|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 在Cu/ZnO/Al_2O_3催化剂上进行甲醇蒸气重整的动力学研究显示文摘采用平推流反应器 ,在三种不同的Cu ZnO Al2 O3催化剂上对甲醇的蒸气重整制备氢气反应进行了研究。在常压 ,温度 180℃~ 2 4 0℃的条件下 ,在三种不同催化剂上对反应的动力学进行了测定 ,所获结果符合反应速率幂数模型 ,不同的催化剂相对于甲醇和水的反应级数分别均为 0 60及 0 4 5 ,对于ICI5 2 1,ICI5 3 1以及MDK 2 0催化剂所获得的活化能分别为 :92 8kJ mol、96 2kJ mol及 87 9kJ mol,与文献值吻合较好。所获动力学模型为甲醇重整反应条件优化以及反应器的数学模拟提供了一定的基础。 | 蒋元力 黄强 王福安 Kim Dong Hyun Lim Mee Sook | 2001 | 燃料化学学报2001，29，4： | 22 |
| 2 | Proton pump inhibitor administration delays rebleeding after endoscopic gastric variceal obturation显示文摘AIM:To clarify the efficacy of proton pump inhibitors(PPIs)after endoscopic variceal obturation(EVO)with N-butyl-2-cyanoacrylate.METHODS:A retrospective study was performed on16 liver cirrhosis patients with gastric variceal bleeding that received EVO with injections of N-butyl-2-cyanoacrylate at a single center(Kyung Hee University Hospital at Gangdong)from January 2008 to December 2012.Medical records including patient characteristics and endoscopic findings were reviewed.Treatment results,liver function,serum biochemistry and cirrhosis etiology were compared between patients receiving PPIs and those that did not.Furthermore,the rebleeding interval was compared between patients that received PPI treatment after EVO and those who did not.RESULTS:The patient group included nine males and seven females with a mean age of 61.8±11.7years.Following the EVO procedure,eight of the 12patients that received PPIs and three of the four nonPPI patients experienced rebleeding.There were no differences between the groups in serum biochemistry or patient characteristics.The rebleeding rate was not significantly different between the groups,however,patients receiving PPIs had a significantly longer rebleeding interval compared to non-PPI patients(22.2±11.2mo vs 8.5±5.5 mo;P=0.008).The duration of PPI use was not related to the rebleeding interval.A total of six patients,who had ulcers at the injection site,exhibited a shorter rebleeding interval(16.8±5.9 mo)than patients without ulcers(19.9±3.2 mo),though this difference was not statistically significant.CONCLUSION:PPI therapy can extend the rebleeding interval,and should therefore be considered after EVO treatment for gastric varices. | Won Seok Jang Hyun Phil Shin Joung Ⅱ Lee Kwang Ro Joo Jae Myung Cha Jung Won Jeon Jun Uk Lim | 2014 | World Journal of Gastroenterology2014，20，45： | 17 |
| 3 | Endoscopic submucosal dissection for early gastric cancer with undifferentiated-type histology:A meta-analysis显示文摘AIM: To evaluate the efficacy and safety of endoscopicsubmucosal dissection(ESD) for early gastric cancer(EGC) with undifferentiated-type histology.METHODS: A systematic literature review was conducted using the core databases. Complete resection,curative resection, en bloc resection, recurrence and adverse event rate were extracted and analyzed. A random effect model was applied. The methodological quality of the enrolled studies was assessed using the Newcastle-Ottawa Scale. Publication bias was evaluated using a funnel plot, the trim and fill method, Egger's test,and a rank correlation test.RESULTS: Fourteen retrospective studies between2009 and 2014 were identified(972 EGC lesions with undifferentiated-type histology). The total en bloc and complete resection rates were estimated as92.1%(95%CI: 87.4%-95.2%) and 77.5%(95%CI:69.3%-84%), respectively. The total curative resection rate was 61.4%(95%CI: 44.5%-75.9%). The overall recurrence rate was 7.6%(95%CI: 3.4%-16%).Limited to histologically diagnosed expanded-criteria lesions, the en bloc and complete resection rates were91.2% and 85.6%, respectively. The curative resection rate was 79.8%.CONCLUSION: In this analysis, ESD is a technically feasible treatment modality for EGC with undifferentiatedtype histology. Long-term studies are needed to confirm these therapeutic outcomes. | Chang Seok Bang Gwang Ho Baik In Soo Shin Jing Bong Kim Ki Tae Suk Jai Hoon Yoon Yeon Soo Kim Dong Joon Kim Woon Geon Shin Kyung Ho Kim Hak Yang Kim Hyun Lim Ho Seok Kang Jong Hyeok Kim Jin Bae Kim Sung Won Jung Sea Hyub Kae Hyun Joo Jang Min Ho Choi | 2015 | World Journal of Gastroenterology2015，21，19： | 14 |
