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Author Doo Ryeon Chung

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A case of gonococcal meningitis caused by Neisseria gonorrhoeae MLST ST7363 in a healthy young adult.

Suhyun Oh, Si-Ho Kim, Jin Yang Baek, Kyungmin Huh, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Hee Jae Huh, Nam Yong Lee, Kyong Ran Peck,

A 37-year-old healthy man was admitted with fever, skin rash, migratory arthralgia, and headache without preceding urogenital symptoms. Sexual contact history and positive CSF culture for Neisseria gonorrhoeae using BacT/Alert blood culture bottles were diagnostic for gonococcal meningitis. Multilocus sequence typing of this isolate showed sequence type (ST) 7363, the ... Read more >>

J. Infect. Chemother. (Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy)
[2020, :]

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Weight-based vancomycin loading strategy may not improve achievement of optimal vancomycin concentration in patients with preserved renal function.

Si-Ho Kim, Cheol-In Kang, Soo-Hyun Lee, Joon-Sik Choi, Kyungmin Huh, Sun Young Cho, Doo Ryeon Chung, Hyo Jung Park, Soo-Youn Lee, Yae-Jean Kim, Kyong Ran Peck,

We performed a retrospective study to evaluate clinical effectiveness of vancomycin loading strategy and factors associated with achieving optimal Cmin. Patients administered vancomycin for ≥72 h from January to June 2018 were enrolled. Patients were divided into two groups: loading (LD) and non-loading (NLD). LD was defined as initial vancomycin dose ... Read more >>

J Chemother (Journal of chemotherapy (Florence, Italy))
[2020, :1-6]

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Severe Thrombocytopenia in a Patient with COVID-19.

Eliel Nham, Jae Hoon Ko, Byeong Ho Jeong, Kyungmin Huh, Sun Young Cho, Cheol In Kang, Doo Ryeon Chung, Kyong Ran Peck,

Coronavirus disease 2019 (COVID-19) outbreak is spreading rapidly all over the world, being a major threat to public health. Since clinical feature of COVID-19 has not been fully evaluated yet, empirical antibacterial agents are frequently combined for the treatment of COVID-19 in addition to antiviral agents, concerning co-existing bacterial pathogens. ... Read more >>

Infect Chemother (Infection & chemotherapy)
[2020, :]

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Risk factors for development and mortality of invasive pulmonary Aspergillosis in kidney transplantation recipients.

Hyeri Seok, Kyungmin Huh, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Woo Seong Huh, Jae Berm Park, Kyong Ran Peck,

Invasive pulmonary aspergillosis (IPA) is a high mortality opportunistic infection among kidney transplant recipients. This study assessed the risk factors and outcomes of IPA after KT. A retrospective study was conducted at a tertiary-care referral hospital in Korea. Electronic medical records of patients diagnosed with IPA after KT between February ... Read more >>

Eur. J. Clin. Microbiol. Infect. Dis. (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology)
[2020, :]

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Clinical factors influencing the performance of bacterial multiplex polymerase chain reaction in patients with community-onset pneumonia.

Ga Eun Park, Kyong Ran Peck, Jae-Hoon Ko, Cheol-In Kang, Sun Young Cho, Doo Ryeon Chung, Nam Yong Lee,

The etiologic diagnostic yield of community-onset pneumonia (COP) using conventional methods is low. Bacterial multiplex polymerase chain reaction (mPCR) has been shown to be more sensitive than conventional methods. This study assessed the clinical factors influencing bacterial mPCR results in patients with COP. Patients with COP admitted to a tertiary ... Read more >>

Eur. J. Clin. Microbiol. Infect. Dis. (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology)
[2020, :]

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Nanoplasmonic On-Chip PCR for Rapid Precision Molecular Diagnostics.

Youngseop Lee, Byoung-Hoon Kang, Minhee Kang, Doo Ryeon Chung, Gwan-Su Yi, Luke P Lee, Ki-Hun Jeong,

Emerging molecular diagnosis requires ultrafast polymerase chain reaction (PCR) on chip for rapid precise detection of infectious diseases in the point-of-care test. Here, we report nanoplasmonic on-chip PCR for rapid precision molecular diagnostics. The nanoplasmonic pillar arrays (NPA) comprise gold nanoislands on the top and sidewall of large-scale glass nanopillar ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2020, 12(11):12533-12540]

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Emergence of vancomycin-resistant Enterococcus faecium ST1421 lacking the pstS gene in Korea.

