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World Journal of Gastroenterology 2014年第5期20卷 1365-1370页

作者： Ji Young Lee kyoung-mee kim Byung-Hoon Min Jun Haeng Lee Poong-Lyul Rhee Jae Jun kim Department of Medicine Samsung Medical Center Sungkyunkwan University School of Medicine Department of Pathology Samsung Medical Center Sungkyunkwan University School of Medicine

Epstein-Barr virus (EBV)-associated lymphoepithelioma-like gastric carcinoma (LELC) is characterized by a lower lymph node (LN) metastasis rate and a higher survival rate than other forms of gastric cancer. Although current prognosis for LELC is favorable, the most common approach is radical gastrectomy involving an extensive D2 lymph node dissection. Here, we report four cases of EBV-associated early LELC that were treated by an alternative approach, endoscopic submucosal dissection (ESD). The long-term outcome of this procedure is discussed. All patients were treated by ESD en bloc, and all ESD specimens showed tumor-free lateral resection margins. None of the lesions showed lymphovascular invasion. A pathological examination of ESD specimens revealed submucosal invasion of more than 500 μm in all four cases. One patient underwent additional radical surgery post-ESD; no residual tumor or LN metastasis was noted in the surgical specimen. The other three patients did not undergo additional surgery, either because of severe comorbidity or their refusal to undergo operation, but were subjected to medical follow-up. None of the ESD-treated patients reported local recurrence or distant metastases during the 27-32 mo of follow-up after ESD.

关键词： Endoscopic submucosal dissection Epstein-Barr virus Lymph node Lymphoepithelioma-like gastric carcinoma Prognosis

Single patient classifier as a prognostic biomarker in pT1N1 gastric cancer:Results from two large Korean cohorts

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Chinese Journal of Cancer Research 2021年第5期33卷 583-591页

作者： Yoon Young Choi Eunji Jang Hyunki kim kyoung-mee kim Sung Hoon Noh Tae Sung Sohn Yong-Min Huh Ji Yeong An Jae-Ho Cheong Department of Surgery CHA Ilsan Medical CenterCHA University School of MedicineGoyang-si 1205Korea Department of Surgery Yonsei University Health SystemSeoul 03722Korea Department of Radiology Yonsei University Health SystemSeoul 03722Korea Department of Pathology Yonsei University Health SystemSeoul 03722Korea Department of Pathology and Translational Genomics Samsung Medical Center Sungkyunkwan University School of MedicineSeoul 06351Korea Department of Surgery Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351Korea YUHS-KRIBB Medical Convergence Research Institute Seoul 03722Korea Brain Korea 21 PLUS Project for Medical Science Yonsei University College of MedicineSeoul 03722Korea

Objective:Benefits of adjuvant treatment in pT1 N1 gastric cancer(GC)remain ***,an effective biomarker for early GC is the need of the *** prognostic and predictive roles of single patient classifier(SPC)were validated in stageⅡ/Ⅲ*** this study,we aimed to elucidate the role of SPC as a biomarker for pT1 N1 ***:The present retrospective biomarker study(NCT03485105)enrolled patients treated for pT1 N1 GC between 1996 and 2012 from two large hospitals(the Y cohort and S cohort).For SPC,mRNA expression of four classifier genes(GZMB,WARS,SFRP4 and CDX1)were evaluated by real-time reverse transcription-polymerase chain reaction *** SPC was revised targeting pT1 stages and the prognosis was stratified as high-and lowrisk group by the expression of SFRP4,a representative epithelial-mesenchymal transition ***:SPC was evaluated in 875 patients(n=391 and 484 in the Y and S cohorts,respectively).Among 864 patients whose SPC result was available,41(4.7%)patients experience GC *** to revised SPC,254(29.4%)patients were classified as high risk[123(31.5%)and 131(27.1%)in the Y and S cohorts,respectively].The high risk was related to frequent recurrence in both Y and S cohort(log-rank P=0.023,P<0.001,respectively),while there was no difference by GZMB and WARS *** analyses of the overall-cohort confirmed the high risk of revised SPC as a significant prognostic factor[hazard ratio(HR):4.402(2.293-8.449),P<0.001]of GC.A significant difference was not detected by SPC in the prognosis of patients in the presence and absence of adjuvant treatment(log-rank P=0.670).Conclusions:The present study revealed the revised SPC as a prognostic biomarker of pT1 N1 GC and suggested the use of the revised SPC for early-stage GC as like stageⅡ/Ⅲ.

