Full Text Journal Articles by
Author Nam Yong Lee

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First Case of Bacteremia Caused by Coprobacillus catenaformis.

Won Young Heo, Jong Kwon Lee, Yoo Na Chung, In Young Yoo, On-Kyun Kang, Duk Hyun Sung, Sun Young Cho, Hee Jae Huh, Nam Yong Lee,

Ann Lab Med (Annals of laboratory medicine)
[2020, 40(5):421-423]

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Comparison Between the SFTS-QS Kit and the PowerChek SFTSV Real-time PCR Kit for the Detection of Severe Fever With Thrombocytopenia Syndrome Virus.

In Young Yoo, Ji Youn Kim, Young Kyung Yoon, Hee Jae Huh, Nam Yong Lee,

The recent increase in severe fever with thrombocytopenia syndrome (SFTS) cases has led to the development of the SFTS-QS kit (MiCoBioMed, Seongnam, Korea) for detecting the SFTS virus (SFTSV, now renamed Huaiyangshan banyangvirus). SFTS-QS is a qualitative real-time reverse transcription PCR assay based on lab-on-a-chip technology. We evaluated the performance ... Read more >>

Ann Lab Med (Annals of laboratory medicine)
[2020, 40(4):317-320]

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Cefepime Versus Cefepime Plus Amikacin as an Initial Antibiotic Choice for Pediatric Cancer Patients With Febrile Neutropenia in an Era of Increasing Cefepime Resistance.

Na Hee Lee, Ji-Man Kang, Ji Won Lee, Hee Jae Huh, Nam Yong Lee, Keon Hee Yoo, Ki Woong Sung, Hong Hoe Koo, Yae-Jean Kim,

BACKGROUND:We investigated the treatment outcomes before and after the addition of amikacin to cefepime monotherapy as an initial empirical antibiotic treatment in pediatric cancer patients with febrile neutropenia. METHODS:This was a retrospective historical cohort study. The subjects were pediatric cancer patients who visited the emergency room at the Samsung Medical ... Read more >>

Pediatr. Infect. Dis. J. (The Pediatric infectious disease journal)
[2020, :]

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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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Evaluation of the BioFire FilmArray Pneumonia Panel for rapid detection of respiratory bacterial pathogens and antibiotic resistance genes in sputum and endotracheal aspirate specimens.

In Young Yoo, Kyungmin Huh, Hyang Jin Shim, Sun Ae Yun, Yoo Na Chung, On Kyun Kang, Hee Jae Huh, Nam Yong Lee,

OBJECTIVES:The performance of the investigational-use-only version of the BioFire FilmArray Pneumonia Panel (FA-Pneumo), a high-order nested multiplex PCR, was evaluated for the detection of typical respiratory bacterial pathogens and antibiotic resistance genes in sputa and endotracheal aspirate (ETA) specimens. METHODS:Thirty-one sputa and 69 ETA specimens were analyzed. The diagnostic performance ... Read more >>

Int. J. Infect. Dis. (International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases)
[2020, 95:326-331]

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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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A nonsense variant in NME5 causes human primary ciliary dyskinesia with radial spoke defects.

Eun Hye Cho, Hee Jae Huh, Inyoung Jeong, Nam Yong Lee, Won-Jung Koh, Hae-Chul Park, Chang-Seok Ki,

Primary ciliary dyskinesia (PCD) is a genetically heterogeneous disorder characterized by defects in the function or structure of motitle cilia. In most cases, causative variants result in axonemal dynein arm anomalies, however, PCD due to radial spoke (RS) and central pair (CP) of microtubules has been rarely reported. To identify ... Read more >>

Clin. Genet. (Clinical genetics)
[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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Diagnostic Performance of the GENEDIA MTB/NTM Detection Kit for Detecting Mycobacterium tuberculosis and Nontuberculous Mycobacteria With Sputum Specimens.

Sunghwan Shin, In Young Yoo, Hyang Jin Shim, On Kyun Kang, Byung Woo Jhun, Won Jung Koh, Hee Jae Huh, Nam Yong Lee,

The GENEDIA MTB/NTM Detection Kit (GENEDIA MTB/NTM; Green Cross Medical Science Corp., Chungbuk, Korea) is a multiplex real-time PCR assay used for differential identification of Mycobacterium tuberculosis complex (MTBC) and nontuberculous mycobacteria (NTM). While the importance of differential identification of MTB/NTM is recognized, there is limited data on the performance ... Read more >>

Ann Lab Med (Annals of laboratory medicine)
[2020, 40(2):169-173]

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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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Linezolid Resistance in Methicillin-Resistant Staphylococcus aureus in Korea: High Rate of False Resistance to Linezolid by the VITEK 2 System.

