1.Surgical treatment of hepatocellular carcinoma: an expert consensus-based practical recommendation from the Korean Liver Cancer Association
Min-Su PARK ; Jai Young CHO ; Eunju KIM ; Hee Young NA ; YoungRok CHOI ; Na Reum KIM ; Young-In YOON ; Boram LEE ; Eun Sun JANG ; Yun Kyung JUNG ; Kyung Sik KIM
Annals of Surgical Treatment and Research 2025;109(3):123-143
Compared with other treatments, surgical resection is an effective treatment method with the lowest local recurrence rate and the highest survival rate for hepatocellular carcinoma (HCC). To achieve excellent results after surgical treatment, it is essential to carefully select patients who are suitable for hepatic resection and minimize postoperative complications and liver function decline through standardized surgical methods and pre- and postoperative management. However, domestic and international treatment guidelines only broadly recommend the application of hepatic resection for HCC with a single tumor and good liver function. Hence, practical treatment guidelines are required that can be standardized and used according to the varying clinical environments, including indications for hepatic resection, preoperative evaluation, basic principles of hepatic resection, minimally invasive hepatic resection, pre- and postoperative patient management, surgical treatment considerations in specific infection situations, and follow-up after surgical resection. Accordingly, an expert group from the Korean Liver Cancer Association Research Committee has developed practical recommendations based on expert consensus regarding the surgical treatment of HCC through a Delphi study.
2.Comparison of the Clinical Outcomes Between Early and Delayed Transplantation After SARS-CoV-2Infection
Sang Hyun RA ; A Reum KIM ; Hyeon Mu JANG ; Euijin CHANG ; Seongman BAE ; Jiwon JUNG ; Min Jae KIM ; Yong Pil CHONG ; Sang-Oh LEE ; Sang-Ho CHOI ; Yang Soo KIM ; Sung-Han KIM
Journal of Korean Medical Science 2024;39(14):e137-
Our study analyzed 95 solid organ transplant (SOT) and 78 hematopoietic stem cell transplant (HSCT) recipients with prior coronavirus disease 2019 (COVID-19). Patients who underwent transplantation within 30 days of COVID-19 infection comprised the early group, and those who underwent transplantation post-30 days of COVID-19 infection comprised the delayed group. In the early transplantation group, no patient, whether undergoing SOT and HSCT, experienced COVID-19-associated complications. In the delayed transplantation group, one patient each from SOT and HSCT experienced COVID-19-associated complications. Additionally, among early SOT and HSCT recipients, two and six patients underwent transplantation within seven days of COVID-19 diagnosis, respectively. However, no significant differences were observed in the clinical outcomes of these patients compared to those in other patients. Early transplantation following severe acute respiratory syndrome coronavirus 2 infection can be performed without increased risk of COVID-19-associated complications. Therefore, transplantation needs not be delayed by COVID-19 infection.
3.Comparison of the Data of a Next-Generation Sequencing Panel from K-MASTER Project with That of Orthogonal Methods for Detecting Targetable Genetic Alterations
Yoon Ji CHOI ; Jung Yoon CHOI ; Ju Won KIM ; Ah Reum LIM ; Youngwoo LEE ; Won Jin CHANG ; Soohyeon LEE ; Jae Sook SUNG ; Hee-Joon CHUNG ; Jong Won LEE ; Eun Joo KANG ; Jung Sun KIM ; Taekyu LIM ; Hye Sook KIM ; Yu Jung KIM ; Mi Sun AHN ; Young Saing KIM ; Ji Hyun PARK ; Seungtaek LIM ; Sung Shim CHO ; Jang Ho CHO ; Sang Won SHIN ; Kyong Hwa PARK ; Yeul Hong KIM
Cancer Research and Treatment 2022;54(1):30-39
Purpose:
K-MASTER project is a Korean national precision medicine platform that screened actionable mutations by analyzing next-generation sequencing (NGS) of solid tumor patients. We compared gene analyses between NGS panel from the K-MASTER project and orthogonal methods.
Materials and Methods:
Colorectal, breast, non–small cell lung, and gastric cancer patients were included. We compared NGS results from K-MASTER projects with those of non-NGS orthogonal methods (KRAS, NRAS, and BRAF mutations in colorectal cancer [CRC]; epidermal growth factor receptor [EGFR], anaplastic lymphoma kinase [ALK] fusion, and reactive oxygen species 1 [ROS1] fusion in non–small cell lung cancer [NSCLC], and Erb-B2 receptor tyrosine kinase 2 (ERBB2) positivity in breast and gastric cancers).
