566 results on '"Chung, Js"'
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2. Sequential vincristine, adriamycin, dexamethasone (VAD) followed by bortezomib, thalidomide, dexamethasone (VTD) as induction, followed by high-dose therapy with autologous stem cell transplant and consolidation therapy with bortezomib for newly diagnosed multiple myeloma: results of a phase II trial.
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Kim HJ, Yoon SS, Lee DS, Sohn SK, Eom HS, Lee JL, Chung JS, Kim K, Suh C, Won JH, Kim JS, Park JS, Kang HJ, Seong CM, Kim CS, Lee SJ, and Lee JH
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- 2012
3. Induction chemotherapy with S-1 plus cisplatin in patients with locally advanced squamous cell carcinoma of the head and neck.
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Choi YJ, Chung JS, Shin H, Cho GJ, Wang SG, Lee BJ, Cho BM, Joo YD, and Sohn CH
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- 2008
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4. Neoadjuvant docetaxel and cisplatin chemotherapy followed by local irradiation is highly active on locoregionally advanced squamous cell carcinoma of the head and neck.
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Shin H, Chung JS, Choi YJ, Lee BJ, Wang SG, Kim DW, and Cho GJ
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- 2008
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5. Increased serum pigment epithelium-derived factor is associated with microvascular complications, vascular stiffness and inflammation in Type 1 diabetes.
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Jenkins AJ, Zhang SX, Rowley KG, Karschimkus CS, Nelson CL, Chung JS, O'Neal DN, Januszewski AS, Croft KD, Mori TA, Dragicevic G, Harper CA, Best JD, Lyons TJ, and Ma J
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- 2007
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6. A522 Clinical Efficacy of Velcade/CTD Regimen in Patients with Relapsed or Refractory Multiple Myeloma
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Kim, YK, Lee, JJ, Sohn, SK, Joo, YD, Shin, HJ, Chung, JS, Moon, JH, Chae, YS, Ahn, JS, Yang, DH, and Kim, HJ
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- 2009
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7. PCV32 COST-EFFECTIVENESS OF CLINICAL PHARMACY SERVICES ON HYPERLIPIDAEMIC MANAGEMENT IN A PUBLIC HOSPITAL OF HONG KONG
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Lee, VWY, Chung, JS, Lee, KK, and Tomlinson, B
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- 2008
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8. PCV36 RATE OF LOW-DENSITY LIPOPROTEIN (LDL) GOAL ATTAINMENT WITH LIPID LOWERING THERAPIES AT A LI PID CLINIC IN A PUBLIC HOSPITAL OF HONG KONG—POSSIBLE ROLE OF A CLINICAL PHARMACY SERVICE
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Lee, VWY, Chung, JS, Ng, SL, Tomlinson, B, and Lee, KK
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- 2006
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9. Quantitation of whole blood Epstein-Barr virus DNA is useful for assessing treatment response in patients with non-Hodgkin's lymphoma.
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Jo SA, Hwang S, Kim SY, Shin H, Chung JS, Sol MY, Chang CL, and Lee EY
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- 2010
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10. Laparoscopic approach in the surgical treatment of large retrorectal tumors: a short-term experience at a single tertiary center case series in Korea.
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Chung JS, Kwak HD, and Ju JK
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Retrorectal tumors, although rare, pose diagnostic and treatment challenges due to their nonspecific symptoms and complex anatomical location. This single-center case series reports short-term outcomes of laparoscopic transabdominal resection as a surgical approach for large retrorectal tumors. Between 2017 and 2020, five patients underwent this procedure. The median patient age was 53.2 years (range, 34-60 years), and the median operating time was 130 minutes (range, 95-205 minutes). All tumors were located in the retrorectal space. The median tumor size was 5.8 × 4.3 cm (range, 3.5-7.5 cm). Biopsy results included epidermoid cysts, tailgut cyst, lipoma, and keratinous cyst. The median hospital stay was 7.8 days (range, 5-11 days), and the median follow-up duration was 78.0 days (range, 14-219 days). One patient developed a postoperative surgical site infection. Overall, laparoscopic transabdominal resection appears to be a minimally invasive and effective treatment option for retrorectal tumors.
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- 2024
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11. Interactions between glucagon like peptide 1 (GLP-1) and estrogens regulates lipid metabolism.
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Model JFA, Normann RS, Vogt ÉL, Dentz MV, de Amaral M, Xu R, Bachvaroff T, Spritzer PM, Chung JS, and Vinagre AS
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- Animals, Female, Rats, Ovariectomy, Liraglutide pharmacology, Rats, Sprague-Dawley, Lipolysis drug effects, Lipid Metabolism drug effects, Lipid Metabolism physiology, Glucagon-Like Peptide 1 metabolism, Estrogens metabolism, Estrogens pharmacology
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Obesity, characterized by excessive fat accumulation in white adipose tissue (WAT), is linked to numerous health issues, including insulin resistance (IR), and type 2 diabetes mellitus (DM2). The distribution of adipose tissue differs by sex, with men typically exhibiting android adiposity and pre-menopausal women displaying gynecoid adiposity. After menopause, women have an increased risk of developing android-type obesity, IR, and DM2. Glucagon-like peptide 1 (GLP-1) receptor agonists (GLP-1RAs) are important in treating obesity and DM2 by regulating insulin secretion, impacting glucose and lipid metabolism. GLP-1Rs are found in various tissues including the pancreas, brain, and adipose tissue. Studies suggest GLP-1RAs and estrogen replacement therapies have similar effects on tissues like the liver, central nervous system, and WAT, probably by converging pathways involving protein kinases. To investigate these interactions, female rats underwent ovariectomy (OVR) to promote a state of estrogen deficiency. After 20 days, the rats were euthanized and the tissues were incubated with 10 μM of liraglutide, a GLP-1RA. Results showed significant changes in metabolic parameters: OVR increased lipid catabolism in perirenal WAT and basal lipolysis in subcutaneous WAT, while liraglutide treatment enhanced stimulated lipolysis in subcutaneous WAT. Liver responses included increased stimulated lipolysis with liraglutide. Transcriptome analysis revealed distinct gene expression patterns in WAT of OVR rats and those treated with GLP-1RA, highlighting pathways related to lipid and glucose metabolism. Functional enrichment analysis showed estrogen's pivotal role in these pathways, influencing genes involved in lipid metabolism regulation. Overall, the study underscores GLP-1RA acting directly on adipose tissues and highlights the complex interactions between GLP-1 and estrogen in regulating metabolism, suggesting potential synergistic therapeutic effects in treating metabolic disorders like obesity and DM2., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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12. Fragment-based approaches to discover ligands for tumor-specific E3 ligases.
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Yim J, Kim S, Lee HH, Chung JS, and Park J
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- Humans, Ligands, Animals, Molecular Targeted Therapy, Proteasome Endopeptidase Complex metabolism, Ubiquitin-Protein Ligases metabolism, Neoplasms drug therapy, Neoplasms pathology, Proteolysis, Drug Discovery methods, Antineoplastic Agents pharmacology
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Introduction: Targeted protein degradation (TPD) has emerged as an innovative therapeutic strategy through selective degradation of specific proteins by harnessing the cellular ubiquitin-proteasome system (UPS), which involves over 600 E3 ubiquitin ligases. Recent proteome profiling reported tumor-specific E3 ligases in human. Development of those tumor-specific E3 ligase ligands would provide a solution for tumor-specific TPD for effective cancer treatment., Areas Covered: This review provides a comprehensive list of E3 ligases found only in specific types of tumor from public databases and highlights examples of their ligands discovered through fragment-based approaches. It details their discovery process and potential applications for precise TPD and effective cancer treatments., Expert Opinion: Current TPD strategies using proteolysis-targeting chimeras (PROTACs) primarily utilize general E3 ligases, such as CRBN and VHL. Since these E3 ligases demonstrate effective protein degradation activity in most human cell types, CRBN and VHL-based PROTACs can exhibit undesired TPD in off-target tissues, which often leads to the side effects. Therefore, developing tumor-specific E3 ligase ligands can be crucial for effective cancer treatments. Fragment-based ligand discovery (FBLD) approaches would accelerate the identification of these tumor-specific E3 ligase ligands and associated PROTACs, thereby advancing the field of targeted cancer therapies.
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- 2024
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13. Traumatic Brain Injury and Its Risk Factors in a Homeless Population.
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Bennett N, Chung JS, Lundstern MS, and Bymaster A
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- Humans, Male, Female, Risk Factors, Adult, Middle Aged, Incidence, California epidemiology, Young Adult, Alcoholism epidemiology, Cohort Studies, Adolescent, Age Factors, Violence statistics & numerical data, Ill-Housed Persons statistics & numerical data, Brain Injuries, Traumatic epidemiology
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Objective: To characterize the traumatic brain injury (TBI) profile and its associated risk factors in homeless individuals in Santa Clara County, CA., Design: Observational cohort study., Setting: Two homeless shelter health clinics in Santa Clara County, CA., Participants: Currently or recently homeless individuals seeking health care at 2 homeless shelter health clinics between August 2013 and May 2014., Interventions: Not applicable., Main Outcome Measures: Demographics, TBI incidence and characteristics., Results: The findings indicate that TBI history in the homeless population was higher (79.7%) than in the general population (12%). Almost half of the population (49.2%) reported that their TBI occurred before the age of 18. Of the participants, 68.2% reported sustaining a TBI with loss of consciousness. TBI caused by violence (60%) was lower in this cohort than other homeless cohorts but was the main cause of injury regardless of age. Alcoholism was a risk factor for having more TBIs. No differences in TBI profile were found between sexes., Conclusions: Our findings underscore the need for more research on the lifetime risk factors associated with TBI to prevent and reduce the number of brain injuries in homeless populations., (Published by Elsevier Inc.)
