Publications by authors named "Jin W Lee"

All-solid-state batteries (ASSBs) are pursued due to their potential for better safety and high energy density. However, the energy density of the cathode for ASSBs does not seem to be satisfactory due to the low utilization of active materials (AMs) at high loading. With small amount of solid electrolyte (SE) powder in the cathode, poor electrochemical performance is often observed due to contact loss and non-homogeneous distribution of AMs and SEs, leading to high tortuosity and limitation of lithium and electron transport pathways.

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Background: Os subfibulare (OS) is commonly found in patients with chronic lateral ankle instability (CLAI). When performing lateral ligament reconstruction for CLAI, excision of a large OS can cause substantial lateral ligament defects making anatomic repair challenging. This study analyzed clinical and radiologic outcomes among patients who underwent osteosynthesis of the OS for chronic lateral ankle instability and a large OS.

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Purpose: Since 1995, the Korean Gastric Cancer Association (KGCA) has been periodically conducting nationwide surveys on patients with surgically treated gastric cancer. This study details the results of the survey conducted in 2023.

Materials And Methods: The survey was conducted from March to December 2024 using a standardized case report form.

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Article Synopsis
  • The study highlights the importance of crosstalk among lung cell types for proper lung function and illustrates the inadequacies of traditional 2D and 3D lung models in mimicking this complexity.
  • An advanced multicellular 3D lung-on-a-chip system was developed using natural polymers and blood coagulation factors to accurately represent the dynamic microenvironment of lung tissue.
  • This new system allows for quick and sensitive toxicity detection in lung cells, identifying SERPINB2 as a key biomarker for lung toxicity while incorporating a fluorescence-based screening platform for evaluating drug candidates.
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Background: This study aimed to compare the clinical and radiologic outcomes among grades according to the arthroscopic classification of chronic ATFL lesions after arthroscopic lateral ligament repair.

Methods: We retrospectively analyzed 135 patients with chronic lateral ankle instability who underwent arthroscopic lateral ligament repair at 3 institutions between 2018 and 2020. The patients were divided into four groups according to the arthroscopic classification of the ATFL remnants.

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Purpose: To compare the analgesic efficacy, adverse effects, and long-term functional outcomes of perioperative naproxen alone versus naproxen with pregabalin for treating pain in ankle fractures.

Methods: This study included 70 patients who underwent operative fixation of rotatory ankle fractures. Group A received naproxen 500 mg only, and Group B received naproxen 500 mg with pregabalin 75 mg 2-hour before surgery and 12 hourly for 14 days thereafter.

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  • The interactions between different cell types in the oral cavity are vital for oral health, influencing tooth support and defense against pathogens.
  • Conventional 2D and 3D models do not accurately represent the complexity of these interactions, leading to the development of a new 3D oral-on-a-chip system using natural polymers.
  • This system highlights that tonsil-resident stem cells are more vulnerable to toxins and identifies SERPINB2 as a key toxicity biomarker, which has led to the creation of a fluorescence-linked detection system for assessing oral toxicity in drug candidates.
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Conventional cell spheroid production methods are largely manual, leading to variations in size and shape that compromise consistency and reliability for use in cell-based therapeutic applications. To enhance spheroid production, a spherical shell bioprinting system was implemented, enabling the high-throughput generation of uniform cell spheroids with precisely controlled sizes. The system encapsulates cells within thin alginate hydrogel shells formed through bioprinting and ion crosslinking reactions.

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Since the discovery that exosomes can exchange genes, their potential use as tools for tissue regeneration, disease diagnosis, and therapeutic applications has drawn significant attention. Emerging three-dimensional (3D) printing technologies, such as bioprinting, which allows the printing of cells, proteins, DNA, and other biological materials, have demonstrated the potential to create complex body tissues or personalized 3D models. The use of 3D spheroids in bioprinting facilitates volumetric tissue reconstruction and accelerates tissue regeneration via exosome secretion.

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Background: A clear and precise definition of the "intended use" in developing new medical devices can determine the success of entering the healthcare market. For this, practical collaboration between the clinical and engineering experts is necessary, and an appropriate tool is required for effective information collection and decision-making in the process.

Methods: The Korean Academy of Medical Sciences, in cooperation with the Korean Medical Device Development Fund, implemented the Healthcare Experts' Advisory Unit and Support (HAUS) program to match advisory clinical experts in medical device development projects.

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Background: Unplanned reattendances (UR) are an important quality indicator in the emergency department (ED). Understanding the risk factors associated with UR can aid clinicians in optimizing the allocation of time and resources, as well as targeted counselling for this specific group of patients. In this study, we aimed to compare patient characteristics between children who attended a pediatric emergency department (ED) with unplanned reattendances (UR) and those without UR.

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Hepatic dysregulation of lipid metabolism exacerbates inflammation and enhances the progression of metabolic dysfunction-associated steatotic liver disease (MASLD). STAT3 has been linked to lipid metabolism and inflammation. Jolkinolide B (JB), derived from , is known for its pharmacological anti-inflammatory and anti-tumor properties.

