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Adhikari G, Carlin N, Choi JJ, Choi S, Ezeribe AC, França LE, Ha C, Hahn IS, Hollick SJ, Jeon EJ, Jo JH, Joo HW, Kang WG, Kauer M, Kim BH, Kim HJ, Kim J, Kim KW, Kim SH, Kim SK, Kim WK, Kim YD, Kim YH, Ko YJ, Lee DH, Lee EK, Lee H, Lee HS, Lee HY, Lee IS, Lee J, Lee JY, Lee MH, Lee SH, Lee SM, Lee YJ, Leonard DS, Luan NT, Manzato BB, Maruyama RH, Neal RJ, Nikkel JA, Olsen SL, Park BJ, Park HK, Park HS, Park KS, Park SD, Pitta RLC, Prihtiadi H, Ra SJ, Rott C, Shin KA, Cavalcante DFFS, Scarff A, Spooner NJC, Thompson WG, Yang L, Yu GH. Search for Boosted Dark Matter in COSINE-100. Phys Rev Lett 2023; 131:201802. [PMID: 38039466 DOI: 10.1103/physrevlett.131.201802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 10/30/2023] [Indexed: 12/03/2023]
Abstract
We search for energetic electron recoil signals induced by boosted dark matter (BDM) from the galactic center using the COSINE-100 array of NaI(Tl) crystal detectors at the Yangyang Underground Laboratory. The signal would be an excess of events with energies above 4 MeV over the well-understood background. Because no excess of events are observed in a 97.7 kg·yr exposure, we set limits on BDM interactions under a variety of hypotheses. Notably, we explored the dark photon parameter space, leading to competitive limits compared to direct dark photon search experiments, particularly for dark photon masses below 4 MeV and considering the invisible decay mode. Furthermore, by comparing our results with a previous BDM search conducted by the Super-Kamionkande experiment, we found that the COSINE-100 detector has advantages in searching for low-mass dark matter. This analysis demonstrates the potential of the COSINE-100 detector to search for MeV electron recoil signals produced by the dark sector particle interactions.
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Affiliation(s)
- G Adhikari
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - N Carlin
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - J J Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - A C Ezeribe
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - L E França
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - C Ha
- Department of Physics, Chung-Ang University, Seoul 06973, Republic of Korea
| | - I S Hahn
- Department of Science Education, Ewha Womans University, Seoul 03760, Republic of Korea
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - S J Hollick
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - E J Jeon
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J H Jo
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - H W Joo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - W G Kang
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - M Kauer
- Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - B H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - H J Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - J Kim
- Department of Physics, Chung-Ang University, Seoul 06973, Republic of Korea
| | - K W Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S K Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - W K Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Y D Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Department of Physics, Sejong University, Seoul 05006, Republic of Korea
| | - Y H Kim
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Y J Ko
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - D H Lee
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - E K Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H S Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H Y Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - I S Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - J Y Lee
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - M H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - S H Lee
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - S M Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Y J Lee
- Department of Physics, Chung-Ang University, Seoul 06973, Republic of Korea
| | - D S Leonard
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - N T Luan
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - B B Manzato
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - R H Maruyama
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - R J Neal
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - J A Nikkel
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - S L Olsen
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - B J Park
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - H K Park
- Department of Accelerator Science, Korea University, Sejong 30019, Republic of Korea
| | - H S Park
- Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - K S Park
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S D Park
- Department of Physics, Kyungpook National University, Daegu 41566, Republic of Korea
| | - R L C Pitta
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - H Prihtiadi
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - S J Ra
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112, USA
| | - K A Shin
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - D F F S Cavalcante
- Physics Institute, University of São Paulo, 05508-090, São Paulo, Brazil
| | - A Scarff
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - N J C Spooner
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - W G Thompson
- Department of Physics and Wright Laboratory, Yale University, New Haven, Connecticut 06520, USA
| | - L Yang
- Department of Physics, University of California San Diego, La Jolla, California 92093, USA
| | - G H Yu
- Center for Underground Physics, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
- Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Kwon NY, Lee HY, Hwang SI, Sung SH, Cho SJ, Yoon YJ, Park JK. Herbal Medicine for Postpartum Pain: A Systematic Review of Puerperal Wind Syndrome (Sanhupung). Healthcare (Basel) 2023; 11:2743. [PMID: 37893817 PMCID: PMC10606538 DOI: 10.3390/healthcare11202743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/27/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Mothers in the postpartum period often experience musculoskeletal disorders and pain, impacting their ability to care for themselves and their infants. Conventional treatments have limitations, prompting interest in alternative options like herbal medicine. This systematic review aimed to confirm the effectiveness and safety of herbal medicine treatment to improve maternal health in patients with postpartum pain (puerperal wind syndrome). We searched eight electronic databases for randomized controlled trials (RCTs) to evaluate the effects of herbal medicines on puerperal wind syndrome. Nine RCTs, including 652 patients, were selected. Following a meta-analysis of RCTs, both herbal medicine and combination treatments improved the visual analog scale scores, total effective rate, scores of Traditional Chinese Medicine syndromes, Oswestry Disability Index, and quality of life in patients with role-emotional puerperal wind syndrome. All adverse events were minor, and the incidence rate was not high compared with that of the control group. In conclusion, herbal medicine supports the improvement in pain, other systemic symptoms, and the quality of life of patients with puerperal wind syndrome. Moreover, no serious side effects were observed; therefore, herbal medicines appear to be safe. It can be the preferred treatment option for puerperal wind syndrome, which is currently managed symptomatically.
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Affiliation(s)
- Na-Yoen Kwon
- Department of Obstetrics and Gynecology, College of Korean Medicine, Ga-Chon University, Seongnam-si 13120, Republic of Korea;
| | - Hee-Yoon Lee
- Department of Korean Medicine Obstetrics and Gynecology, Pusan National University Korean Medicine Hospital, Yangsan-si 50612, Republic of Korea; (H.-Y.L.); (Y.-J.Y.)
- Department of Korean Medicine Obstetrics and Gynecology, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea;
| | - Su-In Hwang
- Department of Korean Medicine Obstetrics and Gynecology, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea;
| | - Soo-Hyun Sung
- Department of Policy Development, National Institute of Korean Medicine Development, Seoul 04554, Republic of Korea;
| | - Su-Jin Cho
- Research Institute of Nursing Science, Pusan National University, Yangsan-si 50612, Republic of Korea;
| | - Young-Jin Yoon
- Department of Korean Medicine Obstetrics and Gynecology, Pusan National University Korean Medicine Hospital, Yangsan-si 50612, Republic of Korea; (H.-Y.L.); (Y.-J.Y.)
- Department of Korean Medicine Obstetrics and Gynecology, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea;
| | - Jang-Kyung Park
- Department of Korean Medicine Obstetrics and Gynecology, Pusan National University Korean Medicine Hospital, Yangsan-si 50612, Republic of Korea; (H.-Y.L.); (Y.-J.Y.)
- Department of Korean Medicine Obstetrics and Gynecology, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea;
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Eo TS, Lee HY, Cho HJ, Yoon JH, Rha MS, Kim CH. Clinical characteristics and associated factors of qualitative olfactory dysfunction. Rhinology 2023; 61:432-440. [PMID: 37243721 DOI: 10.4193/rhin23.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND Although interest in qualitative olfactory dysfunction (OD), including parosmia and phantosmia, has been increasing since the COVID-19 pandemic, little is known about the clinical characteristics and associated factors of qualitative OD. METHODS Adult patients with subjective smell disturbance who underwent both the olfactory questionnaire and psychophysical olfactory function test were retrospectively enrolled. Demographic and clinical characteristics were analysed according to the presence or absence of parosmia or phantosmia. RESULTS Among a total of 753 patients with self-reported OD, 60 (8%) and 167 (22.2%) patients reported parosmia and phantosmia, respectively. Younger age and female sex were related to both parosmia and phantosmia. The frequency of parosmia was significantly higher in patients with post-viral OD (17.9%) than in patients with the sinonasal disease (5.5%), whereas that of phantosmia was not different according to aetiologies of OD. Patients with COVID-19 had significantly younger ages and higher TDI scores than those with other viral infections. Remarkably, patients with parosmia or phantosmia had significantly higher TDI scores than those without but experienced more disruption in daily life. In the multivariate analysis, younger age and higher TDI score were identified as independent factors associated with both parosmia and phantosmia, while the viral infection was associated with parosmia but not with phantosmia. CONCLUSIONS Patients with OD who have parosmia or phantosmia have higher odour sensitivity than those who do not, but experience more deterioration in the quality of life. Viral infection is a risk factor for parosmia but not for phantosmia.
