 pandemic on short-term outcomes of colorectal cancer (CRC) patients. We retrospectively reviewed the clinicopathologic data of 607 patients who were surgically treated for CRC from May 2018 to September 2021. Nodal upstaging, higher lymphatic invasion and abdominoperineal resection rates for 3 months after the hospital resumed surgery following the shutdown in the first wave of the COVID-19 pandemic were detected, without worse short-term morbidity or mortality. The incidence of adverse pathologic features of CRC such as lymphatic, venous, and perineural invasion was higher throughout the COVID-19 pandemic era. Further follow-up of CRC patients treated in the pandemic era for long-term oncologic outcomes is needed.
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Affiliation(s)
- Youn Young Park
- Department of Surgery, Kyung Hee University Hospital at Gangdong, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Jaeim Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
| | - Kil-Yong Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seong Taek Oh
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Lee KY, Lee J, Park YY, Oh ST. Right colon perforation is associated with the higher mortality compared to left colon perforation. Asian J Surg 2021; 44:1009-1010. [PMID: 34045128 DOI: 10.1016/j.asjsur.2021.04.034] [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] [Received: 03/22/2021] [Accepted: 04/22/2021] [Indexed: 11/25/2022] Open
Affiliation(s)
- Kil-Yong Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
| | - Jaeim Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea.
| | - Youn Young Park
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
| | - Seong Taek Oh
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
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Lee KY, Lee J, Park YY, Oh ST. Effect of the COVID-19 pandemic on surgical treatment of acute appendicitis: A single-center retrospective study. Asian J Surg 2021; 44:800-801. [PMID: 33863628 PMCID: PMC8081671 DOI: 10.1016/j.asjsur.2021.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/29/2022] Open
Affiliation(s)
- Kil-Yong Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
| | - Jaeim Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea.
| | - Youn Young Park
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
| | - Seong Taek Oh
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
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9
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Morikane K, Russo PL, Lee KY, Chakravarthy M, Ling ML, Saguil E, Spencer M, Danker W, Seno A, Charles EE. Expert commentary on the challenges and opportunities for surgical site infection prevention through implementation of evidence-based guidelines in the Asia-Pacific Region. Antimicrob Resist Infect Control 2021; 10:65. [PMID: 33795007 PMCID: PMC8017777 DOI: 10.1186/s13756-021-00916-9] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/26/2021] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Surgical site infections (SSIs) are a significant source of morbidity and mortality in the Asia-Pacific region (APAC), adversely impacting patient quality of life, fiscal productivity and placing a major economic burden on the country's healthcare system. This commentary reports the findings of a two-day meeting that was held in Singapore on July 30-31, 2019, where a series of consensus recommendations were developed by an expert panel composed of infection control, surgical and quality experts from APAC nations in an effort to develop an evidence-based pathway to improving surgical patient outcomes in APAC. METHODS The expert panel conducted a literature review targeting four sentinel areas within the APAC region: national and societal guidelines, implementation strategies, postoperative surveillance and clinical outcomes. The panel formulated a series of key questions regarding APAC-specific challenges and opportunities for SSI prevention. RESULTS The expert panel identified several challenges for mitigating SSIs in APAC; (a) constraints on human resources, (b) lack of adequate policies and procedures, (c) lack of a strong safety culture, (d) limitation in funding resources, (e) environmental and geographic challenges, (f) cultural diversity, (g) poor patient awareness and (h) limitation in self-responsibility. Corrective strategies for guideline implementation in APAC were proposed that included: (a) institutional ownership of infection prevention strategies, (b) perform baseline assessments, (c) review evidence-based practices within the local context, (d) develop a plan for guideline implementation, (e) assess outcome and stakeholder feedback, and (f) ensure long-term sustainability. CONCLUSIONS Reducing the risk of SSIs in APAC region will require: (a) ongoing consultation and collaboration among stakeholders with a high level of clinical staff engagement and (b) a strong institutional and national commitment to alleviate the burden of SSIs by embracing a safety culture and accountability.
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Affiliation(s)
- K Morikane
- Division of Clinical Laboratory and Infection Control, Yamagata University Hospital, Yamagata, Japan
| | - P L Russo
- School of Nursing and Midwifery, Monash University, Frankston, VC, Australia
| | - K Y Lee
- Department of Surgery, KyungHee University Medical Center, Seoul, South Korea
| | | | - M L Ling
- Infection Prevention and Epidemiology, Singapore General Hospital, Singapore, Singapore
| | - E Saguil
- Philippine General Hospital, Manila, Philippines
| | - M Spencer
- Infection Prevention Consultant, Boston, MA, USA
| | - W Danker
- Ethicon, Johnson and Johnson Medical Device Companies, Somerville, NJ, USA
| | - A Seno
- Johnson and Johnson Medical Asia Pacific, Singapore, Singapore
| | - E Edmiston Charles
- Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA.
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10
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Park YY, Lee KY, Oh ST, Park SH, Do Han K, Lee J. Publisher Correction: A link between appendectomy and gastrointestinal cancers: a large-scale population-based cohort study in Korea. Sci Rep 2021; 11:6528. [PMID: 33727608 PMCID: PMC7966372 DOI: 10.1038/s41598-021-85952-6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Youn Young Park
- Division of Coloproctology, Department of Surgery, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Cheonbo‑ro 271, Uijeongbu‑si, Gyeonggi‑do, 11765, Republic of Korea
| | - Kil-Yong Lee
- Division of Coloproctology, Department of Surgery, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Cheonbo‑ro 271, Uijeongbu‑si, Gyeonggi‑do, 11765, Republic of Korea
| | - Seong Taek Oh
- Division of Coloproctology, Department of Surgery, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Cheonbo‑ro 271, Uijeongbu‑si, Gyeonggi‑do, 11765, Republic of Korea
| | - Sang Hyun Park
- Department of Medical Statistics, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea
| | - Kyung Do Han
- Department of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea
| | - Jaeim Lee
- Division of Coloproctology, Department of Surgery, College of Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Cheonbo‑ro 271, Uijeongbu‑si, Gyeonggi‑do, 11765, Republic of Korea.
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11
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Abstract
Background Routine colonoscopy is recommended to determine the coexistence of colon cancer after medical treatment for colon diverticulitis. However, in the case of uncomplicated diverticulitis diagnosed by computed tomography, the clinical relevance of routine follow-up colonoscopy has recently been debated. Yet, the role of follow-up colonoscopy for right colon diverticulitis, which tends to develop at a younger age than left colon diverticulitis, has not been specifically evaluated. Therefore, we aimed to evaluate the incidence of right colon cancer or colonic adenomatous polyps, detected by routine colonoscopy, after conservative management of acute uncomplicated right colon diverticulitis. Methods Patients with uncomplicated right colon diverticulitis (modified Hinchey stage Ia) diagnosed by computed tomography imaging, between 2011 and 2017, and who underwent follow-up colonoscopy surveillance after treatment were included. The primary outcome was the incidence of colon cancer, with the detection rate of adenoma being the secondary outcome. Information for analysis was retrieved retrospectively from patients’ medical records. Results
The study group included 330 consecutive patients, with a mean age of 41.9 years, and 51.9% being men. For the primary outcome, the rate of colon cancer on follow-up colonoscopy was 0.3% (1/330 cases). The rate of adenoma detection was 20.9% (69/330 cases) and advanced adenoma (> 10 mm in diameter; or exhibiting a > 25% villous component or severe dysplasia), including colon cancer, was observed in 9 patients (2.7%). Conclusions In patients with acute uncomplicated right colonic diverticulitis, routine colonoscopy after conservative treatment may be necessary because although the colon cancer detection rate is low, it is possible to detect advanced colon adenoma.
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Affiliation(s)
- Kil-Yong Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-ro, Uijeongbu, Gyeonggi-do, 11765, Korea
| | - Jaeim Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-ro, Uijeongbu, Gyeonggi-do, 11765, Korea.
| | - Youn Young Park
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-ro, Uijeongbu, Gyeonggi-do, 11765, Korea
| | - Seong Taek Oh
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-ro, Uijeongbu, Gyeonggi-do, 11765, Korea
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12
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Lee KY, Lee JI, Park YY, Kim YS, Lee DH, Chae HS, Lee TK, Sohn TS, Jeong SC, Lee YB, Han K. Hemorrhoids Are Associated with Urinary Incontinence. J Womens Health (Larchmt) 2020; 29:1464-1468. [PMID: 32762610 DOI: 10.1089/jwh.2019.8168] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background: Hemorrhoids are a common anal disorder and are more frequent in women than in men. Urinary incontinence (UI) also occurs more frequently in women than in men. Although both diseases share similar risk factors, research on the association between the two diseases is lacking. This study aimed to investigate the relationship between hemorrhoids and UI in adult Korean women. Methods: This study was based on the data of the 2008-2009 Korean National Health and Nutrition Examination Survey. Logistic regression test was performed to determine the relationship between hemorrhoids and UI after adjusting for age, body mass index (BMI), smoking, heavy drinking, physical activity, education level, income, diabetes mellitus, and hypertension. Results: Analysis of the data of 8,139 adult women revealed that the prevalence of hemorrhoids, which were self-reported and diagnosed by a physician, was 17.5% and 7.9%, respectively. Both types of hemorrhoids were more prevalent in older women with spouses, those with a large waist circumference, and those with a high BMI. The prevalence of UI was significantly high in the hemorrhoid group, regardless of whether it was self-reported or diagnosed by a physician. Multiple logistic regression analyses revealed a significant association between the prevalence of UI and hemorrhoids, both of which were found to peak at 19-39 years of age. Conclusions: Our findings demonstrate that hemorrhoids are significantly correlated with UI in adult Korean women. When treating adult women with hemorrhoids, it is, therefore, necessary to consider other pelvic floor diseases such as UI.