In Young Yoo, On Kyun Kang, Hyang Jin Shim, Hee Jae Huh, Nam Yong Lee,

As various linezolid resistance mechanisms have been identified in methicillin-resistant Staphylococcus aureus (MRSA), we investigated the molecular characteristics of MRSA with elevated linezolid minimum inhibitory concentrations (MICs), using the VITEK 2 system (bioMérieux, Marcy-l'Étoile, France). Twenty-seven MRSA isolates from 14 patients exhibiting linezolid MICs ≥8 μg/mL were examined by broth ... Read more >>

Ann Lab Med (Annals of laboratory medicine)
[2020, 40(1):57-62]

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Intermittent Treatment with Azithromycin and Ethambutol for Noncavitary Mycobacterium avium Complex Pulmonary Disease.

Seong Mi Moon, In Young Yoo, Hee Jae Huh, Nam Yong Lee, Byung Woo Jhun,

We evaluated the efficacy of intermittent azithromycin and ethambutol therapy for noncavitary Mycobacterium avium complex pulmonary disease (MAC-PD). Twenty-nine (76%) of 38 patients achieved sputum culture conversion after 12 months of treatment, and sputum smear positivity was an independent factor for failure to achieve culture conversion (adjusted odds ratio, 26.7; 95% ... Read more >>

Antimicrob. Agents Chemother. (Antimicrobial agents and chemotherapy)
[2019, 64(1):]

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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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Prognostic factors associated with long-term mortality in 1445 patients with nontuberculous mycobacterial pulmonary disease: a 15-year follow-up study.

Byung Woo Jhun, Seong Mi Moon, Kyeongman Jeon, O Jung Kwon, Heejin Yoo, Keumhee C Carriere, Hee Jae Huh, Nam Yong Lee, Sung Jae Shin, Charles L Daley, Won-Jung Koh,

Limited data are available regarding the prognostic factors for patients with nontuberculous mycobacterial pulmonary disease (NTM-PD). We investigated the prognostic factors associated with long-term mortality in NTM-PD patients after adjusting for individual confounders, including aetiological organism and radiological form.A total of 1445 patients with treatment-naïve NTM-PD who were newly diagnosed ... Read more >>

Eur. Respir. J. (The European respiratory journal)
[2020, 55(1):]

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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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Clinical Characteristics and Outcomes of Surgically Resected Solitary Pulmonary Nodules Due to Nontuberculous Mycobacterial Infections.

Yeonseok Choi, Byung Woo Jhun, Jhingook Kim, Hee Jae Huh, Nam Yong Lee,

BACKGROUND:Limited data are available regarding the detailed characteristics and outcomes of surgically resected nontuberculous mycobacterial (NTM) granulomas. METHODS:We evaluated the characteristics of 49 NTM granulomas presenting as solitary pulmonary nodules (SPNs) between January 2007 and December 2016. RESULTS:Twenty-five patients (51%) were male and 27 (55%) were never-smokers. Seven (14%) patients ... Read more >>

J Clin Med (Journal of clinical medicine)
[2019, 8(11):]

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First Isolation of Mycobacterium virginiense From a Human Pulmonary Specimen.

Jaewan Jung, In Young Yoo, Byung Woo Jhun, Won Jung Koh, Nam Yong Lee, Hee Jae Huh,

Ann Lab Med (Annals of laboratory medicine)
[2019, 39(6):596-598]

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Clinical Significance of Isolates Known to Be Blood Culture Contaminants in Pediatric Patients.

Sejong Chun, Cheol-In Kang, Yae-Jean Kim, Nam Yong Lee,

Background and objectives: The objective of this study was to investigate the clinical significance of isolates from blood stream infection known to be blood culture contaminants in pediatric patients. Materials and Methods: Microbiological reports and medical records of all blood culture tests issued from 2002 to 2012 (n = 76,331) ... Read more >>

Medicina (Kaunas) (Medicina (Kaunas, Lithuania))
[2019, 55(10):]

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In Vitro Activity of Bedaquiline and Delamanid against Nontuberculous Mycobacteria, Including Macrolide-Resistant Clinical Isolates.

Dae Hun Kim, Byung Woo Jhun, Seong Mi Moon, Su-Young Kim, Kyeongman Jeon, O Jung Kwon, Hee Jae Huh, Nam Yong Lee, Sung Jae Shin, Charles L Daley, Won-Jung Koh,

We evaluated the in vitro activities of the antimicrobial drugs bedaquiline and delamanid against the major pathogenic nontuberculous mycobacteria (NTM). Delamanid showed high MIC values for all NTM except Mycobacterium kansasii However, bedaquiline showed low MIC values for the major pathogenic NTM, including Mycobacterium avium complex, Mycobacterium abscessus subsp. abscessus, ... Read more >>

Antimicrob. Agents Chemother. (Antimicrobial agents and chemotherapy)
[2019, 63(8):]

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GenoType NTM-DR Performance Evaluation for Identification of Mycobacterium avium Complex and Mycobacterium abscessus and Determination of Clarithromycin and Amikacin Resistance.