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Affiliation(s)
- T-S Eo
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H Y Lee
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H-J Cho
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea; The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J-H Yoon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea; The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; The Korea Mouse Sensory Phenotyping Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M-S Rha
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - C-H Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea; The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; The Korea Mouse Sensory Phenotyping Center, Yonsei University College of Medicine, Seoul, Republic of Korea;Taste Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
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Choi Y, Nam YH, Jeong S, Lee HY, Choi SY, Park S, Jung SC. Biochemical and functional characterization of skeletal muscle cells differentiated from tonsil-derived mesenchymal stem cells. Muscle Nerve 2023. [PMID: 37243484 DOI: 10.1002/mus.27847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023]
Abstract
INTRODUCTION/AIMS Human tonsils are a readily accessible source of stem cells for the potential treatment of skeletal muscle disorders. We reported previously that tonsil-derived mesenchymal stem cells (TMSCs) can differentiate into skeletal muscle cells (SKMCs), which renders TMSCs promising candidates for cell therapy for skeletal muscle disorders. However, the functional properties of the myocytes differentiated from mesenchymal stem cells have not been clearly evaluated. In this study we investigated whether myocytes differentiated from TMSCs (skeletal muscle cells derived from tonsil mesenchymal stem cells [TMSC-SKMCs]) exhibit the functional characteristics of SKMCs. METHODS To test the insulin reactivity of TMSC-SKMCs, the expression of glucose transporter 4 (GLUT4) and phosphatidylinositol 3-kinase/Akt was analyzed after the cells were treated for 30 minutes with 100 nmol/L insulin in normal or high-glucose medium. We also examined whether these cells formed a neuromuscular junction (NMJ) when cocultured with motor neurons, and whether they were stimulated by electrical signals using whole-cell patch clamping. RESULTS Skeletal muscle cells derived from tonsil mesenchymal stem cells expressed SKMC markers, such as MYOD, MYH3, MYH8, TNNI1, and TTN, at high levels, and exhibited a multinucleated cell morphology and a myotube-like shape. The expression of the acetylcholine receptor and GLUT4 was confirmed in TMSC-SKMCs. In addition, these cells exhibited insulin-mediated glucose uptake, NMJ formation, and transient changes in cell membrane action potential, all of which are representative functions of human SKMCs. DISCUSSION Tonsil-derived mesenchymal stem cells can be functionally differentiated into SKMCs and may have potential for clinical application for the treatment of skeletal muscle disorders.
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Affiliation(s)
- Yeonzi Choi
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Yu Hwa Nam
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Soyeon Jeong
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hee-Yoon Lee
- Department of Physiology and Neuroscience, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Se-Young Choi
- Department of Physiology and Neuroscience, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Saeyoung Park
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Sung-Chul Jung
- Department of Biochemistry, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
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Chang E, Im D, Lee HY, Lee M, Lee CM, Kang CK, Park WB, Kim NJ, Choe PG, Oh M. Impact of discontinuing isolation in a private room for patients infected or colonized with vancomycin-resistant enterococci (VRE) on the incidence of healthcare-associated VRE bacteraemia in a hospital with a predominantly shared-room setting. J Hosp Infect 2023; 132:1-7. [PMID: 36473555 DOI: 10.1016/j.jhin.2022.11.017] [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: 09/09/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Isolating patients infected or colonized with vancomycin-resistant enterococci (VRE) in a private room or cohort room to prevent hospital transmission is controversial. AIM To evaluate the effect of a relaxed isolation policy for VRE-infected or colonized patients on healthcare-associated (HA) VRE bacteraemia in an acute care hospital with a predominantly shared-room setting. METHODS The incidence of HA VRE bacteraemia was compared during a private isolation era (October 2014-September 2017), a cohort isolation era (October 2017-June 2020), and a no isolation era (July 2020-June 2022). Using Poisson regression modelling, an interrupted time-series analysis was conducted to analyse level changes and trends in incidences of HA VRE bacteraemia for each era. FINDINGS The proportion of VRE-infected or -colonized patients staying in shared rooms increased from 18.3% in the private isolation era to 82.6% in the no isolation era (P < 0.001). There was no significant difference in the incidences of HA VRE bacteraemia between the private isolation era and the cohort isolation era (relative risk: 1.01; 95% confidence interval: 0.52-1.98; P = 0.977) or between the cohort isolation era and the no isolation era (0.99; 0.77-1.26; P = 0.903). In addition, there was no significant slope increase in the incidence of HA VRE bacteraemia between any of the eras. CONCLUSION In a hospital with predominantly shared rooms, the relaxation of isolation policy did not result in increased HA VRE bacteraemia, when other infection control measures were maintained.
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Affiliation(s)
- E Chang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D Im
- Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - H Y Lee
- Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - M Lee
- Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - C M Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - C K Kang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea.
| | - M Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
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Kim J, Lee S, Han S, Lee HY. Divergent synthesis of conidiogenones B–F and 12β-hydroxyconidiogenone C. Chem 2023. [DOI: 10.1016/j.chempr.2023.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Suria MM, Yap PC, Lov VL, AbuBakar S, Lee HY. Lactic acid bacteria waste infusion as a source of attraction and oviposition stimulation of gravid female Aedes albopictus mosquitoes. Trop Biomed 2022; 39:499-503. [PMID: 36602207 DOI: 10.47665/tb.39.4.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Aedes albopictus poses a public health risk in tropical countries and temperate countries in recent decades due to its capability to transmit various human arboviruses including dengue, yellow fever, and chikungunya. Vector control is the key for preventing transmission of these pathogenic viruses. Improving the effectiveness of currently utilized collection methods, such as ovitraps, is important for best species abundance monitoring, assessment of the threat of arbovirus transmission, and optimizing control activities. Therefore, this study aimed to assess the potential use of lactic acid bacteria (LAB) waste as an infusion-baited ovitrap for Aedes collection. The performance of overnight tap water, grass hay infusion and LAB waste infusion were compared for their ability in attracting gravid female Ae. albopictus. In this study, the LAB waste infusion was substantially more alluring to Ae. albopictus mosquitoes than the two controls grass hay infusion and tap water.
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Affiliation(s)
- M M Suria
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Higher Institution Centre of Excellence, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - P C Yap
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Higher Institution Centre of Excellence, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - V L Lov
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Higher Institution Centre of Excellence, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - S AbuBakar
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Higher Institution Centre of Excellence, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - H Y Lee
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Higher Institution Centre of Excellence, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
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Lee J, Joung S, Lee HY. Collective Syntheses of Eight Phorbaketals via Total Synthesis of Phorbaketal A. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jaeyeon Lee
- Korea Advanced Institute of Science and Technology Chemistry 34141 Daejeon KOREA, REPUBLIC OF
| | - Seewon Joung
- Inha University Chemistry 100 Inha-ro, Michuhol-gu 22212 Incheon KOREA, REPUBLIC OF
| | - Hee-Yoon Lee
- Korea Advanced Institute of Science and Technology Chemistry 34141 Daejeon KOREA, REPUBLIC OF
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Kim BG, Yuk JS, Kim GS, Seo JK, Jin MN, Lee HY, Seo YS, Kim MH, Yang SW, Yoon SH, Byun YS, Kim BO. Effect of early hysterectomy on a risk of incident cardiovascular disease in women: a nationwide population-based cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
Women who inevitably underwent surgical hysterectomy before natural menopause may have an earlier increase in hematocrit and storage iron than women who continue menstruation, thereby increasing the risk of cardiovascular disease (CVD) early. We aimed to evaluate the association of women with hysterectomy vs. without hysterectomy before their 50s with the risk of incident CVD.
Methods
This was a retrospective-cohort study, 135,575 women aged 40 to 50 years in 2011–2014 were extracted from the Korean Health Insurance Review and Assessment Service data and after propensity score matching, 55,539 pairs were included in hysterectomy and non-hysterectomy group respectively. The primary endpoint was major adverse cardiac and cerebrovascular events (MACCE), a composite of cardiovascular death, myocardial infarction (MI), stroke, and coronary artery revascularization.
Results
After adjustment for confounding factors, hysterectomy group had an increased risk of MACCE compared with non-hysterectomy group (hazard ratio [HR], 1.25; 95% confidence interval [CI], 1.09–1.44). Regarding individual outcomes, cardiovascular death, MI, and coronary revascularization were comparable between the groups, whereas, the risk of stroke was significantly higher in hysterectomy group than non-hysterectomy group (HR, 1.31; 95% CI, 1.12–1.53). Even after excluding women who underwent oophorectomy, hysterectomy group had a higher risk of MACCE than non-hysterectomy group (HR, 1.24; 95% CI 1.06–1.44).
Conclusions
Early surgical menopause due to hysterectomy, not hormonal menopause, was associated with an increased risk for a composite of CVD, especially stroke. This suggest that the role of “uterus” as well as sex hormones may be important for the sharp increase in the risk of CVD in women after menopause.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- B G Kim
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J S Yuk
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - G S Kim
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J K Seo
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - M N Jin
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - H Y Lee
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - Y S Seo
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - M H Kim
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - S W Yang
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - S H Yoon
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - Y S Byun
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - B O Kim
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
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10
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Jee DW, Myung J, Little RD, Han S, Lee HY. Alkylidene Carbene from Silyl Vinyl Iodide Provides Mechanistic Insights on Trimethylenemethane Diyl-Mediated Tandem Cyclizations. Org Lett 2022; 24:4399-4403. [PMID: 35699378 DOI: 10.1021/acs.orglett.2c01622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe a method to generate alkylidene carbenes via tetramethylammonium-fluoride-induced desilylation of silyl vinyl iodides. The reversible carbene generation from an iodovinyl anion enabled us to unearth mechanistic aspects of the trimethylenemethane (TMM) diyl cyclization reaction that could not be explored via previous methods. We observed that a slow diyl-diylophile cycloaddition can induce the reversible formation of an alkylidene carbene from the TMM diyl intermediate via a retro-cyclopropanation at ambient temperature.
