|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Methylation-dependent loss of RIP3 expression in cancer represses programmed necrosis in response to chemotherapeutics显示文摘交往受体的蛋白质 kinase-3 (RIP3 或 RIPK3 ) 是执行 “ 的细胞的机械的必要部分; programmed”或 “ regulated”坏死。这里,我们证明那规划坏死响应许多化学疗法的代理人被激活并且贡献导致化疗的房间死亡。然而,我们证明那 RIP3 表情经常在化学疗法的死亡期间由于它的 transcriptional 开始地点, MLKL 的这样 RIP3 依赖的激活和下游地规划的坏死附近的 genomic methylation 是在癌症房间的 silenced 大部分被镇压。不过,有 hypomethylating 代理人的治疗恢复 RIP3 表示,并且从而以一种 RIP3 依赖的方式把敏感提升到 chemotherapeutics。RIP3 表示在 85% 乳癌病人与正常织物相比在肿瘤被减少,建议那 RIP3 缺乏断然在肿瘤生长 / 发展期间被选择。因为 hypomethylating 代理人在病人是相当容忍得好的,我们建议病人们可以从收到 hypomethylating 代理人与常规 chemotherapeutics 在治疗以前导致 RIP3 表示有益于的那 RIP3 缺乏的癌症。 | Gi-Bang Koo Michael J Morgan Da-Gyum Lee Woo-Jung Kim Jung-Ho Yoon Ja Seung Koo Seung I1 Kim Soo Jung Kim Mi Kwon Son Soon Still Hong Jean M Mulcahy Levy Daniel A Pollyea Craig T Jordan Pearlly Yan David Frankhouser Deedra Nicolet Kati Maharry Guido Marcucci Kyeong Sook Choi Hyeseong Cho ndrew Thorbum You-Sun Kim | 2015 | Cell Research2015，25，6： | 20 |
| 2 | Effect of vehicle weight on natural frequencies of bridges measured from traffic-induced vibration显示文摘Recently, ambient vibration test (AVT) is widely used to estimate dynamic characteristics of large civil structures. Dynamic characteristics can be affected by various environmental factors such as humidity, intensity of wind, and temperature. Besides these environmental conditions, the mass of vehicles may change the measured values when traffic-induced vibration is used as a source of AVT for bridges. The effect of vehicle mass on dynamic characteristics is investigated through traffic-induced vibration tests on three bridges; (1) three-span suspension bridge (128m+404m+128m), (2) five-span continuous steel box girder bridge (59m+3@95m+59m), (3) simply supported plate girder bridge (46m). Acceleration histories of each measurement location under normal traffic are recorded for 30 minutes at field. These recorded histories are divided into individual vibrations and are combined into two groups according to the level of vibration; one by heavy vehicles such as trucks and buses and the other by light vehicles such as passenger cars. Separate processing of the two groups of signals shows that, for the middle and long-span bridges, the difference can be hardly detected, but, for the short span bridges whose mass is relatively small, the measured natural frequencies can change up to 5.4%. | Chul-Young Kim Dae-Sung Jung Nam-Sik Kim Soon-Duck Kwon Maria Q.Feng | 2003 | Earthquake Engineering and Engineering Vibration2003，2，1： | 15 |
| 3 | 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 |
| 4 | Endoscopic features suggesting gastric cancer in biopsy-proven gastric adenoma with high-grade neoplasia显示文摘AIM:To elucidate the endoscopic features that predict the cancer following endoscopic submucosal dissection(ESD)in patients with high-grade neoplasia(HGN).METHODS:We retrospectively analyzed the medical records of patients who underwent ESD of gastric neoplasms from January 2007 to September 2010.ESD was performed in 555 cases involving 550 patients.A total of 112 lesions from 110 consecutive patients were initially diagnosed as HGN without cancer by forceps biopsy,and later underwent ESD.We classified lesions into two groups according to histologic discrepancies between the biopsy and ESD diagnosis.Gastric adenoma in the final diagnosis by ESD specimens were defined as adenoma group.Lesions with coexisting cancer after ESD were defined as cancer group.RESULTS:The mean age was 65.3 years,and 81 patients were male.There was no significant difference in the age or gender distribution between the adenoma(n=52)and cancer(n=60)groups.Thirty-six of these lesions(32.1%)showed histologic concordance between the forceps biopsy and ESD specimens,16(14.3%)showed a downgraded histology(low-grade neoplasia),and 60(53.6%)showed an upgraded histology(cancer).A red color change of the mucosal surface on endoscopy was found in 27/52(51.9%)of cases in the adenoma group and in 46/60(76.7%)of cases in the