| 4 | Preoperative colonoscopy through the colonic stent in patients with colorectal cancer obstruction显示文摘AIM:To evaluate the feasibility of a preoperative colonoscopy through a self-expendable metallic stent(SEMS)and to identify the factors that affect complete colonoscopy.METHODS:A total of 48 patients who had SEMS placement because of acute malignant colonic obstruction underwent preoperative colonoscopy.After effective SEMS placement,patients who showed complete resolution of radiological findings and clinical signs of acute colon obstruction underwent a standard bowel preparation.Preoperative colonoscopy was then performed using a standard colonoscope.If the passage of colonoscope was not feasible gastroscope was used.After colonoscopy,cecal intubation time,grade of bowel preparation,tumor location,stent location,presence of synchronous polyps or cancer,damage to colonoscopy and bleeding,and stent migration after colonoscopy were recorded.RESULTS:Complete evaluation with colonoscope was possible in 30 patients(62.5%).In this group,adenoma was detected in 13 patients(43.3%).The factors that affected complete colonoscopy were also analyzed:Tumor location at an angle;stent placement at an angle;and stent expansion diameter,which affected complete colonoscopy significantly.However in multivariate analysis,stent expansion diameter was the only significant factor that affected complete colonoscopy.Complete evaluation using additional gastroscope was feasible in 42 patients(87.5%).CONCLUSION:Preoperative colonoscopy through the colonic stent using only conventional colonoscope was unfavorable.The narrow expansion diameter of the stent may predict unfavorable outcome.In such a case,using small caliber scope should be considered and may expect successful outcome. | Jin Su Kim Kang Moon Lee Sang Woo Kim Eun Jung Kim Chul Hyun Lim Seong Taek Oh Myung Gyu Choi Kyu Yong Choi | 2014 | World Journal of Gastroenterology2014，20，30： | 11 |
| 5 | Electrogastrography associated with symptomatic changes after prokinetic drug treatment for functional dyspepsia显示文摘AIM:To evaluate the effect of prokinetic drugs on electrogastrography(EGG) parameters according to symptomatic changes in patients with functional dyspepsia(FD).METHODS:Seventy-four patients with FD were prospectively enrolled in this study between December 2006 and December 2010.We surveyed the patients using a questionnaire on dyspeptic symptoms before and after an 8-wk course of prokinetic drug treatment.We also measured cutaneous pre-prandial and postprandial EGG recordings including percentage of gastric waves(normogastria,bradygastria,tachygastria),dominant frequency(DF),dominant power(DP),dominant frequency instability coefficient(DFIC),dominant power instability coefficient(DPIC),and the ratio of post-prandial to fasting in DP before and after the 8-wk course of prokinetic drug treatment.RESULTS:Fifty-two patients(70%) achieved symptomatic improvement after prokinetic drug treatment.Patients who had normal gastric slow waves showed symptom improvement group after treatment.Postprandial DF showed a downward trend in the symptom improvement group,especially in the