Hye Mee Kim, Doo Ryeon Chung, Sun Young Cho, Kyungmin Huh, Cheol-In Kang, Kyong Ran Peck,

Although multilocus sequence typing (MLST) has been used to study molecular epidemiology and to explore the population structure of Enterococcus faecium, vancomycin-resistant E. faecium (VREF) strains lacking the pstS gene that were non-typable using conventional MLST methods were reported recently. We found nationwide emergence of VREF isolates lacking pstS in ... Read more >>

Eur. J. Clin. Microbiol. Infect. Dis. (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology)
[2020, :]

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Characteristics and Clinical Outcomes of Extended-Spectrum beta-lactamase-producing Klebsiella pneumoniae Bacteremia in Cancer Patients.

Eliel Nham, Kyungmin Huh, Sun Young Cho, Doo Ryeon Chung, Kyong Ran Peck, Nam Yong Lee, Cheol In Kang,

Cancer patients can be at a higher risk of infection due to drug-resistant bacteria than the general population for various reasons. We performed a retrospective study to evaluate possible risk factors and outcomes of extended-spectrum beta-lactamase-producing Klebsiella pneumoniae (ESBL-KP) bacteremia in cancer patients. Cases were divided into two groups based ... Read more >>

Infect Chemother (Infection & chemotherapy)
[2020, 52(1):59-69]

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Impact of difficult-to-treat resistance in gram-negative bacteremia on mortality: retrospective analysis of nationwide surveillance data.

Kyungmin Huh, Doo Ryeon Chung, Young Eun Ha, Jae-Hoon Ko, Si-Ho Kim, Min-Ji Kim, Hee Jae Huh, Nam Yong Lee, Sun Young Cho, Cheol-In Kang, Kyong Ran Peck, Jae-Hoon Song, ,

BACKGROUND:Clinically relevant categorization of antimicrobial resistance is critical to mitigating the threat it poses. Difficult-to-treat resistance (DTR) is a recently proposed category defined as non-susceptibility to all first-line antibiotic agents. METHODS:A retrospective study was conducted with non-duplicate cases of gram-negative bloodstream infection (GNBSI) caused by four major taxa (Escherichia coli, ... Read more >>

Clin. Infect. Dis. (Clinical infectious diseases : an official publication of the Infectious Diseases Society of America)
[2020, :]

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Hypervirulent Klebsiella pneumoniae: Liver Abscess Isolates versus Intestinal Flora.

Doo Ryeon Chung,

J. Korean Med. Sci. (Journal of Korean medical science)
[2020, 35:e28]

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Comparison of 16S Ribosomal RNA Targeted Sequencing and Culture for Bacterial Identification in Normally Sterile Body Fluid Samples: Report of a 10-Year Clinical Laboratory Review.

In Young Yoo, On Kyun Kang, Myoung Keun Lee, Yae Jean Kim, Sun Young Cho, Kyungmin Huh, Cheol In Kang, Doo Ryeon Chung, Kyong Ran Peck, Hee Jae Huh, Nam Yong Lee,

As 16S ribosomal RNA (rRNA)-targeted sequencing can detect DNA from non-viable bacteria, it can be used to identify pathogens from clinical samples even in patients pretreated with antibiotics. We compared the results of 16S rRNA-targeted sequencing and culture for identifying bacterial species in normally sterile body fluid (NSBF): cerebrospinal, pericardial, ... Read more >>

Ann Lab Med (Annals of laboratory medicine)
[2020, 40(1):63-67]

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Co-introduction of plasmids harbouring the carbapenemase genes, blaNDM-1 and blaOXA-232, increases fitness and virulence of bacterial host.

Haejeong Lee, Juyoun Shin, Yeun-Jun Chung, Myungseo Park, Kyeong Jin Kang, Jin Yang Baek, Dongwoo Shin, Doo Ryeon Chung, Kyong Ran Peck, Jae-Hoon Song, Kwan Soo Ko,

BACKGROUND:Bacterial isolates with multiple plasmids harbouring different carbapenemase genes have emerged and been identified repeatedly, despite a general notion that plasmids confer fitness cost in bacterial host. In this study, we investigated the effects of plasmids with carbapenemase genes on the fitness and virulence of bacteria. METHODS:Different plasmids harbouring the ... Read more >>

J. Biomed. Sci. (Journal of biomedical science)
[2020, 27(1):8]

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Modern History of Tuberculosis in Korea.

Jae Hoon Song, Kyungmin Huh, Doo Ryeon Chung,

Tuberculosis has been a major public health threat in modern Korea. A few reports from the mid-1940s have demonstrated a high prevalence of latent and active tuberculosis infections. The high disease burden urged the newly established government to place a high priority on tuberculosis control. The government led a nationwide ... Read more >>

Infect Chemother (Infection & chemotherapy)
[2019, 51(4):414-426]

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A Simple and Multiplex Loop-Mediated Isothermal Amplification (LAMP) Assay for Rapid Detection of SARS-CoV.