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- 2024
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14. Antibiotic Dispensing Practices Among Community Retail Pharmacies and Registered Drugstores: Results from a Simulated Client Study in Lilongwe, Malawi.
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Lubanga AF, Bwanali AN, Kamanga W, Kathewera BS, Makole TJ, Mpinganjira SL, Mudenda S, Mitambo C, Cho Y, Yeum D, Chung JS, Park J, and Nyirenda T
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Introduction: Antimicrobial resistance (AMR) is largely driven by the inappropriate use of antibiotics. This has been attributed to the non-prescription sale of antibiotics in retail drug outlets. Despite the rising number of retail drug outlets in Malawi, the practice of drug dispensing in private pharmacies has not been evaluated. This study therefore assessed the prevalence of non-prescription sales of antibiotics in retail drug outlets in Lilongwe, Malawi., Methods: A community-based simulated client cross-sectional study was conducted in Lilongwe, Malawi from December 2023 to February 2024 using mystery shopping. Data were analyzed using IBM SPSS software version 29 using both descriptive and Analytical statistics. We computed simple proportions and conducted a hypotheses test using Chi-Square to test for Significance., Results: Antibiotic dispensing practices were surveyed in 51 retail drug outlets comprising 36 retail pharmacies and 15 drugstores. 35.3% (n=18) of the drug outlets had drug dispensing done by pharmacists, 13.7% (n=7) by pharmacy technicians, 21.5% (n=11) by pharmacy assistants and 25.5% (n=15) by drug dispensers who had no pharmacy-related training. The rate of non-prescription sales of antibiotics ranged between 53% for acute diarrhoea and 92% for upper respiratory tract infections. Amoxicillin was the most dispensed antibiotic across all case scenarios. Over 50% of dispensed antibiotics were done upon recommendation of the drug dispensers in the absence of a doctor's prescription. Furthermore, for all the dispensed antibiotics across all case scenarios, no advice was given for finishing a full course of the antibiotics., Conclusion: This study found high rates of over-the-counter dispensing of antibiotics, which call for urgent and comprehensive regulatory measures to control antibiotic consumption in an urban part of Malawi that risks increased AMR. These could range from enacting stringent antibiotic dispensing policies to deploying digital systems to monitor prescription practices and community education on rational antibiotic use., Competing Interests: The authors declare no conflicts of interest in this work., (© 2024 Lubanga et al.)
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- 2024
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15. Conditional PROTAC: Recent Strategies for Modulating Targeted Protein Degradation.
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Yim J, Park J, Kim G, Lee HH, Chung JS, Jo A, Koh M, and Park J
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- Humans, Proteins metabolism, Proteins chemistry, Proteins antagonists & inhibitors, Molecular Structure, Ubiquitin metabolism, Ubiquitin antagonists & inhibitors, Proteolysis drug effects, Proteasome Endopeptidase Complex metabolism
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Proteolysis-targeting chimeras (PROTACs) have emerged as a promising technology for inducing targeted protein degradation by leveraging the intrinsic ubiquitin-proteasome system (UPS). While the potential druggability of PROTACs toward undruggable proteins has accelerated their rapid development and the wide-range of applications across diverse disease contexts, off-tissue effects and side-effects of PROTACs have recently received attentions to improve their efficacy. To address these issues, spatial or temporal target protein degradation by PROTACs has been spotlighted. In this review, we explore chemical strategies for modulating protein degradation in a cell type-specific (spatio-) and time-specific (temporal-) manner, thereby offering insights for expanding PROTAC applications to overcome the current limitations of target protein degradation strategy., (© 2024 The Author(s). ChemMedChem published by Wiley-VCH GmbH.)
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- 2024
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16. Concussion history is associated with poor sleep quality in adolescent athletes: a cross-sectional study.
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Sahin S, Erdman AL, Loewen A, Miller SM, Jones JC, Chung JS, Janosky J, and Ulman S
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Study Objectives: While previous research has primarily focused on the immediate effects of concussion within the first year post-injury, this study examines the persistent effects of concussion on subsequent sleep quality in adolescent soccer players., Methods: This study utilized a cross-sectional design, recruiting a convenience sample of adolescent athletes from US Youth Soccer camps. Participants completed a self-reported questionnaire including the Pittsburgh Sleep Quality Index (PSQI) to assess their sleep quality. Athletes were also asked to report sport participation information, any past occurrence of concussion or knee injury, and any sport-related injury in the past 12 months. Independent Samples t -tests were performed to identify significant differences in PSQI scores between injured and non-injured participants., Results: A total of 177 participants (103 male, 14.61±1.88 years) were included in the analysis. The concussion injury group exhibited later bedtimes (difference: 0.32±0.05 hours; p =0.047), fewer hours of sleep (difference: 0.56±0.11 hours, p= 0.015), and more frequent sleep disturbances ( p= 0.012). Furthermore, these athletes reported lengthened sleep latency (difference: 2.55±3.36 minutes, p= 0.016) and higher levels of daytime dysfunction ( p= 0.041) following their concussion injuries. Moreover, athletes in the concussion injury group displayed worse sleep quality scores (difference: 0.42±0.06, p< 0.001) and higher total PSQI scores (difference: 1.91±0.41, p< 0.001). No significant differences were found based on past knee injury or sport-related injury in the past 12 months., Conclusions: These findings suggest the need for targeted interventions aimed at improving sleep quality in adolescent athletes with a history of concussion., (© 2024 American Academy of Sleep Medicine.)
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- 2024
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17. A brief and updated introduction to the neuroendocrine system of crustaceans.
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Simões LAR, Normann RS, Chung JS, and Vinagre AS
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- Animals, Neuropeptides metabolism, Reproduction physiology, Crustacea physiology, Crustacea metabolism, Neurosecretory Systems physiology, Neurosecretory Systems metabolism
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The neuroendocrine system of crustaceans is complex and regulates many processes, such as development, growth, reproduction, osmoregulation, behavior, and metabolism. Once stimulated, crustaceans' neuroendocrine tissues modulate the release of monoamines, ecdysteroids, and neuropeptides that can act as hormones or neurotransmitters. Over a few decades, research has unraveled some mechanisms governing these processes, substantially contributing to understanding crustacean physiology. More aspects of crustacean neuroendocrinology are being comprehended with molecular biology, transcriptome, and genomics analyses. Hence, these studies will also significantly enhance the ability to cultivate decapods, such as crabs and shrimps, used as human food sources. In this review, current knowledge on crustacean endocrinology is updated with new findings about crustacean hormones, focusing mainly on the main neuroendocrine organs and their hormones and the effects of these molecules regulating metabolism, growth, reproduction, and color adaptation. New evidence about vertebrate-type hormones found in crustaceans is included and discussed. Finally, this review may assist in understanding how the emerging chemicals of environmental concern can potentially impair and disrupt crustacean's endocrine functions and their physiology., Competing Interests: Declaration of competing interest As the corresponding author, I am sending the manuscript “A brief and updated introduction to the neuroendocrine system of crustaceans” in order to submit for publication on the Special Issue “Hormonal Regulation and Disruption in Invertebrates” in the Journal of Molecular and Cellular Endocrinology. In the name of all authors, I certify that this manuscript is not under consideration by any other journal and that all the authors have read the manuscript and agreed to have their names listed as authors. I also certify that all the authors collaborated in the development of this research work. Finally, there is no potential conflict of interest including any financial, personal or other relationships with other people or organizations related to this manuscript., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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18. Arctium lappa is a new Natural Host of Tomato Spotted Wilt Virus in Korea.
