Publications by authors named "Jung H Oh"

is an edible halophyte and an ingredient in traditional Korean medicine. In the present study, isopimpinellin (IPN), a bioactive coumarin, was isolated from the medicinal halophyte , and the effects of IPN against UVA-induced photoaging were investigated in human dermal fibroblasts. Photoaging is a skin disorder that manifests itself as premature skin aging due to chronic exposure to UV radiation.

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  • Recent advancements in sequencing tech have improved how we analyze genomic and proteomic data, but we still lack efficient computational tools for large-scale data analysis.
  • To fill this gap, a new bioinformatics tool called Ollivier-Ricci curvature-omics (ORCO) has been developed, which incorporates gene interactions and omic data into a biological network.
  • ORCO calculates Ollivier-Ricci curvature (ORC) values to assess network robustness and gene signaling changes, and it's an open-source Python package available on GitHub for public use.
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The use of insects as a food source is not a new idea, but it has gained momentum in recent years due to the need for sustainable protein source in livestock feedstuffs and for more environmentally friendly organic waste treatment. In the case of black soldier fly larvae, , research has focused on their ability to convert organic waste into usable nutrients and their potential as a protein source for animal and human consumption. In this study, black soldier fly larvae were reared on raw food waste (FW) mixed with garlic peel waste (G) and hydronic growth media waste (H) and the proximate composition and bioactive potential of black soldier fly larvae extract (SFL) were compared.

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  • * Researchers analyzed the MMRF CoMMpass dataset and found that WEE1 expression levels can effectively distinguish between high-risk and low-risk patients, showing a significant difference in progression-free survival (PFS).
  • * The findings suggest that WEE1 expression is an independent prognostic factor for MM and may lead to new therapeutic strategies by exploring the causes of abnormal WEE1 expression.
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  • Magnetoresistance is a key phenomenon in technology that helps in detecting magnetic states used in data storage and sensors.
  • Recent research has introduced a new form called bilinear magnetoelectric resistance (BMER), which depends on both electric and magnetic fields.
  • The study suggests that BMER is a broad phenomenon linked to the spin Hall effect, particularly in three-dimensional systems without specific spin textures, and could play an important role in advanced magnetic technology.
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  • Mitochondria play a crucial role in producing ATP, and measuring their synthesis rate can reveal insights into cell energy levels, but traditional methods have limitations in assessing real-time changes.
  • The MitoRAISE assay was developed to detect these real-time ATP level changes by analyzing the response of mitochondrial ATP synthesis to different substrates, using various cell conditions to validate its effectiveness.
  • Results indicated that mitochondrial function (ATP levels and responses) was impaired in breast cancer patients compared to healthy individuals, suggesting that MitoRAISE could serve as a valuable tool for monitoring mitochondrial health in various diseases.
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Purpose: We hypothesized that an in-house developed system using megavoltage and kilovoltage image guidance (MKIG) to ensure correct prostate positioning during stereotactic body radiation therapy (SBRT) could potentially avoid unwanted doses to nontarget tissues, leading to reduced toxicities.

Methods And Materials: We built a 3-dimensional MKIG platform that accurately tracks prostate implanted fiducials in real time and clinically translated the system to replace a commercial approach, intrafraction motion review (IMR), which only tracks fiducials in the 2-dimensional kilovoltage views. From 2017 to 2019, 150 patients with prostate cancer were treated with SBRT and monitored using MKIG.

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Breast cancer includes several subtypes with distinct characteristic biological, pathologic, and clinical features. Elucidating subtype-specific genetic etiology could provide insights into the heterogeneity of breast cancer to facilitate the development of improved prevention and treatment approaches. In this study, we conducted pairwise case-case comparisons among five breast cancer subtypes by applying a case-case genome-wide association study (CC-GWAS) approach to summary statistics data of the Breast Cancer Association Consortium.

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Background: Contralateral breast cancer (CBC) is the most common second primary cancer diagnosed in breast cancer survivors, yet the understanding of the genetic susceptibility of CBC, particularly with respect to common variants, remains incomplete. This study aimed to investigate the genetic basis of CBC to better understand this malignancy.

Findings: We performed a genome-wide association analysis in the Women's Environmental Cancer and Radiation Epidemiology (WECARE) Study of women with first breast cancer diagnosed at age < 55 years including 1161 with CBC who served as cases and 1668 with unilateral breast cancer (UBC) who served as controls.

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Obesity and related complications are significant health issues in modern society, largely attributed to a sedentary lifestyle and a carbohydrate-rich diet. Since anti-obesity drugs often come with severe side effects, preventative measures are being sought globally, including dietary changes and functional foods that can counteract weight gain. In this context, plant-based metabolites are extensively studied for their advantageous biological effects against obesity.

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Network properties account for the complex relationship between genes, making it easier to identify complex patterns in their interactions. In this work, we leveraged these network properties for dual purposes. First, we clustered pediatric sarcoma tumors using network information flow as a similarity metric, computed by the Wasserstein distance.

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Lung adenocarcinoma (ADC) is the most common non-small cell lung cancer. Surgical resection is the primary treatment for early-stage lung ADC while lung-sparing surgery is an alternative for non-aggressive cases. Identifying histopathologic subtypes before surgery helps determine the optimal surgical approach.

