|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Clinicopathological characteristics in the differential diagnosis of hepatoid adenocarcinoma:A literature review显示文摘Hepatoid adenocarcinoma (HAC) is a rare but important special type of extrahepatic adenocarcinoma with clinicopathological presentation mimicking hepatocellular carcinoma (HCC), and prompt and correct diagnosis can be a challenge, especially in endemic areas with a high incidence of HCC. To date, HAC has only been reported in case series or single case reports, so we aimed to review the clinicopathological characteristics of HAC to obtain a more complete picture of this rare form of extrahepatic adenocarcinoma. All the articles about HAC published from 2001 to 2011 were reviewed, and clinicopathological findings were extracted for analysis. A late middle-aged male with high serum α-fetoprotein and atypical image finding of HCC should raise the suspicion of HAC, and characteristic pathological immunohistochemical stains can help with the differential diagnosis. Novel immunohistochemical markers may be useful to clearly differentiate HAC from HCC. Once metastatic HAC is diagnosed, the primary tumor origin should be identified for adequate treatment. The majority of HAC originates from the stomach, so panendoscopy should be arranged first. | Jiann-Sheng Su Yu-Tso Chen Ren-Ching Wang Chun-Ying Wu Shou-Wu Lee Teng-Yu Lee | 2013 | World Journal of Gastroenterology2013，19，3： | 75 |
| 2 | Diagnostic value of PIVKA-Ⅱ and alpha-fetoprotein in hepatitis B virus-associated hepatocellular carcinoma显示文摘AIM: To determine the cutoff values and to compare the diagnostic role of alpha-fetoprotein(AFP) and prothrombin induced by vitamin K absence-Ⅱ(PIVKA-Ⅱ) in chronic hepatitis B(CHB).METHODS: A total of 1255 patients with CHB, including 157 patients with hepatocellular carcinoma(HCC), 879 with non-cirrhotic CHB and 219 with cirrhosis without HCC, were retrospectively enrolled. The areas under the receiver operating characteristic(AUROC) curves of PIVKA-Ⅱ, AFP and their combination were calculated and compared.RESULTS: The optimal cutoff values for PIVKA-Ⅱ and AFP were 40 m AU/m L and 10 ng/m L, respectively, for the differentiation of HCC from nonmalignant CHB. The sensitivity and specificity were 73.9% and 89.7%, respectively, for PIVKA-Ⅱ and 67.5% and 90.3% for AFP, respectively. The AUROC curves of both PIVKA-Ⅱ and AFP were not significantly different(0.854 vs 0.853, P = 0.965) for the differentiation of HCC from nonmalignant CHB, whereas the AUROC of PIVKA-Ⅱ was significantly better than that of AFP in patients with cirrhosis(0.870 vs 0.812, P = 0.042). When PIVKA-Ⅱ and AFP were combined, the diagnostic power improved significantly compared to either AFP or PIVKA-Ⅱ alone for the differentiation of HCC from nonmalignant CHB(P < 0.05), especially when cirrhosis was present(P < 0.05).CONCLUSION: Serum PIVKA-Ⅱ might be a better tumor marker than AFP, and its combination with AFP may enhance the early detection of HCC in patients with CHB. | Seung In Seo Hyoung Su Kim Won Jin Kim Woon Geon Shin Doo Jin Kim Kyung Ho Kim Myoung Kuk Jang Jin Heon Lee Joo Seop Kim Hak Yang Kim Dong Joon Kim Myung Seok Lee Choong Kee Park | 2015 | World Journal of Gastroenterology2015，21，13： | 60 |
| 3 | Electroacupuncture on PC6 Prevents Opioid-Induced Nausea and Vomiting after Laparoscopic Surgery显示文摘Objective:To investigate the treatment time dependence of electroacupuncture(EA) on Neiguan (PC6) for preventing postoperative nausea and vomiting(PONV).Methods:One hundred and seventy-eight patients,who had received intravenous patient-controlled analgesia(PCA) with Fentanyl,were assigned randomly to three groups using random numbers:a pre-operative EA group(PrEA),a post-operative EA group(PoEA),and a non-acupuncture control group(NC).An anesthetist evaluated the incidence and severity