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Double layered self-expanding metal stents for malignant esophageal obstruction, especially across the gastroesophageal junction

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World Journal of Gastroenterology 2012年第28期18卷 3732-3737页

作者： Min dae Kim Su Bum park dae Hwan Kang Jae Hyung Lee Cheol Woong Choi Hyung Wook Kim Chung Uk Chung Young Il Jeong Department of Internal Medicine Bongseng Memorial Hospital Busan 601-723 South Korea Department of Internal Medicine Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital Yangsan 626-770 South Korea

AIM: To evaluate the clinical outcomes of double-layered self-expanding metal stents (SEMS) for treatment of malignant esophageal obstruction according to whether SEMS crosses the gastroesophageal junction (GEJ). METHODS: Forty eight patients who underwent the SEMS insertion for malignant esophageal obstruction were enrolled. Patients were classified as GEJ group (SEMS across GEJ, 18 patients) and non-GEJ group (SEMS above GEJ, 30 patients) according to SEMS position. Double layered (outer uncovered and inner covered stent) esophageal stents were placed. RESULTS: The SEMS insertion and the clinical improvement were achieved in all patients in both groups. Stent malfunction occurred in seven patients in the GEJ group and nine patients in the non-GEJ group. Tumor overgrowth occurred in five and eight patients, respectively, food impaction occurred in one patient in each group, and stent migration occurred in one and no patient, respectively. There were no significant differences between the two groups. Reflux esophagitis occurred more frequently in the GEJ group (eight vs five patients, P = 0.036) and was controlled by proton pump inhibitor. Aspiration pneumonia occurred in zero and five patients, respectively, and tracheoesophageal fistula occurred in zero and two patients, respectively. CONCLUSION: Double-layered SEMS are a feasible and effective treatment when placed across the GEJ for malignant esophageal obstruction. Double-layered SEMS provide acceptable complications, especially migration, although reflux esophagitis is more common in the GEJ group.

关键词： Metal stent Gastroesophageal junction Malignant esophageal obstruction

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Thyroid peroxidase antibody positivity and triiodothyronine levels are associated with pediatric Graves'ophthalmopathy

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World Journal of Pediatrics 2014年第2期10卷 155-159页

作者： Jung Hyun Lee So Hyun park dae Gyun Koh Byung Kyu Suh Department of Pediatrics the Catholic University of KoreaSt.Vincent's Hospital93-6Ji-dongPaldal-guSuwon-siGyeonggi-doRepublic of Korea Department of Pediatrics the Catholic University of KoreaSeoul St.Mary's Hospital222 Banpo-daeroSeocho-guSeoulRepublic of Korea

Background:Graves'ophthalmopathy(GO)occurs commonly in children with Graves'disease(GD).However,there are limited studies on the clinical manifestations and thyroid autoantibodies in pediatric *** aim of this study was to investigate the prevalence and risk factors of GO in childhood ***:Clinical and biochemical data from children and adolescents with GD were retrospectively *** patients under 19 years of age were included in the present *** compared the clinical and biochemical differences between patients with and without ***:Thirty-nine percent of the patients had GO,and 81%of the GO patients were *** these,two patients showed unilateral ***(T3)levels were higher in GO patients than in those without ***-thyroglobulin antibody and thyroid stimulating hormone receptor antibody titers were not significantly different between the two ***-thyroid peroxidase antibody(TPO Ab)positivity was 68%in the patients with GO and only 47%in the patients without *** multivariate regression analysis,high T3 levels and TPO Ab positivity were related to the presence of ***:In children and adolescents with GD,TPO Ab positivity and high T3 levels could act as predictive factors for the presence of GO.

关键词： Graves'disease Graves'ophthalmopathy pediatrics thyroid peroxidase antibody triiodothyronine

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Assessment of disease activity by fecal immunochemical test in ulcerative colitis

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World Journal of Gastroenterology 2016年第48期22卷 10617-10624页

作者： dae Gon Ryu Hyung Wook Kim Su Bum park dae Hwan Kang Cheol Woong Choi Su Jin Kim Hyeong Seok Nam Department of Internal Medicine Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital

