Publications by authors named "Hyun-A Lee"

Purpose: Ventilator-associated events (VAEs), developed by the US Centers for Disease Control and Prevention (CDC), are considered a new medical quality indicator associated with poor outcomes. However, previous studies failed to adjust for changes in patient severity, leaving open the possibility that VAEs are just a surrogate for severity. This study aimed to reevaluate the association between VAEs and mortality, adjusting for changes in severity over time.

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: Despite its high prevalence, studies on glucocorticoid-induced hyperglycemia are lacking. We examined the glucose profiles of patients with type 2 diabetes undergoing dexamethasone-containing chemotherapy using continuous glucose monitoring (CGM). We also investigated the effects of gliclazide on the management of hyperglycemia in these patients.

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Salmonella is a rare causative pathogen of osteomyelitis and is commonly detected in patients with sickle cell disease. We described 2 consecutive cases of nontyphoidal Salmonella osteomyelitis identified in immunocompetent children. It is evident that even children without apparent risk factors for immune dysfunctions can be affected, so maintaining clinical suspicion is crucial for early diagnosis and prompt treatment.

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Malignant melanoma represents a form of skin cancer characterized by a bleak prognosis and heightened resistance to traditional therapies. Quercetin has demonstrated notable anti-carcinogenic, anti-inflammatory, anti-oxidant, and pharmacological effects across various cancer types. However, the intricate relationship between quercetin's anti-cancer properties and ganglioside expression in melanoma remains incompletely understood.

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A cardiopulmonary exercise test (CPET) is essential for lung resection. However, performing a CPET can be challenging. This study aimed to develop a machine learning model to estimate maximal oxygen consumption (VO) using data collected through a patch-type single-lead electrocardiogram (ECG) monitoring device in candidates for lung resection.

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Background: SB16 is a biosimilar to reference denosumab (DEN). This study assessed pharmacokinetic (PK) equivalence and evaluated pharmacodynamic (PD), safety, tolerability, and immunogenicity between SB16, European Union-sourced DEN (EU-DEN), and United States-sourced DEN (US-DEN).

Research Design And Methods: In this double-blind, parallel group, and single-dose study, healthy male subjects were randomized 1:1:1 to receive a single 60 mg dose of either SB16, EU-DEN, or US-DEN subcutaneously.

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Background/aims: Acute upper gastrointestinal (UGI) bleeding is a significant emergency situation with a mortality rate of 2% to 10%. Therefore, initial risk stratification is important for proper management. We aimed to evaluate the role of contrast-enhanced multidetector computed tomography (MDCT) for risk stratification in patients with acute UGI bleeding in the emergency room (ER).

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Background: Periodontitis is initiated or accelerated by dysbiosis of oral microorganisms. When hypertension is accompanied in periodontitis patients, changes of oral microbiota occur. Since there are no reports on antihypertensives, we assessed their effect on the oral microbial profiles of patients with periodontitis.

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As the most toxic dioxin, 2,3,7,8-tetrachlorodibenzo-p-dioxin is classified as a group 1 human carcinogen. We investigated the long-term effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin exposure on the progression of brain atrophy in humans. We retrospectively selected 546 patients exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (exposed group) and 1353 patients not exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (control group).

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YH4808 is a novel potassium-competitive acid blocker that is under clinical development to treat patients with gastroesophageal reflux disease and peptic ulcer diseases. In this study, the pharmacokinetic (PK) and pharmacodynamic (PD) profiles of YH4808 were modeled in healthy male volunteers who received a single oral dose of YH4808 at 30, 50, 100, 200, 400, 600, and 800 mg or matching placebo and multiple once-daily oral doses of YH4808 at 100, 200, and 400 mg or matching placebo for 7 days. A population PK-PD model adequately described the time-concentration-effect profiles of YH4808.

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Objectives: To compare the pharmacokinetics (PK), pharmacodynamics (PD), safety, and immunogenicity between SB12 (a proposed eculizumab biosimilar) and the reference product (RP) eculizumab (i.e., European Union (EU)-sourced Soliris and United States (US)-sourced Soliris).

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Purpose: Patients undergo dilatation and evacuation for abortion or miscarriage. However, bleeding is sometimes problematic. Despite reports on the association between volatile anesthetics and increased bleeding during the procedure, firm evidence is lacking.

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Background: Power wheelchair joysticks are often available as standardized ready-made products for patients with severe hand dysfunction. However, standardized joysticks have limitations in accommodating the individualized features of hand dysfunctions. Three-dimensional (3D) printing technology has facilitated active research on the development of joysticks that can overcome such limitations.