cancer group(P=0.006).Ulceration of the mucosal surface on endoscopy was found in 5(9.6%)of 52 lesions in the adenoma group and in 17(28.3%)of 60 lesions in the cancer group(P=0.013).In the multivariate analysis,a reddish surface color change and mucosal ulceration were significant predictive factors correlated with cancer after ESD of the HGN by forceps biopsy.CONCLUSION:HGN with a red color change or mucosal ulceration correlated with the presence of gastric cancer.These finding may help to guide the diagnosis and treatment. | Jung Ho Kim Yoon Jae Kim Jungsuk An Jong Joon Lee Jae Hee Cho Kyoung Oh Kim Jun-Won Chung Kwang An Kwon Dong Kyun Park Ju Hyun Kim | 2014 | World Journal of Gastroenterology2014，20，34： | 10 |
| 5 | Gastric leptomeningeal carcinomatosis: Multi-center retrospective analysis of 54 cases显示文摘AIM: To identify the clinical features and outcomes of infrequently reported leptomeningeal carcinomatosis (LMC) of gastric cancer.METHODS: We analyzed 54 cases of cytologically confirmed gastric LMC at four institutions from 1994 to 2007.RESULTS: The male-to-female ratio was 32:22, and the patients ranged in age from 28 to 78 years (median,48.5 years). The majority of patients had advanced disease at initial diagnosis of gastric cancer. The clini-cal or pathologic tumor, node and metastasis stage ofthe primary gastric cancer wasin 38 patients (70%).The median interval from diagnosis of the primarymalignancy to the diagnosis of LMC was 6.3 mo, rang-ing between 0 and 73.1 mo. Of the initial endoscopic f indings for the 45 available patients, 23 (51%) of the patients were Bormann typeand 15 (33%) patientswere Bormann type. Pathologically, 94% of cases proved to be poorly differentiated adenocarcinomas. Signet ring cell component was also observed in 40% of patients. Headache (85%) and nausea/vomiting (58%) were the most common presenting symptoms of LMC. A gadolinium-enhanced magnetic resonance imaging was conducted in 51 patients. Leptomeningeal enhancement was noted in 45 cases (82%). Intrathecal (IT) chemotherapy was administered to 36 patients-primarily methotrexate alone (61%), but also in combi-nation with hydrocortisone/± Ara-C (39%). The median number of IT treatments was 7 (range, 1-18). Concomitant radiotherapy was administered to 18 patients, and concomitant chemotherapy to seven patients. Sev-enteen patients (46%) achieved cytological negative conversion. Median overall survival duration from the diagnosis of LMC was 6.7 wk (95% CI: 4.3-9.1 wk). In the univariate analysis of survival duration, hemoglobin, IT chemotherapy, and cytological negative conversion showed superior survival duration (P = 0.038, P = 0.010, and P = 0.002, respectively). However, in our multivariate analysis, only cytological negative conversion was predictive of relatively longer survival duration (3.6, 6.7 and 14.6 wk, P = 0.030, RR: 0.415, 95% CI: 0.188-0.918).CONCLUSION: Although these patients had a fatal clinical course, cytologic negative conversion by IT chemotherapy may improve survival. | Sung Yong Oh Su-Jin Lee Jeeyun Lee Suee Lee Sung-Hyun Kim Hyuk-Chan Kwon Gyeong-Won Lee Jung Hun Kang In Gyu Hwang Joung-Soon Jang Ho Yeong Lim Young Suk Park Won Ki Kang Hyo-Jin Kim | 2009 | World Journal of Gastroenterology2009，15，40： | 10 |
| 6 | In-situ formation of MOF derived mesoporous Co3N/amorphous N-doped carbon nanocubes as an efficient electrocatalytic oxygen evolution reaction显示文摘The suitable materials,metal nitrides,are a promising class of electrocatalyst materials for a highly efficient oxygen evolution reaction (OER) because they exhibit superior intrinsic conductivity and have higher sustainability than oxide-based materials.To our knowledge,for the first time,we report a designable synthesis of three-dimensional (3D) and mesoporous Co3N@ amorphous N-doped carbon (AN-C) nanocubes (NCs) with well-controlled open-framework structures via monodispersed Co3[Co(CN)6]2 Prussian blue analogue (PBA) NC precursors using in situ nitridation and calcination processes.Co3N@AN-C NCs (2 h) demonstrate better OER activity with a