关键词： Gastric cancer biomarker prognosis chemotherapy

Comprehensive molecular analysis to predict the efficacy ofchemotherapy containing bevacizumab in patients with metastaticcolorectal cancer

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肿瘤学研究(英文) 2023年第6期31卷 855-866页

作者： SUNG HEE LIM HEE JIN CHO kyoung-mee kim HO YEONG LIM WON KI KANG JEEYUN LEE YOUNG SUK PARK HEE CHEOL kim SEUNG TAE kim Division of Hematology/Oncology Department of MedicineSamsung Medical CenterSungkyunkwan University School of MedicineGangnam-guSeoul06351Korea Precision Medicine Research Institute Samsung Medical CenterGangnam-guSeoul06351Korea Department of Biomedical Convergence Science and Technology Kyungpook National UniversityDaegu41566Korea Department of Pathology and Translational Genomics Samsung Medical CenterSungkyunkwan University School of MedicineSeoul06351Korea Department of Surgery Samsung Medical CenterSungkyunkwan University School of MedicineGangnam-guSeoul06351Korea

Background:Although bevacizumab is an important treatment for metastatic colorectal cancer(CRC),not allpatients with CRC benefit from it;in unselected patient populations,only modest survival benefits have been ***:We evaluated clinical outcomes in 110 patients using comprehensive molecular characterization to identifybiomarkers for a response to bevacizumab-containing *** molecular analysis comprised whole-exomesequencing,ribonucleic acid sequencing,and a methylation array on patient ***:Genomic and molecularcharacterization was successfully conducted in 103 *** of 103 CRC samples were hypermutated,and none ofthe non-hypermutant tumors were microsatellite *** those 103 patients,89 had adenocarcinoma(ADC),15 were diagnosed with mucinous ADC,and six had signet-ring cell carcinoma(SRCC).Consensus molecular subtype(CMS)2 was unique to *** the four SRCCs,two were CMS1,one was CMS4,and the other was *** status was a significantly enriched factor in responders to bevacizumab *** growth factorreceptor(FGFR)1/2 signaling was upregulated in non-responders,whereas cell cycle,transfer ribonucleic acidprocessing,nucleotide excision repair,and oxidative phosphorylation pathways were enriched in ***,IGF1 was differentially expressed in non-responders(log2 fold change=−1.43,p=4.11×10^(−5),falsediscovery rate=0.098),and FLT1 was highly methylated in non-responders(p=7.55×10^(−3)).When the molecularpathways were reanalyzed separately according to the backbone chemotherapy(FOLFOX ***),thesignificance of the molecular pathways varied according to the backbone ***:This studysought a subset of CRC patients with a distinct clinical response to chemotherapy containing *** need to be validated in a large group of homogenous patient cohort and examined according to the differentchemotherapy backbones to create personalized therapeutic oppor

关键词： Bevacizumab Whole-exome sequencing Ribonucleic acid sequencing Methylation array Colorectal cancer

Diagnosis of gastric epithelial neoplasia:Dilemma for Korean pathologists

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World Journal of Gastroenterology 2011年第21期17卷 2602-2610页

