Publications by authors named "Jang C"

Cancer remains a significant medical challenge, necessitating the discovery of novel therapeutic agents. Ribosomally synthesized and post-translationally modified peptides (RiPPs) from plants have emerged as a promising source of anticancer compounds, offering unique structural diversity and potent biological activity. This review identifies and discusses cytotoxic RiPPs across various plant families, focusing on their absolute chemical structures and reported cytotoxic activities against cancer cell lines.

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This study aimed to evaluate the presentation suitability and readability of ChatGPT's responses to common patient questions, as well as its potential to enhance readability. We initially analyzed 30 ChatGPT responses related to knee osteoarthritis (OA) on March 20, 2023, using readability and presentation suitability metrics. Subsequently, we assessed the impact of detailed and simplified instructions provided to ChatGPT for same responses, focusing on readability improvement.

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One-dimensional (1D) vertical nitrides are highly attractive for light-emitting diode (LED) applications because they are useful for overcoming the drawbacks of conventional GaN planar structures. However, the internal quantum efficiency (IQE) of GaN multi-quantum-well (MQW) nanowire (NW) LEDs, typical 1D GaN structures, is still too low to replace standard planar LEDs. Here, we report a phenomenon of light amplification from core-shell InGaN/GaN NW LEDs by incorporating graphene quantum dots (GQDs).

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Huntington's disease (HD) is caused by a CAG repeat expansion in the HTT gene, leading to altered gene expression. However, the mechanisms leading to disrupted RNA processing in HD remain unclear. Here we identify TDP-43 and the N6-methyladenosine (m6A) writer protein METTL3 to be upstream regulators of exon skipping in multiple HD systems.

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Article Synopsis
  • Gliclazide is a medication for type 2 diabetes, primarily metabolized by genetic variations in the CYP2C9 and CYP2C19 enzymes.
  • A physiologically based pharmacokinetic (PBPK) model was developed to analyze how these genetic differences affect gliclazide's effects in patients.
  • The model accurately predicted drug concentration levels in the bloodstream, meeting standard evaluation criteria and potentially paving the way for personalized treatment plans based on genetic profiles.
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Unlabelled: (Arabica) and (Robusta) are valuable agricultural products traded worldwide. In this study, we designed specific primer pairs for Arabica and Robusta using chloroplast genes to distinguish and quantify the two types of coffee beans. We assessed the specificity, sensitivity, and applicability of the qRT-PCR assay using all the primer pairs.

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The placenta is a temporary organ that forms during pregnancy and is essential for fetal development and maternal health. As an endocrine organ, proper placental function requires continual production, folding, and transport of proteins and lipids. Central to these processes is the endoplasmic reticulum (ER), a dynamic organelle responsible for maintaining cellular protein and lipid synthesis and processing.

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Background: Although recommended isolation periods for Coronavirus disease 2019 (COVID-19) have been shortened as the pandemic has subsided, prolonged Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) shedding remains common in immunocompromised patients. This study estimated the probability of viral clearance in these patients based on elapsed days and specific risk factors.

Methods: We prospectively enrolled immunocompromised patients with a confirmed COVID-19 diagnosis from January 2022 to May 2023 during the Omicron variant era.

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Purpose: This study aims to evaluate a new method for the five times sit to stand test (FTSST), crucial for addressing frailty in an aging population. It utilizes a smart insole for plantar pressure analysis and a marker-less motion capture device for head height analysis.

Materials And Methods: Thirty-five participants aged 50 years or older underwent FTSST assessment using three methods: manual measurement with a stopwatch (FTSST-M), plantar pressure analysis with smart insoles (FTSST-P), and head height analysis with a marker-less motion capture device (FTSST-H).

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This study aimed to investigate the effects of fluconazole, a moderate inhibitor of CYP2C9 and CYP3A4, on the pharmacokinetics of celecoxib and its carboxylic acid metabolite in different CYP2C9 genotypes. A total of thirty-nine healthy Korean male volunteers were divided into three different CYP2C9 genotype groups (CYP2C9*1/*1, *1/*3 and *3/*3 genotypes) and were enrolled in the celecoxib alone trial, celecoxib with fluconazole trial, or both. In the celecoxib alone trial, participants received a single oral dose of 200 mg celecoxib.

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Background: No clear agreement exists on the degree of bone formation required to remove a metal plate without correction loss after medial opening-wedge high tibial osteotomy (MOWHTO). We aimed to investigate the mechanical stability of the proximal tibia with different bone formations after plate removal in MOWHTO using finite element models and determine the extent of bone formation when the plate can be removed without correction loss.

Methods: The MOWHTO models with 5, 10, and 15 mm opening gaps were generated.

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  • L. (PAL), or knotgrass, has been traditionally used in various cultures to treat inflammatory conditions like arthritis and airway inflammation, but its molecular mechanisms are not fully understood.
  • The study explores the role of the antioxidant enzyme heme oxygenase-1 (HO-1) in mediating the anti-inflammatory and antioxidative effects of PAL, specifically through its interactions with nuclear factor kappa B (NF-κB) and nuclear factor-erythroid 2-related factor 2 (Nrf2).
  • Results indicate that PAL enhances HO-1 levels and reduces inflammatory markers in macrophages, but inhibiting HO-1 results in increased iNOS expression and nitric oxide production, highlighting the complex relationship between antioxidant and anti
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Exhausted T cells (TEX) in cancer and chronic viral infections undergo metabolic and epigenetic remodeling, impairing their protective capabilities. However, the impact of nutrient metabolism on epigenetic modifications that control TEX differentiation remains unclear. We showed that TEX cells shifted from acetate to citrate metabolism by downregulating acetyl-CoA synthetase 2 (ACSS2) while maintaining ATP-citrate lyase (ACLY) activity.