of nausea and vomiting for 48 h after surgery blindly.The main outcomes were severity and freguency of PONV,which were measured with a self-reported questionnaire and a confirmation from the anesthetist.The data were analyzed with ANOVA and Z-test.Results:The incidence of nausea and vomiting was significantly lower in the PrEA group than the NC group during 48 h after surgery(P<0.01,P<0.05).The incidence of vomiting was also significantly lower in the PrEA group than the PoEA group(P<0.05).The PoEA subjects evidenced no significant differences compared with the NC subjects in terms of the incidence of nausea and vomiting(P<0.05).The severity of nausea was significantly lower in the PrEA group than in the NC and PoEA groups(P<0.05).Conclusions:EA on PC6 is effective in the prevention of PONV,and pre-operative acupuncture is more effective than post-operative acupuncture. | Siwoo Lee Myeong Soo Lee Deok Hwa Choi Su Kyung Lee | 2013 | Chinese Journal of Integrative Medicine2013，19，4： | 32 |
| 4 | Alteration of p53 and p21 during hepatocarcinogenesis in tree shrews显示文摘AIM: To investigate p53 mutation and p21 expression in hepatocarcinogenesis induced by hepatitis B virus (HBV) and aflatoxin B1 (AFB1) in tree shrews, and to reveal the role of these genes in hepatocarcinogenesis.METHODS: Tree shrews were divided into four groups:group A, those infected with HBV and fed with AFB1 (n = 39);group B, those infected with HBV alone (n = 28); group C,those fed with AFB1 alone (n = 29); and group D, normal controls (n = 20). The tree shrews underwent liver biopsies once every 15 wk. Expression of p53 and p21 proteins and genes in the biopsies and tumor tissues of the experimental tree shrews was detected, respectively, by immunohistochemistry,and by Southem blotting and reverse transcription-polymerase chain reaction and sequencing.RESULTS: The incidence of hepatocellular carcinomas (HCC) was higher in group A (66.7%) than that in group B (3.57%) and C (30%). The time of HCC occurrence was also earlier in group A than that in group C (120.0±16.6 wk vs 153.3±5.8 wk, respectively, P<0.01). p53 protein was not detected by immunohistochemistry in all groups before the 75^th wk of the experiment. At the 105^th wk, the positive rates fo p53 were 78.6%, 60% and 71.4% in groups A, B and C, respectively, which were significantly higher than that in group D (10%) (all P<0.05). An abnormal band of p53 gene was observed in groups A and C. The mutation points of p53gene in tree shrews with HCC were at codons 275, 78 and 13. The nucleotide sequence and amino acid sequence of tree shrew's wild-type p53 showed 91.7% and 93.4% homologies with those of human p53,respectively. The immunopositivity for p21 was found before HCC development. The incidence of HCC was significantly higher in tree shrews that were positive for p21 than those negative for p21 (80.0% vs 11.0%, P<0.001).The incidence of HCC in p21 positive animals in group A was significantly higher than those positive for p21 in group C (P | Jian-Jia Su Yuan Li Ke-Chen Ban Liu-Liang Qin Chun Yang Chao Ou Xiao-Xian Duan Hui-Yun Wang Rui-Qi Yang Young-Lk Lee | 2004 | World Journal of Gastroenterology2004，10，24： | 21 |
| 5 | Plant ABC Transporters Enable Many Unique Aspects of a Terrestrial Plant's Lifestyle显示文摘陆上的植物有更多的 ATP 有约束力的盒子(ABC ) 二~四次 transporter 基因比另外的有机体,包括他们的祖先的 microalgae。最近的研究发现在这些 transporters 怀有变化的植物展出戏剧的显型,许多哪个与发展过程和为干燥土地上的生活必要的功能有关。这些结果建议在进化期间乘并且假定允许植物适应陆上的环境条件的新奇功能的那 ABC transporters。从这个观点在植物 ABC transporters 上检验文学导致了我们建议多样的 ABC transporters 启用了陆上的植物的生活方式的许多唯一、必要的方面,由搬运越过植物的特定的膜的各种各样的混合物。 | Jae-Ung Hwang Won-Yong Song Daewoong Hong Donghwi Ko Yasuyo Yamaoka Sunghoon Jang Sojeong Yim Eunjung Lee Deepa Khare Kyungyoon Kim Michael Palmgren Hwan Su Yoon Enrico Martinoia Youngsook Lee | 2016 | Molecular Plant2016，9，3： | 20 |
