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Endoscopic retrograde cholangiopancreatography in pancreatic and biliary tract disease in Korean children

World Journal of Gastroenterology 2010年第4期16卷 490-495页

作者： Joo Young Jang Chong Hyun Yoon kyung mo kim Department of Pediatrics Asan Medical Center Children's HospitalUniversity of Ulsan College of MedicineSeoul 138-736South Korea Department of Pediatrics Ajou University School of MedicineSuwon 443-721South Korea Department of Pediatric Radiology Asan Medical Center Children's HospitalUniversity of Ulsan College of MedicineSeoul 138-736South Korea Department of Pediatrics Asan Medical Center Children’s HospitalUniversity of Ulsan College of MedicineSeoul 138-736South Korea

AIM:To assess the indications,findings,therapeutic procedures,safety,and complications of endoscopic retrograde cholangiopancreatography(ERCP) performed in Korean ***:The demographic characteristics,indications for ERCP,findings,therapeutic procedures,and complications of 122 pediatric patients who underwent 245 ERCPs in the Asan Medical Center between June 1994 and March 2008 were ***:The mean age of the 122 patients was 8.0 ± 4.2 *** were biliary pathology in 78(64.0%),pancreatic pathology in 43(35.2%),and chronic abdominal pain in *** indications included choledochal cysts in 40,choledocholithiasis in 24,suspected sclerosing cholangitis in 8,trauma in 2,and other conditions in *** indications includedacute pancreatitis in 7,acute recurrent pancreatitis in 11,chronic pancreatitis in 20,trauma in 3,and pancreatic mass in *** the 245 ERCPs,success rate was 98.4% and 190(77.6%) were for therapeutic purposes,including endoscopic nasal drainage(51.8%),biliary sphincterotomy(38.0%),pancreatic sphincterotomy(23.3%),stent insertion(15.1%),stone extraction(18.8%),and balloon dilatation(11.0%).Complications were postERCP pancreatitis in 16(6.5%),ileus in 23(9.4%),hemorrhage in 2(0.8%),perforation in 2(0.8%),sepsis in 1(0.4%),and impacted basket in 1(0.4%).There were no procedure-related deaths,and most complications improved under supportive ***:This study showed that there is a high incidence of choledochal cyst and diagnostic and therapeutic ERCP for the management of various biliary and pancreatic diseases was safe and effective in Korean children.

关键词： Endoscopic retrograde cholangiopancreatography Pancreatic diseases Biliary tract diseases Choledochal cyst Pancreatitis Pediatrics

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Metal stents placement for refractory pancreatic duct stricture in children

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World Journal of Gastroenterology 2018年第3期24卷 408-414页

作者： In Sook Jeong Sung Hee Lee Seak Hee Oh Do Hyun Park kyung mo kim Department of Pediatrics University of Ulsan College of MedicineAsan Medical Center Children’s Hospital Department of Internal Medicine University of Ulsan College of MedicineAsan Medical Center

AIM To evaluate the use of fully covered self-expandable metal stents(FCSEMSs) for pancreatic duct strictures in children with chronic *** Eight patients with refractory benign dominant stricture of the main pancreatic duct(MPD) were enrolled through chart reviews between December 2014 and June 2017 in a single center. Endoscopic retrograde cholangiopancreatography(ERCP) with placement of a 6-mm FCSEMS with dual flaps was performed. Endoscopic removal of FCSEMSs was performed with a snare or rat-tooth forceps. All procedures were performed by a pediatric gastroenterologist. For the assessment of outcomes, technical and clinical success, adverse events, and stent patency were evaluated *** The placement and removal of the FCSEMSs were successful in all 8 patients. Five patients were boys and 3 were girls. The median age at initial FCSEMS placement was 12 years(range, 5-18 years). The diameters of all the inserted stents were 6 mm, and the lengths were 4-7 cm. The median indwelling time was 6 mo(range, 3-10 mo). No pancreatic sepsis, pancreatitis, cholestasis, or mortality occurred. There was no proximal and distal migration. All subjects showed a patent stent. On follow-up ERCP, the mean diameter of the stricture improved from 1.1 mm to 2.8 mm(P < 0.05), whereas that of upstream dilation improved from 8.4 mm to 6.3 mm(P < 0.05).CONCLUSION This initial experience showed that temporary FCSEMS placement is feasible and safe for the management of refractory benign MPD stricture in children.

