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Pretransplantation fetal-maternal microchimerism in pediatric liver transplantation from mother

World Journal of Gastroenterology 2017年第45期23卷 8017-8026页

作者： Nam-Joon Yi Min-Su Park Eun Young Song hye Young ahn Jeik Byun hyeyoung Kim Suk Kyun Hong Kyungchul Yoon Hyo-Sin Kim Sung-Woo ahn Hae Won Lee Young Rok Choi Kwang-Woong Lee Kyung-Suk Suh Myoung Hee Park Department of Surgery Seoul National University College of Medicine Department of Surgery Kyung Hee University School of Medicine Department of Laboratory Medicine Seoul National University College of Medicine Korea Organ Donation Agency Laboratory

AIM To investigate the rates of pretransplantation fetalmaternal microchimerism(MC) and its effect on rejection in children receiving maternal liver grafts. METHODS DNA or blood samples before liver transplantation(LT) were available in 45 pediatric patients and their mothers. The presence of pretransplantation MC to non-inherited maternal antigens(NIMAs)(NIMA-MC) in the peripheral blood was tested using nested PCRsingle-strand conformation polymorphism analysis for the human leukocyte antigen(HLA)-DRB1 alleles. NIMA-MC was successfully evaluated in 26 of the 45 children. Among these 45 pediatric LT recipients,23 children(51.1%) received transplants from maternal donors and the other 22 from non-maternal *** Among these 26 children,pretransplantation NIMAMC was detected in 23.1%(n = 6),6.1(range,0.8-14) years after birth. Among the children with a maternal donor,the rate of biopsy-proven cellular rejection(BPCR) was 0% in patients with NIMA-MC positivity(0/3) and those with HLA-DR identity with the mother(0/4),but it was 50% in those with NIMA-MC negativity(5/10). Patients with NIMA-MC positivity or HLA-DR identity with the mother showed significantly lower BPCR rate compared with NIMA-MC-negative patients(0% vs 50%,P = 0.04). NIMA-MC-positive patients tended to show lower BPCR rate compared with NIMAMC-negative patients(P = 0.23). CONCLUSION The presence of pretransplantation NIMA-MC or HLADR identity with the mother could be associated with BPCR-free survival in pediatric recipients of LT from maternal donors.

关键词： Liver transplantation Microchimerism Maternal graft Graft survival Non-inherited maternal antigen Biopsy-proven cellular rejection

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Medial Patella Subluxation after Minor Trauma

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Open Journal of Orthopedics 2017年第10期7卷 295-300页

作者： Seung Hyun Hwang Chang Hyun Nam Kyung Won Choi hye Sun ahn Joint & Arthritis Research Department of Orthopaedic Surgery Himchan Hospital Seoul Korea

Most cases of medial patella subluxation occur under iatrogenic conditions that are often associated with a prior excessive lateral retinacular release procedure. We report a case of medial subluxation following minor trauma with no history of previous lateral release. The abnormality was identified on magnetic resonance imaging and was successfully treated by direct repair of the lateral retinaculum. The recognition and treatment of medial subluxation of the patella without retinacular release can be difficult. Therefore, consideration of multiple causes through careful medical history taking, physical examination, and radiologic examination is needed for accurate diagnosis.

关键词： Medial Patella Subluxation Arthroscopy Lateral Retinacular Ligament Reconstruction

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Comparison of Clinical Results in Deep Vein Thrombosis of Total Knee Arthroplasty with Rivaroxaban and Dalteparin Sodium

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Open Journal of Orthopedics 2015年第2期5卷 17-24页

作者： Su Chan Lee Chang Hyun Nam hye Sun ahn Seung Hyun Hwang Nong Kyum ahn Ha Young Park Joint & Arthritis Research Department of Orthopaedic Surgery Himchan Hospital Seoul Korea

