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Woo J, Han S, Yoon J. Mn-doped Sequentially Electrodeposited Co-based Oxygen Evolution Catalyst for Efficient Anion Exchange Membrane Water Electrolysis. ACS Appl Mater Interfaces 2024. [PMID: 38662424 DOI: 10.1021/acsami.4c01865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Designing high-performance and durable oxygen evolution reaction (OER) catalysts is important for green hydrogen production through anion exchange membrane water electrolysis (AEMWE). Herein, a series of Mn-doped Co-based OER catalysts supported on FeOxHy (FCMx) are presented to enhance the OER activity. Mn doping effectively reduces the size of the Co oxide particles, thereby augmenting the active surface area. Moreover, Mn doping induces the creation of oxygen vacancies, leading to an efficient structural conversion during the OER, which is confirmed via in situ Raman spectroscopy. Under optimal conditions, the catalyst exhibits an overpotential of 234.4 mV at 10 mA cm-2 and a Tafel slope of 37.2 mV dec-1 under half-cell conditions. The AEMWE single-cell system demonstrates a current density of 1560 mA cm-2 at 1.8 V at 60 °C with a degradation rate of 0.4 mV h-1 for 500 h at 500 mA cm-2. Our development of a robust OER catalyst represents notable progress in the field of nonprecious-metal water electrolysis, marking a step toward cost-effective green hydrogen production.
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Affiliation(s)
- Jinse Woo
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
| | - Sanghwi Han
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
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2
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Ruddy S, Bapna M, Karnik K, Yung L, Rodriguez G, Urban C, Yoon J, Prasad N, Segal-Maurer S, Turett G. Novel case of combination antibiotic therapy for treatment of a complicated polymicrobial urinary tract infection with one organism harboring a metallo-β-lactamase (MBL) in a pregnant patient. IDCases 2024; 36:e01946. [PMID: 38646598 PMCID: PMC11031789 DOI: 10.1016/j.idcr.2024.e01946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 02/23/2024] [Accepted: 04/14/2024] [Indexed: 04/23/2024] Open
Abstract
Carbapenem resistance due to metallo-beta-lactamases (MBLs) is a global phenomenon and an important challenge for antibiotic therapy (Boyd et al., 2020 [1]). While previous reports have demonstrated both in vitro and in vivo synergy using the combination of ceftazidime-avibactam and aztreonam against Stenotrophomonas maltophilia, an MBL-harboring organism, this treatment strategy has not been reported during pregnancy (Mojic et al., 2017 [2], [3], Mojica et al., 2016 [4], Alexander et al., 2020 [5]). We describe a 33-year-old pregnant female with polymicrobial, bilateral pyelonephritis caused by Stenotrophomonas maltophilia and other gram-negative bacteria. The organisms were eradicated with the combination of ceftazidime-avibactam and aztreonam followed by successful delivery with no observed adverse effects in either mother or child post-partum.
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Affiliation(s)
- S. Ruddy
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
| | - M. Bapna
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
| | - K. Karnik
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
| | - L. Yung
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- Weill Cornell Medicine, Cornell University, New York, NY 10065, United States of America
| | - G. Rodriguez
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- Columbia University School of Nursing, New York, NY, 10032, United States of America
| | - C. Urban
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- Weill Cornell Medicine, Cornell University, New York, NY 10065, United States of America
| | - J. Yoon
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- Weill Cornell Medicine, Cornell University, New York, NY 10065, United States of America
| | - N. Prasad
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- Weill Cornell Medicine, Cornell University, New York, NY 10065, United States of America
| | - S. Segal-Maurer
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- Weill Cornell Medicine, Cornell University, New York, NY 10065, United States of America
| | - G. Turett
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main St, Flushing, NY 11355, United States of America
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Lee KM, Joo H, Park EJ, Kim J, Lee Y, Yoon J, Lee C. Electrochemical production of hydroxylamine from nitrate on metal electrodes: A comparative study of selectivity and efficiency. Chemosphere 2024; 353:141537. [PMID: 38408568 DOI: 10.1016/j.chemosphere.2024.141537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
Despite the great potential of electrochemical nitrate reduction as a hydroxylamine production method, this strategy has not been sufficiently examined, and the effects of electrode material type on the selectivity and efficiency of this reduction remain underexplored. To bridge this gap, the present study evaluated six metals (Ag, Cu, Ni, Sn, Ti, and Zn) as cathode materials for the electrochemical reduction of nitrate to hydroxylamine, showing that the selectivity of hydroxylamine production was maximal for Sn, while the corresponding faradaic and energy utilization efficiencies were maximal for Ti. Although all tested materials favored nitrate reduction over hydrogen evolution, the disparity in the onset potentials of these reactions did not adequately explain the variations in nitrate removal efficiency, which was found to be influenced by material resistance and charge-transfer properties. The rate constants of elementary nitrate reduction steps determined from the time-dependent concentrations of nitrate and its reduction products (nitrous acid, hydroxylamine, and ammonium) were used to calculate the selectivity and efficiency of hydroxylamine production for each electrode. In turn, these selectivities and efficiencies were correlated with the density functional theory-computed adsorption energies of a key hydroxylamine precursor on different electrodes to afford a volcano-type plot with Ti and Sn at its pinnacle. Thus, this study introduces valuable descriptors and methods for the further screening of electrocatalysts for hydroxylamine generation and the establishment of more environmentally friendly hydroxylamine production techniques utilizing sustainable electricity.
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Affiliation(s)
- Ki-Myeong Lee
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Hwajoo Joo
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Erwin Jongwoo Park
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Joohyun Kim
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yunjeong Lee
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Changha Lee
- School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
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Han S, Ryu JH, Lee WB, Ryu J, Yoon J. Translating the Optimized Durability of Co-Based Anode Catalyst into Sustainable Anion Exchange Membrane Water Electrolysis. Small 2024:e2311052. [PMID: 38282379 DOI: 10.1002/smll.202311052] [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] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/15/2024] [Indexed: 01/30/2024]
Abstract
Development of robust electrocatalysts for the oxygen evolution reaction (OER) underpins the efficient production of green hydrogen via anion exchange membrane water electrolysis (AEMWE). This study elucidates the factors contributing to the degradation of cobalt-based (Co-based) OER catalysts synthesized via electrodeposition, thus establishing strategic approaches to enhance their longevity. Systematic variations in the electroplating process and subsequent heat treatment reveal a delicate balance between catalytic activity and durability, substantiated by comprehensive electrochemical assessments and material analyses. Building upon these findings, the Co-based anode is successfully optimized in the AEMWE single-cell configuration, showcasing an average degradation rate of 0.07 mV h-1 over a continuous operation for 1500 h at a current density of 1 A cm-2 .
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Affiliation(s)
- Sanghwi Han
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jae Hyun Ryu
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Won Bo Lee
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jaeyune Ryu
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul, 08826, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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Kasthuri V, Laguna A, Kim N, Yoon J, Ahn S. Abstract No. 289 Modern Search Analytics: What Are Patients Asking ecan Uterine Artery Embolization? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.356] [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: 02/27/2023] Open
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Kasthuri V, Kim N, Laguna A, Yoon J, Ahn S. Abstract No. 604 Modern Search Analytics: What Are Patients Asking about Prostate Artery Embolization? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.462] [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: 02/27/2023] Open
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7
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Kasthuri V, Shamshad A, Davis M, Yoon J, Kumar S, Ahn S. Abstract No. 605 Modern Search Analytics: What Are Patients Asking about Varicocele Embolization? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.463] [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: 02/26/2023] Open
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8
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Kasthuri V, Gillette J, Zhang H, Kumar S, Yoon J, Ahn S. Abstract No. 190 Modern Search Analytics: What Are Patients Asking about Varicose Vein Ablation? J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.247] [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: 02/27/2023] Open
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9
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Cenko E, Bergami M, Yoon J, Van Der Schaar M, Manfrini O, Gale C, Vasiljevic Z, Stankovic G, Vavlukis M, Kedev S, Milicic D, Dorobantu M, Badimon L, Bugiardini R. Relation between sex and mortality after myocardial infarction in high-income and middle-income European countries. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The relationship between female sex and cardiovascular mortality in myocardial infarction (MI) is controversial. Most available data are from high-income countries (HIC) where baseline risk is lower and revascularization procedures are more likely, so the generalizability to other populations is unclear.
Purpose
The main goal of this study was to unravel the relation between patient-specific revascularization through percutaneous coronary intervention (PCI) and mortality among women and men.
