Publications by authors named "Jeong Seok Choi"

Physiological changes, some of which lead to neurological alterations and cognitive decline, have been reported to occur in space. To date, it has not been possible to identify the direct effect of microgravity alone on neural circuits in vitro. Therefore, this study aimed to elucidate the impact of simulated microgravity (sμG) on neural circuit dynamics using a microphysiological system (MPS).

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Sagittally unstable intertrochanteric fracture (SUITF) is the posterior displacement of the shaft fragment (posterior sagging, [PS]) which causes difficulty in achieving an acceptable closed reduction in lateral view. This study aimed to validate the morphological characteristics of SUITF. Data of patients with acute intertrochanteric fractures who underwent surgery were retrospectively reviewed.

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Purpose: Malrotation of the radius following a shaft fracture can lead to persistent pain, limited motion, and adjacent joint instability. This study aimed to evaluate radial torsion patterns by specific location.

Methods: We included 50 patients with uninjured radii on computed tomography (CT).

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Radiation induced structural damage of salivary gland including reducing acinar cell and fibrosis. These changes result in hypofunction of salivary gland which has a significant impact on the quality of life of head and neck cancer patients who treated with radiotherapy. Nevertheless, no preventive method has been found.

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Objectives: Human minor salivary gland stem cells (huMSGSCs) are promising in regenerative medicine. Their multipotent capabilities enable tissue regeneration and offer treatment potential for various diseases. The effects of hypergravity (HyperG) and microgravity (MicroG) on stemness and therapeutic potential are not well explored.

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Article Synopsis
  • This study focuses on improving patient outcomes in radiotherapy for malignant tumors by collecting comprehensive multi-modal data generated during treatment, rather than looking at single time-points.
  • The data collected from multiple institutions underwent strict integrity checks and was analyzed using AI models, leading to a substantial dataset that includes over 30,000 imaging scans and metadata from 5,019 patients.
  • Results showed that the AI models effectively validated most of the data quality, achieving a high classification accuracy, which suggests that this structured dataset can significantly enhance future research in radiotherapy efficiency.
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Inflammatory biomarkers, including the neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), and platelet-to-lymphocyte ratio (PLR), have been utilized as prognostic factors in various diseases. This study aims to evaluate changes in the NLR, PLR, and LMR in patients diagnosed with a deep neck infections (DNI) to identify useful prognostic markers. This single-center, retrospective cohort study utilized data from the electronic medical records of patients admitted to the ENT department of a tertiary university hospital between January 2000 and August 2024.

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EGFR mutations are a major prognostic factor in lung adenocarcinoma. However, current detection methods require sufficient samples and are costly. Deep learning is promising for mutation prediction in histopathological image analysis but has limitations in that it does not sufficiently reflect tumor heterogeneity and lacks interpretability.

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/ Adenoidectomy and tonsillectomy are among the most commonly performed procedures in ENT practice. The neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), and platelet-to-lymphocyte ratio (PLR) are recognized inflammatory markers. This study aims to evaluate the changes in NLR, PLR, and LMR in patients undergoing adenoidectomy and tonsillectomy.

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Purpose: This study proposed a three-dimensional (3D) multi-modal learning-based model for the automated prediction and classification of lymph node metastasis in patients with non-small cell lung cancer (NSCLC) using computed tomography (CT) images and clinical information.

Methods: We utilized clinical information and CT image data from 4239 patients with NSCLC across multiple institutions. Four deep learning algorithm-based multi-modal models were constructed and evaluated for lymph node classification.

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Purpose: Laryngopharyngeal reflux disease (LPRD) is mainly treated with proton pump inhibitors (PPI) such as esomeprazole, which have shortcomings like delayed absorption and increased osteoporosis. Fexuprazan is a novel potent potassium-competitive acid blocker that inhibits gastric acid secretion with rapid onset and long duration of action. To assess the efficacy and safety of fexuprazan compared to esomeprazole in patients with LPRD.

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Article Synopsis
  • Recombinant human Bone morphogenetic proteins (rhBMP-2) have shown promise in treating nonunions, and this study specifically evaluates rhBMP-2 combined with hydroxyapatite granules and autologous bone for long bone defects due to infections.
  • The research included 24 patients diagnosed with various types of nonunion and bone defects, tracking their recovery over 12 months with regular assessments and radiographs.
  • Preliminary results indicated a majority of patients had successful outcomes, with 62.5% presenting atrophic nonunion, highlighting the potential effectiveness of this treatment combination.
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This study focused on a novel strategy that combines deep learning and radiomics to predict epidermal growth factor receptor (EGFR) mutations in patients with non-small cell lung cancer (NSCLC) using computed tomography (CT). A total of 1280 patients with NSCLC who underwent contrast-enhanced CT scans and EGFR mutation testing before treatment were selected for the final study. Regions of interest were segmented from the CT images to extract radiomics features and obtain tumor images.

