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Jun Hyun Yu

Sungkyunkwan University · 医学

研究室紹介

Professor Jun Hyun Yu's research lab focuses on the intersection of metabolic disorders, vascular health, and aging, with a particular emphasis on homocysteine metabolism, cerebral small vessel disease, and the role of gut microbiota in obesity and metabolic syndrome. The lab investigates the pathophysiological mechanisms linking hyperhomocyst(e)inemia, MTHFR gene polymorphisms, and cerebrovascular outcomes, including cerebral infarction and vascular dementia. Additionally, the lab explores novel therapeutic strategies using gut microbiota modulation and nutritional interventions—such as folic acid supplementation—to mitigate neuronal damage and improve outcomes in ischemic brain injury.

homocysteine metabolismcerebral infarctiongut microbiotavascular dementiafolic acid deficiency

Research Overview

Papers
58
Total Citations
659
Papers (5y)
9
Primary Field
医学

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
9total
2021
2022
2023
2024
2025
Citations per year (5y)
32total
20212022202320242025

Selected Papers

15
1
Article|141 citations·1998
Relation of Plasma Homocyst(e)ine to Cerebral Infarction and Cerebral Atherosclerosis
Jun‐Hyun Yoo, Chin‐Sang Chung, Soo‐Sang Kang
SJR Q1Stroke

BACKGROUND AND PURPOSE: A number of investigations support the theory that the elevated plasma homocyst(e)ine is associated with occlusive vascular disease. The aim of this study is to examine whether moderate hyperhomocyst(e)inemia is an independent risk factor for cerebral infarction. In addition, we examined the association between plasma homocyst(e)ine and the severity of cerebral atherosclerosis. METHODS: We conducted a hospital-based case-control study with 140 male controls and 78 male pa

RheumatologyMedicine
2
Article|65 citations·2015
Intestinal removal of free fatty acids from hosts by Lactobacilli for the treatment of obesity
Hea‐Jong Chung, Jae Gak Yu, In‐Ah Lee, Ming‐Jie Liu, Yanfei Shen, Satya Priya Sharma, Mohammad Abu Hena Mostofa Jamal, Jun‐Hyun Yoo, Hyeon‐Jin Kim, Seong‐Tshool Hong
SJR Q2FEBS Open BioOA

Recent findings on the association of gut microbiota with various diseases, including obesity, prompted us to investigate the possibility of using a certain type of gut bacteria as a safe therapeutic for obesity. Lactobacillus mutants with enhanced capacity in absorption of free fatty acids (FFAs) were isolated to show reduced absorption of FFAs by the administered host, attributing to inhibition of body weight gain and body fat accumulation as well as amelioration of blood profiles. Consequentl

PhysiologyMedicine
3
Review|62 citations·2015
End‐of‐life communication in Korean older adults: With focus on advance care planning and advance directives
Dong Wook Shin, Ji Eun Lee, Belong Cho, Sang Ho Yoo, SangYun Kim, Jun‐Hyun Yoo
SJR Q2Geriatrics and gerontology international/Geriatrics & gerontology international

The present article aimed to provide a comprehensive review of current status of end-of-life (EOL) care and sociocultural considerations in Korea, with focus on the EOL communication and use of advance directives (AD) in elderly Koreans. Through literature review, we discuss the current status of EOL care and sociocultural considerations in Korea, and provide a look-ahead. In Korea, patients often receive life-sustaining treatment until the very end of life. Advance care planning is rare, and mo

Public Health, Environmental and Occupational HealthMedicine
4
Article|61 citations·2000
Pathogenicity of Thermolabile Methylenetetrahydrofolate Reductase for Vascular Dementia
Jun‐Hyun Yoo, Gyu-Dong Choi, Soo‐Sang Kang
SJR Q1Arteriosclerosis Thrombosis and Vascular Biology

Although the major biochemical abnormality due to methylenetetrahydrofolate reductase (MTHFR) deficiency is hyperhomocyst(e)inemia, its pathogenicity appears to involve more than homocysteine toxicity. In patients with severe MTHFR deficiency, a metabolite(s) other than hyperhomocyst(e)inemia also appears to be associated with its clinical manifestation in cerebrovascular disease. To elucidate the specific role of the TT genotype of MTHFR in the development of cerebral infarction with and withou

