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| 1 | Effect of itopride, a new prokinetic, in patients with mild GERD: A pilot study显示文摘AIM: Itopride is a newly developed prokinetic agent, which enhances gastric motility through both antidopaminergic and anti-acetylcholinesterasic actions. The importance of esophageal motor dysfunction in the pathogenesis of gastro-esophageal reflux disease (GERD) makes it interesting to examine the effect of itopride on esophageal acid exposure.METHODS: The effect of itopride on esophageal acid reflux variables for 24 h was studied in 26 patients with GERD symptoms, pre-entry total acid exposure time (pH<4) of more than 5% and mild esophagitis (SavaryMiller grades Ⅰ, Ⅱ) proven by endoscopy. Ambulatory 24-h pH-metry and symptom assessment were performed after treatments with 150 or 300 mg itopride thrice a day (t.i.d.) for 30 d in random order, using an open label method.For evaluating the safety of itopride, blood biochemical laboratory test was performed and the serum prolactin level was also examined before and after treatment.RESULTS: Total symptom score was significantly decreased after treatment in 150- or 300-mg group. Itopride 300mg was significantly effective than 150 mg on decreasing the total per cent time with pH<4, total time with pH<4and DeMeester score. No serious adverse effects were observed with administration of itopride in both groups.CONCLUSION: Itopride 100 mg t.i.d, is effective on decreasing pathologic reflux in patient with GERD and therefore it has the potential to be effective in the treatment of this disease. | Yong Sung Kim Tae Hyeon Kim Chang Soo Choi Young Woo Shon Sang Wook Kim Geom Seog Seo Yong Ho Nah Myung Gyu Choi Suck Chei Choi | 2005 | World Journal of Gastroenterology2005，11，27： | 15 |
| 2 | Risk prediction platform for pancreatic fistula after pancreatoduodenectomy using artificial intelligence显示文摘BACKGROUND Despite advancements in operative technique and improvements in postoperative managements,postoperative pancreatic fistula(POPF)is a life-threatening complication following pancreatoduodenectomy(PD).There are some reports to predict POPF preoperatively or intraoperatively,but the accuracy of those is questionable.Artificial intelligence(AI)technology is being actively used in the medical field,but few studies have reported applying it to outcomes after PD.AIM To develop a risk prediction platform for POPF using an AI model.METHODS Medical records were reviewed from 1769 patients at Samsung Medical Center who underwent PD from 2007 to 2016.A total of 38 variables were inserted into AI-driven algorithms.The algorithms tested to make the risk prediction platform were random forest(RF)and a neural network(NN)with or without recursive feature elimination(RFE).The median imputation method was used for missing values.The area under the curve(AUC)was calculated to examine the discriminative power of algorithm for POPF prediction.RESULTS The number of POPFs was 221(12.5%)according to the International Study Group of Pancreatic Fistula definition 2016.After median imputation,AUCs using 38 variables were 0.68±0.02 with RF and 0.71±0.02 with NN.The maximal AUC using NN with RFE was 0.74.Sixteen risk factors for POPF were identified by AI algorithm:Pancreatic duct diameter,body mass index,preoperative serum albumin,lipase level,amount of intraoperative fluid infusion,age,platelet count,extrapancreatic location of tumor,combined venous resection,co-existing pancreatitis,neoadjuvant radiotherapy,American Society of Anesthesiologists’score,sex,soft texture of the pancreas,underlying heart disease,and preoperative endoscopic biliary decompression.We developed a web-based POPF prediction platform,and this application is freely available at http://popfrisk.smchbp.org.CONCLUSION This study is the first to predict POPF with multiple risk factors using AI.This platform is reliable(AUC 0.74),so it could be used to select patients who need especially intense therapy and to preoperatively establish an effective treatment strategy. | In Woong Han Kyeongwon Cho Youngju Ryu Sang Hyun Shin Jin Seok Heo Dong Wook Choi Myung Jin Chung Oh Chul Kwon Baek Hwan Cho | 2020 | World Journal of Gastroenterology2020，26，30： | 12 |