Methods
Data were drawn from the ISACS-Archives (NCT04008173) which includes a large cohort of patients enrolled in 6 European HIC (Croatia, Italy, Lithuania, Hungary, Romania, and United Kingdom) and 7 middle-income countries (MIC; Bosnia & Herzegovina, Kosovo, Macedonia, Moldova, Montenegro, and Serbia). Participants were stratified by MI subtypes: STEMI and NSTEMI. The primary outcome was 30-day mortality. To yield unbiased sex estimates of the effects of MI on mortality we modeled covariates and outcomes by propensity score-based analytic methods. We calculated the women to men risk ratios (RRs) using weighting with estimates compared by test of interaction on the log scale.
Results
The cohort consisted of 22,087 patients with MI (30.2% women). Patient outcomes varied according to the subtype of MI. Females was associated with a greater excess risk of 30-day mortality in STEMI (RR: 1.94; 95% CI: 1.71–2.21) compared with NSTEMI (RR: 1.12; 95% CI: 0.95–1.50; P interaction <0.001). Coronary revascularization reduced the incidence of death among women and men in the overall population. Despite this, the primary outcome of 30-day mortality remained higher in women than men with STEMI (RR: 2.38; 95% CI: 2.00–2.82) whereas it was comparable across sexes in patients with NSTEMI (RR: 1.21; 95% CI: 0.79–1.83; P interaction=0.002). Sex differences in mortality from STEMI were more significant in MIC compared with HIC (RRs: 2.30; 95% CI: 1.98–2.68 vs. 1.36; 95% CI: 1.05–1.75; P interaction <0.001). The sex gap in mortality was mitigated by the use of revascularization therapy (RRs: 2.05; 95% CI: 1.68–2.50 in MIC vs. 2.17; 95% CI: 1.48–3.18 in HIC; P interaction=0.40)
Conclusion
Women presenting with STEMI have worse early mortality rates than their male counterparts in both HIC and MIC even in patients undergoing revascularization. By contrast, sex differences are attenuated or no longer apparent in NSTEMI. With no information on the type of MI on admission, sex differences in early outcomes are difficult to be fully understood.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- E Cenko
- University of Bologna , Bologna , Italy
| | - M Bergami
- University of Bologna , Bologna , Italy
| | - J Yoon
- Google Cloud AI , Sunnyvale , United States of America
| | | | | | - C Gale
- University of Leeds , Leeds , United Kingdom
| | | | | | - M Vavlukis
- University Clinic of Cardiology , Skopje , North Macedonia
| | - S Kedev
- University Clinic of Cardiology , Skopje , North Macedonia
| | - D Milicic
- University of Zagreb School of Medicine , Zagreb , Croatia
| | - M Dorobantu
- University of Medicine and Pharmacy Carol Davila , Bucharest , Romania
| | - L Badimon
- Cardiovascular Research Center (CSIC-ICCC) , Barcelona , Spain
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Yoon J, Armstrong M, Cotton C, Mense M, Allaire N. 592 Ribosome profiling reveals distinct translation termination kinetics and efficiency between Fischer rat thyroid and human bronchial epidermal cells. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01282-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Allaire N, Yoon J, Armstrong M, Valley H, Macadino C, Sivachenko A, Conte J, Tabak B, Bihler H, Cheng Y, Coote K, Cotton C, Mense M. 663 Modulation of cystic fibrosis transmembrane conductance regulator intron 22 alternative polyadenylation use may have therapeutic potential for the treatment of certain 3′ cystic fibrosis transmembrane conductance regulator premature termination codon variants. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01353-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Kang JS, Kim S, Kang J, Joo H, Jang J, Jo K, Park S, Kim HI, Yoo SJ, Yoon J, Sung YE, Hatton TA. Surface Electrochemistry of Carbon Electrodes and Faradaic Reactions in Capacitive Deionization. Environ Sci Technol 2022; 56:12602-12612. [PMID: 35998306 DOI: 10.1021/acs.est.2c03913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Recent advances in electrochemical desalination techniques have paved way for utilization of saline water. In particular, capacitive deionization (CDI) enables removal of salts with high energy efficiency and economic feasibility, while its applicability has been challenged by degradation of carbon electrodes in long-term operations. Herein, we report a thorough investigation on the surface electrochemistry of carbon electrodes and Faradaic reactions that are responsible for stability issues of CDI systems. By using bare and membrane CDI (MCDI) as model systems, we identified various electrochemical reactions of carbon electrodes with water or oxygen, with thermodynamics and kinetics governed by the electrode potential and pH. As a result, a complete overview of the Faradaic reactions taking place in CDI was constructed by tracing the physicochemical changes occurring in CDI and MCDI systems.
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Affiliation(s)
- Jin Soo Kang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Department of Energy Systems Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Department of Energy Resources Engineering and Research Institute of Energy and Resources, Seoul National University, Seoul 08826, Republic of Korea
| | - Seoni Kim
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Jiho Kang
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Hwajoo Joo
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Junghwan Jang
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Kyusik Jo
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Subin Park
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Hyoung-Il Kim
- Department of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Sung Jong Yoo
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Yung-Eun Sung
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - T Alan Hatton
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Young K, Yoon J, Getachew E, Leung B, Nguyen N, Semenov Y, Theodosakis N. 206 Tetracyclines are associated with development of new hyperpigmentation in acne patients. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Getachew E, Yoon J, Young K, Leung B, Nguyen N, Mostaghimi A, Semenov Y, Theodosakis N. 674 Racial differences in melasma risk factors and treatment patterns. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Han S, Kim S, Kwak S, Lee C, Hong Jeong D, Kim C, Yoon J. Iridium-cobalt mixed oxide electrode for efficient chlorine evolution in dilute chloride solutions. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.01.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Avagyan S, Henninger JE, Mannherz WP, Mistry M, Yoon J, Yang S, Weber MC, Moore JL, Zon LI. Resistance to inflammation underlies enhanced fitness in clonal hematopoiesis. Science 2021; 374:768-772. [PMID: 34735227 DOI: 10.1126/science.aba9304] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- S Avagyan
- Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston, MA, USA
| | - J E Henninger
- Whitehead Institute for Biomedical Research, Cambridge, MA, USA
| | | | - M Mistry
- Harvard Chan Bioinformatics Core, Boston, MA, USA
| | - J Yoon
- Harvard Chan Bioinformatics Core, Boston, MA, USA
| | - S Yang
- Boston Children's Hospital, Boston, MA, USA
| | - M C Weber
- Boston Children's Hospital, Boston, MA, USA
| | - J L Moore
- Boston Children's Hospital, Boston, MA, USA
| | - L I Zon
- Boston Children's Hospital, Boston, MA, USA.,Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
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17
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Yoon J, Skach W. 612: Ribosome profiling reveals new complexities in ribosome-mediated mRNA decoding and stalling during CFTR protein synthesis. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02035-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Cenko E, Yoon J, Van Der Schaar M, Bergami M, Manfrini O, Vasiljevic Z, Zdravkovic M, Stankovic G, Vavlukis M, Kedev S, Milicic D, Badimon L, Bugiardini R. Acute heart failure: a mechanism underscoring sex differences in outcomes following acute coronary syndromes. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
It remains uncertain whether female sex is itself a strong risk factor for worse outcomes in acute coronary syndromes (ACS).
Purpose
We hypothesized that sex differences in vulnerability to heart failure after ACS may modify the association between sex and outcomes.
Methods
Data were drawn from the ISACS-Archives network of registries. The study population consisted of 87,812 patients with known time from symptom onset to hospital presentation. Participants were stratified by ACS subtypes: STEMI and NSTE-ACS Data on presenting heart failure symptoms were collected from medical record abstraction. Heart failure was categorized as Killip class >2. Time from symptom onset to hospital presentation was categorized as early (≤120 minutes) or late (>120 minutes). Primary outcome measure was 30-day mortality. Estimates were performed using a parametric balancing strategy by weighting and compared by test of interaction on the log scale.