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Oh BG, Chung JS, Ju HJ, Yoon JY, and Baek E
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Burdock (Arctium lappa L., belongs to the family Asteraceae), is an edible plant and an oriental medicinal herb in Korea (Han and Koo, 1993). In July 2023, burdocks showing chlorotic ringspots and yellowing on the leaves were observed in nine of approximately 4,000 plants in a greenhouse in Daegu, South Korea. To determine the causal virus species, nine symptomatic leaves from each individual plant were collected and tested using commercially available immunostrips (Agdia, Elkhart, USA) for cucumber mosaic virus (CMV) and tomato spotted wilt virus (TSWV). Seven out of nine samples tested positive for TSWV only. TSWV in South Korea was first reported on sweet pepper from Yesan in 2004 (Kim et al., 2004) and has since spread to various crops. The first report of TSWV infecting burdock plants in the world was from Hawaii in 1995 (Bautista et al., 1995), but TSWV-infected burdock has not been reported in Korea. To further confirm the presence of TSWV, total RNA was extracted from TSWV-positive burdock leaves using the RNeasy Plant Mini Kit (Qiagen, Hilden, Germany) and used in reverse transcription-polymerase chain reaction (RT-PCR) assays with a specific primer set that amplifies 777 bp of nucleocapsid gene (N gene) of TSWV (Yoon et al., 2014). To obtain the complete genome sequence of this TSWV in the burdock plant, named TSWV-DG, fragments of L, M, and S segments were amplified and sequenced. The complete genome sequences of the L (8914 nt), M (4773 nt), and S (2946 nt) segments were obtained by overlapping RT-PCR amplicons. RT-PCR products were cloned into the pGEM-T Easy vector, and selected DNA clones were sequenced using Sanger method (Bioneer, Korea). The complete genome sequences were deposited to GenBank (LC790665, LC790666, and LC790667, respectively). BLASTn analysis showed that sequences of each TSWV-DG segment had maximum nucleotide identities of 99.5%, 99.5%, and 99.5% with TSWV-L, TSWV-M, and TSWV-S (OM154971, OM154970, and OM154969, respectively), which were isolated from water dropwort (Oenanthe crocata) in China (Qiu et al., 2023). To assess the biological activity of TSWV-DG, A. lappa and Nicotiana benthamiana were inoculated mechanically with sap from infected burdock leaves and maintained for visual inspection of virus symptoms at 25 ℃ at 3 weeks. TSWV-DG produced symptoms on the systemic leaves of A. lappa, that included chlorotic spots and yellowing, and on the leaves of N. benthamiana, that included chlorotic spots and mosaic patterns from 14 days-post-inoculation. Meanwhile, mock-inoculated A.lappa and N.benthamiana remained symptomless. The presence of TSWV on the inoculated leaves was subsequently confirmed through Immunostrip and RT-PCR analyses. TSWV may pose a significant threat to the production of A. lappa, which is cultivated as both leafy greens and root vegetables in Korea. Furthermore, A. lappa may not only be at risk of damage from TSWV infection but also act as a potential source of TSWV infection, thereby posing a risk of transmission to other key crops in Korea, such as pepper or potato (Yoon et al., 2014). This is the first report TSWV infecting burdock in South Korea.
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- 2024
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19. Mortality Among Veterans Following Traumatic Brain Injury: A Veterans Administration Traumatic Brain Injury Model System Study.
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Wittine LM, Ketchum JM, Silva MA, Hammond FM, Chung JS, Loyo K, Lezama J, and Nakase-Richardson R
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Few studies have examined long-term mortality following traumatic brain injury (TBI) in a military population. This is a secondary analysis of a prospective, longitudinal study that examines long-term mortality (up to 10 years) post-TBI, including analyses of life expectancy, causes of death, and risk factors for death in service members and veterans (SM/V) who survived the acute TBI and inpatient rehabilitation. Among 922 participants in the study, the mortality rate was 8.3% following discharge from inpatient rehabilitation. The mean age of death was 54.5 years, with death occurring on average 3.2 years after injury, and with an average 7-year life expectancy reduction. SM/V with TBI were nearly four times more likely to die compared with the U.S. general population. Leading causes of death were external causes of injury, circulatory disease, and respiratory disorders. Also notable were deaths due to late effects of TBI itself and suicide. Falls were a significant mechanism of injury for those who died. Those who died were also more likely to be older at injury, unemployed, non-active duty status, not currently married, and had longer post-traumatic amnesia, longer rehabilitation stays, worse independence and disability scores at rehabilitation discharge, and a history of mental health issues before injury. These findings indicate that higher disability and less social supportive infrastructure are associated with higher mortality. Our investigation into the vulnerabilities underlying premature mortality and into the major causes of death may help target future prevention, surveillance, and monitoring interventions.
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- 2024
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20. Application of ATR-FTIR Spectroscopy for Analysis of Salt Stress in Brussels Sprouts.
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Yun SM, Kim CS, Lee JJ, and Chung JS
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Salt stress is one of the environmental stresses that significantly reduces crop productivity and quality worldwide. Methods to overcome salt stress include developing salt-resistant crops by inserting various resistance genes or to diagnosing and responding to the effects of salt stress at an early stage. In this study, we investigate the effects of salinity stress on growth, photosynthetic efficiency, and metabolic changes in Brussels sprouts ( Brassica oleracea var. gemmifera). Fresh weight and leaf area decreased significantly with increasing NaCl concentration, indicating that salinity stress has a detrimental effect on plant growth. However, chlorophyll fluorescence parameters did not show significant changes, suggesting that photosynthetic efficiency was not significantly affected over 10 days. Fourier transform infrared (FTIR) spectroscopy revealed notable metabolic adjustments, especially in lipids, plastids, proteins, and carbohydrates, indicating biosynthesis of protective compounds such as anthocyanins and proline in response to salinity stress. Pearson correlation analysis confirmed a strong relationship between NaCl concentration and the observed physiological and metabolic changes. The findings highlight the potential of FTIR spectroscopy as a non-destructive tool for early detection of salinity stress and timely intervention to improve crop resilience and yield. This study highlights the widespread application of FTIR spectroscopy in agricultural research to manage abiotic stresses in crops.
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- 2024
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21. Alexithymia Prevalence, Characterization, and Associations With Emotional Functioning and Life Satisfaction: A Traumatic Brain Injury Model System Study.
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Neumann D, Hammond FM, Sander AM, Bogner J, Bushnik T, Finn JA, Chung JS, Klyce DW, Sevigny M, and Ketchum JM
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Objectives: Alexithymia an emotional processing deficit that interferes with a person's ability to recognize, express, and differentiate emotional states. Study objectives were to (1) determine rates of elevated alexithymia among people with moderate-to-severe traumatic brain injury (TBI) 1-year post-injury, (2) identify demographic and injury-related variables associated with high versus low-average levels of alexithymia, and (3) examine associations among alexithymia with other aspects of emotional functioning and life satisfaction., Setting: Data were collected during follow-up interviews across four TBI Model System (TBIMS) centers., Participants: The sample consisted of 196 participants with moderate-to-severe TBI enrolled in the TBIMS. They were predominately male (77%), White (69%), and had no history of pre-injury mental health treatment (66.3%)., Design: Cross-sectional survey data were obtained at study enrollment and 1-year post-injury., Main Measures: Toronto Alexithymia Scale-20 (TAS-20) as well as measures of anger, aggression, hostility, emotional dysregulation, post-traumatic stress, anxiety, depression, resilience and life satisfaction. Sociodemographic information, behavioral health history and injury-related variables were also included., Results: High levels of alexithymia (TAS-20 score > 1.5 standard deviation above the normative mean) were observed for 14.3%. Compared to individuals with low/average levels of alexithymia, the high alexithymia group tended to have lower levels of education. At 1-year follow-up, high TAS-20 scores were strongly associated with emotional dysregulation and post-traumatic stress; moderately associated with anger, hostility, depression, anxiety, lower resilience and lower satisfaction with life; and weakly associated with aggression., Conclusion: These findings provide further evidence that alexithymia is associated with poor emotional functioning and life satisfaction after TBI. Longitudinal studies are needed to determine if alexithymia is a risk factor that precipitates and predicts worse emotional outcomes in the TBI population. This line of work is important for informing treatment targets that could prevent or reduce of psychological distress after TBI., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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22. Longitudinal Investigation of Alexithymia as a Predictor of Empathy, Emotional Functioning, Resilience, and Life Satisfaction 2 Years After Brain Injury.
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Neumann D, Hammond FM, Sander AM, Bogner J, Bushnik T, Finn JA, Chung JS, Klyce DW, Sevigny M, and Ketchum JM
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- Humans, Male, Female, Adult, Longitudinal Studies, Middle Aged, Emotions, Brain Injuries psychology, Affective Symptoms psychology, Resilience, Psychological, Personal Satisfaction, Brain Injuries, Traumatic psychology, Empathy
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Objective: To examine the unique contribution of alexithymia at 1 year after traumatic brain injury (TBI) to the prospective prediction of emotional and social health outcomes at 2 years after injury., Design: Multicenter, longitudinal cohort study., Setting: Data were collected during year 1 and year 2 postinjury follow-up interviews across 4 TBI Model System centers., Participants: Persons with TBI (N=175; 134 men and 41 women) who had English fluency and were capable of providing self-reported data., Interventions: Not applicable., Main Outcome Measures: Primary independent variable was the Toronto Alexithymia Scale-20. Outcome measures included the Interpersonal Reactivity Index, National Institute of Health Toolbox Emotion Battery Anger, Difficulty with Emotion Regulation Scale, Connor-Davidson Resilience Scale, Posttraumatic Stress Disorder Checklist - Civilian, Satisfaction with Life Scale, General Anxiety Disorder-7, Patient Health Questionnaire 9, suicidal ideation, and problematic substance use., Results: Simple adjusted models demonstrated that after controlling for the specific outcome at year 1, Toronto Alexithymia Scale-20 scores significantly predicted year 2 scores for perspective-taking, physical aggression, emotional dysregulation, resilience, anxiety, depression, and suicidal ideation. All of these predictive findings except for physical aggression were maintained in the fully adjusted models that also controlled for age, sex, education level, number of prior TBIs, and motor and cognitive functioning., Conclusions: Compared with those with lower alexithymia scores, persons with TBI who had higher alexithymia scores at 1 year after injury reported poorer emotional health at 2 years after TBI, even after controlling for year 1 outcome scores, sociodemographic characteristics, and injury-related factors. These results support the need to assess for elevated alexithymia and to provide interventions targeting alexithymia early in the TBI recovery process., (Copyright © 2024 American Congress of Rehabilitation Medicine. All rights reserved.)
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- 2024
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23. Position comparison of sport-related concussions in female youth soccer players.