| 3 | Evaluation of esophageal function in patients with esophageal motor abnormalities using multichannel intraluminal impedance esophageal manometry显示文摘AIM: To evaluate the functional aspect of esophageal motility in healthy subjects and in patients who were referred for esophageal function testing using multichannel intraluminal impedance-esophageal manometry (MII-EM), and to assess the clinical utility of MII-EM. METHODS: From September 2003 to January 2004, we performed the MII-EM on healthy volunteers and all the patients who were referred for esophageal function testing. Each patient received 10 liquid and 10 viscous swallows. We analyzed the results, the impedance and the manometric findings. Some of the subjects had additional ambulatory 24-h pH study performed to diagnose gastroesophageal reflux disease (GERD). RESULTS: Among 89 studied subjects, the MII-EM findings showed normal esophageal motility in 50 (56.17%), ineffective esophageal motility (IEM) in 17 (19.10%), nutcracker esophagus in 7 (7.86%), achalasia in 4 (4.49%), and scleroderma esophagus in 11 (12.35%) cases. The completeness and the speed of bolus transit were in the order of nutcracker esophagus, normal manometry and IEM. Some of the swallows showing normal manometry and IEM had incomplete transit. In the achalasia and scleroderma esophagus, almost all the swallows had incomplete transit. The body amplitudes were higher for the swallows with complete transit than for the swallows with incomplete transit. There was not a significant difference in the manometric and impedance findings between the subjects with and without GERD. CONCLUSION: MII-EM is a useful tool in assessing theesophageal function in the patients having esophageal motility abnormality. The primary factors influencing the bolus transit are the amplitude of the esophageal body and normal peristalsis. | Yu Kyung Cho Myung-Gyu Choi Jae Myung Park Jung Hwan Oh Chang Nyol Paik Joon Wook Lee In Seok Lee Sang Woo Kim In-Sik Chung | 2006 | World Journal of Gastroenterology2006，12，39： | 8 |
| 4 | Efficacy of hepatic arterial infusion chemotherapy in advanced hepatocellular carcinoma显示文摘AIM:To investigate the efficacy of hepatic arterial infusion chemotherapy(HAIC) using floxuridine(FUDR) in patients with advanced hepatocellular carcinoma(HCC) confined to the liver.METHODS:Thirty-four patients who had advanced HCC with unresectability or unsuccessful previous therapy in the absence of extrahepatic metastasis were treated with intra-arterial FUDR chemotherapy at ourhospital between March 2005 and May 2008.Among the 34 patients,9 patients were classified as Child class C,and 18 patients had portal vein tumor thrombus(PVTT).One course of chemotherapy consisted of continuous infusion of FUDR(0.3 mg/kg during day 1-14) and dexamethasone(10 mg on day 1,4,7 and 11),and this treatment was repeated every 28 d.RESULTS:Two patients(5.9%) displayed a complete response,and 12 patients(35.3%) had a partial response.The tumor control rate was 61.8%.The median overall survival times were 15.3 mo,12.4 mo and 4.3 mo for the patients who were classified as Child class A,Child class B and Child class C,respectively(P = 0.0392).The progression-free survival was 12.9 mo,7.7 mo and 2.6 mo for the patients who were classified as Child class A,Child class B and Child class C,respectively(P = 0.0443).The cumulative survival differed significantly according to the Child-Pugh classification and the presence of PVTT.In addition to hepatic reserve capacity and PVTT,the extent of HCC was an independent factor in determining a poor prognosis.The most common adverse reactions to HAIC were mucositis,diarrhea and peptic ulcer disease,but most of these complications were improved by medical treatment and/or a delay of HAIC.CONCLUSION:The present study demonstrates that intra-arterial FUDR chemotherapy is a safe and effective treatment for advanced HCC that is recalcitrant to other therapeutic modalities,even in patients with advanced cirrhosis. | Yang Hyun Baek Kyoung Tae Kim Sung Wook Lee Jin Sook Jeong Byeong Ho Park Kyung Jin Nam Jin Han Cho Young Hoon Kim Young Hoon Roh Hyung Sik Lee Young Min Choi Sang Young Han | 2012 | World Journal of Gastroenterology2012，18，26： | 6 |