remarkably low Tafel plot (69.6 mV-dec-1),low overpotential of 280 mV at a current density of 10 mA-crrf2.Additionally,excellent cycling stability in alkaline electrolytes was exhibited without morphological changes and voltage elevations,superior to most reported hierarchical structures of transition-metal nitride particles.The presented strategy for synergy effects of metal-organic frameworks (MOFs)-derived transition-metal nitrides-carbon hybrid nanostructures provides prospects for developing high-performance and advanced electrocatalyst materials. | Bong Kyun Kang Seo Young Im Jooyoung Lee Sung Hoon Kwag Seok Bin Kwon SintayehuNibret Tiruneh Min-Jun Kim Jung Ho Kim Woo Seok Yang Byungkwon Lim Dae Ho Yoon | 2019 | Nano Research2019，12，7： | 8 |
| 7 | Neuroprotection via maintenance or increase of antioxidants and neurotrophic factors in ischemic gerbil hippocampus treated with tanshinone I显示文摘 | Joon Ha Park Ok kyu Park Yah Bingchun Ji Hyeon Ahn In Hye Kim Jae-Chul Lee Seung-Hae Kwon Ki-Yeon Yoo Choong Hyun Lee In Koo Hwang Jung Hoon Choi Moo-Ho Won Jong-Dai Kim | 2014 | Chinese Medical Journal2014，，19： | 8 |
| 8 | Ischemic colitis during interferon-ribavirin therapy for chronic hepatitis C:A case report显示文摘Ischemic colitis is a rare complication of interferon administration.Only 9 cases in 6 reports have been described to-date.This report describes a case of ischemic colitis during pegylated interferon and ribavirin treatment for chronic hepatitis C,and includes a review of the relevant literature.A 48-year-old woman was treated with pegylated interferon-2a and ribavirin for chronic hepatitis C,genotype Ib.After 19 wk of treatment,the patient complained of severe afebrile abdominal pain with hematochezia.Vital signs were stable and serum white blood cell count was within the normal range.Abdominal computed tomography showed diffuse colonic wall thickening from the splenic flexure to the proximal sigmoid colon,which is the most vulnerable area for the development of ischemic colitis.Colonoscopy revealed an acute mucosal hyperemic change,with edema and ulcerations extending from the proximal descending colon to the sigmoid colon.Colonic mucosal biopsy revealed acute exudative colitis.Polymerase chain reaction and culture for Mycobacterium tuberculosis were negative and the cultures for cytomegalovirus,Salmonella and Shigella species were negative.After discontinuation of interferon and ribavirin therapy,abdominal pain and hematochezia subsided and,following colonoscopy showed improvement of the mucosal ulcerations.Ischemic colitis cases during interferon therapy in patients with chronic hepatitis C reported so far have all involved the descending colon.Ischemic colitis is a rarely encountered complication of interferon administration in patients with chronic hepatitis C and should be considered when a patient complains of abdominal pain and hematochezia. | Su Jung Baik Tae Hun Kim Kwon Yoo Il Hwan Moon Min-Sun Cho | 2012 | World Journal of Gastroenterology2012，18，31： | 8 |
| 9 | Clinical significance of hepatitis B e antigen level measurement during long-term lamivudine therapy in chronic hepatitis B patients with e antigen positive显示文摘AIM: To determine the changes of quantitative hepatitis B e antigen (HBeAg) that predicts early detection of non- response or breakthrough to long-term lamivudine (LAM) therapy.METHODS: Among HBeAg positive chronic hepatitis B patients who failed to achieve HBeAg seroconversion within 12 mo, we retrospectively analyzed 220 patients who had received LAM more than 24 mo. RESULTS: The mean duration of LAM therapy was 36 (range, 24-72) mo. HBeAg seroconversion after the first 12 mo of LAM therapy was achieved in 53 (24.1%) patients. Viral breakthrough was observed in 105 (47.7%) patients. To find out whether the changing patterns of HBeAg levels can predict the outcome of LAM therapy, we analyzed the reduction rates of HBeAg levels during LAM therapy. Using the decrease more than 90% of pretreatment HBeAg levels, the sensitivity and specificity of response were 96.2% and 