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Affiliation(s)
- Dong Whan Jee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Jinnie Myung
- Department of Chemistry and Biochemistry, University of California, Santa Barbara (UCSB), Santa Barbara, California 93106, United States
| | - R Daniel Little
- Department of Chemistry and Biochemistry, University of California, Santa Barbara (UCSB), Santa Barbara, California 93106, United States
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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11
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Jeon H, Kang G, Kim MJ, Shin JS, Han S, Lee HY. On the Erosion of Enantiopurity of Rhodonoids via Their Asymmetric Total Synthesis. Org Lett 2022; 24:2181-2185. [PMID: 35266724 DOI: 10.1021/acs.orglett.2c00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rhodonoid natural products are found in nature as a scalemic mixture. This interesting phytochemical feature is presumed to originate from a reversible electrocyclic ring opening of the chromene core present in the biogenetic precursors of rhodonoids. Herein, we systematically investigated factors that are responsible for this racemization event. This eventually led us to complete the asymmetric total synthesis of rhodonoids A, C, D, and G.
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Affiliation(s)
- Hyeju Jeon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Myungjo J Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ji Soo Shin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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12
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Shin JS, Lee J, Han S, Lee HY. Gold-catalyzed alkyne-diol bicycloketalization enables enantioselective divergent total syntheses of attenols. Org Chem Front 2022. [DOI: 10.1039/d2qo01262f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-catalyzed bicycloketalization of alkyne-diols provides synthetic advantages when compared to that of keto-diols under acidic conditions.
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Affiliation(s)
- Ji Soo Shin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jaeyeon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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13
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Park YM, Noh EM, Lee HY, Shin DY, Lee YH, Kang YG, Na EJ, Kim JH, Yang HJ, Kim MJ, Kim KS, Bae JS, Lee YR. Anti-diabetic effects of Protaetia brevitarsis in pancreatic islets and a murine diabetic model. Eur Rev Med Pharmacol Sci 2021; 25:7508-7515. [PMID: 34919253 DOI: 10.26355/eurrev_202112_27450] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In this study, the antidiabetic efficacy of Protaetia brevitarsis in alloxan-treated pancreatic islets and db/db mice was investigated. P. brevitarsis was tested for alloxan-mediated cytotoxicity and nitric oxide production in mice pancreatic islets. MATERIALS AND METHODS The anti-diabetic effect of P. brevitarsis was also evaluated in db/db mice after 4 weeks of administration. Biochemical analysis, oral glucose tolerance test (OGTT), and pancreatic histological analysis were performed. RESULTS P. brevitarsis displayed hypoglycemic activity in alloxan-treated mice pancreatic islets. Our results showed that P. brevitarsis protects pancreatic islets from cytotoxicity. Moreover, daily oral supplementation with P. brevitarsis for 4 weeks reduced plasma glucose levels without affecting body weight and food intake, elevated glucose tolerance in OGTT, improved blood lipid parameters, inhibited fat accumulation, and restored islet structure of db/db mice. CONCLUSIONS The present study provided evidence for the anti‑diabetic effect of P. brevitarsis in alloxan-treated pancreatic islets and db/db mice. These results suggest that P. brevitarsis may be used as an adjunctive anti-diabetic agent or as a functional food.
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Affiliation(s)
- Y M Park
- INVIVO Co. Ltd., Iksan, Jeonbuk, Korea.
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14
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Jung J, Choe PG, Choi S, Kim E, Lee HY, Kang CK, Lee J, Park WB, Lee S, Kim NJ, Choi EH, Oh M. Reduction in the acquisition rate of carbapenem-resistant Acinetobacter baumannii (CRAB) after room privatization in an intensive care unit. J Hosp Infect 2021; 121:14-21. [PMID: 34929231 DOI: 10.1016/j.jhin.2021.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/08/2021] [Accepted: 12/12/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Acinetobacter baumannii is one of the major pathogens responsible for healthcare-associated infections, especially in intensive care units (ICUs). AIM To evaluate the effect of room privatization in an ICU on the acquisition of carbapenem-resistant A. baumannii (CRAB). METHODS Between March and August 2017, a medical ICU was renovated from a multibed bay room to single rooms. Acquisition of CRAB was compared between patients admitted to the ICU over 18 months pre-renovation (September 2015 to February 2017) and post-renovation (September 2017 to February 2019). A Cox proportional hazard model was used with adjustment for demographics and comorbidities. FINDINGS Of the 901 patients, who contributed 8,276 patient-days, 95 (10.5%) acquired CRAB during their ICU stay. The CRAB acquisition rate was significantly higher during the pre-renovation period (1.87 per 100 patient-days) than during the post-renovation period (0.39 per 100 patient-days) (P < 0.001). In the multivariable Cox regression model, CRAB acquisition was significantly associated with the presence of a feeding tube (adjusted hazard ratio [aHR], 6.08; 95% confidence interval [CI], 2.46-15.06; P < 0.001), continuous renal replacement therapy (aHR, 1.66; 95% CI, 1.09-2.53; P = 0.019) and admission after renovation of the ICU to single rooms (aHR, 0.23; 95% CI, 0.12-0.41; P < 0.001). CONCLUSIONS Renovation of ICUs to single rooms is an efficient strategy to prevent transmission of multidrug-resistant organisms and hospital-acquired infections.
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Affiliation(s)
- J Jung
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea.
| | - S Choi
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - E Kim
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - H Y Lee
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - C K Kang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - J Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - S Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - E H Choi
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea; Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - M Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
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15
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Kim R, Kwon K, Lee HY. A Free Radical Cyclization Catalyzed by Ruthenium Hydride Species. Chem Asian J 2021; 16:3909-3913. [PMID: 34637182 DOI: 10.1002/asia.202101023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/11/2021] [Indexed: 11/10/2022]
Abstract
A photolytically generated ruthenium hydride species catalyzing a free radical cyclization reaction was developed. As the new methodology ensures reproducibility of the free radical reaction of trialkyltin hydrides and a fast hydrogen transfer to the radical intermediates, the methodology provides fast quenching of radical intermediates and thus suppresses rearrangement of radical intermediates before the hydride quench. By offering new reactivity and selectivity to the trialkyltin hydride mediated free radical cyclization reactions, the methodology will find wide range of applications in organic synthesis.
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Affiliation(s)
- Rira Kim
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), 134141, 291 Daehak Ro, Yuseong, Daejeon, Korea
| | - Kuktae Kwon
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), 134141, 291 Daehak Ro, Yuseong, Daejeon, Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), 134141, 291 Daehak Ro, Yuseong, Daejeon, Korea
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16
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Khoo HY, Lee HY, Khor CS, Tan KK, AbuBakar S. Evaluation of commercial serological assays in Malaysia for detection of anti-Zika virus antibodies. Trop Biomed 2021; 38:613-621. [PMID: 35001928 DOI: 10.47665/tb.38.4.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The recommended test guidelines for Zika virus (ZIKV) include using both molecular and serological tools. While the molecular tools are useful for detecting acute infection, the serological tools are useful for the detection of previous infections. Nevertheless, detection of ZIKV-specific antibodies remains a challenge due to the high cross-reactivity between ZIKV and other flaviviruses such as dengue virus (DENV) and Japanese encephalitis virus (JEV). The objective of this study is to evaluate the commercially available enzyme-linked immunosorbent assay (ELISA) for the detection of ZIKV IgG. In this study, we evaluated 6 commercially available anti-ZIKV IgG ELISA kits. Pre-characterized serum panels consisting of 70 sera were selected for the evaluation. The diagnostic accuracy of each ELISA kits was determined and compared to the gold standard, Foci Reduction Neutralization Test (FRNT). The present study established that the performance of the NS1-based anti-ZIKV IgG ELISA kit was superior to that which uses of the E protein as antigen. Overall, commercial ZIKV IgG ELISA showed varying test performances, with some achieving moderate to high test sensitivities and specificities. When compared against the FRNT, the test sensitivities ranged from 7.1% to 78.6%, whereas, the test specificities ranged from 40.0% to 100%. Limitation to the study includes the cross reactivity between flavivirus and specificity of the kit in addressing the cross reactivity.
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Affiliation(s)
- H Y Khoo
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Higher Institution Centre of Excellence (HICoE), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - H Y Lee
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Higher Institution Centre of Excellence (HICoE), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - C S Khor
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Higher Institution Centre of Excellence (HICoE), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - K K Tan
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Higher Institution Centre of Excellence (HICoE), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - S AbuBakar
- Tropical Infectious Diseases Research & Education Centre (TIDREC), Higher Institution Centre of Excellence (HICoE), Universiti Malaya, 50603 Kuala Lumpur, Malaysia.,WHO Collaboration Centre for Arbovirus Reference and Research Malaysia, Universiti Malaya, 50603 Kuala Lumpur, Malaysia (MAA-12 ).,Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
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17
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Lee HY. Bullous pemphigoid: towards personalized care. Br J Dermatol 2021; 185:1093-1094. [PMID: 34585375 DOI: 10.1111/bjd.20753] [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: 08/23/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/30/2022]
Affiliation(s)
- H Y Lee
- Department of Dermatology, Allergy Centre, Singapore General Hospital, Singapore
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18
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Abstract
The first total synthesis of (±)-jujuyane, a cyclooctanoid natural product, was accomplished from a (5 + 3) dimerization product of oxidopyrylium ylide that forms the cyclooctanoid core structure along with inherited stereochemical bias. Selective functional group modifications of the highly oxygenated dimeric structure, followed by the tactical functional group manipulation around the eight-membered carbocyclic core, enabled the total synthesis of (±)-jujuyane, which will serve a guide for future applications of oxidopyrylium dimers to the natural product total synthesis.