itopride group.Post-prandial DP was increased regardless of symptom improvement,especially in the itopride group and mosapride group.Post-prandial DFIC and DPIC in the symptom improvement group were significantly increased after the treatment.The EGG power ratio was increased after treatment in the symptom improvement group(0.50 ± 0.70 vs 0.93 ± 1.77,P = 0.002),especially in the itopride and levosulpiride groups.CONCLUSION:Prokinetics could improve the symptoms of FD by regulating gastric myoelectrical activity,and EGG could be a useful tool in evaluating the effects of various prokinetics. | Hyun Chul Lim Sang In Lee Jiande DZ Chen Hyojin Park | 2012 | World Journal of Gastroenterology2012，18，41： | 11 |
| 6 | Optimal culture conditions for the generation of natural killer cell-induced dendritic cells for cancer immunotherapy显示文摘Dendritic cell(DC)-based vaccines continue to be considered an attractive tool for cancer immunotherapy.DCs require an additional signal from the environment or other immune cells to polarize the development of immune responses toward T helper 1(Th1)or Th2 responses.DCs play a role in natural killer(NK)cell activation,and NK cells are also able to activate and induce the maturation of DCs.We investigated the types of NK cells that can induce the maturation and enhanced function of DCs and the conditions under which these interactions occur.DCs that were activated by resting NK cells in the presence of inflammatory cytokines exhibited increased expression of several costimulatory molecules and an enhanced ability to produce IL-12p70.NK cell-stimulated DCs potently induced Th1 polarization and exhibited the ability to generate tumor antigen-specific cytotoxic T lymphocyte responses.Our data demonstrate that functional DCs can be generated by coculturing immature DCs with freshly isolated resting NK cells in the presence of Toll-like receptor agonists and proinflammatory cytokines and that the resulting DCs effectively present antigens to induce tumor-specific T-cell responses,which suggests that these cells may be useful for cancer immunotherapy. | Thanh-Nhan Nguyen-Pham Deok-Hwan Yang Truc-Anh Thi Nguyen Mi-Seon Lim Cheol Yi Hong Mi-Hyun Kim Hyun Ju Lee Youn-Kyung Lee Duck Cho Soo-Young Bae Jae-Sook Ahn Yeo-Kyeoung Kim Ik-Joo Chung Hyeoung-Joon Kim Je-Jung Lee | 2012 | Cellular & Molecular Immunology2012，9，1： | 8 |
| 7 | Clinical course of subepithelial lesions detected on upper gastrointestinal endoscopy显示文摘AIM:To evaluate the natural history of subepithelial lesions.METHODS:We reviewed the medical records of 104 159 patients who underwent upper gastrointestinal endoscopy at the Center for Health Promotion of Samsung Medical Center between 1996 and 2003.Subepithelial lesions were detected in 795 patients(0.76%);252 patients were followed using upper gastrointestinal endoscopy for 82.5 ± 29.2 mo(range,12-160 mo;median,84 mo;1st quartile,60 mo;3rd quartile,105 mo).The median interval of follow-up endoscopy was 12 mo(range,6-105 mo;1st quartile,12 mo;3rd quartile,24 mo).RESULTS:The mean patient age was 53 years(range,22-80 years),and the male-to-female ratio was 2.36:1(177/75).The lesion size at initial measurement averaged 8.9 mm(range,2-25 mm;median,8 mm;1st quartile,5 mm;3rd quartile,10 mm).Of the 252 lesions,244(96.8%) were unchanged and 8(3.2%) were significantly increased in size(from 12.9 ± 6.0 to 21.2 ± 12.2 mm) after a mean interval of 59.1 ± 27.5 mo(range,12-86 mo).Surgical resection of lesions was performed when the lesions were ≥ 3 cm in diameter.Two lesions were diagnosed as gastrointestinal stromal tumors with an intermediate or high risk of malignancy and one lesion was classified as a schwannoma.CONCLUSION:Most small subepithelial lesions do not change as shown by endoscopic examination,and regular follow-up with endoscopy may be considered in small,subepithelial lesions,especially lesions < 1 cm in size. | Yeun Jung Lim Hee Jung Son Jong-Soo Lee Young Hye Byun Hyun Joo Suh Pool Lyul Rhee Jae J Kim Jong Chul Rhee | 2010 | World Journal of Gastroenterology2010，16，4： | 6 |