This study was intended to investigate into the incidence rates of deep vein thrombosis (DVT) in patients who used prophylactic antithrombotic medications after total knee arthroplasty (TKA), and to compare clinical results in groups treated with Rivaroxaban versus Dalteparin sodium as prophylactic antithrombotic medications. This prospective study was performed in 300 patients who underwent TKA between November 2011 and December 2012. The prophylactic therapy was given to 150 patients in Rivaroxaban group and Dalteparin sodium group, respectively. In addition, intermittent compression pump and stocking were used in all the groups immediately after TKA. In order to determine the incidence of DVT, color Doppler ultrasonography, D-dimer, and clinical symptom examination were conducted. There were 17 cases (11.3%) of DVT in Rivaroxaban group and 18 cases (12.0%) of DVT in Dalteparin sodium group after TKA, and no significant difference was seen between both groups. Between patients with DVT and those without DVT after TKA at 4 days in both groups, there was a significant difference in the swelling indices. Moreover, a significant difference was observed in the evaluation of bruise. The early signs of DVT after TKA are unknown, however, some initial clinical signs such as swelling have been observed. After using the said prophylactic drugs, the lower incidence of DVT was seen, and there was no difference between the types of drugs. Pharmacological therapy (either Rivaroxaban or Dalteparin sodium) after TKA is considered effective for DVT prevention. There is also a need to consider constant monitoring of clinical symptoms.

关键词： Deep Vein Thrombosis Total Knee Arthroplasty Rivaroxaban Dalteparin Sodium

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The effects of EMLA cream on pain responses of preschoolers

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Open Journal of Nursing 2013年第8期3卷 1-4页

作者： Se Na ahn Joohyun Lee Hae Won Kim Sook Bin Im Byung Sun Cho hye Young ahn College of Nursing Eulji University Daejeon South Korea Department of Nursing Eulji University Hospital Daejeon South Korea Department. of Surgery College of Medicine Eulji University Daejeon South Korea The Research Institute of Nursing Science College of Nursing Seoul National University Seoul South Korea

The aim of present study was to assess the effects of a eutectic mixture of topical anesthetics (EMLA cream) on pain responses of preschoolers during venipuncture. The pain responses were reported by children, nurses, and the children’s mothers. The pre- and post-test-designed study, which included a non-equivalent control group, was carried out in a pediatric unit at E University Hospital in South Korea. Pain responses during venipuncture were measured by the self-reporting of the children using the Face Pain Rating Scale (FPRS), the Procedure Behavior Checklist by nurses (PBCL), the Visual Analog Scale (VAS) by mothers, in addition to measurements of the children’s pulse rate and level of oxygen saturation. EMLA cream was effective in decreasing the pain responses of the children as assessed by FPRS, PBCL, and VAS scores. However, pulse rate and level of oxygen saturation of the children during venipuncture were not significantly different between the two groups. EMLA cream could be a useful option for reducing pain in preschool children during invasive procedures.

关键词： Venipuncture EMLA Cream Pain Preschooler

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Prevalence of nonalcoholic fatty liver disease in pediatrics and adolescents:a systematic review and meta-analysis

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World Journal of Pediatrics 2024年第6期20卷 569-580页

作者： Eun Joo Lee Miyoung Choi Sang Bong ahn Jeong-Ju Yoo Seong Hee Kang Yuri Cho Do Seon Song Hong Koh Dae Won Jeon hye Won Lee Department of Pediatrics Yonsei University College of MedicineSeoulKorea Clinical Evidence Research National Evidence-Based Healthcare Collaborating Agency(NECA)SeoulKorea Department of Internal Medicine Nowon Eulji Medical CenterEulji University College of MedicineSeoulKorea Department of Internal Medicine Soonchunhyang University Bucheon HospitalBucheonKorea Department of Internal Medicine Sangkye Paek HospitalInje University College of MedicineSeoulKorea Center for Liver and Pancreatobiliary Cancer National Cancer CenterGoyangKorea Department of Internal Medicine College of MedicineSt.Vincent's HospitalThe Catholic University of KoreaSuwonKorea Department of Internal Medicine Hanyang University College of MedicineSeoulKorea Department of Internal Medicine Yonsei University College of MedicineSeoulKorea

Background As childhood obesity escalates worldwide,the prevalence of nonalcoholic fatty liver disease(NAFLD)in pediatric and adolescent populations is also ***,systematic studies and meta-analyses evaluating the prevalence of pediatric NAFLD remain *** The MEDLINE,Korean Medical Database(KMBASE),Embase,Global Health,and Cochrane Library databases were searched from January 1997 to April *** terms included NAFLD or steatosis;nonalcoholic or steatohepatitis;child(ren),adolescent,or teenager;and prevalence,incidence,or epidemiology.A random-effects meta-analysis model was used to estimate the prevalence of pediatric *** A total of 2116 publications were found,of which 62 were included in the *** them,27 reported the prevalence in the general population and 39 in the obese *** worldwide pooled prevalence of pediatric NAFLD was 13%[95%confidence interval(CI)9-18%]in the general population and 47%(95%CI 41%–53%)in the obese *** 16 studies in the general population and 18 in the obese population,NAFLD prevalence varied by *** the general population,the prevalence of NAFLD was 15%(95%CI 8%–23%)in males and 10%(95%CI 6%–15%)in *** the obese population,it was 54%(95%CI 46%–61%)in males and 39%(95%CI 30%–49%)in *** The global prevalence of pediatric NAFLD is rising in both the general and obese *** the increasing rates of childhood obesity,epidemiological studies on the prevalence and incidence of NAFLD are needed.