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Room-temperature magnetism and its stability upon miniaturization are essential characteristics required for materials for spintronic devices and information storage. Among various candidates, FeGaTe stands out due to its high Curie temperature and strong perpendicular magnetic anisotropy (PMA), recently gaining large attention as one of the promising candidate materials for spintronics applications. In this study, we measured the thickness-dependent ferromagnetic properties of FeGaTe and (FeNi)GaTe (with x = 0.

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Importance: African Americans have a higher prevalence of Type 2 Diabetes (T2D) compared to White groups. T2D is a health disparity clinically characterized by dysregulation of lipids and chronic inflammation. However, how the relationships among biological and sociological predictors of T2D drive this disparity remains to be addressed.

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  • Brown adipose tissue (BAT) prefers fatty acids (FA) over glucose for heat production during cold stress, and the mechanism behind this preference is not fully understood.
  • Research shows that cold activates the malate-aspartate shuttle (MAS) in BAT, enhancing FA use by promoting the enzyme glutamic-oxaloacetic transaminase (GOT1) through a specific signaling pathway involving β-adrenergic receptors and PKA.
  • When MAS is active, it facilitates fatty acid oxidation and limits glucose oxidation; conversely, a deficiency in GOT1 decreases FA use and increases glucose oxidation, revealing a critical role for MAS in regulating energy source selection in BAT.
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Tamoxifen is the most prescribed drug used to prevent breast cancer recurrence, but patients show variable responses to tamoxifen. Such differential inter-individual response has a significant socioeconomic impact as one in eight women will develop breast cancer and nearly half a million people in the United States are treated with tamoxifen annually. Tamoxifen is orally delivered and must be activated by metabolizing enzymes in the liver; however, clinical studies show that neither genotype nor hepatic metabolic enzymes are sufficient to predict why some patients have sub-therapeutic levels of the drug.

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Objectives: Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most common pediatric liver disease and can progress to liver fibrosis. Latino adolescents have increased MASLD and fibrosis risk. While fibrosis is diagnosed by biopsy or imaging, more accessible, noninvasive, and economical screening methods are needed.

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Background And Purpose: Rescue stent (RS) is an accepted rescue option after failed mechanical thrombectomy (MT) for acute ischemic stroke due to intracranial atherosclerotic stenosis (ICAS)-related large vessel occlusion (LVO). However, the long-term outcomes (≥ 12 months) of RS have not yet been elucidated.

Materials And Methods: We retrospectively analyzed the data of 154 patients with RS for ICAS-related LVO, which were identified from prospectively maintained multicenter database of RS after MT failure, to assess good outcome (mRS 0-2), mortality, stroke recurrence, symptomatic intracranial hemorrhage (SICH) and stent patency.

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Light field (LF) displays can offer a quasi-natural three-dimensional (3D) viewing experience by tailoring the four-dimensional light information. However, the primary drawback of conventional LF displays is their limited image quality due to restricted information. To address this limitation, time-multiplexing techniques are employed, but the resulting system configurations are often impractical for achieving compact systems.

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Article Synopsis
  • - Early rehabilitation after spinal surgery is crucial for recovery, and a newly developed robot-assisted gait training (RAGT) protocol was tested for its effects on patient outcomes and therapist experiences, demonstrating promising improvements in functional ambulation and patient satisfaction.
  • - The study involved collaboration with experienced physiatrists and physical therapists to create and refine the RAGT protocol, followed by a cross-sectional study with 32 patients and 5 therapists, which included five RAGT sessions.
  • - Results showed significant improvements in ambulation scores post-treatment and general satisfaction among both patients (for fear of falling) and physical therapists, with therapists noting varying levels of satisfaction regarding the treatment's impact on their work environment.
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Patients who receive solid organ transplants often require lifelong immunosuppression, which increases their risk for hematologic disorders. Allogeneic hematopoietic stem cell transplantation (HSCT) offers a potential curative treatment option for these patients. However, there is still a lack of understanding and guidance on graft-vs-host disease (GVHD) immunosuppression regimens, potential complications, and outcomes in patients with solid organ transplants who undergo HSCT.

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Powerline noise is a severe interference source in urban or mine transient electromagnetic (TEM) surveys. TEM systems generally adopt the synchronous detection scheme to suppress the powerline noise. However, when the powerline frequency fluctuates differing from its nominal value (50/60 Hz), the considerable powerline noise residue still remains even after synchronous detection.

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Excessive fructose intake is a risk factor for the development of obesity and its complications. Targeting ketohexokinase (KHK), the first enzyme of fructose metabolism, has been investigated for the management of metabolic dysfunction-associated steatotic liver disease (MASLD). We compared the effects of systemic, small molecule inhibitor of KHK enzymatic activity with hepatocyte-specific, N-acetylgalactosamine siRNA-mediated knockdown of KHK in mice on an HFD.

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