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Affiliation(s)
- Sanghyeon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | | | | | - Jiheon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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19
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Kim SI, Lee HY, Jung WC, Song JS. EVALUATION OF INTERNAL EXPOSURE TO RADIOACTIVE AEROSOL GENERATED FROM PLASMA MELTING SYSTEM USING THE BIDAS CODE. Radiat Prot Dosimetry 2021; 194:9-17. [PMID: 33954746 DOI: 10.1093/rpd/ncab061] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 02/23/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
The radioactive aerosol generated by the Nuclear Power Plant (NPP) decommissioning process can be inhaled by workers and deposited inside the human body, resulting in internal exposure. Because internal exposure, unlike external exposure, is difficult to measure directly, it is all the more necessary to assess the dose workers receive as a result of internal exposure. Precise assessment of the internal exposure necessitates actual measurements in the work environment such as the workers' respiration rate, kind of nuclide and amount of captured nuclide. However, in the event of difficulties in securing these measurements, the internal exposure dose can be estimated based upon the recommended values by the ICRP (International Commission on Radiological Protection) such as the intake fraction and particle size. In this study, 5 μm was selected as the particle size as recommended by the ICRP, and both heavy and light respiratory rates were used in the calculation. With respect to the nuclides contained in the radioactive aerosol and their concentrations, the data captured for the aerosol in the melting facility on the Kozloduy NPP premises in Bulgaria were applied to estimate workers' internal exposure. As a result, each worker was found not to have received more than 20 mSv/yr, which is the maximum annual permissible dose for workers.
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Affiliation(s)
- S I Kim
- Department of Nuclear Engineering, Chosun University, Pilmundae-ro 309, Dong-gu, Gwangju KS008, Republic of Korea
| | - H Y Lee
- Department of Nuclear Engineering, Chosun University, Pilmundae-ro 309, Dong-gu, Gwangju KS008, Republic of Korea
| | - W C Jung
- Department of Chemical Engineering, Korea Hydro & Nuclear Power Co., Ltd (KHNP), 103-16, Bulguk-ro, Yangbuk-myeon, Gyeongju-si, Gyeongbuk KSxx010, Republic of Korea
| | - J S Song
- Department of Nuclear Engineering, Chosun University, Pilmundae-ro 309, Dong-gu, Gwangju KS008, Republic of Korea
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20
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Yung WH, Siew CHC, Lee HY, Low HM. A case of xanthogranulomatous appendicitis in the female pelvis. Med J Malaysia 2021; 76:114-117. [PMID: 33510122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Xanthogranulomatous inflammation is an uncommon form of chronic inflammatory process. Only a few isolated case reports of xanthogranulomatous appendicitis (XA) have been published. XA has nonspecific imaging findings and cannot be reliably differentiated on imaging from locally advanced malignancy. XA however follows a benign course and can potentially be treated with surgical resection.
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Affiliation(s)
- W H Yung
- Tan Tock Seng Hospital, Department of Diagnostic Radiology, Singapore
| | - C H C Siew
- Tan Tock Seng Hospital, Department of General Surgery, Singapore
| | - H Y Lee
- Tan Tock Seng Hospital, Department of Diagnostic Pathology, Singapore
| | - H M Low
- Tan Tock Seng Hospital, Department of Diagnostic Radiology, Singapore.
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21
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Loong SK, Lim FS, Khoo JJ, Lee HY, Suntharalingam C, Ishak SN, Mohd-Taib FS, AbuBakar S. Culturable pathogenic bacteria in ticks parasitizing farm animals and rodents in Malaysia. Trop Biomed 2020; 37:803-811. [PMID: 33612793 DOI: 10.47665/tb.37.3.803] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ticks are vectors of bacteria, protozoa and viruses capable of causing serious and life threatening diseases in humans and animals. Disease transmission occurs through the transfer of pathogen from tick bites to susceptible humans or animals. Most commonly known tick-borne pathogens are obligate intracellular microorganisms but little is known on the prevalence of culturable pathogenic bacteria from ticks capable of growth on artificial nutrient media. One hundred and forty seven ticks originating from dairy cattle, goats and rodents were collected from nine selected sites in Peninsular Malaysia. The culture of surfacesterilized tick homogenates revealed the isolation of various pathogenic bacteria including, Staphylococcus sp., Corynebacterium sp., Rothia sp., Enterococcus faecalis, Klebsiella pneumoniae, Escherichia coli and Bacillus sp. and its derived genera. These pathogens are among those that affect humans and animals. Findings from this study suggest that in addition to the regular intracellular pathogens, ticks could also harbor extracellular pathogenic bacteria. Further studies, hence, would be needed to determine if these extracellular pathogens could contribute to human or animal infection.
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Affiliation(s)
- S K Loong
- Tick Cell Biobank Asia Outpost, Tropical Infectious Diseases Research and Education Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - F S Lim
- Tick Cell Biobank Asia Outpost, Tropical Infectious Diseases Research and Education Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - J J Khoo
- Tick Cell Biobank Asia Outpost, Tropical Infectious Diseases Research and Education Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - H Y Lee
- Centre of Excellence for Vaccine and Protein Therapeutics Process Development, Tropical Infectious Diseases Research and Education Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - C Suntharalingam
- Economics and Social Science Research Centre, Malaysian Agricultural Research and Development Institute (MARDI), 43400 Serdang, Malaysia
| | - S N Ishak
- School of Environmental Science and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia
| | - F S Mohd-Taib
- School of Environmental Science and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia
| | - S AbuBakar
- Tick Cell Biobank Asia Outpost, Tropical Infectious Diseases Research and Education Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia.,Centre of Excellence for Vaccine and Protein Therapeutics Process Development, Tropical Infectious Diseases Research and Education Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia.,Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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22
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Kim R, Lee S, Lee J, Lee HY. A Total Synthesis of (±)-Ceratopicanol via Palladium Catalyzed Reductive Cyclization. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rira Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
| | - Sanghyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
| | - Jaeyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Korea
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23
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Kim H, Kim D, Kim J, Lee HY, Park D, Kang H, Matsuda K, Sterky FH, Yuzaki M, Kim JY, Choi SY, Ko J, Um JW. Calsyntenin-3 interacts with both α- and β-neurexins in the regulation of excitatory synaptic innervation in specific Schaffer collateral pathways. J Biol Chem 2020; 295:9244-9262. [PMID: 32434929 PMCID: PMC7335786 DOI: 10.1074/jbc.ra120.013077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/15/2020] [Indexed: 12/13/2022] Open
Abstract
Calsyntenin-3 (Clstn3) is a postsynaptic adhesion molecule that induces presynaptic differentiation via presynaptic neurexins (Nrxns), but whether Nrxns directly bind to Clstn3 has been a matter of debate. Here, using LC-MS/MS-based protein analysis, confocal microscopy, RNAscope assays, and electrophysiological recordings, we show that β-Nrxns directly interact via their LNS domain with Clstn3 and Clstn3 cadherin domains. Expression of splice site 4 (SS4) insert-positive β-Nrxn variants, but not insert-negative variants, reversed the impaired Clstn3 synaptogenic activity observed in Nrxn-deficient neurons. Consistently, Clstn3 selectively formed complexes with SS4-positive Nrxns in vivo Neuron-specific Clstn3 deletion caused significant reductions in number of excitatory synaptic inputs. Moreover, expression of Clstn3 cadherin domains in CA1 neurons of Clstn3 conditional knockout mice rescued structural deficits in excitatory synapses, especially within the stratum radiatum layer. Collectively, our results suggest that Clstn3 links to SS4-positive Nrxns to induce presynaptic differentiation and orchestrate excitatory synapse development in specific hippocampal neural circuits, including Schaffer collateral afferents.
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Affiliation(s)
- Hyeonho Kim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea
| | - Dongwook Kim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea
| | - Jinhu Kim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea
| | - Hee-Yoon Lee
- Department of Neuroscience and Physiology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Dongseok Park
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea
| | - Hyeyeon Kang
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea
| | - Keiko Matsuda
- Department of Physiology, School of Medicine, Keio University, Tokyo, Japan
| | - Fredrik H Sterky
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden; Department of Laboratory Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Michisuke Yuzaki
- Department of Physiology, School of Medicine, Keio University, Tokyo, Japan
| | - Jin Young Kim
- Biomedical Omics Group, Korea Basic Science Institute, Cheongju, Chungbuk, Korea
| | - Se-Young Choi
- Department of Neuroscience and Physiology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Jaewon Ko
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea.
| | - Ji Won Um
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-gun, Daegu, Korea; Core Protein Resources Center, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpoong-Eup, Dalseong-Gun, Daegu, Korea.