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Affiliation(s)
- Kil-Yong Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Jae Im Lee
- Department of Surgery, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu-si, Korea.,Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Youn Young Park
- Department of Surgery, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Young Soo Kim
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Dong-Hee Lee
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Hyun Suk Chae
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Tae-Kyu Lee
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Tae Seo Sohn
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Seong Cheol Jeong
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Young Bok Lee
- Epidemiology Study Cluster of Uijeongbu St. Mary's Hospital, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
| | - Kyungdo Han
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, Uijeongbu-si, Korea
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Lee KY, Lee J, Park YY, Kim Y, Oh ST. Difference in Clinical Features between Right- and Left-Sided Acute Colonic Diverticulitis. Sci Rep 2020; 10:3754. [PMID: 32111862 PMCID: PMC7048749 DOI: 10.1038/s41598-020-60397-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 02/12/2020] [Indexed: 12/11/2022] Open
Abstract
Right colonic diverticulitis (RCD) and left colonic diverticulitis (LCD) may have different clinical features due to the different embryologic origins and anatomical locations of each colon. Therefore, we aimed to compare RCD and LCD in terms of the associated clinical features. We retrospectively collected clinical data from patients who were diagnosed with acute colonic diverticulitis based on computed tomography findings between 2011 and 2017. RCD was defined as colonic diverticulitis extending from the caecum to the transverse colon, and LCD was defined as extending from the splenic flexure to the sigmoid colon. These analyses included 667 patients with RCD and 58 patients with LCD. Relative to the patients with LCD, the patients with RCD were younger (P < 0.001), were more likely to be male (P = 0.033), were taller (P < 0.001), had lower body mass index values (P < 0.001), had less advanced modified Hinchey stages (P < 0.001), and had shorter hospital stays (P < 0.001). Having LCD rather than RCD was a predictor of recurrent colonic diverticulitis (P = 0.003). Relative to LCD, RCD occurs at younger ages, is expressed at less advanced modified Hinchey stages, and is associated with lower risks of recurrence.
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Affiliation(s)
- Kil-Yong Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, South Korea
| | - Jaeim Lee
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, South Korea.
| | - Youn Young Park
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, South Korea
| | - Younglim Kim
- Department of Surgery, Seoul Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea
| | - Seong Taek Oh
- Division of Coloproctology, Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu-si, South Korea
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14
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Ho C, Lee PH, So TC, Chiang MCS, Wong MH, Fong YH, Tsang CF, Cheng YW, Luk NH, Chui SF, Chan KC, Wong CY, Fu CL, Lee KY, Chan KT. 224 Malignancy associated pericardial effusion- do we need to drain them all? Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.009] [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: 11/13/2022] Open
Abstract
Abstract
On Behalf
Cardiac Team, Department of Medicine, Queen Elizabeth Hospital
Background
Management of significant pericardial effusion in cancer patients is controversial. These patients have poor prognosis, and avoiding unnecessary intervention is important. Close monitoring of symptoms and echocardiogram is often a reasonable option, but inherits risk of cardiac tamponade. Whether pericardial drainage by means of percutaneous pericardiocentesis or surgical pericardiotomy could prevent future deterioration or affect survival is unknown.
Purpose
To evaluate the benefit of elective pericardial drainage in malignancy associated pericardial effusion without echocardiographic or clinical evidence of tamponade effect.
Methods
From 1st Jul 2014 to 31st Dec 2017, all patients with new onset malignancy-associated pericardial effusion with size more than 1cm were retrospectively analyzed. Patients with clinical or echocardiographic evidence of cardiac tamponade were excluded. We compared pericardial drainage versus monitoring for short-term (30-day), mid-term (90-day) and long term (1 year) survival without need for drainage.
Results
101 patients were retrospectively analyzed. 40 (39.6%) patients underwent drainage. Overall median survival free from drainage was 4 months. There were no significant difference in short-term (30-day), mid-term (90-day) and long term (1-year) survival free from drainage or mortality between treatment and monitoring group. Size of pericardial effusion did not predict mortality or future need of drainage. Chemotherapy was associated with improved 30-day mortality (RR 0.53 CI 0.32-0.87 p = 0.025) but not survival free from drainage or longer term mortality.
Conclusion
Close monitoring could be a feasible strategy in cancer patients with significant pericardial effusion without tamponade effect.
Baseline characteristics Factor Drainage (n = 40) monitoring (n = 61) p-value method of drainage pericardiocentesis alone 17 NA pericardiotomy alone 13 both 10 Male 19 (47.5%) 27 (44.3%) 0.749 mean size (cm) 1.93 2.77 <0.001 mean age 60.9 63.1 0.357 on chemotherapy 27 (67.5%) 38 (62.3%) 0.593
Abstract 224 Figure. Survival free from drainage
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Affiliation(s)
- C Ho
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - P H Lee
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - T C So
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | | | - M H Wong
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - Y H Fong
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - C F Tsang
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - Y W Cheng
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - N H Luk
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - S F Chui
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - K C Chan
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - C Y Wong
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - C L Fu
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - K Y Lee
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
| | - K T Chan
- Queen Elizabeth Hospital, Hong Kong, Hong Kong
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15
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Ryu JH, Lee KY, Koo TY, Kim DK, Oh KH, Yang J, Park KJ. Outcomes of the surgical management of encapsulating peritoneal sclerosis: A case series from a single center in Korea. Kidney Res Clin Pract 2019; 38:499-508. [PMID: 31640301 PMCID: PMC6913596 DOI: 10.23876/j.krcp.19.044] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 08/21/2019] [Accepted: 09/04/2019] [Indexed: 12/17/2022] Open
Abstract
Background Encapsulating peritoneal sclerosis (EPS) is a rare but near-fatal complication of peritoneal dialysis (PD). Despite the high mortality rate of EPS, the surgical treatment strategy of severe EPS is yet to be established. Methods We retrospectively analyzed outcomes of patients with EPS who underwent enterolysis for intractable EPS at Seoul National University Hospital between 2001 and 2018. EPS was diagnosed based on the clinical symptoms and radiological findings of abdominal computed tomography (CT). CT scans were scored according to an EPS scoring system that assessed peritoneal thickening and calcification as well as bowel thickening, tethering, loculation, and dilatation. Results Thirteen patients (nine males and four females; age, 48 [29–63] years) underwent enterolysis for severe EPS. PD duration (11 [6–21] years) was not associated with survival. Two patients were newly diagnosed with EPS following kidney transplantation. Five patients died of infectious complications immediately after the surgery. Eight patients survived after the first surgery; however, five of them underwent reoperation but died of persistent infection, fistula formation, or adhesive bowel obstruction. Four young (< 60 years) male patients with relatively low CT scan scores (< 13) survived for > 2 years after the first surgery. Median survival duration from EPS diagnosis was 22 (1.3–184) months and that from the first surgery was 9 (0.3–153) months. Conclusion The high mortality rate of EPS suggests the importance of appropriate surgical intervention in young symptomatic male EPS patients with relatively low CT scan scores.
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Affiliation(s)
- Jung-Hwa Ryu
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kil-Yong Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Tai Yeon Koo
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kook-Hwan Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jaeseok Yang
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kyu Joo Park
- Department of Surgery, Seoul National University Hospital, Seoul, Republic of Korea
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16
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Cheng M, Lee KY. Type A aortic dissection involving the superior mesenteric artery with peripheral malperfusion managed with a hybrid approach: a case report. Hong Kong Med J 2019; 25:403-405. [PMID: 31761751 DOI: 10.12809/hkmj177127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- M Cheng
- Department of Surgery, Queen Elizabeth Hospital, Jordan, Hong Kong
| | - K Y Lee
- Department of Surgery, Queen Elizabeth Hospital, Jordan, Hong Kong
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17
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Sanjay DS, Lee KY, Syafiq H, Salleh MS. A 4-Year Audit of Open Method Chemoport Insertions through Cephalic Vein Performed In Hospital Tengku Ampuan Afzan. imjm 2019. [DOI: 10.31436/imjm.v18i1.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Introduction: Many cancer patients in general require long term venous access such as chemoport for chemotherapy, as well as infusion of fluids and blood taking. However, chemoport insertions carry complications such as infection, blockage, pneumothorax and malposition. We received feedbacks regarding complications endured by patients after chemoport insertion from the respective teams managing the patients in our hospital. In view of that, we conducted a retrospective audit on the chemoport insertions which we have done. Materials and Methods: We conducted a retrospective audit on the chemoport insertions which was planned for open method insertion through cephalic vein performed over the last 4 years from 2014 to 2017. Results: A total of 102 chemoports were inserted. Majority of patient’s ages are 50-59 years old. 88 (86%) of the cases were done via open method whereas another 14 cases were converted to percutaneous route. Majority of patients (55%) of the patients have breast carcinoma followed by colorectal (28%), haematological (12%) and gynaecological malignancies (5%). Complications occurred in 10 patients (rate at 9.8%). Most common complications were catheter related infection (5 cases) followed by wound infection (3 cases) and malposition (2 cases). Malposition was detected on post-operative chest radiograph and revision was done. All catheter related infection occurred in patients with haematological malignancies. Our complication rate of 9.8% is lower than the accepted complication rate of 15-25% worldwide. Conclusion: Chemoport provides a robust vascular access especially for the purpose of chemotherapy infusion. We showed with adequate training and privileging, it can be performed with very limited complications.
