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Nantongo M, Nguyen DC, Bethel CR, Taracila MA, Li Q, Dousa KM, Shin E, Kurz SG, Nguyen L, Kreiswirth BN, Boom WH, Plummer MS, Bonomo RA. Durlobactam, a Diazabicyclooctane β-Lactamase Inhibitor, Inhibits BlaC and Peptidoglycan Transpeptidases of Mycobacterium tuberculosis. ACS Infect Dis 2024; 10:1767-1779. [PMID: 38619138 DOI: 10.1021/acsinfecdis.4c00119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Peptidoglycan synthesis is an underutilized drug target in Mycobacterium tuberculosis (Mtb). Diazabicyclooctanes (DBOs) are a class of broad-spectrum β-lactamase inhibitors that also inhibit certain peptidoglycan transpeptidases that are important in mycobacterial cell wall synthesis. We evaluated the DBO durlobactam as an inhibitor of BlaC, the Mtb β-lactamase, and multiple Mtb peptidoglycan transpeptidases (PonA1, LdtMt1, LdtMt2, LdtMt3, and LdtMt5). Timed electrospray ionization mass spectrometry (ESI-MS) captured acyl-enzyme complexes with BlaC and all transpeptidases except LdtMt5. Inhibition kinetics demonstrated durlobactam was a potent and efficient DBO inhibitor of BlaC (KI app 9.2 ± 0.9 μM, k2/K 5600 ± 560 M-1 s-1) and similar to clavulanate (KI app 3.3 ± 0.6 μM, k2/K 8400 ± 840 M-1 s-1); however, durlobactam had a lower turnover number (tn = kcat/kinact) than clavulanate (1 and 8, respectively). KI app values with durlobactam and clavulanate were similar for peptidoglycan transpeptidases, but ESI-MS captured durlobactam complexes at more time points. Molecular docking and simulation demonstrated several productive interactions of durlobactam in the active sites of BlaC, PonA1, and LdtMt2. Antibiotic susceptibility testing was conducted on 11 Mtb isolates with amoxicillin, ceftriaxone, meropenem, imipenem, clavulanate, and durlobactam. Durlobactam had a minimum inhibitory concentration (MIC) range of 0.5-16 μg/mL, similar to the ranges for meropenem (1-32 μg/mL) and imipenem (0.5-64 μg/mL). In β-lactam + durlobactam combinations (1:1 mass/volume), MICs were lowered 4- to 64-fold for all isolates except one with meropenem-durlobactam. This work supports further exploration of novel β-lactamase inhibitors that target BlaC and Mtb peptidoglycan transpeptidases.
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Affiliation(s)
- Mary Nantongo
- Department of Molecular Biology and Microbiology, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
- Research Service, Louis Stokes Veterans Affairs Medical Center, Cleveland, Ohio 44106, United States
| | - David C Nguyen
- Division of Infectious Diseases, Department of Pediatrics and Division of Infectious Diseases, and Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois 60612, United States
| | - Christopher R Bethel
- Research Service, Louis Stokes Veterans Affairs Medical Center, Cleveland, Ohio 44106, United States
| | - Magdalena A Taracila
- Research Service, Louis Stokes Veterans Affairs Medical Center, Cleveland, Ohio 44106, United States
- Department of Medicine, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
| | - Qing Li
- Department of Medicine, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
| | - Khalid M Dousa
- Research Service, Louis Stokes Veterans Affairs Medical Center, Cleveland, Ohio 44106, United States
- Department of Medicine, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
- Medical Service, Veterans Affairs Northeast Ohio Healthcare System (VANEOHS), Cleveland, Ohio 44106, United States
| | - Eunjeong Shin
- Research Service, Louis Stokes Veterans Affairs Medical Center, Cleveland, Ohio 44106, United States
- Department of Medicine, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
| | - Sebastian G Kurz
- Department of Internal Medicine VIII, Medical Oncology and Pneumology, University of Tübingen, 72076 Tübingen, Germany
| | - Liem Nguyen
- Department of Molecular Biology and Microbiology, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
| | - Barry N Kreiswirth
- Center for Discovery and Innovation, Hackensack, New Jersey 07110, United States
| | - W Henry Boom
- Department of Molecular Biology and Microbiology, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
- Department of Medicine, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
| | - Mark S Plummer
- Biopharmaworks, Groton, Connecticut 06340, United States
| | - Robert A Bonomo
- Department of Molecular Biology and Microbiology, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
- Department of Medicine, Case Western Reserve University (CWRU), Cleveland, Ohio 44106, United States
- Medical Service, Veterans Affairs Northeast Ohio Healthcare System (VANEOHS), Cleveland, Ohio 44106, United States
- CWRU-Cleveland VAMC Center for Antibiotic Resistance and Epidemiology (Case VA CARES), Cleveland, Ohio 44106, United States
- Departments of Biochemistry, Pharmacology, and Proteomics and Bioinformatics, CWRU, Cleveland, Ohio 44106, United States
- Cleveland Geriatrics Research Education and Clinical Center (GRECC), VANEOHS, Cleveland, Ohio 44106, United States
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Zhou J, Qian Y, Lang Y, Zhang Y, Tao X, Moya B, Sayed ARM, Landersdorfer CB, Shin E, Werkman C, Smith NM, Kim TH, Kumaraswamy M, Shin BS, Tsuji BT, Bonomo RA, Lee RE, Bulitta JB. Comprehensive stability analysis of 13 β-lactams and β-lactamase inhibitors in in vitro media, and novel supplement dosing strategy to mitigate thermal drug degradation. Antimicrob Agents Chemother 2024; 68:e0139923. [PMID: 38329330 PMCID: PMC10916406 DOI: 10.1128/aac.01399-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/06/2024] [Indexed: 02/09/2024] Open
Abstract
Non-clinical antibiotic development relies on in vitro susceptibility and infection model studies. Validating the achievement of the targeted drug concentrations is essential to avoid under-estimation of drug effects and over-estimation of resistance emergence. While certain β-lactams (e.g., imipenem) and β-lactamase inhibitors (BLIs; clavulanic acid) are believed to be relatively unstable, limited tangible data on their stability in commonly used in vitro media are known. We aimed to determine the thermal stability of 10 β-lactams and 3 BLIs via LC-MS/MS in cation-adjusted Mueller Hinton broth at 25 and 36°C as well as agar at 4 and 37°C, and in water at -20, 4, and 25°C. Supplement dosing algorithms were developed to achieve broth concentrations close to their target over 24 h. During incubation in broth (pH 7.25)/agar, degradation half-lives were 16.9/21.8 h for imipenem, 20.7/31.6 h for biapenem, 29.0 h for clavulanic acid (studied in broth only), 23.1/71.6 h for cefsulodin, 40.6/57.9 h for doripenem, 46.5/64.6 h for meropenem, 50.8/97.7 h for cefepime, 61.5/99.5 h for piperacillin, and >120 h for all other compounds. Broth stability decreased at higher pH. All drugs were ≥90% stable for 72 h in agar at 4°C. Degradation half-lives in water at 25°C were >200 h for all drugs except imipenem (14.7 h, at 1,000 mg/L) and doripenem (59.5 h). One imipenem supplement dose allowed concentrations to stay within ±31% of their target concentration. This study provides comprehensive stability data on β-lactams and BLIs in relevant in vitro media using LC-MS/MS. Future studies are warranted applying these data to antimicrobial susceptibility testing and assessing the impact of β-lactamase-related degradation.
