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Ji-yun Bae

Ewha Womans University · Medicine

About the Lab

Professor Ji-yun Bae's research lab focuses on infectious diseases, particularly antimicrobial resistance and bacterial pathogenesis, with a strong emphasis on clinical microbiology and infection control. The lab investigates novel antimicrobial agents such as endolysins (e.g., SAL200) for treating drug-resistant pathogens like *Staphylococcus aureus*, and explores the pathogenesis and outcomes of severe infections including *Clostridium difficile* infection, carbapenem-resistant *Acinetobacter baumannii* (CRAB), and neonatal sepsis. The lab also conducts seroprevalence and vaccination studies in healthcare workers, highlighting its commitment to infection prevention and public health interventions. Their work bridges basic microbiology with clinical outcomes, aiming to improve patient management and infection control strategies in hospital settings.

antimicrobial resistanceinfectious diseasesclinical microbiologyinfection controlnovel antimicrobials

Research Overview

Papers
47
Total Citations
439
Papers (5y)
19
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
19total
2021
2022
2023
2024
2025
Citations per year (5y)
225total
20212022202320242025

Selected Papers

15
1
Review|136 citations·2022
Antibacterial activities of polyphenols against foodborne pathogens and their application as antibacterial agents
Ji Yun Bae, Yeon-Hee Seo, Se‐Wook Oh
SJR Q2Food Science and BiotechnologyOA
BiomaterialsMaterials Science
2
Article|46 citations·2019
Efficacy of Intranasal Administration of the Recombinant Endolysin SAL200 in a Lethal Murine Staphylococcus aureus Pneumonia Model
Ji Yun Bae, Kang Il Jun, Chang Kyung Kang, Kyoung‐Ho Song, Pyoeng Gyun Choe, Ji Hwan Bang, Eu Suk Kim, Sang‐Won Park, Hong Bin Kim, Nam Joong Kim, Wan Beom Park, Myoung‐don Oh
SJR Q1Antimicrobial Agents and ChemotherapyOA

SAL200 is derived from a phage endolysin and is a novel candidate drug for the treatment of Staphylococcus aureus infection. We investigated the efficacy of the recombinant endolysin SAL200 in a lethal murine pneumonia model.

Infectious DiseasesMedicine
3
Article|42 citations·2018
Comparison of pyogenic postoperative and native vertebral osteomyelitis
Uh Jin Kim, Ji Yun Bae, Seong Eun Kim, Chung-Jong Kim, Seung‐Ji Kang, Hee‐Chang Jang, Sook‐In Jung, Kyoung‐Ho Song, Eu Suk Kim, Hong Bin Kim, Wan Beom Park, Nam Joong Kim
SJR Q1The Spine Journal
SurgeryMedicine
4
Article|32 citations·2022
Risk factors for early mortality in patients with carbapenem-resistant Acinetobacter baumannii bacteraemia
Chan Mi Lee, Chung-Jong Kim, Seong Eun Kim, Kyung Hwa Park, Ji Yun Bae, Hee Jung Choi, Younghee Jung, Seung Soon Lee, Pyoeng Gyun Choe, Wan Beom Park, Eu Suk Kim, Je Eun Song
SJR Q2Journal of Global Antimicrobial ResistanceOA

Our results suggest that a large proportion of CRAB bacteraemia with high severity progresses to a rapidly fatal course, regardless of the underlying diseases or source of infection. Further studies might be needed to investigate the microbiological factors associated with CRAB and pathogen-host interaction in patients with EM.

Molecular MedicineBiochemistry, Genetics and Molecular Biology
5
Article|21 citations·2020
Risk factors of delayed isolation of patients with pulmonary tuberculosis
C.-J. Kim, Yoonsoo Kim, Ji Yun Bae, A. Kim, Jinhyuk Kim, Hee Jung Son, Hee Jung Choi
SJR Q1Clinical Microbiology and InfectionOA
Infectious DiseasesMedicine
6
Article|19 citations·2018
Risk factors for poor outcome in community-onset Clostridium difficile infection
Eunyoung Lee, Kyoung‐Ho Song, Ji Yun Bae, Doran Yoon, Joo‐Hee Hwang, Pyoeng Gyun Choe, Wan Beom Park, Ji Hwan Bang, Eu Suk Kim, Sang‐Won Park, Nam Joong Kim, Myoung‐don Oh
SJR Q1Antimicrobial Resistance and Infection ControlOA

