Publications by authors named "Kang Juhee"

Introduction: Despite evidence suggesting that metabolic intermediates like β-HB influence white adipose tissue (WAT) metabolism, the precise molecular mechanisms remain unclear. The aim of this study was to investigate the impact of beta-hydroxybutyrate (β-HB) on the fat browning program and to explore the underlying molecular mechanisms using both and models. We assessed the effects of β-HB on fat browning in adipocytes using 3T3-L1 cells and rat models.

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  • Sarcopenia is the age-related loss of muscle mass and function, significantly impacting health as the population ages.
  • Mitochondrial dysfunction, particularly through mitochondrial reactive oxygen species (mtROS), plays a critical role in sarcopenia, and resistance exercise training (RET) may be beneficial despite traditional views favoring aerobic exercise for improving mitochondria.
  • This review explores how RET can positively influence mtROS, enhance mitochondrial biogenesis, improve mitochondrial dynamics, and promote mitophagy in aging muscles, offering strategies to combat sarcopenia and maintain muscle health.
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Objective: To compare and analyze professional (P chart) and simple (S chart) clinical image evaluation charts for evaluating panoramic radiograph image quality.

Methods: Ten evaluators assessed 285 clinical panoramic radiograph images. The evaluators were divided into oral and maxillofacial radiologists (OMFR, n = 5) and general dentist (dentists not specializing in oral and maxillofacial radiology, G, n = 5) groups.

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Acetaminophen (APAP), a widely used pain and fever reliever, is a major contributor to drug-induced liver injury, as its toxic metabolites such as NAPQI induce oxidative stress and hepatic necrosis. While N-acetylcysteine serves as the primary treatment for APAP-induced liver injury (AILI), its efficacy is confined to a narrow window of 8-24 h post-APAP overdose. Beyond this window, liver transplantation emerges as the final recourse, prompting ongoing research to pinpoint novel therapeutic targets aimed at enhancing AILI treatment outcomes.

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The extensor carpi radialis brevis (ECRB) is well known to be implicated in lateral epicondylitis as a result of inflammation and degeneration. However, tears of the ECRB should be considered a separate pathology and are poorly reported in the literature. Surgical techniques for this pathology also have been poorly described.

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  • - The study aimed to develop a deep-learning model for accurately identifying the mandibular canal in dental panoramic radiographs, utilizing a large dataset of 2,100 images from three different imaging machines.
  • - Researchers used convolutional neural networks (CNNs) with U-Net architecture for automated segmentation, training multiple networks on various combinations of the image data and evaluating their performance with a test dataset.
  • - The best-performing network, trained on data from all three machines, achieved impressive metrics, including 90.6% precision and 88.9% Dice similarity coefficient, highlighting the effectiveness of the CNN approach and the importance of radiograph characteristics in deep learning development.
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  • ForensicNet is a multi-task deep learning network designed to automatically estimate sex and chronological age from panoramic radiographs, improving efficiency in forensic investigations compared to traditional manual methods.
  • The study utilized a dataset of 13,200 images, covering various sex and age ranges, to train the network and mitigate data bias.
  • Results showed ForensicNet achieved high accuracy in both age and sex estimation, demonstrating significant performance improvements through its attention branches for analyzing anatomical features.
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Background: Existing research on the association between cognitive function and physical activity in the older adults population with disabilities is limited. Additionally, there is a need to explore avenues for enhancing the longevity and quality of life among these individuals.

Objective: This study aimed to investigate the independent and joint associations between cognitive function and levels of physical activity in the older adults population with disabilities.

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Objectives: This study aimed to develop a robust and accurate deep learning network for detecting the posterior superior alveolar artery (PSAA) in dental cone-beam CT (CBCT) images, focusing on the precise localization of the centre pixel as a critical centreline pixel.

Methods: PSAA locations were manually labelled on dental CBCT data from 150 subjects. The left maxillary sinus images were horizontally flipped.

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  • This study looked at how well a special computer program called a deep convolutional neural network (DCNN) can find and classify two types of cysts in mouth x-rays.
  • Researchers used 1,209 x-rays, dividing them into groups for training and testing. They tested different DCNN models to see which one performed the best.
  • The best model, EfficientDet-D3, was very accurate and outperformed general dentists, showing a lot of potential for helping in medical situations.
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Okadaic acid (OA) and its analogues cause diarrhetic shellfish poisoning (DSP) in humans, and risk assessments of these toxins require toxicity equivalency factors (TEFs), which represent the relative toxicities of analogues. However, no human death by DSP toxin has been reported, and its current TEF value is based on acute lethality. To properly reflect the symptoms of DSP, such as diarrhea without death, the chronic toxicity of DSP toxins at sublethal doses should be considered.

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  • Fibrodysplasia ossificans progressiva is a rare genetic disorder that causes abnormal bone growth in muscles and connective tissues, notably affecting areas like the head and neck, though this is less common.
  • The report discusses two specific cases: one patient had difficulty opening their mouth due to ossification in the lateral pterygoid muscle, while another experienced limited neck movement from ossification in the platysma muscle.
  • Clinicians should consider this condition when patients present with restricted mouth or neck movement and radiological signs of abnormal bone growth, and dentists should be cautious about invasive procedures for these individuals.
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Aim: We aimed to determine the role of extracellular peroxiredoxin 1 (Prdx1) in the pathogenesis of bacterial infections and inflammatory bone disease.

Materials And Methods: We first investigated the role of Prdx1 using knockout mice. Next, we determined the role of extracellular Prdx1 in bacterial infections by using a neutralizing antibody against Prdx1.