| 8 | Absolute monocyte and lymphocyte count prognostic score for patients with gastric cancer显示文摘AIM:To measure the prognostic significance of absolute monocyte count/absolute lymphocyte count prognostic score(AMLPS) in patients with gastric cancer.METHODS:We retrospectively examined the combination of absolute monocyte count(AMC) and absolute lymphocyte count(ALC) as prognostic variables in a cohort of 299 gastric cancer patients who underwent surgical resection between 2006 and 2013 and were followed at a single institution.Both AMC and ALC were dichotomized into two groups using cut-off points determined by receiving operator characteristic curve analysis.An AMLPS was generated,which stratified patients into three risk groups:low risk(both low AMC and high ALC),intermediate risk(either high AMC or low ALC),and high risk(both high AMC and low ALC).The primary objective of the study was to validate the impact of AMLPS on both disease-free survival(DFS) and overall survival(OS),and the second objective was to assess the AMLPS as an independent prognostic factor for survival in comparison with known prognostic factors.RESULTS:Using data from the entire cohort,the most discriminative cut-off values of AMC and ALC selected on the receiver operating characteristic curve were 672.4/μL and 1734/μL for DFS and OS.AMLPS risk groups included 158(52.8%) patients in the lowrisk,128(42.8%) in the intermediate-risk,and 13(4.3%) in the high-risk group.With a median followup of 37.2 mo(range:1.7-91.4 mo),five-year DFS rates in the low-,intermediate-,and high-risk groups were 83.4%,78.7%,and 19.8%,respectively.And fiveyear OS rates in the low-,intermediate-,and high-risk groups were 89.3%,81.1%,and 14.4%,respectively.On multivariate analysis performed with patient- and tumor-related factors,we identified AMLPS,age,and pathologic tumor-node-metastasis stage as the most valuable prognostic factors impacting DFS and OS.CONCLUSION:AMLPS identified patients with a poor DFS and OS,and it was independent of age,pathologic stage,and various inflammatory markers. | Wan Kyu Eo Da Wun Jeong Hye Jung Chang Kyu Yeoun Won Sung Il Choi Se Hyun Kim Sung Wook Chun Young Lim Oh Tae Hwa Lee Young Ok Kim Ki Hyung Kim Yong Il Ji Ari Kim Heung Yeol Kim | 2015 | World Journal of Gastroenterology2015，21，9： | 6 |
| 9 | Signet-ring cell carcinoma arising from a fundic gland polyp in the stomach显示文摘Fundic gland polyps(FGPs)are currently the most common type of gastric polyps and are usually benign.However,although rare,gastric adenocarcinoma of FGP has been recently proposed as a new variant of gastric adenocarcinoma.Here we report the first case of a49-year-old woman with focal signet ring cell carcinoma that arose from an FGP of the stomach.The tumor was completely excised by endoscopic snare polypectomy.FGPs should therefore be evaluated for malignant changes although they occur rarely,if the FGP has an erosive or irregular surface. | Yong Seol Jeong Sung Eun Kim Mi-Jung Kwon Jae Yong Seo Hyun Lim Ji Won Park Ho Suk Kang Sung Hoon Moon Jong Hyuk Kim Choong Kee Park | 2014 | World Journal of Gastroenterology2014，20，47： | 6 |