Hee Jae Huh, Su-Young Kim, Hyang Jin Shim, Dae Hun Kim, In Young Yoo, On-Kyun Kang, Chang-Seok Ki, So Youn Shin, Byung Woo Jhun, Sung Jae Shin, Charles L Daley, Won-Jung Koh, Nam Yong Lee,

We evaluated the GenoType NTM-DR (NTM-DR) line probe assay for identifying Mycobacterium avium complex (MAC) species and Mycobacterium abscessus subspecies and for determining clarithromycin and amikacin resistance. Thirty-eight reference strains and 145 clinical isolates (58 MAC and 87 M. abscessus isolates), including 54 clarithromycin- and/or amikacin-resistant strains, were involved. The ... Read more >>

J. Clin. Microbiol. (Journal of clinical microbiology)
[2019, 57(8):]

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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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Poor prognosis of Candida tropicalis among non-albicans candidemia: a retrospective multicenter cohort study, Korea.

Jae-Hoon Ko, Dong Sik Jung, Ji Yeon Lee, Hyun Ah Kim, Seong Yeol Ryu, Sook-In Jung, Eun-Jeong Joo, Shinhye Cheon, Yeon-Sook Kim, Shin-Woo Kim, Sun Young Cho, Cheol-In Kang, Doo Ryeon Chung, Nam Yong Lee, Kyong Ran Peck,

To evaluate clinical features and prognostic factors of non-albicans candidemia, we conducted a retrospective multicenter cohort study at 7 university hospitals in Korea from January 2010 to February 2016. A total of 721 patients with non-albicans candidemia were included in the analysis. C. tropicalis was most commonly identified (36.5%), followed ... Read more >>

Diagn. Microbiol. Infect. Dis. (Diagnostic microbiology and infectious disease)
[2019, 95(2):195-200]

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Treatment of community-onset pneumonia in neutropenic cancer patients: β-lactam monotherapy versus combination antibiotic regimens.

Hyeri Seok, Jae-Hoon Ko, Kyong Ran Peck, Ji-Yeon Kim, Ji Hye Lee, Ga Eun Park, Sun Young Cho, Cheol-In Kang, Nam Yong Lee, Doo Ryeon Chung,

Background:Although β-lactam monotherapy may be sufficient in non-critically ill patients with community-acquired pneumonia, the value of combination antibiotic regimens in community-onset neutropenic pneumonia remains unclear. Methods:A retrospective cohort study was conducted to compare the effects of combination antibiotic regimens to those of β-lactam monotherapy in cancer patients with community-onset neutropenic ... Read more >>

Pneumonia (Nathan) (Pneumonia (Nathan Qld.))
[2019, 11:2]

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Species Distribution and Macrolide Susceptibility of Mycobacterium fortuitum Complex Clinical Isolates.

Su-Young Kim, Seong Mi Moon, Byung Woo Jhun, O Jung Kwon, Hee Jae Huh, Nam Yong Lee, Seung Heon Lee, Sung Jae Shin, Shannon H Kasperbauer, Gwen A Huitt, Charles L Daley, Won-Jung Koh,

The understanding of species distribution and inducible macrolide resistance in the Mycobacterium fortuitum complex (MFC) is limited. Of 90 mostly respiratory MFC clinical isolates, half were M. fortuitum, followed by M. peregrinum, M. porcinum, M. septicum, and M. conceptionense Most M. fortuitum, M. por cinum, and M. septicum isolates were ... Read more >>

Antimicrob. Agents Chemother. (Antimicrobial agents and chemotherapy)
[2019, 63(6):]

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Rapid and label-free identification of individual bacterial pathogens exploiting three-dimensional quantitative phase imaging and deep learning

Geon Kim, Daewoong Ahn, Minhee Kang, YoungJu Jo, Donghun Ryu, Hyeonjung Kim, Jinyeop Song, Jea Sung Ryu, Gunho Choi, Hyun Jung Chung, Kyuseok Kim, Doo Ryeon Chung, In Young Yoo, Hee Jae Huh, Hyunseok Min, Nam Yong Lee, YongKeun Park,

ABSTRACT For appropriate treatments of infectious diseases, rapid identification of the pathogens is crucial. Here, we developed a rapid and label-free method for identifying common bacterial pathogens as individual bacteria by using three-dimensional quantitative phase imaging and deep learning. We achieved 95% accuracy in classifying 19 bacterial species by exploiting ... Read more >>

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