AIM To evaluate the efficacy of quantitative fecal immunochemical test(FIT) as biomarker of disease activity in ulcerative colitis(UC).METHODS Between February 2013 and November 2014, a total of 82 FIT results, obtained in conjunction with colonoscopies, were retrospectivelyevaluated for 63 patients with UC. The efficacy of FIT for evaluation of disease activity was compared to colonoscopic findings. Quantitative fecal blood with automated equipment examined from collected feces. Endoscopic disease severity were assessed using the Mayo endoscopic subscore(MES) classification. The extent of disease were classified by proctitis(E1), left sided colitis(E2), and extensive colitis(E3). Clinical activity were subgrouped by remission or *** All of 21 patients with MES 0 had negative FIT( 134.89 ng/m L. The sensitivity, specificity, positive predictive value(PPV), negative predictive value(NPV) and accuracy of negative FIT about mucosal healing were 73.33%, 81.82%, 91.49%, 51.43% and 73.17%, respectively. The sensitivity, specificity, PPV, NPV and accuracy of predictive value of positive FIT(cutoff value > 100 ng/mL) about active disease status were 45.45%, 93.33%, 71.43%, 82.35%and 26.83%, respectively. Among patients with clinical remission, FIT was negative in 31(81.6%) of 38 cases, with a mean fecal hemoglobin concentration of 6.12 ng/mL(range, negative to 80.9 ng/mL) for this group of patients. Among patients with clinical active disease, FIT was negative in 16(36.4%) out of 44 cases, with a mean fecal hemoglobin concentration > 167.4 ng/mL for this group of patients. FIT was positively correlated with endoscopic activity(r = 0.626, P < 0.01) and clinical activity(r = 0.496, P < 0.01). But, FIT did not correlate with the extent of disease(r =-0.047, P = 0.676)CONCLUSION Quantitative FIT can be a non-invasive and effective biomarker for evaluation of clinical and endoscopic activity in UC, but not

关键词： Ulcerative colitis Fecal immunochemical test Mayo endoscopic subscore Biomarker Disease activity

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A new hemostatic clip for endoscopic surgery that can maintain blood flow after clipping

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World Journal of Gastroenterology 2014年第5期20卷 1325-1331页

作者： Kyoung Won Nam Sang Bong Lee In Young Kim Kwang gi Kim Sang Jae park Department of Biomedical Engineering Hanyang University Biomedical Engineering Branch National Cancer Center Center for Liver Cancer National Cancer Center

AIM: To develop a new hemostatic device for endoscopic surgery that can control the bleeding without completely occluding the bleeding vessel.

关键词： Vessel bleeding Hemostasis Hemostatic clip Laparoscopic surgery Endoscopic surgery

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Robotic versus laparoscopic distal pancreatectomy for pancreatic ductal adenocarcinoma: A propensity score-matched analysis

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Hepatobiliary & Pancreatic Diseases International 2023年第2期22卷 154-159页

作者： Dakyum Shin Jaewoo Kwon Jae Hoon Lee Seo Young park Yejong park Woohyung Lee Ki Byung Song dae Wook Hwang Song Cheol Kim Division of Hepato-Biliary and Pancreatic Surgery Department of SurgeryAsan Medical CenterUniversity of Ulsan College of Medicine88 Olympic-ro 43-gilSongpa-guSeoul 05505Korea Department of Surgery Kangbuk Samsung HospitalSungkyunkwan University School of Medicine29 Saemunan-roJongno-guSeoul 03181Korea Department of Statistics and Data Science Korea National Open University86 Daehak-roJongno-guSeoul 03087Korea

Background: Minimally invasive surgery is becoming increasingly popular in the field of pancreatic surgery. However, there are few studies of robotic distal pancreatectomy(RDP) for pancreatic ductal adenocarcinoma(PDAC). This study aimed to investigate the efficacy and feasibility of RDP for PDAC. Methods: Patients who underwent RDP or laparoscopic distal pancreatectomy(LDP) for PDAC between January 2015 and September 2020 were reviewed. Propensity score matching analyses were performed. Results: Of the 335 patients included in the study, 24 underwent RDP and 311 underwent LDP. A total of 21 RDP patients were matched 1:1 with LDP patients. RDP was associated with longer operative time(209.7 vs. 163.2 min;P = 0.003), lower open conversion rate(0% vs. 4.8%;P gin(90.5% vs. 61.9%;P = 0.042). However, postoperative pancreatic fistula grade B or C showed no significant intergroup difference(9.5% vs. 9.5%). The median disease-free survival(34.5 vs. 17.3 months;P = 0.588) and overall survival(37.7 vs. 21.9 months;P = 0.171) were comparable between the groups. Conclusions: RDP is associated with longer operative time, a higher cost of surgery, and a higher likelihood of achieving R0 margins than LDP.