| 6 | Mitochondria-targeting drug conjugates for cytotoxic, anti-oxidizing and sensing purposes:current strategies and future perspectives显示文摘mitochondrial-targeting moieties to anticancer drugs, antioxidants and sensor molecules. Among them, the most widely applied mitochondrial targeting moiety is triphenylphosphonium(TPP), which is a delocalized cationic lipid that readily accumulates and penetrates through the mitochondrial membrane due to the highly negative mitochondrial membrane potential. Other moieties, including short peptides,dequalinium, guanidine, rhodamine, and F16, are also known to be promising mitochondrial targeting agents. Direct conjugation of mitochondrial targeting moieties to anticancer drugs, antioxidants and sensors results in increased cytotoxicity, anti-oxidizing activity and sensing activity, respectively,compared with their non-targeting counterparts, especially in drug-resistant cells. Although many mitochondria-targeted anticancer drug conjugates have been investigated in vitro and in vivo, further clinical studies are still needed. On the other hand, several mitochondria-targeting antioxidants have been analyzed in clinical phases I, II and III trials, and one conjugate has been approved for treating eye disease in Russia. There are numerous ongoing studies of mitochondria-targeted sensors. | Gantumur Battogtokh Yeon Su Choi Dong Seop Kang Sang Jun Park Min Suk Shim Kang Moo Huh Yong-Yeon Cho Joo Young Lee Hye Suk Lee Han Chang Kang | 2018 | Acta Pharmaceutica Sinica B2018，8，6： | 17 |
| 7 | Fabrication of 3D Printed PCL/PEG Polyblend Scaffold Using Rapid Prototyping System for Bone Tissue Engineering Application显示文摘 | Su A Park Sang Jin Lee Ji Min Seok Jun Hee Lee Wan Doo Kim Il Keun Kwon | 2018 | Journal of Bionic Engineering2018，15，3： | 15 |
| 8 | Management of entecavir-resistant chronic hepatitis B with adefovir-based combination therapies显示文摘AIM: To evaluate the long-term efficacy adefovir(ADV)-based combination therapies in entecavir(ETV)-resistant chronic hepatitis B(CHB) patients. METHODS: F i fty CHB pat ient s wi t h genotypic resistance to ETV at 13 medical centers in South Korea were included for the analysis. All the patients received rescue therapy with the combination of ADV plus ETV(ADV/ETV,n = 23) or ADV plus lamivudine(LMV)(ADV/LMV,n = 27) for more than 12 mo. Patients were monitored at least every 3-4 mo during ADV-based combination therapy by clinical examination as well as biochemical and virological assessments. Hepatitis B virus(HBV) DNA levels were measured by realtime PCR and logarithmically transformed for analysis. Cumulative rates of virologic response(VR; HBV DNA < 20 IU/m L) were calculated using the Kaplan-Meier method,and the difference was determined by a logrank test. Multivariate logistic regression and Cox proportional hazards models were used to identify independent risk factors significantly associated with short-term and long-term VR,respectively.RESULTS: Baseline median HBV DNA levels were 5.53(2.81-7.63) log10 IU/m L. The most commonly observed ETV genotypic mutation sites were rt184 and rt202. Patients were treated for a median of 27(12-45) mo. Overall,cumulative VR rates at 6,12,24,and 36 mo were 26%,36%,45%,and 68%,respectively. Patients treated with the ADV/ETV combination showed higher cumulative VR rates(35%,43%,65%,and 76%,respectively) than those with the ADV/LAM combination(18%,30%,30%,and 62%,respectively; P = 0.048). In the multivariate analysis,low baseline HBV DNA levels(< 5.2 log10 IU/m L) and initial virologic response at 3 mo(IVR-3; HBV DNA < 3.3 log10 IU/m L after 3 mo) were independent predictive factors for VR. Patients with favorable predictors achieved cumulative VR rates up to 90% at 36 mo. During the same period,the cumulative incidence of virologic breakthrough was as low as 6% in patients with the both favorable predictors.CONCLUSION: If tenofovir is not available,ADV/ETV combination could be considered in ETV-resistant patients with low HBV DNA titers,and may becontinued if IVR-3 is achieved. | Hyoung Su Kim Hyung Joon Yim Myoung Kuk Jang Ji Won Park Sang Jun Suh Yeon Seok Seo Ji Hoon Kim Bo Hyun Kim Sang Jong Park Sae Hwan Lee Sang Gyune Kim Young Seok Kim Jung Il Lee Jin-Woo Lee In Hee Kim Tae Yeob Kim Jin-Wook Kim Sook-Hyang Jeong Young Kul Jung Hana Park Seong Gyu Hwang | 2015 | World Journal of Gastroenterology2015，21，38： | 13 |
