Publications by authors named "Gyu Choi"

Article Synopsis
  • Cardiovascular disease is a major global health issue, and omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), can improve various cardiovascular risk factors.
  • A systematic review of randomized controlled trials found that both EPA and DHA lower triglyceride levels, with DHA having a slightly stronger effect, and both increase beneficial HDL cholesterol, with DHA also increasing LDL particle size which reduces its atherogenicity.
  • The research indicates that DHA may be more effective than EPA in reducing heart rate and blood pressure, but there's a lack of high-quality studies comparing their independent effects on cardiovascular risks, highlighting the need for further research.
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BACKGROUND Emergence agitation, or delirium, occurs during early recovery from general anesthesia and involves disorientation, excitation, and uncontrolled physical movements. Dexmedetomidine is an alpha agonist that has sedative, anxiolytic, analgesic, and sympatholytic activities and is used as a continuous infusion to prevent emergence agitation. This study aimed to evaluate patients aged 65 years and older undergoing general anesthesia to determine the 90% effective dose (ED90) of dexmedetomidine continuous intraoperative infusion to prevent emergence agitation.

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Systemic inflammatory response (SIR) is a crucial determinant of disease progression and survival in patients with colorectal cancer. This study investigated the prognostic relevance of changes in the platelet count on survival and the predictive value of changes in the platelet-to-lymphocyte ratio (PLR) and neutrophil-to-lymphocyte ratio (NLR) on the pathological tumor response to preoperative chemoradiotherapy (CRT) in patients with microsatellite instability-high (MSI-H) rectal cancer. From 2011 to 2022, data of 46 consecutive patients with MSI-H rectal cancer who were treated with preoperative CRT followed by curative surgery at Kyungpook National University Chilgok Hospital (Daegu, South Korea) were retrospectively analyzed.

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  • Endoscopic epidural neuroplasty (EEN) is a procedure that uses direct visualization to better relieve nerve pain in the back compared to the traditional percutaneous epidural neuroplasty (PEN).
  • A study examined the effectiveness of EEN and PEN on lower back and radicular pain by analyzing patient records, finding that 107 patients underwent either EEN (73) or PEN (34).
  • Results showed that patients who received EEN reported greater pain reduction on the Visual Analog Scale (VAS) and improved functionality on the Oswestry Disability Index (ODI) at 1 day and at both 1 and 6 months after treatment compared to those who received PEN.
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  • The study assessed how preoperative MRI characteristics influence the outcomes of patients with large single hepatocellular carcinoma (HCC) undergoing surgery.
  • It analyzed data from 151 patients, focusing on tumor size, margins, and the degree of hypovascularity during MRI, finding that factors like larger tumor size and greater hypovascularity were linked to worse survival rates.
  • The results highlighted the need for careful management in patients with specific MRI findings, indicating that these features could help tailor treatment strategies post-surgery.
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Identification of the Internet of Things (IoT) devices has become an essential part of network management to secure the privacy of smart homes and offices. With its wide adoption in the current era, IoT has facilitated the modern age in many ways. However, such proliferation also has associated privacy and data security risks.

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  • All-Van der Waals (vdW) heterostructures with sharp interfaces are being developed for efficient spintronic applications at room temperature.
  • A novel vdW heterostructure combines a topological insulator (TI) with a ferromagnet, improving spin-to-charge conversion efficiency and overcoming current leakage issues.
  • This design achieves a significant increase in performance, surpassing conventional spin-orbit-torque devices, and shows promise for current-controlled magnetization switching in future technologies.
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  • Several types of human stem cells are utilized to create 3D liver organoids for research on liver disease and physiology, with a new method allowing primary human hepatocytes to be converted into bipotent progenitor cells for this purpose.
  • The study compared organoids derived from these progenitor cells to those from human liver cells and induced pluripotent stem cells, highlighting their molecular traits and potential for biomedical applications.
  • Findings indicate that the new bipotent progenitor-derived organoids show superior characteristics, better mimic liver disease conditions, and enhance sensitivity in drug toxicity testing compared to traditional liver cell-derived organoids.
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In this study, selenium (Se)-rich antimony selenide (SbSe) films were fabricated by applying a solution process with the solvents ethylenediamine and 2-mercaptoethanol to optimize the photoelectrochemical (PEC) performance of the SbSe photocathode. Various antimony (Sb)-Se precursor solutions with different molar ratios of Sb and Se (Sb : Se = 1 : 1.5, 1 : 3, 1 : 4.

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Due to the success of minimally invasive liver surgery, laparoscopic and robotic minimally invasive donor hepatectomies (MIDH) are increasingly performed worldwide. We conducted a retrospective, multicentre, propensity score-matched analysis on right lobe MIDH by comparing the robotic, laparoscopic, and open approaches to assess the feasibility, safety, and early outcomes of MIDHs. From January 2016 until December 2020, 1194 donors underwent a right donor hepatectomy performed with a robotic (n = 92), laparoscopic (n = 306), and open approach (n = 796) at 6 high-volume centers.

