Publications by authors named "Lee Kyung"

Objective: The leptomeningeal ivy sign is a distinctive finding of moyamoya disease (MMD), characterized by a linear high signal intensity along the cortical sulci on contrast-enhanced T1 magnetic resonance imaging (MRI) and fluid-attenuated inversion-recovery MRI. We recently identified a similar linear enhancement along the cortical sulci using gadolinium-enhanced vessel wall MRI (VWMR) in patients with MMD. The aim of this study was to introduce the concept of the "VWMR ivy sign (VIS)".

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Objective: To prospectively evaluate the effect of accelerated deep learning-based reconstruction (Accel-DL) on improving brain magnetic resonance imaging (MRI) quality and reducing scan time compared to that in conventional MRI.

Materials And Methods: This study included 150 participants (51 male; mean age 57.3 ± 16.

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Activatable multifunctional nanoparticles present considerable advantages in cancer treatment by integrating both diagnostic and therapeutic functionalities into a single platform. These nanoparticles can be precisely engineered to selectively target cancer cells, thereby reducing the risk of damage to healthy tissues. Once localized at the target site, they can be activated by external stimuli such as light, pH changes, or specific enzymes, enabling precise control over the release of therapeutic agents or the initiation of therapeutic effects.

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The WHO has classified Helicobacter pylori as a group 1 carcinogen for stomach cancer since early 1994. However, despite the high prevalence of Helicobacter pylori infection, only about 3% of infected people eventually develop gastric cancer.Biomolecular detections of Helicobacter pylori(HP) were compared using specially modified sensors and fluorine immobilized on a carbon nanotube (HFCNT) electrode, which yielded sensitive results.

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Background: Although frailty assessment is crucial for understanding critically ill patients' prognosis, traditional frailty measures require substantial efforts and time from health care professionals. To address this limitation, the laboratory frailty index (FI-LAB) based on laboratory clinical data was developed. However, knowledge regarding its correlation with health outcomes among critically ill older patients is limited.

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Background And Objectives: Obstructive sleep apnea (OSA) is a prevalent sleep disorder characterized by recurrent upper airway obstruction, leading to disrupted sleep and various health complications. Positional OSA (POSA) refers to patients whose OSA severity is significantly influenced by body position, especially when lying supine. This study aimed to evaluate the polysomnographic characteristics of POSA and non-positional OSA (non-POSA) and to assess their clinical implications.

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Introduction: Shift work disrupts circadian rhythms, causing sleep and mood problems. Sleep reactivity-the sensitivity of sleep to stress-may affect how shift workers cope with these disruptions. This study investigated the relationship between sleep reactivity and shift work, exploring associations between sleep reactivity and sleep disturbance, mood symptoms, and quality of life in shift workers.

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Diabetic patients have increased susceptibility to acute kidney injury (AKI), and AKI could progress to chronic tubulointerstitial injury and fibrosis, referred to as AKI-to-chronic kidney disease (AKI-to-CKD) transition. However, whether diabetes directly promotes AKI-to-CKD transition is not known. We previously showed that reticulon-1A (RTN1A), a gene highly upregulated in injured renal tubular epithelial cells (RTECs), promotes AKI-to-CKD transition in nondiabetic settings.

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A diarylethene-based zwitterionic molecule (DZM) is newly synthesized for the development of smart films exhibiting reversible color change and switchable ionic conductivity in response to external light stimuli. This dual molecular building block is constructed through zwitterionic interlocking and strong phase separation between the dendron-shaped aliphatic tails and the diarylethene head. Uniaxial shear coating and molecular self-assembly result in anisotropically oriented nanostructures, which are further solidified through photopolymerization.

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Background: Oxaliplatin is a commonly used platinum-based chemotherapy drug for patients with pancreatic cancer (PC). Drug resistance is a major challenge in PC treatment, underscoring the urgent need for new approaches. Targeting DNA damage repair, one of the factors responsible for platinum resistance, is an attractive strategy to overcome drug resistance.

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Pulmonary tumoral thrombotic microangiopathy (PTTM) is a rare but fatal complication in patients with cancer that causes death due to sudden respiratory distress, pulmonary hypertension, and right ventricular dysfunction. Early diagnosis and intensive treatment are important for improving patient prognosis. Herein, we describe the clinical and CT findings of 10 patients who were clinically diagnosed with PTTM at our hospital over the past 18 years.

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Hepatocellular carcinoma (HCC) comprises the majority of primary liver cancers and possesses a low 5-year survival rate when in the advanced stages. Anillin (ANLN), a key player in cell growth and cytokinesis, is implicated in HCC development. Currently, no treatment agents are known to suppress ANLN.

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The array of complex and evolving patient data has limited clinical decision making in the emergency department (ED). This study introduces an advanced deep learning algorithm designed to enhance real-time prediction accuracy for integration into a novel Clinical Decision Support System (CDSS). A retrospective study was conducted using data from a level 1 tertiary hospital.