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Han KA, Lee HY, Lim D, Shin J, Yoon TH, Liu X, Um JW, Choi SY, Ko J. Receptor protein tyrosine phosphatase delta is not essential for synapse maintenance or transmission at hippocampal synapses. Mol Brain 2020; 13:94. [PMID: 32552840 PMCID: PMC7301452 DOI: 10.1186/s13041-020-00629-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/29/2020] [Indexed: 12/26/2022] Open
Abstract
Members of the leukocyte common antigen-related receptor protein tyrosine phosphatase (LAR-RPTP) family, comprising PTPσ, PTPδ and LAR, are key hubs for presynaptic assembly and differentiation in vertebrate neurons. However, roles of individual LAR-RPTP members have not been investigated using member-specific conditional knockout mice. Here, we show that loss of PTPδ had no overt effect on synapse development in mouse cultured hippocampal neurons. Moreover, loss of PTPδ in presynaptic CA1 hippocampal neurons did not influence neurotransmitter release in subicular pyramidal neurons, suggesting that PTPδ is not critical for presynaptic function in vivo. Our results demonstrate that PTPδ is not essential for synapse maintenance or transmission, at least in the mouse hippocampus, and underscore the importance of using sophisticated genetic approaches to confirm the roles of synaptic proteins.
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Affiliation(s)
- Kyung Ah Han
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea.,Core Protein Resources Center, DGIST, 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea
| | - Hee-Yoon Lee
- Department of Physiology and Neuroscience, Dental Research Institute, Seoul National University School of Dentistry, Seoul, 03080, South Korea
| | - Dongseok Lim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea
| | - Jungsu Shin
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea
| | - Taek Han Yoon
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea
| | - Xinran Liu
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Ji Won Um
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea.,Core Protein Resources Center, DGIST, 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea
| | - Se-Young Choi
- Department of Physiology and Neuroscience, Dental Research Institute, Seoul National University School of Dentistry, Seoul, 03080, South Korea
| | - Jaewon Ko
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu, 42988, South Korea.
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25
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Lee J, Kim J, Lee HY. Au(I)-Catalyzed Cyclization of Epoxyalkynes to Allylic Alcohol Containing Spiroketals and Application to the Total Synthesis of (-)-Alotaketal A. Org Lett 2020; 22:4073-4077. [PMID: 32391700 DOI: 10.1021/acs.orglett.0c01130] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A gold-catalyzed tandem spiroketalization of epoxyalkynes accompanied by epoxide rearrangement into the corresponding allylic alcohol was developed for the construction of functionalized spiroketals. This new synthetic methodology for unsaturated spiroketals warranted a facile total synthesis of alotaketal A from carvone via a corresponding epoxyalkyne precursor.
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Affiliation(s)
- Jaeyeon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Dajeon 34141, Republic of Korea
| | - Jiheon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Dajeon 34141, Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Dajeon 34141, Republic of Korea
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26
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Han KA, Lee HY, Lim D, Shin J, Yoon TH, Lee C, Rhee JS, Liu X, Um JW, Choi SY, Ko J. PTPσ Controls Presynaptic Organization of Neurotransmitter Release Machinery at Excitatory Synapses. iScience 2020; 23:101203. [PMID: 32516721 PMCID: PMC7284068 DOI: 10.1016/j.isci.2020.101203] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/04/2020] [Accepted: 05/22/2020] [Indexed: 12/16/2022] Open
Abstract
Leukocyte common antigen-related receptor tyrosine phosphatases (LAR-RPTPs) are evolutionarily conserved presynaptic organizers. The synaptic role of vertebrate LAR-RPTPs in vivo, however, remains unclear. In the current study, we analyzed the synaptic role of PTPσ using newly generated, single conditional knockout (cKO) mice targeting PTPσ. We found that the number of synapses was reduced in PTPσ cKO cultured neurons in association with impaired excitatory synaptic transmission, abnormal vesicle localization, and abnormal synaptic ultrastructure. Strikingly, loss of presynaptic PTPσ reduced neurotransmitter release prominently at excitatory synapses, concomitant with drastic reductions in excitatory innervations onto postsynaptic target areas in vivo. Furthermore, loss of presynaptic PTPσ in hippocampal CA1 pyramidal neurons had no impact on postsynaptic glutamate receptor responses in subicular pyramidal neurons. Postsynaptic PTPσ deletion had no effect on excitatory synaptic strength. Taken together, these results demonstrate that PTPσ is a bona fide presynaptic adhesion molecule that controls neurotransmitter release and excitatory inputs. Conditional PTPσ KO produces specifically impaired presynaptic functions Presynaptic PTPσ regulates glutamate release efficiency Presynaptic PTPσ does not transsynaptically regulate postsynaptic receptor responses
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Affiliation(s)
- Kyung Ah Han
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea; Core Protein Resources Center, DGIST, 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea
| | - Hee-Yoon Lee
- Department of Physiology and Neuroscience, Dental Research Institute, Seoul National University School of Dentistry, Seoul 03080, Korea
| | - Dongseok Lim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea
| | - Jungsu Shin
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea
| | - Taek Han Yoon
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea
| | - Chooungku Lee
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen 37075, Germany
| | - Jeong-Seop Rhee
- Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Göttingen 37075, Germany
| | - Xinran Liu
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Ji Won Um
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea; Core Protein Resources Center, DGIST, 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea
| | - Se-Young Choi
- Department of Physiology and Neuroscience, Dental Research Institute, Seoul National University School of Dentistry, Seoul 03080, Korea.
| | - Jaewon Ko
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungangdae-Ro, Hyeonpoong-Eup, Dalseong-Gun, Daegu 42988, Korea.
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27
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Kim MJ, Lee S, Kang T, Baik MH, Lee HY. Unexpected Selectivity of Intramolecular [3+2] Cycloaddition of Trimethylenemethane (TMM) Diyl toward Total Synthesis of Conidiogenone B. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Myungjo J. Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); 34141 Daejeon Republic of Korea
| | - Sanghyeon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Taek Kang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); 34141 Daejeon Republic of Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
| | - Hee-Yoon Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 34141 Daejeon Republic of Korea
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Affiliation(s)
- H Y Lee
- Department of Dermatology, Singapore General Hospital, Singapore
| | - D Creamer
- Department of Dermatology, King's College Hospital, London, U.K
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29
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Kwack KS, Lee HD, Jeon SW, Lee HY, Park S. Comparison of proton density fat fraction, simultaneous R2*, and apparent diffusion coefficient for assessment of focal vertebral bone marrow lesions. Clin Radiol 2019; 75:123-130. [PMID: 31676038 DOI: 10.1016/j.crad.2019.09.141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022]
Abstract
AIM To investigate the diagnostic performance of proton density fat fraction (PDFF) and simultaneous R2* for focal vertebral bone marrow lesion (VBML) assessment, compared with the apparent diffusion coefficient (ADC). MATERIALS AND METHODS One hundred and ninety-two spinal magnetic resonance imaging (MRI) examinations performed in 126 patients with focal VBMLs from March 2016 to November 2018 were reviewed retrospectively. The lesions were divided into metastases and benign VBMLs. The protocol consisted of routine morphological MRI sequences, followed by complex-based chemical shift imaging (CSE)-MRI and diffusion-weighted (DW)-MRI with a 1.5 T system. PDFF, R2*, and the ADC values were compared using the Mann-Whitney U-test. Receiver operating characteristic curve analysis was carried out to assess the diagnostic performance for differentiating metastases from focal benign VBMLs. RESULTS PDFF, R2*, and mean ADC values in metastases were significantly lower than those in benign VBMLs (p<0.05). The PDFF (area under the curve [AUC]= 0.968; 95% confidence interval [CI]=0.932-0.988) showed a significantly larger AUC compared with R2* (AUC=0.670; 95% CI=0.599-0.736) and ADC (AUC=0.801; 95% CI=0.738-0.855). The optimal cut-off value of the PDFF for predicting metastases was 9%; this threshold corresponded to a sensitivity of 96.67%, specificity of 90.28%, and accuracy of 94.27%. CONCLUSION PDFF is significantly more accurate than ADC and R2* for differentiating focal benign VMBLs from metastases.
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Affiliation(s)
- K-S Kwack
- Department of Radiology, Ajou University School of Medicine, Suwon, South Korea; Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon, South Korea
| | - H-D Lee
- Department of Orthopaedic Surgery, Ajou University School of Medicine, Suwon, South Korea
| | - S W Jeon
- Department of Radiology, Ajou University School of Medicine, Suwon, South Korea; Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon, South Korea
| | - H Y Lee
- Regional Clinical Trial Center, Ajou University Medical Center, Suwon, South Korea; Department of Biostatistics, Yonsei University College of Medicine, Seoul, South Korea
| | - S Park
- Department of Radiology, Ajou University School of Medicine, Suwon, South Korea; Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon, South Korea.
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Jung B, Lee JK, Kim J, Kang EK, Han SY, Lee HY, Choi IS. Synthetic Strategies for (-)-Cannabidiol and Its Structural Analogs. Chem Asian J 2019; 14:3749-3762. [PMID: 31529613 DOI: 10.1002/asia.201901179] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/13/2019] [Indexed: 12/14/2022]
Abstract
(-)-Cannabidiol ((-)-CBD), a non-psychoactive phytocannabinoid from Cannabis, and its structural analogs have received growing attention in recent years because of their potential therapeutic benefits, including neuroprotective, anti-epileptic, anti-inflammatory, anxiolytic, and anti-cancer properties. (-)-CBD and its analogs have been obtained mainly based on extraction from the natural source; however, the conventional extraction-based methods have some drawbacks, such as poor quality control along with purification difficulty. Chemical-synthetic strategies for (-)-CBD could tackle these issues, and, additionally, generate novel (-)-CBD analogs that exhibit advanced biological activities. This review concisely summarizes the historic and recent milestones in the synthetic strategies for (-)-CBD and its analogs.
