Publications by authors named "Sohyun Chun"

Article Synopsis
  • Estimating the incidence of End-stage kidney disease (ESKD) in stroke survivors is vital for understanding their clinical outcomes and improving post-stroke quality of life.
  • A nationwide study compared 315,326 stroke patients to 390,781 stroke-free individuals, revealing a much higher incidence of ESKD in stroke patients (1.83 vs. 0.57 per 100,000 person-years).
  • The results indicate that stroke survivors are at a significantly increased risk for developing ESKD, regardless of disability severity, emphasizing the importance of monitoring kidney function in this group.
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Article Synopsis
  • - The study found that patients with Parkinson's disease (PD) have a significantly higher risk of fractures compared to those without PD, with a particularly high risk for hip fractures.
  • - The risk of fractures increased consistently with the severity of the disease, but the duration of PD did not seem to have an impact on fracture risk.
  • - This research emphasizes the importance of considering both the prevalence and severity of PD when assessing fracture risks in clinical settings.
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Importance: Although numerous studies have shown an association between alcohol consumption and cancer, how changes in drinking behavior increase or decrease the incidence of cancer is not well understood.

Objective: To investigate the association between the reduction, cessation, or increase of alcohol consumption and the development of alcohol-related cancers and all cancers.

Design, Setting, And Participants: This population-based cohort study analyzed adult beneficiaries in the Korean National Health Insurance Service.

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Background: The effect of serial change in alcohol consumption on stroke risk has been limitedly evaluated. We investigated the association of change in alcohol consumption with risk of stroke.

Methods: This study is a population-based retrospective cohort study from National Health Insurance Service database of all Koreans.

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The optimal blood pressure (BP) target in older people according to frailty status remains uncertain. This article investigates how frailty affects the association between BP and cardiovascular diseases or mortality, specifically in young-old adults. A retrospective cohort was created for 708,964 older adults with a uniform age of 66 years.

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It is unclear if cigarette smoking and alcohol consumption are associated with thyroid cancer risk. Our aim was to explore for any associations between cigarette smoking and alcohol consumption with thyroid cancer, after adjusting for potential confounders. Using data from the Korean National Health Insurance database, we retrospectively identified individuals aged ≥20 years who participated in the 2009 health screening program and were followed until 2017.

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Purpose: While renal impairment is one of the first clinical manifestations of multiple myeloma (MM), declined renal function may conversely be a risk factor for cancers including MM. In this study, we investigated the relationship between chronic kidney disease and MM at a population level.

Materials And Methods: A total of 9,809,376 adults who participated in a nationwide health screening program and had no MM, cancer or end-stage renal disease at baseline were investigated for incidence of MM.

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We evaluated the association between aspirin, statins, and metformin use and prostate cancer (PC) incidence and mortality using a large population-based dataset. 388,760 men who participated in national health screening program in Korea during 2002-2003 were observed from 2004 to 2013. Hazard ratios of aspirin, statins, and metformin use for PC incidence and PC mortality were calculated with adjustment for simultaneous drug use.

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To elucidate potential causality between smoking and alcohol intake on thyroid cancer incidence, we explored the effect of changes in smoking and alcohol consumption habits. From the Korean National Health Insurance database, we identified 4,430,070 individuals who participated in the national health screening program in 2009 and 2011. The level of smoking and alcohol consumption was measured twice, once in 2009 and again in 2011.

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Chronic kidney disease in its later stages is associated with increased risk of kidney cancer. We investigated whether chronic kidney disease at milder stages is associated with increased kidney cancer risk, using a retrospectively selected cohort of 9,809,317 adults in the Republic of Korea who participated in a nationwide health screening (2009-2016). We examined the impact of estimated glomerular filtration rate (eGFR), dipstick proteinuria, and interactive associations between the 2 factors on the risk of incident kidney cancer.

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Aim: This study aimed to evaluate the relationship between Timed Up and Go test performance and the incidence of older adult heart diseases and mortality.

Methods: This was a retrospective cohort study of 1,084,875 older adults who participated in a national health screening program between 2009-2014 (all aged 66 years old). Participants free of myocardial infarction, congestive heart failure, and atrial fibrillation at baseline were included and were divided into Group 1 (<10 s), Group 2 (10-20 s) and Group 3 (≥20 s) using the Timed Up and Go test scores.

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Objective: To our knowledge, no studies have yet looked at how the risk of developing breast cancer (BC) varies with changes in metabolic syndrome (MetS) status. This study aimed to investigate the association between changes in MetS and subsequent BC occurrence.

Research Design And Methods: We enrolled 930,055 postmenopausal women aged 40-74 years who participated in a biennial National Health Screening Program in 2009-2010 and 2011-2012.