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Affiliation(s)
- Jieqiang Zhou
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Yuli Qian
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Yinzhi Lang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Yongzhen Zhang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Xun Tao
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Bartolome Moya
- Servicio de Microbiología and Unidad de investigación, Hospital Universitario Son Espases, Instituto de investigación Sanitaria Illes Balears (IdISBa), Palma de Mallorca, Spain
| | - Alaa R. M. Sayed
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
- Department of Chemistry, Faculty of Science, Fayoum University, Fayoum, Egypt
| | - Cornelia B. Landersdorfer
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Eunjeong Shin
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Carolin Werkman
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Nicholas M. Smith
- Laboratory for Antimicrobial Pharmacodynamics, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, New York, USA
| | - Tae Hwan Kim
- College of Pharmacy, Catholic University of Daegu, Gyeongsan, Gyeongbuk, South Korea
| | - Monika Kumaraswamy
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California San Diego, La Jolla, California, USA
- Infectious Diseases Section, VA San Diego Healthcare System, San Diego, California, USA
| | - Beom Soo Shin
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, South Korea
| | - Brian T. Tsuji
- Laboratory for Antimicrobial Pharmacodynamics, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, New York, USA
| | - Robert A. Bonomo
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Research Service, Louis Stokes Cleveland Department of Veterans Affairs, Cleveland, Ohio, USA
- Department of Molecular Biology and Microbiology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Departments of Pharmacology, Biochemistry, and Proteomics and Bioinformatics, Case Western Reserve University School of Medicine, and the CWRU-Cleveland VAMC Center for Antimicrobial Resistance and Epidemiology (Case VA CARES), Cleveland, Ohio, USA
| | - Richard E. Lee
- Department of Chemical Biology and Therapeutics, St Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Jürgen B. Bulitta
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
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Vogel J, Miller KF, Shin E, Krussman JM, Melvin PR. Expanded Access to Fluoroformamidines via a Modular Synthetic Pathway. Org Lett 2024; 26:1277-1281. [PMID: 38323858 PMCID: PMC10877594 DOI: 10.1021/acs.orglett.4c00131] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/08/2024]
Abstract
Fluoroformamidines are an underutilized and understudied functional group despite combining two of the most highly prized elements in drug design: nitrogen and fluorine. We report a practical and modular synthesis of fluoroformamidines via the rearrangement of in situ-generated amidoximes. High yields in just 60 s at room temperature highlight the efficiency of this protocol. Furthermore, fluoroformamidines proved to be useful intermediates in the synthesis of diverse ureas and carbamimidates.
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Affiliation(s)
- James
A. Vogel
- Department
of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Kirya F. Miller
- Department
of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Eunjeong Shin
- Department
of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Jenna M. Krussman
- Department
of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
| | - Patrick R. Melvin
- Department
of Chemistry, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, United States
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Shin E, Zhang Y, Zhou J, Lang Y, Sayed ARM, Werkman C, Jiao Y, Kumaraswamy M, Bulman ZP, Luna BM, Bulitta JB. Improved characterization of aminoglycoside penetration into human lung epithelial lining fluid via population pharmacokinetics. Antimicrob Agents Chemother 2024; 68:e0139323. [PMID: 38169309 PMCID: PMC10848756 DOI: 10.1128/aac.01393-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024] Open
Abstract
Aminoglycosides are important treatment options for serious lung infections, but modeling analyses to quantify their human lung epithelial lining fluid (ELF) penetration are lacking. We estimated the extent and rate of penetration for five aminoglycosides via population pharmacokinetics from eight published studies. The area under the curve in ELF vs plasma ranged from 50% to 100% and equilibration half-lives from 0.61 to 5.80 h, indicating extensive system hysteresis. Aminoglycoside ELF peak concentrations were blunted, but overall exposures were moderately high.
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Affiliation(s)
- Eunjeong Shin
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Yongzhen Zhang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Jieqiang Zhou
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Yinzhi Lang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Alaa R. M. Sayed
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Carolin Werkman
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | | | - Monika Kumaraswamy
- Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California San Diego, La Jolla, California, USA
- Infectious Diseases Section, VA San Diego Healthcare System, San Diego, California, USA
| | - Zackery P. Bulman
- Department of Pharmacy Practice, College of Pharmacy, University of Illinois Chicago, Chicago, Illinois, USA
| | - Brian M. Luna
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Jürgen B. Bulitta
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
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5
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Ryu B, Shin E, Kim DH, Lee H, Choi SY, Kim SS, Kim IH, Kim EJ, Lee S, Jeon J, Kwon D, Cho S. Changes in the intrinsic severity of severe acute respiratory syndrome coronavirus 2 according to the emerging variant: a nationwide study from February 2020 to June 2022, including comparison with vaccinated populations. BMC Infect Dis 2024; 24:1. [PMID: 38166696 PMCID: PMC10759357 DOI: 10.1186/s12879-023-08869-7] [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: 04/10/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND As the population acquires immunity through vaccination and natural infection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), understanding the intrinsic severity of coronavirus disease (COVID-19) is becoming challenging. We aimed to evaluate the intrinsic severity regarding circulating variants of SARS-CoV-2 and to compare this between vaccinated and unvaccinated individuals. METHODS With unvaccinated and initially infected confirmed cases of COVID-19, we estimated the case severity rate (CSR); case fatality rate (CFR); and mortality rate (MR), including severe/critical cases and deaths, stratified by age and compared by vaccination status according to the period regarding the variants of COVID-19 and vaccination. The overall rate was directly standardized with age. RESULTS The age-standardized CSRs (aCSRs) of the unvaccinated group were 2.12%, 5.51%, and 0.94% in the pre-delta, delta, and omicron period, respectively, and the age-standardized CFRs (aCFRs) were 0.60%, 2.49%, and 0.63% in each period, respectively. The complete vaccination group had lower severity than the unvaccinated group over the entire period showing under 1% for the aCSR and 0.5% for the aCFR. The age-standardized MR of the unvaccinated group was 448 per million people per month people in the omicron period, which was 11 times higher than that of the vaccinated group. In terms of age groups, the CSR and CFR sharply increased with age from the 60 s and showed lower risk reduction in the 80 s when the period changed to the omicron period. CONCLUSIONS The intrinsic severity of COVID-19 was the highest in the delta period, with over 5% for the aCSR, whereas the completely vaccinated group maintained below 1%. This implies that when the population is vaccinated, the impact of COVID-19 will be limited, even if a new mutation appears. Moreover, considering the decreasing intrinsic severity, the response to COVID-19 should prioritize older individuals at a higher risk of severe disease.
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Affiliation(s)
- Boyeong Ryu
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
- Department of Public Health Science, Graduate School of Public Health, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 08826, Republic of Korea
| | - Eunjeong Shin
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - Dong Hwi Kim
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - HyunJu Lee
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - So Young Choi
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - Seong-Sun Kim
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - Il-Hwan Kim
- Division of Emerging Infectious Diseases, Bureau of Infectious Diseases Diagnosis Control, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - Eun-Jin Kim
- Division of Emerging Infectious Diseases, Bureau of Infectious Diseases Diagnosis Control, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - Sangwon Lee
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea
| | - Jaehyun Jeon
- Department of Infectious Diseases, Clinical Infectious Disease Research Center, National Medical Center, 245, Eulji-ro, Jung-gu, Seoul, Korea
| | - Donghyok Kwon
- Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency (KDCA), 187, Osongsaengmyeong 2-Ro, Osong-Eup, Heungdeok-Gu, Cheongju, Korea.
| | - Sungil Cho
- Department of Public Health Science, Graduate School of Public Health, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 08826, Republic of Korea.
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Bulitta JB, Shin E, Bergen PJ, Lang Y, Forrest A, Tsuji BT, Moya B, Li J, Nation RL, Landersdorfer CB. Distinguishing Inducible and Non-Inducible Resistance to Colistin in Pseudomonas aeruginosa by Quantitative and Systems Pharmacology Modeling at Low and Standard Inocula. J Pharm Sci 2024; 113:202-213. [PMID: 37879409 DOI: 10.1016/j.xphs.2023.10.029] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/20/2023] [Accepted: 10/20/2023] [Indexed: 10/27/2023]
Abstract
Colistin is a polymyxin and peptide antibiotic that can yield rapid bacterial killing, but also leads to resistance emergence. We aimed to develop a novel experimental and Quantitative and Systems Pharmacology approach to distinguish between inducible and non-inducible resistance. Viable count profiles for the total and less susceptible populations of Pseudomonas aeruginosa ATCC 27853 from static and dynamic in vitro infection models were simultaneously modeled. We studied low and normal initial inocula to distinguish between inducible and non-inducible resistance. A novel cutoff filter approach allowed us to describe the eradication and inter-conversion of bacterial populations. At all inocula, 4.84 mg/L of colistin (sulfate) yielded ≥4 log10 killing, followed by >4 log10 regrowth. A pre-existing, less susceptible population was present at standard but not at low inocula. Formation of a non-pre-existing, less susceptible population was most pronounced at intermediate colistin (sulfate) concentrations (0.9 to 5 mg/L). Both less susceptible populations inter-converted with the susceptible population. Simultaneously modeling of the total and less susceptible populations at low and standard inocula enabled us to identify the de novo formation of an inducible, less susceptible population. Inducible resistance at intermediate colistin concentrations highlights the importance of rapidly achieving efficacious polymyxin concentrations by front-loaded dosage regimens.