| 9 | New magnifying endoscopic classification for superficial esophageal squamous cell carcinoma显示文摘AIM To assess the accuracy of a new magnifying endoscopy(ME)classification for predicting depth of invasion of superficial esophageal squamous cell carcinoma(SESCC).METHODS This study included a total of 70 lesions in 69 patients with SESCC who underwent ME with narrow-band imaging(ME-NBI)before resection from August 2010 to July 2016.Accuracy of ME-NBI for predicting depth of invasion of SESCC was analyzed by using a new ME classification proposed by the Japan Esophageal Society(JES),and interobserver agreement was assessed.RESULTS Overall accuracy of ME-NBI for estimating depth of invasion of SESCC was 78.6%.Sensitivity and specificity of type B1 for tumors limited to the epithelial layer(m1)or invading into the lamina propria(m2)were 71.4%and 100%,respectively.Sensitivity and specificity of type B2 for tumors invading into the muscularis mucosa(m3)or superficial submucosa(≤200μm,sm1)were94.4%and 73.1%,respectively,while those of type B3for tumors invading into the deep submucosa(>200μm,sm2)were 75.0%and 97.8%,respectively.Interobserver agreement was excellent(κ=0.86,95%CI:0.76-0.95).CONCLUSION The recently developed JES ME classification is useful for predicting depth of invasion of SESCC,with reliable interobserver agreement. | Su Jin Kim Gwang Ha Kim Moon Won Lee Hye Kyung Jeon Dong Hoon Baek Bong Eun Lee Geun Am Song | 2017 | World Journal of Gastroenterology2017，23，24： | 13 |
| 10 | Plasma levels of acylated ghrelin in patients with functional dyspepsia显示文摘AIM:To investigate the relationship between plasma acylated ghrelin levels and the pathophysiology of functional dyspepsia.METHODS:Twenty-two female patients with functional dyspepsia and twelve healthy volunteers were recruited for the study.The functional dyspepsia patients were each diagnosed based on the Rome Ⅲ criteria.Eligible patients completed a questionnaire concerning the severity of 10 symptoms.Plasma acylated ghrelin levels before and after a meal were determined in the study participants using a commercial human acylated enzyme immunoassay kit;electrogastrograms were performed for 50 min before and after a standardized 10-min meal containing 265 kcal.RESULTS:There were no significant differences in plasma acylated ghrelin levels between healthy volunteers and patients with functional dyspepsia.However,in patients with functional dyspepsia,there was a negative correlation between fasting plasma acylated ghrelin levels and the sum score of epigastric pain(r =-0.427,P = 0.047) and a positive correlation between the postprandial/fasting plasma acylated ghrelin ratio and the sum score of early satiety(r = 0.428,P =0.047).Additionally,there was a negative correlation between fasting acylated ghrelin plasma levels and fasting normogastria(%)(r =-0.522,P = 0.013).Interestingly,two functional dyspepsia patients showed paradoxically elevated plasma acylated ghrelin levels after the meal.CONCLUSION:Abnormal plasma acylated ghrelin levels before or after a meal may be related to several of the dyspeptic symptoms seen in patients with functional dyspepsia. | Yeon Soo Kim Joon Seong Lee Tae Hee Lee Joo Young Cho Jin Oh Kim Wan Jung Kim Hyun Gun Kim Seong Ran Jeon Hoe Su Jeong | 2012 | World Journal of Gastroenterology2012，18，18： | 12 |