| 10 | Randomized, Multicenter, Open-Label Study of Oxaliplatin Plus Fluorouracil/Leucovorin Versus Doxorubicin As Palliative Chemotherapy in Patients With Advanced Hepatocellular Carcinoma From Asia显示文摘 | Shukui Qin Yuxian Bai Ho Yeong Lim Sumitra Thongprasert Yee Chao Jia Fan Tsai-Shen Yang Vajarabhongsa Bhudhisawasdi Won Ki Kang Yu Zhou Jee Hyun Lee Yan Sun | 2013 | Journal of Clinical Oncology2013，，28： | 5 |
| 11 | Keystone design perforator island flap in facial defect reconstruction显示文摘Facial defect coverage is a common subject in the field of reconstructive surgery.There are many methods for facial defect reconstruction,and reconstructive surgeons should choose the most appropriate method on a case-by-case basis to achieve both functional and aesthetic improvement.Among various options for facial reconstruction,the local flap technique is considered the best reconstructive modality to provide good tissue matches of color and texture,which is consistent with the ideal goal of reconstruction(replacement of like-with-like).Keystone design perforator island flap(KDPIF),devised by Behan in 2003,has been applied to various fields of reconstructive surgery in the past decade due to its design simplicity,robust vascular supply,and reproducibility.Several studies have reported KDPIF reconstruction of facial defects,such as large parotid defects,small-to-moderate nasal defects,and eyelid defects.However,KDPIF has been used relatively less in facial defects than in other body regions,such as the trunk and extremities.The purpose of this review is to provide an organized overview of facial KDPIF reconstruction including the classification of KDPIF,modifications,physiology,mechanism of flap movement,consideration of facial relaxed skin tension lines and aesthetics,surgical techniques,clinical applications,and precautions for successful execution of KDPIF reconstruction. | Soo Yeon Lim Chi Sun Yoon Hyun Gun Lee Kyu Nam Kim | 2020 | World Journal of Clinical Cases2020，8，10： | 5 |
| 12 | Case of inappropriate ADH syndrome:Hyponatremia due to polyethylene glycol bowel preparation显示文摘Colonoscopic screening has been reported to reduce deaths from colorectal cancer.Adequate bowel preparation is essential for this and safety is an important issue in choosing the methods.Polyethylene glycol(PEG)is regarded as a safe method for cleansing,especially compared with oral sodium phosphate.Here,we present a case of hyponatremia caused by the syndrome of inappropriate antidiuretic hormone(ADH)syndrome after PEG precolonoscopic cleansing resulting in generalized tonic-clonic seizures.A 62-year-old women had ingested PEG for precolonoscopic bowel cleansing.While waiting for the colonoscopy,she developed a stuporous mentality and generalized tonic-clonic seizures,which did not correlate with brain magnetic resonance imaging.Her serum sodium level was 113 mEq per liter and laboratory analyses were consistent with inappropriate ADH syndrome.Her thyroid and adrenal functions were normal.There were no malignancies,infections,respiratory disorders or central nervous disorders and she had no history of taking either diuretics or other medications,which might have caused inappropriate ADH syndrome.She was treated with 3%hypertonic saline and showed a complete neurological recovery as her sodium levels recovered.Follow-up visits showed the patient to have a normal sodium level without neurologic deficits.This case shows that inappropriate ADH syndrome can be caused by PEG preparation,which implies that physicians have to be aware of the possible side effects of this colonic cleansing approach and mindful of the possible ensuing symptoms. | Sun-Hye Ko Chul-Hyun Lim Jae-Young Kim Seung Hun Kang Myong Ki Baeg Hyun Jin Oh | 2014 | World Journal of Gastroenterology2014，20，34： | 5 |