| 5 | Is the AIM65 score useful in predicting outcomes in peptic ulcer bleeding?显示文摘AIM:To evaluate the applicability of AIMS65 scores in predicting outcomes of peptic ulcer bleeding.METHODS:This was a retrospective study in a single center between January 2006 and December 2011.We enrolled 522 patients with upper gastrointestinal haemorrhage who visited the emergency room.Highrisk patients were regarded as those who had rebleeding within 30 d from the first endoscopy as well as those who died within 30 d of visiting the Emergency room.A total of 149 patients with peptic ulcer bleeding were analysed,and the AIMS65 score was used to retrospectively predict the high-risk patients.RESULTS:A total of 149 patients with peptic ulcer bleeding were analysed.The poor outcome group comprised 28 patients[male:23(82.1%)vs female:5(10.7%)]while the good outcome group included 121patients[male:93(76.9%)vs female:28(23.1%)].The mean age in each group was not significantly different.The mean serum albumin levels in the poor outcome group were slightly lower than those in the good outcome group(P=0.072).For the prediction of poor outcome,the AIMS65 score had a sensitivity of35.5%(95%CI:27.0-44.8)and a specificity of 82.1%(95%CI:63.1-93.9)at a score of 0.The AIMS65 score was insufficient for predicting outcomes in peptic ulcer bleeding(area under curve=0.571;95%CI:0.49-0.65).CONCLUSION:The AIMS65 score may therefore not be suitable for predicting clinical outcomes in peptic ulcer bleeding.Low albumin levels may be a risk factor associated with high mortality in peptic ulcer bleeding. | Sung Hoon Jung Jung Hwan Oh Hye Yeon Lee Joon Won Jeong Se Eun Go Chan Ran You Eun Jung Jeon Sang Wook Choi | 2014 | World Journal of Gastroenterology2014，20，7： | 6 |
| 6 | Assessment of scoring systems for acute-on-chronic liver failure at predicting short-term mortality in patients with alcoholic hepatitis显示文摘AIM To assess the performance of proposed scores specific for acute-on-chronic liver failure in predicting shortterm mortality among patients with alcoholic hepatitis.METHODS We retrospectively collected data from 264 patients with clinically diagnosed alcoholic hepatitis from January to December 2013 at 21 academic hospitals in Korea. The performance for predicting short-term mortality was calculated for Chronic Liver FailureSequential Organ Failure Assessment(CLIF-SOFA), CLIF Consortium Organ Failure score(CLIF-C OFs), Maddrey'sdiscriminant function(DF), age, bilirubin, international normalized ratio and creatinine score(ABIC), Glasgow Alcoholic Hepatitis Score(GAHS), model for end-stage liver disease(MELD), and MELD-Na.RESULTS Of 264 patients, 32(12%) patients died within 28 d. The area under receiver operating characteristic curve of CLIF-SOFA, CLIF-C OFs, DF, ABIC, GAHS, MELD, and MELD-Na was 0.86(0.81-0.90), 0.89(0.84-0.92), 0.79(0.74-0.84), 0.78(0.72-0.83), 0.81(0.76-0.86), 0.83(0.78-0.88), and 0.83(0.78-0.88), respectively, for 28-d mortality. The performance of CLIF-SOFA had no statistically significant differences for 28-d mortality. The performance of CLIF-C OFs was superior to that of DF, ABIC, and GAHS, while comparable to that of MELD and MELD-Na in predicting 28-d mortality. A CLIF-SOFA score of 8 had 78.1% sensitivity and 79.7% specificity, and CLIF-C OFs of 10 had 68.8% sensitivity and 91.4% specificity for predicting 28-d mortality.CONCLUSION CLIF-SOFA and CLIF-C OF scores performed well, with comparable predictive ability for short-term mortality compared to the commonly used scoring systems in patients with alcoholic hepatitis. | Hee Yeon Kim Chang Wook Kim Tae Yeob Kim Do Seon Song Dong Hyun Sinn Eileen L Yoon Young Kul Jung Ki Tae Suk Sang Soo Lee Chang Hyeong Lee Tae Hun Kim Jeong Han Kim Hyung Joon Yim Sung Eun Kim Soon Koo Baik Byung Seok Lee Jae Young Jang Young Seok Kim Sang Gyune Kim Jin Mo Yang Joo Hyun Sohn Heon Ju Lee Seung Ha Park Eun Hee Choi Dong Joon Kim Korean Acute-on-Chronic Liver Failure Study Group | 2016 | World Journal of Gastroenterology2016，22，41： | 5 |