| 11 | Severe acute pancreatitis due to tamoxifen-induced hypertriglyceridemia with diabetes mellitus显示文摘The side effects of tamoxifen are generally mild, including the effect on lipoprotein metabolism. However, there are few cases of severe tamoxifen induced hypertriglyceridemia. Hypertriglyceridemia is a marked risk factor for acute pancreatitis and approximately 2% to 5% of cases of acute pancreatitis are related to drugs. We report on tamoxifen-induced hypertriglyceridemia and acute pancreatitis in a 40 years old woman with type 2 diabetes mellitus occurred by dexamethasone. She was treated with insulin infusion and fenofibrate, and goserelin acetate was started instead of tamoxifen after discharge from the hospital. Also, probable pathogenic hypotheses about the correlation between tamoxifen and dexamethasone induced type 2 diabetes mellitus on severe acute pancreatitis are provided. Clinicians should take care of risks of severe acute pancreatitis on using tamoxifen, especially for patients with dexamethasone induced diabetes mellitus. These individuals should undergo pre-post tamoxifen lipid screening and careful history taking of drugs, including dexamethasone. | Young Ae Kim Sol Lee Ji Woong Jung Yu Jin Kwon Gyeong Bok Lee Dong Gue Shin Sang Su Park Jin Yun Yong-Seog Jang Dong Hui Cho | 2014 | Chinese Journal of Cancer Research2014，26，3： | 12 |
| 12 | Brain-derived neurotrophic factor mediates macrophage migration inhibitory factor to protect neurons against oxygen-glucose deprivation显示文摘Macrophage migration inhibitory factor(MIF)is a chemokine that plays an essential role in immune system function.Previous studies suggested that MIF protects neurons in ischemic conditions.However,few studies are reported on the role of MIF in neurological recovery after ischemic stroke.The purpose of this study is to identify the molecular mechanism of neuroprotection mediated by MIF.Human neuroblastoma cells were incubated in Dulbecco’s modified Eagle’s medium under oxygen-glucose deprivation(OGD)for 4 hours and then returned to normal aerobic environment for reperfusion(OGD/R).30 ng/mL MIF recombinant(30 ng/mL)or ISO-1(MIF antagonist;50μM)was administered to human neuroblastoma cells.Then cell cultures were assigned to one of four groups:control,OGD/R,OGD/R with MIF,OGD/R with ISO-1.Cell viability was analyzed using WST-1 assay.Expression levels of brain-derived neurotrophic factor(BDNF),microtubule-associated protein 2(MAP2),Caspase-3,Bcl2,and Bax were detected by western blot assay and immunocytochemistry in each group to measure apoptotic activity.WST-1 assay results revealed that compared to the OGD/R group,cell survival rate was significantly higher in the OGD/R with MIF group and lower in the OGD/R with ISO-1 group.Western blot assay and immunocytochemistry results revealed that expression levels of BDNF,Bcl2,and MAP2 were significantly higher,and expression levels of Caspase-3 and Bax were significantly lower in the MIF group than in the OGD/R group.Expression levels of BDNF,Bcl2,and MAP2 were significantly lower,and expression levels of Caspase-3 and Bax were significantly higher in the ISO-1 group than in the OGD/R group.MIF administration promoted neuronal cell survival and induced high expression levels of BDNF,MAP2,and Bcl2(anti-apoptosis)and low expression levels of Caspase-3 and Bax(pro-apoptosis)in an OGD/R model.These results suggest that MIF administration is effective for inducing expression of BDNF and leads to neuroprotection of neuronal cells against hypoxic injury. | Su Hwan Bae Mi Ran Yoo Ye Yeong Kim In Kyung Hong Mi Hee Kim Seung Hak Lee Dae Yul Kim | 2020 | Neural Regeneration Research2020，15，8： | 11 |
| 13 | 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 |
