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Kim J, Jung E, Yang W, Kim CK, Durnaoglu S, Oh IR, Kim CW, Sinskey AJ, Mihm MC, Lee JH. A Novel Multi-Component Formulation Reduces Inflammation In Vitro and Clinically Lessens the Symptoms of Chronic Eczematous Skin. Int J Mol Sci 2023; 24:12979. [PMID: 37629159 PMCID: PMC10454735 DOI: 10.3390/ijms241612979] [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: 07/11/2023] [Revised: 08/13/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Long-term treatments for inflammatory skin diseases like atopic dermatitis or eczema can cause adverse effects. Super Protein Multifunction (SPM) was investigated as a potential treatment for managing skin inflammation by monitoring the expression of pro-inflammatory cytokines induced using LPS and poly(I:C)/TNFα in HaCaT keratinocytes and Hs27 fibroblasts as measured via RT-PCR. SPM solution was also assessed for its effect on cytokine release, measured using ELISA, in a UVB-irradiated 3D human skin model. To evaluate the efficiency of SPM, 20 patients with mild eczematous skin were randomized to receive SPM or vehicle twice a day for three weeks in a double-blind controlled trial. In vitro studies showed SPM inhibited inflammation-induced IL-1β, IL-6, IL-33, IL-1α, TSLP, and TNFα expression or release. In the clinical study, the SPM group showed significant improvements in the IGA, PA, and DLQI scores compared to the vehicle group. Neither group showed significant differences in VAS (pruritus). Histological analysis showed reduced stratum corneum thickness and inflammatory cell infiltration. The results suggest that SPM may reduce inflammation in individuals with chronic eczematous skin.
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Affiliation(s)
- Jihee Kim
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea;
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul 03722, Republic of Korea
| | - Eunjoong Jung
- Biocoz Global Korea, R & D Center, Seoul 03181, Republic of Korea; (E.J.); (W.Y.); (C.-K.K.); (S.D.); (I.-R.O.); (C.-W.K.)
| | - Wonmi Yang
- Biocoz Global Korea, R & D Center, Seoul 03181, Republic of Korea; (E.J.); (W.Y.); (C.-K.K.); (S.D.); (I.-R.O.); (C.-W.K.)
| | - Chun-Kang Kim
- Biocoz Global Korea, R & D Center, Seoul 03181, Republic of Korea; (E.J.); (W.Y.); (C.-K.K.); (S.D.); (I.-R.O.); (C.-W.K.)
| | - Serpen Durnaoglu
- Biocoz Global Korea, R & D Center, Seoul 03181, Republic of Korea; (E.J.); (W.Y.); (C.-K.K.); (S.D.); (I.-R.O.); (C.-W.K.)
| | - In-Rok Oh
- Biocoz Global Korea, R & D Center, Seoul 03181, Republic of Korea; (E.J.); (W.Y.); (C.-K.K.); (S.D.); (I.-R.O.); (C.-W.K.)
| | - Chan-Wha Kim
- Biocoz Global Korea, R & D Center, Seoul 03181, Republic of Korea; (E.J.); (W.Y.); (C.-K.K.); (S.D.); (I.-R.O.); (C.-W.K.)
| | - Anthony J. Sinskey
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Martin C. Mihm
- Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA;
| | - Ju Hee Lee
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea;
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul 03722, Republic of Korea
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2
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Chun EJ, Kim JK, Yang SY, Kim SS, Kim CW. Development of a nucleic acid-based lateral flow assay to diagnose ordinary scabies. J Eur Acad Dermatol Venereol 2021; 36:e282-e285. [PMID: 34758167 DOI: 10.1111/jdv.17810] [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: 07/02/2021] [Revised: 09/17/2021] [Accepted: 10/27/2021] [Indexed: 11/26/2022]
Affiliation(s)
- E J Chun
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - J K Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Yang
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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3
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Chun EJ, Kim JK, Yang SY, Kim SS, Kim CW. Changes in the incidence of contagious infectious skin diseases after the COVID-19 outbreak. J Eur Acad Dermatol Venereol 2021; 36:e3-e4. [PMID: 34487408 PMCID: PMC8657312 DOI: 10.1111/jdv.17640] [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] [Received: 05/23/2021] [Accepted: 09/02/2021] [Indexed: 11/26/2022]
Affiliation(s)
- E J Chun
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - J K Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Yang
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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4
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Kim JH, Jung K, Kim J, Lee J, Kim H, Song H, Han K, Park S, Ahn C, Kim CW. Development of a rabbit monocyte activation test as an alternative to the rabbit pyrogen test and its application in the analysis of plasma-derived products. Biologicals 2021; 71:20-30. [PMID: 33994086 DOI: 10.1016/j.biologicals.2021.04.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 04/11/2021] [Accepted: 04/14/2021] [Indexed: 10/21/2022] Open
Abstract
The rabbit pyrogen test (RPT) is a safety test conducted as a part of mandatory requirements of regulatory agencies. RPT is currently performed for routine quality control (QC) by manufacturers and for national lot release of biological products, such as plasma-derived products. However, RPT involves the use of many rabbits, counter to the international efforts to minimize the use of animals in research. Furthermore, pyrogen amount cannot be discerned from the test results and the results may be considerably affected by various factors. Therefore, a need exists for substituting RPT with in vitro assays. As a viable alternative to RPT, we here established a rabbit monocyte activation test (RMAT) based on the human MAT in the European Pharmacopoeia. RMAT uses rabbit peripheral blood mononuclear cells as the source of monocytes instead of live animals. The test detected endotoxin, lipoteichoic acid, peptidoglycan, and zymosan with high sensitivity, showing high correlation with the in vivo RPT results. The results of RMAT and RPT testing of non-pyrogenic plasma-derived products were also consistent. Furthermore, RMAT showed satisfactory recovery rates in an interference test with product samples and spiked-in pyrogens. We conclude that RMAT could replace the existing RPT for routine QC.
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Affiliation(s)
- Ji-Hye Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 1, 5-ka, Anam-dong, Sungbuk-ku, Seoul, 02841, Republic of Korea; National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Kikyung Jung
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Jaeok Kim
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Jiyoung Lee
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - HyunJeong Kim
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Hojin Song
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Kiwon Han
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Sangmi Park
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea; Department of Manufacturing Pharmacy, Chungbuk National University College of Pharmacy, 194-21, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 28160, Republic of Korea.
| | - Chiyoung Ahn
- National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chuncheongbuk-do, 28159, Republic of Korea.
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 1, 5-ka, Anam-dong, Sungbuk-ku, Seoul, 02841, Republic of Korea.
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5
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Carver M, Celentano A, Hicks K, Marsicano L, Mathieu V, Pilloni A, Adhikari KP, Adhikari S, Amaryan MJ, Angelini G, Atac H, Baltzell NA, Barion L, Battaglieri M, Bedlinskiy I, Benmokhtar F, Bianconi A, Biselli AS, Bondi M, Bossù F, Boiarinov S, Briscoe WJ, Brooks WK, Bulumulla D, Burkert VD, Carman DS, Carvajal JC, Chatagnon P, Chetry T, Ciullo G, Clark L, Clary BA, Cole PL, Contalbrigo M, Crede V, D'Angelo A, Dashyan N, De Vita R, Defurne M, Deur A, Diehl S, Djalali C, Dugger M, Dupre R, Egiyan H, Ehrhart M, Alaoui AE, Fassi LE, Eugenio P, Fedotov G, Fegan S, Filippi A, Gavalian G, Gevorgyan N, Gilfoyle GP, Girod FX, Gothe RW, Griffioen KA, Hafidi K, Hakobyan H, Hattawy M, Hayward TB, Heddle D, Holtrop M, Huang Q, Hyde CE, Ilieva Y, Ireland DG, Isupov EL, Jenkins D, Jo HS, Joo K, Joosten S, Keller D, Khanal A, Khandaker M, Kim A, Kim CW, Klein FJ, Kripko A, Kubarovsky V, Lanza L, Leali M, Lenisa P, Livingston K, MacGregor IJD, Marchand D, Mascagna V, McCracken ME, McKinnon B, Meziani ZE, Mokeev V, Movsisyan A, Munevar E, Camacho CM, Nadel-Turonski P, Neupane K, Niccolai S, Niculescu G, Osipenko M, Ostrovidov AI, Paolone M, Pappalardo LL, Paremuzyan R, Pasyuk E, Phelps W, Pogorelko O, Prok Y, Protopopescu D, Ripani M, Ritchie BG, Ritman J, Rizzo A, Rosner G, Rowley J, Sabatié F, Salgado C, Schmidt A, Schumacher RA, Sharabian YG, Shrestha U, Sokhan D, Soto O, Sparveris N, Stepanyan S, Strakovsky II, Strauch S, Tyler N, Tyson R, Ungaro M, Venturelli L, Voskanyan H, Voutier E, Watts DP, Wei K, Wei X, Yale B, Zachariou N, Zhang J, Zhao ZW. Photoproduction of the f_{2}(1270) Meson Using the CLAS Detector. Phys Rev Lett 2021; 126:082002. [PMID: 33709753 DOI: 10.1103/physrevlett.126.082002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/08/2021] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
The quark structure of the f_{2}(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq[over ¯]) resonance with quantum numbers J^{PC}=2^{++}. Recently, it was proposed that the f_{2}(1270) is a molecular state made from the attractive interaction of two ρ mesons. Such a state would be expected to decay strongly to final states with charged pions due to the dominant decay ρ→π^{+}π^{-}, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction γp→π^{0}π^{0}p, using the CEBAF Large Acceptance Spectrometer detector at Jefferson Lab for incident beam energies between 3.6 and 5.4 GeV. Differential cross sections, dσ/dt, for f_{2}(1270) photoproduction are extracted with good precision due to low backgrounds and are compared to theoretical calculations.
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Affiliation(s)
- M Carver
- Ohio University, Athens, Ohio 45701, USA
| | - A Celentano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - K Hicks
- Ohio University, Athens, Ohio 45701, USA
| | - L Marsicano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - V Mathieu
- Departamento de Fsica Terica and IPARCOS, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - A Pilloni
- INFN, Sezione di Genova, 16146 Genova, Italy
- European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*) and Fondazione Bruno Kessler, Strada delle Tavarnelle 286, Villazzano (Trento) I-38123, Italy
- INFN, Sezione di Roma, 00185 Roma, Italy
| | - K P Adhikari
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - S Adhikari
- Florida International University, Miami, Florida 33199, USA
| | - M J Amaryan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - G Angelini
- The George Washington University, Washington, D.C. 20052, USA
| | - H Atac
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - N A Baltzell
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - L Barion
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - M Battaglieri
- INFN, Sezione di Genova, 16146 Genova, Italy
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - I Bedlinskiy
- National Research Centre Kurchatov Institute-ITEP, Moscow, 117259, Russia
| | - F Benmokhtar
- Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, USA
| | - A Bianconi
- Università degli Studi di Brescia, 25123 Brescia, Italy
- INFN, Sezione di Pavia, 27100 Pavia, Italy
| | - A S Biselli
- Fairfield University, Fairfield, Connecticut 06824, USA
| | - M Bondi
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - F Bossù
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Boiarinov
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W J Briscoe
- The George Washington University, Washington, D.C. 20052, USA
| | - W K Brooks
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - D Bulumulla
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - V D Burkert
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D S Carman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J C Carvajal
- Florida International University, Miami, Florida 33199, USA
| | - P Chatagnon
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - T Chetry
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - G Ciullo
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
- Universita' di Ferrara, 44121 Ferrara, Italy
| | - L Clark
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - B A Clary
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - P L Cole
- Lamar University, 4400 MLK Boulevard, PO Box 10046, Beaumont, Texas 77710, USA
- Idaho State University, Pocatello, Idaho 83209, USA
| | | | - V Crede
- Florida State University, Tallahassee, Florida 32306 USA
| | - A D'Angelo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome, Italy
| | - N Dashyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - R De Vita
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - M Defurne
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S Diehl
- University of Connecticut, Storrs, Connecticut 06269, USA
- II Physikalisches Institut der Universitaet Giessen 35392, Germany
| | - C Djalali
- Ohio University, Athens, Ohio 45701, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - M Dugger
- Arizona State University, Tempe, Arizona 85287-1504, USA
| | - R Dupre
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - H Egiyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
| | - M Ehrhart
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A El Alaoui
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - L El Fassi
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - P Eugenio
- Florida State University, Tallahassee, Florida 32306 USA
| | - G Fedotov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - S Fegan
- University of York, York YO10 5DD, United Kingdom
| | - A Filippi
- INFN, Sezione di Torino, 10125 Torino, Italy
| | - G Gavalian
- Old Dominion University, Norfolk, Virginia 23529, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - N Gevorgyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - G P Gilfoyle
- University of Richmond, Richmond, Virginia 23173, USA
| | - F X Girod
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - R W Gothe
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - K A Griffioen
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - K Hafidi
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - H Hakobyan
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - M Hattawy
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - T B Hayward
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - D Heddle
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Christopher Newport University, Newport News, Virginia 23606, USA
| | - M Holtrop
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
| | - Q Huang
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - C E Hyde
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - Y Ilieva
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - D G Ireland
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - E L Isupov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - D Jenkins
- Virginia Tech, Blacksburg, Virginia 24061-0435, USA
| | - H S Jo
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - K Joo
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - S Joosten
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Keller
- Ohio University, Athens, Ohio 45701, USA
- University of Virginia, Charlottesville, Virginia 22901j, USA
| | - A Khanal
- Florida International University, Miami, Florida 33199, USA
| | - M Khandaker
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - A Kim
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - C W Kim
- The George Washington University, Washington, D.C. 20052, USA
| | - F J Klein
- Catholic University of America, Washington, D.C. 20064, USA
| | - A Kripko
- II Physikalisches Institut der Universitaet Giessen 35392, Germany
| | - V Kubarovsky
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L Lanza
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
| | - M Leali
- Università degli Studi di Brescia, 25123 Brescia, Italy
- INFN, Sezione di Pavia, 27100 Pavia, Italy
| | - P Lenisa
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
- Universita' di Ferrara, 44121 Ferrara, Italy
| | - K Livingston
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | - D Marchand
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - V Mascagna
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi dell'Insubria, 22100 Como, Italy
| | - M E McCracken
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - B McKinnon
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Z E Meziani
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - V Mokeev
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - A Movsisyan
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - E Munevar
- The George Washington University, Washington, D.C. 20052, USA
| | - C Munoz Camacho
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - P Nadel-Turonski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Catholic University of America, Washington, D.C. 20064, USA
| | - K Neupane
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - S Niccolai
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - G Niculescu
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - M Osipenko
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - A I Ostrovidov
- Florida State University, Tallahassee, Florida 32306 USA
| | - M Paolone