Results
Among the study sample, 30922 (35.2%) patients were women. Patient outcomes varied according to subtype of ACS. The mortality rates at 30-days were significantly higher among women vs men in STEMI (RR:1.65; 95% CI: 1.56–1.73) compared with NSTE-ACS (RR:1.18; 95% CI: 1.09–1.28; P interaction <0.0001). Similarly, the women vs men RR of heart failure was higher in STEMI (RR: 1.24; 95% CI: 1.20–1.29) compared with NSTE-ACS (RR:1.02; 95% CI: 0.97–1.08; P interaction <0.0001). Sex difference in heart failure rates with STEMI presentation were independent (P<0.0001) of early (34.3% in women vs 24.2% in men) or late (35.5% in women vs 30.7% in men) hospital presentation. The same finding was not seen in NSTE-ACS patients. Overall, women presenting with heart failure was had higher 30-day mortality than did their male counterparts with heart failure (29.8% vs 25.5%; RR: 1.24; 95% CI: 1.17–1.31).
Conclusions
Women exhibit substantially more vulnerability to heart failure in STEMI than men: a greater percentage of women have heart failure, and women with heart failure have higher 30-day mortality than men with heart failure. This finding was not seen in NSTE-ACS. heart failure on initial assessment is a key feature to explain the sex gap in mortality after ACS.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- E Cenko
- University of Bologna, Department of Internal Medicine, Section of Cardiology, Bologna, Italy
| | - J Yoon
- Google Cloud AI, Sunnyvale, United States of America
| | - M Van Der Schaar
- University of Cambridge, Cambridge Centre for Artificial Intelligence in Medicine, Department of Applied Mathematics and Th, Cambridge, United Kingdom
| | - M Bergami
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine,, Bologna, Italy
| | - O Manfrini
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine,, Bologna, Italy
| | - Z Vasiljevic
- Clinical center of Serbia and School of medicine University of Belgrade, Belgrade, Serbia
| | - M Zdravkovic
- University Hospital Medical Center Bezanijska Kosa, Belgrade, Serbia
| | - G Stankovic
- Clinical center of Serbia and School of medicine University of Belgrade, Belgrade, Serbia
| | - M Vavlukis
- University Clinic of Cardiology, Skopje, North Macedonia
| | - S Kedev
- University Clinic of Cardiology, Skopje, North Macedonia
| | - D Milicic
- University of Zagreb School of Medicine, Zagreb, Croatia
| | - L Badimon
- Cardiovascular Research Center (CSIC-ICCC), Barcelona, Spain
| | - R Bugiardini
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine,, Bologna, Italy
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19
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Bergami M, Cenko E, Yoon J, Mendieta G, Kedev S, Zdravkovic M, Vasiljevic Z, Milicic D, Manfrini O, Van Der Schaar M, Gale CP, Badimon L, Bugiardini R. Statins for primary prevention among elderly men and women. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The debate about statins in primary prevention of cardiovascular (CV) disease is still alive, especially in old and very old adults.
Purpose
We undertook a propensity match-weighted cohort study to investigate whether statin treatment recommendations translate into improved cardiovascular (CV) outcomes in the current routine clinical care of the elderly.
Methods
We included in our analysis 5,619 people aged 65 years or older from the ISACS (International Survey of Acute Coronary Syndrome) Archives (NCT04008173) who presented to hospital with a first manifestation of CV disease. Participants were stratified as statin users versus nonusers and as old (65 to 75 years) versus very old (76 years or over) adults. We estimated the effects of statins on the most severe clinical manifestation of CV disease, namely ST segment elevation myocardial infarction (STEMI), using inverse probability of treatment weighting models. Estimates were compared by test of interaction on the log scale.
Results
The risk of STEMI was much lower in statin users than in nonusers in both patients aged 65 to 75 years (14.7% absolute risk reduction; relative risk [RR] ratio: 0.55, 95% CI 0.45 to 0.66) and those aged 76 years and older (13.3% absolute risk reduction; RR ratio: 0.58, 95% CI 0.46 to 0.72). Estimates were similar in patients with and without history of hypercholesterolemia (interaction test; p value= 0.2408). Proportional reductions in STEMI diminished with female sex in the old (p for interaction=0.002), but not in the very old age (p for interaction=0.26). We also observed a remarkable reduction in the risk of 30- day mortality from STEMI with statin therapy in both age groups (10.2% absolute risk reduction; RR ratio: 0.39; 95% CI 0.23 – 0.68 for patients aged 76 or over and 3.8% absolute risk reduction; RR ratio 0.37; 95% CI 0.17 – 0.82 for patients aged 65 to 75 years old; interaction test, p value=0.4570).
Conclusion
Preventive statin therapy in the elderly reduces the risk of STEMI with benefits in mortality from STEMI, irrespective of the presence of a history of hypercholesterolemia. This effect persists after the age of 76 years. Benefits are less pronounced in women.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Bergami
- University of Bologna, DIMES, Bologna, Italy
| | - E Cenko
- University of Bologna, DIMES, Bologna, Italy
| | - J Yoon
- University of California Los Angeles, Department of Electrical and Computer Engineering, Los Angeles, United States of America
| | - G Mendieta
- National Centre for Cardiovascular Research (CNIC), Madrid, Spain
| | - S Kedev
- University Clinic of Cardiology, Skopje, North Macedonia
| | - M Zdravkovic
- University Hospital Medical Center Bezanijska Kosa, Belgrade, Serbia
| | | | - D Milicic
- University Hospital Centre Zagreb, Department for Cardiovascular Diseases, Zagreb, Croatia
| | - O Manfrini
- University of Bologna, DIMES, Bologna, Italy
| | - M Van Der Schaar
- University of California Los Angeles, Department of Electrical and Computer Engineering, Los Angeles, United States of America
| | - C P Gale
- University of Leeds, Leeds Institute of Cardiovascular and Metabolic Medicine, Leeds, United Kingdom
| | - L Badimon
- Hospital de la Santa Creu i Sant Pau, Cardiovascular Research Program ICCC, IR-IIB Sant Pau, Barcelona, Spain
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20
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Hur SJ, Choi Y, Yoon J, Jang J, Shin NY, Ahn KJ, Kim BS. Intraindividual Comparison between the Contrast-Enhanced Golden-Angle Radial Sparse Parallel Sequence and the Conventional Fat-Suppressed Contrast-Enhanced T1-Weighted Spin-Echo Sequence for Head and Neck MRI. AJNR Am J Neuroradiol 2021; 42:2009-2015. [PMID: 34593379 DOI: 10.3174/ajnr.a7285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/25/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The golden-angle radial sparse parallel-volumetric interpolated breath-hold (GRASP-VIBE) sequence is a recently introduced imaging technique with high resolution. This study compared the image quality between conventional fat-suppressed T1-weighted TSE and GRASP-VIBE after gadolinium enhancement in the head and neck region. MATERIALS AND METHODS Data from 65 patients with clinical indications for head and neck MR imaging between September 2020 and January 2021 were retrospectively reviewed. Two radiologists assessed the overall image quality, overall artifacts, and image conspicuities in the oropharynx, hypopharynx, and cervical lymph nodes according to 5-point scores (best score: 5). Interobserver agreement was assessed using weighted κ statistics. The SNR and contrast-to-noise ratio were calculated and compared between the 2 sequences using a paired Wilcoxon signed rank test. RESULTS The analysis included 52 patients (mean age, 60 [SD, 14 ] years; male, 71.2% [37/52]) who were mostly diagnosed with head and neck malignancies (94.3% [50/52]). κ statistics ranged from slight agreement in cervical lymph node conspicuity (κ = 0.18) to substantial agreement in oropharyngeal mucosal conspicuity (κ = 0.80) (κ range, 0.18-0.80). Moreover, GRASP-VIBE demonstrated significantly higher mean scores in overall image quality (4.68 [SD, 0.41] versus 3.66 [SD, 0.73]), artifacts (4.47 [SD, 0.48] versus 3.58 [SD, 0.71]), oropharyngeal mucosal conspicuity (4.85 [SD, 0.41] versus 4.11 [SD, 0.79]), hypopharyngeal mucosal conspicuity (4.84 [SD, 0.34] versus 3.58 [SD, 0.81]), and cervical lymph node conspicuity (4.79 [SD, 0.32] versus 4.08 [SD, 0.64]) than fat-suppressed T1-weighted TSE (all, P < .001). Furthermore, GRASP-VIBE demonstrated a higher SNR (22.8 [SD, 11.5] versus 11.3 [SD, 5.6], P < .001) and contrast-to-noise ratio (4.7 [SD, 5.4] versus 2.3 [SD, 2.7], P = .059) than fat-suppressed T1-weighted TSE. CONCLUSIONS GRASP-VIBE provided better image quality with fewer artifacts than conventional fat-suppressed T1-weighted TSE for the head and neck regions.