关键词： Minimally invasive surgery Robotic distal pancreatectomy Laparoscopic distal pancreatectomy Pancreatic ductal adenocarcinoma Propensity score matching

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Efficacy and safety of limited endoscopic sphincterotomy before self-expandable metal stent insertion for malignant biliary obstruction

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World Journal of Gastroenterology 2017年第9期23卷 1627-1636页

作者： Hyeong Seok Nam dae Hwan Kang Hyung Wook Kim Cheol Woong Choi Su Bum park Su Jin Kim dae Gon Ryu Department of Internal Medicine Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and TechnologyPusan National University Yangsan HospitalYangsan-siGyeongsangnam-do 50612South Korea

To evaluate the safety and efficacy of limited endoscopic sphincterotomy (ES) before placement of self-expandable metal stent (SEMS).METHODSThis was a retrospective analysis of 244 consecutive patients with unresectable malignant biliary obstruction, who underwent placement of SEMSs following limited ES from December 2008 to February 2015. The diagnosis of malignant biliary obstruction and assessment of patient eligibility for the study was established by a combination of clinical findings, laboratory investigations, imaging and pathological results. All patients were monitored in the hospital for at least 24 h following endoscopic retrograde cholangio pancreatography (ERCP). The incidence of immediate or early post-ERCP complications such as post-ERCP pancreatitis (PEP) and bleeding related to limited ES were considered as primary outcomes. Also, characteristics and complications according to the cancer type were *** the 244 patients included, the underlying diagnosis was cholangiocarcinoma in 118 patients, pancreatic cancer in 79, and non-pancreatic or non-biliary malignancies in the remaining 47 patients. Early post-ERCP complications occurred in 9 patients (3.7%), with PEP in 7 patients (2.9%; mild, 6; moderate, 1) and mild bleeding in 2 patients (0.8%). There was no significant association between the incidence of post-ERCP complications and the type of malignancy (cholangiocarcinoma vs pancreatic cancer vs others, P = 0.696) or the type of SEMS used (uncovered vs covered, P = 1.000). Patients who had more than one SEMS placed at the first instance were at a significantly higher risk of post-ERCP complications (one SEMS vs two SEMS, P = 0.031). No other factors were predictive of post-ERCP *** ES is feasible and safe, and effectively facilitates the placement of SEMS, without any significant risk of PEP or severe bleeding.

关键词： Endoscopic sphincterotomy Endoscopic retrograde cholangio pancreatography Complications Pancreatitis Bleeding Cholestasis Self-expandable metal stent

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Synthesis of Al-doped ZnO Nanorods via Microemulsion Method and Their Application as a CO Gas Sensor

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Journal of Materials Science & Technology 2015年第6期31卷 639-644页

作者： Sang Kyoo Lim Seong Hui Hong Sung-Ho Hwang Won Mi Choi Soonhyun Kim Hyunwoong park Min gi Jeong Division of Nano & Bio Technology Daegu Gyeongbuk Institute of Science and Technology(DGIST) School of Energy Engineering Kyungpook National University Department of Advanced Organic Materials Engineering Yeungnam University

Aluminum doped ZnO(AZO) nanorods were synthesized by microemulsion method with different types of *** phase and the morphology of the above nanorods were investigated by scanning electron microscopy(SEM) and X-ray diffraction(XRD).SEM observations showed that the ZnO nanorods had diameters around about 50—200 nm and lengths up to several *** CO gas sensing properties of the AZO nanorods were tested at operating temperatures of 200,300,350 and 400 ℃.It was found that AZO nanorods based sensor exhibited the highest sensitivity to CO at 350℃.

关键词： Zinc oxide Nanorod Microemulsion Aluminum CO and g

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Bounding box extraction from spherical hologram of elementary object to synthesize hologram of arbitrary three-dimensional scene with occlusion consideration(Invited Paper)

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Chinese Optics Letters 2014年第6期12卷 86-90页

作者： Jae-Hyeung park Hong-gi Lim School of Information and Communication Engineering Inha UniversityInha-ro 100Nam-gu Incheon 402-751 Korea

A novel method to extract a bounding box that contains the three-dimensional object from its spherical hologram is proposed. The proposed method uses the windowed Fourier transform to obtain the angular distribution of the quasi-collimated beams at each position in the spherical hologram and estimates the bounding box by accumulating the quasi-collimated beams in the volume inside the spherical hologram. The estimated bounding box is then used to realize occlusion effect between the objects in the synthesis of the three-dimensional scene hologram.