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - L L Pappalardo
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
- Universita' di Ferrara, 44121 Ferrara, Italy
| | - R Paremuzyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - E Pasyuk
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W Phelps
- Christopher Newport University, Newport News, Virginia 23606, USA
| | - O Pogorelko
- National Research Centre Kurchatov Institute-ITEP, Moscow, 117259, Russia
| | - Y Prok
- Old Dominion University, Norfolk, Virginia 23529, USA
- University of Virginia, Charlottesville, Virginia 22901j, USA
| | | | - M Ripani
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - B G Ritchie
- Arizona State University, Tempe, Arizona 85287-1504, USA
| | - J Ritman
- Institute fur Kernphysik (Juelich), Juelich, Germany
| | - A Rizzo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome, Italy
| | - G Rosner
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - J Rowley
- Ohio University, Athens, Ohio 45701, USA
| | - F Sabatié
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - C Salgado
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - A Schmidt
- The George Washington University, Washington, D.C. 20052, USA
| | - R A Schumacher
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Y G Sharabian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - U Shrestha
- Ohio University, Athens, Ohio 45701, USA
| | - D Sokhan
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - O Soto
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - N Sparveris
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Stepanyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - I I Strakovsky
- The George Washington University, Washington, D.C. 20052, USA
| | - S Strauch
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - N Tyler
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - R Tyson
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - M Ungaro
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - L Venturelli
- Università degli Studi di Brescia, 25123 Brescia, Italy
- INFN, Sezione di Pavia, 27100 Pavia, Italy
| | - H Voskanyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - E Voutier
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - D P Watts
- University of York, York YO10 5DD, United Kingdom
| | - K Wei
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - X Wei
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Yale
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - N Zachariou
- University of York, York YO10 5DD, United Kingdom
| | - J Zhang
- Old Dominion University, Norfolk, Virginia 23529, USA
- University of Virginia, Charlottesville, Virginia 22901j, USA
| | - Z W Zhao
- University of South Carolina, Columbia, South Carolina 29208, USA
- Duke University, Durham, North Carolina 27708-0305, USA
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6
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Mirazita M, Avakian H, Courtoy A, Pisano S, Adhikari S, Amaryan MJ, Angelini G, Atac H, Baltzell NA, Barion L, Battaglieri M, Bedlinskiy I, Benmokhtar F, Bianconi A, Biselli AS, Bossù F, Boiarinov S, Briscoe WJ, Brooks WK, Bulumulla D, Burkert VD, Carman DS, Carvajal JC, Celentano A, Chatagnon P, Chetry T, Ciullo G, Clary B, Cole PL, Contalbrigo M, Crede V, D'Angelo A, Dashyan N, De Vita R, Defurne M, Deur A, Diehl S, Dilks C, Djalali C, Dupre R, Egiyan H, Ehrhart M, Alaoui AE, Fassi LE, Eugenio P, Fegan S, Fersch R, Filippi A, Forest TA, Ghandilyan Y, Gavalian G, Gilfoyle GP, Giovanetti KL, Girod FX, Glazier DI, Golovatch E, Gothe RW, Griffioen KA, Guidal M, Guo L, Hafidi K, Hakobyan H, Hattawy M, Hayward TB, Heddle D, Hicks K, Hobart A, Holtrop M, Huang Q, Ilieva Y, Ireland DG, Ishkhanov BS, Isupov EL, Jenkins D, Jo HS, Joo K, Keller D, Khanal A, Khandaker M, Kim CW, Kim W, Klein FJ, Kubarovsky V, Kuhn SE, Lanza L, Leali M, Lenisa P, Livingston K, MacGregor IJD, Marchand D, Markov N, Marsicano L, Mascagna V, McKinnon B, Milner RG, Mineeva T, Mokeev V, Mullen C, Camacho CM, Neupane K, Niculescu G, O'Connell T, Osipenko M, Paolone M, Pappalardo LL, Paremuzyan R, Park K, Pasyuk E, Phelps W, Pocanic D, Pogorelko O, Poudel J, Prok Y, Raue BA, Ripani M, Ritman J, Rizzo A, Rossi P, Sabatié F, Salgado C, Schmidt A, Schumacher RA, Sharabian YG, Shrestha U, Soto O, Sparveris N, Stepanyan S, Strakovsky II, Strauch S, Tyler N, Ungaro M, Venturelli L, Voskanyan H, Vossen A, Voutier E, Watts D, Wei K, Wei X, Wood MH, Yale B, Zachariou N, Zhang J, Zhao ZW. Beam Spin Asymmetry in Semi-Inclusive Electroproduction of Hadron Pairs. Phys Rev Lett 2021; 126:062002. [PMID: 33635681 DOI: 10.1103/physrevlett.126.062002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/23/2020] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
A first measurement of the longitudinal beam spin asymmetry A_{LU} in the semi-inclusive electroproduction of pairs of charged pions is reported. A_{LU} is a higher-twist observable and offers the cleanest access to the nucleon twist-3 parton distribution function e(x). Data have been collected in the Hall-B at Jefferson Lab by impinging a 5.498-GeV electron beam on a liquid-hydrogen target, and reconstructing the scattered electron and the pion pair with the CLAS detector. One-dimensional projections of the A_{LU}^{sinϕ_{R}} moments are extracted for the kinematic variables of interest in the valence quark region. The understanding of dihadron production is essential for the interpretation of observables in single-hadron production in semi-inclusive DIS, and pioneering measurements of single-spin asymmetries in dihadron production open a new avenue in studies of QCD dynamics.
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Affiliation(s)
- M Mirazita
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - H Avakian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Courtoy
- Instituto de Física, Universidad Nacional Autónoma de México Apartado Postal 20-364, Ciudad de México 01000, Mexico
| | - S Pisano
- Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, 00184 Rome, Italy
| | - S Adhikari
- Florida International University, Miami, Florida 33199, USA
| | - M J Amaryan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | | | - H Atac
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - N A Baltzell
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L Barion
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - M Battaglieri
- INFN, Sezione di Genova, 16146 Genova, Italy
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - I Bedlinskiy
- National Research Centre Kurchatov Institute-ITEP, Moscow 117259, Russia
| | - Fatiha Benmokhtar
- Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, USA
| | - A Bianconi
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi di Brescia, 25123 Brescia, Italy
| | - A S Biselli
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
- Fairfield University, Fairfield Connecticut 06824, USA
| | - F Bossù
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Boiarinov
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W J Briscoe
- The George Washington University, Washington, D.C. 20052, USA
| | - W K Brooks
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - D Bulumulla
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - V D Burkert
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D S Carman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J C Carvajal
- Florida International University, Miami, Florida 33199, USA
| | - A Celentano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - P Chatagnon
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - T Chetry
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - G Ciullo
- Universita' di Ferrara, 44121 Ferrara, Italy
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - B Clary
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - P L Cole
- Lamar University, 4400 MLK Blvd, PO Box 10009, Beaumont, Texas 77710, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | | | - V Crede
- Florida State University, Tallahassee, Florida 32306, USA
| | - A D'Angelo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome Italy
| | - N Dashyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - R De Vita
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - M Defurne
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S Diehl
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - C Dilks
- Duke University, Durham, North Carolina 27708-0305, USA
| | - C Djalali
- Ohio University, Athens, Ohio 45701, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - R Dupre
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - H Egiyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Ehrhart
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A El Alaoui
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - L El Fassi
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - P Eugenio
- Florida State University, Tallahassee, Florida 32306, USA
| | - S Fegan
- University of York, York YO10 5DD, United Kingdom
| | - R Fersch
- Christopher Newport University, Newport News, Virginia 23606, USA
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - A Filippi
- INFN, Sezione di Torino, 10125 Torino, Italy
| | - T A Forest
- Idaho State University, Pocatello, Idaho 83209, USA
| | - Y Ghandilyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - G Gavalian
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - G P Gilfoyle
- University of Richmond, Richmond, Virginia 23173, USA
| | - K L Giovanetti
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - F X Girod
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D I Glazier
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - E Golovatch
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - R W Gothe
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - K A Griffioen
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - M Guidal
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - L Guo
- Florida International University, Miami, Florida 33199, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - K Hafidi
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - H Hakobyan
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - M Hattawy
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - T B Hayward
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - D Heddle
- Christopher Newport University, Newport News, Virginia 23606, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - K Hicks
- Ohio University, Athens, Ohio 45701, USA
| | - A Hobart
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - M Holtrop
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
| | - Q Huang
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Ilieva
- The George Washington University, Washington, D.C. 20052, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - D G Ireland
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - B S Ishkhanov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - E L Isupov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - D Jenkins
- Virginia Tech, Blacksburg, Virginia 24061-0435, USA
| | - H S Jo
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - K Joo
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - D Keller
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - A Khanal
- Florida International University, Miami, Florida 33199, USA
| | - M Khandaker
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - C W Kim
- The George Washington University, Washington, D.C. 20052, USA
| | - W Kim
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - F J Klein
- Catholic University of America, Washington, D.C. 20064, USA
| | - V Kubarovsky
- Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S E Kuhn
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - L Lanza
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
| | - M Leali
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi di Brescia, 25123 Brescia, Italy
| | - P Lenisa
- Universita' di Ferrara, 44121 Ferrara, Italy
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - K Livingston
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | - D Marchand
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - N Markov
- University of Connecticut, Storrs, Connecticut 06269, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L Marsicano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - V Mascagna
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi dell'Insubria, 22100 Como, Italy
| | - B McKinnon
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - R G Milner
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
| | - T Mineeva
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - V Mokeev
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Mullen
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - C Munoz Camacho
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - K Neupane
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - G Niculescu
- James Madison University, Harrisonburg, Virginia 22807, USA
- Ohio University, Athens, Ohio 45701, USA
| | - T O'Connell
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - M Osipenko
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - M Paolone
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - L L Pappalardo
- Universita' di Ferrara, 44121 Ferrara, Italy
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - R Paremuzyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - K Park
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - E Pasyuk
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W Phelps
- Christopher Newport University, Newport News, Virginia 23606, USA
| | - D Pocanic
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - O Pogorelko
- National Research Centre Kurchatov Institute-ITEP, Moscow 117259, Russia
| | - J Poudel
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - Y Prok
- Old Dominion University, Norfolk, Virginia 23529, USA
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - B A Raue
- Florida International University, Miami, Florida 33199, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Ripani
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - J Ritman
- Institute fur Kernphysik (Juelich), Juelich 52428, Germany
| | - A Rizzo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome Italy
| | - P Rossi
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - F Sabatié
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - C Salgado
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - A Schmidt
- The George Washington University, Washington, D.C. 20052, USA
| | - R A Schumacher
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Y G Sharabian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - U Shrestha
- Ohio University, Athens, Ohio 45701, USA
| | - O Soto
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - N Sparveris
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Stepanyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - I I Strakovsky
- The George Washington University, Washington, D.C. 20052, USA
| | - S Strauch
- The George Washington University, Washington, D.C. 20052, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - N Tyler
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - M Ungaro
- Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L Venturelli
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi di Brescia, 25123 Brescia, Italy
| | - H Voskanyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - A Vossen
- Duke University, Durham, North Carolina 27708-0305, USA
| | - E Voutier
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - D Watts
- University of York, York YO10 5DD, United Kingdom
| | - K Wei
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - X Wei
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M H Wood
- Canisius College, Buffalo, New York 14208, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - B Yale
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - N Zachariou
- University of York, York YO10 5DD, United Kingdom
| | - J Zhang
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - Z W Zhao
- Duke University, Durham, North Carolina 27708-0305, USA
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7
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Shin CH, Cho HS, Won HJ, Kwon HJ, Kim CW, Yoon YJ. Enhanced production of clavulanic acid by improving glycerol utilization using reporter-guided mutagenesis of an industrial Streptomyces clavuligerus strain. J Ind Microbiol Biotechnol 2021; 48:6119913. [PMID: 33693777 PMCID: PMC9113135 DOI: 10.1093/jimb/kuab004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/22/2021] [Indexed: 11/13/2022]
Abstract
Abstract
Clavulanic acid (CA) produced by Streptomyces clavuligerus is a clinically important β-lactamase inhibitor. It is known that glycerol utilization can significantly improve cell growth and CA production of S. clavuligerus. We found that the industrial CA-producing S. clavuligerus strain OR generated by random mutagenesis consumes less glycerol than the wild-type strain; we then developed a mutant strain in which the glycerol utilization operon is overexpressed, as compared to the parent OR strain, through iterative random mutagenesis and reporter-guided selection. The CA production of the resulting S. clavuligerus ORUN strain was increased by approximately 31.3% (5.21 ± 0.26 g/l) in a flask culture and 17.4% (6.11 ± 0.36 g/l) in a fermenter culture, as compared to that of the starting OR strain. These results confirmed the important role of glycerol utilization in CA production and demonstrated that reporter-guided mutant selection is an efficient method for further improvement of randomly mutagenized industrial strains.