关键词： Chronic pancreatitis Pancreatic duct Selfexpandable metal stent Child Endoscopic retrograde cholangiopancreatography

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Ssu72 is a T-cell receptor-responsive modifier that is indispensable for regulatory T cells

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Cellular & molecular Immunology 2021年第6期18卷 1395-1411页

作者： Jin-Kwan Lee Seo-Young Koo Hye-Mi Nam Jee-Boong Lee Jiwon Ko kyung-mo kim Eun-Ji Park Tae Jin kim Ho Lee Heounjeong Go Chang-Woo Lee Research Institute Curogen TechnologySuwonSouth Korea Department of molecular Cell Biology Samsung Medical CenterSungkyunkwan University School of MedicineSuwonSouth Korea moGAM Institute for Biomedical Research GyeonggiSouth Korea Department of Pathology Asan Medical CenterUniversity of Ulsan College of MedicineSeoulSouth Korea Asan Institute for Life Sciences Asan Medical CenterUniversity of Ulsan College of MedicineSeoulSouth Korea Department of Immunology Sungkyunkwan University School of MedicineSeoulSouth Korea Department of Cancer Biomedical Science Graduate School of Cancer Science and PolicyResearch InstituteNational Cancer CenterGyeonggiSouth Korea

The homeostatic balance between effector T cells and regulatory T cells(Tregs)is crucial for adaptive immunity;however,epigenetic programs that inhibit phosphorylation to regulate Treg development,peripheral expression,and suppressive activity are ***,we found that the Ssu72 phosphatase is activated by various T-cell receptor signaling pathways,including the T-cell receptor and IL-2R pathways,and localizes at the cell *** of Ssu72 in T cells disrupts CD4+T-cell differentiation into Tregs in the periphery via the production of high levels of the effector cytokines IL-2 and IFNγ,which induce CD4+T-cell activation and differentiation into effector cell *** also found a close correlation between downregulation of Ssu72 and severe defects in mucosal tolerance in ***,Ssu72 forms a complex with PLCγ1,which is an essential effector molecule for T-cell receptor signaling as well as Treg development and ***72 deficiency impairs PLCγ1 downstream signaling and results in failure of Foxp3 ***,our studies show that the Ssu72-mediated cytokine response coordinates the differentiation and function of Treg cells in the periphery.

关键词： Ssu72 Regulatory T cells FoxP3 T cell receptor Autoimmunity

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Endoscopic cyanoacrylate injection for the treatment of gastric varices in children

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World Journal of Gastroenterology 2015年第9期21卷 2719-2724页

作者： Seak Hee Oh Seung Jin kim Kang Won Rhee kyung mo kim Department of Pediatrics Asan Medical Center Children’s HospitalUniversity of Ulsan College of MedicineSeoul 138-736South Korea

AIM:To evaluate the efficacy and safety of N-butyl-2-cyanoacrylate in treating acute bleeding of gastric varices in ***:The retrospective study included 21 children with 47 episodes of active gastric variceal bleeding who were treated by endoscopic injection of N-butyl-2-cyanoacrylate at Asan Medical Center Children's Hospital between August 2004 and December *** reduce the risk of embolism,each injection consisted of 0.1-0.5 mL of 0.5 mL N-butyl-2-cyanoacrylate diluted with 0.5 or 0.8 mL *** primary outcome was incidence of hemostasis after variceal obliteration and the secondary outcome was complication of the ***:The 21 patients experienced 47 episodes of active gastric variceal bleeding,including rebleeding,for which they received a total of 52 cyanoacrylate *** 42 bleeding episodes,hemostasis was achieved after one injection and following five bleeding episodes it was achieved after two *** mean volume of each single aliquot of cyanoacrylate injected was 0.3 ± 0.1 mL(range:0.1-0.5 m L).Injection achieved hemostasis in 45 of 47(95.7%) episodes of acute gastric variceal *** patients(52.4%) developed rebleeding events,with the mean duration of hemostasis being 11.1 ± 11.6 mo(range:1.0-39.2 mo).No treatment-related complications such as distal embolism were noted with the exception of abdominal pain in one patient(4.8%).Among four mortalities,one patient died of variceal ***:Endoscopic variceal obliteration using a small volume of aliquots with repeated cyanoacrylate injection was an effective and safe option for the treatment of gastric varices in children.