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Worrall H, Podvin C, Althoff C, Chung JS, Sugimoto D, Stokes M, Radel LC, Cullum CM, Miller SM, and Jones JC
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- Humans, Female, Adolescent, Child, Prospective Studies, Athletic Injuries epidemiology, Incidence, Return to Sport statistics & numerical data, Soccer injuries, Brain Concussion epidemiology
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Objectives: Youth soccer participation, particularly among females, continues to grow worldwide. With the high incidence of sport-related concussion (SRC) in soccer, it is important to investigate if SRC occurs disproportionally by positions. Our hypothesis was to see no positional differences in SRCs, SRC-related characteristics, and outcomes among in female youth soccer athletes., Methods: Data were prospectively collected from participants at a single sports medicine institution between August 2015-April 2021. Female participants aged 8-18 diagnosed with SRC sustained during an organized soccer practice, scrimmage, or game were separated into 4 groups based on position: Forward, Midfielder, Defender, and Goalkeeper. Demographics, medical history, injury-related details, and outcomes were reviewed. A chi-square test or Fisher's exact test was used for categorical variables. Continuous variables were compared with Mann-Whitney or Kruskal-Wallis test., Results: Two hundred fourteen participants were included: 52 Forwards, 65 Midfielders, 63 Defenders, and 34 Goalkeepers. There were no significant differences between the groups in age, race, ethnicity, or previous concussion history. Differences in mechanism existed with Goalkeepers most commonly reporting Head to Body Part. Goalkeepers, which make up 1/11 of the total positions on the field, had a significantly higher proportion of SRCs compared to Field Positions. (9.1% vs 15.9%)At 3-month post-enrollment, there were no significant differences in reported symptoms or return-to-play between the different positions., Conclusion: In youth female soccer players, goalkeepers sustained a higher proportion of sport-related concussions compared to field players based upon the composition of a soccer team. The mechanism of injury also differed among the different soccer positions. However, no differences in concussion characteristics, outcomes, or RTP were seen across the different soccer positions.
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- 2024
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24. Penetrating missile injury to the heart without pericardial effusion: The immaculate bullet and the "Iron Man" injury.
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Butz J, Peng P, Gysbers JT, Cullom C, Mukherjee K, Sutjiadi B, Jafry SZM, Zaheer S, Chung JS, and Rabkin DG
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Competing Interests: The authors reported no conflicts of interest. The Journal policy requires editors and reviewers to disclose conflicts of interest and to decline handling or reviewing manuscripts for which they may have a conflict of interest. The editors and reviewers of this article have no conflicts of interest.
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- 2024
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25. Calcified amorphous tumor attached to the membranous septum: a rare clinical entity.
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Spencer D, Gysbers JT, Raghavan R, Tanwangco-Barker KM, Cullom CJ, Siddiqui D, Sakr A, Kherlopian AG, Chung JS, and Rabkin DG
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We report a rare case of a pedunculated calcified amorphous tumor (CAT) of the left ventricle attached by a stalk to the membranous septum in a 74-year-old woman who presented with a cerebrovascular accident. We believe this is the first report of a CAT attached to the membranous septum., Competing Interests: None of the authors have conflicts of interest or disclosures., (Published by Oxford University Press and JSCR Publishing Ltd. 2024.)
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- 2024
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26. Impact of Circulating Tumor Cell-Expressed Prostate-Specific Membrane Antigen and Prostate-Specific Antigen Transcripts in Different Stages of Prostate Cancer.
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Cho H, Byun SS, Son NH, Chung JI, Seo WI, Lee CH, Morgan TM, Han KH, and Chung JS
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- Humans, Male, Aged, Middle Aged, Prognosis, RNA, Messenger genetics, Prostatic Neoplasms pathology, Prostatic Neoplasms genetics, Prostatic Neoplasms blood, Prostatic Neoplasms mortality, Prostatic Neoplasms drug therapy, Prostatic Neoplasms, Castration-Resistant genetics, Prostatic Neoplasms, Castration-Resistant pathology, Prostatic Neoplasms, Castration-Resistant blood, Prostatic Neoplasms, Castration-Resistant drug therapy, Aged, 80 and over, Prospective Studies, Kallikreins blood, Kallikreins genetics, Gene Expression Regulation, Neoplastic, Neoplastic Cells, Circulating metabolism, Neoplastic Cells, Circulating pathology, Prostate-Specific Antigen blood, Glutamate Carboxypeptidase II genetics, Biomarkers, Tumor genetics, Biomarkers, Tumor blood, Antigens, Surface genetics, Antigens, Surface metabolism, Neoplasm Staging
- Abstract
Purpose: Prostate-specific membrane antigen (PSMA)-based images, which visually quantify PSMA expression, are used to determine prostate cancer micrometastases. This study evaluated whether a circulating tumor cell (CTC)-based transcript platform, including PSMA mRNA, could help identify potential prognostic markers in prostate cancer., Experimental Design: We prospectively enrolled 21 healthy individuals and 247 patients with prostate cancer [localized prostate cancer (LPCa), n = 94; metastatic hormone-sensitive prostate cancer (mHSPC), n = 44; and metastatic castration-resistant prostate cancer (mCRPC), n = 109]. The mRNA expression of six transcripts [PSMA, prostate-specific antigen (PSA), AR, AR-V7, EpCAM, and KRT 19] from CTCs was measured, and their relationship with biochemical recurrence (BCR) in LPCa and mCRPC progression-free survival (PFS) rate in mHSPC was assessed. PSA-PFS and radiological-PFS were also calculated to identify potential biomarkers for predicting androgen receptor signaling inhibitor (ARSI) and taxane-based chemotherapy resistance in mCRPC., Results: CTC detection rates were 75.5%, 95.3%, and 98.0% for LPCa, mHSPC, and mCRPC, respectively. In LPCa, PSMA [hazard ratio (HR), 3.35; P = 0.028) and PSA mRNA (HR, 1.42; P = 0.047] expressions were associated with BCR. Patients with mHSPC with high PSMA (HR, 4.26; P = 0.020) and PSA mRNA (HR, 3.52; P = 0.042) expressions showed significantly worse mCRPC-PFS rates than those with low expression. Increased PSA and PSMA mRNA expressions were significantly associated with shorter PSA-PFS and radiological PFS in mCPRC, indicating an association with drug resistance., Conclusions: PSMA and PSA mRNA expressions are associated with BCR in LPCa. In advanced prostate cancer, PSMA and PSA mRNA can also predict rapid progression from mHSPC to mCRPC and ARSI or taxane-based chemotherapy resistance., (©2024 American Association for Cancer Research.)
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- 2024
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27. Influence of Dietary Polyunsaturated Fatty Acid Intake on Potential Lipid Metabolite Diagnostic Markers in Renal Cell Carcinoma: A Case-Control Study.
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Kim YH, Chung JS, Lee HH, Park JH, and Kim MK
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- Humans, Case-Control Studies, Male, Female, Middle Aged, Aged, Fatty Acids, Unsaturated administration & dosage, Fatty Acids, Unsaturated blood, Carnitine O-Palmitoyltransferase metabolism, Adult, Lysophosphatidylcholines blood, Carnitine blood, Carnitine analogs & derivatives, Machine Learning, Lipid Metabolism, Tryptophan blood, Carcinoma, Renal Cell diagnosis, Kidney Neoplasms diagnosis, Biomarkers, Tumor blood
- Abstract
Non-invasive diagnostics are crucial for the timely detection of renal cell carcinoma (RCC), significantly improving survival rates. Despite advancements, specific lipid markers for RCC remain unidentified. We aimed to discover and validate potent plasma markers and their association with dietary fats. Using lipid metabolite quantification, machine-learning algorithms, and marker validation, we identified RCC diagnostic markers in studies involving 60 RCC and 167 healthy controls (HC), as well as 27 RCC and 74 HC, by analyzing their correlation with dietary fats. RCC was associated with altered metabolism in amino acids, glycerophospholipids, and glutathione. We validated seven markers (l-tryptophan, various lysophosphatidylcholines [LysoPCs], decanoylcarnitine, and l-glutamic acid), achieving a 96.9% AUC, effectively distinguishing RCC from HC. Decreased decanoylcarnitine, due to reduced carnitine palmitoyltransferase 1 (CPT1) activity, was identified as affecting RCC risk. High intake of polyunsaturated fatty acids (PUFAs) was negatively correlated with LysoPC (18:1) and LysoPC (18:2), influencing RCC risk. We validated seven potential markers for RCC diagnosis, highlighting the influence of high PUFA intake on LysoPC levels and its impact on RCC occurrence via CPT1 downregulation. These insights support the efficient and accurate diagnosis of RCC, thereby facilitating risk mitigation and improving patient outcomes.
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- 2024
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28. Experimental Study on Dynamic Characteristics of Damaged Post-Tensioning Concrete Sleepers Using Impact Hammer.
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Choi JY, Shin TH, Kim SH, and Chung JS
- Abstract
Concrete sleepers in operation are commonly damaged by various internal and external factors, such as poor materials, manufacturing defects, poor construction, environmental factors, and repeated loads and driving characteristics of trains; these factors affect the vibration response, mode shape, and natural frequency of damaged concrete sleepers. However, current standards in South Korea require only a subjective visual inspection of concrete sleepers to determine the damage degree and necessity of repair or replacement. In this study, an impact hammer test was performed on concrete sleepers installed on the operating lines of urban railroads to assess the field applicability of the modal test method, with the results indicating that the natural frequency due to concrete sleeper damage was lower than that of the undamaged state. Furthermore, the discrepancy between the simulated and measured natural frequencies of the undamaged concrete sleeper was approximately 1.87%, validating the numerical analysis result. The natural frequency of the damaged concrete sleepers was lower than that of the undamaged concrete sleeper, and cracks in both the concrete sleeper core and the rail seat had the lowest natural frequency among all the damage categories. Therefore, the damage degrees of concrete sleepers can be quantitatively estimated using measured natural-frequency values.