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Affiliation(s)
- Chang-Hun Shin
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Hang Su Cho
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyung-Jin Won
- Fermentation Technology Team, Research Institute of CKD Bio, Ansan 15604, Republic of Korea
| | - Ho Jeong Kwon
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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8
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Diehl S, Joo K, Kim A, Avakian H, Kroll P, Park K, Riser D, Semenov-Tian-Shansky K, Tezgin K, Adhikari KP, Adhikari S, Amaryan MJ, Angelini G, Asryan G, Atac H, Barion L, Battaglieri M, Bedlinskiy I, Benmokhtar F, Bianconi A, Biselli AS, Bossù F, Boiarinov S, Briscoe WJ, Brooks WK, Bulumulla D, Burkert VD, Carman DS, Carvajal JC, Celentano A, Chatagnon P, Chetry T, Ciullo G, Clark L, Cole PL, Contalbrigo M, Crede V, D'Angelo A, Dashyan N, De Vita R, Defurne M, Deur A, Dilks C, Djalali C, Dupre R, Egiyan H, Ehrhart M, El Alaoui A, El Fassi L, Eugenio P, Filippi A, Forest TA, Ghandilyan Y, Gilfoyle GP, Giovanetti KL, Girod FX, Glazier DI, Golovatch E, Gothe RW, Griffioen KA, Guidal M, Guo L, Hakobyan H, Harrison N, Hattawy M, Hayward TB, Heddle D, Hicks K, Holtrop M, Ilieva Y, Ireland DG, Ishkhanov BS, Isupov EL, Jenkins D, Jo HS, Joosten S, Keller D, Khachatryan M, Khanal A, Khandaker M, Kim CW, Kim W, Kubarovsky V, Kuhn SE, Lanza L, Leali M, Lenisa P, Livingston K, MacGregor IJD, Marchand D, Markov N, Marsicano L, Mascagna V, McKinnon B, Meziani ZE, Mineeva T, Mirazita M, Mokeev V, Munoz Camacho C, Nadel-Turonski P, Niculescu G, Osipenko M, Paolone M, Pappalardo LL, Pasyuk E, Phelps W, Pogorelko O, Price JW, Prok Y, Raue BA, Ripani M, Rizzo A, Rossi P, Rowley J, Sabatié F, Salgado C, Schmidt A, Schumacher RA, Sharabian YG, Shrestha U, Soto O, Sparveris N, Stepanyan S, Stoler P, Strakovsky II, Strauch S, Tan JA, Tyler N, Ungaro M, Venturelli L, Voskanyan H, Voutier E, Watts DP, Wei X, Wood MH, Zachariou N, Zhang J, Zhao ZW. Extraction of Beam-Spin Asymmetries from the Hard Exclusive π^{+} Channel off Protons in a Wide Range of Kinematics. Phys Rev Lett 2020; 125:182001. [PMID: 33196236 DOI: 10.1103/physrevlett.125.182001] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/08/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
We have measured beam-spin asymmetries to extract the sinϕ moment A_{LU}^{sinϕ} from the hard exclusive e[over →]p→e^{'}nπ^{+} reaction above the resonance region, for the first time with nearly full coverage from forward to backward angles in the center of mass. The A_{LU}^{sinϕ} moment has been measured up to 6.6 GeV^{2} in -t, covering the kinematic regimes of generalized parton distributions (GPD) and baryon-to-meson transition distribution amplitudes (TDA) at the same time. The experimental results in very forward kinematics demonstrate the sensitivity to chiral-odd and chiral-even GPDs. In very backward kinematics where the TDA framework is applicable, we found A_{LU}^{sinϕ} to be negative, while a sign change was observed near 90° in the center of mass. The unique results presented in this Letter will provide critical constraints to establish reaction mechanisms that can help to further develop the GPD and TDA frameworks.
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Affiliation(s)
- S Diehl
- University of Connecticut, Storrs, Connecticut 06269, USA
- Justus Liebig University Giessen, 35392 Giessen, Germany
| | - K Joo
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - A Kim
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - H Avakian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Kroll
- Fachbereich Physik, Universitat Wuppertal, D-42097 Wuppertal, Germany
| | - K Park
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - D Riser
- University of Connecticut, Storrs, Connecticut 06269, USA
| | | | - K Tezgin
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - K P Adhikari
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - S Adhikari
- Florida International University, Miami, Florida 33199, USA
| | - M J Amaryan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - G Angelini
- The George Washington University, Washington, District of Columbia 20052, USA
| | - G Asryan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - H Atac
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - L Barion
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - M Battaglieri
- INFN, Sezione di Genova, 16146 Genova, Italy
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - I Bedlinskiy
- National Research Centre Kurchatov Institute-ITEP, Moscow, 117259, Russia
| | - F Benmokhtar
- Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, USA
| | - A Bianconi
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi di Brescia, 25123 Brescia, Italy
| | - A S Biselli
- Fairfield University, Fairfield, Connecticut 06824, USA
| | - F Bossù
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Boiarinov
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W J Briscoe
- The George Washington University, Washington, District of Columbia 20052, USA
| | - W K Brooks
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - D Bulumulla
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - V D Burkert
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D S Carman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J C Carvajal
- Florida International University, Miami, Florida 33199, USA
| | - A Celentano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - P Chatagnon
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - T Chetry
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - G Ciullo
- Universita' di Ferrara , 44121 Ferrara, Italy
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - L Clark
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - P L Cole
- Lamar University, Beaumont, Texas 77705, USA
| | | | - V Crede
- Florida State University, Tallahassee, Florida 32306, USA
| | - A D'Angelo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome Italy
| | - N Dashyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - R De Vita
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - M Defurne
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Dilks
- Duke University, Durham, North Carolina 27708-0305, USA
| | - C Djalali
- Ohio University, Athens, Ohio 45701, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - R Dupre
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - H Egiyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Ehrhart
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A El Alaoui
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - L El Fassi
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - P Eugenio
- Florida State University, Tallahassee, Florida 32306, USA
| | - A Filippi
- INFN, Sezione di Torino, 10125 Torino, Italy
| | - T A Forest
- Idaho State University, Pocatello, Idaho 83209
| | - Y Ghandilyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - G P Gilfoyle
- University of Richmond, Richmond, Virginia 23173, USA
| | - K L Giovanetti
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - F X Girod
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - D I Glazier
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - E Golovatch
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - R W Gothe
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - K A Griffioen
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - M Guidal
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - L Guo
- Florida International University, Miami, Florida 33199, USA
| | - H Hakobyan
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - N Harrison
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Hattawy
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - T B Hayward
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - D Heddle
- Christopher Newport University, Newport News, Virginia 23606, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - K Hicks
- Ohio University, Athens, Ohio 45701, USA
| | - M Holtrop
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
| | - Y Ilieva
- The George Washington University, Washington, District of Columbia 20052, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - D G Ireland
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - B S Ishkhanov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - E L Isupov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - D Jenkins
- Virginia Tech, Blacksburg, Virginia 24061-0435, USA
| | - H S Jo
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - S Joosten
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Keller
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - M Khachatryan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - A Khanal
- Florida International University, Miami, Florida 33199, USA
| | - M Khandaker
- National Research Centre Kurchatov Institute, Petersburg Nuclear Physics Institute, RU-188300 Gatchina, Russia
| | - C W Kim
- The George Washington University, Washington, District of Columbia 20052, USA
| | - W Kim
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - V Kubarovsky
- Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S E Kuhn
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - L Lanza
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
| | - M Leali
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi di Brescia, 25123 Brescia, Italy
| | - P Lenisa
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - K Livingston
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | - D Marchand
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - N Markov
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - L Marsicano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - V Mascagna
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi dell'Insubria, 22100 Como, Italy
| | - B McKinnon
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Z E Meziani
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - T Mineeva
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - M Mirazita
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - V Mokeev
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - C Munoz Camacho
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - P Nadel-Turonski
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - G Niculescu
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - M Osipenko
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - M Paolone
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - L L Pappalardo
- Universita' di Ferrara , 44121 Ferrara, Italy
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - E Pasyuk
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - W Phelps
- Christopher Newport University, Newport News, Virginia 23606, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - O Pogorelko
- National Research Centre Kurchatov Institute-ITEP, Moscow, 117259, Russia
| | - J W Price
- California State University, Dominguez Hills, Carson, California 90747, USA
| | - Y Prok
- Old Dominion University, Norfolk, Virginia 23529, USA
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - B A Raue
- Florida International University, Miami, Florida 33199, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Ripani
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - A Rizzo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome Italy
| | - P Rossi
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J Rowley
- Ohio University, Athens, Ohio 45701, USA
| | - F Sabatié
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - C Salgado
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - A Schmidt
- The George Washington University, Washington, District of Columbia 20052, USA
| | - R A Schumacher
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Y G Sharabian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - U Shrestha
- Ohio University, Athens, Ohio 45701, USA
| | - O Soto
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - N Sparveris
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Stepanyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - P Stoler
- Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA
| | - I I Strakovsky
- The George Washington University, Washington, District of Columbia 20052, USA
| | - S Strauch
- The George Washington University, Washington, District of Columbia 20052, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - J A Tan
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - N Tyler
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - M Ungaro
- Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L Venturelli
- INFN, Sezione di Pavia, 27100 Pavia, Italy
- Università degli Studi di Brescia, 25123 Brescia, Italy
| | - H Voskanyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - E Voutier
- Universit'e Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - D P Watts
- University of York, York YO10 5DD, United Kingdom
| | - X Wei
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M H Wood
- Canisius College, Buffalo, New York 14208, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - N Zachariou
- University of York, York YO10 5DD, United Kingdom
| | - J Zhang
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - Z W Zhao
- Duke University, Durham, North Carolina 27708-0305, USA
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9
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Kim JK, Chun EJ, Yang SY, Kim KS, Kim SS, Kim CW. Development and efficacy of a nested real-time quantitative polymerase chain reaction to identify the cytochrome c oxidase subunit 1 gene of Sarcoptes scabiei var. hominis for diagnosis and monitoring of ordinary scabies. Br J Dermatol 2020; 183:1116-1117. [PMID: 32594512 DOI: 10.1111/bjd.19340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/17/2020] [Accepted: 06/20/2020] [Indexed: 11/28/2022]
Affiliation(s)
- J K Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - E J Chun
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Yang
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - K S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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10
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Lee K, Lim S, Park H, Woo HY, Chang Y, Sung E, Jung HS, Yun KE, Kim CW, Ryu S, Kwon MJ. Subclinical thyroid dysfunction, bone mineral density, and osteoporosis in a middle-aged Korean population. Osteoporos Int 2020; 31:547-555. [PMID: 31720711 DOI: 10.1007/s00198-019-05205-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 10/22/2019] [Indexed: 12/01/2022]
Abstract
UNLABELLED Thyroid dysfunction is associated with the loss of bone density (osteoporosis). However, the connection between subclinical thyroid dysfunction and osteoporosis remains controversial. This study found no apparent association between subclinical hypothyroidism or subclinical hyperthyroidism and bone mineral density (BMD) in the lumbar spine and femur. INTRODUCTION The present study examined the relationship between subclinical thyroid dysfunction and BMD in healthy middle-aged adults. METHODS A total of 25,510 healthy Koreans with normal free thyroxine levels were enrolled from January 2011 to December 2016, and 91% of subjects visited only once. The average age of the 15,761 women was 45, and the average age of the 9749 men was 48. Levels of thyroid-stimulating hormone (TSH) and BMD were recorded in all subjects. BMD was measured using dual-energy X-ray absorptiometry. RESULTS No apparent association was found between subclinical thyroid dysfunction and BMD in the lumbar spine, femur-neck, and proximal femur sites compared with a euthyroid group. Age, body mass index (BMI), and postmenopausal status affected BMD in women, and only BMI affected BMD in men. Subclinical hypothyroidism was independently associated with a lower risk of osteoporosis (odds ratio 0.657, 95% confidence interval 0.464-0.930) in 4710 postmenopausal women. CONCLUSIONS No apparent association was found between subclinical hypothyroidism or subclinical hyperthyroidism defined on single TSH measurement and BMD at the lumbar spine and femur in a large cohort of middle-aged men and women. Subclinical hypothyroidism was independently associated with a lower risk of osteoporosis in postmenopausal women.
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Affiliation(s)
- K Lee
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Lim
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Park
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Y Woo
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Y Chang
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - E Sung
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H S Jung
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K E Yun
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - C W Kim
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Ryu
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - M J Kwon
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
- Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
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11
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Oh IR, Raymundo B, Kim M, Kim CW. Mesenchymal stem cells co-cultured with colorectal cancer cells showed increased invasive and proliferative abilities due to its altered p53/TGF-β1 levels. Biosci Biotechnol Biochem 2019; 84:256-267. [PMID: 31601153 DOI: 10.1080/09168451.2019.1676692] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 12/21/2022]
Abstract
Signaling between cancer cells, their neighboring cells, and mesenchymal stem cells (MSCs) forms the tumor microenvironment. The complex heterogeneity of this microenvironment varies depending on the tumor type and its origins. However, most of the existing cancer-based studies have focused on cancer cells. In this study, we used a direct co-culture system (cross-talk signaling) to induce cross-interaction between cancer cells and mesenchymal stem cells. This induced deformation of MSCs. MSCs showed a diminished ability to maintain homeostasis. In particular, increase in the invasion ability of MSCs by TGF-β1 and decrease in p53, which plays a key role in cancer development, is an important discovery. It can thus be deduced that blocking these changes can effectively inhibit metastatic colorectal cancer. In conclusion, understanding the interactions and changes in MSCs associated with cancer will help develop novel therapeutic strategies for cancer.
