Publications by authors named "Seong Ah Kim"

This study investigates vessel density (VD) changes in the lamina cribrosa (LC) and peripapillary sclera (PPS) after glaucoma surgery and their association with visual field (VF) progression. Primary open-angle glaucoma patients undergoing surgery for uncontrolled intraocular pressure (IOP) at Seoul St. Mary's Hospital were included.

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The aim of this study was to identify the most reliable ocular exam and establish a threshold for deciding whether to perform neuroimaging in order to screen for diverse diseases other than normal-tension glaucoma (NTG). A retrospective, observational, comparative study was used. In total, 106 individuals with atypical features of NTG who underwent glaucoma assessments and contrast-enhanced MRI of the brain or orbit were included.

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Article Synopsis
  • * The researchers analyzed 196 eyes of glaucoma patients with myopia over a minimum of four years, discovering that eyes with DH in the PPA or temporal region showcased longer γ-zone PPA and larger angles of scleral bending compared to typical DH cases.
  • * Findings suggest that while the presence of DH doesn’t directly correlate with visual field progression, the degree of scleral deformation is a significant factor associated with the progression of glaucoma in patients with myopia.
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Dietary biomarkers in urine remain elusive when evaluating diet-induced oxidative stress and inflammation. In our previous study, we conducted a randomized controlled crossover trial to compare the short-term (4-weeks) effects of the balanced Korean diet (BKD) with Western diets, including the 2010 dietary guidelines for Americans (2010 DGA) and typical American diet (TAD), on various metabolic indices in obese Korean adults. Building on this work, the current research focuses on the impact of these dietary interventions on oxidative stress (d-ROMs and BAP) and inflammation (CRP, TNF-α, IL-6, IL-1β, MCP-1) biomarkers in serum, and the concurrent urine metabolomes.

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We aimed to characterize and compare the occurrence of peripapillary microvasculature dropout (MvD) between glaucoma suspects and patients with glaucoma. In addition, the factors related to the development of parapapillary MvD in glaucoma suspects and patients with glaucoma were investigated. Of a total 150 eyes, 68 eyes of glaucoma suspects and 82 eyes of glaucoma patients were analyzed in this study.

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Purpose: To observe the development of glaucoma in myopic eyes with and without myopic optic neuropathy (MON) and analyze associated factors to the development of typical glaucomatous damage.

Design: A prospective, observational, cohort study.

Methods: A total of 233 myopic eyes with no definite evidence of glaucomatous damage were included.

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Background: Single-person households constitute over 40% of all households in the Republic of Korea and are more vulnerable to food insecurity and depression than multi-person households. There is a lack of research on examining whether regional characteristics are associated with the degree of food insecurity and depression among single-person households. This study aimed to examine the regional disparities in food security and depression among single-person households in the Republic of Korea.

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The surface area of encapsulation around the Ahmed glaucoma valve (AGV) endplate is a critical factor in the surgical outcome as it is associated with the degree of IOP reduction. We investigated the surgical outcome of AGV implantation with an additional pericardium graft inserted adjacent to the endplate, with the intent of expanding the surface area of encapsulation. We enrolled 92 patients (92 eyes) who underwent AGV implantation.

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Purpose: To identify factors associated with the development of epiretinal membranes (ERM) in glaucoma patients.

Design: Multicenter, propensity-score matched, case-control study.

Methods: One hundred ninety-two eyes of 192 patients with glaucoma from the Catholic Medical Center Glaucoma Suspect Cohort Study were analyzed.

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Purpose: To investigate associated factors including structural parameters of myopia and vessel density (VD) using optical coherence tomography angiography (OCT-A) to visual acuity (VA) and central visual function in glaucoma patients with myopia.

Design: Retrospective cross-sectional study.

Methods: Sixty-five eyes of 60 glaucoma patients with myopia and without media opacity and retinal lesions were included.

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We identify the angiotensin II (AngII)-associated changes in the extracellular matrix (ECM) and the biomechanical properties of the sclera after systemic hypotension. Systemic hypotension was induced by administering oral hydrochlorothiazide. AngII receptor levels and ECM components in the sclera and biomechanical properties were evaluated based on the stress-strain relationship after systemic hypotension.

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Hypertriglyceridemia is a well-known risk factor of various chronic diseases including diabetes mellitus, metabolic syndrome, obesity, and cardiovascular diseases. This study aimed to determine dietary patterns and explore the relationship between dietary patterns and hypertriglyceridemia in the Korean adult population. We utilized a cross-sectional and nationally representative survey, the Korea National Health and Nutrition Examination Survey 2013-2018 database.

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We evaluated the intereye structure-function relationship in glaucoma patients using photopic negative response in electroretinogram analysis. Patients with confirmed glaucoma (36 eyes, 36 patients) or suspected glaucoma (19 eyes, 19 patients) were included in this study. Electroretinogram (RETI-scan) was performed with red stimulus on blue background.