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  • Multiple myeloma (MM) shows significant variations in genomic traits, treatment responses, and long-term outcomes, prompting researchers to explore global interactions using a large dataset.
  • A novel analysis method, using network robustness metrics, revealed patterns in gene expression that correlate with clinical outcomes and identified high-risk subtypes with poor progression-free survival.
  • This study found 118 aberrantly expressed genes related to immune function and DNA repair, with eight identified as prognostic, highlighting complex immune dysregulation that contributes to shorter survival in MM patients.
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Purpose: Disease progression after definitive stereotactic body radiation therapy (SBRT) for early-stage non-small cell lung cancer (NSCLC) occurs in 20-40% of patients. Here, we explored published and novel pre-treatment CT and PET radiomics features to identify patients at risk of progression.

Materials/methods: Published CT and PET features were identified and explored along with 15 other CT and PET features in 408 consecutively treated early-stage NSCLC patients having CT and PET < 3 months pre-SBRT (training/set-aside validation subsets: n = 286/122).

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Directionally sensitive radiomic features including the histogram of oriented gradient (HOG) have been shown to provide objective and quantitative measures for predicting disease outcomes in multiple cancers. However, radiomic features are sensitive to imaging variabilities including acquisition differences, imaging artifacts and noise, making them impractical for using in the clinic to inform patient care. We treat the problem of extracting robust local directionality features by mapping via optimal transport a given local image patch to an iso-intense patch of its mean.

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Melanogenesis is the process where skin pigment melanin is produced through tyrosinase activity. Overproduction of melanin causes skin disorders such as freckles, spots, and hyperpigmentation. Myricetin 3--galactoside (M3G) is a dietary flavonoid with reported bioactivities.

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Drug-induced liver injury (DILI) is an adverse hepatic drug reaction that can potentially lead to life-threatening liver failure. Previously published work in the scientific literature on DILI has provided valuable insights for the understanding of hepatotoxicity as well as drug development. However, the manual search of scientific literature in PubMed is laborious and time-consuming.

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We fabricated graphene oxide (GO)-incorporated polylactic acid (PLA) (GO-PLA) films by using three-dimensional (3D) printing to explore their potential benefits as barrier membranes for guided bone regeneration (GBR). Our results showed that the 3D printed GO-PLA films provided highly favorable matrices for preosteoblasts and accelerated new bone formation in rat calvarial bone defect models.

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The advance of sequencing technologies has enabled a thorough molecular characterization of the genome in human cancers. To improve patient prognosis predictions and subsequent treatment strategies, it is imperative to develop advanced computational methods to analyze large-scale, high-dimensional genomic data. However, traditional machine learning methods face a challenge in handling the high-dimensional, low-sample size problem that is shown in most genomic data sets.

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Background And Purpose: Late radiation-induced hematuria can develop in prostate cancer patients undergoing radiotherapy and can negatively impact the quality-of-life of survivors. If a genetic component of risk could be modeled, this could potentially be the basis for modifying treatment for high-risk patients. We therefore investigated whether a previously developed machine learning-based modeling method using genome-wide common single nucleotide polymorphisms (SNPs) can stratify patients in terms of the risk of radiation-induced hematuria.

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Quercetin 3--galactoside (Q3G) is a common dietary flavanol that has been shown to possess several bioactivities, including anti-melanogenesis. However, how Q3G exerts its anti-melanogenic effect has not been studied. The current study, therefore aimed to investigate the anti-melanogenesis potential of Q3G and elucidate the underlying action mechanism in α-melanocyte-stimulating hormone (-MSH)-induced hyperpigmentation model of B16F10 murine melanoma cells.

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is a biennial halophyte found in the salt marshes and shores of Korea and widely used in traditional Korean medicine as an ingredient. This study investigated and compared the antimelanogenic effect of solventpartitioned fractions of extract (CJEFs) in a B16F10 mouse melanoma cell model, focusing on tyrosinase activity and production. Melanogenesis is the process in which skin pigment melanin is produced through tyrosinase activity.

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  • - Bone marrow adiposity is common in osteoporotic patients and is caused by an imbalance in bone marrow cell differentiation, leading to fat accumulation instead of bone formation.
  • - The study focused on libanoridin, a coumarin compound, which was found to significantly reduce lipid accumulation in adipocytes derived from human bone marrow cells and suppress key adipogenic markers.
  • - Libanoridin's anti-adipogenic effects appear to operate through the inhibition of specific signaling pathways (MAPK-mediated PPARγ signaling), suggesting its potential use as a nutraceutical to combat osteoporosis-related complications.
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Background: Chronic exposure to ultraviolet (UV) radiation induces photo-oxidation, which in turn causes the overproduction of matrix metalloproteinases (MMPs) and collagen degradation. These symptoms are referred to as photoaging, which is characterized by skin thickness, irregular pigmentation, elastosis and coarse wrinkles. In this study, the protective effects of oleracone C isolated from Portulaca olerace against UVB-induced changes in MMPs and type I procollagen production were investigated in human keratinocytes.

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Background And Objectives: This study introduced and evaluated the efficacy of an ultrasonic bony aspirator (UBA) in revision endoscopic sinus surgery and compared the outcomes to those of the traditional cold instrument approach.

Methods: This retrospective study enrolled 57 patients who underwent revision endoscopic sinus surgery between June 2010 and December 2017, 17 patients with a UBA approach and 40 patients with traditional instruments.

Results: Median Lund-Kennedy scores showed a statistically significant difference between the two groups at 3 months (p=0.

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