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- 2024
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29. Deciphering the Role of ERBB3 Isoforms in Renal Cell Carcinoma: A Comprehensive Genomic and Transcriptomic Analysis.
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Kim M, Lee HH, Won SD, Jang Y, Kim BG, Cho NH, Choi YD, Chung JS, and Han HH
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- Humans, Gene Expression Profiling, Protein Isoforms genetics, Protein Isoforms metabolism, Genomics, Gene Expression Regulation, Neoplastic genetics, Tumor Microenvironment, Receptor, ErbB-3 genetics, Receptor, ErbB-3 metabolism, Carcinoma, Renal Cell genetics, Kidney Neoplasms genetics
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ERBB3, a key member of the receptor tyrosine kinase family, is implicated in the progression and development of various human cancers, affecting cellular proliferation and survival. This study investigated the expression of ERBB3 isoforms in renal clear cell carcinoma (RCC), utilizing data from 538 patients from The Cancer Genome Atlas (TCGA) Firehose Legacy dataset. Employing the SUPPA2 tool, the activity of 10 ERBB3 isoforms was examined, revealing distinct expression patterns in RCC. Isoforms uc001sjg.3 and uc001sjh.3 were found to have reduced activity in tumor tissues, while uc010sqb.2 and uc001sjl.3 demonstrated increased activity. These variations in isoform expression correlate with patient survival and tumor aggressiveness, indicating their complex role in RCC. The study, further, utilizes CIBERSORTx to analyze the association between ERBB3 isoforms and immune cell profiles in the tumor microenvironment. Concurrently, Gene Set Enrichment Analysis (GSEA) was applied, establishing a strong link between elevated levels of ERBB3 isoforms and critical oncogenic pathways, including DNA repair and androgen response. RT-PCR analysis targeting the exon 21-23 and exon 23 regions of ERBB3 confirmed its heightened expression in tumor tissues, underscoring the significance of alternative splicing and exon utilization in cancer development. These findings elucidate the diverse impacts of ERBB3 isoforms on RCC, suggesting their potential as diagnostic markers and therapeutic targets. This study emphasizes the need for further exploration into the specific roles of these isoforms, which could inform more personalized and effective treatment modalities for renal clear cell carcinoma.
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- 2024
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30. Identifying the genes involved in the egg-carrying ovigerous hair development of the female blue crab Callinectes sapidus: transcriptomic and genomic expression analyses.
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Wang T, Bachvaroff T, and Chung JS
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- Animals, Female, Proteins metabolism, Transcriptome, Gene Expression Profiling, Genomics, Chitin metabolism, Brachyura
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Background: Crustacean female sex hormone (CFSH) controls gradually developing adult female-specific morphological features essential for mating and brood care. Specifically, ovigerous hairs are developed during the prepuberty molt cycle of the blue crab Callinectes sapidus that are essential for carrying the eggs until they finish development. Reduced CFSH transcripts by CFSH-dsRNA injections result in fewer and shorter ovigerous hairs than the control. This study aimed to identify the specific genes responsible for ovigerous hair formation using transcriptomic, genomic and expression analyses of the ovigerous setae at three stages: prepuberty at early (OE) and late premolt (OL), and adult (AO) stages., Results: The de novo Trinity assembly on filtered sequence reads produced 96,684 Trinity genes and 124,128 transcripts with an N50 of 1,615 bp. About 27.3% of the assembled Trinity genes are annotated to the public protein sequence databases (i.e., NR, Swiss-Prot, COG, KEGG, and GO databases). The OE vs. OL, OL vs. AO, and OE vs. AO comparisons resulted in 6,547, 7,793, and 7,481 differentially expressed genes, respectively, at a log2-fold difference. Specifically, the genes involved in the Wnt signaling and cell cycle pathways are positively associated with ovigerous hair development. Moreover, the transcripts of ten cuticle protein genes containing chitin-binding domains are most significantly changed by transcriptomic analysis and RT-qPCR assays, which shows a molt-stage specific, down-up-down mode across the OE-OL-AO stages. Furthermore, the expression of the cuticle genes with the chitin-binding domain, Rebers and Riddiford domain (RR)-1 appears at early premolt, followed by RR-2 at late premolt stage. Mapping these 10 cuticle protein sequences to the C. sapidus genome reveals that two scaffolds with a 549.5Kb region and 35 with a 1.19 Mb region harbor 21 RR1 and 20 RR2 cuticle protein genes, respectively. With these findings, a putative mode of CFSH action in decapod crustaceans is proposed., Conclusions: The present study describes a first step in understanding the mechanism underlying ovigerous hair formation in C. sapidus at the molecular level. Overall, demonstrating the first transcriptome analysis of crustacean ovigerous setae, our results may facilitate future studies into the decapod female reproduction belonging to the suborder Pleocyemata., (© 2023. The Author(s).)
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- 2023
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31. In her own words: a phenomenological analysis of stories told by female service members and veterans after traumatic brain injury.
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Chung JS, Jouk A, Licona NP, Terry JH, and Harris OA
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- Female, Male, Humans, Veterans psychology, Military Personnel, Brain Injuries, Traumatic psychology, Multiple Trauma
- Abstract
Purpose: Given the majority of Service Members and Veterans (SMV) who have sustained a traumatic brain injury (TBI) are male, the female experience with TBI has not been captured in the general understanding of TBI. To improve understanding of the experience of female SMV after TBI utilizing a qualitative phenomenological approach on stories as told by female SMV., Materials and Methods: Ten female SMV participated in storytelling workshops and created video stories documenting their personal experience with TBI. Workshops were hosted by the VA Palo Alto Health Care System Polytrauma System of Care (VAPAHCS PSC). A grounded thematic analysis was conducted on the video stories., Results: Three common content themes emerged from all the stories: (1) negative psychological and emotional impacts of TBI, (2) acceptance and healing process associated with recovery, and (3) military contexts. Negative psychological and emotional impacts included intrapersonal impacts such as negative emotions, suicidal ideation, and dealing with cognitive and physical challenges, and interpersonal impacts in relationships and loss of independence. Notably, all the stories acknowledged an acceptance and healing process, characterized by several subthemes including motivational factors, TBI education, spirituality, and advocacy work. Lastly, each story mentioned military context, highlighting the unique experience within this population., Conclusions: This phenomenological examination adds evidence-based understanding to the experience after TBI among female SMV. Each story uncovered nuanced and multifaceted issues that women experience in their TBI recovery. Our findings provide context to guide future intervention on the care, support, and TBI recovery for the female SMV population.
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- 2023
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32. Outcomes of coronary artery bypass surgery using modified del Nido cardioplegia in patients with poor ventricular function.
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Brown S, Nassar K, Razzouk J, Kashyap AK, Won M, Shehadeh T, Salabat R, Rabkin DG, and Chung JS
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- Adult, Humans, Retrospective Studies, Stroke Volume, Heart Arrest, Induced adverse effects, Coronary Artery Bypass adverse effects, Ventricular Function, Cardioplegic Solutions, Ventricular Function, Left
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Background: del Nido cardioplegia (DN) has been shown to be safe in adult patients undergoing isolated coronary artery bypass grafting with normal left ventricular ejection fraction. We sought to determine whether it was also safe in adult patients with diminished left ventricular function., Methods: All patients with preoperative left ventricular ejection fraction ≤ 40% undergoing isolated coronary artery bypass grafting between 1/1/2019 and 7/10/2022 were retrospectively analyzed. Off-pump and beating heart cases were excluded. Patients were divided by surgeon preference between conventional cardioplegia (CCP) and DN. Baseline and intraoperative characteristics and short-term postoperative outcomes were compared., Results: Six surgeons performed 829 isolated coronary artery bypass operations during the study. Two-hundred seventy-two met study criteria. Three surgeons used exclusively CCP for the duration of the study, two used exclusively DN and one switched from CCP to DN mid-way through. Group totals were: CCP n = 181 and DN n = 91. There were no significant differences in baseline characteristics including mean left ventricular ejection fraction (CCP 32.5 ± 7.4% vs. DN 33.4 ± 7.29%, p = 0.939). Other than a significant decrease in bypass time for DN (113.20 ± 37.2 vs. 122.43 ± 34.3 min, p = 0.043) there were no intergroup differences in urgency, number of grafts, ischemic time or incidence of blood transfusion. Postoperative outcomes between CCP and DN were similar including incidence of atrial fibrillation (12.2% vs. 8.8%, p = 0.403), intensive care length of stay (3.7 ± 2.3 vs. 4.3 ± 3.7 days, p = 0.886), total length of stay (5.7 ± 3.7 vs. 6.3 ± 4.4 days, p = 0.922) and 30-day mortality (3.85% vs. 1.10%, p = 0.205)., Conclusion: Compared to conventional cardioplegia, del Nido cardioplegia provides equivalent short-term outcomes in patients with low left ventricular ejection fraction undergoing isolated coronary artery bypass grafting., (© 2023. The Author(s).)