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Affiliation(s)
- S-J Hur
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y Choi
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Yoon
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Jang
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - N-Y Shin
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - K-J Ahn
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - B-S Kim
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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21
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Kim S, Lee T, Han S, Lee C, Kim C, Yoon J. Ir0.11Fe0.25O0.64 as a highly efficient electrode for electrochlorination in dilute chloride solutions. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Kim J, Kim DH, Jee H, Hwang J, Yoon J. Type B valvular and supravalvular pulmonic stenosis with aberrant pre-pulmonic right coronary artery diagnosed by non-electrocardiography-gated, multislice computed tomography in a Boston terrier. J Vet Cardiol 2021; 38:12-17. [PMID: 34689048 DOI: 10.1016/j.jvc.2021.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022]
Abstract
Pulmonic stenosis (PS) is a common congenital heart disease in dogs. It may be associated with an aberrant coronary artery (CA) in brachycephalic breeds. If present, a CA anomaly must be identified before pulmonic valvuloplasty. A 1.7-year-old Boston terrier was referred for a grade V/VI systolic heart murmur and exercise intolerance. Echocardiography revealed combined type B valvular and supravalvular PS; an aberrant CA was also suspected. Non-electrocardiography (ECG)-gated, 160-multislice computed tomographic angiography (CTA) confirmed severe right ventricular wall hypertrophy, a hypoplastic pulmonic valve annulus, and severe supravalvular PS with a marked main pulmonary artery bulge; a single left coronary ostium with an anomalous pre-pulmonic right CA was also identified. Surgical correction with pulmonic valvuloplasty and pulmonary artery patch angioplasty under cardiopulmonary bypass was planned. The patient died intraoperatively due to profound hypotension after weaning from extracorporeal circulation. However, this is the first case report in which type B valvular and supravalvular PS with an aberrant pre-pulmonic right CA was diagnosed by non-ECG-gated, 160-multislice CTA in a Boston terrier, showing a similar level of image quality to ECG-gated CTA. Thus, in PS cases, high-slice CTA may be helpful to determine if CA anomalies are present and to establish a therapeutic plan.
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Affiliation(s)
- J Kim
- Helix Animal Medical Center, Seoul, 06546, South Korea; College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, South Korea
| | - D-H Kim
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, South Korea
| | - H Jee
- Helix Animal Medical Center, Seoul, 06546, South Korea
| | - J Hwang
- Helix Animal Medical Center, Seoul, 06546, South Korea
| | - J Yoon
- College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, South Korea.
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23
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Pham K, Wu Y, Turett G, Prasad N, Yung L, Rodriguez GD, Segal-Maurer S, Urban C, Yoon J. Edwardsiella tarda, a rare human pathogen isolated from a perihepatic abscess: Implications of transient versus long term colonization of the gastrointestinal tract. IDCases 2021; 26:e01283. [PMID: 34527514 PMCID: PMC8433271 DOI: 10.1016/j.idcr.2021.e01283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/05/2021] [Accepted: 09/05/2021] [Indexed: 11/25/2022] Open
Abstract
Although gastroenteritis is the most commonly described manifestation of Edwardsiella tarda infection, the pathogenesis and transient or long-term colonization of the gastrointestinal tract of this organism in human disease is not clear. We describe a rare manifestation of E. tarda infection in a perihepatic abscess in the setting of a patient with perforated cholecystitis and its successful eradication following antibiotic treatment.
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Affiliation(s)
- K Pham
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA
| | - Y Wu
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA
| | - G Turett
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA
| | - N Prasad
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA
| | - L Yung
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA
| | - G D Rodriguez
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,Columbia University School of Nursing, Columbia University, NY 10032, USA
| | - S Segal-Maurer
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,Weill Cornell Medicine, Cornell University, NY 10065, USA
| | - C Urban
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,Weill Cornell Medicine, Cornell University, NY 10065, USA
| | - J Yoon
- Department of Medicine, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA.,The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY 11355, USA
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24
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Lee KW, Park J, Oh DY, Kim S, Sabanathan D, Kim T, Kim M, Yoon J, Lee H, Park S, Paeng K, Ock CY. 977P Interim results of phase I dose escalation study of YBL-006: A novel anti-PD-1 monoclonal antibody in advanced solid tumors. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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25
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Kim S, Kang JS, Kim S, Kang S, Sung YE, Cho K, Yoon J. Electrochemical Regeneration of Free Chlorine Treated Nickel Oxide Catalysts for Oxidation of Aqueous Pollutants. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.03.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Lee W, Lee T, Kim S, Bae S, Yoon J, Cho K. Descriptive Role of Pt/PtO x Ratio on the Selective Chlorine Evolution Reaction under Polarity Reversal as Studied by Scanning Electrochemical Microscopy. ACS Appl Mater Interfaces 2021; 13:34093-34101. [PMID: 34270208 DOI: 10.1021/acsami.1c06187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study investigated competing chlorine evolution reaction (ClER) and oxygen evolution reaction (OER) on Pt electrodes under variable polarity reversal intervals (±16.7 mA cm-2, 30-600 s) in the context of distinctive roles of Pt(0) and PtOx on the surface in dilute (0.1 M) NaCl solutions. The substrate generation/tip collection mode of scanning electrochemical microscopy (SECM) quantified the current efficiency (CE) of ClER with a large tip-to-substrate distance (>500 μm) to avoid intervention of bubbles and spatial variations. Surface interrogation SECM using [Ru(NH3)6]2+/3+ coupled with X-ray photoelectron spectroscopy (XPS) identified the Pt4+-enriched surface of PtOx with a bilayer structure to give more efficient regeneration of Pt(0) under the shorter reversal interval. The in situ SECM complemented bulk electrolysis and XPS to demonstrate that ClER on Pt(0) and OER on PtOx primarily determine the CE of ClER, in agreement with a kinetic model. The descriptive role of surface Pt/PtOx ratio rationalized the enhanced selectivity for ClER upon the polarity switching, being independent on a scaling relationship. The current reversal (not allowed to IrO2 electrodes) also alleviated calcareous scale deposit in the electrolyte with hardness.
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Affiliation(s)
- Woonghee Lee
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Teayoung Lee
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seok Kim
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Sungho Bae
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Korea Environment Institute, 370 Sicheong-daero, Sejong 30147, Republic of Korea
| | - Kangwoo Cho
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University International Campus, Incheon 21983, Republic of Korea
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27
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Thompson LL, Yoon J, Chang MS, Polyakov NJ, Pan CX, Chen ST, Wei EX, Charrow AP. Advanced care planning, code status and end-of-life care in patients with bullous pemphigoid. Br J Dermatol 2021; 185:1246-1247. [PMID: 34184254 DOI: 10.1111/bjd.20606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 11/28/2022]
Affiliation(s)
- L L Thompson
- Department of Dermatology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - J Yoon
- Department of Dermatology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - M S Chang
- Department of Dermatology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - N J Polyakov
- Department of Dermatology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - C X Pan
- Department of Dermatology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - S T Chen
- Department of Dermatology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - E X Wei
- Department of Dermatology, Brigham and Women's Hospital & Harvard Medical School, Boston, MA, USA
| | - A P Charrow
- Department of Dermatology, Brigham and Women's Hospital & Harvard Medical School, Boston, MA, USA
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28
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Thompson L, Li E, Krasnow N, Chang M, Said J, Molina G, Polyakov N, Yoon J, Dee E, Huang K, Blum A, Kuchroo J, Hinton A, Reynolds K, Chen S. Effect of dermatological consultation on survival in patients with checkpoint inhibitor‐associated cutaneous toxicity. Br J Dermatol 2021; 185:627-635. [DOI: 10.1111/bjd.20074] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 02/06/2023]
Affiliation(s)
- L.L. Thompson
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - E.B. Li
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - N.A. Krasnow
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - M.S. Chang
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - J.T. Said
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - G.E. Molina
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - N.J. Polyakov
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - J. Yoon
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - E.C. Dee
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - K. Huang
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - A.E. Blum
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - J.R. Kuchroo
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - A.N. Hinton
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - K.L. Reynolds
- Department of Medicine Division of Hematology and Oncology Massachusetts General Hospital Cancer Center and Harvard Medical School Boston MA USA
| | - S.T. Chen
- Department of Dermatology Massachusetts General Hospital and Harvard Medical School Boston MA USA
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29
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Jeon Y, Min G, Park S, Park S, Yoon J, Lee S, Cho B, Eom K, Kim Y, Min C, Lee J, Cho S. Efficacy of ex vivo purging with CD34 positive selection during autologous stem cell transplantation in peripheral T-cell lymphomas. Cytotherapy 2021. [DOI: 10.1016/s1465324921003807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Khan S, Urban C, Singh V, Liu D, Segal-Maurer S, Parmar Y, Yoon J. Novel double beta-lactam therapy for Granulicatella adiacens infective endocarditis. IDCases 2021; 24:e01082. [PMID: 33850724 PMCID: PMC8039821 DOI: 10.1016/j.idcr.2021.e01082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 03/19/2021] [Accepted: 03/19/2021] [Indexed: 11/18/2022] Open
Abstract
Granulicatella adiacens, a nutritionally variant streptococci (NVS) is a well described organism associated with endocarditis. Previously communicated cases have documented the use of double beta-lactam therapy with ampicillin and ceftriaxone to treat patients with infective endocarditis due to Enterococcus faecalis and Streptocossus pneumoniae. We describe the first case of Granulicatella adiacens infective endocarditis in a patient successfully treated with the combination of intravenous ampicillin and ceftriaxone and document their synergistic activity.