Jin Hwa Kim, Minhee Kang, Eunkyoung Park, Doo Ryeon Chung, Jiyeon Kim, Eung Soo Hwang,

The current diagnosis of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) relies on laboratory-based tests since its clinical features are nonspecific, unlike other respiratory pathogens. Therefore, the development of a rapid and simple method for on-site detection of SARS-CoV is crucial for the identification and prevention of future SARS outbreaks. In ... Read more >>

Biochip J (Biochip journal)
[2019, 13(4):341-351]

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Antifungal prophylaxis with posaconazole tablet and oral suspension in patients with haematologic malignancy: Therapeutic drug monitoring, efficacy and risk factors for the suboptimal level.

Jihyu Oh, Cheol-In Kang, Si-Ho Kim, Kyungmin Huh, Sun Young Cho, Doo Ryeon Chung, Soo-Youn Lee, Chul Won Jung, Kyong Ran Peck,

BACKGROUND:Posaconazole is used to prevent invasive fungal infections (IFIs) in patients with haematologic malignancy. In this study, we compared plasma posaconazole concentrations (PPCs) and the incidence of breakthrough IFIs between patients with haematologic malignancy receiving posaconazole oral suspension vs tablet. METHODS:We retrospectively collected data on adult patients with haematologic malignancies ... Read more >>

Mycoses (Mycoses)
[2020, 63(1):89-94]

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581. The Epidemiology of Imipenem-Resistant Acinetobacter baumannii Bacteremia in a Pediatric Intensive Care Unit and Carbapenem Use.

Dongsub Kim, Haejeong Lee, Christina M Croney, Ki Sup Park, Hyo Jung Park, Joongbum Cho, Kwan Soo Ko, Jinyeong Kim, Sohee Son, Joon-sik Choi, Soo-Han Choi, Heejae Huh, Doo Ryeon Chung, Nam Yong Lee, Yae-Jean Kim,

AbstractBackground Acinetobacter baumannii (AB) infections cause high mortality and morbidity in intensive care unit patients. There are limited data on the epidemiology of imipenem-resistant A. baumannii (IRAB) amongst pediatric ICU patients.MethodsA retrospective chart review was performed in patients with AB bacteremia in a pediatric intensive care unit at a tertiary ... Read more >>

Open Forum Infect Dis (Open forum infectious diseases)
[2019, 6(Suppl 2):S274-S275]

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Changes in serotype distribution and antimicrobial resistance of Streptococcus pneumoniae isolates from adult patients in Asia: Emergence of drug-resistant non-vaccine serotypes.

So Hyun Kim, Doo Ryeon Chung, Jae-Hoon Song, Jin Yang Baek, Visanu Thamlikitkul, Hui Wang, Celia Carlos, Norazah Ahmad, Revathy Arushothy, Si Huei Tan, David Lye, Cheol-In Kang, Kwan Soo Ko, Kyong Ran Peck, ,

This study was performed to investigate the serotype distribution and antimicrobial susceptibility of Streptococcus pneumoniae in Asian countries. A prospective surveillance study on S. pneumoniae collected from adult patients (≥50 years old) with invasive pneumococcal disease or community-acquired pneumonia was performed at 66 hospitals in Asian countries (Korea, China, Malaysia, Singapore, ... Read more >>

Vaccine (Vaccine)
[2019, :]

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1701. Differences in Diagnostic Performance of β-d-Glucan Testing in Patients with Varying Degrees of Susceptibility to Invasive Fungal Infections.

Eliel Nham, Si-Ho Kim, Hyunjoo Lee, Jae-Hoon Ko, Kyungmin Huh, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Kyong Ran Peck,

AbstractBackgroundUsefulness of β-d-glucan (BDG) testing in high-risk patients for invasive fungal infection (IFI) diagnosis has been well demonstrated. However, data on its usefulness in patients without risk factors are limited. We evaluated differences in the diagnostic performance of BDG testing in patients with varying degrees of susceptibility to IFI.MethodsFrom April ... Read more >>

Open Forum Infect Dis (Open forum infectious diseases)
[2019, 6(Suppl 2):S623-S623]

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228. Early Recurrent Postoperative Bloodstream infections in Living-Donor Liver Transplant Recipients.