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Affiliation(s)
| | - Jungkyu K Lee
- Department of Chemistry, Green-Nano Materials Research Center, Kyungpook National University, Daegu, 41566, Korea
| | - Jungnam Kim
- Department of Chemistry, KAIST, Daejeon, 34141, Korea
| | - Eunhye K Kang
- Department of Chemistry, KAIST, Daejeon, 34141, Korea
| | | | - Hee-Yoon Lee
- Department of Chemistry, KAIST, Daejeon, 34141, Korea
| | - Insung S Choi
- Department of Chemistry, KAIST, Daejeon, 34141, Korea
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31
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Cho JY, Kim KH, Lee SE, Lee HY, Choi JO, Jeon ES, Kim MS, Kim JJ, Hwang KK, Chae SC, Kang SM, Choi DJ, Yoo BS, Cho MC, Oh BH. P3520Admission hyperglycemia is a predictor of mortality of acute heart failure: comparison between patients with and without diabetes mellitus. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Regardless of diabetes mellitus (DM), admission hyperglycemia is not uncommon in patients with acute heart failure (AHF). Although DM is a well-known predictor of mortality in AHF, the impacts of admission hyperglycemia on clinical outcomes in non-DM patients with AHF have been poorly studied. The aim of this study, therefore, was to compare the impact of admission hyperglycemia on long-term clinical outcomes in AHF patients with or without DM.
Methods
Among 5,625 AHF patients enrolled in a nationwide registry, a total of 5,541 patients were enrolled and divided into 2 groups; DM group (n=2,125, 70.4±11.4 years) vs. non-DM group (n=3,416, 67.3±16.0 years). Each group were further divided into 2 groups according to the presence of admission hyperglycemia (admission serum glucose level >200mg/dl); admission hyperglycemia (n=248) and no hyperglycemia (n=3,168) in non-DM; admission hyperglycemia (n=799) and no hyperglycemia (n=1,326) in DM. All-cause death and hospitalization due to HF (HHF) during 1-year follow-up were compared.
Results
Death was developed in 1,220 patients (22.2%) including 269 inhospital deaths (4.9%) during 1-year of follow-up. Death rate were significantly higher in DM than in non-DM group (24.8% vs 20.5%, p<0.001), however there was no difference in inhospital death (5.1% vs 4.7%, p=0.534). Both inhospital death (7.6% vs. 4.2%, p<0.001) and 1-year death (26.2% vs. 21.3%, p=0.001) were more frequent in AHF patients with hyperglycemia. On Kaplan-Meier survival curve analysis, however, admission hyperglycemia was associated with significantly higher death (p<0.001 by log-rank test) and rehospitalization (p=0.006 by log-rank test) in non-DM group, but not in DM group. In non-DM group, admission hyperglycemia was an independent predictor of 1-year mortality (HR 1.46, 95% CI 1.10–1.93, p=0.009).
Conclusion
DM was a significant predictor of long-term mortality in patients with AHF. Admission hyperglycemia was associated with both higher inhospital and 1-year mortality. The present study also demonstrated that admission hyperglycemia is an independent predictor of mortality in non-DM patients with AHF, but not in DM patients. In addition to the presence of DM, admission hyperglycemia would be a useful marker in the risk stratification of AHF, especially in non-DM patients.
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Affiliation(s)
- J Y Cho
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - K H Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - S E Lee
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - H Y Lee
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - J O Choi
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - E S Jeon
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - M S Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - J J Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - K K Hwang
- Chungbuk National University Hospital, Cheongju, Korea (Republic of)
| | - S C Chae
- Chungbuk National University Hospital, Cheongju, Korea (Republic of)
| | - S M Kang
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - D J Choi
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - B S Yoo
- Chonnam National University Hospital, Cardiology, Gwangju, Korea (Republic of)
| | - M C Cho
- Chungbuk National University Hospital, Cheongju, Korea (Republic of)
| | - B H Oh
- Seoul National University Hospital, Seoul, Korea (Republic of)
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32
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Albright DL, Lee HY, McDaniel JT, Kroner D, Davis J, Godfrey K, Li Q. Small area estimation of human papillomavirus vaccination coverage among school-age children in Alabama counties. Public Health 2019; 177:120-127. [PMID: 31561050 DOI: 10.1016/j.puhe.2019.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 07/17/2019] [Accepted: 08/10/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVES This study estimated county-level human papillomavirus (HPV) vaccination initiation rates in Alabama and determined whether disparities existed between counties in the Mississippi Delta region (MDR) and Appalachian region (AR). STUDY DESIGN This study used an observational cross-sectional design. METHODS We used small area estimation methodology to estimate rates of medical provider-verified HPV vaccine initiation among school-age children in Alabama. Data for the study were retrieved from the 2015 National Immunization Survey (n = 22,205) and the US Census Bureau. RESULTS The predictive model results showed that older age (odds ratio [OR] = 1.22, 95% confidence interval [CI] = 1.16, 1.29) was positively associated with vaccination initiation and black (OR = 0.79, 95% CI = 0.71, 0.87), white (OR = 0.56, 95% CI = 0.52, 0.60), and 'other' race/ethnicities (OR = 0.78, 95% CI = 0.70, 0.86), compared with Hispanics, and was negatively associated with vaccination initiation. The median (x̃)-modeled HPV vaccination initiation rate for all Alabama counties was 50.83% (interquartile range = 5.00%). Modeled HPV vaccination initiation rates were lowest in AR counties (x̃ = 49.81%), followed by counties not in the AR or MDR (x̃ = 53.26%) and MDR counties (x̃ = 54.90%). CONCLUSIONS Culturally sensitive school-based HPV vaccine delivery programs are needed for children living in AR counties in Alabama.
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Affiliation(s)
- D L Albright
- Hill Crest Foundation Endowed Chair of Mental Health, School of Social Work, The University of Alabama, Box 870314, Tuscaloosa, AL, 35487-0314, USA.
| | - H Y Lee
- Endowed Academic Chair in Social Work (Health), School of Social Work, The University of Alabama, Tuscaloosa, AL, 35487, USA.
| | - J T McDaniel
- Department of Public Health and Recreation Professions, Southern Illinois University, 475 Clocktower Drive, Carbondale, IL, 62901, USA.
| | - D Kroner
- Department of Criminology and Criminal Justice, Southern Illinois University, Carbondale, IL, 62901, USA.
| | - J Davis
- Missouri School of Dentistry and Oral Health, A.T. Still University, 1500 Park Ave. Street, Louis, MO, 63104, USA.
| | - K Godfrey
- School of Social Work, The University of Alabama, Tuscaloosa, AL, 35487, USA.
| | - Q Li
- School of Social Work, The University of Alabama, Tuscaloosa, AL, 35487, USA.
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Kim SW, Kim MA, Chang Y, Lee HY, Yoon JS, Lee YB, Cho EJ, Lee JH, Yu SJ, Yoon JH, Park KJ, Kim YJ. Prognosis of surgical hernia repair in cirrhotic patients with refractory ascites. Hernia 2019; 24:481-488. [PMID: 31512088 DOI: 10.1007/s10029-019-02043-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 08/27/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Abdominal wall hernias are common in patients with ascites. Elective surgical repair is recommended for the treatment of abdominal wall hernias. However, surgical hernia repair in cirrhotic patients with refractory ascites is controversial. In this study, we aimed to evaluate the outcomes of elective surgical hernia repair in patients with liver cirrhosis with and without refractory ascites. METHOD From January 2005 to June 2018, we retrospectively reviewed the records of consecutive patients with liver cirrhosis who underwent a surgical hernia repair. RESULTS This study included 107 patients; 31 patients (29.0%) had refractory ascites. Preoperatively, cirrhotic patients with refractory ascites had a higher median model for end-stage liver disease (MELD) score (13.0 vs 11.0, P = 0.001) than those without refractory ascites. The 30-day mortality rate (3.2% vs 0%, P = 0.64) and the risk of recurrence (hazard ratio 0.410; 95% CI 0.050-3.220; P = 0.39) did not differ significantly between cirrhotic patients with refractory ascites and cirrhotic patients without refractory ascites. Among cirrhotic patients with refractory ascites, albumin (P = 0.23), bilirubin (P = 0.37), creatinine (P = 0.97), and sodium levels (P = 0.35) did not change significantly after surgery. CONCLUSION In advanced liver cirrhosis patients with refractory ascites, hernias can be safely treated with elective surgical repair. Mortality rate within 30 days did not differ by the presence or absence of refractory ascites. Elective hernia repair might be beneficial for treatment of abdominal wall hernia in cirrhotic patients with refractory ascites.
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Affiliation(s)
- S W Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - M A Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Y Chang
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - H Y Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea.,Department of Internal Medicine, Eulji General Hospital, Eulji University School of Medicine, Seoul, South Korea
| | - J S Yoon
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea.,Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - Y B Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - E J Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - J-H Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - S J Yu
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - J-H Yoon
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - K J Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Y J Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea. .,Department of Internal Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.
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34
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Affiliation(s)
- Tamal Roy
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Myungjo J. Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Yang Yang
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Suyeon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Xinyi Ren
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Anders Kadziola
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Ji-Woong Lee
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
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35
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Jeong KJ, Park SY, Cho KH, Sohn JS, Lee J, Kim YK, Kang J, Park CG, Han JW, Lee HY. Correction: The Rho/ROCK pathway for lysophosphatidic acid-induced proteolytic enzyme expression and ovarian cancer cell invasion. Oncogene 2019; 38:5108-5110. [PMID: 30926886 DOI: 10.1038/s41388-019-0769-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The original version of this article contained an error in the published figures Fig 2 and Fig 3f, where the information was inadvertently duplicated. This error does not alter the conclusions of the paper. The corrected figures are published in this correction notice. The authors sincerely apologize for this error.