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Affiliation(s)
- In-Rok Oh
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Bernardo Raymundo
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - MiJung Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.,Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.,Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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12
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Hattawy M, Baltzell NA, Dupré R, Bültmann S, De Vita R, El Alaoui A, El Fassi L, Egiyan H, Girod FX, Guidal M, Hafidi K, Jenkins D, Liuti S, Perrin Y, Stepanyan S, Torayev B, Voutier E, Adhikari S, Angelini G, Ayerbe Gayoso C, Barion L, Battaglieri M, Bedlinskiy I, Biselli AS, Bossù F, Brooks W, Cao F, Carman DS, Celentano A, Chatagnon P, Chetry T, Ciullo G, Clark L, Cole PL, Contalbrigo M, Crede V, D'Angelo A, Dashyan N, De Sanctis E, Defurne M, Deur A, Diehl S, Djalali C, Ehrhart M, Eugenio P, Fegan S, Filippi A, Forest TA, Fradi A, Garçon M, Gavalian G, Gevorgyan N, Gilfoyle GP, Giovanetti KL, Golovatch E, Gothe RW, Griffioen KA, Harrison N, Hauenstein F, Hayward TB, Heddle D, Hicks K, Holtrop M, Ilieva Y, Ireland DG, Isupov EL, Jo HS, Johnston S, Keller D, Khachatryan G, Khachatryan M, Khanal A, Khandaker M, Kim CW, Kim W, Klein FJ, Kubarovsky V, Kuhn SE, Lanza L, L Kabir M, Lenisa P, Livingston K, MacGregor IJD, Marchand D, Markov N, Mayer M, McKinnon B, Meziani ZE, Mineeva T, Mirazita M, Montgomery RA, Munoz Camacho C, Nadel-Turonski P, Niccolai S, Ostrovidov AI, Pappalardo LL, Paremuzyan R, Pasyuk E, Pogorelko O, Poudel J, Prok Y, Protopopescu D, Ripani M, Riser D, Rizzo A, Rosner G, Rossi P, Sabatié F, Salgado C, Schumacher RA, Sharabian YG, Skorodumina I, Sokhan D, Soto O, Sparveris N, Strauch S, Taiuti M, Tan JA, Tyler N, Ungaro M, Voskanyan H, Wang R, Watts DP, Wei X, Weinstein LB, Wood MH, Zachariou N, Zhang J, Zhao ZW. Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering. Phys Rev Lett 2019; 123:032502. [PMID: 31386486 DOI: 10.1103/physrevlett.123.032502] [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: 12/19/2018] [Revised: 03/12/2019] [Indexed: 06/10/2023]
Abstract
In the past two decades, deeply virtual Compton scattering of electrons has been successfully used to advance our knowledge of the partonic structure of the free proton and investigate correlations between the transverse position and the longitudinal momentum of quarks inside the nucleon. Meanwhile, the structure of bound nucleons in nuclei has been studied in inclusive deep-inelastic lepton scattering experiments off nuclear targets, showing a significant difference in longitudinal momentum distribution of quarks inside the bound nucleon, known as the EMC effect. In this Letter, we report the first beam spin asymmetry (BSA) measurement of exclusive deeply virtual Compton scattering off a proton bound in ^{4}He. The data used here were accumulated using a 6 GeV longitudinally polarized electron beam incident on a pressurized ^{4}He gaseous target placed within the CLAS spectrometer in Hall-B at the Thomas Jefferson National Accelerator Facility. The azimuthal angle (ϕ) dependence of the BSA was studied in a wide range of virtual photon and scattered proton kinematics. The Q^{2}, x_{B}, and t dependencies of the BSA on the bound proton are compared with those on the free proton. In the whole kinematical region of our measurements, the BSA on the bound proton is smaller by 20% to 40%, indicating possible medium modification of its partonic structure.
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Affiliation(s)
- M Hattawy
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - N A Baltzell
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Old Dominion University, Norfolk, Virginia 23529, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - R Dupré
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - S Bültmann
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - R De Vita
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - A El Alaoui
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - L El Fassi
- Argonne National Laboratory, Argonne, Illinois 60439, USA
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - H Egiyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - F X Girod
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - M Guidal
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - K Hafidi
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Jenkins
- Virginia Tech, Blacksburg, Virginia 24061-0435, USA
| | - S Liuti
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - Y Perrin
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3, 38026 Grenoble, France
| | - S Stepanyan
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - B Torayev
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - E Voutier
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3, 38026 Grenoble, France
| | - S Adhikari
- Florida International University, Miami, Florida 33199, USA
| | | | - C Ayerbe Gayoso
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - L Barion
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | | | - I Bedlinskiy
- Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia
| | - A S Biselli
- Fairfield University, Fairfield Connecticut 06824, USA
| | - F Bossù
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - W Brooks
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - F Cao
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - D S Carman
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - A Celentano
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - P Chatagnon
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - T Chetry
- Ohio University, Athens, Ohio 45701, USA
| | - G Ciullo
- Universita' di Ferrara, 44121 Ferrara, Italy
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - L Clark
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - P L Cole
- Idaho State University, Pocatello, Idaho 83209, USA
- Lamar University, 4400 MLK Boulevard, P.O. Box 10009, Beaumont, Texas 77710, USA
| | | | - V Crede
- Florida State University, Tallahassee, Florida 32306, USA
| | - A D'Angelo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome, Italy
| | - N Dashyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - E De Sanctis
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - M Defurne
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Deur
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S Diehl
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - C Djalali
- Ohio University, Athens, Ohio 45701, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - M Ehrhart
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - P Eugenio
- Florida State University, Tallahassee, Florida 32306, USA
| | - S Fegan
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - A Filippi
- INFN, Sezione di Torino, 10125 Torino, Italy
| | - T A Forest
- Idaho State University, Pocatello, Idaho 83209, USA
| | - A Fradi
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - M Garçon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - G Gavalian
- Old Dominion University, Norfolk, Virginia 23529, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - N Gevorgyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - G P Gilfoyle
- University of Richmond, Richmond, Virginia 23173, USA
| | - K L Giovanetti
- James Madison University, Harrisonburg, Virginia 22807, USA
| | - E Golovatch
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - R W Gothe
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - K A Griffioen
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - N Harrison
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - F Hauenstein
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - T B Hayward
- College of William and Mary, Williamsburg, Virginia 23187-8795, USA
| | - D Heddle
- Christopher Newport University, Newport News, Virginia 23606, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - K Hicks
- Ohio University, Athens, Ohio 45701, USA
| | - M Holtrop
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
| | - Y Ilieva
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - D G Ireland
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - E L Isupov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - H S Jo
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - S Johnston
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Keller
- Ohio University, Athens, Ohio 45701, USA
- University of Virginia, Charlottesville, Virginia 22901, USA
| | | | - M Khachatryan
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - A Khanal
- Florida International University, Miami, Florida 33199, USA
| | - M Khandaker
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - C W Kim
- The George Washington University, Washington, DC 20052, USA
| | - W Kim
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - F J Klein
- Catholic University of America, Washington, DC 20064, USA
| | - V Kubarovsky
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S E Kuhn
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - L Lanza
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
| | - M L Kabir
- Mississippi State University, Mississippi State, Mississippi 39762-5167, USA
| | - P Lenisa
- INFN, Sezione di Ferrara, 44100 Ferrara, Italy
| | - K Livingston
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | - D Marchand
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - N Markov
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - M Mayer
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - B McKinnon
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Z E Meziani
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - T Mineeva
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - M Mirazita
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | | | - C Munoz Camacho
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - P Nadel-Turonski
- Catholic University of America, Washington, DC 20064, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - S Niccolai
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - A I Ostrovidov
- Florida State University, Tallahassee, Florida 32306, USA
| | | | - R Paremuzyan
- University of New Hampshire, Durham, New Hampshire 03824-3568, USA
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - E Pasyuk
- Arizona State University, Tempe, Arizona 85287-1504, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - O Pogorelko
- Institute of Theoretical and Experimental Physics, Moscow, 117259, Russia
| | - J Poudel
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - Y Prok
- Old Dominion University, Norfolk, Virginia 23529, USA
- University of Virginia, Charlottesville, Virginia 22901, USA
| | | | - M Ripani
- INFN, Sezione di Genova, 16146 Genova, Italy
| | - D Riser
- University of Connecticut, Storrs, Connecticut 06269, USA
| | - A Rizzo
- INFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy
- Universita' di Roma Tor Vergata, 00133 Rome, Italy
| | - G Rosner
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - P Rossi
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - F Sabatié
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - C Salgado
- Norfolk State University, Norfolk, Virginia 23504, USA
| | - R A Schumacher
- Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Y G Sharabian
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - Iu Skorodumina
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, Russia
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - D Sokhan
- University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - O Soto
- Universidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile
| | - N Sparveris
- Temple University, Philadelphia, Pennsylvania 19122, USA
| | - S Strauch
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - M Taiuti
- Universitá di Genova, 16146 Genova, Italy
| | - J A Tan
- Kyungpook National University, Daegu 41566, Republic of Korea
| | - N Tyler
- University of South Carolina, Columbia, South Carolina 29208, USA
| | - M Ungaro
- University of Connecticut, Storrs, Connecticut 06269, USA
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Voskanyan
- Yerevan Physics Institute, 375036 Yerevan, Armenia
| | - R Wang
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - D P Watts
- University of York, York YO10 5DD, United Kingdom
| | - X Wei
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - L B Weinstein
- Old Dominion University, Norfolk, Virginia 23529, USA
| | - M H Wood
- Canisius College, Buffalo, New York, USA
| | - N Zachariou
- University of York, York YO10 5DD, United Kingdom
| | - J Zhang
- Old Dominion University, Norfolk, Virginia 23529, USA
- University of Virginia, Charlottesville, Virginia 22901, USA
| | - Z W Zhao
- Duke University, Durham, North Carolina 27708-0305, USA
- University of South Carolina, Columbia, South Carolina 29208, USA
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13
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Hong J, Kim D, Won Y, Yoon J, Park KJ, Oh J, Kim CW. Correlation between the results of two analytical methods for measuring measles virus neutralizing antibodies in source plasma and therapeutic immunoglobulin products. Biologicals 2019; 59:20-28. [PMID: 30992162 DOI: 10.1016/j.biologicals.2019.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/08/2019] [Accepted: 03/31/2019] [Indexed: 12/18/2022] Open
Abstract
Patients with primary immunodeficiency disorders are vulnerable to infectious diseases. Intravenous immunoglobulin (IVIG) therapeutic products manufactured from human plasma are employed widely to protect patients from pathogens such as measles virus, which causes a potentially fatal and contagious disease. Therefore, health authorities stipulate a minimum titer of measles neutralizing antibodies (mnAbs) in IVIG products to ensure efficient protection. In general, mnAb titers are measured in a cell-based neutralization assay; however, this assay is labor intensive and time consuming, and the results are variable. Here, we compared a cell-based neutralizing assay with several ELISA tests to evaluate whether ELISAs can overcome the limitations of cell-based assays. The mnAb concentrations measured by the ELISAs showed a strong and significant positive correlation with those measured in a cell-based assay. Also, strong positive correlations were identified for measurement of individual source plasmas, which are used as raw materials for manufacturing IVIG products. Measurement by ELISA revealed that about 80% of 198 source plasmas had mnAb concentrations of <500 mIU/mL. These results suggest that quantitative ELISAs based on relevant antigens allow reliable and comprehensive measurement of mnAb concentrations in source plasmas and drug product; these ELISAs are also faster and more accurate than cell-based assay.
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Affiliation(s)
- Jeungwoon Hong
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 02841, Anam-dong, Seoungbuk-gu, Seoul, Republic of Korea; GC Pharma., Ihyeon-ro 30 Beon-gil 107, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, Republic of Korea.
| | - Daegeun Kim
- GC Pharma., Ihyeon-ro 30 Beon-gil 107, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, Republic of Korea.
| | - Younhee Won
- GC Pharma., Ihyeon-ro 30 Beon-gil 107, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, Republic of Korea.
| | - Jungsoon Yoon
- GC Pharma., Ihyeon-ro 30 Beon-gil 107, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, Republic of Korea.
| | - Kuk Jin Park
- GC Pharma., Ihyeon-ro 30 Beon-gil 107, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, Republic of Korea.
| | - Jaetaek Oh
- GC Pharma., Ihyeon-ro 30 Beon-gil 107, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, Republic of Korea.
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 02841, Anam-dong, Seoungbuk-gu, Seoul, Republic of Korea.
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14
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Yim HJ, Kim IH, Suh SJ, Jung YK, Kim JH, Seo YS, Yeon JE, Kim CW, Kwon SY, Park SH, Lee MS, Um SH, Byun KS. Switching to tenofovir vs continuing entecavir for hepatitis B virus with partial virologic response to entecavir: a randomized controlled trial. J Viral Hepat 2018; 25:1321-1330. [PMID: 29772084 DOI: 10.1111/jvh.12934] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 04/16/2018] [Indexed: 12/19/2022]
Abstract
Entecavir 0.5 mg (ETV) is widely used among treatment-naïve chronic hepatitis B (CHB) patients. However, 10%-30% of patients show partial virologic response (PVR) to the drug. If the hepatitis B virus (HBV) continues to replicate, the underlying liver disease may progress. Herein, we compared the efficacy of switching to tenofovir disoproxil fumarate (TDF) with that of continuing ETV in CHB patients with PVR to ETV. This was an open-label randomized controlled trial including CHB patients who had been receiving 0.5 mg of ETV for >12 months, but who still had detectable HBV DNA levels of >60 IU/mL without known resistance to ETV. Sixty patients were enrolled and 45 qualified for the study: Twenty-two patients were randomly assigned into the TDF group and 23 into the ETV group. After 12 months of treatment, the virologic response rate (HBV DNA <20 IU/mL) was significantly higher in the TDF group than in the ETV group, as measured using per-protocol analysis (55% vs 20%; P = .022) and intention-to-treat analysis (50% vs 17.4%; P = .020). The reduction in HBV DNA was greater (-1.13 vs -0.67 log10 IU/mL; P = .024), and the mean HBV DNA level was lower (1.54 vs 2.01 log10 IU/mL; P = .011) in the TDF group than in the ETV group. In conclusion, to achieve optimal response in CHB patients with PVR to ETV, switching to TDF would be a better strategy than continuing ETV. Appropriate modification of therapy would further improve the outcome of chronic HBV infection.