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18
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Kim Y, Park JW, Kim S, Lee KY, Bae J, Jeon YK, Im JM, Ryoo SB, Jeong SY, Park KJ. Inflammatory Myofibroblastic Tumor of the Retroperitoneum Including Chronic Granulomatous Inflammation Suggesting Tuberculosis: A Case Report. Ann Coloproctol 2019:285-288. [PMID: 30889946 PMCID: PMC6863005 DOI: 10.3393/ac.2018.05.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 05/09/2018] [Indexed: 11/06/2022] Open
Abstract
An inflammatory myofibroblastic tumor (IMT) is a solid tumor of unknown etiology frequently affecting children and young adults and commonly affecting the lung or orbital region. We present a case involving a 41-year-old man who had an IMT combined with Mycobacterium tuberculosis infection in the retroperitoneum. He presented with only pain in the right lower abdomen without accompanying symptoms; a retroperitoneal mass was found on computed tomography. The tumor had invaded the end of the ileum and was attached to the omentum, so mass excision could not be performed. The tumor was completely excised surgically and had histological features diagnostic of an IMT. Histologic findings of the omentum were positive for Ziehl-Nielsen staining for acid-fast bacilli and for a positive polymerase chain reaction for M. tuberculosis. The patient had no apparent immune disorder. These findings made this case exceptional because IMTs, which are mostly due to atypical mycobacteria, have been found mainly in immunocompromised patients.
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Affiliation(s)
- Younglim Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Ji Won Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sungwhan Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kil-Yong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jeongmo Bae
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Yoon Kyung Jeon
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Ji Min Im
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Seung-Bum Ryoo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seung-Yong Jeong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyu Joo Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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19
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Nguyen DH, Lee KY, Mohammadigheisar M, Kim IH. Evaluation of the blend of organic acids and medium-chain fatty acids in matrix coating as antibiotic growth promoter alternative on growth performance, nutrient digestibility, blood profiles, excreta microflora, and carcass quality in broilers. Poult Sci 2019; 97:4351-4358. [PMID: 30165535 DOI: 10.3382/ps/pey339] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 07/12/2018] [Indexed: 01/18/2023] Open
Abstract
This study was conducted to evaluate the effects of the blend of organic acids (OAs) and medium-chain fatty acids (MCFAs) in broiler chickens. A total of 816 1-d-old male Ross 308 broiler chickens (35 ± 0.44 g) were randomly allocated into 1 of the following 6 dietary treatments (17 broilers per pen with 8 pens per treatment): dietary treatments consisted of corn-soybean meal-based basal diet and the basal diet supplemented with 0.02, 0.03, 0.04, 0.05, and 0.06% blend of OAs and MCFAs. The study lasted 5 wk during which growth performance was determined. In the current study, the inclusion of 0.02, 0.03, 0.04, 0.05, and 0.06% blend of OAs and MCFAs in the basal diet linearly increased (P < 0.05) body weight gain and improved feed conversion ratio (P < 0.0001) on day 7 to 14, day 14 to 35, as well as overall. Increasing inclusion of the blend of OAs and MCFAs levels in the diets also linearly increased (P = 0.001) the digestibility of dry matter on day 35. Broilers fed with different levels of the blend of OAs and MCFAs showed a linear increment (P = 0.042) in Lactobacillus concentration and decrease (P = 0.002) in Escherichia coli concentration. With regard to relative organ weight, a trend of linear reduction (P = 0.052) in bursa of Fabricius weight of broilers fed the blend of OAs and MCFAs was observed. There was a significant linear improvement (P = 0.011) in the IgG concentration associated with the inclusion of the blend of OAs and MCFAs levels in the diets. In conclusion, the blend of OAs and MCFAs supplementation positively influenced growth performance, nutrient digestibility, and excreta microflora in broiler chickens.
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Affiliation(s)
- D H Nguyen
- Department of Animal Resource and Science, Dankook University, Cheonan-si, Chungnam 31116, South Korea
| | - K Y Lee
- Morningbio Co., Ltd, Cheonan, Chungnam 31116, South Korea
| | - M Mohammadigheisar
- Department of animal biosciences, university of Guelph, Guelph, ON, Canada
| | - I H Kim
- Department of Animal Resource and Science, Dankook University, Cheonan-si, Chungnam 31116, South Korea
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20
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Lee KY, Park JW, Song I, Lee KY, Cho S, Kwon YH, Kim MJ, Ryoo SB, Jeong SY, Park KJ. Prognostic significance of sealed-off perforation in colon cancer: a prospective cohort study. World J Surg Oncol 2018; 16:232. [PMID: 30514318 PMCID: PMC6280413 DOI: 10.1186/s12957-018-1530-3] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 11/20/2018] [Indexed: 05/12/2023] Open
Abstract
Background Perforated colon cancer is a rare complication, but has a high risk of recurrence. However, most studies have not distinguished sealed-off perforation from free perforation, and the prognosis is unclear. The aim of this study was to evaluate the oncologic outcome of colon cancer with sealed-off perforation. Methods Eighty-six consecutive patients who underwent resection for colon cancer with sealed-off or free perforation were included. We defined sealed-off perforation as a colon perforation with localized abscess identified on operative, computed tomography, or pathologic findings, with no evidence of free perforation, including fecal contamination and dirty fluid collection in the peritoneal cavity. Oncologic outcomes were compared between patients with colon cancer with sealed-off perforation and free perforation using a log-rank test and Cox regression analysis. Results The sealed-off perforation group included 62 patients, and 24 patients were in the free perforation group. TNM stage and lymphatic, venous, and perineural invasion were similar between the groups. The median follow-up period was 28.9 months (range 0–159). The sealed-off perforation group had better prognosis compared with the free perforation group in terms of progression-free survival (PFS) and overall survival (OS), although there were no statistically significant differences in PFS (5-year PFS 53.7% vs. 40.5%, p = 0.148; 5-year OS 53.6% vs. 22.9%, p = 0.001). However, in multivariable analysis using the Cox progression test, sealed-off perforation did not show a significant effect on cancer progression (p = 0.138) and OS (p = 0.727). Conclusions Colon cancer with sealed-off perforation showed no difference in prognosis compared with free perforation. Electronic supplementary material The online version of this article (10.1186/s12957-018-1530-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kil-Yong Lee
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Ji Won Park
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea. .,Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea.
| | - Inho Song
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Ki-Young Lee
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Sangsik Cho
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Yoon-Hye Kwon
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Min Jung Kim
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Seung-Bum Ryoo
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
| | - Seung-Yong Jeong
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Kyu Joo Park
- Department of Surgery, Seoul National University College of Medicine, 101, Daehak-ro, Jongno-gu, Seoul, South Korea
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21
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Choi Y, Hwang BH, Hwang BH, Lee WJ, Lee KY, Park HW, Kim BH, Lee KY, Byeon JH, Kim JJ, Park HW, Kim JJ, Kim CJ, Chang KY, Kim CJ, Chang KY. P2264A clinical risk score to predict the presence of obstructive coronary artery disease in asymptomatic patients with type 2 diabetes. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2264] [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)
- Y Choi
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - B H Hwang
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - B H Hwang
- St.Paul's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - W J Lee
- St.Paul's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - K Y Lee
- St.Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Incheon, Korea Republic of
| | - H W Park
- Daejeon St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Daejeon, Korea Republic of
| | - B H Kim
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - K Y Lee
- St.Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Incheon, Korea Republic of
| | - J H Byeon
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - J J Kim
- Yeouido St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - H W Park
- Daejeon St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Daejeon, Korea Republic of
| | - J J Kim
- Yeouido St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - C J Kim
- Uijeongbu St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Uijeongbu, Korea Republic of
| | - K Y Chang
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - C J Kim
- Uijeongbu St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Uijeongbu, Korea Republic of
| | - K Y Chang
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
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22
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Lei XJ, Lee KY, Kim IH. Performance, egg quality, nutrient digestibility, and excreta microbiota shedding in laying hens fed corn-soybean-meal-wheat-based diets supplemented with xylanase. Poult Sci 2018; 97:2071-2077. [PMID: 29509938 DOI: 10.3382/ps/pey041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 07/31/2017] [Accepted: 01/16/2018] [Indexed: 12/17/2023] Open
Abstract
The aim of this study was to evaluate the effects of dietary levels of xylanase on production performance, egg quality, nutrient digestibility, and excreta microbiota shedding of laying hens in a 12-week trial. Two-hundred-forty Hy-Line brown laying hens (44 wk old) were distributed according to a randomized block experimental design into one of 4 dietary treatments with 10 replicates of 6 birds each. The 4 dietary treatments were corn-soybean-meal-wheat-based diets supplemented with 0, 225, 450, or 900 U/kg xylanase. Daily feed intake, egg production, egg weight, egg mass, feed conversion ratio, and damaged egg rate showed no significant response to increasing xylanase supplementation during any phase (P > 0.05). No significant responses were observed for apparent total tract digestibility of dry matter, nitrogen, or gross energy (P > 0.05). A significant linear increase to increasing xylanase supplementation was seen for lactic acid bacteria numbers, although coliforms and Salmonella counts were not affected. Increasing the dietary xylanase resulted in a significant linear increase in eggshell thickness in wk 3, 6, 9, and 12 (P < 0.05). In addition, a significant linear increase occurred for Haugh unit and albumen height in wk 12 (P < 0.05). In summary, the inclusion of xylanase in corn-soybean-meal-wheat-based diets increased eggshell thickness, Haugh unit, albumen height, and excreta lactic acid bacteria count but had no effect on production performance or nutrient digestibility.