关键词： Bounding box extraction from spherical hologram of elementary object to synthesize hologram of arbitrary three-dimensional scene with occlusion consideration

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Hydrangeae Dulcis Folium Attenuates Physical Stress by Supressing ACTH-Induced Cortisol in Zebrafish

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Chinese Journal of Integrative Medicine 2020年第2期26卷 130-137页

作者： Junyoung Oh Dong Hyun Kim gi-young Kim Eun-Jin park Jong Hoon Ryu Ji Wook Jung Se Jin park Gwang-Woo Kim Seungheon Lee Department of Marine Life Science College of Ocean ScienceJeju National UniversityJeju(63243)Republic of Korea Departme nt of Medicinal Biotech no logy College of Health SciencesDong-A UniversityBusan(604-714)Republic of Korea Department of Food Bioengineering Jeju National UniversityJeju(63243)Republic of Korea Institute of Convergence BioHealth Dong-A UniversityBusan(604-714)Republic of Korea Department of Oriental Pharmaceutical Science College of PharmacyKyung Hee UniversityHoeki-dongDongdaemoon・KuSeoul(130-701)Republic of Korea Kyung Hee East-West Pharmaceutical Research Institute College of PharmacyKyung Hee UniversityHoeki-dongDongdaemoorvKuSeoul(130-701)Republic of Korea Department of Herbal Medicinal Pharmacology College of Herbal Bio-industryDaegu Haany UniversityYugok-dongGyeongsan(712-715)Republic of Korea School of Natural Resources and Environmental Sciences Kangwon National UniversityChuncheon(24341)Republic of Korea Marine Bio Con verge nee Center Gangneung Science&In dustry Promotion AgencyGangneung(25440)Republic of Korea

Objective:To determine the effects of Hydrangeae Dulcis Folium(EHDF)on physical stress,changes in the whole-body cortisol level and behaviour in zebrafish(Danio rerio).Methods:One hundred and seventy-four fish were randomly divided into 4[adrenocorticotropin hormone(ACTH)challenge test:4 fish per group]or 6 groups(behavioural test:10–12 fish per group,whole-body cortisol:4 fish per group).Net handling stress(NHS)was used to induce physical *** were treated with vehicle or EHDF(5–20 mg/L)for 6 min before they were exposed to *** then,fish were sacrificed for collecting body fluid from whole-body or conducted behavioural tests,including novel tank test and open field test,and were evaluated to observe anxiety-like behaviours and *** addition,to elucidate the mode of action of the anti-stress effects of EHDF,ACTH(0.2 IU/g,i.p.)challenge test was ***:The increased anxiety-like behaviours in novel tank test and open field test under stress were prevented by treatment with EHDF at 5–20 mg/L(P<0.05).Moreover,compared with the unstressed group,which was not treated with NHS,the whole-body cortisol level was significantly increased by treatment with NHS(P<0.05).Compared with the NHS-treated stressed control group,pre-treatment with EHDF at concentrations of 5–20 mg/L for 6 min significantly prevented the NHS-increased whole-body cortisol level(P<0.05).In addition,ACTH challenge test showed that EHDF completely blocked the effects of ACTH on cortisol secretion(P<0.05).Conclusion:EHDF may be a good antistress candidate and its mechanism of action may be related to its positive effects on cortisol release.

关键词： net handling stress zebrafish Hydrangeae Dulcis Folium whole-body cortisol behavioural tests

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Somatostatin adjunctive therapy for non-variceal upper gastrointestinal rebleeding after endoscopic therapy

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World Journal of Gastroenterology 2011年第29期17卷 3441-3447页

作者： Cheol Woong Choi dae Hwan Kang Hyung Wook Kim Su Bum park Kee Tae park Gwang Ha Kim Geun Am Song Mong Cho Department of Internal Medicine Pusan National University School of Medicine and Medical Research InstituteYangsan-siGyeongsangnam-do 626-770South Korea

AIM:To evaluate the effect of pantoprazole with a somatostatin adjunct in patients with acute non-variceal upper gastrointestinal bleeding(NVUgiB).METHODS:We performed a retrospective analysis of a prospective database in a tertiary care university *** October 2006 to October 2008,we enrolled 101 patients with NVUgiB that had a high-risk stigma on *** 24 h of hospital admission,all patients underwent endoscopic *** successful endoscopic hemostasis,all patients received an 80-mg bolus of pantoprazole followed by continuous intravenous infusion(8 mg/h for 72 h).The somatostatin adjunct group(n=49)also received a 250-μg bolus of somatostatin,followed by continuous infusion (250μg/h for 72 h).Early rebleeding rates,disappearance of endoscopic stigma and risk factors associated with early rebleeding were ***:Early rebleeding rates were not significantly different between treatment groups(12.2%vs 14.3%,P=0.766).Disappearance of endoscopic stigma on the second endoscopy was not significantly different between treatment groups(94.2%vs 95.9%,P=0.696).Multivariate analysis showed that the complete Rockall score was a significant risk factor for early rebleeding(P =0.044,OR:9.080,95%CI:1.062-77.595).CONCLUSION:The adjunctive use of somatostatin was not superior to pantoprazole monotherapy after successful endoscopic hemostasis in patients with NVUgiB.

关键词： Somatostatin Pantoprazole Gastrointestinal bleeding Rebleeding

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