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Affiliation(s)
- H J Yim
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - I H Kim
- Department of Internal Medicine, Chonbuk National University Hospital, Jeonju, South Korea
| | - S J Suh
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, South Korea
| | - Y K Jung
- Department of Internal Medicine, Korea University Ansan Hospital, Ansan, South Korea.,Department of Internal Medicine, Gachon University Gil Hospital, Incheon, South Korea
| | - J H Kim
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, South Korea
| | - Y S Seo
- Department of Internal Medicine, Korea University Anam Hospital, Seoul, South Korea
| | - J E Yeon
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, South Korea
| | - C W Kim
- Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S Y Kwon
- Department of Internal Medicine, Konkuk University Hospital, Seoul, South Korea
| | - S H Park
- Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - M S Lee
- Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, South Korea
| | - S H Um
- Department of Internal Medicine, Korea University Anam Hospital, Seoul, South Korea
| | - K S Byun
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, South Korea
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15
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Yoo SH, Kwon JH, Nam SW, Kim HY, Kim CW, You CR, Choi SW, Cho SH, Han JY, Song DS, Chang UI, Yang JM, Lee HL, Lee SW, Han NI, Kim SH, Song MJ, Hwang S, Sung PS, Jang JW, Bae SH, Choi JY, Yoon SK. Early development of de novo hepatocellular carcinoma after direct-acting agent therapy: Comparison with pegylated interferon-based therapy in chronic hepatitis C patients. J Viral Hepat 2018; 25:1189-1196. [PMID: 29660199 DOI: 10.1111/jvh.12918] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/26/2018] [Indexed: 01/18/2023]
Abstract
Patients with chronic hepatitis C who achieve a sustained viral response after pegylated interferon therapy have a reduced risk of hepatocellular carcinoma, but the risk after treatment with direct-acting antivirals is unclear. We compared the rates of early development of hepatocellular carcinoma after direct-acting antivirals and after pegylated interferon therapy. We retrospectively analysed 785 patients with chronic hepatitis C who had no history of hepatocellular carcinoma (211 treated with pegylated interferon, 574 with direct-acting antivirals) and were followed up for at least 24 weeks after antiviral treatment. De novo hepatocellular carcinoma developed in 6 of 574 patients receiving direct-acting antivirals and in 1 of 211 patients receiving pegylated interferon. The cumulative incidence of early hepatocellular carcinoma development did not differ between the treatment groups either for the whole cohort (1.05% vs 0.47%, P = .298) or for those patients with Child-Pugh Class A cirrhosis (3.73% vs 2.94%, P = .827). Multivariate analysis indicated that alpha-fetoprotein level >9.5 ng/mL at the time of end-of-treatment response was the only independent risk factor for early development of hepatocellular carcinoma in all patients (P < .0001, hazard ratio 176.174, 95% confidence interval 10.768-2882.473) and in patients treated with direct-acting agents (P < .0001, hazard ratio 128.402, 95% confidence interval 8.417-1958.680). In conclusion, the rate of early development of hepatocellular carcinoma did not differ between patients treated with pegylated interferon and those treated with direct-acting antivirals and was associated with the serum alpha-fetoprotein level at the time of end-of-treatment response.
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Affiliation(s)
- S H Yoo
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incehon, Korea.,Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea
| | - J H Kwon
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incehon, Korea.,Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea
| | - S W Nam
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incehon, Korea.,Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea
| | - H Y Kim
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea
| | - C W Kim
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea
| | - C R You
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S W Choi
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S H Cho
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J-Y Han
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - D S Song
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - U I Chang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - J M Yang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - H L Lee
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - S W Lee
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - N I Han
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - S-H Kim
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - M J Song
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - S Hwang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - P S Sung
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J W Jang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S H Bae
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J Y Choi
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S K Yoon
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
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16
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Hahm JE, Kim CW, Kim SS. The efficacy of a nested polymerase chain reaction in detecting the cytochrome c oxidase subunit 1 gene of Sarcoptes scabiei var. hominis for diagnosing scabies. Br J Dermatol 2018; 179:889-895. [PMID: 29624634 DOI: 10.1111/bjd.16657] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND A widespread scabies infestation, associated with long-term residence in nursing homes, is becoming an issue in high-income countries. Mineral oil examination is regarded as the gold standard in diagnosing scabies, but the sensitivity of this method is generally low - approximately 50%. Molecular techniques may contribute to enhancing the sensitivity of current tests for laboratory diagnosis of human scabies. OBJECTIVES To develop new primers for a nested polymerase chain reaction (PCR) for the cytochrome c oxidase subunit 1 (cox1) gene of Sarcoptes scabiei var. hominis to increase the sensitivity of a previously developed conventional PCR. METHODS Patients with clinically suspected scabies underwent dermoscopy-guided skin scraping with microscopic examination. The diagnosis was positive for scabies when mites or eggs were found under the microscope, and patients were then designated as 'microscopy positive'. Patients who presented with negative microscopic results were placed in the 'microscopy-negative' group. Skin scrapings were collected from both groups for PCR. RESULTS Of the total 63 samples, 28 were microscopy positive and 35 were negative with no differences in sex and age between the two groups. All microscopically proven cases of scabies were positive using the cox1 nested PCR. Among microscopy-negative samples, S. scabieiDNA was detected in nine. If sensitivity of the cox1 nested PCR is considered 100% [95% confidence interval (CI) 90·5-100], then sensitivity of microscopy is 75·7% (95% CI 58·8-88·2; P = 0·004). CONCLUSIONS Nested PCR can be successfully used as an alternative method for diagnosing suspected scabies. Therefore, infection control measures and treatments can be initiated before significant transmission occurs, minimizing the risk of outbreaks.
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Affiliation(s)
- J E Hahm
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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17
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Jeong WY, Kim JH, Kim CW. Co-culture of human bone marrow mesenchymal stem cells and macrophages attenuates lipopolysaccharide-induced inflammation in human corneal epithelial cells. Biosci Biotechnol Biochem 2018; 82:800-809. [PMID: 29452534 DOI: 10.1080/09168451.2018.1438167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Dry eye syndrome (DES) is considered as an ocular surface inflammatory disease. Previous studies have shown inflammation plays an important role in the progression and onset of DES. Co-culture of human bone marrow mesenchymal stem cells (HBMSCs) and macrophages showed immunomodulatory effects via regulation of cytokine regulation. Thus, the aim of this study was to investigate the effect of the interaction of these cells on in vitro DES model. The conditioned media (CM) from macrophages, HBMSCs, and HBMSCs + macrophages were treated to human corneal epithelial cells, which showed significant reduction in IL-1α and IL-1β expression levels in HBMSCs + macrophages group. Moreover, the IL-1 Receptor Antagonist (IL-1RA) was highly expressed in the CM from the HBMSCs + macrophages group. Wounded eyes of mice were treated with IL-1RA at 0-100 ng/mL for 16 h, the wound size was reduced. The results of this study might lead to the identification of new therapeutic targets for DES.
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Affiliation(s)
- Won-Yong Jeong
- a Department of Biotechnology, College of Life Sciences and Biotechnology , Korea University , Seoul , Republic of Korea
| | - Ji-Hye Kim
- a Department of Biotechnology, College of Life Sciences and Biotechnology , Korea University , Seoul , Republic of Korea.,b National Institute of Food and Drug Safety Evaluation , Ministry of Food and Drug Safety , Cheongju , Republic of Korea
| | - Chan-Wha Kim
- a Department of Biotechnology, College of Life Sciences and Biotechnology , Korea University , Seoul , Republic of Korea
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18
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Jeong WY, Yoo HY, Kim CW. β-cellulin promotes the proliferation of corneal epithelial stem cells through the phosphorylation of erk1/2. Biochem Biophys Res Commun 2018; 496:359-366. [PMID: 29331377 DOI: 10.1016/j.bbrc.2018.01.054] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 01/09/2018] [Indexed: 11/17/2022]
Abstract
The proliferation of corneal epithelial stem cells (CESCs) is a very important process in the recovery of corneal wounds. Recent studies have shown that β-cellulin (BC) is effective in the repair of other tissues. However, its mechanism of action in corneal wound healing is not yet clear. The purpose of this study was to investigate how BC accelerates wound healing of the cornea. Here, we confirmed that the proliferation of CESCs was induced at a specific concentration (0.2, 2 and 20 ng/mL) by treatment with BC. Markers associated with proliferation activity (ΔNp63, bmi-1, abcg2) were also upregulated. In vivo experiments showed that the corneal wound healing rate was increased in mice. We found that BC stimulates the phosphorylation of the erk1/2 signaling pathway, which is triggered during the recovery of mouse corneal wounds. However, the inhibition of erk1/2 phosphorylation delayed the recovery of mouse corneal wounds in an organ culture assay. According to these results, BC may be a potential treatment factor for corneal wound healing.
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Affiliation(s)
- Won-Yong Jeong
- Department of Biotechnology, BK21 Plus Program, College of Life Sciences and Biotechnology, Korea University, 1-5, Anam Dong, Seongbuk-Gu, Seoul 136-701, South Korea
| | - Hye-Young Yoo
- Department of Biotechnology, BK21 Plus Program, College of Life Sciences and Biotechnology, Korea University, 1-5, Anam Dong, Seongbuk-Gu, Seoul 136-701, South Korea
| | - Chan-Wha Kim
- Department of Biotechnology, BK21 Plus Program, College of Life Sciences and Biotechnology, Korea University, 1-5, Anam Dong, Seongbuk-Gu, Seoul 136-701, South Korea.
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19
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Hong J, Lee B, Kang K, Lee SH, Ryu J, Jung G, Oh J, Jo EC, Kim CW. Characterisation of the site-specific monoPEGylated rhG-CSF analogue pegteograstim. Biologicals 2018; 51:54-61. [DOI: 10.1016/j.biologicals.2017.10.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 10/12/2017] [Accepted: 10/14/2017] [Indexed: 10/18/2022] Open
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Hong JY, Kim CW, Noh H, Lee DH, Kim SE, Lee SJ. The Effect of Animation-Assisted Informed Consent Using Tablet Personal Computer for Contrast-Enhanced Computed-Tomography in Emergency Department. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791201900404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction Informed consent is essential patient's right even in overcrowded emergency department (ED). We compared the effect of animation-assisted informed consent using tablet PC with the standard informed consent for contrast-enhanced computed-tomography (CT) in ED. Methods We included 150 patients scheduled to undergo contrast-enhanced CT in ED from November 2010 through January 2011. Participants were randomised to either animation-assisted information (AAI) (n=75) or standard verbal information (SVI) group (n=75). AAI was provided by tablet personal computer (PC); and SVI by clinicians. All participants completed 10-point scale questionnaires after the CT scan. The questionnaires included two main categories – understanding and satisfaction of informed consent. Results Participants in the AAI group had a better understanding of purpose (8.95±1.48 vs. 8.32±1.88, p=0.026) and methods (8.93±1.43 vs. 8.37±1.83, p=0.048) of CT scans compared to participants in the SVI group. Every score in satisfaction categories was significantly higher in the AAI group. In the SVI group, relatively low-educated participants had a lower score in understanding when compared with university-educated participants (7.53±2.28 vs. 8.52±1.40, p=0.029). Regardless of education level, understanding score was high in the AAI group (8.73±1.27 vs. 8.57±1.50, p=0.71). Conclusions Participants receiving animation assisted informed consent with tablet PC shows a higher degree of understanding and satisfaction compared with patients receiving standard verbal informed consent. Particularly in patients with lower education, animation-assisted informed consent may be better for understanding of contrast-enhanced CT.
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Affiliation(s)
- JY Hong
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | - CW Kim
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | | | - DH Lee
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | - SE Kim
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
| | - SJ Lee
- Chung-Ang University College of Medicine, Department of Emergency Medicine, Chung-Ang University Medical Center, Heukseok-dong, Dongjak-gu, Seoul, 156-755, Korea
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Abstract
Introduction The events of 11th September 2001, and the subsequent anthrax attacks in the United States brought the threat of bioterrorism to the forefront of concern for public health departments. Moreover, the rising confrontation between North and South Korea emphasizes the possibility of aggression with biological weapons and our vulnerability to bioterrorism. While the importance of physicians' interests and management ability is becoming more critical, no studies have yet been undertaken in Korea to assess whether primary care physicians are well informed and capable of managing bioterrorism. This study evaluates the awareness and response of young male physicians to potential bioterrorism in South Korea. Method A total of 692 young male physicians completed the knowledge and awareness survey during the education period of military service on 9th April 2005. Results Forty-five percent of the participants responded that the possibility of biological warfare in Korea was high. The level of bioterrorism knowledge, however, was low. Eighty-seven percent acknowledged the necessity of education and training for bioterrorism, and 69.9% were willing to accept education and training in bioterrorism preparedness. Conclusion These findings suggest that young physicians should receive continuous education and training to improve preparedness for biological terrorism and warfare in South Korea.
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Affiliation(s)
- JH Ahn
- Chung-Ang University Hospital, Department of Internal Medicine, Chung-Ang University College of Medicine, 224-1, Heukseok-dong, Dongjak-gu, 156-757, Seoul, Korea
| | - JW Chung
- Chung-Ang University Hospital, Department of Internal Medicine, Chung-Ang University College of Medicine, 224-1, Heukseok-dong, Dongjak-gu, 156-757, Seoul, Korea
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Abstract
Background Escalator-related injuries have been considered uncommon and most likely to occur in children. In this study, we described the epidemiology of these injuries with focus on the aged population in order to determine whether escalators are safe for the aged, and to obtain information to help in preventing escalator-related injuries. Methods A prospective survey was taken to identify the number and nature of these injuries from May 2004 to December 2008. We enrolled patients who had sustained escalator-related injuries. A standard list of questions and answers were recorded by the emergency physician. A total of 104 questionnaires were completed during the study period. Results The average patient age was 59.2±24.0 years (range 1-94). There were 64 (61.5%) females. Only 11 (10.6%) were younger than 15 years old, and 59 (56.7%) were aged 65 or above; 35 (59.3%) of the aged people were injured while standing on the escalator. However, out of the 45 patients younger than age 65, 22 (48.9%) were injured from walking on a moving escalator. Head injury was the commonest site of injury overall and all were due to fall or slipping down. Conclusions Escalator-related injuries are not as rare as previously believed and the aged population 65 years old or above is the highest risk group. In particular, walking on a moving escalator was the main cause of injury in people under age 65. Therefore, primary prevention strategies are needed to prevent users from walking on escalators, especially young people, and educate aged people the safe utilization of escalators to prevent slip and fall injuries.