| 14 | miR-106b promotes cancer progression in hepatitis B virusassociated hepatocellular carcinoma显示文摘AIM: To investigate the effect of mi R-106 b on tumor progression in hepatitis B virus(HBV)-associated hepatocellular carcinoma(HCC).METHODS: A total of 120 patients who underwent liver resection for HCC at National Cheng Kung University Hospital were enrolled in the present study. Micro RNA(mi RNA) array was first used to screen the mi RNA expression profiles in HCC patients. The clinical records were retrospectively analyzed, and correlations with the mi RNA expression profiles were evaluated. The m RNA expression levels of the mi R-106b-25 cluster(mi R-106 b, mi R-93 and mi R-25), and MCM7 in tumor and non-tumor samples were quantitated using quantitative real-time reverse transcription-polymerase chain reaction(q-RT-PCR) analysis, and correlations in the levels of mi R-106 b, mi R-93 and mi R-25 expression were calculated. Kaplan-Meier overall and diseasefree survival rates of HBV-associated HCC patients were analyzed using the log-rank test based on mi R-106 b expression. The comparison of the mi R-106 b expression levels in patients with different clinical outcomes was analyzed using Mann-Whitney U tests. Furthermore, a hepatitis B virus X protein(HBx) expression plasmid was transfected into Huh7 and Hep 3B cells. The expression levels of the mi R-106b-25 cluster and MCM7 in HBx-expressing Huh7 and Hep 3B cells were detected using q-RT-PCR. RESULTS: mi RNA array screening showed that mi R-106 b and its cluster, mi R-93 and mi R-25 were upregulated in HCC patients(P < 0.01). The value of mi R-106 b expression in HBV-associated HCC patients was significantly higher than that in HCV-(P < 0.05) or non-B/non-C-(P < 0.001) associated HCC patients. The expression of the mi R-106b-25 cluster was significantly higher in tumor tissue(P < 0.001) and associated with the host gene, MCM7, in clinical specimens from HBVassociated HCC patients. Furthermore, the expression levels of mi R-106 b, mi R-93 and mi R-25 were positively correlated in HBV-associated HCC tissues(mi R-106 vs mi R-93, r = 0.75; mi R-93 vs mi R-25, r = 0.69; mi R-106 b vs mi R-25, r = 0.33). The overall and diseasefree survival curves showed that high-mi R-106 b expression was correlated with the poor prognosis of HBV-associated HCC. HCC differentiation was significantly correlated with mi R-106 b expression(P < 0.05). Lower mi R-106 b expression levels resulted in the well differentiation of HCC. Moreover, the expression of the mi R106b-25 cluster and MCM7 was up-regulated in Huh7 and Hep 3B cells after transfection with the HBx expression plasmid.CONCLUSION: The data obtained in the present study suggests that HBx enhances mi R-106 b transcription to promote tumor progression in HBV-associated HCC. | Chia-Sheng Yen Zhi-Ru Su Yi-Ping Lee I-Ting Liu Chia-Jui Yen | 2016 | World Journal of Gastroenterology2016，22，22： | 11 |
| 15 | Understanding the physical metallurgy of the CoCrFeMnNi high-entropy alloy:an atomistic simulation study显示文摘Although high-entropy alloys(HEAs)are attracting interest,the physical metallurgical mechanisms related to their properties have mostly not been clarified,and this limits wider industrial applications,in addition to the high alloy costs.We clarify the physical metallurgical reasons for the materials phenomena(sluggish diffusion and micro-twining at cryogenic temperatures)and investigate the effect of individual elements on solid solution hardening for the equiatomic CoCrFeMnNi HEA based on atomistic simulations(Monte Carlo,molecular dynamics and molecular statics).A significant number of stable vacant lattice sites with high migration energy barriers exists and is thought to cause the sluggish diffusion.We predict that the hexagonal close-packed(hcp)structure is more stable than the face-centered cubic(fcc)structure at 0 K,which we propose as the fundamental reason for the micro-twinning at cryogenic temperatures.The alloying effect on the critical resolved shear stress(CRSS)is well predicted by the atomistic simulation,used for a design of non-equiatomic fcc HEAs with improved strength,and is experimentally verified.This study demonstrates the applicability of the proposed atomistic approach combined with a thermodynamic calculation technique to a computational design of advanced HEAs. | Won-Mi Choi Yong Hee Jo Seok Su Sohn Sunghak Lee Byeong-Joo Lee | 2018 | npj Computational Materials2018，，1： | 11 |