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Background: Physical frailty has previously been associated with adverse clinical outcomes in patients with end-stage renal disease (ESRD). This study aimed to determine whether impaired physical performance at baseline is associated with the incidence of ESRD, using a nationwide database.

Methods: The timed up-and-go (TUG) test was used to assess physical frailty in 1,552,781 66-year-old individuals, using health examination database records from the Korean National Health Insurance Service.

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Background: The association between smoking, alcohol consumption, and thyroid cancer has been evaluated in observational studies, yet the results remain controversial. In the present investigation, we analyzed a longitudinal cohort study with representative data to determine the association between smoking, alcohol consumption, and thyroid cancer risk, allowing for risk modification due to age and sex.

Methods: From the Korean National Health Insurance database, .

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Backgrounds: Triglyceride (TG) is known to be regulated by multiple lifestyle factors rather than genetic factors. This cross-sectional and community-based study (Healthy Twin study in Korea) aimed to estimate the "modifiable TG level" by identifying non-genetic risk factors of TG.

Methods: Participants were recruited between 2006 and 2011 who fulfilled health examinations and detail surveys: 3079 Korean adults including 949 monozygotic twins and 222 dizygotic twins.

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Purpose: The timed up-and-go (TUG) test is a validated screening tool to assess fall risk. This study evaluated the association between the TUG test and future fractures, which are a tangible clinical complication of falling.

Methods: We included 1,070,320 participants who participated in the National Screening Program for Transitional Ages for Koreans aged 66 years old from 2009 to 2014.

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Lung cancer specialists play an important role in designing and implementing lung cancer screening. We aimed to describe their 1) attitudes toward low-dose lung computed tomography (LDCT) screening, 2) current practices and experiences of LDCT screening and 3) attitudes and opinions towards national lung cancer screening program (NLCSP). We conducted a national web-based survey of pulmonologists, thoracic surgeons, medical oncologists, and radiological oncologists who are members of Korean Association for Lung Cancer (N = 183).

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Background And Purpose: Early-onset Alzheimer's disease (EOAD) and late-onset Alzheimer's disease (LOAD) have different clinical and neuroimaging characteristics, but memory decline is usually present in both types. However, there have been few functional studies focused on the hippocampus in Alzheimer's disease. We therefore investigated the functional connectivity between the hippocampus and other brain regions using resting-state fMRI and compared the findings between EOAD and LOAD.

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Exosomes are small membrane vesicles between 30 and 100 nm in diameter secreted by many cell types, and are associated with a wide range of physiological and/or pathological processes. Exosomes containing proteins, lipids, mRNA, and microRNA contribute to cell-to-cell communication and cell-to-environment regulation, however, their biological functions are not yet fully understood. In this report, exosomes in the glioblastoma cell line, U-87MG, were isolated and the proteome was investigated.

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Introduction: In Asian countries, reluctance to seek pharmacological intervention is a major barrier for smoking cessation. Culturally appropriate decision aids are expected to help people in the decision making for the use of smoking cessation medication.

Objective: The aim of this study was to develop a culturally tailored decision aid for smoking cessation and evaluate its effect on the use of smoking cessation medication.

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Background: Sugar-sweetened carbonated beverage consumption has been linked to obesity, metabolic syndrome, type 2 diabetes, and clinically manifest coronary heart disease, but its association with subclinical coronary heart disease remains unclear. We investigated the relationship between sugar-sweetened carbonated beverage consumption and coronary artery calcium (CAC) in a large study of asymptomatic men and women.

Methods: This was a cross-sectional study of 22,210 adult men and women who underwent a comprehensive health screening examination between 2011 and 2013 (median age 40 years).

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Objective: The association of egg consumption with subclinical coronary atherosclerosis remains unknown. Our aim was to examine the association between egg consumption and prevalence of coronary artery calcium (CAC).

Methods: Cross-sectional study of 23,417 asymptomatic adult men and women without a history of cardiovascular disease (CVD) or hypercholesterolemia, who underwent a health screening examination including cardiac computed tomography for CAC scoring and completed a validated food frequency questionnaire at the Kangbuk Samsung Hospital Total Healthcare Centers, South Korea (March 2011-April 2013).

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2-oxogluatrate and Fe(II)-dependent oxygenase domain-containing protein 1 (OGFOD1) was recently revealed to be a proline hydroxylase of RPS23 for translational termination. However, OGFOD1 is nuclear, whereas translational termination occurs in the cytoplasm, raising the possibility of another function of OGFOD1 in the nucleus. In this study, we demonstrate that OGFOD1 is involved in cell cycle regulation.

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