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- 2023
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33. Preliminary Study of Virtual-reality-guided Meditation for Veterans with Stress and Chronic Pain.
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Liu K, Madrigal E, Chung JS, Parekh M, Kalahar CS, Nguyen D, Timmerman M, and Harris OA
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- Humans, Middle Aged, Pain Measurement, Chronic Pain therapy, Meditation, Veterans, Virtual Reality, Multiple Trauma
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Context: Studies have found evidence for meditation's positive effects on health and well-being, but the difficulty of learning and engaging in meditation practice has been identified as a major barrier. Virtual reality (VR) technology may facilitate meditation practice by immersing users in a distraction-free and calming virtual environment, although this theory has yet to be rigorously tested., Objective: This study intended to examine the efficacy of VR-guided meditation in a population of US veterans as a tool to facilitate meditation and relaxation practice for reduction of stress and chronic pain as well as to elicit participants' feedback regarding their perceptions of VR-guided meditation., Design: The research team designed a preliminary study to identify the scope of future investigations., Setting: The study was conducted at an outpatient polytrauma clinic in a Veterans Affairs (VA) Palo Alto Health Care System, located in Palo Alto, California., Participants: Participants were a convenience sample of 31 veterans, with an average age of 55.2 years, who were patients at the polytrauma clinic and who had conditions with varying levels of stress and chronic pain., Intervention: All participants completed a 10-minute, VR-guided-meditation session based on the Zen form of meditation., Outcome Measures: At baseline immediately before and postintervention immediately after the VR meditation session, self-report ratings of pain and stress, physiological measures testing heart rate (HR) and blood pressure (BP), and participants' survey responses that assessed their experiences with, attitudes toward, and concerns about VR for clinical therapy were obtained., Results: Participants showed statistically significant reductions in self-reported pain and stress, HR, and systolic and diastolic BP. Participants reported high satisfaction with VR-guided meditation, and few reported negative side-effects., Conclusions: The study provided evidence for the usefulness of VR technology as a facilitator of meditation practice for reduction of stress and chronic pain. Future studies are needed to examine the long-term effects of repeated VR-guided-meditation sessions for patients with stress and chronic pain.
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- 2023
34. A Network Analysis of the PART-O at 1 and 2 Years After TBI: A Veterans Affairs Model Systems Study.
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West SJ, Klyce DW, Perrin PB, Juengst SB, Dams-O'Connor K, Vargas TA, Grover R, Finn JA, Eagye CB, Agtarap SD, Chung JS, and Campbell TA
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- Humans, Retrospective Studies, Cross-Sectional Studies, Veterans psychology, Brain Injuries, Traumatic diagnosis, Brain Injuries, Traumatic rehabilitation, Multiple Trauma
- Abstract
Objective: The construct of participation after traumatic brain injury (TBI) can be difficult to operationalize. Psychometric network analysis offers an empirical approach to visualizing and quantifying the associations between activities that comprise participation, elucidating the relations among the construct's components without assuming the presence of a latent common cause and generating a model to inform future measurement methods. The current research applied psychometric network analysis to the Participation Assessment with Recombined Tools-Objective (PART-O) within a sample of service members and veterans (SM/Vs) with a history of TBI at 1 and 2 years ( T1 and T2 ) postinjury., Participants: Participants ( N = 663) were SM/Vs with a history of TBI who completed comprehensive inpatient rehabilitation services at a Department of Veterans Affairs (VA) Polytrauma Rehabilitation Center (PRC)., Setting: Five VA PRCs., Design: Cross-sectional, retrospective analysis of data from the VA TBI Model Systems study., Main Measures: PART-O., Results: Network analysis demonstrated that the PART-O structure was generally consistent over time, but some differences emerged. The greatest difference observed was the association between "spending time with friends" and "giving emotional support" to others. This association was more than twice as strong at T2 as at T1 . The "out of the house" item was most central, as demonstrated by dense connections within its own subscale (Out and About) and items in other subscales (ie, Social Relations and Productivity). When examining items connecting the 3 subscales, the items related to giving emotional support, internet use, and getting out of the house emerged as the strongest connectors at T1 , and the internet was the strongest connector at T2 ., Conclusion: Providing emotional support to others is associated with greater participation across multiple domains and is an important indicator of recovery. Being out and about, internet use, and engagement in productive activities such as school and work shared strong associations with Social Relations. Network analysis permits visual conceptualization of the dynamic constructs that comprise participation and has the potential to inform approaches to measurement and treatment., Competing Interests: The authors declare no conflicts of interest.
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- 2023
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35. Structural Integrity Assessment of Concrete Sleepers by Modal Test Technique.
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Choi JY, Shin TH, Kim SH, and Chung JS
- Abstract
Concrete sleepers used in railway engineering are subject to damage, such as cracks and breakage. Damaged concrete sleepers undergo changes to their material and structural properties, including response, mode shape, and natural frequency. Therefore, we have proposed modal testing in this study to quantitatively evaluate the structural integrity of concrete sleepers. The results of modal testing were compared with those of numerical analysis and visual inspection. In addition, an impact hammer test was conducted to evaluate the structural performance of damaged concrete sleepers. The results show that natural-frequency analysis using the modal-testing technique can usefully complement visual inspection for structural performance evaluation in the field.
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- 2023
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36. Viscum album Induces Apoptosis by Regulating STAT3 Signaling Pathway in Breast Cancer Cells.
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Park YR, Jee W, Park SM, Kim SW, Bae H, Jung JH, Kim H, Kim S, Chung JS, and Jang HJ
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- Humans, Female, Plant Extracts pharmacology, Plant Extracts therapeutic use, Apoptosis, Signal Transduction, Cell Proliferation, Cell Line, Tumor, STAT3 Transcription Factor metabolism, Viscum album metabolism, Breast Neoplasms metabolism
- Abstract
In this study, we investigated the potential anticancer effects of Viscum album , a parasitic plant that grows on Malus domestica (VaM) on breast cancer cells, and explored the underlying mechanisms. VaM significantly inhibited cell viability and proliferation and induced apoptosis in a dose-dependent manner. VaM also regulated cell cycle progression and effectively inhibited activation of the STAT3 signaling pathway through SHP-1. Combining VaM with low-dose doxorubicin produced a synergistic effect, highlighting its potential as a promising therapeutic. In vivo, VaM administration inhibited tumor growth and modulated key molecular markers associated with breast cancer progression. Overall, our findings provide strong evidence for the therapeutic potential of VaM in breast cancer treatment and support further studies exploring clinical applications.
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- 2023
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37. Analysis of Missed Skeletal Injuries Detected Using Whole-Body Bone Scan Applied to Trauma Patients: A Case-Control Study.
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Chung JS, An S, Gong SC, and Jung PY
- Abstract
(1) Background: Skeletal injuries may be missed in patients presenting multiple traumas during initial assessment. A whole-body bone scan (WBBS) may aid the detection of missed skeletal injuries, but the current level of research in this regard is insufficient. Thus, this study aimed to investigate whether a WBBS is useful for the detection of missed skeletal injuries in patients with multiple traumas. (2) Methods: This retrospective, single-region, trauma center study was conducted at a tertiary referral center from January 2015 to May 2019. The rate of missed skeletal injuries detected via WBBSs was evaluated, and factors that could influence the outcome were analyzed and divided into missed and not-missed groups. (3) Results: A total of 1658 patients with multiple traumas who underwent WBBSs were reviewed. In the missed group, the percentage of cases with an Injury Severity Score (ISS) ≥ 16 was higher than the not-missed group (74.66% vs. 45.50%). The rate of admission route through surgery and embolization was high in the missed group. Moreover, the proportion of patients that experienced shock in the missed group was higher than that in the not-missed group (19.86% vs. 3.51%). In univariate analysis, ISS ≥ 16, admission route through surgery and embolization, orthopedic surgery involvement, and shock were related to missed skeletal injuries. ISS ≥ 16 was determined to be statistically significant in multivariate analysis. Additionally, a nomogram was constructed based on multivariable analysis. (4) Conclusions: Missed skeletal injuries were significantly associated with several statistical factors, and a WBBS can be used as a screening method to detect missed skeletal injuries in patients with multiple blunt traumas.
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- 2023
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38. Effective Circulating Tumor Cell Isolation Using Epithelial and Mesenchymal Markers in Prostate and Pancreatic Cancer Patients.
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Cha J, Cho H, Chung JS, Park JS, and Han KH
- Abstract
Circulating tumor cells (CTCs) display antigenic heterogeneity between epithelial and mesenchymal phenotypes. However, most current CTC isolation methods rely on EpCAM (epithelial cell adhesion molecule) antibodies. This study introduces a more efficient CTC isolation technique utilizing both EpCAM and vimentin (mesenchymal cell marker) antibodies, alongside a lateral magnetophoretic microseparator. The effectiveness of this approach was assessed by isolating CTCs from prostate ( n = 17) and pancreatic ( n = 5) cancer patients using EpCAM alone, vimentin alone, and both antibodies together. Prostate cancer patients showed an average of 13.29, 11.13, and 27.95 CTCs/mL isolated using EpCAM alone, vimentin alone, and both antibodies, respectively. For pancreatic cancer patients, the averages were 1.50, 3.44, and 10.82 CTCs/mL with EpCAM alone, vimentin alone, and both antibodies, respectively. Combining antibodies more than doubled CTC isolation compared to single antibodies. Interestingly, EpCAM antibodies were more effective for localized prostate cancer, while vimentin antibodies excelled in metastatic prostate cancer isolation. Moreover, vimentin antibodies outperformed EpCAM antibodies for all pancreatic cancer patients. These results highlight that using both epithelial and mesenchymal antibodies with the lateral magnetophoretic microseparator significantly enhances CTC isolation efficiency, and that antibody choice may vary depending on cancer type and stage.