作者： Joon mee kim mee-Yon Cho Jin Hee Sohn Dae Young Kang Cheol Keun Park Woo Ho kim So-Young Jin kyoung mee kim Hee Kyung Chang Eunsil Yu Eun Sun Jung mee Soo Chang Jong Eun Joo mee Joo Youn Wha kim Do Youn Park Yun Kyung Kang Sun Hoo Park Hye Seung Han Young Bae kim Ho Sung Park Yang Seok Chae Kye Won Kwon Hee Jin Chang The Gastrointestinal Pathology Study Group of Korean Society of Pathologists Department of Pathology Inha University Hospital Department of Pathology Yonsei University Wonju College of Medicine Wonju Christian Hospital Department of Pathology Sungkyunkwan University School of MedicineKangbuk Samsung Medical Center Department of Pathology Chungnam National University College of Medicine Department of Pathology Sungkyunkwan University School of MedicineSamsung Medical Center Department of Pathology Seoul National University College of Medicine Department of Pathology Soonchunhyang University Hospital Department of Pathology Kosin University College of Medicine Department of Pathology University of Ulsan College of MedicineAsan Medical Center Department of Pathology The Catholic University of KoreaSeoul St.Mary's Hospital Department of Pathology Seoul National University Boramae Hospital Department of Pathology Eulji General Hospital Department of Pathology Inje University Ilsan Paik Hospital Department of Pathology Kyunghee University College of Medicine Department of Pathology Pusan National University College of Medicine Department of Pathology Inje University Seoul Paik Hospital Department of Pathology Korea Cancer Center Hospital Department of Pathology Konkuk University Medical Center Department of Pathology Ajou University School of Medicine Department of Pathology Chonbuk National University Medical School Department of Pathology Korea University College of Medicine Department of Pathology Bundang Jesaeng Hospital Department of Pathology National Cancer Center The Korean Society of Pathologists 4FThe Korean Medical Association BuildingSeoul 140-721South Korea

The histopathological diagnosis of gastric mucosal biopsy and endoscopic mucosal resection/endoscopic submucosal dissection specimens is important,but the diagnostic criteria,terminology,and grading system are not the same in the East and West.A structurally invasive focus is necessary to diagnose carcinoma for most Western pathologists,but Japanese pathologists make a diagnosis of cancer based on severe dysplastic cytologic atypia irrespective of the presence of *** the Vienna classification was introduced to reduce diagnostic discrepancies,it has been difficult to adopt due to different concepts for gastric epithelial neoplastic *** pathologists experience much difficulty making a diagnosis because we are influenced by Japanese pathologists as well as Western *** is geographically close to Korea,and academic exchanges are ***,Korean doctors are familiar with Western style medical *** a result,the terminology,definitions,and diagnostic criteria for gastric intraepithelial neoplasia are very heterogeneous in *** solve this problem,the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists has made an effort and has suggested guidelines for differential diagnosis:(1) a diagnosis of carcinoma is based on invasion;(2) the most important characteristic of low grade dysplasia is the architectural pattern such as regular distribution of crypts without severe branching,budding,or marked glandular crowding;(3) if nuclear pseudostratification occupies more than the basal half of the cryptal cells in three or more adjacent crypts,the lesion is considered high grade dysplasia;(4) if severe cytologic atypia is present,careful inspection for invasive foci is necessary,because the risk for invasion is very high;and(5) other structural or nuclear atypia should be evaluated to make a final decision such as cribriform pattern,papillae,ridges,vesicular nuclei,high nuclear/cytoplasmic ratio,loss

关键词： Intraepithelial neoplasia Stomach Dysplasia Adenoma Carcinoma Japanese Western Consensus Vienna

Tumor Response to Temsirolimus for Epithelioid Angiomyolipoma and Novel Mutation of <i>SMARCB1/INI1</i>Tumor Suppressor Gene

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Journal of Cancer Therapy 2014年第13期5卷 1215-1222页

作者： Jung Yong Hong Jeeyun Lee kyoung-mee kim Sung Joo kim Department of Internal Medicine Chung-Ang University College of Medicine Seoul South Korea Department of Medicine Division of Hematology-Oncology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul South Korea Department of Pathology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul South Korea Department of Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul South Korea