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Affiliation(s)
- K J Jeong
- Department of Pharmacology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - S Y Park
- Department of Pharmacology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - K H Cho
- Department of Pharmacology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - J S Sohn
- Department of Pathology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - J Lee
- Department of Microbiology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - Y K Kim
- Department of Pharmacology, College of Pharmacy, Sookmyung Women's University, Seoul, Korea
| | - J Kang
- Department of Pharmacology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - C G Park
- Department of Pharmacology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea
| | - J W Han
- Department of Biochemistry and Molecular Biology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - H Y Lee
- Department of Pharmacology, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, Korea.
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36
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Affiliation(s)
- Jung-Ah Shin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- The Fourth R&D Institute-6, Agency for Defense Development, Daejeon 34186, Korea
| | - Jiheon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Hongsoo Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Sura Ha
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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37
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Juhl M, Kim M, Lee HY, Baik MH, Lee JW. Aldehyde Carboxylation: A Concise DFT Mechanistic Study and a Hypothetical Role of CO2 in the Origin of Life. Synlett 2019. [DOI: 10.1055/s-0037-1611738] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Carbon dioxide is arguably one of the most stable carbon-based molecules, yet enzymatic carbon fixation processes enabled the sustainable life cycle on Earth. Chemical reactions involving CO2-functionalization often suffer from low efficiency with highly reactive substrates. We recently reported mild carboxylation of aldehydes to furnish α-keto acids – a building block for chiral α-amino acids via reductive amination. Here, we discuss potential reaction mechanisms of aldehyde carboxylation reactions based on two promoters: NHCs and KCN in the carboxylation reaction. New DFT mechanistic studies suggested a lower reaction barrier for a CO2-functionalization step, implying a potential role of CO2 in prebiotic evolution of organic molecules in the primordial soup.1 Introduction: Aldehydes, Benzoins, Carboxylic Acids2 CO2-Activation: NHC, Cyanide, Lewis Acid and Water3 A Breslow Intermediate: Benzoin Reaction vs. Carboxylation with CO2
4 Carboxylation in the Primordial Soup5 Conclusion
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Affiliation(s)
- Martin Juhl
- Department of Chemistry, Nano-Science Center, University of Copenhagen
| | - Myungjo Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST)
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS)
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST)
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST)
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS)
| | - Ji-Woong Lee
- Department of Chemistry, Nano-Science Center, University of Copenhagen
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38
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Kelly KJ, Kawano T, O'Donnell JM, Gomez JA, Devlin M, Neudecker D, Talou P, Lovell AE, White MC, Haight RC, Taddeucci TN, Mosby SM, Lee HY, Wu CY, Henderson R, Henderson J, Buckner MQ. Preequilibrium Asymmetries in the ^{239}Pu(n,f) Prompt Fission Neutron Spectrum. Phys Rev Lett 2019; 122:072503. [PMID: 30848631 DOI: 10.1103/physrevlett.122.072503] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/09/2019] [Indexed: 06/09/2023]
Abstract
The physical properties of neutrons emitted from neutron-induced fission are fundamental to our understanding of nuclear fission. However, while state-of-the-art fission models still incorporate isotropic fission neutron spectra, it is believed that the preequilibrium prefission component of these spectra is strongly anisotropic. The lack of experimental guidance on this feature has not motivated incorporation of anisotropic neutron spectra in fission models, though any significant anisotropy would impact descriptions of a fissioning system. In the present work, an excess of counts at high energies in the fission neutron spectrum of ^{239}Pu is clearly observed and identified as an excess of the preequilibrium prefission distribution above the postfission neutron spectrum. This excess is separated from the underlying postfission neutron spectrum, and its angular distribution is determined as a function in incident neutron energy and outgoing neutron detection angle. Comparison with neutron scattering models provides the first experimental evidence that the preequilibrium angular distribution is uncorrelated with the fission axis. The results presented here also impact the interpretation of several influential prompt fission neutron spectrum measurements.
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Affiliation(s)
- K J Kelly
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Kawano
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J M O'Donnell
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J A Gomez
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Devlin
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Neudecker
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - P Talou
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A E Lovell
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M C White
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R C Haight
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T N Taddeucci
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S M Mosby
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - H Y Lee
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C Y Wu
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - R Henderson
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J Henderson
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M Q Buckner
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Hwang MH, Cho KH, Jeong KJ, Park YY, Kim JM, Yu SL, Park CG, Mills GB, Lee HY. Correction: RCP induces Slug expression and cancer cell invasion by stabilizing β1 integrin. Oncogene 2019; 38:3970-3971. [PMID: 30679788 DOI: 10.1038/s41388-019-0678-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Following the publication of this article the authors noted that images were inadvertently duplicated in Fig. 1b. The corrected Fig. 1 can be found in the associated Correction. The conclusions of this paper are not affected. The authors sincerely apologize for this error. This error has not been corrected in the HTML or PDF of the original Article.
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Affiliation(s)
- M H Hwang
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - K H Cho
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - K J Jeong
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Y-Y Park
- Asan Institute for Life Sciences, Asan Medical Center, Department of Medicine, University of Ulsan College of Medicine, Seoul, Korea
| | - J M Kim
- Cancer Research Institute, Regional Cancer Center and Infection Signaling Network Research Center, Chungnam National University School of Medicine, Daejeon, Korea
| | - S-L Yu
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - C G Park
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - G B Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - H Y Lee
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea.
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40
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Kim G, Kim MJ, Chung G, Lee HY, Han S. (+)-Dimericbiscognienyne A: Total Synthesis and Mechanistic Investigations of the Key Heterodimerization. Org Lett 2018; 20:6886-6890. [DOI: 10.1021/acs.orglett.8b03025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Geon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Myungjo J. Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Garam Chung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Korea
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41
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Lee HY. 4111Clinical Implications of microRNA score in discriminating vasospatic angina from atherothrombotic angina or non-coronary chest pain. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Y Lee
- Seoul National University Hospital, Seoul, Korea Republic of
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42
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Kim BO, Seo JK, Kim GS, Lee HY. P3515Systolic blood pressure difference between arms and chronic kidney disease in the community based 10-year cohort study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- B O Kim
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - J K Seo
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - G S Kim
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - H Y Lee
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
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43
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Kim GS, Kim BO, Seo JK, Lee HY, Jung IH, Byun YS. P1280Non-alcoholic fatty liver disease and hypertension in the community based cohort study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- G S Kim
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - B O Kim
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - J K Seo
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - H Y Lee
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - I H Jung
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
| | - Y S Byun
- Inje University, Sanggye-Paik Hospital, Cardiology, SEOUL, Korea Republic of
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44
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Cho HJ, Choe WS, Lee HY, Lee SE, Oh BH. P6536Comparison of characteristics and 3-year outcomes in patients with acute heart failure with preserved, mid-range, and reduced ejection fraction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H J Cho
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea Republic of
| | - W S Choe
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea Republic of
| | - H Y Lee
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea Republic of
| | - S E Lee
- Asan Medical Center, Department of Cardiology, Seoul, Korea Republic of
| | - B H Oh
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea Republic of
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45
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Lee SE, Lee HY. P278Coronary artery bypass graft versus percutaneous coronary intervention in patients presented with acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S E Lee
- Asan Medical Center, Seoul, Korea Republic of
| | - H Y Lee
- Seoul National University Hospital, Seoul, Korea Republic of
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46
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Cho JY, Kim KH, Lee SE, Lee HY, Choi JO, Jeon ES, Kim JJ, Hwang KK, Chae SC, Baek SH, Kang SM, Choi DJ, Yoo BS, Cho MC, Oh BH. P6542Post-discharge worsening renal function predicts long-term adverse clinical outcomes in patients with acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Y Cho
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - K H Kim
- Chonnam National University Hospital, Cardiology, Gwangju, Korea Republic of
| | - S E Lee
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - H Y Lee
- Seoul National University Hospital, Seoul, Korea Republic of
| | - J O Choi
- Samsung Medical Center, Seoul, Korea Republic of
| | - E S Jeon
- Samsung Medical Center, Seoul, Korea Republic of
| | - J J Kim
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - K K Hwang
- Chungbuk National University Hospital, Cheongju, Korea Republic of
| | - S C Chae
- Kyungpook National University Hospital, Daegu, Korea Republic of
| | - S H Baek
- Seoul St. Mary's Hospital, Seoul, Korea Republic of
| | - S M Kang
- Yonsei University College of Medicine, Seoul, Korea Republic of
| | - D J Choi
- Seoul National University Bundang Hospital, Seongnam, Korea Republic of
| | - B S Yoo
- Wonju Christian Hospital, Wonju, Korea Republic of
| | - M C Cho
- Chungbuk National University Hospital, Cheongju, Korea Republic of
| | - B H Oh
- Seoul National University Hospital, Seoul, Korea Republic of
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47
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Oh J, Choi JO, Cho HJ, Lee HY, Jung SH, Kim JJ, Jeon ES, Kang SM. P2809The clinical implication of donor-recipient mismatch in heart transplant recipients; data from the Korean organ transplantation registry (KOTRY). Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Oh
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
| | - J O Choi
- Samsung Medical Center, Department of Cardiology, Seoul, Korea Republic of
| | - H J Cho
- Seoul National University College of Medicine, Department of Cardiology, Seoul, Korea Republic of
| | - H Y Lee
- Seoul National University College of Medicine, Department of Cardiology, Seoul, Korea Republic of
| | - S H Jung
- Asan Medical Center, Department of Cardiovascular Surgery, Seoul, Korea Republic of
| | - J J Kim
- Asan Medical Center, Department of Cardiovascular Surgery, Seoul, Korea Republic of
| | - E S Jeon
- Samsung Medical Center, Department of Cardiology, Seoul, Korea Republic of
| | - S M Kang
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
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48
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Lee JJ, Kim HS, Lee JS, Park J, Shin SC, Song S, Lee E, Choi JE, Suh JW, Lee H, Kim EE, Seo EK, Shin DH, Lee HY, Lee HY, Lee KJ. Small molecule activator of Nm23/NDPK as an inhibitor of metastasis. Sci Rep 2018; 8:10909. [PMID: 30026594 PMCID: PMC6053448 DOI: 10.1038/s41598-018-29101-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 06/27/2018] [Indexed: 12/02/2022] Open
Abstract
Nm23-H1/NDPK-A is a tumor metastasis suppressor having NDP kinase (NDPK) activity. Nm23-H1 is positively associated with prolonged disease-free survival and good prognosis of cancer patients. Approaches to increasing the cellular levels of Nm23-H1 therefore have significance in the therapy of metastatic cancers. We found a small molecule, (±)-trans-3-(3,4-dimethoxyphenyl)-4-[(E)-3,4-dimethoxystyryl]cyclohex-1-ene, that activates Nm23, hereafter called NMac1. NMac1 directly binds to Nm23-H1 and increases its NDPK activity. Employing various NMac1 derivatives and hydrogen/deuterium mass spectrometry (HDX-MS), we identified the pharmacophore and mode of action of NMac1. We found that NMac1 binds to the C-terminal of Nm23-H1 and induces the NDPK activation through its allosteric conformational changes. NMac1-treated MDA-MB-231 breast cancer cells showed dramatic changes in morphology and actin-cytoskeletal organization following inhibition of Rac1 activation. NMac1 also suppressed invasion and migration in vitro, and metastasis in vivo, in a breast cancer mouse model. NMac1 as an activator of NDPK has potential as an anti-metastatic agent.