| 16 | Outcome after endoscopic submucosal dissection for early gastric cancer in Korea显示文摘Endoscopic treatment,such as endoscopic mucosal resection(EMR) and endoscopic submucosal dissection(ESD),has been established as one of the treatment options for selected cases with early gastric cancer(EGC).Most studies on this topic have been carried out by researchers in Japan.Recently,the experience in EMR/ESD for EGC outside Japan is increasingly reported.In Korea,gastric cancer is the most common malignant disease,and the second leading cause of cancer death.Currently,EMR for EGC is widely performed in many centers in Korea.Early results with a shortterm follow-up period are very promising in Korea.Thecomplete resection rate of EMR was 37.8%-94.3%,and that of ESD was 77.4%-93.1%.In this review,we will provide an overview of the outcomes of endoscopic treatments in Korea. | Jun Haeng Lee Su Jin Hong Jae Young Jang Seong Eun Kim Sang Young Seol | 2011 | World Journal of Gastroenterology2011，17，31： | 8 |
| 17 | Arabidopsis BAG1 Functions as a Cofactor in Hsc70-Mediated Proteasomal Degradation of Unimported Plastid Proteins显示文摘 | Dong Wook Lee Su Jin Kim Young Jun Oh Bongsoo Choi Juhun Lee Inhwan Hwang | 2016 | Molecular Plant2016，9，10： | 8 |
| 18 | Timing of upper gastrointestinal endoscopy does not influence short-term outcomes in patients with acute variceal bleeding显示文摘AIM To examine the association between the timing of endoscopy and the short-term outcomes of acute variceal bleeding in cirrhotic patients.METHODS This retrospective study included 274 consecutive patients admitted with acute esophageal variceal bleeding of two tertiary hospitals in Korea. We adjusted confounding factors using the Cox proportional hazards model and the inverse probability weighting(IPW) method. The primary outcome was the mortality of patients within 6 wk.RESULTS A total of 173 patients received urgent endoscopy(i.e., ≤ 12 h after admission), and 101 patients received nonurgent endoscopy(> 12 h after admission). The 6-wk mortality rate was 22.5% in the urgent endoscopy group and 29.7% in the non-urgent endoscopy group, and there was no significant difference between the two groups before(P = 0.266) and after IPW(P = 0.639). The length of hospital stay was statistically different between the urgent group and non-urgent group(P = 0.033); however, there was no significant difference in the inhospital mortality rate between the two groups(8.1% vs 7.9%, P = 0.960). In multivariate analyses, timing of endoscopy was not associated with 6-wk mortality(hazard ratio, 1.297; 95% confidence interval, 0.806-2.089; P = 0.284).CONCLUSION In cirrhotic patients with acute variceal bleeding, the timing of endoscopy may be independent of short-term mortality. | Jeong-Ju Yoo Young Chang Eun Ju Cho Ji Eun Moon Sang Gyune Kim Young Seok Kim Yun Bin Lee Jeong-Hoon Lee Su Jong Yu Yoon Jun Kim Jung-Hwan Yoon | 2018 | World Journal of Gastroenterology2018，24，44： | 8 |