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Affiliation(s)
- S. Khan
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
| | - C. Urban
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
- Weill Cornell Medical College, Cornell University, NY, 10065, USA
- Corresponding author at: The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA.
| | - V. Singh
- Department of Pathology, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
| | - D. Liu
- Department of Pathology, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
| | - S. Segal-Maurer
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
- Weill Cornell Medical College, Cornell University, NY, 10065, USA
| | - Y. Parmar
- Department of Cardiology, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
| | - J. Yoon
- The Dr. James J. Rahal, Jr. Division of Infectious Diseases, NewYork-Presbyterian Queens, 56-45 Main Street, Flushing, NY, 11355, USA
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Lee T, Lee W, Kim S, Lee C, Cho K, Kim C, Yoon J. High chlorine evolution performance of electrochemically reduced TiO 2 nanotube array coated with a thin RuO 2 layer by the self-synthetic method. RSC Adv 2021; 11:12107-12116. [PMID: 35423728 PMCID: PMC8696594 DOI: 10.1039/d0ra09623g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/15/2021] [Indexed: 11/21/2022] Open
Abstract
Recently, reduced TiO2 nanotube arrays via electrochemical self-doping (r-TiO2) are emerging as a good alternative to conventional dimensionally stable anodes (DSAs) due to their comparable performance and low-cost. However, compared with conventional DSAs, they suffer from poor stability, low current efficiency, and high energy consumption. Therefore, this study aims to advance the electrochemical performances in the chlorine evolution of r-TiO2 with a thin RuO2 layer coating on the nanotube structure (RuO2@r-TiO2). The RuO2 thin layer was successfully coated on the surface of r-TiO2. This was accomplished with a self-synthesized layer of ruthenium precursor originating from a spontaneous redox reaction between Ti3+ and metal ions on the r-TiO2 surface and thermal treatment. The thickness of the thin RuO2 layer was approximately 30 nm on the nanotube surface of RuO2@r-TiO2 without severe pore blocking. In chlorine production, RuO2@r-TiO2 exhibited higher current efficiency (∼81.0%) and lower energy consumption (∼3.0 W h g-1) than the r-TiO2 (current efficiency of ∼64.7% of and energy consumption of ∼5.2 W h g-1). In addition, the stability (ca. 22 h) was around 20-fold enhancement in RuO2@r-TiO2 compared with r-TiO2 (ca. 1.2 h). The results suggest a new route to provide a thin layer coating on r-TiO2 and to synthesize a high performance oxidant-generating anode.
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Affiliation(s)
- Teayoung Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes (ICP), Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Woonghee Lee
- Division of Environmental Science & Engineering, POSTECH 77 Chungam-ro, Nam-gu Pohang 37673 Republic of Korea
| | - Seongsoo Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes (ICP), Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Changha Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes (ICP), Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Kangwoo Cho
- Division of Environmental Science & Engineering, POSTECH 77 Chungam-ro, Nam-gu Pohang 37673 Republic of Korea
| | - Choonsoo Kim
- Department of Environmental Engineering, Institute of Energy/Environment Convergence Technologies, Kongju National University 1223-24, Cheonan-daero Cheonan-si 31080 Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, Institute of Chemical Processes (ICP), Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
- Korea Environment Institute 370 Sicheong-daero Sejong-si 30147 Republic of Korea
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32
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Bui TH, Hong SP, Kim C, Yoon J. Performance analysis of hydrated Zr(IV) oxide nanoparticle-impregnated anion exchange resin for selective phosphate removal. J Colloid Interface Sci 2020; 586:741-747. [PMID: 33198977 DOI: 10.1016/j.jcis.2020.10.143] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 08/21/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 12/18/2022]
Abstract
The superior removal selectivity of hydrated zirconium oxide nanoparticle-impregnated porous anion exchange resin (ZAE) highlights its use as phosphate removal adsorbent. However, most research examines selective phosphate removal performance using randomly determined single content of hydrated zirconium oxide, and thus the use of the ZAE in real applications remains limited. Therefore, this study aimed to investigate the selective phosphate removal performance of ZAE with different content of hydrated zirconium oxide nanoparticle (HZO NP, represented by zirconium content) by considering various conditions. A molybdate intermediate method was devised to fabricate ZAE with high loaded HZO by weakening the Donnan exclusion to HZO precursors produced from the fixed positively charged host. Consequently, the resultant ZAE was characterized by 17.8 wt% of zirconium. ZAE exhibited an increased selectivity to phosphate against competing ions in the synthetic and simulated real water matrices for both batch and fixed-bed modes as the zirconium content of ZAE increased. High performance was retained, and regeneration led to possible reusability. The linear correlation between selective phosphate removal performances and zirconium content indicates that the zirconium content is a fundamental factor determining the ZAE phosphate adsorption removal. The HZO NPs within ZAE slow adsorption kinetics by blocking AE pores and provide specific adsorption sites for phosphate removal by inner-sphere complexation.
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Affiliation(s)
- Trung Huu Bui
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City, Viet Nam; School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul 08826, Republic of Korea
| | - Sung Pil Hong
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul 08826, Republic of Korea
| | - Choonsoo Kim
- Department of Environmental Engineering and Institute of Energy/Environment Convergence Technologies, Kongju National University, 1223-24, Cheonan-daero, Cheonan-si 31080, Republic of Korea.
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul 08826, Republic of Korea; Korea Environment Institute, 370 Sicheong-daero, Sejong-si 30147, Republic of Korea.
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33
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Mall EM, Rotte N, Yoon J, Sandhowe-Klaverkamp R, Röpke A, Wistuba J, Hübner K, Schöler HR, Schlatt S. A novel xeno-organoid approach: exploring the crosstalk between human iPSC-derived PGC-like and rat testicular cells. Mol Hum Reprod 2020; 26:879-893. [PMID: 33049038 DOI: 10.1093/molehr/gaaa067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 09/11/2020] [Indexed: 02/06/2023] Open
Abstract
Specification of germ cell-like cells from induced pluripotent stem cells has become a clinically relevant tool for research. Research on initial embryonic processes is often limited by the access to foetal tissue, and in humans, the molecular events resulting in primordial germ cell (PGC) specification and sex determination remain to be elucidated. A deeper understanding of the underlying processes is crucial to describe pathomechanisms leading to impaired reproductive function. Several protocols have been established for the specification of human pluripotent stem cell towards early PGC-like cells (PGCLC), currently representing the best model to mimic early human germline developmental processes in vitro. Further sex determination towards the male lineage depends on somatic gonadal cells providing the necessary molecular cues. By establishing a culture system characterized by the re-organization of somatic cells from postnatal rat testes into cord-like structures and optimizing efficient PGCLC specification protocols, we facilitated the co-culture of human germ cell-like cells within a surrogate testicular microenvironment. Specified conditions allowed the survival of rat somatic testicular and human PGCLCs for 14 days. Human cells maintained the characteristic expression of octamer-binding transcription factor 4, SRY-box transcription factor 17, and transcription factor AP-2 gamma and were recovered from the xeno-organoids by cell sorting. This novel xeno-organoid approach will allow the in vitro exploration of early sex determination of human PGCLCs.