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Aim: The aim of this study was to propose biomarker candidates for periodontitis via untargeted metabolomics analysis.

Materials And Methods: Metabolic profiling was performed using saliva samples from 92 healthy controls (H) and 129 periodontitis patients (P) in the discovery cohort using proton nuclear magnetic resonance spectroscopy. Random forest was applied to identify metabolites that significantly differentiated the control group from the periodontitis group.

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Catastrophic antiphospholipid syndrome is a highly fatal condition characterized by widespread thromboembolism subsequent to a triggering factor (e.g., infection, trauma, and neoplasia) in antiphospholipid antibody-positive patients.

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YH12852, a novel, highly selective 5-hydroxytryptamine 4 (5-HT ) receptor agonist, is currently under development to treat patients with functional constipation. In this study, we aimed to develop a pharmacokinetic (PK)-pharmacodynamic (PD) model that adequately described the time courses of the plasma concentrations of YH12852 and its prokinetic effect as assessed by the Gastric Emptying Breath Test (GEBT) and to predict the prokinetic effect of YH12852 at higher doses through PD simulation. We used the plasma concentrations of YH12852 from patients with functional constipation and healthy subjects and the GEBT results from healthy subjects obtained from a phase I/IIa trial.

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GC1118 is a monoclonal antibody for epidermal growth factor receptor (EGFR) that is currently under clinical development to treat patients with solid tumors. In this study, the pharmacokinetics (PKs) of GC1118 were modeled in solid tumor patients who received a 2-h intravenous infusion of GC1118 at 0.3, 1, 3, 5, or 4 mg/kg once-weekly (Q1W) on days 1, 8, 15, and 22 or 8 mg/kg every other week on days 1 and 15.

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Hypothesis: Here, FePd magnetic nanoparticles (MNPs) are developed as artificial enzymes with high biocompatibility and reusability.

Experiment: The nanoparticles (NPs) are synthesized in an aqueous solvent by one-pot synthesis utilizing glutathione (GSH) and cysteine (Cys) as surfactants.

Findings: The prepared hydrophilic FePd NPs are redispersible in water.

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Gastrointestinal (GI) motility disorders are common, decreases quality of life, and imposes a substantial economic burden. YH12852 is a novel agonist of 5-hydroxytryptamine for the treatment of GI motility disorders. This phase I/IIa study assessed the tolerability, pharmacodynamic (PD) and pharmacokinetic (PK) profiles of YH12852.

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Objective: Gout is reportedly associated with a higher incidence of cancer. However, patients with gout tend to have several cancer-related factors including obesity, smoking, and alcohol consumption; thus, the precise association between gout and cancer risk remains unclear. We aimed to investigate the risk of cancer in Korean patients with gout.

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The effect of standard therapeutic strategies on infection is diminished over time owing to the emergence of drug resistant strains. In this study, we would like to confirm the enhanced effect of HP7, which has been reported to exert antibacterial and gastric mucosal protective effects, in combination with var. acuta ()and () extracts.

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Tacrolimus is an immunosuppressive drug with a narrow therapeutic index and larger interindividual variability. We identified genetic variants to predict tacrolimus exposure in healthy Korean males using machine learning algorithms such as decision tree, random forest, and least absolute shrinkage and selection operator (LASSO) regression. (CYP3A5) and (CYP2A6) are single nucleotide polymorphisms (SNPs) that can affect exposure to tacrolimus.

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Background: Aggressive periodontitis is characterized by the early-onset and rapid progression of periodontal destruction and is closely associated with Aggregatibacter actinomycetemcomitans. Autophagy is a conserved process that is critical for removing damaged proteins, organelles, and even intracellular pathogens. Therefore, this study examined whether A.

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Article Synopsis
  • The study developed a PBPK model to analyze how cyclosporine A (CsA) is processed in Asian children with renal impairment (RI), using the Simcyp Simulator for improved accuracy.
  • By adjusting physiological parameters based on differences between healthy and RI populations, researchers verified the model using data from Korean children with kidney disease who received multiple doses of CsA.
  • The results indicated that the impact of renal impairment on drug pharmacokinetics is more significant in children compared to adults, allowing for a better understanding of how ethnicity, age, and renal function influence drug processing in specific populations.
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Background: Porphyromonas gingivalis is a major periodontopathogen found in patients with chronic periodontitis that can lead to alveolar bone or tooth loss. Interleukin-1β (IL-1β), a proinflammatory cytokine, is most relevant to the pathogenesis of periodontitis. Catechin is one of the main polyphenol compounds found in green tea and possesses a range of health benefits.

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