70.1%, respectively. Patients were divided into 3 groups according to the reduction patterns of the decrease of quantitative HBeAg: decrescendo, decrescendo-crescendo, no change or fluctuating groups. The optimal time to predict non- response or breakthrough was the first 9 mo of therapy. At 9 mo of therapy, 49 (92.5%) of 53 patients who had achieved HBeAg seroconversion were included in the decrescendo group. On the contrary, in the no change or fluctuating group, only four (7.5%) had achieved HBeAg seroconversion. Among patients who did not show the continuous decrease of HBeAg levels at 9 mo, 95.2% (negative predictive value) failed to achieve HBeAg seroconversion.CONCLUSION: Almost all patients who failed to showa continuous decrease of HBeAg levels at 9 mo of LAM therapy were non-response or breakthrough. Therefore, monitoring changes of HBeAg levels during LAM therapy in HBeAg positive chronic hepatitis B may be valuable for identifying patients who are at high risk of non-response or breakthrough. | Jung Woo Shin Neung Hwa Park Seok Won Jung Byung Chul Kim Sung Ho Kwon Jae Serk Park In Du Jeong Sung-Jo Bang Do Ha Kim | 2006 | World Journal of Gastroenterology2006，12，41： | 7 |
| 10 | Assessing significant fibrosis using imaging-based elastography in chronic hepatitis B patients: Pilot study显示文摘BACKGROUND Accurate detection of significant fibrosis(fibrosis stage 2 or higher on the METAVIR scale)is important especially for chronic hepatitis B(CHB)patients with high viral loads but with normal or mildly elevated alanine aminotransferase(ALT)levels because the presence of significant fibrosis is accepted as the indication for antiviral treatment.Liver biopsy is the reference standard for diagnosing significant fibrosis,but it is an invasive procedure.Consequently,noninvasive imaging-based measurements,such as magnetic resonance elastography(MRE)or two-dimensional shear-wave elastography(2DSWE),have been proposed for the quantitative assessment of liver fibrosis.AIM To explore MRE and 2D-SWE to identify fibrosis stage,and to compare their performance with that of serum-based indices.METHODS The study enrolled 63 treatment-na?ve CHB patients with high viral loads but with normal or mildly elevated ALT levels who underwent liver biopsy before a decision was made to initiate antiviral therapy.MRE and 2D-SWE were performed,and serum-based indices,such as FIB-4 and aspartate transaminase to platelet ratio index(APRI),were calculated.The diagnostic performances of MRE,2D-SWE,FIB-4,and APRI for assessing significant fibrosis(≥F2)and cirrhosis(F4)were evaluated with liver histology as the reference standard,using receiver operating characteristic analyses.RESULTS The liver fibrosis stage was F0/F1 in 19,F2 in 14,F3 in 14,and F4 in 16 patients,respectively.MRE significantly discriminated F2 from F0/1(P=0.022),whereas 2D-SWE showed a broad overlap in distinguishing those stages.MRE showed a higher correlation coefficient value with fibrosis stage than 2D-SWE with fibrosis stage(0.869 vs 0.649,Spearman test;P<0.001).Multivariate linear regression analyses showed that fibrosis stage was the only factor affecting the values of MRE(P<0.001),whereas body mass index(P=0.042)and fibrosis stage(P<0.001)were independent factors affecting 2D-SWE values.MRE performance for diagnosing significant fibrosis was better[area under the curve(AUC)=0.906,positive predictive value(PPV)97.3%,negative predictive value(NPV)69.2%]than that of FIB-4(AUC=0.697,P=0.002)and APRI(AUC=0.717,P=0.010),whereas the performance of 2D-SWE(AUC=0.843,PPV 86%,NPV 65%)was not significantly different from that of FIB-4 or APRI.CONCLUSION Compared to SWE,MRE might be more precise non-invasive assessment for depicting significant fibrosis and for making-decision to initiate antiviral-therapy in treatment-na?ve CHB patients with normal or mildly-elevated ALT levels. | Hee Sun Park Won Hyeok Choe Hye Seung Han Mi Hye Yu Young Jun Kim Sung Il Jung Jeong Han Kim So Young Kwon | 2019 | World Journal of Gastroenterology2019，25，25： | 7 |