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Affiliation(s)
- Jürgen B Bulitta
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL, USA.
| | - Eunjeong Shin
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL, USA
| | - Phillip J Bergen
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville campus), Parkville, Australia
| | - Yinzhi Lang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL, USA
| | - Alan Forrest
- School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, SUNY, Buffalo, NY, USA
| | - Brian T Tsuji
- School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, SUNY, Buffalo, NY, USA
| | - Bartolome Moya
- Servicio de Microbiología and Unidad de Investigación, Hospital Universitario Son Espases, Instituto de Investigación Sanitaria Illes Balears (IdISBa), Palma de Mallorca, Spain
| | - Jian Li
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville campus), Parkville, Australia; Biomedicine Discovery Institute, Infection Program, Department of Microbiology and Department of Pharmacology, Monash University, Melbourne, Australia
| | - Roger L Nation
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville campus), Parkville, Australia
| | - Cornelia B Landersdorfer
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville campus), Parkville, Australia
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7
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Vogel JA, Miller KF, Shin E, Krussman JM, Melvin PR. A modified Beckmann rearrangement for the facile synthesis of amidines and imidates via imidoyl fluoride intermediates. RSC Adv 2023; 13:30129-30132. [PMID: 37842679 PMCID: PMC10573916 DOI: 10.1039/d3ra06561h] [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: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/17/2023] Open
Abstract
Herein, we report a modified Beckmann rearrangement using sulfone iminium fluoride (SIF) reagents to rapidly synthesize imidoyl fluoride intermediates. Subsequently, amidine and imidate products can be formed following the introduction of amine and alcohol nucleophiles, respectively. Overall, approximately 50 amidine and imidate products have been isolated in high yields utilizing mild conditions.
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Affiliation(s)
- James A Vogel
- Department of Chemistry, Bryn Mawr College Bryn Mawr Pennsylvania 19010 USA
| | - Kirya F Miller
- Department of Chemistry, Bryn Mawr College Bryn Mawr Pennsylvania 19010 USA
| | - Eunjeong Shin
- Department of Chemistry, Bryn Mawr College Bryn Mawr Pennsylvania 19010 USA
| | - Jenna M Krussman
- Department of Chemistry, Bryn Mawr College Bryn Mawr Pennsylvania 19010 USA
| | - Patrick R Melvin
- Department of Chemistry, Bryn Mawr College Bryn Mawr Pennsylvania 19010 USA
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8
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Choi SY, Ryu B, Lee HJ, Kim DH, Shin E, Kim SS, Kwon D. Risk Factors for Sudden Death Within 2 Days After Diagnosis of COVID-19 in Korea. J Korean Med Sci 2023; 38:e214. [PMID: 37431542 DOI: 10.3346/jkms.2023.38.e214] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/20/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND We aimed to analyze the risk factors for sudden death after diagnosis of coronavirus disease 2019 (COVID-19) in South Korea and to provide evidence for informing prevention and control interventions for patients at risk of sudden death. METHODS We included 30,302 COVID-19 related deaths registered in the patient management information system (Central Disease Control Headquarters) between January 1, 2021, and December 15, 2022. We collected their epidemiological data recorded by the reporting city, province, or country. We performed multivariate logistic regression analysis to identify risk factors for sudden death after diagnosis of COVID-19. RESULTS Among the 30,302 deaths, there were 7,258 (24.0%) and 23,044 (76.0%) sudden and non-sudden deaths, respectively. Sudden death means a person who died within 2 days of diagnosis and who did not receive inpatient treatment. Underlying condition, vaccination status, and place of death were significantly associated with the survival period in all age groups. Moreover, region, sex, and prescription were significantly associated with the survival period only in certain age groups. However, reinfection was not significantly associated with the survival period in any age group. CONCLUSION To our knowledge, this is the first study on the risk factors for sudden death after a diagnosis of COVID-19, which included age, underlying condition, vaccination status, and place of death. Additionally, individuals aged < 60 years without an underlying condition were at high risk for sudden death. However, this group has relatively low interest in health, as can be seen from the high non-vaccination rate (16.1% of the general population vs. 61.6% of the corresponding group). Therefore, there is a possibility for the presence of an uncontrolled underlying disease in this population. In addition, many sudden deaths occurred due to delayed hospital visits to continue economic activities even after the onset of COVID-19 symptoms (7 days overall vs. 10 days average for the group). In conclusion, 'continued interest in health' is a key factor in avoiding sudden death in the economically active group (under 60 years of age).
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Affiliation(s)
- So Young Choi
- Division of Public Health Emergency Response Research, Bureau of Public Health Emergency Preparedness, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Boyeong Ryu
- Division of Public Health Emergency Response Research, Bureau of Public Health Emergency Preparedness, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Hyun-Ju Lee
- Division of Healthcare Safety and immunization, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Dong-Hwii Kim
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Eunjeong Shin
- Division of Public Health Emergency Response Research, Bureau of Public Health Emergency Preparedness, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Seong-Sun Kim
- Division of Public Health Emergency Response Research, Bureau of Public Health Emergency Preparedness, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Donghyok Kwon
- Division of Public Health Emergency Response Research, Bureau of Public Health Emergency Preparedness, Korea Disease Control and Prevention Agency, Cheongju, Korea.
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Kim NY, Kim SS, Lee HJ, Kim DH, Ryu B, Shin E, Kwon D. Risk factors for deaths associated with COVID-19 according to the cause of death classification in Republic of Korea. Osong Public Health Res Perspect 2023; 14:89-99. [PMID: 37183329 DOI: 10.24171/j.phrp.2022.0312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/16/2023] [Indexed: 05/16/2023] Open
Abstract
OBJECTIVES This study aimed to classify coronavirus disease 2019 (COVID-19)-related deaths according to whether COVID-19 was listed as the cause of death, and to investigate the differences in demographic characteristics and risk factors for COVID-19 death classifications. METHODS A total of 5,625 deaths in South Korea among patients with confirmed COVID-19 from January 20, 2020 to December 31, 2021 were selected. Excluding false reports and unnatural deaths, 5,597 deaths were analyzed. Based on death report data, deaths were classified according to whether the cause of death was listed as COVID-19 (CD) or not (NCD). The epidemiological characteristics and causes of deaths were investigated using descriptive, univariate, and multivariate statistical analyses. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to analyze the risk factors. RESULTS The case fatality ratio was 0.89% and increased with age. Additionally, 96.4% of the subjects had an underlying disease, and 53.4% died in winter. The proportion of NCDs was 9.3%, of whom 19.1% died at home and 39.0% were confirmed to have COVID-19 after death. Malignant neoplasms (102/416 vs. 637/4,442; OR, 1.71; 95% CI, 1.36-2.16; p<0.001) were significantly associated with NCD. CONCLUSION This is the first study to analyze risk factors by cause of death using COVID-19 death report data in South Korea. These results are expected to be used as evidence for establishing a death monitoring system that can collect timely information in a new infectious disease pandemic.
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Affiliation(s)
- Na-Young Kim
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Seong-Sun Kim
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Hyun Ju Lee
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Dong Hwi Kim
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Boyeong Ryu
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Eunjeong Shin
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
| | - Donghyok Kwon
- Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea
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10
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Shin E, Choe YJ, Ryu B, Kim NY, Lee HJ, Kim DH, Kim SS, Kwon D, Yun KW, Park SE, Choi EH, Lee S, Lee H. Pediatric Deaths Associated With Coronavirus Disease 2019 (COVID-19) in Korea. J Korean Med Sci 2023; 38:e21. [PMID: 36647219 PMCID: PMC9842489 DOI: 10.3346/jkms.2023.38.e21] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 10/19/2022] [Indexed: 01/04/2023] Open
Abstract
As of September 3, 2022, 5,388,338 coronavirus disease 2019 (COVID-19) cases and 46 deaths (3 in 2021 and 43 in 2022) were reported in children ≤ 18 years in Korea. Cumulative confirmed cases accounted for 67.3% of the population aged ≤ 18 years and case fatality rate was 0.85/100,000. Among 46 fatal cases, 58.7% were male and median age was 7 years. Underlying diseases were present in 47.8%; neurologic diseases (63.6%) and malignancy (13.6%) most common. Only four had history of COVID-19 immunization. COVID-19 associated deaths occurred at median 2 days from diagnosis (range: -1 to 21). Among COVID-19 deaths, 41.3% occurred before admission; 2 before hospital arrival and 17 in the emergency department. Among children whose cause was documented, myocarditis, respiratory and multiorgan failure were most common. COVID-19 associated death was seen early after diagnosis in children and public health policies to provide access to medical care for children with COVID-19 are essential during the pandemic.