RheumatologyMedicine
5
Article|51 citations·2019
Anemia and Risk of Fractures in Older Korean Adults: A Nationwide Population-Based Study
Eun Ae Lee, Dong Wook Shin, Jun‐Hyun Yoo, Hyeonyoung Ko, Su Min Jeong
SJR Q1Journal of Bone and Mineral ResearchOA

Anemia is a common health problem in older adults and is associated with risk factors for fracture such as low physical function and low bone mass. The aim of this study was to examine the relationship between anemia and fracture risk in older adults. We conducted a retrospective cohort study from 2003 to 2013. The participants were community-dwelling Korean adults aged 65 years and older who participated in the National Health Screening Program (n = 72,131) between 2003 and 2008. Anemia (<12 g/

GeneticsMedicine
6
Article|28 citations·1999
Moderate Hyperhomocyst(e)inemia Is Associated with the Presence of Coronary Artery Disease and the Severity of Coronary Atherosclerosis in Koreans
Jun‐Hyun Yoo, Jung-Euy Park, Kyungpyo Hong, Sanghoon Lee, Duk‐Kyung Kim, W. Robert Lee, Sang-Chul Park
SJR Q2Thrombosis Research
RheumatologyMedicine
7
Article|24 citations·2008
Folic acid deficiency increases delayed neuronal death, DNA damage, platelet endothelial cell adhesion molecule‐1 immunoreactivity, and gliosis in the hippocampus after transient cerebral ischemia
In Koo Hwang, Ki‐Yeon Yoo, Hong‐Won Suh, Young Sup Kim, Dae Young Kwon, Young‐Guen Kwon, Jun‐Hyun Yoo, Moo‐Ho Won
SJR Q2Journal of Neuroscience ResearchOA

Folic acid deficiency increases stroke risk. In the present study, we examined whether folic acid deficiency enhances neuronal damage and gliosis via oxidative stress in the gerbil hippocampus after transient forebrain ischemia. Animals were exposed to a folic acid-deficient diet (FAD) for 3 months and then subjected to occlusion of both common carotid arteries for 5 min. Exposure to an FAD increased plasma homocysteine levels by five- to eightfold compared with those of animals fed with a contr

RheumatologyMedicine
8
Article|21 citations·2013
Occupational Stress and Physical Symptoms among Family Medicine Residents
So-Myung Choi, Yongsoon Park, Jun‐Hyun Yoo, Go-Young Kim
SJR Q2Korean Journal of Family MedicineOA

After the adjustment had been made for potential confounders, the total score of occupational stress and six subscales in family medicine residents showed a significant positive correlation with physical symptom scores.

PharmacologyMedicine
9
Article|16 citations·2021
Effects of menopausal hormone therapy on ambulatory blood pressure and arterial stiffness in postmenopausal Korean women with grade 1 hypertension: a randomized, placebo-controlled trial
Byung-Koo Yoon, Jidong Sung, Yun‐Mi Song, Soo-Min Kim, Kyung-A Son, Jun‐Hyun Yoo, Sung‐Ji Park, Duk‐Kyung Kim
SJR Q1Clinical HypertensionOA

BACKGROUND: Estrogen therapy in early menopausal women decreases the risk of coronary heart disease and parenteral, but not oral, estrogen is reported to reduce blood pressure (BP). Progestogens are typically added to estrogens to prevent unopposed endometrial stimulation. The effects of progestogen on BP have been less well studied to date. This study was conducted to explore the impacts of micronized progesterone (MP4) combined with percutaneous estradiol gel (PEG) on hemodynamics in postmenop

Endocrinology, Diabetes and MetabolismMedicine
10
Article|14 citations·2007
국내 대학생들의 카페인 섭취행태와 카페인의 관련 증상
유준현, 이정권, 이병훈, 박용순, 김준수