关键词： Meta-analysis Nonalcoholic fatty liver disease Pediatric Prevalence

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韩国标签印刷行业发展趋势分析

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标签技术 2011年第1期01卷 16-17页

作者： hye—Jeong ahn 韩国《GRAPHICS WORLD》

目前，韩国从事标签印刷的企业共计2500多家，有65％的标签印刷企业位于首尔地区，35％的企业分布在首尔以外的地区，如图1所示。

关键词：标签印刷发展趋势印刷行业韩国印刷企业首尔

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Cancer-associated fibroblast-derived secreted phosphoprotein 1 contributes to resistance of hepatocellular carcinoma to sorafenib and lenvatinib

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Cancer Communications 2023年第4期43卷 455-479页

作者： JungWoo Eun Jung Hwan Yoon hye Ri ahn Seokhwi Kim Young Bae Kim Su Bin Lim Won Park TaeWook Kang Geum Ok Baek Moon Gyeong Yoon Ju A Son Ji HyangWeon Soon Sun Kim Hyo Jung Cho Jae Youn Cheong Department of Gastroenterology Ajou University School of MedicineSuwonSouth Korea Department of Pathology College of MedicineThe Catholic University of KoreaSeoulSouth Korea Department of Biomedical Sciences AjouUniversity Graduate School of MedicineSuwonSouth Korea Department of Pathology Ajou University School of MedicineSuwonSouth Korea Department of Biochemistry&Molecular Biology Ajou University School of MedicineSuwonSouth Korea The Moagen IncDaejeonSouth Korea

Background:Cancer-associated fibroblasts(CAFs)play an important role in the induction of *** study aimed to clarify the mechanism underlying CAF-mediated resistance to two tyrosine kinase inhibitors(TKIs),sorafenib and lenvatinib,and to identify a novel therapeutic target for overcoming TKI resistance in hepatocellular carcinoma(HCC).Methods:We performed a systematic integrative analysis of publicly available gene expression datasets and whole-transcriptome sequencing data from 9 pairs of CAFs and para-cancer fibroblasts isolated from human HCC and para-tumor tissues,respectively,to identify key molecules that might induce resistance to *** then performed in vitro and in vivo experiments to validate selected targets and related *** associations of plasma secreted phosphoprotein 1(SPP1)expression levels before sorafenib/lenvatinib treatment with progression-free survival(PFS)and overall survival(OS)of 54 patients with advanced HCC were evaluated using Kaplan-Meier and Cox regression ***:Bioinformatic analysis identified CAF-derived SPP1 as a candidate molecule driving TKI ***1 inhibitors reversed CAF-induced TKI resistance in vitro and in ***-derived SPP1 activated rapidly accelerated fibrosarcoma(RAF)/mitogen-activated protein kinase(MAPK)and phosphatidylinositol 3-kinase(PI3K)/protein kinase B(AKT)/mammalian target of rapamycin(mTOR)through the integrin-protein kinase C-alpha(PKCα)signaling pathway and promoted epithelial-to-mesenchymal transition(EMT).A high plasma SPP1 level before TKI treatment was identified as an independent predictor of poor PFS(P=0.026)and OS(P=0.047)in patients with advanced HCC after TKI ***:CAF-derived SPP1 enhances TKI resistance in HCC via bypass activation of oncogenic signals and EMT *** inhibition represents a promising therapeutic strategy against TKI resistance ***,plasma SPP1 level before TKI treatment represents a potential biomar

关键词： drug resistance epithelial-to-mesenchymal transition hepatocellular carcinoma secreted phosphoprotein 1

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Transparent high-performance piezoceramics through pressureless sintering

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Journal of Advanced Ceramics 2024年第5期13卷 561-567页