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The long head of the biceps (LHB) tendon is a common cause of shoulder pain. Biceps tenodesis is commonly used to address biceps and superior labrum pathology, reducing pain and restoring function. There are numerous techniques for biceps tenodesis, and it is unclear as to which single technique and approach provides significantly superior outcomes.

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Insulin resistance as a hallmark of type 2 DM (T2DM) plays a role in dementia by promoting pathological lesions or enhancing the vulnerability of the brain. Numerous studies related to insulin/insulin-like growth factor 1 (IGF-1) signaling are linked with various types of dementia. Brain insulin resistance in dementia is linked to disturbances in Aβ production and clearance, Tau hyperphosphorylation, microglial activation causing increased neuroinflammation, and the breakdown of tight junctions in the blood-brain barrier (BBB).

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Oxidative stress due to abnormal accumulation of reactive oxygen species (ROS) is an initiator of a large number of human diseases, and thus, the elimination and prevention of excessive ROS are important aspects of preventing the development of such diseases. Nuclear factor erythroid 2-related factor 2 (NRF2) is an essential transcription factor that defends against oxidative stress, and its function is negatively controlled by Kelch-like ECH-associated protein 1 (KEAP1). Therefore, activating NRF2 by inhibiting KEAP1 is viewed as a strategy for combating oxidative stress-related diseases.

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  • Cavernous nerve injury (CNI), often resulting from prostate cancer surgery, leads to damage in blood vessels and nerves, reducing the effectiveness of treatments like phosphodiesterase-5 inhibitors for erectile dysfunction.
  • Researchers studied heme-binding protein 1 (Hebp1) using a mouse model of CNI and found that it significantly improved erectile function by promoting the health of cavernous endothelial-mural cells and neurons.
  • The study highlighted that Hebp1 operates by decreasing vascular permeability and suggests its potential as a therapeutic option for various peripheral nerve injuries.
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Sarcopenic obesity (SO) is characterized by atrophic skeletal muscle impairment (sarcopenia) and obesity, which is associated with adverse outcomes of morbidity and mortality in elderly people. We investigated the effects of melatonin and exercise training on SO in 32-week-old senescence-accelerated mouse-prone-8 (SAMP8) mice fed a normal diet or a high-fat diet for 16 weeks. Melatonin, exercise, or melatonin and exercise for 8 weeks displayed reductions in the SO-induced impairment of skeletal muscle function and atrophy.

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Nodular fasciitis (NF) is a benign myofibroblastic proliferation that grows very rapidly, mimicking a sarcoma on imaging. It is treated by local excision, and recurrence has been reported in only a few cases, even when excised incompletely. The most prevalent diagnoses of temporomandibular joint (TMJ) masses include synovial chondromatosis, pigmented villonodular synovitis, and sarcomas.

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Bioluminescence imaging is useful for non-invasively monitoring inflammatory reactions associated with disease progression, and since NF-κB is a pivotal transcription factor that alters expressions of inflammatory genes, we generated novel NF-κB luciferase reporter (NF-κB-Luc) mice to understand the dynamics of inflammatory responses in whole body, and also in various type of cells by crossing NF-κB-Luc mice with cell-type specific Cre expressing mice (NF-κB-Luc:[Cre]). Bioluminescence intensity was significantly increased in NF-κB-Luc (NKL) mice exposed to inflammatory stimuli (PMA or LPS). Crossing NF-κB-Luc mice with Alb-cre mice or Lyz-cre mice generated NF-κB-Luc:Alb (NKLA) and NF-κB-Luc:Lyz2 (NKLL) mice, respectively.

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Purpose: Fat browning contributes to energy consumption and may have metabolic benefits against obesity; however, the potential roles of lactate and β-hydroxybutyrate (β-HB) in fat browning remain unclear. We investigated the roles of a single bout of aerobic exercise that increases lactate and β-HB levels in the fasted state on the regulation of fat browning in rats and humans.

Methods: Male Sprague-Dawley rats were exposed to 24-h fasting and/or a single bout moderate-intensity aerobic exercise (40 min): sedentary (CON), exercise (ND-EX), fasting (FAST), and exercise + fasting (F-EX).

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Severe vascular and nerve damage from diabetes is a leading cause of erectile dysfunction (ED) and poor response to oral phosphodiesterase 5 inhibitors. Argonaute 2 (Ago2), a catalytic engine in mammalian RNA interference, is involved in neurovascular regeneration under inflammatory conditions. In the present study, we report that Ago2 administration can effectively improve penile erection by enhancing cavernous endothelial cell angiogenesis and survival under diabetic conditions.

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Mucormycosis is a rare, invasive fungal infection that progresses aggressively and requires prompt surgery and appropriate treatment. The number of cases of mucormycosis in coronavirus disease 2019 (COVID-19) patients has recently increased, and patients with uncontrolled diabetes mellitus are particularly at an elevated risk of infection. This report presents a case of mucormycosis-related osteomyelitis of the maxilla in a 37-year-old man with diabetes mellitus.

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  • Convolutional neural networks (CNNs) are emerging as a powerful tool in medical research, particularly for early disease detection and diagnosis, which is the focus of this study on apical lesion segmentation from panoramic radiographs.
  • The research involved analyzing 1000 panoramic images of apical lesions, dividing them into training, validation, and test datasets, and assessing performance using precision, recall, and F1-score metrics.
  • The results showed that the deep CNN algorithm (U-Net) effectively segmented a majority of apical lesions, achieving high F1-scores (0.828, 0.815, and 0.742) at various thresholds, highlighting its potential in medical imaging applications.
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Background: Aging is a natural process that an organism gradually loses its physical fitness and functionality. Great efforts have been made to understand and intervene in this deteriorating process. The gut microbiota affects host physiology, and dysbiosis of the microbial community often underlies the pathogenesis of host disorders.

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