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Hyposalivation is a common complaint among the elderly, but no established treatment prevents age-induced hyposalivation. Platelet derivatives such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF), and plasma rich in growth factor (PRGF), are used widely in different areas of regenerative medicine to enhance the wound healing processes. This study examined whether the local injection of the supernatant of activated PRP (saPRP) into the salivary gland (SG) could help prevent aging-induced SG dysfunction and explored the mechanisms responsible for the protective effects on the SG hypofunction.

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Despite the variety of treatment methods, comminuted inferior pole fractures of the patella remain difficult and technically demanding to achieve stable internal fixation. The purpose of this study is to evaluate the clinical outcomes of rim plate-augmented separate vertical wiring with supplementary fixation in the management of comminuted inferior pole fractures, AO/OTA 34-A1, C2, and C3, which has the secondary horizontal fracture line on lower articular boundary. From our study, bony union was achieved in all patients at an average of 3.

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Dry mouth is frequently observed in the elderly, and enhanced lipid accumulation plays a critical role in cellular senescence in the salivary gland (SG). We investigated the mechanisms that mediate lipogenesis-associated SG senescence. Adult (28.

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Crizotinib is an oral selective small-molecular tyrosine kinase inhibitor (TKI) that suppress the activity of anaplastic lymphoma kinase (ALK) and ROS1 kinases, as well as mesenchymal-epithelial transition. The cumulative clinical trials in patients with advanced ALK- or ROS1-rearrangement NSCLC indicate that crizotinib has significant antitumor activity and a tolerable safety profile, with mild or moderate adverse events of visual disorders, diarrhea, nausea, and vomiting. As with other TKIs, however, the occurrence of crizotinib-related interstitial lung disease (crizotinib-ILD) remains a major clinical dilemma that can lead to the permanent discontinuation of TKI during cancer treatment.

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Introduction: Salivary gland (SG) damage is commonly caused by aging, irradiation, and some medications, and currently, no damage modifying agent is available. However, cell therapy based on mesenchymal stem cells (MSCs) has been proposed as a therapeutic modality for irradiated SGs. Therefore, we administered cell-derived vesicles (CDVs) of adipose-derived mesenchymal stem cells (ADMSCs) to irradiated SG cells to investigate their radioprotective effects .

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Background: To date, no study has investigated the radiographic rotational profiles (RRPs) of the proximal and distal humerus. However, malrotation after minimally invasive surgery for humeral fracture has been an unsolved problem. Therefore, we aimed to investigate the RRPs of the proximal and distal humerus that linearly correlate with rotational status and show significant differences as the rotational status changes.

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Vocal cord paralysis caused by recurrent laryngeal nerve (RLN) injury during thyroidectomy results in hoarseness, aspiration, and dyspnea. We evaluated the usefulness of nerve guidance conduits (NGCs) constructed from an asymmetric polycaprolactone (PCL)/Pluronic F127 porous membrane and filled with platelet-rich plasma (PRP) for functional RLN regeneration. We evaluated the proliferation and migration of Schwann cells (SCs) after PRP treatment in vitro.

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Two field experiments were conducted to improve the conception rate of Hanwoo cow. The first experiment aimed to investigate the physiological condition of Hanwoo cows on estrus, including metabolic profiles and body condition score (BCS). The second experiment investigated the effect of a novel estrus detector on the artificial insemination (AI) conception rate for Hanwoo cows.

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Although the use of topical skin adhesives has increased as an alternative to conventional skin closure methods, studies on the incidence and risk factors of allergic contact dermatitis (ACD) to topical skin adhesives have been limited. The purpose of this study was to investigate the incidence and risk factors of ACD after the use of 2-octyl cyanoacrylate and n-butyl cyanoacrylate topical skin adhesives. We retrospectively reviewed 1145 patients (739 patients with 2-octyl cyanoacrylate and 406 patients with n-butyl cyanoacrylate) who underwent skin closure with topical skin adhesives.

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Article Synopsis
  • This study compared postoperative outcomes in patients with late-stage Kienböck disease treated with scaphocapitate arthrodesis (SCA), focusing on the effects of carpal-ulnar translation.
  • The research involved 39 patients, dividing them into translated and untranslated groups based on carpal position, and assessing various surgical factors and functional outcomes, including pain relief and range of motion.
  • It concluded that SCA effectively improves function and reduces pain, regardless of carpal-ulnar translation, but noted that significant overcorrection resulting in a radioscaphoid angle (RSA) less than 30° was more common in the translated group.
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Background: Neurogenic tumors account for about ten percent of all tumors of childhood, and benign tumor originating from Schwann cells is rare in peripheral nerves. Schwannoma of the tongue is quite rare in children.

Case Summary: We present the case of an 8-year-old male with schwannoma in the anterolateral tongue.

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Background: We examined the regenerative efficacy of the activated platelet-rich plasma (PRP) concentrate administered by local injection in an animal model mimicking partial glossectomy for tongue cancer.

Methods: Four-week-old mice were randomized to four groups; (1) a treatment-naïve control group, (2) a PRP group, (3) a hemiglossectomy group, and (4) a hemiglossectomy + PRP group. The activated PRP concentrate was injected into the deep layer of resected surfaces of mouse tongues immediately after excision, and tongue widths and lengths were measured on postoperative days (POD) 5 and 12.

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