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Article Synopsis
  • Syndesmotic impingement syndrome is linked to ongoing lateral or anterolateral ankle pain, commonly occurring after a rotational injury.
  • A study analyzed 107 ankles of patients who underwent surgery for this syndrome, assessing the types of tissue involved and their relationship with cartilage damage.
  • The findings revealed that fibrotic tissue was the most common type of impingement and was significantly associated with cartilage lesions in the lateral talar dome, indicating the need for careful evaluation in patients with prolonged ankle pain.
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Silicon is a promising alternative to graphite anodes for achieving high-energy-density in lithium-ion batteries (LIBs) because of its high theoretical capacity (3579 mAh g). However, silicon anode must be developed to address its disadvantages, such as volume expansion and low electronic conductivity. Therefore, the use of silicon as composed with graphite and carbon anode materials is investigated, which requires properties such as a spherical morphology for high density and encapsulation of silicon particles in the composite.

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Antimicrobial resistance is extremely common in , a frequent cause of urethritis in men and cervicitis, vaginitis, and pelvic inflammatory disease in women. Treatment of infections is difficult due to intrinsic and acquired resistance to many antibiotic classes. We undertook a program to identify novel antimicrobials with activity against from fungal natural products.

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Unlabelled: This study investigated levels of eight polycyclic aromatic hydrocarbons (PAH8) compounds in both raw and processed marine products in South Korea. Katsuobushi exhibited the highest concentration of benzo[a]pyrene, at 14.22 µg/kg, exceeding the European Commission's regulation level of 5.

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Although metal-organic thin films are required for many biorelated applications, traditional deposition methods have proven challenging in preparing these composite materials. Here, a Co-organic composite thin film was prepared by plasma-enhanced atomic layer deposition (PEALD) with cobaltocene (Co(Cp)) on polydimethylsiloxane (PDMS), using two very high frequency (VHF) NH plasmas (60 and 100 MHz), for use as a tissue culture scaffold. VHF PEALD was employed to reduce the temperature and control the thickness and composition.

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Soil sustains human life by nourishing crops, storing food sources, and housing microbes, which may affect the nutrition and biosynthesis of secondary metabolites, some of which are used as drugs. To identify lead compounds for a new class of drugs, we collected soil-derived fungal strains from various environments, including urban areas. As various human pathogens are assumed to influence the biosynthetic pathways of metabolites in soil fungi, leading to the production of novel scaffolds, we focused our work on densely populated urban areas and tourist attractions.

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Severe bone defects pose a clinical challenge in total ankle arthroplasty (TAA) and are frequently considered contraindicated. We introduce an innovative approach that utilizes a structural tibial cut autograft to address anterior distal tibia bone defects during TAA. This technique is a viable alternative to employing revision TAA systems or resorting to excessively high tibial cuts.

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Five new lipopeptaibols (-) and eight new 19-residue peptaibols (-) along with two known lipopeptaibols, lipovelutibols C () and D () were isolated from . The planar structures of the newly discovered peptaibols (-, -) were elucidated using 1D and 2D NMR, and UPLC-MS/MS data. The absolute configurations for new peptaibols (-, -) were elucidated using the advanced Marfey's method and GITC (2,3,4,6-tetra--acetyl-β-d-glucopyranosyl isothiocyanate) derivatization.

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Hydroxyapatite (HA) exhibits outstanding biocompatibility, bioactivity, osteoconductivity, and natural anti-inflammatory properties. Pure HA, ion-doped HA, and HA-polymer composites are investigated, but critical limitations such as brittleness remain; numerous efforts are being made to address them. Herein, the novel self-crystallization of a polymeric single-stranded deoxyribonucleic acid (ssDNA) without additional phosphate ions for synthesizing deoxyribonucleic apatite (DNApatite) is presented.

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Correction for 'Biosynthesis, biological activities, and structure-activity relationships of decalin-containing tetramic acid derivatives isolated from fungi' by Hyun Woo Kim , , 2024, https://doi.org/10.1039/d4np00013g.

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The reciprocal crosstalk between testicular Sertoli and Leydig cells plays a vital role in supporting germ cell development and maintaining testicular characteristics and spermatogenesis. Conventional 2D and the recent 3D assay systems fail to accurately replicate the dynamic interactions between these essential endocrine cells. Furthermore, most in vitro testicular tissue models lack the ability to capture the complex multicellular nature of the testis.

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The topology of the basement membrane (BM) affects cell physiology and pathology, and BM thickening is associated with various chronic lung diseases. In addition, the topology of commercially available poly (ethylene terephthalate) (PET) membranes, which are used in preclinical in vitro models, differs from that of the human BM, which has a fibrous and elastic structure. In this study, we verified the effect of BM thickness on the differentiation of normal human bronchial epithelial (NHBE) cells.

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Covering: up to December 2023Decalin-containing tetramic acid derivatives, especially 3-decalinoyltetramic acids (3-DTAs), are commonly found as fungal secondary metabolites. Numerous biological activities of this class of compounds, such as antibiotic, antiviral, antifungal, antiplasmodial, and antiprotozoal properties, have been the subject of ongoing research. For this reason, these molecules have attracted a lot of interest from the scientific community and various efforts including semi-synthesis, co-culturing with bacteria and biosynthetic gene sequencing have been made to obtain more derivatives.

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