Publications by authors named "Jeong Gy Lee"

Isoflavone-enriched soybean leaves (IESLs) were processed for drying, steaming, and fermentation, and bioactive compounds and biological activities were analyzed. During food processing, the content of fatty acids, water-soluble vitamins, total phenolics, total flavonoids, and isoflavone-aglycones increased from dried IESLs (DrIESLs) to fermented IESLs (FeIESLs). Especially, oleic acid (53.

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The aim of the study is to formulate an injectable nanocrystalline suspension (NS) of dutasteride (DTS), a hydrophobic 5α-reductase inhibitor used to treat benign prostatic hyperplasia and scalp hair loss, for parenteral long-acting delivery. A DTS-loaded NS (DTS-NS, 40 mg/mL DTS) was prepared using a lab-scale bead-milling technique. The optimized DTS-NS prepared using Tween 80 (0.

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Article Synopsis
  • Slim cameras are crucial for modern devices like smartphones and AR/VR systems, but thinning them down is difficult due to bulky lens systems with empty spaces.
  • Researchers have developed an ultra-slim lens system utilizing metasurface folded optics, achieving a thickness of just 0.7 millimeters—two times thinner than standard designs.
  • This innovative lens technology offers high-quality imaging with a 10° field of view, paving the way for more compact camera solutions in consumer electronics.
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Background And Purpose: To train and validate a deep learning (DL)-based segmentation model for cerebral microbleeds (CMB) on susceptibility-weighted MRI; and to find associations between CMB, cognitive impairment, and vascular risk factors.

Materials And Methods: Participants in this single-institution retrospective study underwent brain MRI to evaluate cognitive impairment between January-September 2023. For training the DL model, the nnU-Net framework was used without modifications.

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  • This study analyzed the nutrients and antioxidant activities of different ratios (0%, 2.5%, 5%, and 10%) of mountain-cultivated ginseng (MCG) fermented with specific microorganisms.
  • It found that fermentation altered the content of isoflavones and ginsenosides, generally decreasing certain types while increasing others, particularly beneficial compounds like ginsenoside Rg3 and compound K.
  • The results suggest that higher ratios of MCG enhance the overall quality, antioxidant properties, and potential health benefits, making it valuable for food and pharmaceutical uses.
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  • - This study examined how solid-state fermentation with various fungi affects the nutritional components, isoflavones, and antioxidant activities of Apios americana Medikus (AAM), highlighting significant increases in fatty acid and amino acid content post-fermentation.
  • - The fermentation process, particularly with the fungus Monascus purpureus, resulted in a remarkable increase in total fatty acids (up to 26.3 times) and improved mineral contents, demonstrating notable nutritional enhancement.
  • - Isoflavone glycosides in unfermented AAM were converted to more beneficial aglycone forms during fermentation, leading to higher total phenolic and flavonoid contents, which suggests that fermented AAM could be a valuable ingredient for food and medicinal
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In this study, we prepared fermented products of isoflavone-enriched soybean leaves (IESLs) and analyzed their nutrients, isoflavones, anti-obesity efficacy, and effects on gut microbiota. Fermented IESLs (FIESLs) were found to be rich in nutrients, especially lauric acid, oleic acid, and linoleic acid. In addition, the concentrations of most essential free amino acids were increased compared to those of IESLs.

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Advances in imaging technologies have led to a high demand for ultracompact, high-resolution image sensors. However, color filter-based image sensors, now miniaturized to deep submicron pixel sizes, face challenges such as low signal-to-noise ratio due to fewer photons per pixel and inherent efficiency limitations from color filter arrays. Here, we demonstrate a freeform metasurface color router that achieves ultracompact pixel sizes while overcoming the efficiency limitations of conventional architectures by splitting and focusing visible light instead of filtering.

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Ischemic stroke segmentation at an acute stage is vital in assessing the severity of patients' impairment and guiding therapeutic decision-making for reperfusion. Although many deep learning studies have shown attractive performance in medical segmentation, it is difficult to use these models trained on public data with private hospitals' datasets. Here, we demonstrate an ensemble model that employs two different multimodal approaches for generalization, a more effective way to perform on external datasets.

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  • * During 2017-2018, a study found a 12.4% serological prevalence of Hantaan orthohantavirus (HTNV) in small mammals, alongside the development of a rapid diagnostic method using a nanopore-based Flongle chip that can detect HTNV in rodent samples within 3 hours.
  • * The study also achieved high-resolution sequencing of HTNV genomes from rodents, revealing insights into the virus's evolutionary dynamics and supporting better surveillance and potential prevention strategies in
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  • Researchers developed high isoflavone-enriched soy leaves (IESLs) using the chemical inducer ethephon at varying concentrations (0, 150, and 300 μg/mL) to enhance the nutritional properties of underutilized soy leaves.
  • The study found that, while proximate composition and fatty acids showed minimal differences, free amino acids and water-soluble vitamins increased significantly with higher ethephon concentrations, with isoflavone levels rising dramatically.
  • The findings suggest that soy leaves treated with ethephon could serve as valuable ingredients for functional foods, cosmetics, and natural medicinal products due to their increased nutritional components.
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We analyzed the virulence traits and azole resistance mechanisms of 104 isolates collected from 13 Korean hospitals from 1996 to 2022. Of these 104 isolates, 96 (5 blood and 91 ear isolates) belonged to clade II, and 8 (6 blood and 2 other isolates) belonged to clade I. Fluconazole resistance (minimum inhibitory concentration ≥32 mg/L) was observed in 68.