关键词： Cyanoacrylate Gastric varix Children Endoscopic va

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Soleus arthrogenic muscle inhibition following acute lateral ankle sprain correlates with symptoms and ankle disability but not with postural control

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Journal of Sport and Health Science 2024年第4期13卷 559-568,F0003页

作者： kyung-Min kim Joo-Sung kim Alan R.Needle Department of Sport Science Sungkyunkwan UniversitySuwon-si 16419Republic of Korea Department of Health and Human Performance Texas State UniversitySan MarcosTX 78666USA Department of Public Health&Exercise Science Appalachian State UniversityBooneNC 28608USA Department of Rehabilitation Science Appalachian State UniversityBooneNC 28608USA

Background:Acute lateral ankle sprains(ALAS)are associated with long-term impairments and instability tied to altered neural *** muscle inhibition(AMI)has been observed in this population;however,relationships with injury-related impairments are unclear,potentially due to the resting,prone position in which AMI is typically *** AMI during bipedal stance may provide a better understanding of this ***:AMI was assessed in 38 young adults(19 ALAS within 72 h of injury:10 males,21.4±2.7 years;19 healthy controls:10 males,21.9±2.2 years;mean±SD)using the Hoffmann reflex(H-reflex)during bipedal *** stimulation was administered to identify the _(max)imal H-reflex(H_(max))and _(max)imal motor response(M_(max))from the soleus,fibularis longus,and tibialis anterior *** primary outcome measure was the H_(max)/M_(max) *** outcomes included acute symptoms(pain and swelling),postural control during bipedal stance,and self-reported ***:No significant group-by-limb interactions were observed for any ***,a significant group main effect was observed in the soleus muscle(F(1,35)=6.82,p=0.013),indicating significantly lower H_(max)/M_(max) ratios following ALAS(0.38±0.20)compared to healthy controls(0.53±0.16).Furthermore,lower H_(max)/M_(max) ratios in the soleus significantly correlated with acute symptoms and self-reported function but not with postural ***:This study supports previous evidence of AMI in patients with ALAS,providing insight into neurophysiologic impacts of musculoskeletal *** results suggest that assessing AMI in a standing position following acute injury may provide valuable insight into how AMI develops and guide potential therapeutic options to curb and offset the formation of joint instability.

关键词： Acute injuries Balance Hoffmann reflex Neural excitability Patient-reported outcomes

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Trends in colorectal cancer incidence according to an increase in the number of colonoscopy cases in Korea

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World Journal of Gastrointestinal Oncology 2024年第1期16卷 51-60页

作者： Ga Hee kim Yeong Chan Lee Tae Jun kim Sung Noh Hong Dong kyung Chang Young-Ho kim Dong-Hoon Yang Chang mo moon kyunga kim Hyun Gun kim Eun-Ran kim Division of Gastroenterology Department of Internal MedicineAsan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Department of Digital Health Samsung Advanced Institute for Health Science and TechnologySungkyunkwan University School of MedicineSeoul 06351South Korea Division of Gastroenterology Department of Internal MedicineSamsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351South Korea Division of Gastroenterology Department of Internal MedicineEwha Womans UniversitySeoul 07985South Korea Biomedical Statistics Center Samsung Medical CenterSeoul 06351South Korea Division of Gastroenterology Department of Internal MedicineSoonchunhyang University College of MedicineSeoul 04401South Korea