| 11 | Giant choledocholithiasis treated by mechanical lithotripsy using a gastric bezoar basket显示文摘Mechanical lithotripsy(ML) is usually considered as a standard treatment option for large bile duct stones.However,it is impossible to retrieve oversized stones because the conventional lithotripsy basket may not be able to grasp the stone.However,there is no established endoscopic extraction method for such giant stone removal.We describe a case of successful extraction of a 4-cm large stone using a gastric bezoar basket.A 78-year-old woman had suffered from upper abdominal pain for 20 d.Contrast-enhanced computed tomogram revealed a 4-cm single stone in the distal common bile duct(CBD).Endoscopic stone retraction was decided upon and endoscopic papillary balloon dilation was performed using a large balloon.An attempt to capture the stone using a standard lithotripsy basket failed due to the large stone size.Subsequently,we used a gastric bezoar basket to successfully capturethe stone.The stone was fragmented into small pieces and extracted.The stone was completely removed after two sessions of endoscopic retrograde cholangiopancreatography;each of which took 30 min.No complications occurred during or after the procedure.The patient was fully recovered and discharged on day 11 of hospitalization.ML using a gastric bezoar basket is a safe and effective retrieval method in select cases,and is considered as an alternative nonoperative option for the management of difficult CBD stones. | Hyun Jung Chung Seok Jeong Don Haeng Lee Jung Il Lee Jin-Woo Lee Byoung Wook Bang Kye Sook Kwon Hyung Kil Kim Yong Woon Shin Young Soo Kim | 2012 | World Journal of Gastroenterology2012，18，25： | 7 |
| 12 | Comparison of two Nd:YAG laser posterior capsulotomy: cruciate pattern vs circular pattern with vitreous strand cutting显示文摘AIM: To investigate the effects and safety of neodymium: yttrium-aluminium-garnet(Nd:YAG) laser posterior capsulotomy with vitreous strand cuttingMETHODS: A total of 40 eyes of 37 patients with symptomatic posterior capsular opacity(PCO) were included in this prospective randomized study and were randomly subjected to either cruciate pattern or round pattern Nd:YAG posterior capsulotomy with vitreous strand cutting(modified round pattern). The best corrected visual acuity(BCVA), intraocular pressure(IOP), refractive error, endothelial cell count(ECC), anterior segment parameters, including anterior chamber depth(ACD) and anterior chamber angle(ACA) were measured before and 1 mo after the laser posterior capsulotomy. RESULTS: In both groups, the BCVA improved significantly(P<0.001 for the modified round pattern group, P=0.001 for the cruciate pattern group); the IOP and ECC did not significantly change. The ACD significantly decreased(P<0.001 for both) and the ACA significantly increased(P=0.001 for the modified round pattern group and P=0.034 for the cruciate group). The extent of changes in these parameters was not significantly different between the groups.CONCLUSION: Modified round pattern Nd:YAG laser posterior capsulotomy is an effective and safe method for the treatment of PCO. This method significantly changes the ACD and ACA, but the change in refraction is not significant. Modified round pattern Nd:YAG laser posterior capsulotomy can be considered a good alternative procedure in patients with symptomatic PCO. | Jin-Soo Kim Jung Yeol Choi Ji-Won Kwon Won Ryang Wee Young Keun Han | 2018 | International Journal of Ophthalmology(English edition)2018，11，2： | 6 |