Si-Ho Kim, Seokjun Mun, Hyunjoo Lee, Eliel Nam, Kyungmin Huh, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Kyong Ran Peck,

AbstractBackgroundBloodstream infections (BSIs) represent a poor prognosis in living-donor liver transplant recipients (LDLT-Rs). Some patients develop recurrent BSIs. We evaluated the impacts of ER-BSIs on outcomes in LDLT-Rs.MethodsAll LDLT-Rs with follow-up data between January 2008 and December 2016 were included. Early BSIs (E-BSIs) defined as BSI events within 2 months ... Read more >>

Open Forum Infect Dis (Open forum infectious diseases)
[2019, 6(Suppl 2):S132-S132]

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Correction to Development of Label-Free Colorimetric Assay for MERS-CoV Using Gold Nanoparticles.

Hanbi Kim, Minseon Park, Joonki Hwang, Jin Hwa Kim, Doo-Ryeon Chung, Kyu-Sung Lee, Minhee Kang,

ACS Sens (ACS sensors)
[2019, 4(9):2554]

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Clinical effectiveness of oral antimicrobial therapy for acute pyelonephritis caused by extended-spectrum β-lactamase-producing Enterobacteriales.

Si-Ho Kim, Kyoung Ree Lim, Hyunju Lee, Kyungmin Huh, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Kyong Ran Peck,

Infections caused by extended-spectrum β-lactamase-producing Enterobacteriales (ESBL-PE) are commonly treated with intravenous antibiotics. This study investigated whether oral antimicrobial therapy (OAT) is as effective as intravenous antimicrobial therapy (IVT) for acute pyelonephritis (APN) caused by ESBL-PE. A retrospective cohort of patients with APN caused by ESBL-PE was studied at a ... Read more >>

Eur. J. Clin. Microbiol. Infect. Dis. (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology)
[2020, 39(1):159-167]

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Evaluating the optimal dose of teicoplanin with therapeutic drug monitoring: not too high for adverse event, not too low for treatment efficacy.

Si-Ho Kim, Cheol-In Kang, Kyungmin Huh, Sun Young Cho, Doo Ryeon Chung, Soo-Youn Lee, Yae-Jean Kim, Kyong Ran Peck,

Therapeutic drug monitoring (TDM) of teicoplanin is aimed at minimizing the clinical impact of pharmacokinetic variability; however, its benefits are still being defined. We performed a retrospective study of teicoplanin TDM focusing on the dose-serum concentration relationship and clinical outcomes in a clinical setting. From January 2017 to December 2018, ... Read more >>

Eur. J. Clin. Microbiol. Infect. Dis. (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology)
[2019, 38(11):2113-2120]

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Correction: A new point-of-care test for the diagnosis of infectious diseases based on multiplex lateral flow immunoassays.

Hanbi Kim, Doo-Ryeon Chung, Minhee Kang,

Correction for 'A new point-of-care test for the diagnosis of infectious diseases based on multiplex lateral flow immunoassays' by Hanbi Kim et al., Analyst, 2019, 144, 2460-2466. ... Read more >>

Analyst (The Analyst)
[2019, 144(17):5308]

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Quantitative Serodiagnosis of Scrub Typhus Using Surface-Enhanced Raman Scattering-Based Lateral Flow Assay Platforms.

See Hi Lee, Joonki Hwang, Kihyun Kim, Jinhyeok Jeon, Sangyeop Lee, Juhui Ko, Jichul Lee, Minhee Kang, Doo Ryeon Chung, Jaebum Choo,

A surface-enhanced Raman scattering-based lateral flow assay (SERS-LFA) technique has been developed for the rapid and accurate diagnosis of scrub typhus. Lateral flow kits for the detection of O. tsutsugamushi IgG (scrub typhus biomarker) were fabricated, and the calibration curve for various standard clinical sera concentrations were obtained by Raman ... Read more >>

Anal. Chem. (Analytical chemistry)
[2019, 91(19):12275-12282]

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Effects of environmental disinfection on the isolation of vancomycin-resistant Enterococcus after a hospital-associated outbreak of Middle East respiratory syndrome.

Jae-Hoon Ko, Si-Ho Kim, Nam Yong Lee, Yae-Jin Kim, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Kyong Ran Peck,

Environmental disinfection with sodium hypochlorite and hydrogen peroxide vapor was performed after a hospital-associated outbreak of Middle East respiratory syndrome. Although only 11% of total beds were disinfected, the isolation and vancomycin-resistance rates of Enterococcus spp significantly decreased for 2 months, whereas other multidrug-resistant organisms did not. ... Read more >>

Am J Infect Control (American journal of infection control)
[2019, 47(12):1516-1518]

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