| 13 | Open versus laparoscopic surgery for mid or low rectal cancer after neoadjuvant chemoradiotherapy (COREAN trial): short-term outcomes of an open-label randomised controlled trial显示文摘 | Sung-Bum Kang Ji Won Park Seung-Yong Jeong Byung Ho Nam Hyo Seong Choi Duck-Woo Kim Seok-Byung Lim Taek-Gu Lee Dae Yong Kim Jae-Sung Kim Hee Jin Chang Hye-Seung Lee Sun Young Kim Kyung Hae Jung Yong Sang Hong Jee Hyun Kim Dae Kyung Sohn Dae-Hyun Kim Jae H | 2010 | Lancet Oncology2010，，7： | 5 |
| 14 | SIMULA在Cu/ZnO/Al_2O_3催化剂上进行甲醇部分氧化蒸气重整制备氢气的模拟研究(英文)显示文摘两个大气压下 ,对管状填充床反应器中在Cu ZnO Al2 O3催化剂上甲醇部分氧化蒸气重整制备氢气进行了实验研究。在Cu ZnO Al2 O3催化剂上进行该反应体系动力学研究的基础上 ,建立了该反应器内的稳态质量和热量衡算方程 ,同时考虑了颗粒内的扩散限制。模型的预测结果与实验结果吻合较好。 | 蒋元力 黄强 王福安 Mee Sook Lim Dong Hyun Kim | 2001 | 燃料化学学报2001，29，3： | 4 |
| 15 | Treatment for gastric ‘indefinite for neoplasm/dysplasia' lesions based on predictive factors显示文摘BACKGROUND Gastric ‘indefinite for neoplasm/dysplasia'(IFND) is a borderline lesion that is difficult to diagnose as either regenerative or neoplastic. There is a need for guidance in the identification of a subset of patients, who have an IFND lesion with a higher risk of malignant potential, to enable risk stratification and optimal management.AIM To determine the clinical and pathologic factors for the accurate diagnosis of gastric IFND lesions.METHODS In total, 461 gastric lesions diagnosed via biopsy as IFND lesions were retrospectively evaluated. Endoscopic resection(n = 134), surgery(n = 22), and follow-up endoscopic biopsy(n = 305) were performed to confirm the diagnosis.The time interval from initial biopsy to cancer diagnosis was measured, and diagnostic delays were categorized as > 2 wk, > 2 mo, > 6 mo, and > 1 year. The IFND lesions presenting as regenerating atypia(60%) or atypical epithelia(40%)at initial biopsy were adenocarcinomas in 22.6%, adenomas in 8.9%, and gastritis in 68.5% of the cases.RESULTS Four clinical factors [age ≥ 60 years(2.445, 95%CI: 1.305-4.580, P = 0.005),endoscopic size ≥ 10 mm(3.519, 95%CI: 1.891-6.548, P < 0.001), single lesion(5.702, 95%CI: 2.212-14.696, P < 0.001), and spontaneous bleeding(4.056, 95%CI:1.792-9.180, P = 0.001)], and two pathologic factors [atypical epithelium(25.575,95%CI: 11.537-56.695, P < 0.001], and repeated IFND diagnosis [6.022, 95%CI:1.822-19.909, P = 0.003)] were independent risk factors for gastric cancer. With two or more clinical factors, the sensitivity and specificity for carcinoma were91.3% and 54.9%, respectively. Ten undifferentiated carcinomas were initially diagnosed as IFND. In the subgroup analysis, fold change(5.594, 95%CI: 1.458-21.462, P = 0.012) predicted undifferentiated or invasive carcinoma in the submucosal layers or deeper. Diagnostic delays shorter than 1 year were not associated with worse prognoses. Extremely well-differentiated adenocarcinomas accounted for half of the repeated IFND cases and resulted in low diagnostic accuracy even on retrospective blinded review.CONCLUSION More than two clinical and pathologic factors each had significant cut-off values for gastric carcinoma diagnosis; in such cases, endoscopic resection should be considered. | Mi Jung Kwon Ho Suk Kang Hyeon Tae Kim Jin Woo Choo Bo Hyun Lee Sung Eun Hong Kun Ha Park Dong Min Jung Hyun Lim Jae Seung Soh Sung Hoon Moon Jong Hyeok Kim Hye-Rim Park Soo Kee Min Jin won Seo Ji-Young Choe | 2019 | World Journal of Gastroenterology2019，25，4： | 4 |