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Affiliation(s)
- Jae-Jin Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Hwang Suk Kim
- Department of Chemistry, Korea Advanced Institute of Science & Technology, Daejeon, 34141, Korea
| | - Ji-Sun Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 08826, Korea
| | - Jimin Park
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Sang Chul Shin
- Biomedical Research Institute, Korea Institute of Science & Technology, Seoul, 02792, Korea
| | - Soonwha Song
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Eunsun Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Jung-Eun Choi
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Ji-Wan Suh
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Hongsoo Lee
- Department of Chemistry, Korea Advanced Institute of Science & Technology, Daejeon, 34141, Korea
| | - Eunice EunKyeong Kim
- Biomedical Research Institute, Korea Institute of Science & Technology, Seoul, 02792, Korea
| | - Eun Kyoung Seo
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Dong Hae Shin
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea
| | - Ho-Young Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, 08826, Korea
| | - Hee-Yoon Lee
- Department of Chemistry, Korea Advanced Institute of Science & Technology, Daejeon, 34141, Korea.
| | - Kong-Joo Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, 03760, Korea.
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49
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Chen VL, Yeh ML, Le AK, Jun M, Saeed WK, Yang JD, Huang CF, Lee HY, Tsai PC, Lee MH, Giama N, Kim NG, Nguyen PP, Dang H, Ali HA, Zhang N, Huang JF, Dai CY, Chuang WL, Roberts LR, Jun DW, Lim YS, Yu ML, Nguyen MH. Anti-viral therapy is associated with improved survival but is underutilised in patients with hepatitis B virus-related hepatocellular carcinoma: real-world east and west experience. Aliment Pharmacol Ther 2018; 48:44-54. [PMID: 29797518 DOI: 10.1111/apt.14801] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/02/2018] [Accepted: 04/23/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Hepatitis B virus (HBV) is the leading cause of hepatocellular carcinoma (HCC) worldwide. It remains incompletely understood in the real world how anti-viral therapy affects survival after HCC diagnosis. METHODS This was an international multicentre cohort study of 2518 HBV-related HCC cases diagnosed between 2000 and 2015. Cox proportional hazards models were utilised to estimate hazard ratios (HR) with 95% (CI) for anti-viral therapy and cirrhosis on patients' risk of death. RESULTS Approximately, 48% of patients received anti-viral therapy at any time, but only 17% were on therapy at HCC diagnosis (38% at US centres, 11% at Asian centres). Anti-viral therapy would have been indicated for >60% of the patients not on anti-viral therapy based on American criteria. Patients with cirrhosis had lower 5-year survival (34% vs 46%; P < 0.001) while patients receiving anti-viral therapy had increased 5-year survival compared to untreated patients (42% vs 25% with cirrhosis and 58% vs 36% without cirrhosis; P < 0.001 for both). Similar findings were seen for other patient subgroups by cancer stages and cancer treatment types. Anti-viral therapy was associated with a decrease in risk of death, whether started before or after HCC diagnosis (adjusted HR 0.62 and 0.79, respectively; P < 0.001). CONCLUSIONS Anti-viral therapy improved overall survival in patients with HBV-related HCC across cancer stages and treatment types but was underutilised at both US and Asia centres. Expanded use of anti-viral therapy in HBV-related HCC and better linkage-to-care for HBV patients are needed.
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Affiliation(s)
- V L Chen
- Division of Gastroenterology, University of Michigan Health System, Ann Arbor, MI, USA.,Department of Medicine, Stanford University Medical Center, Stanford, CA, USA
| | - M-L Yeh
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - A K Le
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, CA, USA
| | - M Jun
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - W K Saeed
- Division of Gastroenterology, Hanyang University Medical Center, Seoul, Korea
| | - J D Yang
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - C-F Huang
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - H Y Lee
- Division of Gastroenterology, Hanyang University Medical Center, Seoul, Korea
| | - P-C Tsai
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - M-H Lee
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - N Giama
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - N G Kim
- Stanford University School of Medicine, Stanford, CA, USA
| | - P P Nguyen
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, CA, USA
| | - H Dang
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, CA, USA
| | - H A Ali
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - N Zhang
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - J-F Huang
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - C-Y Dai
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - W-L Chuang
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - L R Roberts
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - D W Jun
- Division of Gastroenterology, Hanyang University Medical Center, Seoul, Korea
| | - Y-S Lim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - M-L Yu
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - M H Nguyen
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Stanford, CA, USA
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Kim HY, Nam JY, Lee JH, Lee HA, Chang Y, Lee HY, Cho H, Lee DH, Cho YY, Cho EJ, Yu SJ, Lee JM, Kim YJ, Yoon JH. Intensity of surveillance for hepatocellular carcinoma determines survival in patients at risk in a hepatitis B-endemic area. Aliment Pharmacol Ther 2018; 47:1490-1501. [PMID: 29611209 DOI: 10.1111/apt.14623] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 02/01/2018] [Accepted: 03/01/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Data are insufficient regarding the survival benefit of surveillance for hepatocellular carcinoma (HCC). AIM To investigate the effectiveness of HCC surveillance in a hepatitis B-endemic population. METHODS This retrospective cohort study included 1402 consecutive patients who were newly diagnosed with HCC between 2005 and 2012 at a single tertiary hospital in Korea. The primary endpoint was overall survival. Lead-time and length-time biases were adjusted (sojourn time = 140 days) and sensitivity analyses were performed. RESULTS The most common aetiology was hepatitis B (80.4%). Cirrhosis was present in 78.2%. HCC was diagnosed during regular surveillance (defined as mean interval of ultrasonography <8 months, n = 834), irregular surveillance (n = 104) or nonsurveillance (n = 464). Patients in the regular surveillance group were diagnosed at earlier stages ([very] early stage, 64.4%) than the irregular surveillance (40.4%) or nonsurveillance (26.9%) groups and had more chance for curative treatments (52.4%) than the irregular surveillance (39.4%) or nonsurveillance (23.3%) groups (all P < 0.001). Mortality risk was significantly lower in the regular surveillance group (adjusted hazard ratio [aHR], 0.69; 95% [CI], 0.57-0.83) but not in the irregular surveillance group (aHR, 0.94; 95% CI, 0.69-1.28) compared with the nonsurveillance group after adjusting for confounding factors and lead-time. When the subjects were restricted to cirrhotic patients or Child-Pugh class A/B patients, similar results were obtained for mortality risk reduction between groups. CONCLUSIONS HCC surveillance was associated with longer survival owing to earlier diagnosis and curative treatment. Survival advantage was significant with regular surveillance but not with irregular surveillance.
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Affiliation(s)
- H Y Kim
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - J Y Nam
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J-H Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - H A Lee
- Clinical Trial Center, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Y Chang
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - H Y Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - H Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - D H Lee
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Y Y Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - E J Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S J Yu
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J M Lee
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Y J Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J-H Yoon
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
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