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- 2023
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39. Effect of Antithrombin III Administration on the Prognosis of Severe Trauma Patients with Disseminated Intravascular Coagulation.
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Chung JS, Kim MJ, Choi YU, Kim JG, and Bae KS
- Abstract
Background: We aimed to investigate the effects of antithrombin III administration on the prognosis of severe trauma patients with disseminated intravascular coagulation (DIC)., Methods: Medical records of a total of 4023 patients who were admitted to the intensive care unit (ICU) at the single regional trauma center from January 2016 to December 2020 were retrospectively analyzed. After the exclusion of young patients (<15 years old), mild trauma (ISS < 16), non DIC, etc., a total of 140 patients were included in the study. These patients were classified into antithrombin III-administered and non-antithrombin III-administered groups. Clinical data, including laboratory findings, trauma- and ICU-related severity scores, prognosis (including length of hospital stay), and need for organ support, were retrospectively collected. We evaluated the characteristics of the two groups, and compared and analyzed the vital signs, laboratory findings, prognosis, and clinical outcomes of each group. With this, we analyzed the effect of antithrombin III administration in severe trauma patients with DIC., Results: Of the 140 patients, 61 were treated with antithrombin III. No significant difference was observed in the baseline characteristics between the two groups for initial laboratory results, initial vital signs, or trauma-related severity scores. The improvement of the sequential organ failure assessment (SOFA) score, a prognostic marker, was significantly greater in the administered group ( p = 0.009). Additionally, the antithrombin-administered group showed a larger improvement in the SOFA score than the non-administered group ( p = 0.002). However, there was no statistical difference between the two groups for the frequency or duration of organ support treatments (renal replacement therapy, mechanical ventilation), mortality, or length of hospital stay., Conclusion: Antithrombin III administration in severe trauma patients with DIC improved SOFA scores and aided in multi-organ dysfunction recovery. Appropriate indications should be studied to maximize the drug's improvement effect in patients with severe trauma in the future.
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- 2023
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40. Multifaceted Analysis of the Environmental Factors in Severely Injured Trauma: A 30-Day Survival Analysis.
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Jang SW, Kim HR, Jung PY, and Chung JS
- Abstract
(1) Background: Most factors that predict the in-hospital survival rate in patients with severe trauma are patient-related factors; environmental factors are not currently considered important. Predicting the severity of trauma using environmental factors could be a reliable and easy-to-use method. Therefore, the purpose of this study was to determine whether environmental factors affect the survival in patients with severe trauma. (2) Methods: Medical records of patients who activated trauma team in the single regional trauma center, from 2016 to 2020, were retrospectively analyzed. After exclusion of young patients (<19 years old), cases of mild trauma (ISS < 16), and non-preventable deaths (trauma and injury severity score <25%), a total of 1706 patients were included in the study. (3) Results: In the Cox proportional hazard regression analysis, older age, night compared with day, and high rainfall were identified as statistically significant environmental predictors of mortality due to severe trauma. The relationship between mortality and precipitation showed a linear relationship, while that between mortality and temperature showed an inverted U-shaped relationship. (4) Conclusions: Various environmental factors of trauma affect mortality in patients with severe trauma. In predicting the survival of patients with severe trauma, environmental factors are considered relatively less important, though they can be used effectively.
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- 2023
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41. Isavuconazole dosing in Asian patients with invasive mould infections: is there a role for therapeutic drug monitoring?
- Author
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Chan YFZ, Zhou YP, Tan BH, Chan CYY, Cherng BPZ, Teh YE, Wong GC, Kwa ALH, Lim TP, Goh KKK, Zulkifli FIB, and Chung JS
- Subjects
- Humans, Fungi, Nitriles therapeutic use, Antifungal Agents therapeutic use, Drug Monitoring, Triazoles therapeutic use
- Abstract
Competing Interests: Competing Interests The authors declare no conflicts of interest.
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- 2023
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42. A comparative study between transanal and transabdominal approaches in treatment of complete rectal prolapse.
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Kwak HD, Chung JS, and Ju JK
- Subjects
- Humans, Female, Aged, Treatment Outcome, Rectum surgery, Constipation surgery, Postoperative Complications surgery, Rectal Prolapse surgery, Laparoscopy methods
- Abstract
Formulating clear guidelines for the most reliable treatment methods for complete rectal prolapse appears challenging. The authors designed this study to compare the results according to the approaches for female complete rectal prolapse and to suggest a more effective method. The transanal and abdominal groups showed differences in operating time, hospital stay, and recurrence rate. However, both groups demonstrated improvement in postoperative functional evaluation., Purpose: There is a wide variety of surgical methods to treat rectal prolapse; however, to date, no clear agreement exists regarding the most effective surgical method. This study was designed to compare the results according to the surgical approach for complete rectal prolapse in women., Methods: This study was conducted from March 2016 to February 2021 on female patients with rectal prolapse who underwent surgery. First, all patients were classified into mucosal and complete layer groups to confirm the difference in results between the two groups, and only complete layer prolapse patients were divided into transanal and abdominal approaches to compare parameters and functional outcomes in each group., Results: A total of 180 patients were included, with an average age of 71.7 years and 102 complete prolapses. The complete layer group was found to have more abdominal access, longer operating time, and higher recurrence rates compared to the mucosal layer group. (p<0.001) When targeting only the complete layer patients, there were 65 patients with the transanal and 37 with the abdominal (laparoscopic) approaches. The abdominal approach group had a longer operating time and hospital stay (p<0.001, respectively) and lower recurrence rate than the transanal group (transanal vs. abdominal, 38% vs. 10.8%, p=0.003), while the Wexner constipation and incontinence scores showed improved results in both groups., Conclusion: Although operating time and hospitalization period were shorter in the transanal group, laparoscopic abdominal surgery is a procedure that can reduce the recurrent rate for complete rectal prolapse., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2023
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43. Comparison of abdominal and perineal approach for recurrent rectal prolapse.
- Author
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Chung JS, Ju JK, and Kwak HD
- Abstract
Purpose: Rectal prolapse is a benign disease in which the rectum protrudes below the anus. Although many studies have been reported on the treatment of primary rectal prolapse for many years, there is a lack of treatment or clinical research results on recurrent rectal prolapse. This study aimed to evaluate the outcomes of surgical approaches for recurrent rectal prolapse., Methods: We studied patients who underwent surgical treatment for recurrent rectal prolapse disease from March 2016 to February 2021. We analyzed the previous operation methods in patients with recurrent rectal prolapse, as well as the operation time, complication rate, hospital stay, and re-recurrence rates in the perineal and abdominal approach groups., Results: Out of a total of 239 patients, 41 patients who underwent surgery for recurrent rectal prolapse were retrospectively enrolled. Recurrent rectal prolapses were surgically treated either by the perineal approach (n = 25, 61.0%) or by the abdominal approach (n = 16, 39.0%). The operation times were significantly longer in the abdominal approach than in the perineal approach (98.44 minutes vs. 58.00 minutes, P = 0.001). Hospital stay was significantly longer in the abdominal approach than in the perineal approach (9.19 days vs. 6.00 days, P = 0.012). Re-recurrence rate after repeat repair was not significantly different between the 2 groups (P = 0.777)., Conclusion: Although the perineal approach shortened the operation time and hospital stay, there were no significant differences between the 2 groups in postoperative complications and re-recurrence rate. Both approaches can be good surgical options for the treatment of recurrent rectal prolapse., Competing Interests: Conflict of Interest: No potential conflict of interest relevant to this article was reported., (Copyright © 2023, the Korean Surgical Society.)
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- 2023
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44. Helixor-M Suppresses Immunostimulatory Activity through TLR4-Dependent NF-κB Pathway in RAW 264.7 Cells.
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Park D, Ko HM, Jee W, Park SM, Park YR, Jung JH, Kim HS, Chung WS, Kim SK, Chung JS, and Jang HJ
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Inflammation causes a protective immune response, which can be observed by examining the inflammatory responses of macrophages. Macrophages release various immunostimulatory factors when destroying external pathogens. We induced lipopolysaccharides (LPS) in RAW 264.7 cells, a macrophage cell line, to determine whether Helixor-M can cause immuno-suppression. Helixor-M is known to have anticancer and immune effects. However, an indicator that regulates immunity has not been clearly confirmed. To this end, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was conducted to confirm Helixor-M was not cytotoxic. Western blotting and real-time polymerase chain reaction (RT-PCR) confirmed the anti-inflammatory effects. Additionally, immunofluorescence assay confirmed the translocation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) p65, a representative inflammatory pathway. Helixor-M was found to be non-cytotoxic, induce the NF-κB pathway, and reduce the levels of pro-inflammatory cytokine and mitogen-activated protein kinase (MAPK). We found Helixor-M affected the PI3K/AKT/JNK pathway. Therefore, we confirmed Helixor-M acts as an anti-inflammatory agent through NF-κB, TLR4 and PI3K inhibition and that it could be an effective immunosuppressive drug.