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Affiliation(s)
- E M Mall
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - N Rotte
- Centre of Reproductive Medicine and Andrology, University of Münster, Münster, Germany.,Institute of Reproductive Genetics, University of Münster, Münster, Germany
| | - J Yoon
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - R Sandhowe-Klaverkamp
- Centre of Reproductive Medicine and Andrology, University of Münster, Münster, Germany
| | - A Röpke
- Institute of Human Genetics, University of Münster, Münster, Germany
| | - J Wistuba
- Centre of Reproductive Medicine and Andrology, University of Münster, Münster, Germany
| | - K Hübner
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - H R Schöler
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany.,Medical Faculty, University of Münster, Münster, Germany
| | - S Schlatt
- Centre of Reproductive Medicine and Andrology, University of Münster, Münster, Germany
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34
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Yoon J, Barton MJ, St John JA, Ekberg JAK, Khan A, Redmond M. Anterior skull base olfactory tumours, which is what? A case report and review. J Clin Neurosci 2020; 81:1-5. [PMID: 33222894 DOI: 10.1016/j.jocn.2020.09.008] [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: 12/26/2019] [Revised: 07/29/2020] [Accepted: 09/06/2020] [Indexed: 11/17/2022]
Abstract
Intracranial schwannomas not originating from cranial nerves are rare. In this paper, we report a case of a 50-year-old male who presented with worsening headaches, diplopia and nausea over two years. Radiological imaging revealed a large tumour arising from the olfactory groove region with a preoperative diagnosis of olfactory groove meningioma (OGM). Intraoperatively, the tumour originated from the region of the attachment of the falx to the crista galli. The patient recovered without complication and histopathology reported an unexpected diagnosis of WHO Grade 1 schwannoma. However, as olfactory groove schwannomas (OGSs) cannot be distinguished from olfactory ensheathing cell tumours (OECTs), it is possible that the tumour could have been either an OGS or an OECT. Distinguishing between OGSs, OECTs and OGMs preoperatively is difficult. OGMs exhibit distinct histopathological features from OGSs/OECTs, however, OGSs and OECTs currently cannot be distinguished from each other. Here, we review the literature to discuss the differentiating features and cellular origins of these three tumours.
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Affiliation(s)
- J Yoon
- Neurosurgery Department, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - M J Barton
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia; School of Nursing and Midwifery, Griffith University, Nathan, QLD, Australia
| | - J A St John
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia; Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland, Australia
| | - J A K Ekberg
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia; Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland, Australia
| | - A Khan
- Anatomical Pathology, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - M Redmond
- Neurosurgery Department, Royal Darwin Hospital, Darwin, Northern Territory, Australia; Kenneth G Jamieson Department of Neurosurgery, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.
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35
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Thompson LL, Chang MS, McCormack L, Polyakov N, Yoon J, Song H, Huang JT, Chen ST. Patterns of cutaneous immune-related adverse events in adults and children with advanced sarcoma: a retrospective cohort study. Br J Dermatol 2020; 184:363-365. [PMID: 32894776 DOI: 10.1111/bjd.19540] [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: 05/22/2020] [Revised: 08/30/2020] [Accepted: 08/31/2020] [Indexed: 11/27/2022]
Affiliation(s)
- L L Thompson
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - M S Chang
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - L McCormack
- Department of Dermatology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA.,University of Massachusetts Medical School, Worcester, MA, USA
| | - N Polyakov
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - J Yoon
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - H Song
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.,Department of Dermatology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA.,Harvard Combined Dermatology Residency Program, Harvard Medical School, Boston, MA, USA
| | - J T Huang
- Department of Dermatology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA.,Department of Dermatology, Harvard Medical School, Boston, MA, USA
| | - S T Chen
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.,Department of Dermatology, Harvard Medical School, Boston, MA, USA
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36
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Shin M, Hwang S, Yoon J, Chung E, Kim T. PAM3 Cost-Effectiveness of Kinesiology Taping for Patients with Mild to Moderate Ankle Sprain. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Shin M, Hwang S, Yoon J, Chung E, Kim T. PAM4 Cost-Effectiveness of Dangguixu-SAN for Patients with Mild to Moderate Ankle Sprain. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Bui L, Yoon J, Harvey M, Luck J, Branscum A. Oregon Experiment with Medicaid Accountable Care and Pediatric Preventive Care Utilization Among Infants. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] Open
Affiliation(s)
- L. Bui
- The University of California Berkeley, Berkeley CA United States
| | - J. Yoon
- Oregon State Univeristy Corvallis OR United States
| | - M. Harvey
- Oregon State Univeristy Corvallis OR United States
| | - J. Luck
- Oregon State Univeristy Corvallis OR United States
| | - A. Branscum
- Oregon State Univeristy Corvallis OR United States
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39
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Wong E, Guo R, Yoon J, Chang E. Impact of VHA’s Primary Intensive Care Management Program on Dual System Use. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13437] [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: 11/28/2022] Open
Affiliation(s)
- E. Wong
- University of Washington Seattle WA United States
- VA Puget Sound Health Care System Seattle WA United States
| | - R. Guo
- VA Greater Los Angeles Health Care System Los Angeles CA United States
- University of California Los Angeles Los Angeles CA United States
| | - J. Yoon
- Department of Veterans Affairs Menlo Park CA United States
| | - E. Chang
- VA Greater Los Angeles Health Care System Los Angeles CA United States
- University of California Los Angeles Los Angeles CA United States
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40
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Park G, Hong SP, Lee C, Lee J, Yoon J. Selective fluoride removal in capacitive deionization by reduced graphene oxide/hydroxyapatite composite electrode. J Colloid Interface Sci 2020; 581:396-402. [PMID: 32771748 DOI: 10.1016/j.jcis.2020.07.108] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 05/04/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 10/23/2022]
Abstract
Capacitive deionization (CDI) is an emerging desalination technology with an environmental-friendly operation and energy-efficient properties. However, activated carbon (AC) used for CDI electrode does not have a significant preference toward anions, leading to unnecessary energy consumption for treating fluoridated water. Hence, we achieved selective fluoride removal in CDI system using a reduced graphene oxide/hydroxyapatite composite (rGO/HA), a novel fluoride selective electrode material. The results showed that the rGO/HA electrode has 4.9 times higher fluoride removal capacity than the AC electrode from a ternary solution consisting of fluoride, chloride, and nitrate ions. The fluoride removal capacity increased when the adequate voltage was applied. Furthermore, the rGO/HA electrode exhibited stability and reusability without significant capacity loss even after 50-cycle operation, maintaining about 0.21 mmol g-1 of fluoride removal capacity and approximately 96% of regeneration efficiency. Thus, this study suggests a novel electrode material for effective and selective fluoride removal in the CDI system.
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Affiliation(s)
- Gyuleen Park
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process (ICP), Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sung Pil Hong
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process (ICP), Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Changha Lee
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process (ICP), Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jaehan Lee
- Department of Biological and Chemical Engineering, College of Science and Technology, Hongik University, 2639 Sejong-ro, Sejong-si 30016, Republic of Korea.
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process (ICP), Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea; Korea Environment Institute, 370 Sicheong-daero, Sejong-si 30147, Republic of Korea.
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41
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Kim S, Kang JS, Joo H, Sung YE, Yoon J. Understanding the Behaviors of λ-MnO 2 in Electrochemical Lithium Recovery: Key Limiting Factors and a Route to the Enhanced Performance. Environ Sci Technol 2020; 54:9044-9051. [PMID: 32545954 DOI: 10.1021/acs.est.9b07646] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recently developed electrochemical lithium recovery systems, whose operation principle mimics that of lithium-ion battery, enable selective recovery of lithium from source waters with a wide range of lithium ions (Li+) concentrations; however, physicochemical behaviors of the key component-Li+-selective electrode-in realistic operation conditions have been poorly understood. Herein, we report an investigation on a λ-MnO2 electrode during the electrochemical lithium recovery process with regards to the Li+ concentration in source water and operation rate of the system. Three distinctive stages of λ-MnO2 originating from different limiting factors for lithium recovery are defined with regard to the rate of Li+ supply from the electrolyte: depleted, transition, and saturated regions. By characterization of λ-MnO2 at different stages using diverse X-ray techniques, the importance of Li+ concentration in the vicinity of the electrode surface is revealed. On the basis of this understanding, increasing the density of the electrode/electrolyte interface is suggested as a realistic and general route to enhance the overall lithium recovery performance and is experimentally corroborated at a wide range of operation environments.