Epithelioid angiomyolipoma (EAML) is a rare morphologic variant of classic angiomyolipoma (AML), showing potentially malignant phenotype. AML is a benign mesenchymal tumor, which shows frequent inactivating mutations of?TSC1 (encodes harmartin) or?TSC2 (encodes tuberin) genes. Disruption of harmatin-tuberin complex and subsequent inappropriate activation of mTOR pathway is a distinct feature of AML. Thus, mTOR pathway inhibitors have shown significant clinical response in AML. Compared to the great success of mTOR inhibitors in AML, there is no standard therapy for EAML yet. Here, we present a patient with EAML who responded well to mTOR inhibitor (temsirolimus) but suffered rapid disease progression after cessation of temsirolimus. In addition, we performed Cancer Hotspot Panel (Ion AmpliSeqTM) analysis to identify novel tumorigenic properties of EAML. Of note, Cancer Hotspot Panel analysis revealed novel missense mutation in?SMARCB1 (c.1119-41G > A) tumor suppressor gene and subsequent immunohistochemistry analysis also revealed weak and partial losses ofSMARCB1/INI1 protein in nuclei of tumor cells. In this study, we suggest that mTOR inhibitors also can be effective against EAML. However, the long-term efficacy of mTOR inhibitors in EAML needs to be supported in further studies. Furthermore, we speculate that the newly found missense mutation ofSMARCB1/INI1 gene can be the possible novel tumorigenic properties of EAML and highlights the possibility of further novel targeted therapy beyond mTOR inhibitors in EAML.

关键词： Epithelioid Angiomyolipoma Temsirolimus SMARCB1/INI1

Ag-GST/HfO_(x)-based unidirectional threshold switching selector with low leakage current and threshold voltage distribution for high-density cross-point arrays

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Rare Metals 2024年第1期43卷 280-288页

作者： kyoung-Joung Yoo Dae-Yun Kang Nahyun kim Ho-Jin Lee Ta-Hyeong kim Taeho kim Tae Geun kim School of Electrical Engineering Korea UniversitySeoul 02841Republic of Korea

The use of electrochemical-metallization-based volatile threshold switching selectors in cross-point arrays has been widely explored owing to their high on-off ratios and simple ***,these devices are unsuitable for cross-point architectures because of the difficulty in controlling the random filament formation that results in large fluctuations in the threshold voltage during *** this study,we investigated the unidirectional threshold transition characteristics associated with an Ag/GST/HfO_(x)/Pt-based bilayer selector and demonstrated the occurrence of a low leakage current(<1×10^(-11) A) and low distribution of the threshold voltage(Δ0.11 V).The bilayer structure could control the filament formation in the intermediate state through the insertion of an HfO_(x) tunneling *** stacking a bilayer selector with NiO_(x)based resistive random-access memory,the leakage and programming currents of the device could be significantly *** the crossbar array configuration,we performed equivalent circuit analysis of a one-selector oneresistor(1S1R) devices and estimated the optimal array size to demonstrate the applicability of the proposed *** maximum acceptable crossbar array size of the 1S1R device with the Ag/GST/HfO_(x)/Pt/Ti/NiO_(x)/Pt structure was 5.29×10^(14)(N^(2),N=2.3×10^(7)).

关键词： Selector device Tunneling barrier Threshold switching Sputtering 1S1R Cross-point array

Clinical outcomes of radiation therapy for early-stage gastric mucosa-associated lymphoid tissue lymphoma

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World Journal of Gastroenterology 2013年第36期19卷 6062-6068页

作者： Sang-Won kim Do Hoon Lim Yong Chan Ahn Won Seog kim Seok Jin kim Young Hyeh Ko kyoung-mee kim Department of Radiation Oncology Samsung Medical Center Sungkyunkwan University School of Medicine Division of Hematology and Oncology Department of Medicine Samsung Medical CenterSungkyunkwan University School of Medicine Department of Pathology Samsung Medical Center Sungkyunkwan University School of Medicine