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Affiliation(s)
- X J Lei
- Department of Animal Resource and Science, Dankook University, Cheonan, Chungnam 330-714, South Korea
| | - K Y Lee
- Department of Animal Resource and Science, Dankook University, Cheonan, Chungnam 330-714, South Korea
| | - I H Kim
- Department of Animal Resource and Science, Dankook University, Cheonan, Chungnam 330-714, South Korea
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23
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Lee KY, Lee KI, Kim JH, Lho T. High resolution Thomson scattering system for steady-state linear plasma sources. Rev Sci Instrum 2018; 89:013508. [PMID: 29390720 DOI: 10.1063/1.5003723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The high resolution Thomson scattering system with 63 points along a 25 mm line measures the radial electron temperature (Te) and its density (ne) in an argon plasma. By using a DC arc source with lanthanum hexaboride (LaB6) electrode, plasmas with electron temperature of over 5 eV and densities of 1.5 × 1019 m-3 have been measured. The system uses a frequency doubled (532 nm) Nd:YAG laser with 0.25 J/pulse at 20 Hz. The scattered light is collected and sent to a triple-grating spectrometer via optical-fibers, where images are recorded by an intensified charge coupled device (ICCD) camera. Although excellent in stray-light reduction, a disadvantage comes with its relatively low optical transmission and in sampling a tiny scattering volume. Thus requires accumulating multitude of images. In order to improve photon statistics, pixel binning in the ICCD camera as well as enlarging the intermediate slit-width inside the triple-grating spectrometer has been exploited. In addition, the ICCD camera capture images at 40 Hz while the laser is at 20 Hz. This operation mode allows us to alternate between background and scattering shot images. By image subtraction, influences from the plasma background are effectively taken out. Maximum likelihood estimation that uses a parameter sweep finds best fitting parameters Te and ne with the incoherent scattering spectrum.
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Affiliation(s)
- K Y Lee
- Plasma Technology Research Center, National Fusion Research Institute, 814-2 Osikdo-dong, Gunsan, Jeollabuk-do 573-540, South Korea
| | - K I Lee
- Plasma Technology Research Center, National Fusion Research Institute, 814-2 Osikdo-dong, Gunsan, Jeollabuk-do 573-540, South Korea
| | - J H Kim
- Plasma Technology Research Center, National Fusion Research Institute, 814-2 Osikdo-dong, Gunsan, Jeollabuk-do 573-540, South Korea
| | - T Lho
- Plasma Technology Research Center, National Fusion Research Institute, 814-2 Osikdo-dong, Gunsan, Jeollabuk-do 573-540, South Korea
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Hong CK, Hwang SY, Lee KY, Kim YS, Ha YR, Park SO. Metronome vs. Popular Song: A Comparison of Long-Term Retention of Chest Compression Skills after Layperson Training for Cardiopulmonary Resuscitation. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791602300303] [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] [Indexed: 11/17/2022] Open
Abstract
Introduction Long-term retention of cardiopulmonary resuscitation (CPR) skill is challenging for layperson trainees. This study compared the long-term retention of chest compression skills after either metronome-guided (MG) or popular song-guided (PG) CPR training. Methods This was a prospective randomised simulation trial. Untrained laypersons were randomly allocated to MG (n=61) or PG (n=68) groups at CPR training sessions. After CPR training, each participant performed 5-cycle CPR using a manikin with a Skill-Reporter™ immediately and six months afterwards. Results Immediately after training, the mean compression rate (MCR) was slightly higher in the PG than the MG group (107.4 vs. 102.2/min; p<0.0001), but there was no significant difference in the proportions of participants with an appropriate chest compression rate (100-120/min) (PSACCR) between the MG and PG (53/61 (86.9%) vs. 65/68 (95.6%); p=0.114). Six months later, MCR was faster in the MG than the PG (124.8 vs. 110.0/min; p<0.0001), and PSACCR in the PG was higher than that in the MG (62/68 (91.2%) vs. 25/61 (41.0%); p<0.0001). In both tests, there were no significant differences in other chest compression parameters of between the two groups, except for a minimal difference in incomplete chest release. Conclusion CPR training using a popular song is more effective than metronome-guided training in helping laypersons to maintain recommended compression rates after 6 months. (Hong Kong j.emerg.med. 2016;23:145-152)
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Affiliation(s)
- CK Hong
- Bundang Jesaeng General Hospital, Department of Emergency Medicine, 20 Seohyeon-ro, 180 Beon-gil, Bundang-gu, Seongnam-si, Republic of Korea
| | - SY Hwang
- Sungkyunkwan University School of Medicine, Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, 158 Palyoungro, MasanHoiwon-si, Changwon-si, Gyeongsangnam-do, Republic of Korea
| | - KY Lee
- Kyungnam University, Department of Physical Education, 7 Kyungnamdaehak-ro, Masanhappo-gu, Changwon-si, Gyeongsangnam-do, Republic of Korea
| | - YS Kim
- Bundang Jesaeng General Hospital, Department of Emergency Medicine, 20 Seohyeon-ro, 180 Beon-gil, Bundang-gu, Seongnam-si, Republic of Korea
| | - YR Ha
- Bundang Jesaeng General Hospital, Department of Emergency Medicine, 20 Seohyeon-ro, 180 Beon-gil, Bundang-gu, Seongnam-si, Republic of Korea
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Kang SM, Rosales JL, Meier-Stephenson V, Kim S, Lee KY, Narendran A. Genome-wide loss-of-function genetic screening identifies opioid receptor μ1 as a key regulator of L-asparaginase resistance in pediatric acute lymphoblastic leukemia. Oncogene 2017. [PMID: 28650467 PMCID: PMC5658664 DOI: 10.1038/onc.2017.211] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
L-asparaginase is a critical chemotherapeutic agent for acute lymphoblastic leukemia (ALL). It hydrolyzes plasma asparagine into aspartate and NH3, causing asparagine deficit and inhibition of protein synthesis and eventually, leukemic cell death. However, patient relapse often occurs due to development of resistance. The molecular mechanism by which ALL cells acquire resistance to L-asparaginase is unknown. Therefore, we sought to identify genes that are involved in L-asparaginase resistance in primary leukemic cells. By unbiased genome-wide RNAi screening, we found that among 10 resistant ALL clones, six hits were for opioid receptor mu 1 (oprm1), two hits were for carbonic anhydrase 1 (ca1) and another two hits were for ubiquitin-conjugating enzyme E2C (ube2c). We also found that OPRM1 is expressed in all leukemic cells tested. Specific knockdown of OPRM1 confers L-asparaginase resistance, validating our genome-wide retroviral shRNA library screening data. Methadone, an agonist of OPRM1, enhances the sensitivity of parental leukemic cells, but not OPRM1-depleted cells, to L-asparaginase treatment, indicating that OPRM1 is required for the synergistic action of L-asparaginase and methadone, and that OPRM1 loss promotes leukemic cell survival likely through downregulation of the OPRM1-mediated apoptotic pathway. Consistent with this premise, patient leukemic cells with relatively high levels of OPRM1 are more sensitive to L-asparaginase treatment compared to OPRM1-depleted leukemic cells, further indicating that OPRM1 loss has a crucial role in L-asparaginase resistance in leukemic patients. Thus, our study demonstrates for the first time, a novel OPRM1-mediated mechanism for L-asparaginase resistance in ALL, and identifies OPRM1 as a functional biomarker for defining high-risk subpopulations and for the detection of evolving resistant clones. Oprm1 may also be utilized for effective treatment of L-asparaginase-resistant ALL.
