정한영 교수
Han Yeong Jeong
서울대학교 · 의학
연구실 소개
정한영 교수의 연구실은 뇌졸중의 조기 진료 및 예후 개선을 위한 전임기 지연 요인 분석과 함께, 특히 V. vulnificus 및 V. parahaemolyticus와 같은 유해성 해양균의 병원성 기전을 유전체 기반으로 규명하고 있습니다. 주요 연구 방향은 뇌졸중 환자의 조기 병원도착 유도 전략 개발과 병행해, 병원성 세균의 독소 유전자, 철 흡수 관련 유전자, 분비 시스템 등을 포함한 병원성 인자에 대한 전장 게놈 분석입니다. 특히, 세균에 의한 적혈구의 응고 활성화 메커니즘과 그 유전자 발현 조절을 규명하는 데 초점을 맞추고 있습니다.
연구 현황
연구 성과 추이
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
주요 논문
15Thus, the onset-to-door time of≤4.5 h is crucial for better clinical outcome, and lower NIHSS score, greater pre-stroke mRS score, female sex, unclear onset times, and ≤6 years of schooling were independent predictors of late arrival. Therefore, educating about the importance of early hospital arrival after acute ischemic stroke should be emphasized. More strategic efforts are needed to reduce the prehospital delay by understanding the predictors of late arrival.
This study provided analysis of nationwide, hospital-based, quality-controlled data from the Korean Stroke Registry database regarding changes in the characteristics, risk factors, and treatments of strokes in Korea.
Pathogenesis-associated genes including vvhA, rtx gene cluster, and various hemolysin genes were present in FORC_017. In addition, three complete secretion systems (Type I, II and VI) as well as iron uptake-related genes for virulence of the FORC_017 were detected, suggesting that this strain is pathogenic. Further comparative genome analysis revealed that FORC_017 and CMCP6 share major toxin genes including vvhA and rtx for pathogenesis activities. The genome information of the FORC_017 provide
V. vulnificus-infected patients suffer from hemolytic anemia and circulatory lesions, often accompanied by venous thrombosis. However, the pathophysiological mechanism of venous thrombosis associated with V. vulnificus infection remains largely unknown. Herein, V. vulnificus infection at the sub-hemolytic level induced shape change of human red blood cells (RBCs) accompanied by phosphatidylserine exposure, and microvesicle generation, leading to the procoagulant activation of RBCs and ultimately
Korean stroke patients in a CO-VID-19 epidemic region exhibited distinct changes in health-seeking behaviors. Appropriate triage system and public education regarding the importance of early treatment are needed during the COVID-19 pandemic.
Vibrio parahaemolyticus is a Gram-negative, motile, nonspore-forming pathogen that causes foodborne illness associated with the consumption of contaminated seafoods. Although many cases of foodborne outbreaks caused by V. parahaemolyticus have been reported, the genomes of only five strains have been completely sequenced and analyzed using bioinformatics. In order to characterize overall virulence factors and pathogenesis of V. parahaemolyticus associated with foodborne outbreak in South Korea,
Ambient air pollution is one of the most important global health issues. Although several studies have been reported the associations between air pollution and brain function or structure, impact of the air pollution on cerebral small vessel disease (cSVD) have rarely been explored in Asian adult population. We evaluated the association between exposure to air pollutants and cSVD in Korean asymptomatic adults. This cross-sectional study included 3257 participants of a health screening program fr
Our results suggest that extended use of hypothermia is safe and feasible for elderly patients with large hemispheric infarctions. Hypothermia may be considered as a therapeutic alternative to DHC in elderly individuals. Further studies are required to validate our findings.
<i>Vibrio parahaemolyticus</i> can cause gastrointestinal illness through consumption of seafood. Despite frequent food-borne outbreaks of <i>V. parahaemolyticus</i>, only 19 strains have subjected to complete whole-genome analysis. In this study, a novel strain of <i>V. parahaemolyticus</i>, designated FORC_022 (Food-borne pathogen Omics Research Center_022), was isolated from soy sauce marinated crabs, and its genome and transcriptome were analyzed to elucidate the pathogenic mechanisms. FORC_
Vibrio parahaemolyticusis a Gram-negative halophilic bacterium that causes food-borne gastroenteritis in humans who consumeV. parahaemolyticus-contaminated seafood.The FORC_023 strain was isolated from raw fish storage water, containing live fish at a sashimi restaurant. Here, we aimed to sequence and characterize the genome of the FORC_023 strain. The genome of the FORC_023 strain showed two circular chromosomes, which contained 4227 open reading frames (ORFs), 131 tRNA genes and 37 rRNA genes.
<i>Bacillus cereus</i> causes food-borne illness through contaminated foods; therefore, its pathogenicity and genome sequences have been analyzed in several studies. We sequenced and analyzed <i>B. cereus</i> strain FORC_021 isolated from a sashimi restaurant. The genome sequence consists of 5,373,294 bp with 35.36% GC contents, 5,350 predicted CDSs, 42 rRNA genes, and 107 tRNA genes. Based on in silico DNA-DNA hybridization values, <i>B. cereus</i> ATCC 14579<sup>T</sup> was closest to FORC_021
This study highlights the status of low-volume hospitals in providing stroke care in areas with limited access to larger medical facilities. It suggests that enhancing acute stroke care performance, particularly through human resource investments, can significantly improve quality and patient outcomes at these hospitals.
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