AIM:To evaluate the clinical outcomes of radiation therapy(RT)for early-stage gastric mucosa-associated lymphoid tissue lymphoma(MALToma).METHODS:The records of 64 patients treated between 1998 and 2011 were analyzed *** Helicobacter pylori(***)-positive patients(n=31),chemotherapy or *** eradication therapy was the initial *** patients with failure after *** eradication,RT was *** *** patients(n=33),chemotherapy or RT was the first-line *** median RT dose was *** target volume included the entire stomach andthe perigastric lymph node ***:All of the patients completed RT without interruption and showed complete remission on endoscopic biopsy after *** a median follow-up period of 39 mo,the 5-year local control rate was 89%.Salvage therapy was successful in all relapsed *** malignancies developed in three *** 5-year overall survival rate was 94%.No patient presented symptoms of moderate-to-severe treatmentrelated toxicities during or after ***:Radiotherapy results in favorable clinical outcomes in patients with early-stage gastric MALToma who experience failure of *** eradication therapy and those who are *** negative.

关键词： Gastric mucosa-associated lymphoid tissue lymphoma Radiation therapy Treatment response

Effect of Meteorological Data Assimilation on Regional Air Quality Forecasts over the Korean Peninsula

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Journal of Meteorological Research 2024年第2期38卷 262-284页

作者： Yunjae CHO Hyun mee kim Eun-Gyeong YANG Yonghee LEE Jae-Bum LEE Soyoung HA Department of Atmospheric Sciences Yonsei UniversitySeoul 03722Republic of Korea Air Quality Forecasting Center National Institute of Environmental ResearchIncheon 22689Republic of Korea National Center for Atmospheric Research BoulderCO 80305USA University of Maryland Baltimore County BaltimoreMD 21250USA Global Modeling and Assimilation Office NASA Goddard Space Flight CenterGreenbeltMD 20771USA

The Weather Research and Forecasting model coupled with Chemistry(WRF-Chem),a type of online coupled chemistry-meteorology model(CCMM),considers the interaction between air quality and meteorology to improve air quality *** data assimilation(DA)can be used to reduce uncertainty in meteorological field,which is one factor causing prediction uncertainty in the *** this study,WRF-Chem and three-dimensional variational DA were used to examine the impact of meteorological DA on air quality and meteorological forecasts over the Korean *** nesting model domains were configured over East Asia(outer domain)and the Korean Peninsula(inner domain).Three experiments were conducted by using different DA domains to determine the optimal model domain for the meteorological *** the meteorological DA was performed in the outer domain or both the outer and inner domains,the root-mean-square error(RMSE),bias of the predicted particulate matter(PM)concentrations,and the RMSE of predicted meteorological variables against the observations were smaller than those in the experiment where the meteorological DA was performed only in the inner *** indicates that the improvement of the synoptic meteorological fields by DA in the outer domain enhanced the meteorological initial and boundary conditions for the inner domain,subsequently improving air quality and meteorological *** to the experiment without meteorological DA,the RMSE and bias of the meteorological and PM variables were smaller in the experiments with *** effect of meteorological DA on the improvement of PM predictions lasted for approximately 58-66 h,depending on the ***,the uncertainty reduction in the meteorological initial condition by the meteorological DA contributed to a reduction of the forecast errors of both meteorology and air quality.

关键词： meteorological data assimilation regional air quality forecast particulate matter concentration optimal model domain forecast error WRF-Chem

Production of chitosan-based composite film reinforced with lignin-rich lignocellulose nanofibers from rice husk

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Journal of Bioresources and Bioproducts 2024年第2期9卷 174-184页

作者： Hye Jee Kang Yeon Ju Lee Jin kyoung Lee Irnia Nurika Sri Suhartini Deokyeong Choe Dong Hyun kim Hoon Choi Natasha P.Murphy Ho Yong kim Young Hoon Jung School of Food Science and Biotechnology Kyungpook National UniversityDaegu 41566Republic of Korea CPR S&T Co. Ltd.Gunpo 15880Republic of Korea Department of Agroindustrial Technology Faculty of Agricultural TechnologyUniversitas BrawijayaMalang 65145Indonesia Renewable Resources and Enabling Sciences Center National Renewable Energy LaboratoryGoldenCO 80401United States Center for Bio-based Chemistry Korea Research Institute of Chemical TechnologyUlsan 44429Republic of Korea