Results:
In the CRC cohort (n=225), the sensitivity and specificity of NGS were 87.4% and 79.3% (KRAS); 88.9% and 98.9% (NRAS); and 77.8% and 100.0% (BRAF), respectively. In the NSCLC cohort (n=109), the sensitivity and specificity of NGS for EGFR were 86.2% and 97.5%, respectively. The concordance rate for ALK fusion was 100%, but ROS1 fusion was positive in only one of three cases that were positive in orthogonal tests. In the breast cancer cohort (n=260), ERBB2 amplification was detected in 45 by NGS. Compared with orthogonal methods that integrated immunohistochemistry and in situ hybridization, sensitivity and specificity were 53.7% and 99.4%, respectively. In the gastric cancer cohort (n=64), ERBB2 amplification was detected in six by NGS. Compared with orthogonal methods, sensitivity and specificity were 62.5% and 98.2%, respectively.
Conclusion
The results of the K-MASTER NGS panel and orthogonal methods showed a different degree of agreement for each genetic alteration, but generally showed a high agreement rate.
4.Interleukin 13 on Microglia is Neurotoxic in Lipopolysaccharide-injected Striatum in vivo
Ah Reum HONG ; Jae Geun JANG ; Young Cheul CHUNG ; So-Yoon WON ; Byung Kwan JIN
Experimental Neurobiology 2022;31(1):42-53
To explore the potential function of interleukin-13 (IL-13), lipopolysaccharide (LPS) or PBS as a control was unilaterally microinjected into striatum of rat brain. Seven days after LPS injection, there was a significant loss of neurons and microglial activation in the striatum, visualized by immunohistochemical staining against neuronal nuclei (NeuN) and the OX-42 (complement receptor type 3, CR3), respectively. In parallel, IL-13 immunoreactivity was increased as early as 3 days and sustained up to 7 days post LPS injection, compared to PBS-injected control and detected exclusively within microglia. Moreover, GFAP immunostaining and blood brain barrier (BBB) permeability evaluation showed the loss of astrocytes and disruption of BBB, respectively. By contrast, treatment with IL-13 neutralizing antibody (IL-13NA) protects NeuN + neurons against LPSinduced neurotoxicity in vivo . Accompanying neuroprotection, IL-13NA reduced loss of GFAP + astrocytes and damage of BBB in LPS-injected striatum. Intriguingly, treatment with IL-13NA produced neurotrophic factors (NTFs) on survived astrocytes in LPS-injected rat striatum. Taken together, the present study suggests that LPS induces expression of IL-13 on microglia, which contributes to neurodegeneration via damage on astrocytes and BBB disruption in the striatum in vivo.
5.The Effect of Patient-Engaged Bedside Handoffs Protocol in Comprehensive Care Units
Bo Young LEE ; Kyung Jin PARK ; Jae Hyun IM ; A Reum SONG ; Mi Hyang YEON ; Hyun Ju SONG ; Do Jin JEON ; Kyu Won BAEK ; Joo Young JANG ; Su Jung CHOI
Journal of Korean Clinical Nursing Research 2022;28(3):223-232
Purpose:
The purpose of this study was to apply patient-engaged bedside handoffs in comprehensive care units, and to evaluate the effects of bedsides to nurses and patients.
Methods:
This study employed a cluster randomized cross-over design.Electrical Medical Record (EMR)-based handoffs and patient-engaged bedside handoffs were alternatively applied to 104 patients, who were assigned to a total of 30 clusters (nursing handoff teams) in 4 comprehensive care units at the S medical center in Seoul, and the patients evaluated each type of handoffs. A total of 139 nurses were also participated in the same units and evaluated each type of handoffs. Data were analyzed using t-test, Wilcoxon rank sum test, ANOVA, and Kruskal-Walls test.
Results:
The patient's satisfaction of the patient-engaged bedside handoffs was higher than that of the EMR-based handoffs (Z=-5.16, p<.001). On the other hand, the nurse's satisfaction of the patient-engaged bedside handoffs was significantly lower than that of the EMR-based handoffs (t=13.21, p<.001). There were no differences in length of the reporting time between two types of handoffs (t=-0.48, p=.634).
Conclusion
Patient satisfaction with the patient-engaged bedside handoffs was higher than that of EMR-based handoffs, and nurses' satisfaction with the patient-engaged bedside handoffs was significantly lower than that of EMR-based handoffs. Future studies are needed regarding the impacts of patient-engaged bedside handoffs on the quality of healthcare by identifying the benefits of the handoffs.
6.Mitochondrial Reactive Oxygen Species Elicit Acute and Chronic Itch via Transient Receptor Potential Canonical 3 Activation in Mice.