| 13 | Tuning the base properties of Mg–Al hydrotalcite catalysts using their memory effect显示文摘Herein,the relationship between the structure and base properties of Mg–Al hydrotalcite catalysts was comprehensively investigated in relation to heat treatment and rehydration processes,which are well known as memory effects of hydrotalcite.The structure of Mg–Al hydrotalcites changed from layered double hydroxide(LDH)to mixed metal oxide and subsequently to a spinel structure during heat treatment,and it was returned from mixed metal oxide to a LDH structure by rehydration.Based on various characterizations,we successfully proposed a detailed mechanism of memory effect.We also confirmed that the Mg–Al hydrotalcites had weak or strong base sites and that their base properties could be systematically tuned by heat treatment and rehydration.The prepared Mg–Al hydrotalcites were applied to a model reaction,isomerization of glucose to fructose,as base catalysts.Among the catalysts tested,the rehydrated Mg–Al hydrotalcite efficiently produced fructose due to its appropriate base and structure properties.We finally concluded that the base sites of Mg–Al hydrotalcites can be designed as desired by heat treatment and rehydration.Moreover,through systematic design of the base sites of Mg–Al hydrotalcites,these can be promising catalysts for various heterogeneous reactions over base catalysts,giving excellent catalytic performances. | Dahye Kwon Ji Yeon Kang Suna An Inchan Yang Ji Chul Jung | 2020 | Journal of Energy Chemistry2020，29，7： | 6 |
| 14 | Dexamethasone inhibits hypoxia-induced epithelial-mesenchymal transition in colon cancer显示文摘AIM:To elucidate the effects of dexamethasone on hypoxia-induced epithelial-to-mesenchymal transition(EMT) in colon cancer.METHODS:Human colon cancer HCT116 and HT29 cells were exposed to normoxic(21%) and hypoxic(1%) conditions. First,the effect of dexamethasone on cell viability was examined by MTT cell proliferation assay. In order to measure the expression levels of EMT markers(Snail,Slug,Twist,E-cadherin,and integrin αVβ6) and hypoxia-related genes [Hypoxia-inducible factor-1α(HIF-1α) and vascular endothelial growth factor(VEGF)] by dexamethasone,quantitative real-time polymerase chain reaction and western blot analysis were performed. Furthermore,the morphological changes of colon cancer cells and the expression pattern of E-cadherin by dexamethasone were detected through immunocytochemistry. Finally,the effects of dexamethasone on the invasiveness and migration of colon cancer cells were elucidated using matrigel invasion,migration,and wound healing migration assays.RESULTS:Under hypoxia,dexamethasone treatment inhibited HIF-1α protein level and its downstream gene,VEGF m RNA level in the colon cancer cell lines,HCT116 and HT29. In addition,the presence of dexamethasone down-regulated the m RNA levels of hypoxia-induced Snail,Slug,and Twist,all transcriptional factors of EMT,as well as hypoxia-induced integrin αVβ6 protein level,a well-known EMT marker for colon cancer cells. Furthermore,reduced E-cadherin in hypoxic condition was found to be recoverable by treating with dexamethasone in both colon cancer cell lines. Similarly,under hypoxic conditions,dexamethasone restored the growth pattern and morphological phenotype reminiscent of colon cancer cells grown under normoxic conditions; dexamethasone blocked the migration and invasion of both colorectal cancer cell lines in hypoxia.CONCLUSION:Our study suggested that dexamethasone has inhibitory effects on cell migration and invasion by suppressing EMT of colon cancer cell lines in hypoxic condition. | Jung Ho Kim You-Jin Hwang Sang Hoon Han Young Eun Lee Saerom Kim Yoon Jae Kim Jae Hee Cho Kwang An Kwon Ju Hyun Kim Se-Hee Kim | 2015 | World Journal of Gastroenterology2015，21，34： | 5 |
| 15 | Classification of Precipitation Types Using Fall Velocity–Diameter Relationships from 2D-Video Distrometer Measurements显示文摘Fall velocity–diameter relationships for four different snowflake types(dendrite,plate,needle,and graupel) were investigated in northeastern South Korea,and a new algorithm for classifying hydrometeors is proposed for distrometric measurements based on the new relationships.Falling ice crystals(approximately 40 000 particles) were measured with a two-dimensional video disdrometer(2DVD) during a winter experiment from 15 January to 9 April 2010.The fall velocity–diameter relationships were derived for the four types of snowflakes based on manual classification by experts using snow photos and 2DVD measurements:the coefficients(exponents) for different snowflake types were 0.82(0.24) for dendrite,0.74(0.35) for plate,1.03(0.71) for