Abstract Background A substantial portion of Clostridium difficile infection (CDI) cases occur in communities, and community-onset CDI (CO-CDI) can lead to serious complications including mortality. This study aimed to identify the risk factors for a poor outcome in CO-CDI. Methods We performed a retrospective review of all inpatients with CDI, in a 1300-bed tertiary-care hospital in Korea, from 2008 through 2015. CO-CDI was defined as CDI occurring within 48 h of admission. Poor outcome was def

Infectious DiseasesMedicine
7
Article|18 citations·2021
Risk of Absence of Measles Antibody in Healthcare Personnel and Efficacy of Booster Vaccination
Chung-Jong Kim, Ji Yun Bae, Kang Il Jun, Hae‐Sun Chung, Aeyeon Kim, Jihee Kim, Hee Jung Son, Miae Lee, Hee Jung Choi
SJR Q1VaccinesOA

We aimed to identify the presence of the measles IgG antibody (mIgG-Ab) in healthcare personnel and finding out who needs the measles vaccination. The history of measles vaccination was obtained from the national vaccine registry. A baseline mIgG-Ab test was performed, and the measles vaccine was administered to participants who tested negative or equivocal for mIgG-Abs. During the study, 2885 (87.3%) of the 3303 employees were tested for measles serostatus. The baseline seropositivity rate for

EpidemiologyMedicine
8
Article|16 citations·2018
Active surveillance for carbapenem-resistant Enterobacteriaceae, vancomycin-resistant enterococci and toxigenic Clostridium difficile among patients transferred from long-term care facilities in Korea
J-H. Hwang, Joong Shin Park, Eunyoung Lee, Ji Yun Bae, K-H. Song, Pyoeng Gyun Choe, Wan Beom Park, Joonho Bang, E.S. Kim, S.W. Park, Nayoung Kim, Myungjin Oh
SJR Q1Journal of Hospital Infection
Infectious DiseasesMedicine
9
Article|15 citations·2018
Sudden Deaths of Neonates Receiving Intravenous Infusion of Lipid Emulsion Contaminated with Citrobacter freundii
Ji Yun Bae, Chang Kyung Kang, Su Jin Choi, Eunyoung Lee, Pyoeng Gyun Choe, Wan Beom Park, Nam Joong Kim, Eui-Chong Kim, Myoung‐don Oh
SJR Q2Journal of Korean Medical ScienceOA

At an intensive care unit, four neonates died consecutively within 80 minutes. Citrobacter freundii was isolated from blood samples of the 4 patients. It was also cultured from the leftover SMOFlipid that had been infused intravenously into the patients. In this in vitro study, we evaluated the bacterial growth kinetics and change in size of fat globules in SMOFlipid contaminated with C. freundii. Following the growth of bacteria, pH of SMOFlipid decreased to < 6, and the number of fat globules

Nutrition and DieteticsNursing
10
Article|13 citations·2018
Effect of an intervention targeting inappropriate continued empirical parenteral vancomycin use: a quasi-experimental study in a region of high MRSA prevalence
Pyoeng Gyun Choe, Hei Lim Koo, Doran Yoon, Ji Yun Bae, Eunyoung Lee, Joo‐Hee Hwang, Kyoung‐Ho Song, Wan Beom Park, Ji Hwan Bang, Eu Suk Kim, Hong Bin Kim, Sang‐Won Park
SJR Q1BMC Infectious DiseasesOA

BACKGROUND: Despite vancomycin use is a major risk factor for the emergence of vancomycin resistance, it is frequently inappropriately prescribed, especially as empirical treatment. We evaluated the effect of an antimicrobial stewardship intervention targeting for inappropriate continued empirical vancomycin use. METHODS: This was a quasi-experimental study comparing vancomycin use in a 6-month pre-intervention and 6-month intervention period. If empirical vancomycin was continued for more than