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Affiliation(s)
- Seoni Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Soo Kang
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Hwajoo Joo
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Yung-Eun Sung
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
- Korea Environment Institute (KEI), Sejong 30147, Republic of Korea
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42
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Yoon J, Lee H, Lim JW, Kim H. Inhibitory effect of alpha-lipoic acid on mitochondrial dysfunction and interleukin-8 expression in interleukin-1beta-stimulated ataxia teleangiectasia fibroblasts. J Physiol Pharmacol 2020; 71. [PMID: 32554850 DOI: 10.26402/jpp.2020.1.15] [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] [Received: 01/14/2020] [Accepted: 02/28/2020] [Indexed: 11/03/2022]
Abstract
Ataxia telangiectasia (A-T) is an inherited neurodegenerative disease caused by mutation in the ataxia telangiectasia mutated (ATM) gene, leading to loss of function in the encoded protein ATM. Because ATM functions to reduce oxidative stress by up-regulating antioxidant enzymes, oxidative stress is a prevalent A-T phenotype and a mediator of the inflammation that drives A-T pathology. Reactive oxygen species (ROS) levels and the expression of pro-inflammatory cytokine interleukin-8 (IL-8) were higher in A-T cells than in normal cells. ROS are related to mitochondrial dysfunction and activation of nuclear factor kappa B (NF-κB) to induce IL-8 expression. Alpha-lipoic acid (α-LA), a naturally occurring thiol compound, shows an antioxidant effect in various cells. This study is aimed to determine if α-LA confers protection against NF-κB activation, IL-8 expression, and mitochondrial dysfunction in A-T cells which are exposed to the inflammatory cytokine IL-1β. A-T fibroblasts were treated with or without α-LA. The levels of intracellular and mitochondrial ROS, mRNA and protein levels of IL-8, mitochondrial membrane potential (MMP), ATP levels, and DNA binding activity of NF-κB were determined. As a result, IL-1β increased NF-κB activation, IL-8 expression, intracellular and mitochondrial ROS levels, but decreased MMP and ATP level in A-T cells. Pretreatment of A-T cells with α-LA inhibited IL-1β-induced activation of NF-κB, IL-8 expression, and mitochondrial dysfunction by reducing ROS levels. In conclusion, supplementation with α-LA may be beneficial for reducing the oxidative stress-induced mitochondrial dysfunction and IL-8 production associated with A-T.
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Affiliation(s)
- J Yoon
- Department of Food and Nutrition, Brain Krea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, South Korea
| | - H Lee
- Department of Food and Nutrition, Brain Krea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, South Korea
| | - J W Lim
- Department of Food and Nutrition, Brain Krea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, South Korea
| | - H Kim
- Department of Food and Nutrition, Brain Krea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, South Korea.
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Mumtaz S, Li ZY, Yoon J, Yuvienco C. AB1121 IMPLEMENTING HIGH VALUE CARE IN INPATIENT ANTINUCLEAR ANTIBODY TESTING. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Antinuclear Antibody (ANA) testing forms the basis on which many rheumatological diseases are subsequently diagnosed. ANA testing quantifies the dilution of plasma to produce the titer and staining pattern and this can be a part of an ANA order set that reflexively cascades to sub-serology if positive. Studies have shown that a low titer ANA may potentially translate into an erroneous diagnosis: if one estimates a 1 percent prevalence of ANA associated disease in the general population then 30% of those individuals would have a false positive result of ANA detected at 1:40 titer [1]. We theorized that there is no need for several methods to coexist within a single inpatient hospital setting especially since diagnostic value of staining patterns alone is limited.Objectives:To compare the utility and yield of “ANA screening reflex to profile” (ARP) and “ANA reflex to titer” (ART) order sets in the inpatient setting of a community tertiary care hospital. We aim to identify the appropriateness of the ANA testing ordered including cost-effectiveness of ordering ARP over ART in order to implement the identified quality measures towards improving utilization of ANA testing.Methods:We identified all inpatient ANA reflex testing orders performed at Community Regional Medical Center, Fresno, California completed between 11/2018 till 07/2019. This included ART and ARP orders with 6 sub-serologies: SSA, SSB, dsDNA, Smith, Scl-70 and U1RNP. A Health Information Management report was generated which included patient’s age, gender, length of hospital stay, dates of testing ordered, principal diagnosis and type of ANA testing ordered. Descriptive statistics were computed and analyzed.Results:We reviewed a total of 1,012 ANA lab orders performed between 11/01/2018 until 07/30/2019 performed on 700 patients. According to the laboratory standard using Immunofluorescence Assay, an ANA titer starting from 1:40 is reported as positive. Out of the 1,012 tests, 334 tests were positive i.e. 33%. The ART order by itself contributed to 29.9% of the positive testing while ARP formed 70% of the positive testing. 56 of the 910 ARP (6%) performed had one or more sub-serology antibody positive while in 178 ARP orders (20%) only the ANA titer was positive with negative serology. The most common sub-serology antibody noted positive was dsDNA forming 54% of the positive serology results. Multiple testing was noted with 218 orders of ARP and ART being ordered on the same patient within the same week, which shows 21.5% of ANA lab orders were repetitive. Length of stay was noted to be more than 3 days for 89% of the patients who had repetitive testing, majority of those tests (99%) on the same day by the same medical provider. It cost $5.0 for an ART order that resulted negative and $5.0 for an ARP panel that resulted negative. It cost $10.0 for those patients who had both ART and ARP ordered with negative results. A positive ART result added $12.0 additional to the cost of each positive ANA profile ($67.36) when both tests were ordered together.Conclusion:Our study findings reflect the need for using higher yield ANA testing that has been standardized. It demonstrated that physicians ordering the testing were not familiar with the ART vs. ARP, and the laboratory orders needed to be re-structured. We removed the ART from the inpatient Electronic Medical Record i.e. Epic system so that only the ARP order remained. This would prevent repetitive testing and reduce healthcare costs through reduction by at least $12.0 per positive ANA result and may also translate into reduced length of hospital stay. We were able to add Centromere Antibody (Ab) to the ANA profile sub serologies to standardize it further as it is an important part of Scleroderma diagnosis.References:[1]Range of antinuclear antibodies in “healthy” individuals. AU, Tan EM, et al. Arthritis Rheum. 1997; 40(9):1601Disclosure of Interests:None declared
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Lee N, Seo J, Park H, Yoon J. Diagnosis and successful percutaneous ultrasound-guided aspiration treatment of multiple bilomas in a dog. J Small Anim Pract 2020; 61:321-322. [PMID: 32166748 DOI: 10.1111/jsap.13133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 11/30/2022]
Affiliation(s)
- N Lee
- College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.,Time Animal Medical Center, 57, Dunsan-ro, Seo-gu, Daejeon, 35233, Republic of Korea
| | - J Seo
- Time Animal Medical Center, 57, Dunsan-ro, Seo-gu, Daejeon, 35233, Republic of Korea
| | - H Park
- Time Animal Medical Center, 57, Dunsan-ro, Seo-gu, Daejeon, 35233, Republic of Korea
| | - J Yoon
- College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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Zhan C, Yoon J, Baghai Kermani A, Gupta A, Moore W. Abstract No. 587 Safety and efficacy of computed tomography–guided percutaneous cryoneurolysis for chronic intercostal pain syndrome. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Hong SP, Yoon H, Lee J, Kim C, Kim S, Lee J, Lee C, Yoon J. Selective phosphate removal using layered double hydroxide/reduced graphene oxide (LDH/rGO) composite electrode in capacitive deionization. J Colloid Interface Sci 2019; 564:1-7. [PMID: 31896423 DOI: 10.1016/j.jcis.2019.12.068] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/07/2019] [Accepted: 12/16/2019] [Indexed: 11/27/2022]
Abstract
Phosphate removal is a critical issue in water treatment because excess levels of phosphate can cause severe eutrophication. Capacitive deionization (CDI), which has several advantages, such as simple, eco-friendly, and energy efficient operations, has gained attention as a potential alternative over conventional phosphate removal technologies like activated sludge, chemical precipitation, and adsorption processes. However, CDI suffers from a lack of selectivity for phosphate, resulting from non-selective anion removal of positively biased electrodes. Herein, the layered double hydroxide/reduced graphene oxide (LDH/rGO) composite electrode in the CDI process was examined for selective phosphate removal. LDH/rGO showed the selective phosphate removal performance with sustained phosphate removal efficiency even in the presence of excess chloride. In addition, the selective phosphate removal in the CDI process with the LDH/rGO was successfully demonstrated in the simulated water, fabricated by adding a significantly low concentration of phosphate (0.4 mg∙L-1) into real river water matrix (Han River, Seoul, Korea). This result was explained by the high electrochemical selectivity of the LDH/rGO for phosphate.