作者： hye-Lim Yu Woo-Seok Kang Ju-hyeon Lee Temesgen Tadeyos Zate Young-Jin Lee Bo-Kun Koo Dong-Jin Shin Min-Soo Kim Soon-Jong Jeong Young Ghyu ahn Wook Jo Department of Material Science and Engineering Ulsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Energy Conversion Research Center Korea Electrotechnology Research InstituteChangwon 51543Republic of Korea MLCC Development Team Component Biz.UnitSamsung Electro-Mechanics Co.Ltd.Suwon 16674Republic of Korea

Piezoelectricity offers an electromechanical coupling that is widely utilized in transducer *** has been a consistent demand for transparent piezoelectric materials for optoelectrical ***,despite the inherent tradeoff between the transparency and the piezoelectricity,numerous strategies have been explored to develop the transparent piezoelectric ***,the most transparent piezoelectric materials developed to date is either a single crystal or materials that achieve transparency via hot-press sintering,limiting its industrial ***,we introduce a novel piezoelectric material that ensures transparency through co-doping and pressureless sintering of polycrystalline *** this study,we employed a compositional optimization approach to enhance the synergistic effect between the transparency and the piezoelectric properties of 0.71Pb(Mg_(1/3)Nb_(2/3))O_(3)–0.29PbTiO_(3)(PMN–0.29PT)*** utilizing the tape casting process for mass production and large-area manufacturing,our Pb_(0.913)La_(0.0145)Sm_(0.0145)(Mg_(1/3)Nb_(2/3))_(0.71)Ti_(0.29)O_(3)(TP2.9)ceramics exhibited over 60%transparency and large piezoelectric coefficient(d33)of 1104 pC/*** material holds considerable promise for a wide range of industrial applications in both the optical and electronic domains.

关键词： piezoelectric ceramics transparency pressureless sintering co-doping tape casting

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Mucoid Degeneration of Posterior Cruciate Ligament Leads to Roof Impingement with Anterior Cruciate Ligament: Case Report

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Open Journal of Orthopedics 2018年第2期8卷 46-50页

作者： Su Chan Lee Kyung Won Choi Chang Hyun Nam Seung Hyun Hwang hye Sun ahn Joint & Arthritis Research Department of Orthopaedic Surgery Himchan Hospital Seoul Korea

Mucoid degeneration of cruciate ligament is rare cause of knee pain, however there are some cases causing pain and restriction of extension. A 60-year-old man came to our clinic complaining of pain in knee joint on full range of extension about 3 months ago. The range of motion (ROM) was a flexion contracture of 5 degree and a further flexion of 140 degree with pain aggravation by forced extension. Magnetic resonance imaging of the knee joint showed thickened posterior cruciate ligament (PCL) mucoid degeneration. Arthroscopic treatment consists of PCL reduction-plasty by debridement of yellowish material in the PCL fiber and reduces the volume of the hypertrophied PCL. Immediately after surgery, patient gain the full ROM without any symptom of impingement. Enlarged PCL can make impingement in femoral notch with anterior cruciate ligament (ACL). Then, Partial debulking surgery of PCL is an effective treatment to pain relief and restore ROM of knee.

关键词： Mucoid Degeneration Roof Impingement Posterior Cruciate Ligament Anterior Cruciate Ligament

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Treatment of Bone Defect with Modular Metal Augmentation Using a Downsized Block in Total Knee Arthroplasty: Technical Note and Report of 17 Cases

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Open Journal of Orthopedics 2016年第9期6卷 268-275页

作者： Su Chan Lee Chang Hyun Nam Seung Hyun Hwang Ji-Hoon Baek Soon Yong Yoo hye Sun ahn Joint & Arthritis Research Department of Orthopaedic Surgery Himchan Hospital Seoul Korea

In total knee arthroplasty (TKA), a treatment of bone defect varies depending on the location and extent of defect and requires proper surgical procedure. Metal augmentation is readily available for both femoral and tibial bone defects. We report the operative technique of modular metal augmentation using a downsized block for ambiguous proximal tibial and distal femoral bone defects in primary and revision TKA. Regarding bone defects, bone loss can be minimized by using a different size of metal augmentation, and suitable reinforcement for bone defects can be achieved. Once our technique is properly used, it will be very helpful in treating bone defects.

关键词： Total Knee Arthroplasty Bone Defect Metal Augmentation

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