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Affiliation(s)
- S M Kang
- Department of Cell Biology and Anatomy, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada.,Division of Pediatric Oncology, Alberta Children's Hospital and POETIC Laboratory for Preclinical and Drug Discovery Studies, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada
| | - J L Rosales
- Department of Biochemistry and Molecular Biology, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - V Meier-Stephenson
- Division of Pediatric Oncology, Alberta Children's Hospital and POETIC Laboratory for Preclinical and Drug Discovery Studies, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada
| | - S Kim
- Department of Biochemistry and Molecular Biology, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada
| | - K Y Lee
- Department of Cell Biology and Anatomy, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada
| | - A Narendran
- Division of Pediatric Oncology, Alberta Children's Hospital and POETIC Laboratory for Preclinical and Drug Discovery Studies, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, AB, Canada
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Sun IO, Yoon HJ, Cho AY, Kim Y, Lee JH, Lee HS, Lee KY. A Case of Peritoneal Dialysis-Associated Peritonitis Caused by Agromyces mediolanus. Perit Dial Int 2017; 37:346-347. [PMID: 28512166 DOI: 10.3747/pdi.2016.00274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- I O Sun
- Division of Nephrology, Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Korea
| | - H J Yoon
- Division of Nephrology, Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Korea
| | - A Y Cho
- Division of Nephrology, Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Korea
| | - Y Kim
- Department of Laboratory Medicine, Presbyterian Medical Center, Jeonju, Korea
| | - J H Lee
- Department of Laboratory medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - H S Lee
- Department of Laboratory medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - K Y Lee
- Division of Nephrology, Department of Internal Medicine, Presbyterian Medical Center, Jeonju, Korea
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Park KJ, Ryoo SB, Kim JS, Kim TI, Baik SH, Kim HJ, Lee KY, Kim M, Kim WH. Allogeneic adipose-derived stem cells for the treatment of perianal fistula in Crohn's disease: a pilot clinical trial. Colorectal Dis 2016; 18:468-76. [PMID: 26603576 DOI: 10.1111/codi.13223] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [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: 05/22/2015] [Accepted: 09/10/2015] [Indexed: 12/13/2022]
Abstract
AIM Many perianal fistulae in Crohn's disease do not respond to conventional surgical and medical management and recurrence rates are high. The study evaluated the safety and feasibility of allogeneic adipose-derived stem cells for the treatment of perianal fistula in Crohn's disease. METHOD A multicentre, open-label, dose escalation pilot study was performed. The first three patients (group 1) were administered 1 × 10(7) cells/ml based on the size of the fistula tract. Four weeks later, after which time this dose had been confirmed to be safe, the next three patients (group 2) were administered 3 × 10(7) cells/ml. The end-point was complete closure at 8 weeks after the injection. Patients who attended for the 8 week assessment were followed for an additional 6 months. RESULTS There were no adverse events of Grade 3 or 4 severity and no adverse events related to the treatment with allogeneic adipose-derived stem cells. Two patients in group 1 achieved complete closure of the fistula at month 4 and month 6, and one patient in group 2 achieved complete closure at 8 weeks. The closure was sustained up to month 8 in all three of those patients. CONCLUSION These data suggest that allogeneic adipose-derived stem cells may be a feasible treatment option for perianal fistula in Crohn's disease.
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Affiliation(s)
- K J Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - S-B Ryoo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - J S Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - T I Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - S H Baik
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - H J Kim
- Department of Internal Medicine, Kyung Hee University College of Medicine, Seoul, Korea
| | - K Y Lee
- Department of Surgery, Kyung Hee University College of Medicine, Seoul, Korea
| | - M Kim
- Anterogen Co. Ltd, Seoul, Korea
| | - W H Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Park JS, Kim NK, Kim SH, Lee KY, Lee KY, Shin JY, Kim CN, Choi GS. Multicentre study of robotic intersphincteric resection for low rectal cancer. Br J Surg 2015; 102:1567-73. [PMID: 26312601 DOI: 10.1002/bjs.9914] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 06/22/2015] [Accepted: 07/08/2015] [Indexed: 12/16/2022]
Abstract
BACKGROUND There is a lack of information regarding the oncological safety of robotic intersphincteric resection (ISR) with coloanal anastomosis. The objective of this study was to compare the long-term feasibility of robotic compared with laparoscopic ISR. METHODS Between January 2008 and May 2011, consecutive patients who underwent robotic or laparoscopic ISR with coloanal anastomosis from seven institutions were included. Propensity score analyses were performed to compare outcomes for groups in a 1 : 1 case-matched cohort. The primary endpoint was 3-year disease-free survival. RESULTS A total of 334 patients underwent ISR with coloanal anastomosis, of whom 212 matched patients (106 in each group) formed the cohort for analysis. The overall rate of conversion to open surgery was 0.9 per cent in the robotic ISR group and 1.9 per cent in the laparoscopic ISR group. Nine patients (8.5 per cent) in the laparoscopic group and three (2.8 per cent) in the robotic ISR group still had a stoma at last follow-up (P = 0.075). Total mean hospital costs were significantly higher for robotic ISR (€ 12,757 versus € 9223 for laparoscopic ISR; P = 0.037). Overall 3-year local recurrence rates were similar in the two groups (6.7 per cent for robotic and 5.7 per cent for laparoscopic resection; P = 0.935). The combined 3-year disease-free survival rates were 89.6 (95 per cent c.i. 84.1 to 95.9) and 90.5 (85.4 to 96.6) per cent respectively (P = 0.298). CONCLUSION Robotic ISR with coloanal anastomosis for rectal cancer has reasonable oncological outcomes, but is currently too expensive with no short-term advantages.
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Affiliation(s)
- J S Park
- Departments of Surgery, Kyungpook National University Medical Centre, Kyungpook National University School of Medicine, Daegu, Korea
| | - N K Kim
- Yonsei University College of Medicine, Seoul, Korea
| | - S H Kim
- Korea University Anam Hospital, Seoul, Korea
| | - K Y Lee
- Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - K Y Lee
- Kyung Hee University, Seoul, Korea
| | - J Y Shin
- Inje University Paik-Hospital, Pusan, Korea
| | - C N Kim
- Eulji University Hospital, Daejeon, Korea
| | - G-S Choi
- Departments of Surgery, Kyungpook National University Medical Centre, Kyungpook National University School of Medicine, Daegu, Korea
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Lee YH, Kim YS, Lee HC, Lee SW, Kang YN, Kang JH, Hong SH, Kim YK, Kim SJ, Ahn MI, Han DH, Yoo IR, Park JG, Sung SW, Lee KY. Tumour volume changes assessed with high-quality KVCT in lung cancer patients undergoing concurrent chemoradiotherapy. Br J Radiol 2015; 88:20150156. [PMID: 26055505 DOI: 10.1259/bjr.20150156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE We evaluated tumour volume changes in patients with lung cancer undergoing concurrent chemoradiotherapy using image-guided radiotherapy (RT). METHODS The kilovoltage image was obtained using CT on rail at every five fractions. The gross tumour volumes (GTVs), including the primary tumour and lymph nodes (LNs), were contoured to analyse the time and degree of tumour regression. RESULTS 46 patients [32, non-small-cell lung cancer (NSCLC), and 14, small-cell lung cancer (SCLC)] were included in this study. In total, 281 CT scans and 82 sites of GTVs were evaluated. Significant volume changes occurred in both the NSCLC and SCLC groups (p < 0.001 and 0.002), and the average GTV change compared with baseline was 49.85 ± 3.65 [standard error (SE)]% and 65.95 ± 4.60 (SE)% for the NSCLC and SCLC groups, respectively. A significant difference in the degree of volume reduction between the primary tumour and LNs was observed in only the NSCLC group (p < 0.0001) but not in the SCLC group (p = 0.735). The greatest volume regression compared with the volume before the five fractions occurred between the 15 and 20 fractions in the NSCLC group and between the 5 and 10 fractions in the SCLC group. CONCLUSION Both primary tumour and LNs were well defined using CT on rail. Significant volume changes occurred during RT, and there was a difference in volume reduction between the NSCLC and SCLC groups, regarding the degree and timing of the tumour reduction in the primary tumour and LNs. ADVANCES IN KNOWLEDGE NSCLC and SCLC groups showed differences in the degree and timing of volume reduction. The primary tumour and LNs in NSCLC regressed differently.
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Affiliation(s)
- Y H Lee
- 1 Department of Radiation Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y S Kim
- 1 Department of Radiation Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H C Lee
- 1 Department of Radiation Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S W Lee
- 1 Department of Radiation Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y N Kang
- 1 Department of Radiation Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J H Kang
- 2 Department of Medical Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S H Hong
- 2 Department of Medical Oncology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y K Kim
- 3 Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S J Kim
- 3 Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - M I Ahn
- 4 Department of Radiology, Seoul St Mary's Hospital, Seoul, College of Medicine, The Catholic University of Korea, Republic of Korea
| | - D H Han
- 4 Department of Radiology, Seoul St Mary's Hospital, Seoul, College of Medicine, The Catholic University of Korea, Republic of Korea
| | - I R Yoo
- 5 Department of Nuclear Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J G Park
- 6 Department of Thoracic Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S W Sung
- 6 Department of Thoracic Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - K Y Lee
- 7 Department of Pathology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Abstract
In summary, there are various factors which play an important prognostic role in the final visual acuity of patients with active histoplasma maculopathy. The factors over which we have no control is the location of the neovascular membrane in this maculopathy. The factors over which we do have control are how and when to treat it. We feel that laser photocoagulation is an effective method of treatment. It has been possible to obliterate the NVM as close as 200 micrometers from the foveola, thus preventing the development of subfoveal NVMs which have such a poor visual prognosis. The most important factor is the early treatment with laser photocoagulation. If we could treat all patients within 4 weeks of initial visual symptoms (group A), we might be able to eliminate a large number of patients (group C) who have a much poorer visual prognosis. Serial postoperative fluorescein studies are necessary to detect recurrent neovascular membranes which require further treatment.
