Publications by authors named "Seung M Lee"

Background: Multiple evanescent white dot syndrome is a rare posterior uveitis that presents with transient white dots in the retina, which may not always be visible at the time of diagnosis. The disease can mimic atypical optic neuritis owing to overlapping symptoms such as central visual field defect, relative afferent pupillary defect, and optic disc swelling. Here, we report a case of multiple evanescent white dot syndrome masquerading as atypical optic neuritis in a young female patient.

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Background: Mixed lineage kinase domain-like protein (MLKL) serves as a critical mediator in necroptosis, a form of regulated cell death linked to various liver diseases. This study aims to specifically investigate the role of MLKL's adenosine triphosphate (ATP)-binding pocket in facilitating necroptosis-independent pathways that may contribute to liver disease progression. By focusing on this mechanism, we seek to identify potential therapeutic targets that can modulate MLKL activity, offering new strategies for the prevention and treatment of liver-related pathologies.

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The genetic risk for hypertensive disorders of pregnancy is linked with the development of atherosclerotic cardiovascular disease. However, the effects of lifestyle and metabolic syndrome on atherosclerotic cardiovascular disease have not been evaluated. Here, we assess the long-term association between these factors and atherosclerotic cardiovascular disease in women with genetic risk for hypertensive disorders of pregnancy.

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Purpose: We investigated changes in macular topography and their association with visual acuity and metamorphopsia in the idiopathic epiretinal membrane (iERM).

Methods: Twenty-four eyes that underwent vitrectomy and ERM removal with internal limiting membrane peeling were included in this study. Best-corrected visual acuity (BCVA) and horizontal/vertical metamorphopsia scores (h and vM-scores in the M-chart) were assessed.

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This study compared glycosylated hemoglobin (HbA1c) levels in the first and second trimesters of pregnancy and assessed maternal and neonatal outcomes according to HbA1c variations among women with pregestational diabetes. This retrospective, multicenter Korean study involved mothers with diabetes who had given birth in 17 hospitals. A total of 292 women were divided into three groups based on HbA1c levels during the first and second trimesters: women with HbA1c levels maintained at <6.

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This study aimed to elucidate the clinical characteristics of patients diagnosed with toxoplasmosis in Korea. We collected and analyzed the specific research data of 5,917 patients from the Health Insurance Review and Assessment (HIRA; 2007-2020) and 533 electronic medical records (EMRs; 2003-2021) of Korean patients. The HIRA data showed that toxoplasmosis is an endemic disease that occurs constantly in Korea, with a large proportion of patients complaining of ocular symptoms.

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  • The study investigates how different orthotic devices (postoperative shoes vs. walker boots) affect plantar pressure during toe and heel gait in healthy individuals.
  • The research involved 30 participants, using a pressure measuring system to assess variables such as peak pressure and contact area while wearing each device.
  • Findings indicate that walker boots provide better offloading benefits during both gait types, suggesting that orthopedic physicians can use this information to make informed decisions when prescribing orthoses for foot and ankle recovery.
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  • - The study introduces a highly sensitive gas sensor for detecting nitrogen monoxide (NO) using a hybrid structure made of palladium nanoparticles (Pd NPs) and porous titanium oxide (TiO), achieving excellent performance at room temperature (∼30°C).
  • - The TiO@Pd 50 hybrid shows impressive results, such as a 175.42% response to 100 ppm NO, a low detection limit of ∼82 ppb, and rapid response times (48s/72s) when exposed to UV light, along with reliability under varying temperatures and humidity levels.
  • - This research highlights the effective mechanisms behind the sensor's performance, including improved surface area, charge carrier management, and a Schottky junction
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Purpose: To investigate the factors affecting visual field recovery in patients with pituitary adenoma following surgical removal, both eyes of 35 patients with pituitary adenoma who had been followed up for > six months post-surgery were retrospectively analyzed.

Material And Methods: Pre- and post-operative visual acuity, visual field test, retinal nerve fiber layer (RNFL), and ganglion cell inner plexiform layer (GCIPL) thickness were investigated. The average age of the 35 patients was 58.

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  • Preeclampsia (PE) is a pregnancy-related disorder caused by issues with the placenta, making it challenging for clinicians to accurately diagnose due to a lack of standard diagnostic criteria.
  • This study explored the use of computational pathology to differentiate between PE and normal placentas by analyzing 168 placental images from two hospitals, employing both unsupervised and supervised learning techniques.
  • The resulting prediction model demonstrated good performance, achieving a sensitivity of 77.3% and specificity of 71.1%, indicating its potential effectiveness for identifying PE placentas in clinical settings.
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  • The White Blood Cell (WBC) differential test is a commonly used diagnostic tool that involves expert analysis of blood samples to identify abnormalities.
  • Automated digital microscopy offers a more efficient alternative to manual inspections, though it faces challenges with capturing high-quality images due to the need for multiple focal planes.
  • A new dataset of 25,773 image stacks from 72 patients has been created, featuring 18 cell classes (both normal and abnormal), which has been meticulously labeled by experts to support advanced WBC classification using machine learning techniques.
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  • The study explored how tocolytic agents affect blood glucose levels in mothers and their newborns among women with gestational diabetes mellitus (GDM) admitted for preterm labor in South Korea.
  • It involved 128 women divided into groups based on the tocolytic agent used: atosiban, ritodrine, and nifedipine, examining their maternal and neonatal glucose levels as well as the incidence of hyperglycemia and hypoglycemia.
  • Results indicated that those treated with atosiban and ritodrine had significantly higher maternal glucose levels and an increased risk of neonatal hypoglycemia compared to those treated with nifedipine.
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Background: Posterior chamber intraocular lens (IOL) dislocation is a common complication of cataract surgery. Dislocated IOLs often require surgical intervention due to the potentially severe risks of leaving this condition untreated. If a patient with extremely low corneal endothelial cell density (ECD) presents with IOL dislocation, the surgeon faces a crucial dilemma of choosing the most optimal surgical treatment option.