연구배경: 카페인은 의학적으로 인체에 상당한 해가 된다는 일치된 견해가 없고 사회적으로 큰 문제를 일으키지 않아 알코올이나 흡연에 비해 잘 다루어지지 않았으나 이는 많은 사람들이 즐겨 섭취하는 물질이고 최근에 국내 커피 섭취량이 증가하고 있으며, 향후 카페인 함유 식품에 고카페인 표시를 추진할 예정이어서 카페인의 섭취행태와 관련 증상의 조사는 중요하다. 방법: 2003년 10월부터 12월까지 국내 대학생들을 대상으로 체계화된 자기기입식 설문을 한 후 연구대상자 810명에서 사회인구학적 변수, 각각의 카페인 섭취원에 따른 하루 카페인 섭취량의 합을 계산하고 DSM-IV의 물질의존과 카페인의 금단에 대한 연구 진단기준, 카페인중독의 정의를 사용하여 카페인 관련 증상을 평가하였다. 결과: 연구대상자 810명(하루 카페인 섭취량의 평균=120.49 mg) 중 DSM-IV의 물질의존 진단기준에 의한 카페인의 의존성향은 내성 61.1%, 금단 46.3%, 의도보다 많은 양을 섭취 46.0%,

12
Article|12 citations·2020
Anemia and the risk of Parkinson’s disease in Korean older adults: A nationwide population-based study
In Young Cho, Dong Wook Shin, Younjin Roh, Wooyoung Jang, Jin Whan Cho, Eun Ae Lee, Hyeonyoung Ko, Kyungdo Han, Jun‐Hyun Yoo
SJR Q1Scientific ReportsOA

Evidence of the association between anemia and risk of PD (Parkinson's disease) have been accumulating. This study aimed to examine the relationship between anemia and risk of PD in Korean older adults. Korean adults aged 50 years or older who participated in the Korean National Screening Program (n = 12,342,278) between 2009 and 2013 were followed until 2015. Cox proportional hazards regression models were used to calculate the hazard ratio (HR) of PD, and participants were followed for a mean

NeurologyMedicine
13
Article|11 citations·2005
Deletion polymorphism in the gene for angiotensin-converting enzyme is associated with essential hypertension in men born during the Pacific War
Jun‐Hyun Yoo
SJR Q1Mechanisms of Ageing and Development
Cardiology and Cardiovascular MedicineMedicine
14
Article|8 citations·2020
Associations between cola consumption and bone mineral density in Korean adolescents and young adults: a cross-sectional study using data from the Korea National Health and Nutrition Examination Survey, 2008–2011
Yun-A Kim, Jun‐Hyun Yoo
SJR Q2Journal of Nutritional ScienceOA

The present study aimed to elucidate the relationship between cola consumption and bone mineral density (BMD) in Korean adolescents and young adults. We used data from the Korea National Health and Nutrition Examination Survey 2008-2011. A total of 2499 adolescents and young adults aged 12-25 years were included. The study participants were classified as cola drinkers and non-cola drinkers according to 24-h dietary recall data. BMD was measured using dual X-ray absorptiometry. In the male popula

Orthopedics and Sports MedicineMedicine
15
Article|2 citations·2006
배우자 학대에 대한 일부 가정의학과 의사의 인식, 태도 및 교육 경험
유준현, 김준수, 김대균, 김순옥, 이정권

연구배경: 일차진료 의사들은 배우자 학대 피해 발생 시 피해 여성들이 처음 혹은 유일하게 접촉하게 되는 만큼 배우자 학대 피해의 선별과 진단, 추적과 예방에 있어 매우 중요한 위치에 있지만 아직까지 국내에서는 의사들의 배우자 학대 문제에 대한 인식, 태도 그리고 교육 경험 등에 대해 알려진 바는 거의 없어 본 연구를 시행하였다. 방법: 2004년 대한가정의학회 춘계 학술대회에 참석한 가정의학과 전문의 중 191명을 임의 추출하여 미리 준비한 설문지를 배포한 후 이 중 성실히 응답한 125명을 대상으로 분석하였다. 설문은 가정의학회 회원 명부에서 임의 추출한 10명의 전문의를 대상으로 전화를 이용한 사전조사를 실시하여 개발하였으며 설문 대상자의 사회인구학적 특성과 함께 배우자 학대에 관한 태도와 인식, 환자 경험, 개입의 빈도 및 내용, 교육 및 수련의 내용 및 수준, 교육에 대한 요구 및 가장 선호하는 교육 방법, 법적 의무에 대한 인지 여부 등을 포함한 총 5 페이지의 자기 기입식

Research Areas

RheumatologyGeneral Health ProfessionsPhysiologyPublic Health, Environmental and Occupational HealthEndocrinology, Diabetes and MetabolismNeurology

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