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The global emergency of unexpected pathogens, exemplified by SARS-CoV-2, has emphasized the importance of vaccines in thwarting infection and curtailing the progression of severe disease. The scourge of tuberculosis (TB), emanating from the (Mtb) complex, has inflicted a more profound toll in terms of mortality and morbidity than any other infectious agents prior to the SARS-CoV-2 pandemic. Despite the existence of Bacillus Calmette-Guérin (BCG), the only licensed vaccine developed a century ago, its efficacy against TB remains unsatisfactory, particularly in preventing pulmonary Mtb infections in adolescents and adults.

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Breast cancer is a common cause of female mortality in developing countries. Early detection and treatment are crucial for successful outcomes. Breast cancer develops from breast cells and is considered a leading cause of death in women.

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Previous studies have reported pain reduction after Korean medicine (KM) treatment in patients with fractures. However, these studies were limited by small sample sizes and short observation periods. To address these limitations, we aimed to analyze the outcomes of patients with traumatic fractures who received integrative KM treatment and investigate their long-term progress through follow-up observations.

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The metabolic characteristics of Leuconostoc mesenteroides subsp. mesenteroides J18, which is mainly responsible for kimchi fermentation, on various carbon sources were investigated through carbon utilization, metabolite, and transcriptome analyses at different culture conditions (10 and 30 °C with/without 2.5% NaCl).

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Mesenchymal stem cells (MSCs) are promising candidates for tissue regeneration, cell therapy, and cultured meat research owing to their ability to differentiate into various lineages including adipocytes, chondrocytes, and osteocytes. As MSCs display different characteristics depending on the tissue of origin, the appropriate cells need to be selected according to the purpose of the research. However, little is known of the unique properties of MSCs in pigs.

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Remimazolam has advantages such as hemodynamic stability and rapid onset. We investigated the effects of induction doses on hemodynamics and recovery profiles for remimazolam compared to propofol in older patients. Sixty-nine patients aged >65 years were randomly assigned to either the propofol anesthesia group (P group) or the remimazolam anesthesia group with an induction dose of 6 mg/kg/h (R6 group) or 12 mg/kg/h (R12 group), followed by 1 mg/kg/h.

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Greater graft-failure-risk of female-to-male liver transplantation (LT) is thought to be due to acute decrease in hepatic-estrogen-signaling. Our previous research found evidence that female hepatic-estrogen-signaling decreases after 40 years or with macrosteatosis. Thus, we hypothesized that inferiority of female-to-male LT changes according to donor-age and macrosteatosis.

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Objectives: To assess whether the Liver Imaging Reporting and Data System (LI-RADS) category is associated with the treatment outcomes of small single hepatocellular carcinoma (HCC) after surgical resection (SR) and radiofrequency ablation (RFA).

Methods: This retrospective study included 357 patients who underwent SR (n = 209) or RFA (n = 148) for a single HCC of ≤ 3 cm between 2014 and 2016. LI-RADS categories were assigned.

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Turner syndrome (TS), a genetic disorder due to incomplete dosage compensation of X-linked genes, affects multiple organ systems, leading to hypogonadotropic hypogonadism, short stature, cardiovascular and vascular abnormalities, liver disease, renal abnormalities, brain abnormalities, and skeletal problems. Patients with TS experience premature ovarian failure with a rapid decline in ovarian function caused by germ cell depletion, and pregnancies carry a high risk of adverse maternal and fetal outcomes. Aortic abnormalities, heart defects, obesity, hypertension, and liver abnormalities, such as steatosis, steatohepatitis, biliary involvement, liver cirrhosis, and nodular regenerative hyperplasia, are commonly observed in patients with TS.

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The Food, Beverage & Tobacco (F&B) industry is an essential sector in the competitive economy. Procurement of production factors mainly depends on sales forecasting and the supply chain of raw materials. However, the conflict between Russia and Ukraine has jeopardized the global supply chain.

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Deep learning is an advanced machine learning technique that is used in several medical fields to diagnose diseases and predict therapeutic outcomes. In this study, using anteroposterior ankle radiographs, we developed a convolutional neural network (CNN) model to diagnose osteochondral lesions of the talus (OLTs) using ankle radiographs as input data. We evaluated whether a CNN model trained on anteroposterior ankle radiographs could help diagnose the presence of OLT.

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Background/aim: PIK3CA mediates various cellular processes, such as transformation, tumor initiation and proliferation, and resistance to apoptosis. This study was conducted to identify the clinical significance and prognostic effect of PIK3CA mutations in patients with residual rectal cancer who underwent surgery after neoadjuvant chemoradiotherapy (NACRT).

Patients And Methods: Formalin-fixed and paraffin-embedded surgical specimens were collected from 128 patients between January 2006 and December 2011 and analyzed using real-time polymerase chain reaction for hotspot mutations in exons 9 and 20 of the PIK3CA gene.

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Breast cancer is one of the most common invasive cancers in women and it continues to be a worldwide medical problem since the number of cases has significantly increased over the past decade. Breast cancer is the second leading cause of death from cancer in women. The early detection of breast cancer can save human life but the traditional approach for detecting breast cancer disease needs various laboratory tests involving medical experts.

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