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Article Synopsis
  • - The study aimed to explore how vessel parameters can help identify individuals at risk of developing normal tension glaucoma (NTG) among suspects who have normal intraocular pressure but suspicious optic disc characteristics.
  • - Researchers monitored 307 NTG suspects over approximately five years, finding that 73 (23.8%) progressed to NTG, with those who converted showing significantly lower measures of microvasculature dropout and laminar vessel density.
  • - The findings indicate that baseline microvasculature dropout and lower laminar deep vessel density are strong predictors of conversion to NTG, suggesting that these vessel parameters are important in assessing risk for this condition.
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Prcis: Reduced P50-N95 amplitude on pattern electroretinography (PERG) and the presence of microvasculature dropout (MvD) on optical coherence tomography angiography (OCT-A) at baseline were significant factors associated with visual field (VF) progression in predominantly normal tension glaucoma (NTG) patients.

Objective: We investigated the baseline demographics and ocular characteristics that predict future progression in glaucoma patients, including PERG and OCT-A parameters.

Methods: One Hundred forty eyes with open angle glaucoma that were prospectively enrolled and followed up for at least 3 years, and underwent at least 5 serial VF tests were included.

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This study aimed to find out the significance of the difference between frequency-doubling technology perimetry (FDT) and standard automated perimetry (SAP) in terms of the detected visual field (VF) damage, and evaluate associated factors to SAP-FDT difference in early glaucoma. Glaucoma patients in early stage (MD better than - 6.0 decibel, 96 eyes) were included in this cross-sectional study.

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Purpose: The purpose of this study was to investigate the ocular and hemodynamic factors contributing to the central visual function in glaucoma patients with myopia.

Methods: This study was a prospective observational study, which included 236 eyes of 140 patients with normal-tension glaucoma (NTG), which includes 114 eyes with mild myopia (axial length ≥24 and <26 mm) and 122 eyes with moderate-to-severe myopia (axial length ≥26 mm). Ocular characteristics were axial length and posterior pole profiles, including peripapillary atrophy (PPA) to disc area ratio, disc tilt ratio, disc torsion, and disc-foveal angle.

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Purpose: To investigate parapapillary choroidal microvasculature dropout (MvD) in branch retinal vein occlusion (BRVO) patients and compare them with open-angle glaucoma (OAG) patients using optical coherence tomography angiography (OCT-A).

Methods: In total, 85 eyes of BRVO patients and 85 eyes of OAG patients, matched by age, spherical equivalent, and baseline mean deviation (MD) of the visual field (VF), were assessed. MvD was defined as complete loss of microvasculature within the choroidal layer on OCT-A.

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Mitochondrial reactive oxygen species (mROS) that are overproduced by mitochondrial dysfunction are linked to pathological conditions including sensory abnormalities. Here, we explored whether mROS overproduction induces itch through transient receptor potential canonical 3 (TRPC3), which is sensitive to ROS. Intradermal injection of antimycin A (AA), a selective inhibitor of mitochondrial electron transport chain complex III for mROS overproduction, produced robust scratching behavior in naïve mice, which was suppressed by MitoTEMPO, a mitochondria-selective ROS scavenger, and Pyr10, a TRPC3-specific blocker, but not by blockers of TRPA1 or TRPV1.

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Objectives: This study aimed to examine the association between metabolically healthy obesity and all-cause and cardiovascular disease (CVD) mortality in a Korean population.

Design: A prospective study.

Setting: This study used data from the Korean Genome and Epidemiology Study.

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Scope: To identify the cross-sectional and prospective association between coffee consumption and nonalcoholic fatty liver disease (NAFLD) among South Korean adults.

Methods And Results: Participants are selected from the Health Examinees study. NAFLD is defined using three non-invasive indexes: fatty liver index (FLI), hepatic steatosis index, and fibrosis-4 calculator (FIB-4).

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Background And Aims: There has been conflicting results on the effect of red meat and processed meat intake on the dyslipidemia risk. Moreover, studies in Asian population with lower meat intake than the Western population are lacking. In this study, we aimed to investigate the association between red and processed meat consumption and the dyslipidemia risk by sex among Koreans.

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Background: There is a dearth of information regarding the association between coffee consumption and its health effects with respect to mortality among Korean people.

Objective: The aim of this study was to examine the association between coffee consumption and all-cause mortality and cause-specific mortality risks in the Korean population.

Design: This prospective cohort study had a median follow-up period of 9.

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Coffee is widely consumed worldwide, and numerous studies indicate that coffee consumption may potentially affect the development of chronic diseases. Metabolic syndrome (MetS) may constitute a risk factor for chronic diseases. We aimed to prospectively evaluate the association between coffee consumption and MetS incidence.

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Article Synopsis
  • - Undergraduate students at UCLA conducted research using RNA interference (RNAi) and fluorescent proteins to pinpoint genes crucial for blood cell development in fruit flies, screening around 3,500 genes and finding 137 that affected hematopoiesis.
  • - By targeting RNAi to different cell types involved in blood cell maturation, the researchers identified specific gene subsets that either facilitate or inhibit this process, revealing new insights into gene functions related to RNA processing and vesicular trafficking.
  • - The CURE (Course-Based Undergraduate Research Experience) model not only enhanced students' understanding and skills in science but also improved retention rates in STEM fields, demonstrating the value of hands-on research in education.
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