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Coelho RR, Tsigka A, Lee KY, Grattan CEH. A case of subcutaneous dirofilariasis presenting in the UK: an unexpected finding. Clin Exp Dermatol 2014; 40:449-51. [PMID: 25477048 DOI: 10.1111/ced.12518] [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] [Accepted: 07/18/2014] [Indexed: 12/01/2022]
Affiliation(s)
- R R Coelho
- Department of Dermatology, Norfolk and Norwich University Hospital, Norwich, Norfolk, UK.
| | - A Tsigka
- Department of Pathology, Norfolk and Norwich University Hospital, Norwich, Norfolk, UK
| | - K Y Lee
- Department of Dermatology, Norfolk and Norwich University Hospital, Norwich, Norfolk, UK
| | - C E H Grattan
- Department of Dermatology, Norfolk and Norwich University Hospital, Norwich, Norfolk, UK
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Upadhaya SD, Lee KY, Kim IH. Protected organic Acid blends as an alternative to antibiotics in finishing pigs. Asian-Australas J Anim Sci 2014; 27:1600-7. [PMID: 25358320 PMCID: PMC4213705 DOI: 10.5713/ajas.2014.14356] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 06/11/2014] [Accepted: 08/14/2014] [Indexed: 11/27/2022]
Abstract
A total of 120 finishing pigs ([Yorkshire×Landrace]×Duroc) with an average body weight (BW) of 49.72 ±1.72 kg were used in 12-wk trial to evaluate the effects of protected organic acids on growth performance, nutrient digestibility, fecal micro flora, meat quality and fecal gas emission. Pigs were randomly allotted to one of three dietary treatments (10 replication pens with 4 pigs per pen) in a randomly complete block design based on their initial BW. Each dietary treatment consisted of: Control (CON/basal diet), OA1 (basal diet+0.1% organic acids) and OA2 (basal diet+0.2% organic acids). Dietary treatment with protected organic acid blends linearly improved (p<0.001) average daily gain during 0 to 6 week, 6 to 12 week as well as overall with the increase in their inclusion level in the diet. The dry matter, N, and energy digestibility was higher (linear effect, p<0.001) with the increase in the dose of protected organic acid blends during 12 week. During week 6, a decrease (linear effect, p = 0.01) in fecal ammonia contents was observed with the increase in the level of protected organic acid blends on d 3 and d 5 of fermentation. Moreover, acetic acid emission decreased linearly (p = 0.02) on d7 of fermentation with the increase in the level of protected organic acid blends. During 12 weeks, linear decrease (p<0.001) in fecal ammonia on d 3 and d 5 and acetic acid content on d 5 of fermentation was observed with the increase in the level of protected organic acid blends. Supplementation of protected organic acid blends linearly increased the longissimus muscle area with the increasing concentration of organic acids. Moreover, color of meat increased (linear effect, quadratic effect, p<0.001, p<0.002 respectively) and firmness of meat showed quadratic effect (p = 0.003) with the inclusion of increasing level of protected organic acid in the diet. During the 6 week, increment in the level of protected organic acid blends decreased (linear effect, p = 0.01) Escherichia coli (E. coli) counts and increased (linear effect, p = 0.004) Lactobacillus counts. During 12-wk of experimental trial, feces from pigs fed diet supplemented with organic acid blends showed linear reduction (p<0.001) of E. coli counts and the tendency of linear increase (p = 0.06) in Lactobacillus count with the increase in the level of organic acid blends. In conclusion, 0.2% protected organic acids blends positively affected growth performance, nutrient digestibility, fecal gas emission and meat quality in finishing pigs without any adverse effects on blood parameters.
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Affiliation(s)
| | - K Y Lee
- Morningbio Co., LTD., Cheonan 331-963, Korea
| | - I H Kim
- Morningbio Co., LTD., Cheonan 331-963, Korea
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Kim DH, Kim KH, Nam IS, Lee SS, Choi CW, Kim WY, Kwon EG, Lee KY, Lee MJ, Oh YK. Effect of indigenous herbs on growth, blood metabolites and carcass characteristics in the late fattening period of hanwoo steers. Asian-Australas J Anim Sci 2014; 26:1562-8. [PMID: 25049742 PMCID: PMC4093822 DOI: 10.5713/ajas.2013.13132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 06/27/2013] [Accepted: 05/29/2013] [Indexed: 11/27/2022]
Abstract
This study was conducted to evaluate the effects of indigenous herbal supplements on growth, blood metabolites and carcass characteristics in the late fattening period of Hanwoo steers. In a 6 month feeding trial, thirty Hanwoo steers (647±32 kg) were allotted to one of 5 treatment groups, control (basal diet contained lasalocid), licorice, clove, turmeric and silymarin, with six steers per pen. All groups received ad libitum concentrate and 1 kg rice straw/animal/d throughout the feeding trial. Blood samples were collected at the beginning, middle, and the end of the experiment and the steers were slaughtered at the end. Blood glucose, triglyceride, total protein, and albumin concentrations were higher in the turmeric treatment compared with other treatments. Blood urea nitrogen and creatinine concentrations were highest (p<0.003 and p = 0.071, respectively) in steers treated with silymarin. Alanine aminotransferase activity was lower (p<0.06) for licorice and silymarin compared with the control group. There were no alterations in serum aspartate aminotransferase and gamma glutamyltransferase activities as a consequence of herb treatments (p = 0.203 and 0.135, respectively). Final body weight, body weight gain, average dairy gain and dry matter intake were not significantly different among treatments. Yield grade, marbling score and quality grade were higher for silymarin group than those of the control group (p<0.05). Therefore, the results suggest that silymarin can be used an effective dietary supplement as an alternative to antibiotic feed additive and a productivity enhancer, providing safe and more consumer acceptable alternative to synthetic compounds during the late fattening period of steers.
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Affiliation(s)
- D H Kim
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - K H Kim
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - I S Nam
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - S S Lee
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - C W Choi
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - W Y Kim
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - E G Kwon
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - K Y Lee
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - M J Lee
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
| | - Y K Oh
- National Institute of Animal Science, RDA, Suwon, 441-706, Korea
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Doo KW, Kang EY, Yong HS, Woo OH, Lee KY, Oh YW. Accuracy of lung nodule volumetry in low-dose CT with iterative reconstruction: an anthropomorphic thoracic phantom study. Br J Radiol 2014; 87:20130644. [PMID: 25026866 DOI: 10.1259/bjr.20130644] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The purpose of this study was to assess accuracy of lung nodule volumetry in low-dose CT with application of iterative reconstruction (IR) according to nodule size, nodule density and CT tube currents, using artificial lung nodules within an anthropomorphic thoracic phantom. METHODS Eight artificial nodules (four diameters: 5, 8, 10 and 12 mm; two CT densities: -630 HU that represents ground-glass nodule and +100 HU that represents solid nodule) were randomly placed inside a thoracic phantom. Scans were performed with tube current-time product to 10, 20, 30 and 50 mAs. Images were reconstructed with IR and filtered back projection (FBP). We compared volume estimates to a reference standard and calculated the absolute percentage error (APE). RESULTS The APE of all nodules was significantly lower when IR was used than with FBP (7.5 ± 4.7% compared with 9.0 ±6.9%; p < 0.001). The effect of IR was more pronounced for smaller nodules (p < 0.001). IR showed a significantly lower APE than FBP in ground-glass nodules (p < 0.0001), and the difference was more pronounced at the lowest tube current (11.8 ± 5.9% compared with 21.3 ± 6.1%; p < 0.0001). The effect of IR was most pronounced for ground-glass nodules in the lowest CT tube current. CONCLUSION Lung nodule volumetry in low-dose CT by application of IR showed reliable accuracy in a phantom study. Lung nodule volumetry can be reliably applicable to all lung nodules including small, ground-glass nodules even in ultra-low-dose CT with application of IR. ADVANCES IN KNOWLEDGE IR significantly improved the accuracy of lung nodule volumetry compared with FBP particularly for ground-glass (-630 HU) nodules. Volumetry in low-dose CT can be utilized in patient with lung nodule work-up, and IR has benefit for small, ground-glass lung nodules in low-dose CT.
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Affiliation(s)
- K W Doo
- 1 Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
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Lee KY, Kim KW, Baek YJ, Chung DY, Lee EH, Lee SY, Moon JK. Biosorption of uranium(VI) from aqueous solution by biomass of brown algae Laminaria japonica. Water Sci Technol 2014; 70:136-43. [PMID: 25026591 DOI: 10.2166/wst.2014.205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The uranium(VI) adsorption efficiency of non-living biomass of brown algae was evaluated in various adsorption experimental conditions. Several different sizes of biomass were prepared using pretreatment and surface-modification steps. The kinetics of uranium uptake were mainly dependent on the particle size of the prepared Laminaria japonica biosorbent. The optimal particle size, contact time, and injection amount for the stable operation of the wastewater treatment process were determined. Spectroscopic analyses showed that uranium was adsorbed in the porous inside structure of the biosorbent. The ionic diffusivity in the biomass was the dominant rate-limiting factor; therefore, the adsorption rate was significantly increased with decrease of particle size. From the results of comparative experiments using the biosorbents and other chemical adsorbents/precipitants, such as activated carbons, zeolites, and limes, it was demonstrated that the brown algae biosorbent could replace the conventional chemicals for uranium removal. As a post-treatment for the final solid waste reduction, the ignition treatment could significantly reduce the weight of waste biosorbents. In conclusion, the brown algae biosorbent is shown to be a favorable adsorbent for uranium(VI) removal from radioactive wastewater.