| 19 | Efficacy of cap-assisted colonoscopy according to lesion location and endoscopist training level显示文摘AIM: To evaluate the efficacy of cap-assisted colonoscopy(CAC) for detection of colorectal polyps and adenomas according to the lesion location and endoscopist training level.METHODS: Patients 20 years or older, who underwent their first screening colonoscopy in a single tertiary center from May 2011 to December 2012 were enrolled in this study. All patients underwent either CAC or standard colonoscopy(SC), and all of the procedures were performed by 11 endoscopists(8 trainees and 3 experts). All procedures were performed with highdefinition colonoscopes and narrow band imaging. The eight trainees had experiences of performing 150 to 500 colonoscopies, and the three experts had experiences of performing more than 3000 colonoscopies. A 4-mmlong transparent cap was attached to the end of a colonoscope in the CAC group. We retrospectively evaluated the number of polyps and adenomas, polyp detection rate(PDR), and the number of adenomas and adenoma detection rate(ADR) according to the lesion location and endoscopist training level between CAC and SC. We also evaluated the number of polyps and adenomas according to their size between CAC and SC.RESULTS: Overall, PDR and ADR using CAC were significantly higher than those using SC for both whole colon(48.5% vs 40.7%, P = 0.012; 35.7% vs 28.3%, P = 0.012) and right-side colon(35.3% vs 26.6%, P = 0.002; 27.0% vs 16.9%, P < 0.001). The number of polyps and adenomas per patient using CAC was significantly higher than that using SC for both the whole colon(1.07 ± 1.59 vs 0.82 ± 1.31, P = 0.008; 0.72 ± 1.32 vs 0.50 ± 1.01, P = 0.003) and right-side colon(0.66 ± 1.18 vs 0.41 ± 0.83, P < 0.001; 0.46 ± 0.97 vs 0.25 ± 0.67, P < 0.001). In the trainee group, the PDR and ADR using CAC were significantly higher than those using SC for both the whole colon(46.7% vs 39.7%, P = 0.040; 33.9% vs 26.0%, P =0.012) and right-side colon(34.2% vs 26.5%, P = 0.015; 25.3% vs 15.9%, P = 0.001). In the expert group, the PDR and ADR using CAC were significantly higher than those using SC only for the right-side colon(42.1% vs 27.0%, P =0.035; 36.8% vs 21.0%, P = 0.020).CONCLUSION: CAC is more effective than SC for detection of colorectal polyps and adenomas, especially when performed by trainees and when the lesions are located in the right-side colon. | Dong Jun Kim Hyung Wook Kim Su Bum Park Dae Hwan Kang Cheol Woong Choi Joung Boom Hong Byoung Hoon Ji Chang Seok Lee | 2015 | World Journal of Gastroenterology2015，21，20： | 8 |
| 20 | Clinical and endoscopic characteristics of drug-induced esophagitis显示文摘AIM: To investigate clinical, endoscopic and pathological characteristics of drug-induced esophagitis.METHODS: Data for patients diagnosed with drug-induced esophagitis from April 2002 to May 2013 was reviewed. Patients diagnosed with malignancy, viral or fungal esophagitis were excluded. Clinical, endoscopic and pathological characteristics of patients diagnosed with drug-induced esophagitis were analyzed.RESULTS: Seventy-eight patients were diagnosed with drug-induced esophagitis. Their mean age was 43.9 ± 18.9 years and 35.9% were male. Common symptoms were chest pain(71.8%), odynophagia(38.5%) and dysphagia(29.5%). The endoscopic location was in the middle third of esophagus in 78.2%. Endoscopic findings were ulcer(82.1%), erosion(17.9%), ulcer with bleeding(24.4%), coating with drug material(5.1%), impacted pill fragments(3.8%) and stricture(2.6%). Kissing ulcers were observed in 43.6%. The main causative agents were antibiotics and non-steroidal antiinflammatory drugs. All the patients were treated with proton pump inhibitors(PPIs) or sucralfate, and the causative drugs were discontinued. Nineteen patients with drug-induced esophagitis were followed up with endoscopy and revealed normal findings, scars or healing ulcers.CONCLUSION: Drug-induced esophagitis mainly presents as chest pain, odynophagia and dysphagia, and may be successfully treated with PPIs and discontinuation of the causative drug. Kissing ulcers were observed in 43.6%. | Su Hwan Kim Ji Bong Jeong Ji Won Kim Seong-Joon Koh Byeong Gwan Kim Kook Lae Lee Mee Soo Chang Jong Pil Im Hyoun Woo Kang Cheol Min Shin | 2014 | World Journal of Gastroenterology2014，20，31： | 7 |
您所在的机构暂未开通此部分的功能，请联系管理员