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Affiliation(s)
- Eunjeong Shin
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Young June Choe
- Department of Pediatrics, Korea University Anam Hospital, Seoul, Korea
| | - Boyeong Ryu
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Na-Young Kim
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Hyun Ju Lee
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Dong Hwi Kim
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Seong-Sun Kim
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Donghyok Kwon
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea
| | - Ki Wook Yun
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Su Eun Park
- Department of Pediatrics, Pusan National University School of Medicine, Busan, Korea
| | - Eun Hwa Choi
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Sangwon Lee
- Data Analysis Team, Epidemiological Investigation and Analysis Task Force, Central Disease Control Headquarters, Korea Disease Control and Prevention Agency, Cheongju, Korea.
| | - Hyunju Lee
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
- Department of Pediatrics, Seoul National University Bundang Hospital, Seongnam, Korea.
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11
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Kennedy JL, Bulitta JB, Chatham-Stephens K, Person MK, Cook R, Mongkolrattanothai T, Shin E, Yu P, Negron ME, Bower WA, Hendricks K. Postexposure Prophylaxis and Treatment of Bacillus anthracis Infections: A Systematic Review and Meta-analyses of Animal Models, 1947-2019. Clin Infect Dis 2022; 75:S379-S391. [PMID: 36251546 PMCID: PMC9649436 DOI: 10.1093/cid/ciac591] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Anthrax is endemic to many countries, including the United States. The causative agent, Bacillus anthracis, poses a global bioterrorism threat. Without effective antimicrobial postexposure prophylaxis (PEPAbx) and treatment, the mortality of systemic anthrax is high. To inform clinical guidelines for PEPAbx and treatment of B. anthracis infections in humans, we systematically evaluated animal anthrax treatment model studies. METHODS We searched for survival outcome data in 9 scientific search engines for articles describing antimicrobial PEPAbx or treatment of anthrax in animals in any language through February 2019. We performed meta-analyses of efficacy of antimicrobial PEPAbx and treatment for each drug or drug combination using random-effects models. Pharmacokinetic/pharmacodynamic relationships were developed for 5 antimicrobials with available pharmacokinetic data. Monte Carlo simulations were used to predict unbound drug exposures in humans. RESULTS We synthesized data from 34 peer-reviewed studies with 3262 animals. For PEPAbx and treatment of infection by susceptible B. anthracis, effective monotherapy can be accomplished with fluoroquinolones, tetracyclines, β-lactams (including penicillin, amoxicillin-clavulanate, and imipenem-cilastatin), and lipopeptides or glycopeptides. For naturally occurring strains, unbound drug exposures in humans were predicted to adequately cover the minimal inhibitory concentrations (MICs; those required to inhibit the growth of 50% or 90% of organisms [MIC50 or MIC90]) for ciprofloxacin, levofloxacin, and doxycycline for both the PEPAbx and treatment targets. Dalbavancin covered its MIC50 for PEPAbx. CONCLUSIONS These animal studies show many reviewed antimicrobials are good choices for PEPAbx or treatment of susceptible B. anthracis strains, and some are also promising options for combating resistant strains. Monte Carlo simulations suggest that oral ciprofloxacin, levofloxacin, and doxycycline are particularly robust choices for PEPAbx or treatment.
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Affiliation(s)
- Jordan L Kennedy
- Correspondence: J. L. Kennedy, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, 1600 Clifton Rd, H24-12, Atlanta, GA 30329-4027 ()
| | - Jürgen B Bulitta
- Department of Pharmacotherapy and Translational Research, University of Florida College of Pharmacy, Orlando, Florida, USA
| | - Kevin Chatham-Stephens
- Division of Human Development and Disability, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Marissa K Person
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Rachel Cook
- Oak Ridge Institute for Science and Education, CDC Fellowship Program, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Thitipong Mongkolrattanothai
- Oak Ridge Institute for Science and Education, CDC Fellowship Program, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Eunjeong Shin
- Department of Pharmacotherapy and Translational Research, University of Florida College of Pharmacy, Orlando, Florida, USA
| | - Patricia Yu
- Division of Preparedness and Emerging Infections, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Maria E Negron
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - William A Bower
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Katherine Hendricks
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Choi Y, Shin E, Lee K, Shin H, Yu H, Lee J. Mesenchymal Stem/Stromal Cells: CRISPR/CAS9-BASED GENE EDITING SOLUTION TO BOOST HEMOCOMPATIBILITY OF MESENCHYMAL STROMAL/STEM CELL-BASED THERAPY. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00170-0] [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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13
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Lang Y, Shah NR, Tao X, Reeve SM, Zhou J, Moya B, Sayed ARM, Dharuman S, Oyer JL, Copik AJ, Fleischer BA, Shin E, Werkman C, Basso KB, Lucas DD, Sutaria DS, Mégroz M, Kim TH, Loudon-Hossler V, Wright A, Jimenez-Nieves RH, Wallace MJ, Cadet KC, Jiao Y, Boyce JD, LoVullo ED, Schweizer HP, Bonomo RA, Bharatham N, Tsuji BT, Landersdorfer CB, Norris MH, Shin BS, Louie A, Balasubramanian V, Lee RE, Drusano GL, Bulitta JB. Combating Multidrug-Resistant Bacteria by Integrating a Novel Target Site Penetration and Receptor Binding Assay Platform Into Translational Modeling. Clin Pharmacol Ther 2021; 109:1000-1020. [PMID: 33576025 PMCID: PMC10662281 DOI: 10.1002/cpt.2205] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/08/2021] [Accepted: 02/08/2021] [Indexed: 12/26/2022]
Abstract
Multidrug-resistant bacteria are causing a serious global health crisis. A dramatic decline in antibiotic discovery and development investment by pharmaceutical industry over the last decades has slowed the adoption of new technologies. It is imperative that we create new mechanistic insights based on latest technologies, and use translational strategies to optimize patient therapy. Although drug development has relied on minimal inhibitory concentration testing and established in vitro and mouse infection models, the limited understanding of outer membrane permeability in Gram-negative bacteria presents major challenges. Our team has developed a platform using the latest technologies to characterize target site penetration and receptor binding in intact bacteria that inform translational modeling and guide new discovery. Enhanced assays can quantify the outer membrane permeability of β-lactam antibiotics and β-lactamase inhibitors using multiplex liquid chromatography tandem mass spectrometry. While β-lactam antibiotics are known to bind to multiple different penicillin-binding proteins (PBPs), their binding profiles are almost always studied in lysed bacteria. Novel assays for PBP binding in the periplasm of intact bacteria were developed and proteins identified via proteomics. To characterize bacterial morphology changes in response to PBP binding, high-throughput flow cytometry and time-lapse confocal microscopy with fluorescent probes provide unprecedented mechanistic insights. Moreover, novel assays to quantify cytosolic receptor binding and intracellular drug concentrations inform target site occupancy. These mechanistic data are integrated by quantitative and systems pharmacology modeling to maximize bacterial killing and minimize resistance in in vitro and mouse infection models. This translational approach holds promise to identify antibiotic combination dosing strategies for patients with serious infections.