Lignocellulosic nanofibers(LCNFs),implying lignin-containing cellulose fibers,maintain the prop-erties of both lignin and cellulose,which are hydrophobic and hydrophilic,*** pres-ence of hydrophobic lignin in LCNFs is expected to be an economical and attractive option that can improve the thermal and mechanical properties of ***,this study was conducted to produce lignin-rich LCNFs from sugar-rich waste obtained from rice husks after acidic *** LCNFs were produced from the lignin-rich solid fractions obtained after pretreatment and enzymatic hydrolysis,which were then incorporated as an additive into a chitosan-based *** variations in lignin content in the range of approximately 50.6%-66.8%in differently obtained LCNFs gave significantly different optical strengths and mechanical *** controllable processes may allow for customized film ***,the glucose-rich liquid fractions obtained after pretreatment and enzymatic hydrolysis were used as a substrate for ethanol fermentation to achieve total utilization of rice husk biomass *** conclusion,the lignin-rich biomass fraction holds promise as a suitable material for chitosan-LCNF film and has the potential to increase the economic feasibility of the biomaterial industry.

关键词： Rice husk Lignocellulose nanofiber Lignin-based material Chitosan film Upcycling

Surgical Repair of Ventricular Septal Defect in Neonates: Indications and Outcomes

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Congenital Heart Disease 2024年第1期19卷 69-83页

作者： Jae Hong Lee Sungkyu Cho Jae Gun Kwak Hye Won Kwon Woong-Han kim Mi kyoung Song Sang-Yun Lee Gi Beom kim Eun Jung Bae Department of Thoracic and Cardiovascular Surgery Research Institute for Convergence of Biomedical Science and TechnologyPusan National University Yangsan HospitalYangsanKorea Department of Thoracic and Cardiovascular Surgery Seoul National University Children’s HospitalSeoulKorea Department of Pediatrics Seoul National University Children’s HospitalSeoulKorea

Background:The optimal surgical timing and clinical outcomes of ventricular septal defect(VSD)closure in neo-nates remain *** aimed to evaluate the clinical outcomes of VSD closure in neonates(age≤30 days).Methods:We retrospectively reviewed 50 consecutive neonates who underwent VSD closure for isolated VSDs between August 2003 and June *** for the procedure included congestive heart failure/failure to thrive and pulmonary *** adverse events(MAEs)were deﬁned as the composite of all-cause mortality,reoperation,persistent atrioventricular block,and signiﬁcant(≥grade 2)valvular ***:The median age and body weight at operation were 26.0 days(interquartile range[IQR],18.8–28.3)and 3.7 kg(IQR,3.3–4.2),*** median follow-up duration was 110.4 months(IQR,56.8–165.0).Seven patients required preoperative respiratory support,andﬁve had signiﬁcant(≥grade 2)preoperative valvular *** early mortality occurred due to irreversible cardiogenic shock;no late mortality was *** reopera-tion was due to hemodynamically signiﬁcant residual VSD at 103.8 months *** overall survival,freedom from reoperation,and freedom from MAE at 15-years were 98.0%,96.3%,and 94.4%,***-operative mechanical ventilation was associated with a longer duration of postoperative mechanical ventilation(p<0.001)and a longer length of intensive care unit stay(p<0.001).Conclusions:VSD closure with favorable outcomes without morbidities is feasible even in ***,neonates requiring preoperative respiratory support may require careful postoperative management considering the long-term postoperative ***,surgical VSD closure might be indicated earlier in neonates with respiratory compromise.

关键词： Ventricular septal defect neonate early surgery neonatal surgery