| 16 | Microbiology and risk factors for gram-positive Cocci bacteremia in biliary infections显示文摘Background:The rapid antibiotics treatment targeted to a specific pathogen can improve clinical outcomes of septicemia.We aimed to evaluate the clinical characteristics and outcomes of biliary septicemia caused by cholangitis or cholecystitis according to causative organisms.Methods:We performed a retrospective cohort study in 151 patients diagnosed with cholangitis or cholecystitis with bacterial septicemia from January 2013 to December 2015.All patients showed clinical evidence of biliary tract infection and had blood isolates that demonstrated septicemia.Results:Gram-negative,gram-positive,and both types of bacteria caused 84.1%(127/151),13.2%(20/151),and 2.6%(4/151)episodes of septicemia,respectively.The most common infecting organisms were Escherichia coli among gram-negative bacteria and Enterococcus species(Enterococcus casseliflavus and Enterococcus faecalis)among gram-positive bacteria.There were no differences in mortality,re-admission rate,and need for emergency decompression procedures between the gram-positive and gram-negative septicemia groups.In univariate analysis,previous gastrectomy history was associated with gram-positive bacteremia.Multivariate analysis also showed that previous gastrectomy history was strongly associated with gram-positive septicemia(Odds ratio=5.47,95%CI:1.19–25.23;P=0.029).Conclusions:Previous gastrectomy history was related to biliary septicemia induced by gram-positive organisms.This information would aid the choice of empirical antibiotics. | Ik Hyun Jo Yeon-Ji Kim Woo Chul Chung Jaeyoung Kim Seonhoo Kim Eun Sun Lim Honggeun Ahn Seong Yul Ryu | 2020 | Hepatobiliary & Pancreatic Diseases International2020，19，5： | 4 |
| 17 | Clinical Outcomes of Two‐Week Sequential and Concomitant Therapies for Helicobacter pylori Eradication: A Randomized Pilot Study显示文摘 | Ji Hyun Lim Dong Ho Lee Chiun Choi Seong Tae Lee Nayoung Kim Sook Hyang Jeong Jin Wook Kim Jin Hyeok Hwang Young Soo Park Sang Hyub Lee Cheol Min Shin Hyun Jin Jo Eun Sun Jang In sung Song Hyun Chae Jung | 2013 | Helicobacter2013，，3： | 4 |
| 18 | Does the discrepancy in histologic differentiation between a forceps biopsy and an endoscopic specimen necessitate additional surgery in early gastric cancer?显示文摘AIM To investigate the clinicopathological variables in early gastric cancer(EGC) patients in relation to differentiation discrepancy.METHODS The data of 265 specimens from 240 patients with EGC, who had undergone radical operation at Hallym University Sacred Heart Hospital from 2010 to 2015, were retrospectively analyzed. We evaluated clinical, endoscopic, and histopathological data according to histological discrepancy.RESULTS Clinically significant discrepancy rate showed the difference in differentiated type(well and moderately differentiated) and undifferentiated type(poorly differentiated and signet ring cell) between endoscopic biopsies and postoperative specimens was 9.4%(25/265). There were no differences in tumor location, size, gross pattern, and number of biopsies. Specimens having histological discrepancy showed more submucosal invasion(72.0% vs 49.6%, P = 0.033) and lymph node involvement(24.0% vs 7.9%, P = 0.009) than specimens having non-discrepancy. The rate of a positive epidermal growth factor receptor status was higher in specimens having discrepancy than in specimens having non-discrepancy(81.0% vs 55.4%, P = 0.035).CONCLUSION The discordance of histologic differentiation is associated with higher submucosal invasion and lymph node metastases in EGC. Patients have histological discrepancy may require additional surgical treatments. | Jae Seung Soh Hyun Lim Ho Suk Kang Jong Hyeok Kim Kab Choong Kim | 2017 | World Journal of Gastrointestinal Oncology2017，9，8： | 4 |