| 7 | Efficacy of Pegylated Interferon Monotherapy versus Sequential Therapy of Entecavir and Pegylated Interferon in Hepatitis B e Antigen-Positive Hepatitis B Patients: A Randomized, Multicenter, Phase IIIb Open-Label Study (POTENT Study)显示文摘 | Dae Won Jun Sang Bong Ahn Tae Yeob Kim Joo Hyun Sohn Sang Gyune Kim Se Whan Lee Byung Ho Kim Dong Joon Kim Ja Kyung Kim Hyoung Su Kim Seong Gyu Hwang Won Choong Choi Won Young Tak Heon Ju Lee Ki Tae Yoon Byung Cheol Yun Sung Wook Lee Soon Koo Baik Seung Ha Park Ji Won Park Sol Ji Park Ji Sung Lee | 2018 | Chinese Medical Journal2018，，14： | 5 |
| 8 | 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 |
| 9 | Carcinoma of the middle bile duct:Is bile duct segmental resection appropriate?显示文摘AIM:To compare survival between bile duct segmental resection(BDSR)and pancreaticoduodenectomy(PD) for treating distal bile duct cancers. METHODS:Retrospective analysis was conducted for 45 patients in a BDSR group and for 149 patients in a PD group. RESULTS:The T-stage(P<0.001),lymph node invasion (P=0.010)and tumor differentiation(P=0.005)were significant prognostic factors in the BDSR group.The 3-and 5-year overall survival rates for the BDSR group and PD group were 51.7%and 36.6%,respectively and 46.0%and 38.1%,respectively(P=0.099).The BDSR group and PD group did not show any significant difference in survival when this was adjusted for the TNM stage.The 3-and 5-year survival rates were: stageⅠa[BDSR(100.0%and 100.0%)vs PD(76.9% and 68.4%)(P=0.226)];stageⅠb[BDSR(55.8% and 32.6%)vs PD(59.3%and 59.3%)(P=0.942)]; stageⅡb[BDSR(19.2%and 19.2%)vs PD(31.9%and 14.2%)(P=0.669)]. CONCLUSION:BDSR can be justified as an alternative radical operation for patients with middle bile duct inselected patients with no adjacent organ invasion and resection margin is negative. | Hyung Geun Lee Sang Hoon Lee Dong Do Yoo Kwang Yeol Paik Jin Seok Heo Seong Ho Choi Dong Wook Choi | 2009 | World Journal of Gastroenterology2009，15，47： | 3 |
| 10 | Association Between Metabolic Syndrome and Helicobacter pylori Infection Diagnosed by Histologic Status and Serological Status显示文摘 | Dong Wook Shin Hyuk Tae Kwon Jung Min Kang Jin Ho Park Ho Chun Choi Min Seon Park Sang Min Park Ki Young Son BeLong Cho | 2012 | Journal of Clinical Gastroenterology2012，，10： | 3 |
| 11 | Inhibition of matrix metalloproteinases expression in human dental pulp cells by all-trans retinoic acid显示文摘All-trans retinoic acid(ATRA) inhibits matrix metalloproteinase(MMP)-2 and MMP-9 in synovial fibroblasts, skin fibroblasts,bronchoalveolar lavage cells and cancer cells, but activates MMP-9 in neuroblast and leukemia cells. Very little is known regarding whether ATRA can activate or inhibit MMPs in human dental pulp cells(HDPCs). The purpose of this study was to determine the effects of ATRA on the production and secretion of MMP-2 and-9 in HDPCs. The productions and messenger RNA(mRNA) expressions of MMP-2 and-9 were accessed by gelatin zymography and real-time polymerase chain reaction(PCR), respectively. ATRA was found to decrease MMP-2 level in a dose-dependent manner. Significant reduction in MMP-2 mRNA expression was also observed in HDPCs treated with 25 mmol?L21ATRA. However, HDPCs treated with ATRA had no effect on the pattern of MMP-9 produced or secreted in either cell extracts or conditioned medium fractions. Taken together, ATRA had an inhibitory effect on MMP-2 expression in HDPCs,which suggests that ATRA could be a candidate as a medicament which could control the inflammation of pulp tissue in vital pulp therapy and regenerative endodontics. | Jin Man Kim Sang Wook Kang Su-Mi Shin Duck Su Kim Kyong-Kyu Choi Eun-Cheol Kim Sun-Young Kim | 2014 | International Journal of Oral Science2014，6，3： | 3 |