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Affiliation(s)
- K Y Lee
- Korea Atomic Energy Research Institute (KAERI), 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea E-mail:
| | - K W Kim
- Korea Atomic Energy Research Institute (KAERI), 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea E-mail:
| | - Y J Baek
- Korea Atomic Energy Research Institute (KAERI), 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea E-mail:
| | - D Y Chung
- Korea Atomic Energy Research Institute (KAERI), 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea E-mail:
| | - E H Lee
- Korea Atomic Energy Research Institute (KAERI), 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea E-mail:
| | - S Y Lee
- Department of Mechanical Engineering, Sogang University, 1 Shinsu-dong, Mapo-gu, Seoul, 121-742, Republic of Korea
| | - J K Moon
- Korea Atomic Energy Research Institute (KAERI), 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea E-mail:
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Kim SH, Jang SH, Kim J, Lee KY, Jang YS. A microneutralization assay for dengue viruses using mosquito C6/36 cells. Acta Virol 2013; 57:379-381. [PMID: 24020767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Merino JG, Latour LL, Tso A, Lee KY, Kang DW, Davis LA, Lazar RM, Horvath KA, Corso PJ, Warach S. Blood-brain barrier disruption after cardiac surgery. AJNR Am J Neuroradiol 2012; 34:518-23. [PMID: 22918429 DOI: 10.3174/ajnr.a3251] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE CNS complications are often seen after heart surgery, and postsurgical disruption of the BBB may play an etiologic role. The objective of this study was to determine the prevalence of MR imaging-detected BBB disruption (HARM) and DWI lesions after cardiac surgery. MATERIALS AND METHODS All patients had an MRI after cardiac surgery. For half the patients (group 1), we administered gadolinium 24 hours after surgery and obtained high-resolution DWI and FLAIR images 24-48 hours later. We administered gadolinium to the other half (group 2) at the time of the postoperative scan, 2-4 days after surgery. Two stroke neurologists evaluated the images. RESULTS Of the 19 patients we studied, none had clinical evidence of a stroke or delirium at the time of the gadolinium administration or the scan, but 9 patients (47%) had HARM (67% in group 1; 30% in group 2; P = .18) and 14 patients (74%) had DWI lesions (70% in group 1; 78% in group 2; P = 1.0). Not all patients with DWI lesions had HARM, and not all patients with HARM had DWI lesions (P = .56). CONCLUSIONS Almost half the patients undergoing cardiac surgery have evidence of HARM, and three-quarters have acute lesions on DWI after surgery. BBB disruption is more prevalent in the first 24 hours after surgery. These findings suggest that MR imaging can be used as an imaging biomarker to assess therapies that may protect the BBB in patients undergoing heart surgery.
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Affiliation(s)
- J G Merino
- Section on Stroke Diagnostics and Therapeutics, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland, USA.
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Cho SY, Song KS, Lee KY, Yoon YY, Kim WB, Ko KS. A study of activity ratios of uranium isotope in the groundwater using liquid scintillation counter. Analytical Science and Technology 2012. [DOI: 10.5806/ast.2012.25.2.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee KY, Jeon SY, Hong JW, Choi KW, Lee CY, Choi SJ, Kim JH, Song KH, Kim KH. Endothelin-1 enhances the proliferation of normal human melanocytes in a paradoxical manner from the TNF-α-inhibited condition, but tacrolimus promotes exclusively the cellular migration without proliferation: a proposed action mechanism for combination therapy of phototherapy and topical tacrolimus in vitiligo treatment. J Eur Acad Dermatol Venereol 2012; 27:609-16. [PMID: 22404745 DOI: 10.1111/j.1468-3083.2012.04498.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Vitiligo is an acquired pigmentary disorder caused by the destruction of melanocytes. Two of the major theories regarding the pathogenesis of vitiligo are the autoimmune theory and autocytotoxicity theory, but, the precise pathogenetic mechanism is still not clarified. OBJECTIVES We investigated the effects of ET-1, tacrolimus and tumour necrosis factor-α (TNF-α) on proliferation and migration of cultured normal human melanocytes (NHMs). We also sought to clarify the theoretical rationale underlying the topical tacrolimus monotherapy or tacrolimus-UV combination therapy as tools for vitiligo treatment. METHODS The effects of ET-1, tacrolimus and TNF-α on proliferation/migration of cultured NHMs were investigated by MTT assay/Boyden chamber transwell migration assay. We also examined roles of CXC-chemokine receptor II (CXCR II) and matrix metalloproteinases (MMPs) in such conditions. RESULTS ET-1 exerted a stimulatory effect on melanocyte proliferation and migration, but, tacrolimus exerted a stimulatory effect only on melanocyte migration higher than ET-1. TNF-α inhibited melanocyte proliferation in a dose-dependent manner. Paradoxically, TNF-α-pretreated NHMs exhibited an enhanced proliferative efficiency after being switched to ET-1. We found CXCRII was highly expressed in TNF-α-incubated melanocytes than the agents-free control, and ET-1 treatment after TNF-α preincubation showed the higher levels of CXCRII expression than the condition incubated with TNF-α alone. Moreover, the greater activities of MMP-2 and MMP-9 induced by tacrolimus than ET-1, reflected tacrolimus would enhance migration stimulatory effect in cultured NHMs. CONCLUSIONS Topical tacrolimus can be used an effective agent for vitiligo treatment as monotherapy, maybe due to its migration stimulatory action or TNF-α inhibitory property, and also as a component in combination therapy with UV treatment, considering the more upregulated MMPs activities are induced and the more effective migrations are feasible by itself than ET-1.
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Affiliation(s)
- K Y Lee
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Yoon YY, Koh DC, Lee KY, Cho SY, Ko KS. Investigation on the petroleum contamination by using Rn-222 tracer. Analytical Science and Technology 2012. [DOI: 10.5806/ast.2012.25.1.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lee KY, Charbonnet M, Gold MS. Upregulation of high-affinity GABA(A) receptors in cultured rat dorsal root ganglion neurons. Neuroscience 2012; 208:133-42. [PMID: 22366297 DOI: 10.1016/j.neuroscience.2012.01.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 01/27/2012] [Accepted: 01/31/2012] [Indexed: 10/14/2022]
Abstract
Despite evidence that high-affinity GABA(A) receptor subunit mRNA and protein are present in dorsal root ganglia (DRG), low-affinity currents dominate those detected in acutely dissociated DRG neurons in vitro. This observation raises the possibility that high-affinity receptors are normally trafficked out of the DRG toward central and peripheral terminals. We therefore hypothesized that with time in culture, there would be an increase in high-affinity GABA(A) currents in DRG neurons. To test this hypothesis, we studied dissociated DRG neurons 2 h (acute) and 24 h (cultured) after plating with whole-cell patch-clamp techniques, Western blot, and semiquantitative reverse transcriptase polymerase chain reaction (sqRT-PCR) analysis. GABA(A) current density increases dramatically with time in culture in association with the emergence of two persistent currents with EC50's of 0.25±0.01 μM and 3.2±0.02 μM for GABA activation. In a subpopulation of neurons, there was also an increase in the potency of GABA activation of the transient current from an EC50 of 78.16±10.1 μM to 9.56±1.3 μM with time in culture. A fraction of the high-affinity current was potentiated by δ-subunit agonist 4,5,6,7-tetrahydroisoxazolo[5,4-c]pyridine-3-ol (THIP). δ-subunit immunoreactivity was largely restricted to the cytosolic fraction in acute, but the membrane fraction in cultured, DRG neurons, with no detectable change in δ-subunit mRNA. However, the emergence of a high-affinity current blocked by THIP and insensitive to bicuculline was detected in a subpopulation of cultured neurons as well in association with an increase in ρ2- and ρ3-subunit mRNA in cultured DRG neurons. Our results suggest that high-affinity δ-subunit-containing GABA(A) receptors are normally trafficked out of the DRG where they are targeted to peripheral and central processes. They also highlight that the interpretation of data obtained from cultured DRG neurons should be made with caution.
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Affiliation(s)
- K Y Lee
- Department of Anesthesiology, University of Pittsburgh, Pittsburgh, PA, USA
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Hur H, Kim NK, Kim HG, Min BS, Lee KY, Shin SJ, Cheon JH, Choi SH. Adenosine triphosphate-based chemotherapy response assay-guided chemotherapy in unresectable colorectal liver metastasis. Br J Cancer 2011; 106:53-60. [PMID: 22068817 PMCID: PMC3251844 DOI: 10.1038/bjc.2011.469] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND This study aims to evaluate the effectiveness of adenosine triphosphate-based chemotherapy response assay (ATP-CRA)-guided neoadjuvant chemotherapy for increasing resectability in patients with unresectable colorectal liver metastasis. PATIENTS AND METHODS Patients were randomised into two groups: Group A was treated by conventional chemotherapy regimen and Group B was treated by chemotherapy regimen according to the ATP-CRA. Three chemotherapeutic agents (5-fluorouracil, oxaliplatin and irinotecan) were tested by ATP-CRA and more sensitive agents were selected. Either FOLFOX or FOLFIRI was administered. Between Group A and B, treatment response and resectability were compared. RESULTS Between November 2008 and October 2010, a total 63 patients were randomised to Group A (N=32) or Group B (N=31). FOLFOX was more preferred in Group A than in Group B (26 out of 32 (81.3%) vs 20 out of 31 (64.5%)). Group B showed better treatment response than Group A (48.4% vs 21.9%, P=0.027). The resectability of hepatic lesion was higher in Group B (35.5% vs 12.5%, P=0.032). Mean duration from chemotherapy onset to the time of liver resection was 11 cycles (range 4-12) in Group A and 8 cycles (range 8-16) in Group B. CONCLUSION This study showed that tailored-chemotherapy based on ATP-CRA could improve the treatment response and resectability in initially unresectable colorectal liver metastasis.