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- 2023
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45. Mechanical Performance Evaluation of Repair Materials Suitable for Mechanical Pressurizing Equipment for Cross-Sectional Repair of Concrete Box Structures.
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Choi JY, Kim SH, Yu HS, and Chung JS
- Abstract
This study entailed performance tests to confirm the bond performance of the proposed new repair material and the pressurization effect of the developed mechanical pressurizing equipment. The physical property changes of the new repair material were reviewed by varying the mixing ratio of high aluminate cement (HAC)-mixed mortar. Strength tests were performed according to the mixing ratios of polymer and silica fume to improve the bond performance. To improve water retention, the mixing ratios of the cellulose and nylon fibers were adjusted, and the change in water retention was measured. The proposed repair material mixing ratio yielded the best performance when pressure was applied to the repair surface. Comparing the existing repair materials and the new repair material prepared by adjusting the ratios of HAC-mixed mortar, cellulose fiber, redispersible powder resin, and other factors confirmed that the new repair material has a high bond strength.
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- 2023
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46. Indicative factors for surgical or angiographic intervention in hemodynamically stable patients with blunt abdominal trauma: A retrospective cohort study.
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Chung JS, Jang SW, Jung PY, Kim MJ, Choi YU, Bae KS, and Kim S
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- Adult, Humans, Retrospective Studies, Risk Factors, Trauma Centers, Abdominal Injuries diagnostic imaging, Abdominal Injuries surgery, Wounds, Nonpenetrating diagnostic imaging, Wounds, Nonpenetrating surgery
- Abstract
Introduction: The standard of care for intraperitoneal injury in hemodynamically stable patients after blunt abdominal trauma has been replaced by non-operative management (NOM). However, selective NOM, depending on the situation, seems necessary in determining the treatment plan. In this study, we attempted to identify risk factors for surgical or angiographic intervention (SAI) in hemodynamically stable blunt abdominal trauma patients., Methods: This retrospective study which included adult patients who were brought to a regional trauma center was conducted from March 2015 to October 2019. We evaluated the characteristics of blunt abdominal trauma patients and analyzed factors that were related to the requirement of SAI in these patients. Patients were divided into SAI and conservative management (CM) groups., Results: We reviewed 1,176 patients, and after exclusions, of whom 248 blunt abdominal trauma and free fluid observed on CT were identified. The mean pulse rate was higher in the SAI than in the CM (P=0.025). Laboratory findings showed that lactate and delta neutrophil index (DNI) levels were higher in the SAI than in the CM (P=0.002 and 0.026 respectively). Additionally, the mean free fluid size in the SAI (85.69mm) was significantly larger than that in the CM (68.12mm; P=0.001), and blush was more frequently observed in the SAI (P<0.001). In multivariate analysis, only blush was an independent prognostic factor for SAI (OR 11.7, 95% CI, 5.1-30.8, P<0.001)., Conclusion: In hemodynamically stable patients with blunt abdominal trauma, blush but also high lactate and DNI are associated with the requirement of interventional radiology and/or surgery., (Copyright © 2022. Published by Elsevier Masson SAS.)
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- 2023
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47. Exploring racial/ethnic disparities in rehabilitation outcomes after TBI: A Veterans Affairs Model Systems study.
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Liou-Johnson V, Merced K, Klyce DW, Agtarap S, Finn JA, Chung JS, Campbell T, Harris OA, and Perrin PB
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- Humans, Racial Groups, Treatment Outcome, Veterans psychology, Brain Injuries, Traumatic rehabilitation, Military Personnel psychology
- Abstract
Background: Almost one-third of the U.S. military population is comprised of service members and veterans (SMVs) of color. Research suggests poorer functional and psychosocial outcomes among Black and Hispanic/Latine vs. White civilians following traumatic brain injury (TBI)., Objective: This study examined racial/ethnic differences in 5-year functional independence and life satisfaction trajectories among SMVs who had undergone acute rehabilitation at one of five Veterans Affairs (VA) TBI Model Systems (TBIMS) Polytrauma Rehabilitation Centers (PRCs)., Methods: Differences in demographic and injury-related factors were assessed during acute rehabilitation among White (n = 663), Black (n = 89), and Hispanic/Latine (n = 124) groups. Functional Independence Measure (FIM) Motor, FIM Cognitive, and Satisfaction with Life Scale (SWLS) scores were collected at 1, 2, and 5 years after injury. Racial/ethnic comparisons in these outcome trajectories were made using hierarchical linear modeling., Results: Black SMVs were less likely than White and Hispanic/Latine SMVs to have been deployed to a combat zone; there were no other racial/ethnic differences in any demographic or injury-related variable assessed. In terms of outcomes, no racial/ethnic differences emerged in FIM Motor, FIM cognitive, or SWLS trajectories., Conclusion: The absence of observable racial/ethnic differences in 5-year outcome trajectories after TBI among SMVs from VA TBIMS PRCs contrasts sharply with previous research identifying disparities in these same outcomes and throughout the larger VA health care system. Individuals enrolled in VA PRCs are likely homogenized on key social determinants of health that would otherwise contribute to racial/ethnic disparities in outcome trajectories.
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- 2023
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48. Perceived care partner burden at 1-year post-injury and associations with emotional awareness, functioning, and empathy after TBI: A TBI model systems study.
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Klyce DW, Merced K, Erickson A, Neumann DM, Hammond FM, Sander AM, Bogner JA, Bushnik T, Chung JS, and Finn JA
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- Humans, Female, Caregivers psychology, Cross-Sectional Studies, Emotions, Empathy, Brain Injuries, Traumatic psychology
- Abstract
Background: People with traumatic brain injury (TBI) can lack awareness of their own emotions and often have problems with emotion dysregulation, affective disorders, and empathy deficits. These impairments are known to impact psychosocial behaviors and may contribute to the burden experienced by care partners of individuals with TBI., Objective: To examine the associations of emotional awareness, emotional functioning, and empathy among participants with TBI with care partner burden., Method: This multisite, cross-sectional, observational study used data from 90 dyads (participants with TBI and their care partner) 1-year post-injury. Participants with TBI completed the Difficulty with Emotional Regulation Scale (DERS; Awareness, Clarity, Goals, Impulse, Nonacceptance, and Strategies subscales); PTSD Checklist-Civilian Version; NIH Toolbox Anger-Affect, Hostility and Aggression Subdomains; PHQ-9; GAD-7; and the Interpersonal Reactivity Index (empathic concern and perspective taking subscales). Care partners completed the Zarit Burden Inventory (ZBI) and provided demographic information., Results: Care partners were predominately female (77%), and most were either a spouse/partner (55.2%) or parent (34.4%). In an unadjusted model that included assessments of emotional awareness, emotional functioning, and empathy of the participant with TBI, the DERS-Awareness and NIH-Hostility subscales accounted for a significant amount of variance associated with care partner burden. These findings persisted after adjusting for care partner age, relationship, education, and the functional status of the participant with TBI (β= 0.493 and β= 0.328, respectively)., Conclusion: These findings suggest that high levels of hostility and low emotional self-awareness can significantly affect the burden felt by TBI care partners.
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- 2023
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49. Nano-Dimensional Carbon Nanosphere Supported Non-Precious Metal Oxide Composite: A Cathode Material for Sea Water Reduction.
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Jana J, Van Phuc T, Chung JS, Choi WM, and Hur SH
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Generation of hydrogen fuel at cathode during the electrolysis of seawater can be economically beneficial considering the vast availability of the electrolyte although it faces sluggishness caused by the anode reactions. In this regard a carbon nanosphere-protected CuO/Co
3 O4 (CCuU) composite was synthesized through heat treatment and was used as the cathode material for electrocatalytic seawater splitting. CCuU showed a significantly low overpotential of 73 mV@10 mA cm-2 , Tafel slope of 58 mV dec-1 and relatively constant activity and morphology over a long time electrocatalytic study. A synergy within metal oxide centers was observed that boosted the proton-electron transfer at the active site. Moreover, the presence of carbon support increased the electroactive surface area and stability of the composite. The activity of the CCuU was studied for HER in KOH and alkaline NaCl solution to understand the activity. This work will pave the way for designing mesoporous non-precious electrocatalysts towards seawater electrocatalysis.- Published
- 2022
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50. Recurrent bleeding after posthemorrhoidectomy caused by factor V deficiency: a case report and review of the literature.
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Chung JS, Kwak HD, and Ju JK
- Abstract
Congenital factor V (FV) deficiency is a rare hemorrhagic disorder that can cause excessive bleeding during and after surgery in the affected patient. This report is the case of a patient who had FV deficiency with recurrent posthemorrhoidectomy bleeding treated with the hemostatic procedure and fresh frozen plasma (FFP) transfusions. A 45-year-old male patient had previously undergone hemorrhoidectomy for multiple hemorrhoids at a local hospital. Hemorrhoidectomy was successful; however, he was transferred to our hospital for evaluation of the origin of the recurrent posthemorrhoidectomy bleeding and underwent a hemostatic procedure. This bleeding was treated with coagulation using electrocautery, multiple sutures, and FFP transfusion (1,600 mL/day) for 7 consecutive days. The patient's plasma FV activity was 23%. Early detection of clotting factor deficiency in patients with hemorrhagic events after surgical treatments may prevent unnecessary procedures such as reoperations and minimize the cost of replacement therapy such as large-volume FFP transfusion.
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- 2022
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