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Abstract
Airbags and seat belts are safety devices in automobiles. First invented in the 1950s, they are now commonplace in most automobiles. However, a seat occupant may sustain unexpected injuries even if the airbag deploys in a car collision. We describe a patient who was suspected of simultaneously sustaining haemopericardium and liver laceration during the “punch out” and “membrane force” phases of airbag deployment. The patient's vital signs stabilised after an emergency pericardiocentesis was performed. In a car accident when high-energy injury is suspected despite airbag deployment, computed tomography of the chest and abdomen or echocardiography should be considered because of the possibility of abdominal solid organ and chest injury.
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Abstract
Cases of deep venous thrombosis (DVT) and pulmonary thromboembolism (PTE) related to the isolated risk factor of uterine myoma are very rare. In a setting of emergency department (ED), it is unlikely that uterine myoma would be suspected as the primary cause of symptoms in a patient with thromboembolism. We presented a 44-year-old woman who visited the ED for DVT presenting with right lower leg swelling with an underlying cause of a huge uterine myoma. Various aetiologies, including obstetric and gynaecological causes (especially uterine myoma), should be considered in female patients visiting the ED with suspected DVT or PTE.
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Oh JH, Kim CW, Kim SE, Lee DH. Does the Bed Frame Deflection Occur along with Mattress Deflection during In-Hospital Cardiopulmonary Resuscitation? an Experiment Using Mechanical Devices. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791602300205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objectives When we perform chest compression on a patient on a bed, the mattress and bed frame can be depressed together with the patient's chest. This study was conducted to assess whether bed frame deflection occurred during chest compressions. Methods We designed a firm bed (“bed like the ground,” BLG) to assess the bed frame deflection in the Stryker Trauma Stretcher (STS) and the ER stretcher cart (ER-SC). The STS included a soft mattress and the ER-SC a hard mattress. We performed 50 continuous chest compressions on the Resusci Anne Skill Reporter with CPRmeter in each experiment. The experiments were done in four settings. Test 1 included the BLG; test 2 included a mattress and backboard on each bed; test 3 included the mattress of each bed and a backboard on the BLG; and test 4 included the mattress of each bed on the BLG. We calculated the mattress and bed frame deflections using the gaps of compression depths between the values measured by Resusci Anne and CPRmeter. Results The mattress deflections of the STS and ER-SC mattress were determined to be 11.2 and 0.67 mm, respectively. The bed frame deflection for the STS and ER-SC were 0.95 and 5.17 mm, respectively. Conclusion The study confirms that bed frame deflection will occur when we perform chest compressions on the manikin lying on a bed. Additionally, the bed frame deflections differ depending on the type of bed. (Hong Kong j.emerg.med. 2016;23:35-41)
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Kim SE, Lee SJ, Noh H, Lee DH, Kim CW. Is There Any Difference in Cardiopulmonary Resuscitation Performance According to Different Instructional Models of Cardiopulmonary Resuscitation Education for Junior and Senior High School Students? HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791101800602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective This study aims to determine whether or not cardiopulmonary resuscitation (CPR) skills differ according to different instructional models for CPR education and training for junior and senior high school students. Methods This was a prospective and randomised study including 519 junior and senior high school students. After the lecture on CPR, students practiced the skill on the manikin. Group 1 used model 1 and Group 2 used model 2 for practical training and practical skills and CPR performance quality were evaluated. Results Data from skill tests were analysed in 229 students in group 1 and 210 students in group 2. The total score of sequence skill tests was 17.8±2.0 points. During 2 cycles, no chest elevation was observed in 33.3% and was significantly lower in group 1. There were no significant differences in the frequency of proper ventilation and in ventilation volume between the 2 groups. Excessive ventilation was more frequently observed in group 1 and insufficient ventilation was observed more frequently in group 2. The percentage of the frequency of a proper chest compression rate was 80.5±31.2% and there were no significant differences in proper and insufficient depths, mean rate and recoil of the chest in chest compression between the 2 groups. Conclusions There were differences in CPR skills according to different CPR training manikins. Therefore, certain conditions seem to be considered in selection of instructional models for CPR psychomotor skills. (Hong Kong j.emerg.med. 2011;18:375-382)
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Affiliation(s)
- SE Kim
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - SJ Lee
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - H Noh
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
| | - DH Lee
- Myongji Hospital, Department of Emergency Medicine, Seoul, Korea; Noh Hyun, MD
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Abstract
Pneumomediastinum is an uncommon radiographic finding resulting from various causes, such as trauma, infection and unknown causes. The pneumomediastinum due to minor trauma is rarely reported and treatment and diagnostic process is not established. We report on a 20-year-old female patient who initially presented with neck pain and dyspnoea following manual strangulation. Her chest X-ray and computed tomography (CT) of neck imaging showed subcutaneous emphysema and extensive pneumomediastinum, but pneumothorax was not shown. She was transferred to the thoracic surgery and admitted to the general ward. The patient's condition improved and she was discharged on the sixth hospital day. In conclusion, patients with pneumomediastinum following a minor strangulation injury can be observed alone without invasive testing or repeated imaging. CT scans are of great value for safe observation in determined patients and for the further evaluation of pneumomediastinum.
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Affiliation(s)
| | | | | | - JH Hong
- Chung-Ang University Hosiptal, Department of Thoracic and Cardiovascular Surgery, College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, Korea
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Abstract
Corneal epithelial cells (CECs) play an important role in the function of the cornea, and are maintained by corneal epithelial stem cells (CESCs). Recent studies have shown that neuronal growth factors affect the proliferation and migration of CESCs. Neuregulin-1 (NR-1) is a neuronal growth factor that is expressed in the early stages of brain development. The aim of this study was to determine whether NR-1 activates corneal wound healing. We observed that NR-1 activated both proliferation and migration of CECs. In addition, the colony-forming efficacy of CESCs was enhanced. In mice, NR-1 treatment improved corneal wound healing. Furthermore, the expression of markers of corneal epithelium maintenance (ΔNp63) and CESC proliferation (Bmi-1 and Abcg2) was increased. These effects were mediated by intracellular signalling pathways (Stat3, Erk1/2 and p38). Taken together, our results suggest that NR-1 accelerates the recovery of corneal wounds, and may represent a novel treatment for corneal damage.
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Affiliation(s)
- Won-Yong Jeong
- a Department of Biotechnology, BK21 Plus Program, College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
| | - Hye-Young Yoo
- a Department of Biotechnology, BK21 Plus Program, College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
| | - Chan-Wha Kim
- a Department of Biotechnology, BK21 Plus Program, College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
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Lee HK, Kim MK, Kim HD, Kim HJ, Kim JW, Lee JO, Kim CW, Kim EE. Unique binding mode of Evogliptin with human dipeptidyl peptidase IV. Biochem Biophys Res Commun 2017; 494:452-459. [PMID: 29061303 DOI: 10.1016/j.bbrc.2017.10.101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 10/19/2017] [Indexed: 01/09/2023]
Abstract
Evogliptin ((R)-4-((R)-3-amino-4-(2,4,5-trifluorophenyl)butanoyl)-3-(tert-butoxymethyl) piperazine-2-one)) is a highly potent selective inhibitor of dipeptidyl peptidase IV (DPP4) that was approved for the treatment of type 2 diabetes in South Korea. In this study, we report the crystal structures of Evogliptin, DA-12166, and DA-12228 (S,R diastereomer of Evogliptin) complexed to human DPP4. Analysis of both the structures and inhibitory activities suggests that the binding of the trifluorophenyl moiety in the S1 pocket and the piperazine-2-one moiety have hydrophobic interactions with Phe357 in the S2 extensive subsite, and that the multiple hydrogen bonds made by the (R)-β-amine group in the S2 pocket and the contacts made by the (R)-tert-butyl group with Arg125 contribute to the high potency observed for Evogliptin.
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Affiliation(s)
- Hyung Ki Lee
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea; Dong-A Socio R&D Center, Yongin, Republic of Korea; School of Life Sciences and Biotechnology Korea University, Seoul, Republic of Korea
| | - Mi-Kyung Kim
- Dong-A Socio R&D Center, Yongin, Republic of Korea
| | - Ha Dong Kim
- Dong-A Socio R&D Center, Yongin, Republic of Korea
| | | | - Ji Won Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Jie-Oh Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Chan-Wha Kim
- School of Life Sciences and Biotechnology Korea University, Seoul, Republic of Korea
| | - Eunice EunKyeong Kim
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.
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Kim HY, Kim CW, Choi JY, Yu DS, Kim JW, Han KD, Park YG, Lee YB. Atopic dermatitis is inversely associated with hepatitis B antigen positivity: a population-based cohort study. J Eur Acad Dermatol Venereol 2017. [PMID: 28646620 DOI: 10.1111/jdv.14428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND No clear association between hepatitis B virus (HBV) infection and atopic dermatitis (AD) has been established. Some studies have reported that subjects with HBV had an increased risk of atopy; other studies reported an inverse association between HBV seropositivity and allergic diseases. OBJECTIVE We evaluated the association between AD and hepatitis B antigen (HBsAg) positivity using Korean National Health and Nutrition Examination Survey data. METHODS In total, 14 776 participants aged >19 years were included in the analysis. Multiple logistic regression analyses were used to evaluate the odds ratio of HBsAg positivity in association with AD and asthma. RESULTS The prevalence of HBsAg positivity was lower in individuals with AD than in those without AD (mean [SE], 0.7% [0.4] vs. 3.7% [0.2]; P < 0.001). However, HBsAg positivity was not significantly associated with asthma (3.7% [0.2] vs. 2.8% [0.8]; P < 0.001). HBsAg positivity decreased the risk of AD significantly (OR = 0.223; 95% CI = 0.069-0.72). CONCLUSIONS This study demonstrates an inverse association between AD and HBsAg positivity using a nationwide, population-based, cross-sectional health examination and survey.
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Affiliation(s)
- H Y Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - C W Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J Y Choi
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D S Yu
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J W Kim
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - K D Han
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y G Park
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y B Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Yu GE, Kwon S, Hwang JH, An SM, Park DH, Kang DG, Kim TW, Kim IS, Park HC, Ha J, Kim CW. Effects of cell death-inducing DFF45-like effector B on meat quality traits in Berkshire pigs. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029408. [PMID: 28549200 DOI: 10.4238/gmr16029408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cell death-inducing DFF45-like effector (CIDE) B is a member of the CIDE family of apoptosis-inducing factors. In the present study, we detected a single nucleotide polymorphism (SNP), c.414G>A, which corresponds to the synonymous SNP 414Arg, in CIDE-B in the Berkshire pigs. We also analyzed the relationships between the CIDE-B SNP and various meat quality traits. The SNP was significantly associated with post-mortem pH24h, water-holding capacity (WHC), fat content, protein content, drip loss, post-mortem temperature at 12 h (T12) and 24 h (T24) in a co-dominant model (P < 0.05). A significant association was detected between the SNP and post-mortem pH24h, fat content, protein content, drip loss, shear force, and T24 in gilts; and color parameter b*, WHC, and T24 in barrows (P < 0.05). The SNP was significantly correlated with the fat content, and CIDE-B mRNA expression was significantly upregulated during the early stage of adipogenesis, suggesting that CIDE-B may contribute towards initiation of adipogenesis (P < 0.05). Furthermore, CIDE-B mRNA was strongly expressed in the liver, kidney, large intestine, and small intestine, and weakly expressed in the stomach, lung, spleen, and white adipose tissue. These results indicate that the CIDE-B SNP is closely associated with meat quality traits and may be a useful DNA marker for improving pork quality.