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Affiliation(s)
- Yinzhi Lang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Nirav R. Shah
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
- Present address: Jansen R&D, Johnson & Johnson, Spring House, Pennsylvania, USA
| | - Xun Tao
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
- Present address: Genentech USA,Inc., South San Francisco, California, USA
| | - Stephanie M. Reeve
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Jieqiang Zhou
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Bartolome Moya
- Servicio de Microbiología and Unidad de Investigación, Hospital Universitario Son Espases, Instituto de Investigación Sanitaria Illes Balears (IdISBa), Palma de Mallorca, Spain
| | - Alaa R. M. Sayed
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
- Department of Chemistry, Faculty of Science, Fayoum University, Fayoum, Egypt
| | - Suresh Dharuman
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Jeremiah L. Oyer
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Alicja J. Copik
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Brett A. Fleischer
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Eunjeong Shin
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Carolin Werkman
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Kari B. Basso
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Deanna Deveson Lucas
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Dhruvitkumar S. Sutaria
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
- Present address: Genentech USA,Inc., South San Francisco, California, USA
| | - Marianne Mégroz
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Tae Hwan Kim
- College of Pharmacy, Catholic University of Daegu, Gyeongsan, Gyeongbuk, Korea
| | - Victoria Loudon-Hossler
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Amy Wright
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Rossie H. Jimenez-Nieves
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Miranda J. Wallace
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Keisha C. Cadet
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - Yuanyuan Jiao
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
| | - John D. Boyce
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
| | - Eric D. LoVullo
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, Arizona, USA
| | - Herbert P. Schweizer
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, Arizona, USA
| | - Robert A. Bonomo
- Research Service and GRECC, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, Ohio, USA
- Department of Medicine, Pharmacology, Molecular Biology and Microbiology, Biochemistry and Proteomics and Bioinformatics, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- CWRU-Cleveland VAMC Center for Antimicrobial Resistance and Epidemiology (Case VA CARES), Cleveland, Ohio, USA
| | - Nagakumar Bharatham
- BUGWORKS Research India Pvt. Ltd., Centre for Cellular & Molecular Platforms, National Centre for Biological Sciences, Bengaluru, Karnataka, India
| | - Brian T. Tsuji
- Laboratory for Antimicrobial Pharmacodynamics, University at Buffalo, Buffalo, New York, USA
| | - Cornelia B. Landersdorfer
- Drug Delivery, Disposition, and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Victoria, Australia
- Centre for Medicine Use and Safety, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Victoria, Australia
| | - Michael H. Norris
- Spatial Epidemiology and Ecology Research Laboratory, Department of Geography and the Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA
| | - Beom Soo Shin
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, Korea
| | - Arnold Louie
- Institute for Therapeutic Innovation, College of Medicine, University of Florida, Orlando, Florida, USA
| | - Venkataraman Balasubramanian
- BUGWORKS Research India Pvt. Ltd., Centre for Cellular & Molecular Platforms, National Centre for Biological Sciences, Bengaluru, Karnataka, India
| | - Richard E. Lee
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - George L. Drusano
- Institute for Therapeutic Innovation, College of Medicine, University of Florida, Orlando, Florida, USA
| | - Jürgen B. Bulitta
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, Florida, USA
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Kim K, Hur J, Ku B, Koh J, Ahn M, Shin E. P14.25 Immune Cell Profiling of Hyperprogressive Disease in Patients with Non-Small Cell Lung Cancer Treated with Anti-PD-1/PD-L1 Antibodies. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.531] [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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15
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Sheppard LD, Cuttler C, Shin E, McLaughlin RJ. Differences in cortisol following cooperative and competitive work-related tasks with same-sex versus opposite-sex partners. Psychoneuroendocrinology 2021; 124:105063. [PMID: 33249332 DOI: 10.1016/j.psyneuen.2020.105063] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 10/22/2022]
Abstract
Previous research indicates that circulating concentrations of cortisol increase during interactions with opposite-sex others in the presence of mating cues. However, it remains unknown whether this phenomenon extends to work-related tasks in which explicit mating cues are absent. In a series of two studies, we assessed women's and men's salivary cortisol concentrations before and after completing a cooperative brainstorming (Study 1) and competitive negotiation (Study 2) task wherein they worked with same- or opposite-sex partners. Both studies revealed significant participant sex by partner sex interactions. Specifically, male participants demonstrated significantly larger increases in salivary cortisol concentrations when working alongside opposite-sex as opposed to same-sex partners on a cooperative task. In contrast, female participants demonstrated significantly larger increases in salivary cortisol concentrations when working with opposite-sex as opposed to same-sex partners on a competitive task. Opposite-sex teams also produced fewer novel ideas relative to same-sex teams on the cooperative brainstorming task; however, differences in cortisol did not account for this effect. Our research extends previous research demonstrating elevated cortisol during opposite-sex interactions in the presence of explicit mating cues to a work-related context that is divorced from mating cues.
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Affiliation(s)
- Leah D Sheppard
- Department of Management, Information Systems, and Entrepreneurship, Washington State University, Pullman, WA, 99164, USA.
| | - Carrie Cuttler
- Department of Psychology, Washington State University, Pullman, WA, 99164, USA
| | - Eunjeong Shin
- Department of Management, Information Systems, and Entrepreneurship, Washington State University, Pullman, WA, 99164, USA
| | - Ryan J McLaughlin
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA, 99164, USA
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Lam V, Hales R, Feliciano J, Voong K, Shin E, Smith K, Anagnostou V, Velculescu V, Thompson E, Sears C, Pardoll D, Rodavia H, Schneider H, Hu C, Amjad A, Guerrieri P, Jobe B, Zaidi A, Kelly R. 1497TiP REACTION – a phase Ib pilot study of nivolumab or nivolumab in combination with relatlimab after targeted radiation in patients with advanced esophagogastric cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2003] [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] Open
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17
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Kwon HH, Yang SH, Cho YJ, Shin E, Choi M, Bae Y, Jung JY, Park GH. Comparison of a 1064-nm neodymium-doped yttrium aluminum garnet picosecond laser using a diffractive optical element vs. a nonablative 1550-nm erbium-glass laser for the treatment of facial acne scarring in Asian patients: a 17-week prospective, randomized, split-face, controlled trial. J Eur Acad Dermatol Venereol 2020; 34:2907-2913. [PMID: 32603006 DOI: 10.1111/jdv.16643] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Novel picosecond lasers using a diffractive optical element (P-DOE) have been available for skin resurfacing with distinct mechanisms. However, there are limited data directly comparing P-DOE and conventional fractional lasers for the treatment of atrophic acne scarring. OBJECTIVES We sought to compare the efficacy and safety of a 1064-nm neodymium-doped yttrium aluminium garnet P-DOE and a non-ablative fractional laser (NAFL) in the treatment of acne scarring. METHODS A prospective, randomized, split-face, controlled trial was performed. One randomly assigned half-side of each patient's face (n = 25) was treated with four consecutive sessions of P-DOE at 3-week intervals and the other side with NAFL, with subsequent follow-up for 8 weeks after the final sessions. The efficacy and safety of the two lasers were determined by the Echelle d'Evaluation Clinique des Cicatrices d'acné (Scale of Clinical Evaluation of Acne Scars; ECCA) grading scale, Investigator's Global Assessment (IGA) score and patients' reports at the final visit. Histologic analysis was also performed. RESULTS The P-DOE-treated side achieved a significantly better improvement in acne appearance (ECCA per cent reduction: 55% vs. 42%) with less severe pain (4.3 vs. 5.6) (P < 0.05). The IGA score and subjective satisfaction were consistent with ECCA score results. Occurrences of treatment-related side-effects were also lower in the group treated with P-DOE (P < 0.05). Histologic analysis revealed elongation and increased density of neocollagen fibres, elastic fibres and mucin throughout the dermis from both sides. CONCLUSIONS Compared with NAFL, P-DOE afforded better clinical outcomes and fewer side-effects in the treatment of acne scarring in Asian patients.