| 19 | Human mesenchymal stem cells derived from umbilical cord and bone marrow exert immunomodulatory effects in different mechanisms显示文摘BACKGROUND Mesenchymal stem cells(MSCs)are an attractive tool to treat graft-versus-host disease because of their unique immunoregulatory properties.Although human bone marrow-derived MSCs(BM-MSCs)were the most widely used MSCs in cell therapy until recently,MSCs derived from human umbilical cords(UC-MSCs)have gained popularity as cell therapy material for their ethical and noninvasive collection.AIM To investigate the difference in mechanisms of the immunosuppressive effects of UC-MSCs and BM-MSCs.METHODS To analyze soluble factors expressed by MSCs,such as indolamine 2,3-dioxygenase,cyclooxygenase-2,prostaglandin E2 and interleukin(IL)-6,inflammatory environments in vitro were reconstituted with combinations of interferon-gamma(IFN-γ),tumor necrosis factor alpha and IL-1βor with IFN-γalone.Activated T cells were cocultured with MSCs treated with indomethacin and/or anti-IL-10.To assess the ability of MSCs to inhibit T helper 17 cells and induce regulatory T cells,induced T helper 17 cells were cocultured with MSCs treated with indomethacin or anti-IL-10.Xenogeneic graft-versus-host disease was induced in NOG mice(NOD/Shi-scid/IL-2Rγnull)and UC-MSCs or BM-MSCs were treated as cell therapies.RESULTS Our data demonstrated that BM-MSCs and UC-MSCs shared similar phenotypic characteristics and immunomodulation abilities.BM-MSCs expressed more indolamine 2,3-dioxygenase after cytokine stimulation with different combinations of IFN-γ,tumor necrosis factor alpha-αand IL-1βor IFN-γalone.UC-MSCs expressed more prostaglandin E2,IL-6,programmed death-ligand 1 and 2 in the in vitro inflammatory environment.Cyclooxygenase-2 and IL-10 were key factors in the immunomodulatory mechanisms of both MSCs.In addition,UC-MSCs inhibited more T helper 17 cells and induced more regulatory T cells than BM-MSCs.UC-MSCs and BM-MSCs exhibited similar effects on attenuating graft-versus-host disease.CONCLUSION UC-MSCs and BM-MSCs exert similar immunosuppressive effects with different mechanisms involved.These findings suggest that UC-MSCs have distinct immunoregulatory functions and may substitute BM-MBSCs in the field of cell therapy. | Yunejin Song Jung-Yeon Lim Taekyu Lim Keon-Il Im Nayoun Kim Young-Sun Nam Young-Woo Jeon Jong Chul Shin Hyun Sun Ko In Yang Park Seok-Goo Cho | 2020 | World Journal of Stem Cells2020，12，9： | 4 |
| 20 | Nanocomposite quasi-solid-state electrolyte for high-safety lithium batteries显示文摘Rechargeable lithium batteries are attractive power sources for electronicdevices and are being aggressively developed for vehicular use. Nevertheless,problems with their safety and reliability must be solved for the large-scale useof lithium batteries in transportation and grid-storage applications. In this study,a unique hybrid solid-state electrolyte composed of an ionic liquid electrolyte(LiTFSI/Pyr14TFSI) and BaTiO3 nanosize ceramic particles was prepared withouta polymer. The electrolyte exhibited high thermal stability, a wide electrochemicalwindow, good ionic conductivity of 1.3×10-3 S-cm-1 at 30 ℃, and a remarkably highlithium-ion transference number of 0.35. The solid-state LiFePO4 cell exhibited thebest electrochemical properties among the reported solid-state batteries, along witha reasonable rate capability. Li/LiCoO2 cells prepared using this nanocompositesolid electrolyte exhibited high performance at both room temperature and a hightemperature, confirming their potential as lithium batteries with enhanced safetyand a wide range of oDerating temrperatures. | Hyunji Choi Hyun Woo Kim Jae-Kwang Kim Young Jun Lim Youngsik Kim Jou-Hyeon Ahn | 2017 | Nano Research2017，10，9： | 4 |
您所在的机构暂未开通此部分的功能，请联系管理员