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Affiliation(s)
- Sung Pil Hong
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Hansun Yoon
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Jaehan Lee
- Department of Biological and Chemical Engineering, College of Science and Technology, Hongik University, Sejong-si 30016, Republic of Korea
| | - Choonsoo Kim
- Department of Environmental Engineering and Institute of Energy/Environment Convergence Technologies, Kongju National University, 1223-24, Cheonan-daero, Cheonan-si 31080, Republic of Korea
| | - Seoni Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Jiho Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Changha Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering and Institute of Chemical Processes (ICP), Seoul National University, Seoul 08826, Republic of Korea; Korea Environment Institute, 370 Sicheong-daero, Sejong-si 30147,Republic of Korea.
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Bui TH, Hong SP, Yoon J. Enhanced selective removal of arsenic(V) using a hybrid nanoscale zirconium molybdate embedded anion exchange resin. Environ Sci Pollut Res Int 2019; 26:37046-37053. [PMID: 31745776 DOI: 10.1007/s11356-019-06864-7] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
Selective removal of trace arsenic is crucial for obtaining safe drinking water. Here, the selective adsorptive performance of arsenate (As(V)) on a hybrid ZMAE (nanoscale zirconium molybdate embedded a macroporous anion exchange resin) was examined. It was found that the As(V) adsorption efficiency of ZMAE was almost retained in the presence of competing ions (NO3- or SO42-) up an [SO42-]/[As] or [NO3-]/[As] ratio of 150/1, whereas that of bare AE (anion exchange resin) was negligible for [SO4]/[As] over 15/1. In addition, the As(V) maximum adsorption capacity of ZMAE was found to be 41.2 mg/g, which is in contrast with the negligible adsorption of bare AE under sulfate-rich condition. The enhanced arsenate selectivity of ZMAE can be attributed to the excellent selectivity of ZM NPs (zirconium molybdate nanoparticles), which contributed up to 45% of the adsorption capacity of ZMAE. The behavior of ZMAE towards arsenate was compared with that towards phosphate showing similar adsorption performances between them, which indicates the similar affinity of ZMAE towards arsenate and phosphate. Finally, ZMAE examined for fixed-bed column adsorption for As(V) removal from synthetic As(V) water was effective for up to 5100 BVs, treating As(V) from 0.1 mg/L to below 0.01 mg/L (meeting the WHO guidelines).
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Affiliation(s)
- Trung Huu Bui
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Sung Pil Hong
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea.
- Korea Environment Institute, 370 Sicheong-daero, Sejong-si, 30147, Korea.
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Lee J, Lee J, Ahn J, Jo K, Hong SP, Kim C, Lee C, Yoon J. Enhancement in Desalination Performance of Battery Electrodes via Improved Mass Transport Using a Multichannel Flow System. ACS Appl Mater Interfaces 2019; 11:36580-36588. [PMID: 31560520 DOI: 10.1021/acsami.9b10003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Desalination technologies have heavily been investigated to utilize the abundant salt water on Earth due to the global freshwater shortage. During recent years, the desalination battery (DB) has attracted attention for its low-cost, eco-friendly, and energy-efficient characteristics. However, the current DB system is subject to inevitable performance degradation because of the mass-transfer limitation at the electrode-electrolyte interface, particularly when the system is used to treat brackish water. Here, we present a novel strategy to overcome the intrinsic mass-transfer limitation of DB in brackish water using an effective cell design based on a multichannel flow system. Compared to the conventional DB that consists of one feed channel, the multichannel desalination battery (MC-DB) is configured using two side channels introducing a highly concentrated solution to the electrodes and one middle feed channel for water desalination. The MC-DB showed a desalination capacity of 52.9 mg g-1 and a maximum salt removal rate of 0.0576 mg g-1 s-1 (production rate of 42.3 g m-2 h-1) when a salinity gradient between the feed streams in the middle (10 mM NaCl) and side (1000 mM NaCl) channels was present, which were 3-fold higher than those in the case with no salinity gradient. In addition, the high concentration solution in the side channel significantly enhanced the rate capability of MC-DB, allowing the system to operate under a high current density of 40 A m-2 with a desalination capacity of 34.1 mg g-1. Considering the effect of electrolyte concentration on the battery electrode performance through electrochemical characterization, the highly saline medium at the side channel in the MC-DB creates an optimal environment for the battery electrode to fully capitalize the high desalination capacity, salt removal rate, and capacity retention of the battery electrodes.
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Affiliation(s)
- Jiho Lee
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process , Seoul National University (SNU) , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea
| | - Jaehan Lee
- Department of Biological and Chemical Engineering, College of Science and Technology , Hongik University , 2639 Sejong-ro , Sejong-si 30016 , Republic of Korea
| | - Jaewuk Ahn
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process , Seoul National University (SNU) , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea
| | - Kyusik Jo
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process , Seoul National University (SNU) , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea
| | - Sung Pil Hong
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process , Seoul National University (SNU) , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea
| | - Choonsoo Kim
- Department of Environmental Engineering and Institute of Energy/Environment Convergence Technologies , Kongju National University , 1223-23, Cheonan-daero , Cheonan-si 31080 , Republic of Korea
| | - Changha Lee
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process , Seoul National University (SNU) , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process , Seoul National University (SNU) , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea
- Korea Environment Institute , 370 Sicheong-daero , Sejong-si 30147 , Republic of Korea
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Cenko E, Van Der Schaar M, Yoon J, Vasiljevic Z, Kedev S, Vavlukis M, Bergami M, Scarpone M, Milicic D, Manfrini O, Badimon L, Bugiardini R. P6419Machine learning in critical care: the role of diabetes and age in acute coronary syndromes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Patients with diabetes and non-ST elevation acute coronary syndrome (NSTE-ACS) have an increased risk of mortality and adverse outcomes following percutaneous coronary intervention (PCI).
Purpose
We aimed to investigate the impact of early, within 24 hours PCI compared with only routine medical treatment on clinical outcomes in a large international cohort of patients with NSTE-ACS and diabetes.
Methods
We identified 1,250 patients with diabetes and NSTE-ACS from a registry-based population between October 2010 and April 2016. The primary endpoint was 30-day all-cause mortality. The secondary endpoint was the composite outcome of 30-day all-cause mortality and left ventricular dysfunction (ejection fraction <40%). We undertook analyses to explore the heterogeneity of treatment effects using meta-classification (MC) algorithms followed by propensity score matching and inverse-probability-of-treatment weighting (IPTW) from a landmark of 24 hours from hospitalization.
Results
Of 1,250 NSTE-ACS first-day survivors with diabetes (median age 67 years; 59%, men), 470 (37.6%) received early PCI and 780 routine medical treatment. The overall 30-day all-cause mortality rates were higher in the routine medical treatment than the early PCI group (6.3% vs. 2.5%). The prediction results of the MC algorithms accounted for only one interaction term that was statistically significant: age ≥65 years. After propensity-matched analysis as well as IPTW, early PCI was associated with reduced 30-day all-cause mortality in the older age (OR: 0.35; 95% CI: 0.14 to 0.92 and 0.43; 95% CI: 0.21 to 0.86, respectively), whereas younger age had no association with the primary endpoint. Similar results were also obtained for the secondary endpoint.
Conclusions
Among patients with diabetes hospitalized for NSTE-ACS, an early, within 24 hours, PCI strategy is associated with reduced odds of 30-day mortality only for patients aged 65 years or over. MC algorithms provide accurate identification of treatment effect modifiers.
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Affiliation(s)
- E Cenko
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | | | - J Yoon
- University of California Los Angeles, Los Angeles, United States of America
| | | | - S Kedev
- University Clinic of Cardiology, Skopje, North Macedonia
| | - M Vavlukis
- University Clinic of Cardiology, Skopje, North Macedonia
| | - M Bergami
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - M Scarpone
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - D Milicic
- University of Zagreb School of Medicine, Zagreb, Croatia
| | - O Manfrini
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
| | - L Badimon
- Autonomous University of Barcelona, Cardiovascular Program (ICCC), IR-Hospital de la Santa Creu i Sant Pau. CiberCV-Institute Carlos, Barcelona, Spain
| | - R Bugiardini
- University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Bologna, Italy
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Choi S, Cho D, Yoon S, Yoon J. EP1.17-22 In Stage I Non-Small Cell Lung Cancer, Abutting Adjacent Structures Is a Possible Prognostic Factor. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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