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Affiliation(s)
- H H Kwon
- Oaro Dermatology Clinic, Seoul, Korea
| | - S H Yang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Y J Cho
- Oaro Dermatology Clinic, Seoul, Korea
| | - E Shin
- Department of Pathology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - M Choi
- Department of Dermatology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Y Bae
- Department of Dermatology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - J Y Jung
- Oaro Dermatology Clinic, Seoul, Korea
| | - G-H Park
- Department of Dermatology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
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Lee K, Lee N, Shin E, Lee N, Chang J, Na D, Lee J. Enhancing the therapeutic potential of mesenchymal stem cell-based therapy via CRISPR/Cas9-based genome editing. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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Fu Y, Tunacao J, Abiola G, Dreher M, Shin E, Kraitchman D, Weiss C. Abstract No. 688 Bariatric arterial embolization with radiopaque microspheres suppresses ghrelin expression and weight gain in swine. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.747] [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: 10/25/2022] Open
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20
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Shin E, Heldt T, Reisner A, Filbin M. 272 Septic Patients Often Present Without Obvious Bacterial Infection. Ann Emerg Med 2019. [DOI: 10.1016/j.annemergmed.2019.08.230] [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: 10/25/2022]
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Bulitta JB, Jiao Y, Landersdorfer CB, Sutaria DS, Tao X, Shin E, Höhl R, Holzgrabe U, Stephan U, Sörgel F. Comparable Bioavailability and Disposition of Pefloxacin in Patients with Cystic Fibrosis and Healthy Volunteers Assessed via Population Pharmacokinetics. Pharmaceutics 2019; 11:pharmaceutics11070323. [PMID: 31295857 PMCID: PMC6681055 DOI: 10.3390/pharmaceutics11070323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/30/2019] [Accepted: 07/04/2019] [Indexed: 11/16/2022] Open
Abstract
Quinolone antibiotics present an attractive oral treatment option in patients with cystic fibrosis (CF). Prior studies have reported comparable clearances and volumes of distribution in patients with CF and healthy volunteers for primarily renally cleared quinolones. We aimed to provide the first pharmacokinetic comparison for pefloxacin as a predominantly nonrenally cleared quinolone and its two metabolites between both subject groups. Eight patients with CF (fat-free mass [FFM]: 36.3 ± 6.9 kg, average ± SD) and ten healthy volunteers (FFM: 51.7 ± 9.9 kg) received 400 mg pefloxacin as a 30 min intravenous infusion and orally in a randomized, two-way crossover study. All plasma and urine data were simultaneously modelled. Bioavailability was complete in both subject groups. Pefloxacin excretion into urine was approximately 74% higher in patients with CF compared to that in healthy volunteers, whereas the urinary excretion of metabolites was only slightly higher in patients with CF. After accounting for body size and composition via allometric scaling by FFM, pharmacokinetic parameter estimates in patients with CF divided by those in healthy volunteers were 0.912 for total clearance, 0.861 for nonrenal clearance, 1.53 for renal clearance, and 0.916 for volume of distribution. Nonrenal clearance accounted for approximately 90% of total pefloxacin clearance. Overall, bioavailability and disposition were comparable between both subject groups.
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Affiliation(s)
- Jürgen B Bulitta
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL 32827, USA.
| | - Yuanyuan Jiao
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL 32827, USA
| | - Cornelia B Landersdorfer
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville VIC 3052, Australia
| | - Dhruvitkumar S Sutaria
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL 32827, USA
| | - Xun Tao
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL 32827, USA
| | - Eunjeong Shin
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Orlando, FL 32827, USA
| | - Rainer Höhl
- Institute of Clinical Hygiene, Medical Microbiology and Infectiology, Klinikum Nürnberg, Paracelsus Medical University, 90419 Nürnberg, Germany
| | - Ulrike Holzgrabe
- Institute for Pharmacy and Food Chemistry, University of Würzburg, 97074 Würzburg, Germany
| | - Ulrich Stephan
- IBMP-Institute for Biomedical and Pharmaceutical Research, 90562 Nürnberg-Heroldsberg, Germany
- Department of Pharmacology, University of Duisburg, 47057 Essen, Germany
| | - Fritz Sörgel
- IBMP-Institute for Biomedical and Pharmaceutical Research, 90562 Nürnberg-Heroldsberg, Germany.
- Department of Pharmacology, University of Duisburg, 47057 Essen, Germany.
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Weiss C, Vairavamurthy J, Akinwande O, Nwoke F, Cheskin L, Holly B, Hong K, Fischman A, Shin E, Steele K, Moran T, Kraitchman D, Arepally A. 3:27 PM Abstract No. 104 ■ FEATURED ABSTRACT Bariatric embolization of arteries for the treatment of obesity (BEAT obesity): 12-month safety and efficacy data. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.119] [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: 10/17/2022] Open
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Lee B, Kim H, Jeong S, Jung S, Shin E, Park H, Lim D, Lee J, Chung J, Yoon M, Han Y. EP-1775: The feasibility study of clinical high accuracy QA system for treatment planning using Monte Carlo. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32084-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: 10/14/2022]
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Youn J, Kim I, Jung M, Kang S, Shin E. Immunologic Characterization and Clinical Implication of CD4 + CD57 + T Cells in Patients with Acute Heart Failure. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.453] [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: 10/17/2022] Open
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Kim J, Lee B, Kim S, Kim T, Park S, Kim H, Sung Y, Kim S, Shin E. 258 PD-L1 regulates psoriatic inflammation by suppressing TCR-mediated IL-17 production of PD-1+ T cells. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.274] [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: 10/19/2022]
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Shin E, Fadel M, Sewart E, Yoong W. "Re: Campbell S, Corcoran P, Manning E, Greene R, for the Irish Maternal Morbidity Advisory Group. Peripartum hysterectomy incidence, risk factors and clinical characteristics in Ireland" [Eur. J. Obstet. Gynecol. Reprod. Biol. 207 (2016) 56-61]. Eur J Obstet Gynecol Reprod Biol 2017; 212:193-194. [PMID: 28335997 DOI: 10.1016/j.ejogrb.2017.03.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 03/07/2017] [Indexed: 12/01/2022]
Affiliation(s)
- E Shin
- St. George's International School of Medicine, Grenada
| | - M Fadel
- University College London School of Medicine, United Kingdom
| | - E Sewart
- University College London School of Medicine, United Kingdom
| | - W Yoong
- Department of Obstetrics and Gynaecology, North Middesex University Hospital, London N18 1QX, United Kingdom.
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Weiss C, Vairavamurthy J, Nwoke F, Akinwande O, Cheskin L, Holly B, Hong K, Fischman A, Patel R, Shin E, Steele K, Ziessman H, Moran T, Kraitchman D, Arepally A. The effects of bariatric embolization on gastric motility in severely obese patients: 6 month results from the BEAT Obesity trial. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.748] [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: 11/27/2022] Open
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Weiss C, Nwoke F, Vairavamurthy J, Akinwande O, Cheskin L, Holly B, Hong K, Fischman A, Patel R, Shin E, Steele K, Moran T, Kraitchman D, Arepally A. Endoscopic sequelae of bariatric embolization in severely obese patients: preliminary results of the Beat Obesity trial. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.749] [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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29
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Kagedan DJ, Dixon ME, Raju RS, Li Q, Elmi M, Shin E, Liu N, El-Sedfy A, Paszat L, Kiss A, Earle CC, Mittmann N, Coburn NG. Predictors of adjuvant treatment for pancreatic adenocarcinoma at the population level. ACTA ACUST UNITED AC 2016; 23:334-342. [PMID: 27803598 DOI: 10.3747/co.23.3205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND In the present study, we aimed to describe, at the population level, patterns of adjuvant treatment use after curative-intent resection for pancreatic adenocarcinoma (pcc) and to identify independent predictors of adjuvant treatment use. METHODS In this observational cohort study, patients undergoing pcc resection in the province of Ontario (population 13 million) during 2005-2010 were identified using the provincial cancer registry and were linked to administrative databases that include all treatments received and outcomes experienced in the province. Patients were defined as having received chemotherapy (ctx), chemoradiation (crt), or observation (obs). Clinicopathologic factors associated with the use of ctx, crt, or obs were identified by chi-square test. Logistic regression analyses were used to identify independent predictors of adjuvant treatment versus obs, and ctx versus crt. RESULTS Of the 397 patients included, 75.3% received adjuvant treatment (27.2% crt, 48.1% ctx) and 24.7% received obs. Within a single-payer health care system with universal coverage of costs for ctx and crt, substantial variation by geographic region was observed. Although the likelihood of receiving adjuvant treatment increased from 2005 to 2010 (p = 0.002), multivariate analysis revealed widespread variation between the treating hospitals (p = 0.001), and even between high-volume hepatopancreatobiliary hospitals (p = 0.0006). Younger age, positive lymph nodes, and positive surgical resection margins predicted an increased likelihood of receiving adjuvant treatment. Among patients receiving adjuvant treatment, positive margins and a low comorbidity burden were associated with crt compared with ctx. CONCLUSIONS Interinstitutional medical practice variation contributes significantly to differential patterns in the rate of adjuvant treatment for pcc. Whether such variation is warranted or unwarranted requires further investigation.