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Affiliation(s)
- H Hur
- Department of Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
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Batmunkh T, Kim YJ, Lee KY, Cayetano MG, Jung JS, Kim SY, Kim KC, Lee SJ, Kim JS, Chang LS, An JY. Time-resolved measurements of PM2.5 carbonaceous aerosols at Gosan, Korea. J Air Waste Manag Assoc 2011; 61:1174-1182. [PMID: 22168101 DOI: 10.1080/10473289.2011.609761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In order to better understand the characteristics of atmospheric carbonaceous aerosol at a background site in Northeast Asia, semicontinuous organic carbon (OC) and elemental carbon (EC), and time-resolved water-soluble organic carbon (WSOC) were measured by a Sunset OC/ EC and a PILS-TOC (particle-into-liquid sampler coupled with an online total organic carbon) analyzer, respectively, at the Gosan supersite on Jeju Island, Korea, in the summer (May 28-June 17) and fall (August 24-September 30) of 2009. Hourly average OC concentration varied in the range of approximately 0.87-28.38 microgC m-3, with a mean of 4.07+/- 2.60 microgC m-3, while the hourly average EC concentration ranged approximately from 0.04 to 8.19 .microgC m-3, with a mean of 1.35 +/- 0.71 microgC m-3, from May 28 to June 17, 2009. During the fall season, OC varied in the approximate range 0.9-9.6 microgC m-3, with a mean of 2.30 +/-0.80 microgC m-3, whereas EC ranged approximately from 0.01 to 5.40 microgC m-3, with a mean of 0.66 +/- 0.38 microgC m-3. Average contributions of EC to TC and WSOC to OC were 26.0% +/- 9.7% and 20.6% +/-7.4%, and 37.6% +/- 23.5% and 57.2% +/- 22.2% during summer and fall seasons, respectively. As expected, clear diurnal variation of WSOC/OC was found in summer, varying from 0.22 during the nighttime up to 0.72 during the daytime, mainly due to the photo-oxidation process. In order to investigate the effect of air mass pathway on the characteristics of carbonaceous aerosol, 5-day back-trajectory analysis was conducted using the HYSPLIT model. The air mass pathways were classified into four types: Continental (CC), Marine (M), East Sea (ES) and Korean Peninsula (KP). The highest OC/EC ratio of 3.63 was observed when air mass originated from the Continental area (CC). The lowest OC/EC ratio of 0.79 was measured when air mass originated from the Marine area (M). A high OC concentration was occasionally observed at Gosan due to local biomass burning activities. The contribution of secondary OC to total OC varied approximately between 8.4% and 32.2% and depended on air mass type.
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Affiliation(s)
- T Batmunkh
- Advanced Environmental Monitoring Research Center (ADEMRC), School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Korea
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Abstract
BACKGROUND The aim of this study was to identify the benefits of robotic transanal specimen extraction (RTSE) compared with minilaparotomy specimen extraction (MSE). METHODS Patients who underwent totally robotic surgery with curative intent for treatment of adenocarcinoma of the rectum below 12 cm from the anal verge were selected from the authors' database. Patients were divided into RTSE and MSE groups according to the method of specimen delivery. Clinicopathological features and perioperative surgical outcomes were compared between the two groups. RESULTS There were 53 patients in the RTSE group and 66 in the MSE group. No differences were observed in overall complications. Postoperative recovery was faster in the RTSE group in terms of resumption of a soft diet (mean(s.d.) 3·5(1·5) versus 4·6(1·7) days; P < 0·001) and length of hospital stay (9·0(4·8) versus 11·3(5·3) days; P = 0·016). Pain scores on a visual analogue scale were significantly lower in the RTSE group than in the MSE group from day 2 to day 5 after surgery (P = 0·021 to P < 0·001). CONCLUSION RTSE in robotic rectal cancer surgery was associated with less pain and a faster recovery than MSE.
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Affiliation(s)
- J Kang
- Department of Surgery, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Korea
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Chen YM, Cai JH, Huang YS, Lee KY, Tsai DS. Preparation and characterization of iridium dioxide-carbon nanotube nanocomposites for supercapacitors. Nanotechnology 2011; 22:115706. [PMID: 21301078 DOI: 10.1088/0957-4484/22/11/115706] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A thin film of novel hierarchical structure, suitable for supercapacitor applications, has been developed through combining conductive multi-wall carbon nanotubes (MWCNTs) and square IrO(2) nanotubes (IrO(2)NT) of nanometer size. Synthesis of this hierarchical structure with open porosity is performed by depositing IrO(2) short tubes densely along the long wires of carbon nanotube on a substrate of stainless steel. A IrO(2) tube of rutile structure grows in the [001] direction, with an opening at its top, surrounded by very thin walls. The IrO(2) addition on the MWCNT template increases the capacitance of the CNT thin film effectively, because of pseudocapacitance of the IrO(2) surface. For this particular composite, featured with two tubular nanostructures, the specific capacitance increases from 15 F g(-1) (MWCNT) to 69 F g(-1) (IrO(2)NT/MWCNT), measured using the galvanostatic discharge experiment. Its property of fast retrieval of the stored charge is assured in the impedance measurement, showing that the internal resistance of the IrO(2)NT/MWCNT nanocomposite electrode is lower than that of the bare MWCNTs.
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Affiliation(s)
- Y M Chen
- Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
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Abstract
A uterus-like mass is a rare, benign extra-uterine tumour composed of smooth muscle and endometrium. The majority of uterus-like masses occur in the ovary. Rarely, uterus-like masses occur in the broad ligament, small bowel, small bowel mesentery or uterine cervix. Here, we report a case of a uterus-like mass in the sigmoid mesocolon. A well-defined, markedly enhanced soft-tissue mass with central cystic change and haemorrhage was observed on CT. The current report describes the CT characteristics of this sigmoid mesocolon uterus-like mass together with the differential diagnoses.
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Affiliation(s)
- S Y Shin
- Department of Radiology, Kyung Hee University Medical Center, Dongdaemun-gu, Seoul, Korea
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Park JY, Kwon YC, Lee KH, Kim HN, Lee KY, Kim DM. Screening of optimal ribosome binding sites (RBSs) for high-level protein expression in a cell-free protein synthesis system derived from Streptomyces venezuelae. J Biotechnol 2010. [DOI: 10.1016/j.jbiotec.2010.09.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lee KY, Kwon YC, Lee KH, Byun JY, Kim HN, Kim DM. A cell-free protein synthesis system derived from the extract of Streptomyces venezuelae. J Biotechnol 2010. [DOI: 10.1016/j.jbiotec.2010.09.852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Huang HW, Lee KY, Huang JK, Lin CH, Lin CF, Yu CC, Kuo HC. Light extraction efficiency enhancement of GaN-based light emitting diodes on n-GaN layer using a SiO2 photonic quasi-crystal overgrowth. J Nanosci Nanotechnol 2010; 10:6363-6368. [PMID: 21137731 DOI: 10.1166/jnn.2010.2639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this paper, GaN-based LEDs with a SiO2 photonic quasi-crystal (PQC) pattern on an n-GaN layer by nano-imprint lithography (NIL) are fabricated and investigated. At a driving current of 20 mA on Transistor Outline (TO)-can package, the better light output power of LED III (d = 1.2 microm) was enhanced by a factor of 1.20. After 1000 h life test (55 degrees C/50 mA) condition, Normalized output power of LED with a SiO2 PQC pattern (LED III (d = 1.2 microm)) on an n-GaN layer only decreased by 5%. This results offer promising potential to enhance the light output power of commercial light-emitting devices using the technique of nano-imprint lithography.
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Affiliation(s)
- H W Huang
- Institute of Electro-Optical Engineering, National Chiao-Tung University, Hsinchu 30050, Taiwan, ROC
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Park JM, Choi MG, Kim SW, Chung IS, Yang CW, Kim YS, Jung CK, Lee KY, Kang JH. Increased incidence of colorectal malignancies in renal transplant recipients: a case control study. Am J Transplant 2010; 10:2043-50. [PMID: 20883538 DOI: 10.1111/j.1600-6143.2010.03231.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This study was to evaluate the frequency of colorectal neoplasia in renal transplant recipients and to investigate the association with Epstein-Barr virus (EBV) and cytomegalovirus (CMV) infection. We compared the frequency of colorectal neoplasia among renal transplant recipients with that of the healthy subjects. Specimens of colorectal neoplasia were examined for EBV and CMV using in situ hybridization and immunohistochemistry, respectively. Of 796 renal transplantation cohorts, 315 were enrolled. The frequency of colorectal neoplasia among the patients was 22.9%. Compared with the healthy subjects, the odds ratio (OR) for advanced adenoma was 3.32 (95% CI, 1.81-6.10). The frequency of cancer among the patients was 1.9% (OR, 12.0; 95% CI, 1.45-99.7). A long interval between transplantation and colonoscopy was a significant factor in the development of advanced colorectal neoplasia. EBV positivity was detected in 30.6% of colorectal neoplasia specimens from renal transplant recipients, which was higher than that for the controls (p = 0.002). CMV was not detected in any lesions of patients or controls. In conclusion, renal transplant recipients have a significantly increased risk of advanced colorectal neoplasia. EBV was more frequently found in specimens of advanced colorectal neoplasm obtained from the renal transplant recipients.
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Affiliation(s)
- J M Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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