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  • Perioperative stroke is a serious risk following surgery, usually identified through prediction models that focus mainly on preoperative patient characteristics.
  • This study utilized data from over 15,000 patients to develop a new machine-learning model that includes both preoperative and intraoperative variables for better stroke risk assessment.
  • The integrated model showed significantly better performance in predicting perioperative stroke compared to models relying only on preoperative factors, indicating the importance of real-time intraoperative data.
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  • The study investigates the effects of maternal COVID-19 vaccination and infection on the immune responses of both mothers and their newborns, highlighting a lack of data on neonatal outcomes from pre-pregnancy vaccination.
  • Results show that mothers vaccinated before pregnancy pass on stronger antiviral protection to their infants compared to those who were vaccinated or infected during pregnancy.
  • The findings suggest that pre-pregnancy vaccination contributes significantly to neonatal immunity against SARS-CoV-2 by enhancing the transfer of neutralizing antibodies via the placenta.
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This study investigates the applicability of six transition metal dichalcogenides to efficient therapeutic drug monitoring of ten antiepileptic drugs using laser desorption/ionization-mass spectrometry. We found that molybdenum ditelluride and tungsten ditelluride are suitable for the sensitive quantification of therapeutic drugs. The contribution of tellurium to the enhanced efficiency of laser desorption ionization was validated through theoretical calculations utilizing an integrated model that incorporates transition-metal dichalcogenides and antiepileptic drugs.

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Angiogenesis is mainly regulated by the delivery of VEGF-dependent signaling to cells. However, the angiogenesis mechanism regulated by VEGF-induced miRNA is still not understood. After VEGF treatment in HUVECs, we screened the changed miRNAs through small-RNA sequencing and found VEGF-induced miR-4701-3p.

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In this study, we propose a generative data augmentation technique to overcome the challenges of severely limited data when designing a deep learning-based automated strabismus diagnosis system. We implement a generative model based on the StyleGAN2-ADA model for system design and assess strabismus classification performance using two classifiers. We evaluate the capability of our proposed method against traditional data augmentation techniques and confirm a substantial enhancement in performance.

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  • Intraoperative hypotension can cause complications after surgery, and traditional methods primarily relied on invasive pressure measures, which had limitations in their analysis.
  • This study proposes a new deep-learning approach that integrates frequency-domain information from various biosignals, improving prediction of hypotension compared to time-domain-only models.
  • Results showed that the frequency-domain model significantly outperformed conventional methods, particularly in non-invasive data, suggesting a new way for clinicians to predict hypotension during surgery.
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  • The performance of transition metal dichalcogenides (TMDCs) relies heavily on the dielectric constant of the substrates they are placed on, which limits their use in various applications.
  • A solution was developed using a low surface energy perfluorinated polyether (PFPE) self-assembled monolayer (SAM) to increase the distance between TMDCs and their substrates, reducing interactions.
  • This approach led to improved device characteristics, such as lower subthreshold swing, higher photoluminescence intensity of excitons, and reduced substrate doping effects, thereby enhancing the potential applications of TMDCs.
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  • * An anonymous online survey gathered insights from pregnant/postpartum women, internal medicine physicians, and obstetricians about their knowledge, management practices, and preferences for digital tools.
  • * While all groups recognized the importance of a digital system, pregnant women were more enthusiastic about its integration compared to healthcare professionals, revealing differences in specific feature preferences for managing GDM.
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Cellulose nanocrystals (CNCs) are currently of great interest for many applications, such as energy storage and nanocomposites, because of their natural abundance. A number of carbonization studies have reported abnormal graphitization behavior of CNCs, although cellulose is generally known as a precursor for hard carbon (nongraphitizable carbon). Herein, we report a spray-freeze-drying (SFD) method for CNCs and a subsequent carbonization study to ascertain the difference in the structural development between the amorphous and crystalline phases.

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  • This study explores how the stacking sequence of layered GaPS materials affects their physical properties, particularly focusing on vibrational characteristics and Raman scattering data.
  • The investigation compares two different stacking sequences (AA and AB) through experimental results and theoretical models using density functional theory.
  • Findings indicate that the stacking sequence significantly alters the vibrational configurations and Raman spectra of GaPS, helping to clarify previous ambiguities in experimental data and provide criteria for evaluating stacking sequences.
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The importance of β-glucan from S. cerevisiae in angiogenesis has not been well studied. We investigated whether β-glucan induces angiogenesis through PI3K/Src and ERK1/2 signaling pathway in HUVECs.

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Purpose: To evaluate the efficacy of inverted internal limiting membrane (ILM) flap technique in full-thickness macular holes (MHs) with a size of ≤400 μm compared to the ILM peeling technique.

Methods: Related literatures that compared inverted ILM flap and ILM peeling in MHs ≤ 400 μm were reviewed by searching electronic databases including Pubmed, EMbase, ClinicalTrials.gov, and Cochrane Library up to April 2023.

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