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Affiliation(s)
- D J Kagedan
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON
| | - M E Dixon
- Department of Surgery, Maimonides Medical Center, Brooklyn, NY, U.S.A
| | - R S Raju
- Sunnybrook Health Sciences Centre
| | - Q Li
- Institute for Clinical Evaluative Sciences and
| | - M Elmi
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON
| | - E Shin
- Faculty of Medicine, University of Toronto, Toronto, ON
| | - N Liu
- Institute for Clinical Evaluative Sciences and
| | - A El-Sedfy
- Department of Surgery, Saint Barnabas Medical Center, Livingston, NJ, U.S.A
| | - L Paszat
- Sunnybrook Health Sciences Centre; Institute for Clinical Evaluative Sciences and; Faculty of Medicine, University of Toronto, Toronto, ON
| | - A Kiss
- Sunnybrook Health Sciences Centre; Institute for Clinical Evaluative Sciences and; Institute of Health Policy, Management and Evaluation, University of Toronto and
| | - C C Earle
- Sunnybrook Health Sciences Centre; Institute for Clinical Evaluative Sciences and; Faculty of Medicine, University of Toronto, Toronto, ON
| | | | - N G Coburn
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON;; Sunnybrook Health Sciences Centre; Institute for Clinical Evaluative Sciences and; Faculty of Medicine, University of Toronto, Toronto, ON;; Institute of Health Policy, Management and Evaluation, University of Toronto and
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Shin E, Oh JH, Lee JH, Lee YJ. Deproteinization with ZnSO4–Ba(OH)2 reduces the photodegradation of montelukast during plasma sample preparation for HPLC analysis. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1198915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Eunjeong Shin
- Division of Biopharmaceutics, College of Pharmacy, Kyung Hee University, Seoul, South Korea
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul, South Korea
| | - Ju-Hee Oh
- Division of Biopharmaceutics, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Joo Hyun Lee
- Division of Biopharmaceutics, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Young-Joo Lee
- Division of Biopharmaceutics, College of Pharmacy, Kyung Hee University, Seoul, South Korea
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul, South Korea
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Shin E, Hong H, Park J, Oh Y, Jung J, Lee Y. Characterization of Staphylococcus aureus faecal isolates associated with food-borne disease in Korea. J Appl Microbiol 2016; 121:277-86. [PMID: 26991816 DOI: 10.1111/jam.13133] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 02/17/2016] [Accepted: 02/26/2016] [Indexed: 11/30/2022]
Abstract
AIMS To characterize Staphylococcus aureus faecal isolates from people suspected to be infected with food poisoning by using antimicrobial susceptibility testing and molecular techniques. METHODS AND RESULTS A total of 340 Staph. aureus isolates from 6226 people suspected to be infected with food poisoning were identified and characterized by biochemical methods, antimicrobial susceptibility testing and PCR. Samples were obtained from January 2006 to December 2008 from the National Notifiable Diseases Surveillance System at the Research Institute of Public Health and Environment in Seoul Metropolitan, Korea. All strains carried at least one of the eight staphylococcal enterotoxin (se) genes tested and a total of 27 se profiles were produced; the most frequent se profile was seg-sei and the next was sea. Among the total isolates, 36 methicillin-resistant Staphylococcus aureus (MRSAs) isolates were further analysed by multilocus sequence typing (MLST), Staphylococcal cassette chromosome mec (SCCmec) typing, pulsed-field gel electrophoresis (PFGE) and PCR detection for pvl. ST72-SCCmec type IV was the most predominant clone (27 isolates, 75%) followed by ST1-SCCmec type IV (five isolates, 13·8%), ST20-SCCmec type IV (one isolate, 2·8%), ST493-SCCmec type IV (one isolate, 2·8%), ST903-SCCmec type IV (one isolate, 2·8%) and ST5-SCCmec type II (one isolate, 2·8%). By PFGE typing, MRSAs isolated during the same period were grouped together although they were isolated from different regions. None of MRSAs had PVL gene and nine MRSAs were multidrug resistant. CONCLUSIONS Analysis of MRSAs by MLST, SCCmec typing, PFGE and pvl detection showed that the majority of strain associated with food-borne diseases belonged to a Korean community-acquired (CA) MRSA clone with ST72-SCCmec type IV-PVL negative-SEG/SEI and its variations while one strain was hospital-acquired (HA) MRSA. SIGNIFICANCE AND IMPACT OF THE STUDY CA-MRSA clone which possessed ST72-SCCmec type IV-PVL negative-SEG/SEI was spread most commonly among MRSAs that were associated with food-borne diseases. This is the first report of ST903 strain in Korea.
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Affiliation(s)
- E Shin
- Culture Collection of Antimicrobial Resistant Microbes, Department of Horticulture, Biotechnology, and Landscape Architecture, Seoul Women's University, Seoul, Korea
| | - H Hong
- Culture Collection of Antimicrobial Resistant Microbes, Department of Horticulture, Biotechnology, and Landscape Architecture, Seoul Women's University, Seoul, Korea
| | - J Park
- Culture Collection of Antimicrobial Resistant Microbes, Department of Horticulture, Biotechnology, and Landscape Architecture, Seoul Women's University, Seoul, Korea
| | - Y Oh
- Epidemiology Team, Biomedical Research Division, Research Institute of Public Health & Environment, Seoul Metropolitan Government, Gwachon, Korea
| | - J Jung
- Epidemiology Team, Biomedical Research Division, Research Institute of Public Health & Environment, Seoul Metropolitan Government, Gwachon, Korea
| | - Y Lee
- Culture Collection of Antimicrobial Resistant Microbes, Department of Horticulture, Biotechnology, and Landscape Architecture, Seoul Women's University, Seoul, Korea
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Shin J, Han Y, Shin E, Park H, Choi D, Lim D. EP-1915: Development of video based quality assurance system for the medical linear accelerator. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33166-8] [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: 10/21/2022]
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Weiss C, Arepally A, Paudel K, Singh J, Hu C, Shin E, Anders R, Moran T, Kraitchman D. Bariatric embolization using large calibrated spheres (300-500 μm): safety and long-term efficacy in a swine model. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2015.01.033] [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] Open
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Barkovskii A, Babb C, Hurley D, Shin E. Origins and environmental mobility of antibiotic resistance genes, virulence factors and bacteria in a tidal creek's watershed. J Appl Microbiol 2015; 118:764-76. [DOI: 10.1111/jam.12735] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/03/2014] [Accepted: 12/19/2014] [Indexed: 11/30/2022]
Affiliation(s)
| | - C.M. Babb
- Georgia College & State University; Milledgeville GA USA
| | - D. Hurley
- Sapelo Island National Estuarine Research Reserve; Sapelo Island GA USA
| | - E. Shin
- Georgia College & State University; Milledgeville GA USA
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Baek M, Ahn T, Shin E, Park D, Lee S, Kim I, Kim C, Choi W. 270. AEG-1 is associated with invasion and poor prognosis in colorectal cancer. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.262] [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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36
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Kim J, Shin E, Kim J, Lee H, Kim Y, Kim J, Park D, Kim H, Lee J, Lee K. Impact of the Expression Levels of Fluoropyrimidine Pathway Genes on Treatment Outcomes from Adjuvant S-1 Therapy in Gastric Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.32] [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: 11/14/2022] Open
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Han S, Oh P, Koh K, Lee K, Seo S, Ahn T, Shin E. Obesity paradox still exists after percutaneous coronary intervention independent of metabolic status. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.124] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kim H, Choi C, Lee J, Shin E, Park Y. 622: Immunohistochemical evaluation of the mammalian target of rapamycin pathway in stage I non-small cell lung carcinoma. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50545-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: 10/25/2022]
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Chung K, Kim J, Shin J, Han Y, Ju S, Hong C, Kim D, Kim H, Shin E, Ahn S, Chung S, Choi D. SU-E-T-239: Monte Carlo Modelling of SMC Proton Nozzles Using TOPAS. Med Phys 2014. [DOI: 10.1118/1.4888570] [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] Open
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Ju S, Hong C, Kim M, Chung K, Kim J, Han Y, Ahn S, Chung S, Shin E, Shin J, Kim H, Kim D, Choi D. SU-E-T-195: Gantry Angle Dependency of MLC Leaf Position Error. Med Phys 2014. [DOI: 10.1118/1.4888525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Weiss C, Hu C, Arepally A, Singh J, Beh C, Wang J, Mao H, Shin E, Moran T, Kraitchman D. Bariatric embolization using imaging visible embolic beads, an anti-reflux microcatheter, and cone-beam CT: Short-term outcomes in a swine model. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2014.02.016] [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] Open
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Im JS, Bae TS, Shin E, Lee YS. Electrical resistance behavior of oxyfluorinated graphene under oxidizing and reducing gas exposure. J Nanosci Nanotechnol 2014; 14:2274-2279. [PMID: 24745223 DOI: 10.1166/jnn.2014.8500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The electrical resistance behavior of graphene was studied under oxidizing and reducing gas exposure. The graphene surface was modified via oxyfluorination to obtain a specific surface area and oxygen functional groups. Fluorine radicals provided improved pore structure and introduction of an oxygen functional group. A high-performance gas sensor was obtained based on enlarged target gas adsorption sites and an enhanced electron charge transfer between the target gas and carbon surface via improved pore structure and the introduction of oxygen functional groups, respectively.