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Affiliation(s)
- G E Yu
- Swine Science and Technology Center, , , South Korea
| | - S Kwon
- Swine Science and Technology Center, , , South Korea
| | - J H Hwang
- Swine Science and Technology Center, , , South Korea
| | - S M An
- Swine Science and Technology Center, , , South Korea
| | - D H Park
- Swine Science and Technology Center, , , South Korea
| | - D G Kang
- Swine Science and Technology Center, , , South Korea
| | - T W Kim
- Swine Science and Technology Center, , , South Korea
| | - I-S Kim
- Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Gyeongnam, South Korea
| | - H C Park
- Dasan Pig Breeding Co., Namwon-si, South Korea
| | - J Ha
- Swine Science and Technology Center, , , South Korea
| | - C W Kim
- Swine Science and Technology Center, , , South Korea
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Aikins AR, Hong SW, Kim HJ, Yoon CH, Chung JH, Kim M, Kim CW. Extremely low-frequency electromagnetic field induces neural differentiation of hBM-MSCs through regulation of (Zn)-metallothionein-3. Bioelectromagnetics 2017; 38:364-373. [PMID: 28370392 DOI: 10.1002/bem.22046] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 02/14/2017] [Indexed: 11/11/2022]
Abstract
Extremely low-frequency electromagnetic field (ELFEMF) can stimulate neural differentiation in human bone marrow-derived mesenchymal cells (hBM-MSCs), and this provides an opportunity for research on neurodegenerative diseases such as Alzheimer's disease (AD). Metallothionein-3 (MT3), an isoform of the metal-binding proteins, metallothioneins, involved in maintaining intracellular zinc (Zn) homeostasis and the deregulation of zinc homeostasis, has separately been implicated in AD. Here, we investigated the effect of ELFEMF-induced neural differentiation of hBM-MSCs on Zn-MT3 homeostatic interaction. Exposure to ELFEMF induced neural differentiation of hBM-MSCs, which was characterized by decreased proliferation and enhanced neural-like morphology. We observed expression of neuronal markers such as β-tubulin3, pleiotrophin, and neurofilament-M at the mRNA level and MAP2 at the protein level. ELFEMF-induced neural differentiation correlated with decreased expression of metal-response element-transcription factor 1 and MT3, as well as decreased intracellular Zn concentration. In addition, upregulation of dihydropyrimidinase-related protein 2 was observed, but there was no change in γ-enolase expression. These data indicate a possible regulatory mechanism for MT3 during neural differentiation. Our findings provide considerable insight into molecular mechanisms involved in neural differentiation, which is useful for developing new treatments for neurodegenerative diseases. Bioelectromagnetics. 38:364-373, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Anastasia Rosebud Aikins
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.,Department of Biochemistry, Cell and Molecular Biology, School of Biological Sciences, College of Basic and Applied Sciences, University of Ghana, Accra, Ghana
| | - Sung-Won Hong
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Hyun-Jung Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Cheol-Ho Yoon
- Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Joo-Hee Chung
- Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - MiJung Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Jeong WY, Kim JB, Kim HJ, Kim CW. Extremely low-frequency electromagnetic field promotes astrocytic differentiation of human bone marrow mesenchymal stem cells by modulating SIRT1 expression. Biosci Biotechnol Biochem 2017; 81:1356-1362. [PMID: 28351214 DOI: 10.1080/09168451.2017.1308243] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
It has been shown that extremely low-frequency electromagnetic fields (ELFMF) affect regulation of cell fate and differentiation. Thus, the aim of this study was to investigate the role of ELFMFs in the enhancement of astrocytic differentiation. ELFMF exposure reduced the rate of proliferation and enhanced astrocytic differentiation. The ELFMF-treated cells showed increased levels of the astrocyte marker (GFAP), while those of the early neuronal marker (Nestin) and stemness marker (OCT3/4) were downregulated. The reactive oxygen species (ROS) level was observed to be significantly elevated after ELFMF exposure, which strengthens the modulatory role of SIRT1 and SIRT1 downstream molecules (TLE1, HES1, and MASH1) during astrocytic differentiation. After nicotinamide (5 mM) mediated inhibition of SIRT1, levels of TLE1, HES1, and MASH1 were examined; TLE1 was significantly upregulated and MASH1 was downregulated. These results suggest that ELFMFs induce astrocytic differentiation through activation of SIRT1 and SIRT1 downstream molecules.
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Affiliation(s)
- Won-Yong Jeong
- a College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
| | - Jun-Beom Kim
- a College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
| | - Hyun-Jung Kim
- a College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
| | - Chan-Wha Kim
- a College of Life Sciences and Biotechnology , Korea University , Seoul , Korea
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Ha BH, Shin SC, Moon JH, Keum G, Kim CW, Kim EE. Structural and biochemical characterization of FabK from Thermotoga maritima. Biochem Biophys Res Commun 2017; 482:968-974. [PMID: 27908729 DOI: 10.1016/j.bbrc.2016.11.141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 11/25/2016] [Indexed: 11/26/2022]
Abstract
TM0800 from Thermotoga maritima is one of the hypothetical proteins with unknown function. The crystal structure determined at 2.3 Å resolution reveals a two domain structure: the N-terminal domain forming a barrel and the C-terminal forming a lid. One FMN is bound between the two domains with the phosphate making intricate hydrogen bonds with protein and three tightly bound water molecules, and the isoalloxazine ring packed against the side chains of Met22 and Met276. The structure is almost identical to that of FabK (enoyl-acyl carrier protein (ACP) reductase, ENR II), a key enzyme in bacterial type II fatty-acid biosynthesis that catalyzes the final step in each elongation cycle; and the enzymatic activity confirms that TM0800 is an ENR. Enzymatic activity was almost completely abolished when the helices connecting the barrel and the lid were deleted. Also, the Met276Ala and Ser280Ala mutants showed a significant reduction in enzymatic activity. The crystal structure of Met276Ala mutant at 1.9 Å resolution showed an absence of FMN suggesting that FMN plays a role in catalysis, and Met276 is important in positioning FMN. TmFabK exists as a dimer in both solution and crystal. Together this study provides molecular basis for the catalytic activity of FabK.
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Affiliation(s)
- Byung Hak Ha
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Sang Chul Shin
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; School of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Jin Ho Moon
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Gyochang Keum
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Chan-Wha Kim
- School of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Eunice EunKyeong Kim
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
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Aikins AR, Kim M, Raymundo B, Kim CW. Downregulation of transgelin blocks interleukin-8 utilization and suppresses vasculogenic mimicry in breast cancer cells. Exp Biol Med (Maywood) 2017; 242:573-583. [PMID: 28058861 DOI: 10.1177/1535370216685435] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 02/06/2023] Open
Abstract
Vasculogenic mimicry (VM) is a non-classical mechanism recently described in many tumors, whereby cancer cells, rather than endothelial cells, form blood vessels. Transgelin is an actin-binding protein that has been implicated in multiple stages of cancer development. In this study, we investigated the role of transgelin in VM and assessed its effect on the expression of endothelial and angiogenesis-related genes during VM in MDA-MB-231 breast cancer cells. We confirmed the ability of MDA-MB-231 cells to undergo VM through a tube formation assay. Flow cytometry analysis revealed an increase in the expression of the endothelial-related markers VE-cadherin and CD34 in cells that underwent VM, compared with those growing in a monolayer, which was confirmed by immunocytochemistry. We employed siRNA to silence transgelin, and knockdown efficiency was determined by western blot analyses. Downregulation of transgelin suppressed cell proliferation and tube formation, but increased IL-8 levels in Matrigel cultures. RT-PCR analyses revealed that the expression of IL-8, VE-cadherin, and CD34 was unaffected by transgelin knockdown, indicating that increased IL-8 expression was not due to enhanced transcriptional activity. More importantly, the inhibition of IL-8/CXCR2 signaling also resulted in suppression of VM with increased IL-8 levels, confirming that increased IL-8 levels after transgelin knockdown was due to inhibition of IL-8 uptake. Our findings indicate that transgelin regulates VM by enhancing IL uptake. These observations are relevant to the future development of efficient antivascular agents. Impact statement Vasculogenic mimicry (VM) is an angiogenic-independent mechanism of blood vessel formation whereby aggressive tumor cells undergo formation of capillary-like structures. Thus, interventions aimed at angiogenesis might not target the entire tumor vasculature. A more holistic approach is therefore needed in the development of improved antivascular agents. Transgelin, an actin-binding protein, has been associated with multiple stages of cancer development such as proliferation, migration and invasion, but little is known about its role in vasculogenic mimicry. We present here, an additional mechanism by which transgelin promotes malignancy by way of its association with the occurrence of VM. Although transgelin knockdown did not affect the transcript levels of most of the angiogenesis-related genes in this study, it was associated with the inhibition of the uptake of IL-8, accompanied by suppressed VM, indicating that transgelin is required for VM. These observations are relevant to the future development of efficient antivascular agents.
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Affiliation(s)
- Anastasia R Aikins
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.,2 Department of Biochemistry, Cell and Molecular Biology, College of Basic and Applied Sciences, University of Ghana, Legon, Ghana
| | - MiJung Kim
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.,3 Division of Life Sciences, College of Life Sciences and Biotechnology, Korea University 136-701, Seoul, Korea
| | - Bernardo Raymundo
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
| | - Chan-Wha Kim
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea
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Lee JH, Shin SC, Seo SH, Seo YH, Jeong N, Kim CW, Kim EE, Keum G. Synthesis and in vitro antiproliferative activity of C5-benzyl substituted 2-amino-pyrrolo[2,3- d ]pyrimidines as potent Hsp90 inhibitors. Bioorg Med Chem Lett 2017; 27:237-241. [DOI: 10.1016/j.bmcl.2016.11.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 11/17/2016] [Accepted: 11/22/2016] [Indexed: 12/30/2022]
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Jo JL, Hwang JH, Kwon SG, Park DH, Kim TW, Kang DG, Yu GE, Kim IS, Ha JG, Kim CW. Association between a non-synonymous HSD17B4 single nucleotide polymorphism and meat-quality traits in Berkshire pigs. Genet Mol Res 2016; 15:gmr-15-gmr15048970. [PMID: 27819726 DOI: 10.4238/gmr15048970] [Citation(s) in RCA: 6] [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] [Indexed: 11/03/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are useful genetic markers that allow correlation of genetic sequences with phenotypic traits. It is shown here that HSD17B4, a bifunctional enzyme mediating dehydrogenation and anhydration during β-oxidation of long-chain fatty acids, contains a non-synonymous SNP (nsSNP) of chr2:128,825,976A>G, c.2137A>G, I690V, within the sterol carrier protein-2 domain of the HSD17B4 gene, by RNA-Seq of liver RNA. The HSD17B4 mRNA was highly expressed in the kidney and liver among various other tissues in four pig breeds, namely, Berkshire, Duroc, Landrace, and Yorkshire. The nsSNP was significantly associated with carcass weight, backfat thickness, and drip loss (P < 0.05). Furthermore, HSD17B4 may play a crucial role during the early stages of myogenesis when expression of its mRNA was significantly high. In conclusion, HSD17B4 may serve as a possible regulator of muscle development, and its identification should help to select for improved economic traits of Berkshire pigs such as carcass weight, backfat thickness, and drip loss.
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Affiliation(s)
- J L Jo
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J H Hwang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - S G Kwon
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D H Park
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - T W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D G Kang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - G E Yu
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - I S Kim
- Department of Animal Resource Technology, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J G Ha
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - C W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
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Kim M, Kim DI, Kim EK, Kim CW. CXCR4 Overexpression in Human Adipose Tissue-Derived Stem Cells Improves Homing and Engraftment in an Animal Limb Ischemia Model. Cell Transplant 2016; 26:191-204. [PMID: 27501830 DOI: 10.3727/096368916x692708] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
We investigated the effects of transplantation of CXCR4-overexpressing adipose tissue-derived stem cells (ADSCs) into a mouse diabetic hindlimb ischemia model on homing and engraftment as early as 48 h after transplant. CXCR4-overexpressing ADSCs were intramuscularly or intravenously injected into diabetic mice with hindlimb ischemia. After 48 h, muscle tissues in the femur and tibia were collected, and the CXCR4 expression pattern was analyzed by immunofluorescence staining. The homing and engraftment of transplanted CXCR4-overexpressing ADSCs into the ischemic area were significantly increased, and intravenous (systemic) injection resulted in the more effective delivery of stem cells to the target site 48 h posttransplantation. Furthermore, CXCR4-overexpressing ADSCs more efficiently contributed to long-term engraftment and muscle tissue regeneration than normal ADSCs in a limb ischemia model. In addition, the homing and engraftment of ADSCs were correlated with the CXCR4 transfection efficiency. These results demonstrated that enhanced CXCR4 signaling could significantly improve the early homing and engraftment of ADSCs into ischemic areas as well as the long-term engraftment and ultimate muscle tissue regeneration.
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Lim SB, Yu CS, Kim CW, Yoon YS, Park IJ, Kim JC. Late anastomotic leakage after low anterior resection in rectal cancer patients: clinical characteristics and predisposing factors. Colorectal Dis 2016; 18:O135-40. [PMID: 26888300 DOI: 10.1111/codi.13300] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/18/2015] [Indexed: 12/12/2022]
Abstract
AIM The purpose was to examine the clinical characteristics and predisposing factors of late anastomotic leakage following low anterior resection for rectal cancer. METHOD We retrospectively evaluated the clinicopathological features of patients who experienced anastomotic leakage after low anterior resection for rectal cancer. Patients were divided into two groups according to the time to leakage: early leakage (within 30 days postoperatively) and late leakage (after 30 days postoperatively). Clinicopathological characteristics were compared between the two groups. RESULTS Anastomotic leakage occurred in 141 patients. Anastomotic leakage was diagnosed at a median of 17 (range 0-886) days postoperatively; 85 (60.3%) and 56 (39.7%) were categorized as the early and late leakage groups, respectively. Radiotherapy (hazard ratio 5.007; 95% CI 2.208-11.354; P < 0.0001) was the only significant independent predisposing factor for late leakage. Diverting stoma did not protect against late leakage. The late leakage group more frequently had the fistula type (46.4% vs. 10.6%; P < 0.001) and less frequently needed laparotomy (55.4% vs. 78.8%; P = 0.001). The rate of long-term stoma over 1 year was greater in the late leakage than the early leakage group (51.8% vs. 29.4%; P = 0.009). CONCLUSION Late anastomotic leakages that develop after 30 days following low anterior resection are not uncommon and may be associated with the use of radiotherapy. Late leakage should be a different entity from early leakage in terms of the type of leakage, methods of management and subsequent sequelae.
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Affiliation(s)
- S-B Lim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - C S Yu
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - C W Kim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - Y S Yoon
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - I J Park
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
| | - J C Kim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Centre, Seoul, Korea
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Kim CW, Park SN, Lee SB, Kim JJ, Lee HW, Kim YK, Yoon SS. Blue Emitters Based on Aryl End-Capped Pyrene Groups for OLEDs. J Nanosci Nanotechnol 2016; 16:2912-2915. [PMID: 27455733 DOI: 10.1166/jnn.2016.11092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have synthesized four pyrene-derived blue emitting materials using Suzuki cross coupling reactions. All OLED devices using these materials as emitting materials showed efficient blue electroluminescence (EL). Particularly, a device using 1,1'-(9,9-dimethyl-9H-fluorene-2,7-diyl)bis-pyrene (1) showed best EL properties with the luminous efficiency of 4.32 cd/A, the power efficiency of 3.98 lm/W and the external quantum efficiency of 2.48% at 500 cd/m2.