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Artificial intelligence (AI) in radiology is a rapidly developing field with several prospective clinical studies demonstrating its benefits in clinical practice. In 2022, the Korean Society of Radiology held a forum to discuss the challenges and drawbacks in AI development and implementation. Various barriers hinder the successful application and widespread adoption of AI in radiology, such as limited annotated data, data privacy and security, data heterogeneity, imbalanced data, model interpretability, overfitting, and integration with clinical workflows.

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In this study, the physicochemical properties (pH, acidity, salinity, and soluble protein), bacterial diversities, isoflavone contents, and antioxidant activities of (fermented soy paste), household (HDJ), and commercial (CDJ), were assessed and compared. The values of pH 5.14-5.

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Metalenses are attractive alternatives to conventional bulky refractive lenses owing to their superior light-modulating performance and sub-micrometre-scale thicknesses; however, limitations in existing fabrication techniques, including high cost, low throughput and small patterning area, have hindered their mass production. Here we demonstrate low-cost and high-throughput mass production of large-aperture visible metalenses using deep-ultraviolet argon fluoride immersion lithography and wafer-scale nanoimprint lithography. Once a 12″ master stamp is imprinted, hundreds of centimetre-scale metalenses can be fabricated using a thinly coated high-index film to enhance light confinement, resulting in a substantial increase in conversion efficiency.

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Toll-like Receptor 3 (TLR3) initiates a potent anti-viral immune response by binding to double-stranded RNA ligands. Previous crystallographic studies showed that TLR3 forms a homodimer when bound to a 46-base pair RNA ligand. However, this short RNA fails to initiate a robust immune response.

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We incorporated nationwide Candida antifungal surveillance into the Korea Global Antimicrobial Resistance Surveillance System (Kor-GLASS) for bacterial pathogens. We prospectively collected and analyzed complete non-duplicate blood isolates and information from nine sentinel hospitals during 2020−2021, based on GLASS early implementation protocol for the inclusion of Candida species. Candida species ranked fourth among 10,758 target blood pathogens and second among 4050 hospital-origin blood pathogens.

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Article Synopsis
  • Whole-genome sequencing is vital for tracking the spread of emerging viruses like Dabie bandavirus (SFTSV), which poses health risks and is spread by ticks.
  • Researchers collected over 6,500 ticks in South Korea and used advanced nanopore sequencing to identify the presence and genetic variations of SFTSV, isolating two strains from specific ticks.
  • The study demonstrated that nanopore sequencing is an effective method for quickly obtaining comprehensive genomic data, which is essential for understanding the virus's evolution and improving public health responses in affected regions.
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The blood-epididymis barrier (BEB) forms a unique microenvironment that is crucial for the maturation, protection, transport, and storage of spermatozoa in the epididymis. To characterize the function of tight junctions (TJs), which are constitutive components of the BEB, we determined the expression and localization of TJ proteins such as zonula occludens (ZO)-1, 2, and 3, occludin, and claudin3 (Cldn3) during postnatal development in the goat epididymis. To assess the expression patterns of TJ proteins in immature (3 months of age) and mature (14 months of age) goat epididymides, two different experimental methods were used including immunofluorescence labeling and western blotting.

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Background: Hantavirus infection occurs through the inhalation of aerosolized excreta, including urine, feces, and saliva of infected rodents. The presence of Hantaan virus (HTNV) RNA or infectious particles in urine specimens of patient with hemorrhagic fever with renal syndrome (HFRS) remains to be investigated.

Methodology/principal Findings: We collected four urine and serum specimens of Republic of Korea Army (ROKA) patients with HFRS.

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Gumiganghwal-tang is a traditional herbal medicine widely used for its anti-inflammatory, analgesic, and antipyretic effects. However, the safety and efficacy of its active ingredients based on an in vivo pharmacokinetic (PK) study have yet been investigated. We have established a sensitive and accurate UPLC-ESI-MS/MS method and conducted a PK study on 14 constituents of Gumiganghwal-tang through human plasma analysis.

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We investigated the effect of bovine lactoferricin (Lfcin-B), a peptide derived from bovine lactoferrin, on activation of intestinal epithelial cells in IEC-6 intestinal cell, and protection against in vivo rotavirus (RV) infection. Treatment with Lfcin-B significantly enhanced the growth of IEC-6 cells and increased their capacity for attachment and spreading in culture plates. Also, Lfcin-B synergistically augmented the binding of IEC-6 cells to laminin, a component of the extracellular matrix (ECM).

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The purpose of this study was to investigate the pharmacokinetic properties of ephedrine, paeoniflorin, and cinnamic acid after single or multiple doses of Socheongryong-tang (SCRT) were administered to rats, and to present an example of the pharmacokinetic changes following multiple doses of an herbal medicine. SCRT is a traditional herbal medicine that has been used clinically for a long time, and its main ingredients include ephedrine, paeoniflorin, and cinnamic acid. However, studies on the pharmacokinetic properties of SCRT are insufficient, and particularly, no pharmacokinetic information has been reported for multiple doses.

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Banhahoobak-tang is the most prescribed herbal drug in East Asia when individuals experience sudden symptoms such as sore throat or neurological symptoms. The low toxicity and high in-vivo safety of this herbal medicine has made it more attractive to patients, and it has recently been formulated as tablets. In addition, Banhahoobak-tang tablets are registered as health insurance drugs in South Korea, and clinical prescriptions and demand are increasing.

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Emerging and re-emerging RNA viruses pose significant public health, economic, and societal burdens. Hantaviruses (genus , family , order ) are enveloped, negative-sense, single-stranded, tripartite RNA viruses that are emerging zoonotic pathogens harbored by small mammals such as rodents, bats, moles, and shrews. Orthohantavirus infections cause hemorrhagic fever with renal syndrome (HFRS) and hantavirus cardiopulmonary syndrome in humans (HCPS).

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