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Yovino S, Campian J, Wild A, Grossman S, Sarai G, Gearhart S, Azad N, Hacker-Prietz A, Shin E, Herman J. Sparing Circulating Lymphocyte Populations With Endorectal Brachytherapy. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.883] [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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Shin E, Jo H, Lee S, Chang S, Oh M. P311 A Survey On The Likely Resources Of Guideline Dissemination And The Perceived Barriers To The Utilization In Korea. BMJ Qual Saf 2013. [DOI: 10.1136/bmjqs-2013-002293.251] [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: 11/04/2022]
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Jo H, Chang S, Lee Y, Shin E, Oh M, Oh H. P281 Applying The Re-Aim Framework To Evaluate Dissemination And Implementation Of Clinical Practice Guideline For Sexually Transmitted Infections In Korea. BMJ Qual Saf 2013. [DOI: 10.1136/bmjqs-2013-002293.237] [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: 11/04/2022]
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Lee H, Yoo SA, Shin E, Chong SC. Looking into training effects on visual working memory capacity: With individualized training and performance trends. J Vis 2013. [DOI: 10.1167/13.9.1353] [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: 11/24/2022] Open
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Kim HR, Lim SM, Kim HJ, Hwang SK, Park JK, Shin E, Bae MK, Ou SHI, Wang J, Jewell SS, Kang DR, Soo RA, Haack H, Kim JH, Shim HS, Cho BC. The frequency and impact of ROS1 rearrangement on clinical outcomes in never smokers with lung adenocarcinoma. Ann Oncol 2013; 24:2364-70. [PMID: 23788756 DOI: 10.1093/annonc/mdt220] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND To determine the frequency and predictive impact of ROS1 rearrangements on treatment outcomes in never-smoking patients with lung adenocarcinoma. PATIENTS AND METHODS We concurrently analyzed ROS1 and ALK rearrangements and mutations in the epidermal growth factor receptor (EGFR), and KRAS in 208 never smokers with lung adenocarcinoma. ROS1 and ALK rearrangements were identified by fluorescent in situ hybridization. RESULTS Of 208 tumors screened, 7 (3.4%) were ROS1 rearranged, and 15 (7.2%) were ALK-rearranged. CD74-ROS1 fusions were identified in two patients using reverse transcriptase-polymerase chain reaction. The frequency of ROS1 rearrangement was 5.7% (6 of 105) among EGFR/KRAS/ALK-negative patients. Patients with ROS1 rearrangement had a higher objective response rate (ORR; 60.0% versus 8.5%; P = 0.01) and a longer median progression-free survival (PFS; not reached versus 3.3 months; P = 0.008) to pemetrexed than those without ROS1/ALK rearrangement. The PFS to EGFR-tyrosine kinase inhibitors in patients harboring ROS1 rearrangement was shorter than those without ROS1/ALK rearrangement (2.5 versus 7.8 months; P = 0.01). CONCLUSIONS The frequency of ROS1 rearrangements in clinically selected patients is higher than that reported for unselected patients, suggesting that ROS1 rearrangement is a druggable target in East-Asian never smokers with lung adenocarcinoma. Given the different treatment outcomes to conventional therapies and availability of ROS1 inhibitors, identification of ROS1 rearrangement can lead to successful treatment in ROS1-rearranged lung adenocarcinomas.
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Affiliation(s)
- H R Kim
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
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Sheen H, Han Y, Shin E, Min B, Kim J. SU-E-J-01: Analysis of Acquisition Parameters That Caused Artifacts in Four-Dimensional (4D) CT Images of Targets Undergoing Regular Motion. Med Phys 2012; 39:3652. [PMID: 28517632 DOI: 10.1118/1.4734833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The aim of this study was to clarify the impacts of acquisition parameters on artifacts in four-dimensional computed tomography (4D CT) images, such as the partial volume effect (PVE), partial projection effect (PPE), and mis-matching of initial motion phases between adjacent beds (MMimph) in cine mode scanning. METHODS A thoracic phantom and two cylindrical phantoms (2 cm diameter and heights of 0.5 cm for No. 1 and 10 cm for No.2) were scanned using 4D CT. For the thoracic phantom, acquisition was started automatically in the first scan with 5 sec and 8 sec of gantry rotation, thereby allowing a different phase at the initial projection of each bed. In the second scan, the initial projection at each bed was manually synchronized with the inhalation phase to minimize the MMimph. The third scan was intentionally un-synchronized with the inhalation phase. In the cylindrical phantom scan, one bed (2 cm) and three beds (6 cm) were used for 2 and 6 sec motion periods. Measured target volume to true volume ratios (MsTrueV) were computed. The relationships among MMimph, MsTrueV, and velocity were investigated. RESULTS In the thoracic phantom, shorter gantry rotation provided more precise volume and was highly correlated with velocity when MMimph was minimal. MMimph reduced the correlation. For moving cylinder No. 1, MsTrueV was correlated with velocity, but the larger MMimph for 2 sec of motion removed the correlation. The volume of No. 2 was similar to the static volume due to the small PVE, PPE, and MMimph. CONCLUSIONS Smaller target velocity and faster gantry rotation resulted in a more accurate volume description. The MMimph was the main parameter weakening the correlation between MsTrueV and velocity. Without reducing the MMimph, controlling target velocity and gantry rotation will not guarantee accurate image presentation given current 4D CT technology.
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Affiliation(s)
- H Sheen
- Sungkyunkwan University, Soul.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.,Samsung Medical Center.,National Cancer Center, Goyang-si, Gyeonggi-do
| | - Y Han
- Sungkyunkwan University, Soul.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.,Samsung Medical Center.,National Cancer Center, Goyang-si, Gyeonggi-do
| | - E Shin
- Sungkyunkwan University, Soul.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.,Samsung Medical Center.,National Cancer Center, Goyang-si, Gyeonggi-do
| | - B Min
- Sungkyunkwan University, Soul.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.,Samsung Medical Center.,National Cancer Center, Goyang-si, Gyeonggi-do
| | - J Kim
- Sungkyunkwan University, Soul.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul.,Samsung Medical Center.,National Cancer Center, Goyang-si, Gyeonggi-do
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Ju S, Kim M, Hong C, Yim D, Kim J, Shin D, Lee S, Han Y, Shin J, Shin E, Ahn S, Choi D. SU-E-T-292: New Technique for Developing Proton Range Compensator Using Three-Dimensional Printer. Med Phys 2012; 39:3770-3771. [DOI: 10.1118/1.4735360] [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] Open
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Ju S, Hong C, Yim D, Kim M, Kim J, Han Y, Shin J, Shin E, Ahn S, Choi D. SU-E-J-172: Development of a Video Guided Real-Time Patient Motion Monitoring System for Helical Tomotherpay. Med Phys 2012; 39:3692. [DOI: 10.1118/1.4735011] [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] Open
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