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Article Synopsis
  • - The study addresses the limitations of using undefined basement membrane extracts like Matrigel for cultivating intestinal stem cells (ISCs) by introducing a new xenogeneic-free culture dish called XF-DISC.
  • - XF-DISC significantly increases the growth and maintenance of ISCs, achieving a 24-fold cell number increase within 30 days and sustaining viability over 210 days (30 passages).
  • - This method allows for successful transplantation of cultured human ISCs into mouse models with intestinal injuries, fostering tissue regeneration, making it a promising approach for effective ISC therapy in human intestinal diseases.
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  • The study investigates the effects of the COVID-19 pandemic on maternal, fetal, and infant mortality rates in South Korea using national statistics from 2012 to 2022.
  • It finds that while maternal deaths decreased overall, the maternal mortality rate fluctuated over the years, with an increase in 2020.
  • Despite a decline in the number of births and a reduction in maternal and infant deaths, mortality rates remained stable during the pandemic.
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Natural caffeine is found in many plants, including coffee beans, cacao beans, and tea leaves. Around the world, many beverages, including coffee, tea, energy drinks, and some soft drinks, have this natural caffeine compound. This paper reviewed the results of meta-studies on caffeine's effects on chronic diseases.

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Neurodegenerative diseases (NDDs) present significant challenges due to limited treatment options, ethical concerns surrounding traditional animal models, and the time-consuming and costly process of using human-induced pluripotent stem cells (iPSCs). We addressed these issues by developing a 3D culture protocol for differentiating SH-SY5Y cells into glutamatergic neurons, enhancing physiological relevance with a 3D microarray culture plate. Our protocol optimized serum concentration and incorporated retinoic acid (RA) to improve differentiation.

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Black rice bran, a waste product from the commercial milling of black rice that removes the bran and germ leaving the starchy endosperm, contains bioactive anthocyanin, phenolic, and phytosteroid compounds that may have health benefits. This study determined the effect of a polysaccharide-rich bioprocessed (fermented) black rice bran and a green tea extract individually and in combination on weight loss in orally fed mice on a high-fat diet and on concurrent changes in blood glucose and insulin as well as in cholesterol, triglyceride, and high-density and low-density lipoproteins (HDL and LDL). At the end of the eight-week feeding study, the combination diet resulted in a 67% lower weight gain than mice on a high-fat diet alone, a greater effect than that of bioprocessed black rice bran or green tea extract individually.

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Purpose: To evaluate inflammatory markers to identify patients at risk of enhanced recovery after surgery (ERAS) failure following laparoscopic colectomy.

Methods: We included patients who underwent laparoscopic colectomy between September 2020 and February 2023. ERAS failure was defined as intolerance of a soft diet on postoperative day (POD) 2, postoperative stay > 7 days, or readmission within 30 days postoperatively.

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Oxidative stress imposes a substantial cellular burden on the brain and contributes to diverse neurodegenerative diseases. Various antioxidant signaling pathways have been implicated in oxidative stress and have a protective effect on brain cells by increasing the release of numerous enzymes and through anti-inflammatory responses to oxidative damage caused by abnormal levels of reactive oxygen species (ROS). Although many molecules evaluated as antioxidants have shown therapeutic potentials in preclinical studies, the results of clinical trials have been less than satisfactory.

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Article Synopsis
  • - Volkmann's ischemic contracture involves permanent muscle and nerve damage from insufficient blood flow, leading to flexion contractures, whereas pseudo-Volkmann's contracture shares similar symptoms but can fully recover without ischemic damage.
  • - A case study describes a 39-year-old man who experienced finger extension failure after blunt forearm trauma, showing progressive symptoms over two months despite no broken skin or bones.
  • - Surgical intervention after two years revealed severe muscle adhesions due to the trauma, and immediate recovery was achieved after the adhesions were released, suggesting a diagnosis of pseudo-Volkmann's contracture.
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Background: One of the most promising approaches for early and more precise disease prediction and diagnosis is through the inclusion of proteomics data augmented with clinical data. Clinical proteomics data is often characterized by its high dimensionality and extremely limited sample size, posing a significant challenge when employing machine learning techniques for extracting only the most relevant information. Although there is a wide array of statistical techniques and numerous analysis pipelines employed in proteomics data analysis, it is unclear which of these methods produce the most efficient, reproducible, and clinically meaningful results.

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  • Pregnant women are frequently exposed to endocrine disrupting chemicals (EDCs) through personal care products and food packaging, making it crucial to understand how their lifestyle choices affect these exposures.
  • A study in South Korea aimed to analyze various lifestyle factors, such as personal care product usage and eating habits, to determine their impact on prenatal concentrations of EDCs like bisphenol A (BPA) and parabens.
  • Results indicated that lifestyle choices, like using makeup more than six times a week and consuming certain foods, significantly influenced EDC levels during pregnancy, emphasizing the need for awareness of such exposure risks.
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Article Synopsis
  • The article in question has been corrected to address errors found in the original publication.
  • The DOI for the corrected article is 10.1371/journal.pone.0303758, which is a unique identifier for academic papers.
  • It emphasizes the importance of maintaining the integrity and accuracy of published research by ensuring corrections are made when necessary.
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Article Synopsis
  • Fourier ptychography (FP) is a computational imaging technique that enhances image resolution and obtains phase information by using varied angles of light, but reconstructing images can be challenging, especially with noisy or incomplete data.
  • To address these challenges, a new algorithm combining anisotropic total variation and Tikhonov regularizations is proposed, improving image reconstruction quality in high-throughput scenarios.
  • The method, which utilizes the alternating direction method of multipliers, has been tested against other FP algorithms and shows promising results in noise reduction and preserving key details in images collected from biological specimens, even with sparse data.
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