Seong-Ah KIM ; Jun Ho JANG ; Wheedong KIM ; Pa Reum LEE ; Yong Ho KIM ; Hue VANG ; Kihwan LEE ; Seog Bae OH
Neuroscience Bulletin 2022;38(4):373-385
Mitochondrial reactive oxygen species (mROS) that are overproduced by mitochondrial dysfunction are linked to pathological conditions including sensory abnormalities. Here, we explored whether mROS overproduction induces itch through transient receptor potential canonical 3 (TRPC3), which is sensitive to ROS. Intradermal injection of antimycin A (AA), a selective inhibitor of mitochondrial electron transport chain complex III for mROS overproduction, produced robust scratching behavior in naïve mice, which was suppressed by MitoTEMPO, a mitochondria-selective ROS scavenger, and Pyr10, a TRPC3-specific blocker, but not by blockers of TRPA1 or TRPV1. AA activated subsets of trigeminal ganglion neurons and also induced inward currents, which were blocked by MitoTEMPO and Pyr10. Besides, dry skin-induced chronic scratching was relieved by MitoTEMPO and Pyr10, and also by resveratrol, an antioxidant. Taken together, our results suggest that mROS elicit itch through TRPC3, which may underlie chronic itch, representing a potential therapeutic target for chronic itch.
Animals
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Antioxidants/pharmacology*
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Mice
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Mitochondria
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Pruritus/chemically induced*
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Reactive Oxygen Species/metabolism*
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TRPA1 Cation Channel
7.A Position Statement of the Utilization and Support Status of Continuous Glucose Monitoring in Korea
Won Jun KIM ; Jae Hyun KIM ; Hye Jin YOO ; Jang Won SON ; Ah Reum KHANG ; Su Kyoung KWON ; Ji Hye KIM ; Tae Ho KIM ; Ohk Hyun RYU ; Kyeong Hye PARK ; Sun Ok SONG ; Kang-Woo LEE ; Woo Je LEE ; Jung Hwa JUNG ; Ho-Chan CHO ; Min Jeong GU ; Jeongrim LEE ; Dal Lae JU ; Yeon Hee LEE ; Eun Kyung KIM ; Young Sil EOM ; Sung Hoon YU ; Chong Hwa KIM ;
Journal of Korean Diabetes 2021;22(4):225-237
The accuracy and convenience of continuous glucose monitoring (CGM), which efficiently evaluates glycemic variability and hypoglycemia, are improving. There are two types of CGM: professional CGM and personal CGM. Personal CGM is subdivided into real-time CGM (rt-CGM) and intermittently scanned CGM (isCGM). CGM is being emphasized in both domestic and foreign diabetes management guidelines. Regardless of age or type of diabetes, CGM is useful for diabetic patients undergoing multiple insulin injection therapy or using an insulin pump. rt-CGM is recommended for all adults with type 1 diabetes (T1D), and can also be used in type 2 diabetes (T2D) treatments using multiple insulin injections. In some cases, short-term or intermittent use of CGM may be helpful for patients with T2D who use insulin therapy other than multiple insulin injections and/or oral hypoglycemic agents. CGM can help to achieve A1C targets in diabetes patients during pregnancy. CGM is a safe and cost-effective alternative to self-monitoring blood glucose in T1D and some T2D patients. CGM used in diabetes management works optimally with proper education, training, and follow up. To achieve the activation of CGM and its associated benefits, it is necessary to secure sufficient repetitive training and time for data analysis, management, and education. Various supports such as compensation, insurance coverage expansion, and reimbursement are required to increase the effectiveness of CGM while considering the scale of benefit recipients, policy priorities, and financial requirements.
10.Risk Assessment Program of Highly Pathogenic Avian Influenza with Deep Learning Algorithm
Hachung YOON ; Ah-Reum JANG ; Chungsik JUNG ; Hunseok KO ; Kwang-Nyeong LEE ; Eunesub LEE
Osong Public Health and Research Perspectives 2020;11(4):239-244
This study presents the development and validation of a risk assessment program of highly pathogenic avian influenza (HPAI). This program was developed by the Korean government (Animal and Plant Quarantine Agency) and a private corporation (Korea Telecom, KT), using a national database (Korean animal health integrated system, KAHIS). Our risk assessment program was developed using the multilayer perceptron method using R Language. HPAI outbreaks on 544 poultry farms (307 with H5N6, and 237 with H5N8) that had available visit records of livestock-related vehicles amongst the 812 HPAI outbreaks that were confirmed between January 2014 and June 2017 were involved in this study. After 140,000 iterations without drop-out, a model with 3 hidden layers and 10 nodes per layer, were selected. The activation function of the model was hyperbolic tangent. Precision and recall of the test gave F1 measures of 0.41, 0.68 and 0.51, respectively, at validation. The predicted risk values were higher for the “outbreak” (average ± SD, 0.20 ± 0.31) than “non-outbreak” (0.18 ± 0.30) farms ( The risk assessment model developed was employed during the epidemics of 2016/2017 (pilot version) and 2017/2018 (complementary version). This risk assessment model enhanced risk management activities by enabling preemptive control measures to prevent the spread of diseases.

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