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Kim MJ, Koo JE, Han GY, Kim B, Lee YS, Ahn C, Kim CW. Dual-Blocking of PI3K and mTOR Improves Chemotherapeutic Effects on SW620 Human Colorectal Cancer Stem Cells by Inducing Differentiation. J Korean Med Sci 2016; 31:360-70. [PMID: 26955235 PMCID: PMC4779859 DOI: 10.3346/jkms.2016.31.3.360] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/19/2015] [Indexed: 12/28/2022] Open
Abstract
Cancer stem cells (CSCs) have tumor initiation, self-renewal, metastasis and chemo-resistance properties in various tumors including colorectal cancer. Targeting of CSCs may be essential to prevent relapse of tumors after chemotherapy. Phosphatidylinositol-3-kinase (PI3K) and mammalian target of rapamycin (mTOR) signals are central regulators of cell growth, proliferation, differentiation, and apoptosis. These pathways are related to colorectal tumorigenesis. This study focused on PI3K and mTOR pathways by inhibition which initiate differentiation of SW620 derived CSCs and investigated its effect on tumor progression. By using rapamycin, LY294002, and NVP-BEZ235, respectively, PI3K and mTOR signals were blocked independently or dually in colorectal CSCs. Colorectal CSCs gained their differentiation property and lost their stemness properties most significantly in dual-blocked CSCs. After treated with anti-cancer drug (paclitaxel) on the differentiated CSCs cell viability, self-renewal ability and differentiation status were analyzed. As a result dual-blocking group has most enhanced sensitivity for anti-cancer drug. Xenograft tumorigenesis assay by using immunodeficiency mice also shows that dual-inhibited group more effectively increased drug sensitivity and suppressed tumor growth compared to single-inhibited groups. Therefore it could have potent anti-cancer effects that dual-blocking of PI3K and mTOR induces differentiation and improves chemotherapeutic effects on SW620 human colorectal CSCs.
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Affiliation(s)
- Min-Jung Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
- Ministry of Food and Drug Safety, Cheongju, Korea
| | - Jeong-Eun Koo
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Gi-Yeon Han
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Buyun Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Yoo-Sun Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Chiyoung Ahn
- Ministry of Food and Drug Safety, Cheongju, Korea
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Jung EH, Lee HN, Han GY, Kim MJ, Kim CW. Targeting ROR1 inhibits the self-renewal and invasive ability of glioblastoma stem cells. Cell Biochem Funct 2016; 34:149-57. [PMID: 26923195 DOI: 10.1002/cbf.3172] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/25/2016] [Accepted: 01/26/2016] [Indexed: 11/07/2022]
Abstract
Glioblastoma is the most malignant of brain tumours and is difficult to cure because of interruption of drug delivery by the blood-brain barrier system, its high metastatic capacity and the existence of cancer stem cells (CSCs). Although CSCs are present as a small population in malignant tumours, CSCs have been studied as they are responsible for causing recurrence, metastasis and resistance to chemotherapy and radiotherapy for cancer. CSCs have self-renewal characteristics like normal stem cells. The aim of this study was to investigate whether receptor tyrosine kinase-like orphan receptor 1 (ROR1) is involved in stem cell maintenance and malignant properties in human glioblastoma. Knockdown of ROR1 caused reduction of stemness and sphere formation capacity. Moreover, down-regulation of ROR1 suppressed the expression of epithelial-mesenchymal transition-related genes and the tumour migratory and invasive abilities. The results of this study indicate that targeting ROR1 can induce differentiation of CSCs and inhibit metastasis in glioblastoma. In addition, ROR1 may be used as a potential marker for glioblastoma stem cells as well as a potential target for glioblastoma stem cell therapy.
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Affiliation(s)
- Eun-Hwa Jung
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Han-Na Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Gi-Yeon Han
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Min-Jung Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.,Ministry of Food and Drug Safety, Chungcheongbuk-do, Korea
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Abstract
[This retracts the article DOI: 10.3349/ymj.2014.55.4.1152.].
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Affiliation(s)
- In-Soo Jung
- College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Hyun-Jung Kim
- College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Won-Yong Jung
- College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Chan-Wha Kim
- College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Joo JK, Jeong JE, Kim SC, Kim CW, Ko GR, Lee KS. Comparison of mechanical artificial shrinkage methods in mouse blastocyst vitrification. CLIN EXP OBSTET GYN 2016; 43:93-97. [PMID: 27048025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE OF INVESTIGATION This study was designed to determine which mechanical artificial shrinkage (AS) method, conducted by puncture, pipetting, or aspiration, was effective in increasing the re-expansion rate of mouse blastocysts. MATERIALS AND METHODS In each group, 30 mouse blastocysts were used. Before vitrification, the blastocoelic cavity was collapsed by puncture with a micro-needle, pipetting with a micro-glass pipette, and direct aspiration with an ICSI pipette. After thawing, the re-expansion rate of blastocysts was examined for each AS method. Re-expansion rate was checked at three, five, and seven hours after thawing. RESULTS The number of re-expanded mouse blastocysts at five hours after thawing was 12 in the puncture with a micro-needle group, 11 in the pipetting with a micro-glass pipette group, and 24 in the direct aspiration with an ICSI pipette group. The cumulative number of re-expanded mouse blastocysts at seven hours after thawing was 20 in the puncture with a micro-needle group, 20 in the pipetting with a micro-glass pipette group, and 28 in the direct aspiration with an ICSI pipette group. There were statistically significant differences in the cumulative number of re-expanded mouse blastocysts between five and seven hours after thawing (p = 0.001 and 0.021, respectively). CONCLUSIONS Direct aspiration with an ICSI pipette resulted in a higher re-expansion rate than the puncture and pipetting methods. It can be considered that the direct aspiration method is more convenient and simpler than the other two methods.
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Lee HN, Bernardo R, Han GY, Kim GY, Kim JS, Jung WY, Kim KN, Kim JC, Kim CW. Human Amniotic Membrane Extracts have Anti-Inflammatory Effects on Damaged Human Corneal Epithelial Cells In Vitro. J HARD TISSUE BIOL 2016. [DOI: 10.2485/jhtb.25.282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Han-Na Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
| | - Raymundo Bernardo
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
| | - Gi-Yeon Han
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
| | - Gyu-Young Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
| | - Ji-Soo Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
| | - Won-Yong Jung
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
| | | | - Jae-Chan Kim
- Department of Ophthalmology, Chung-Ang University Hospital
| | - Chan-Wha Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University
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Kim CW, Kim HY. Letter: association between moderate alcohol consumption and non-alcoholic fatty liver disease. Aliment Pharmacol Ther 2015; 42:1330-1. [PMID: 26510544 DOI: 10.1111/apt.13417] [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: 12/08/2022]
Affiliation(s)
- C W Kim
- Division of Hepatology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, Republic of Korea
| | - H Y Kim
- Division of Hepatology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, Republic of Korea.
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Song YG, Byun JH, Hwang SY, Kim CW, Shim SG. Use of vertebral body units to locate the cavoatrial junction for optimum central venous catheter tip positioning. Br J Anaesth 2015; 115:252-7. [PMID: 26170349 DOI: 10.1093/bja/aev218] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Central venous catheter (CVC) placement plays an important role in clinical practice; however, optimal positioning of the CVC tip remains a controversial issue. The objective of this study was to evaluate the use of vertebral body unit (VBUs), to locate the cavoatrial junction (CAJ), for optimal CVC tip placement based on chest radiography (CXR) using the carina as a landmark. METHODS 524 patients who underwent coronary computed tomographic angiography (CTA) and CXR were included. The position of the CAJ was identified using VBUs, and the efficacy of VBUs for locating the CAJ with the carina as a landmark was analysed using multiple regression analysis. A VBU was defined as the distance between two adjacent vertebral bodies, including the inter-vertebral disk space. RESULTS The mean (sd) distance from the carina to the superior CAJ was 54.3 (9.7) mm on CTA; the mean distance in VBUs at the level of the carina was 21.4 (1.7) mm on CTA and 22.6 (2.1) mm on CXR. The mean CAJ position was 2.5 VBUs below the carina on CTA and 2.4 VBUs below on CXR with 95% limits of agreement between -0.6 and +0.3. CONCLUSIONS The position of the CVC tip in relation to the carina can be described using the thoracic spine as an internal ruler, and the position of the CAJ in adults was reliably estimated to be 2.4 VBUs below the carina. CLINICAL TRIAL REGISTRATION KCT0001319.
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Affiliation(s)
- Y G Song
- Department of Radiology, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - J H Byun
- Department of Thoracic and Cardiovascular Surgery, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - S Y Hwang
- Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - C W Kim
- Department of Obstetrics and Gynecology, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
| | - S G Shim
- Department of Internal Medicine, Samsung Changwon Hospital, Sungkyunkwan University, School of Medicine, Changwon, South Korea
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Kim HJ, Kim JH, Song YJ, Seo YK, Park JK, Kim CW. Overexpressed Calponin3 by Subsonic Vibration Induces Neural Differentiation of hUC-MSCs by Regulating the Ionotropic Glutamate Receptor. Appl Biochem Biotechnol 2015; 177:48-62. [PMID: 26175098 DOI: 10.1007/s12010-015-1726-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 03/16/2015] [Accepted: 06/22/2015] [Indexed: 10/23/2022]
Abstract
In this study, we used proteomics to investigate the effects of sonic vibration (SV) on mesenchymal stem cells derived from human umbilical cords (hUC-MSCs) during neural differentiation to understand how SV enhances neural differentiation of hUC-MSCs. We investigated the levels of gene and protein related to neural differentiation after 3 or 5 days in a group treated with 40-Hz SV. In addition, protein expression patterns were compared between the control and the 40-Hz SV-treated hUC-MSC groups via a proteomic approach. Among these proteins, calponin3 (CNN3) was confirmed to have 299 % higher expression in the 40-Hz SV stimulated hUC-MSCs group than that in the control by Western blotting. Notably, overexpression of CNN3-GFP in Chinese hamster ovary (CHO)-K1 cells had positive effects on the stability and reorganization of F-actin compared with that in GFP-transfected cells. Moreover, CNN3 changed the morphology of the cells by making a neurite-like form. After being subjected to SV, messenger RNA (mRNA) levels of glutamate receptors such as PSD95, GluR1, and NR1 as well as intracellular calcium levels were upregulated. These results suggest that the activity of glutamate receptors increased because of CNN3 characteristics. Taken together, these results demonstrate that overexpressed CNN3 during SV increases expression of glutamate receptors and promotes functional neural differentiation of hUC-MSCs.
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Affiliation(s)
- Hyun-Jung Kim
- College of Life of Life Sciences and Biotechnology, Korea University, 1-5, Anam Dong, Seongbuk-Gu, Seoul, 136-701, Korea
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Yoon YS, Kim J, Hong SM, Lee JL, Kim CW, Park IJ, Lim SB, Yu CS, Kim JC. Clinical implications of mucinous components correlated with microsatellite instability in patients with colorectal cancer. Colorectal Dis 2015; 17:O161-7. [PMID: 26095997 DOI: 10.1111/codi.13027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 04/03/2015] [Accepted: 05/11/2015] [Indexed: 12/13/2022]
Abstract
AIM Colorectal cancer (CRC) with microsatellite instability (MSI) is characterized by frequent poor differentiation or mucinous histology. The purpose of this study was to evaluate the association of MSI with clinicopathological features and the oncological outcome in patients with a mucinous component. METHOD CRC tissue samples were analysed for histology and MSI. Patients were grouped according to the mucinous content of the tumour, as follows: > 50%, mucinous adenocarcinoma (MA); ≤ 50%, adenocarcinoma with mucinous component (AMC); none, nonmucinous adenocarcinoma (NMA). Clinicopathological parameters and survival were compared between patient groups. RESULTS Of 2025 patients, 84 (4%) had MA and 124 (6%) had AMC. In addition, 202 (10%) had MSI. Patients with MA and AMC tended to have a younger age of onset, right-colon predilection, large-sized tumour and high frequency of MSI compared with those with NMA (P < 0.001). MA and AMC patients with MSI showed a trend towards right-colon predilection and infrequent lymph-node metastasis compared with those with microsatellite stability (MSS; P = 0.005-0.03). There were no survival differences between the three groups, but patients with MSI-MA demonstrated lower 4-year recurrence and better overall survival rates than those with MSS-MA (P = 0.018 and P = 0.046, respectively). CONCLUSION Clinicopathological features of AMC and MA were similar and closely associated with MSI status. Although the prognoses of AMC and MA were no different from that of NMA, survival of patients with an MSI-MA tumour was significantly better than for those with MSS-MA tumours.
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Affiliation(s)
- Y S Yoon
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J Kim
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - S-M Hong
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J L Lee
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - C W Kim
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - I J Park
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - S-B Lim
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - C S Yu
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J C Kim
- Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Jiang YY, Park JK, Yoon HH, Choi H, Kim CW, Seo YK. Enhancing proliferation and ECM expression of human ACL fibroblasts by sonic vibration. Prep Biochem Biotechnol 2015; 45:476-90. [PMID: 24842289 DOI: 10.1080/10826068.2014.923444] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Effects of mechanical vibration on cell activity and behavior remain controversial: There has been evidence on both positive and negative effects. Furthermore, research on the anterior cruciate ligament (ACL) has as yet been limited and the frequency-related effects remain unknown, even though ACL injury is common and an injured ACL hardly spontaneously recovers. The object of this work was to address the influence of mechanical vibration on ACL fibroblasts, to determine the effects of frequencies, and to further study this effect at the cellular level. We found that sonic vibration affected ACL fibroblasts' proliferation and metabolism in a frequency-dependent manner, and 20 Hz gave rise to the most ACL cell activity and comprehensively increased extracellular matrix (ECM) contents, including collagen type I, collagen type III, fibronectin, elastin, tenascin, glycosaminoglycan (GAG), and the cytoskeleton protein vimentin. Thus, our results indicate that sonic vibration possesses frequency-dependent effects on proliferation and productivity of ACL fibroblast with an optimal frequency of 20 Hz under the present stimulation conditions, providing further information for future research in how vibrational stimulation manipulates ACL cellular behavior.
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Affiliation(s)
- Yuan-Yuan Jiang
- a Department of Medical Biotechnology , Dongguk University , Seoul , Korea
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