needle,and 1.30(0.94) for graupel,respectively.These new relationships established in the present study(PS) were compared with those from two previous studies.Hydrometeor types were classified with the derived fall velocity–diameter relationships,and the classification algorithm was evaluated using 3 × 3 contingency tables for one rain–snow transition event and three snowfall events.The algorithm showed good performance for the transition event:the critical success indices(CSIs) were 0.89,0.61 and 0.71 for snow,wet-snow and rain,respectively.For snow events,the algorithm performance for dendrite and plate(CSIs = 1.0 and 1.0,respectively) was better than for needle and graupel(CSIs = 0.67 and 0.50,respectively). | Jeong-Eun LEE Sung-Hwa JUNG Hong-Mok PARK Soohyun KWON Pay-Liam LIN Gyu Won LEE | 2015 | Advances in Atmospheric Sciences2015，32，9： | 5 |
| 16 | Surgical failure after colonic stenting as a bridge to surgery显示文摘AIM: To identify risk factors for surgical failure after colonic stenting as a bridge to surgery in left-sided malignant colonic obstruction.METHODS: The medical records of patients who underwent stent insertion for malignant colonic obstruction between February 2004 and August 2012 were retrospectively reviewed. Patients with malignant colonic obstruction had overt clinical symptoms and signs of obstruction. Malignant colonic obstruction was diagnosed by computed tomography and colonoscopy. A total of 181 patients underwent stent insertion during the study period; of these, 68 consecutive patientswere included in our study when they had undergone stent placement as a bridge to surgery in acute leftsided malignant colonic obstruction due to primary colon cancer.RESULTS: Out of 68 patients, forty-eight(70.6%) were male, and the mean age was 64.9(range, 38-89) years. The technical and clinical success rates were 97.1%(66/68) and 88.2%(60/68), respectively. Overall, 85.3%(58/68) of patients underwent primary tumor resection and primary anastomosis. Surgically successful preoperative colonic stenting was achieved in 77.9%(53/68). The mean duration, defined as the time between the SEMS attempt and surgery, was 11.3 d(range, 0-26 d). The mean hospital stay after surgery was 12.5 d(range, 6-55 d). On multivariate analysis, the use of multiple self-expanding metal stents(OR = 28.872; 95%CI: 1.939-429.956, P = 0.015) was a significant independent risk factor for surgical failure of preoperative stenting as a bridge to surgery. Morbidity and mortality rates in surgery after stent insertion were 4.4%(3/68) and 1.5%(1/68), respectively.CONCLUSION: The use of multiple self-expanding metal stents appears to be a risk factor for surgical failure. | Jung Ho Kim Kwang An Kwon Jong Joon Lee Won-Suk Lee Jeong-Heum Baek Yoon Jae Kim Jun-Won Chung Kyoung Oh Kim Dong Kyun Park Ju Hyun Kim | 2014 | World Journal of Gastroenterology2014，20，33： | 5 |
| 17 | Expression of micro RNAs in fibroblast of pterygium显示文摘AIM:To screen microRNAs(miRNAs) and set up target miRNAs in pterygium.METHODS:Primary fibroblasts were isolated from pterygium and Tenon's capsule and cultured.Immunocytochemical analysis and Western blotting were performed to confirm the culture of fibroblasts.In all,1733 miRNAs were screened in the first step by using GeneChip^(?) miRNA3.0 Array.Specific miRNAs involved in the pathogenesis of pterygium were subsequently determined using the following criteria:1) high reproducibility in a repetitive test;2) base log value of >7.0 for both control and pterygial fibroblasts;and 3) log ratio of >1.0 between pterygial fibroblasts and control fibroblasts.RESULTS:Primary screening showed that 887/1733 miRNAs were up-regulated and 846/1733 miRNAs were down-regulated in pterygial fibroblasts compared with those in control fibroblasts.Of the 1733 miRNAs screened,4 miRNAs,namely,miRNA-143a-3p,miRNA-181a-2-3p,miRNA-377-5p and miRNA-411a-5p,met the above-mentioned criteria.Primary screening showed that these 4 miRNAs were up-regulated in pterygial fibroblasts compared with control fibroblasts and that miRNA-143a-3p had the highest mean ratio compared with the miRNAs in control fibroblasts.CONCLUSION:miRNA-143a-3p,miRNA-181a-2-3p,miRNA-377-5p and miRNA-411a-5p are up-regulated in pterygial fibroblasts compared with control fibroblasts,suggesting their involvement in the pathogenesis of pterygium. | Joon H.Lee Sun-Ah Jung Young-A Kwon Jea-Lim Chung Ungsoo Samuel Kim | 2016 | International Journal of Ophthalmology(English edition)2016，9，7： | 5 |