PharmacologyMedicine
11
Article|12 citations·2017
Concordance of results of blood and tissue cultures from patients with pyogenic spondylitis: a retrospective cohort study
Ji Yun Bae, C.-J. Kim, Ui-In Kim, Kyoung‐Ho Song, Sung‐Min Kim, Seung‐Ji Kang, Myoung‐don Oh, Kyoung Un Park, N.J. Kim
SJR Q1Clinical Microbiology and Infection
SurgeryMedicine
12
Article|11 citations·2023
The Impact of the Rapid Blood Culture Identification Panel on Antibiotic Treatment and Clinical Outcomes in Bloodstream Infections, Particularly Those Associated with Multidrug-Resistant Micro-Organisms
Ji Yun Bae, Jiyeon Bae, Min‐Kyung So, Hee Jung Choi, Miae Lee
SJR Q2DiagnosticsOA

We evaluated the impact of the FilmArray blood culture identification (BCID) panel on the time taken to administer effective antibiotics and the clinical outcomes of bloodstream infections. We retrospectively screened patients with bloodstream infections who underwent BCID testing and compared them to a historical control group that received conventional culture testing. A total of 144 and 214 patients who underwent BCID and conventional cultures, respectively, were compared. The 30-day mortalit

Clinical BiochemistryBiochemistry, Genetics and Molecular Biology
13
Article|8 citations·2017
Identification of distinctive clinical significance in hospitalized patients with endoscopic duodenal mucosal lesions
Yeji Han, Hye‐Kyung Jung, Ji Young Chang, Chang Mo Moon, Seong‐Eun Kim, Ki‐Nam Shim, Sung-Ae Jung, Joo‐Young Kim, Ji Yun Bae, Sae-In Kim, Ji-Hyun Lee, Sanghui Park
SJR Q2The Korean Journal of Internal MedicineOA

Background/Aims: Duodenitis is not infrequent finding in patient undergoing endoscopy. However, hospitalized patients have a higher incidence of secondary duodenal mucosal lesions that might be related with inflammatory bowel disease (IBD), cytomegalovirus (CMV) infection, tuberculosis, immunologic disorders, or other rare infections. We aimed to identify clinicopathologic features of duodenal mucosal lesions in hospitalized patients. Methods: All hospitalized patients having duodenal mucosal le

SurgeryMedicine
14
Article|8 citations·2017
Early Therapeutic Drug Monitoring of Posaconazole Oral Suspension in Patients With Hematologic Malignancies
Hyeon Jeong Suh, Inho Kim, Joo‐Youn Cho, Sang‐In Park, Seo Hyun Yoon, Joo‐Hee Hwang, Ji Yun Bae, Jeong‐Ok Lee, Youngil Koh, Kyoung‐Ho Song, Pyoeng Gyun Choe, Kyung‐Sang Yu
SJR Q2Therapeutic Drug Monitoring

BACKGROUND: Therapeutic drug monitoring (TDM) of posaconazole is usually performed 1 week after starting the drug because of its long half-life. However, previous studies showed that measuring the posaconazole plasma concentration (PPC) on day 3 is effective for predicting steady-state levels. The purpose of this study was to evaluate the relevance of early TDM (day 3) of posaconazole for achieving an optimal PPC. METHODS: This prospective study was conducted from September 2014 to August 2016.

Infectious DiseasesMedicine
15
Article|5 citations·2023
Association between Pneumonia Development and Virulence Gene Expression in Carbapenem‐Resistant Acinetobacter baumannii Isolated from Clinical Specimens
Ji Yun Bae, Ina Yun, Kang Il Jun, Chung-Jong Kim, Miae Lee, Hee Jung Choi
SJR Q2Canadian Journal of Infectious Diseases and Medical MicrobiologyOA

We investigated the virulence gene expression of carbapenem‐resistant Acinetobacter baumanii (CRAB) isolated from the respiratory samples of patients with CRAB pneumonia and those with CRAB colonization to identify the virulence genes contributing to CRAB pneumonia’s development and mortality. Patients with CRAB identified from respiratory specimens were screened at a tertiary university hospital between January 2018 and January 2019. Patients were classified into CRAB pneumonia or CRAB coloniza

Molecular MedicineBiochemistry, Genetics and Molecular Biology

Research Areas

Infectious DiseasesSurgeryMolecular MedicineClinical BiochemistryEpidemiologyPharmacology

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