BACKGROUND The incidence of colorectal cancer(CRC)and preinvasive CRC(e.g.,early colon cancer and advanced adenoma)is gradually increasing in several *** To evaluate the trend in incidence of CRC and preinvasive CRC according to the increase in the number of colonoscopies performed in *** This retrospective cohort study enrolled Korean patients from 2002 to 2020 to evaluate the incidence of CRC and preinvasive CRC,and assess the numbers of diagnostic colonoscopies and colonoscopic ***-related complications by age group were also *** The incidence of CRC showed a rapid increase,then decreased after 2012 in the 50-75 year-age *** the study period,the rate of incidence of preinvasive CRC increased at a similar level in patients under 50 and 50-75 years of *** 2009,the increase has been rapid,showing a pattern similar to the increase in *** rate of colonoscopic polypectomy in patients aged under 50 was similar to the rate in patients over 75 years of age after *** rate of complications after colonoscopy and related deaths within 3 mo was high for those over 75 years of *** The diagnosis of preinvasive CRC increased with the increase in the number of colonoscopies *** the risk of colonoscopy-related hospitalization and death is high in the elderly,if early lesions at risk of developing CRC are diagnosed and treated under or at the age of 75,colonoscopy-related complications can be reduced for those aged 76 years or over.

关键词： Colorectal cancer Preinvasive colorectal cancer Colorectal polypectomy Colonoscopy

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Assessment of pathogens and risk factors associated with bloodstream infection in the year after pediatric liver transplantation

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World Journal of Gastroenterology 2022年第11期28卷 1159-1171页

作者： Yeong Eun kim Ho Jung Choi Hye-Jin Lee Hyun Ju Oh Mi Kyoung Ahn Seak Hee Oh Jung-Man Namgoong Dae Yeon kim Won Kyoung Jhang Seong Jong Park Dong-Hwan Jung Deok Bog moon Gi-Won Song Gil-Chun Park Tae-Yong Ha Chul-Soo Ahn Ki-Hun kim Shin Hwang Sung Gyu Lee kyung mo kim Department of Pediatrics Asan Medical Center Children's HospitalUniversity of Ulsan College of MedicineSeoul 05505South Korea Division of Pediatric Surgery Department of SurgeryAsan Medical Center Children's HospitalUniversity of Ulsan College of MedicineSeoul 05505South Korea Division of Hepatobiliary Surgery and Liver Transplantation Department of SurgeryAsan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea

BACKGROUND Bloodstream infection(BSI)is one of the most significantly adverse events that can occur after liver transplantation(LT)in *** To analyze the profile of BSI according to the postoperative periods and assess the risk factors after pediatric *** Clinical data,collected from medical charts of children(n=378)who underwent primary LT,were retrospectively *** primary outcome considered was BSI in the first year after *** and multivariate analyses were performed to identify risk factors for BSI and respective odds ratios(ORs).RESULTS Of the examined patients,106(28%)experienced 162 episodes of pathogen-confirmed BSI during the first year after *** were 1.53±0.95 episodes per children(mean±SD)among BSIcomplicated patients with a median onset of 0.4 mo *** most common pathogenic organisms identified were Coagulase-negative staphylococci,followed by Enterococcus *** Streptococcus *** half(53%)of the BSIs were of unknown *** analysis demonstrated that young age(≤1.3 year;OR=2.1,P=0.011),growth failure(OR=2.1,P=0.045),liver support system(OR=4.2,P=0.008),and hospital stay of>44 d(OR=2.3,P=0.002)were independently associated with BSI in the year after *** BSI was frequently observed in patients after pediatric LT,affecting survival *** profile of BSI may inform clinical treatment and management in high-risk children after LT.

关键词： Bloodstream infection Liver transplantation Children Pathogens

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Particle morphology control for spherical powder fabrication using the ball milling process with DEM simulation

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Particuology 2024年第7期90卷 41-50页

作者： Battsetseg Jargalsaikhan Khulan Uranchimeg Amgalan Bor kyung Sung kim Heekyu Choi Research Institute of Future Convergence Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Material Science Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Department of Chemical and Biological Engineering School of Engineering and Applied SciencesNational University of MongoliaUlaanbaatar 14200Mongolia Department of Mechatronics Convergence Engineering College of Future ConvergenceChangwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Convergence on Culture Technology Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea

Characteristics of spherical particles on copper powder and changing sizes were studied in a ball mill under various experimental conditions,such as different ball diameters,high rotation speeds,and milling times,using a discrete element method(DEM)*** experiment has investigated the characteristics of spherical particle morphology evolution involved in the mechanical alloying of copper *** morphological evolution of the copper particle was analyzed using scanning electron microscopy(SEM).A spherical copper particle was shown with a roundness value using imageJ *** DEM was used to simulate the ball motion in a planetary ball mill,and the impact energy and shear energy generated during the collision were analyzed to estimate the contact number between the ball and the ball ***,as the size of the ball decreased,the number of ball-to-ball and ball-to-wall contacts increased accordingly,and the spherical shape of the copper powder changed.

关键词： Planetary ball mill DEM simulation Spherical particle morphology Copper powder Ball diameter

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Intracellular zinc signaling via Kruppel-like transcription factor 6 promotes HuD expression in pancreatic β cell

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Genes & Diseases 2024年第4期11卷 24-27页

作者： Seongho Cha Chongtae kim Myeongwoo Jung Seungyeon Ryu Sukyoung Han Wook kim Eun kyung Lee Department of Biochemistry Department of Biomedicine&Health SciencesCollege of MedicineThe Catholic University of KoreaSeoul 06591South Korea Catholic Institute for Visual Science College of MedicineThe Catholic University of KoreaSeoul 06591South Korea Department of molecular Science&Technology Ajou UniversitySuwon 16499South Korea

Dysfunction of pancreaticβcells caused by zinc deficiency is related to the pathogenesis of diabetes.1 Impaired zinc homeostasis in diabetes is associated with reduced zinc transporters.2 Down-regulation of HuD,an es... 详细信息

关键词： βcell homeostasis zinc

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Bone-targeted lipoplex-loaded three-dimensional bioprinting bilayer scaffold enhanced bone regeneration

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Regenerative Biomaterials 2024年第4期3卷 138-148页

作者： Woo-Jin kim Jeong-Hyun Ryu Ji Won kim Ki-Tae kim Hye-Rim Shin Heein Yoon Hyun-mo Ryoo Young-Dan Cho Department of molecular Genetics School of Dentistry and Dental Research InstituteSeoul National UniversitySeoul03080Republic of Korea Department of Periodontology School of Dentistry and Dental Research InstituteSeoul National University and Seoul National University Dental HospitalSeoul03080Republic of Korea

Clinical bone-morphogenetic protein 2(BMP2)treatment for bone regeneration,often resulting in complications like soft tissue inflammation and ectopic ossification due to high dosages and non-specific delivery systems,necessitates research into improved biomaterials for better BMP2 stability and *** tackle this challenge,we introduced a groundbreaking bone-targeted,lipoplex-loaded,three-dimensional bioprinted bilayer scaffold,termed the polycaprolactone-bioink-nanoparticle(PBN)scaffold,aimed at boosting bone *** encapsulated BMP2 within the fibroin nanoparticle based lipoplex(Fibroplex)and functionalized it with DSS6 for bone tissue-specific targeting.3D printing technology enables customized,porous PCL scaffolds for bone healing and soft tissue growth,with a two-step bioprinting process creating a cellular lattice structure and a bioink grid using gelatin-alginate hydrogel and DSS6-Fibroplex,shown to support effective nutrient exchange and cell growth at specific pore *** PBN scaffold is predicted through in silico analysis to exhibit biased BMP2 release between bone and soft tissue,a finding validated by in vitro osteogenic differentiation *** PBN scaffold was evaluated for critical calvarial defects,focusing on sustained BMP2 delivery,prevention of soft tissue cell infiltration and controlled fiber membrane pore size in *** PBN scaffold demonstrated a more than eight times longer BMP2 release time than that of the collagen sponge,promoting osteogenic differentiation and bone regeneration in a calvarial defect *** findings suggest that the PBN scaffold enhanced the local concentration of BMP2 in bone defects through sustained release and improved the spatial arrangement of bone formation,thereby reducing the risk of heterotopic ossification.

关键词： 3D bioprinting bone-targeting lipoplex BMP2 bone regeneration

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