| 18 | Decellularized sciatic nerve matrix as a biodegradable conduit for peripheral nerve regeneration显示文摘The use of autologous nerve grafts remains the gold standard for treating nerve defects, but current nerve repair techniques are limited by donor tissue availability and morbidity associated with tissue loss. Recently, the use of conduits in nerve injury repair, made possible by tissue engineering, has shown therapeutic potential. We manufactured a biodegradable, collagen-based nerve conduit containing decellularized sciatic nerve matrix and compared this with a silicone conduit for peripheral nerve regeneration using a rat model. The collagen-based conduit contains nerve growth factor, brain-derived neurotrophic factor, and laminin, as demonstrated by enzyme-linked immunosorbent assay. Scanning electron microscopy images showed that the collagen-based conduit had an outer wall to prevent scar tissue infiltration and a porous inner structure to allow axonal growth. Rats that were implanted with the collagen-based conduit to bridge a sciatic nerve defect experienced significantly improved motor and sensory nerve functions and greatly enhanced nerve regeneration compared with rats in the sham control group and the silicone conduit group. Our results suggest that the biodegradable collagen-based nerve conduit is more effective for peripheral nerve regeneration than the silicone conduit. | Jongbae Choi Jun Ho Kim Ji Wook Jang Hyun Jung Kim Sung Hoon Choi Sung Won Kwon | 2018 | Neural Regeneration Research2018，13，10： | 5 |
| 19 | Characterization of particulate matter from diesel passenger cars tested on chassis dynamometers显示文摘Emission characterization of particle number as well as particle mass from three diesel passenger cars equipped with diesel particulate filter(DPF), diesel oxidation catalyst(DOC)and exhaust gas recirculation(EGR) under the vehicle driving cycles and regulatory cycle.Total particle number emissions(PNEs) decreased gradually during speed-up of vehicle from 17.3 to 97.3 km/hr. As the average vehicle speed increases, the size-segregated peak of particle number concentration shifts to smaller size ranges of particles. The correlation analysis with various particulate components such as particle number concentration(PNC),ultrafine particle number concentration(UFPNC) and particulate matter(PM) mass was conducted to compare gaseous compounds(CO, CO_2, HC and NOx). The UFPNC and PM were not only emitted highly in Seoul during severe traffic jam conditions, but also have good correlation with hydrocarbons and NOxinfluencing high potential on secondary aerosol generation. The effect of the dilution temperature on total PNC under the New European Driving Cycle(NEDC), was slightly higher than the dilution ratio. In addition, the nuclei mode(DP: ≤ 13 nm) was confirmed to be more sensitive to the dilution temperature rather than other particle size ranges. Comparison with particle composition between vehicle speed cycles and regulatory cycle showed that sulfate was slightly increased at regulatory cycle, while other components were relatively similar. During cold start test, semivolatile nucleation particles were increased due to effect of cold environment. Research on particle formation dependent on dilution conditions of diesel passenger cars under the NEDC is important to verify impact on vehicular traffic and secondary aerosol formation in Seoul. | Sungwoon Jung Jaehyun Lim Sangil Kwon Sangwoo Jeon Jeongsoo Kim Jongtae Lee Sunmoon Kim | 2017 | Journal of Environmental Sciences2017，29，4： | 4 |
| 20 | 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 |
您所在的机构暂未开通此部分的功能，请联系管理员