| 12 | Nonlinear process monitoring using kernel principal component analysis显示文摘 | Jong-Min Lee ChangKyoo Yoo Sang Wook Choi Peter A. Vanrolleghem In-Beum Lee | 2003 | Chemical Engineering Science2003，，1： | 3 |
| 13 | A Prospective Randomized Controlled Study Comparing Outcomes of Standard Resection and Extended Resection, Including Dissection of the Nerve Plexus and Various Lymph Nodes, in Patients With Pancreatic Head Cancer显示文摘 | Jin-Young Jang Mee Joo Kang Jin Seok Heo Seong Ho Choi Dong Wook Choi Sang Jae Park Sung-Sik Han Dong Sup Yoon Hee Chul Yu Koo Jeong Kang Sang Geol Kim Sun-Whe Kim | 2014 | Annals of Surgery2014，，4： | 2 |
| 14 | Fault detection and identification of nonlinear processes based on kernel PCA显示文摘 | Sang Wook Choi Changkyu Lee Jong-Min Lee Jin Hyun Park In-Beum Lee | 2004 | Chemometrics and Intelligent Laboratory Systems2004，，1： | 2 |
| 15 | Occult gastric cancer with distant metastasis proven by random gastric biopsy显示文摘Krukenberg tumor, a rare metastatic ovarian tumor arising from gastrointestinal adenocarcinoma mainly, tends to occur in premenopausal females. Finding the origin of a Krukenberg tumor is crucial for determining prognosis. In Eastern countries, the most common origin of Krukenberg tumor is stomach cancer, which is generally diagnosed via endoscopic biopsy to investigate an abnormal mucosal lesion. Here, we describe a case of huge adnexal mass in a 33-year-old woman who presented with abdominal distension. Two independent endoscopic examinations performed by experts in two tertiary university hospitals revealed no abnormal mucosal lesion. The patient was diagnosed with a Krukenberg tumor according to findings from random endoscopic biopsies taken from normal-looking gastric mucosa in our hospital. It is very rare to be diagnosed via a random biopsy in cases where three well-trained endoscopists had not found any mucosal lesion previously. Thus, in this case, random biopsy was helpful in finding the origin of a Krukenberg tumor. | Sang Hyuk Lee Kyu-Hyoung Lim Seo-Young Song Hui-Young Lee Sung Chul Park Chang Don Kang Sung Joon Lee Dong Wook Choi Sung Bae Park Young-Joon Ryu | 2016 | World Journal of Gastroenterology2016，22，16： | 2 |
| 16 | Sensor fault identification based on time-lagged PCA in dynamic processes显示文摘 | ChangKyu Lee Sang Wook Choi and In-Beum Lee | 2004 | Chemometrics and Intelligent Laboratory Systems2004，70，： | 1 |
| 17 | Cat/dposid$,a evtnpound isolated from cata/pa ovata, attenuates indue- tionb of intestinal epithelial proinflammatory gene expression and reduces the severity of trinitrobenzene sulfonie Aeid -induced colitis in mice 显示文摘 | KIM SANG - WOOK CHOI SUCK - CHEI CHOI EUN - YOUNG | 2004 | Inflammatory Bowel Diseases2004，10，5： | 1 |
| 18 | Analysis of a Broadband Q Band Folded Waveguide Traveling Wave Tube显示文摘 | Young Ho Na Sang Wook Chung Jin Joo Choi | 2002 | IEEE Trans On Plasma Science2002，30，3： | 1 |
| 19 | Nonlinear process monitoring using kernel principal component analysis显示文摘 | Jong-Min Lee ChangKyoo Yoo Sang Wook Choi Peter A. Vanrolleghem In-Beum Lee | 2003 | Chemical Engineering Science2003，，1： | 1 |
| 20 | Direct Synthesis of Molybdenum Phosphide Nanorods on Silicon Using Graphene at the Heterointerface for Efficient Photoelectrochemical Water Reduction显示文摘Transition metal phosphides(TMPs)and transition metal dichalcogenides(TMDs)have been widely investigated as photoelectrochemical(PEC)catalysts for hydrogen evolution reaction(HER).Using high-temperature processes to get crystallized compounds with large-area uniformity,it is still challenging to directly synthesize these catalysts on silicon photocathodes due to chemical incompatibility at the heterointerface.Here,a graphene interlayer is applied between p-Si and MoP nanorods to enable fully engineered interfaces without forming a metallic secondary compound that absorbs a parasitic light and provides an inefficient electron path for hydrogen evolution.Furthermore,the graphene facilitates the photogenerated electrons to rapidly transfer by creating Mo-O-C covalent bondings and energetically favorable band bending.With a bridging role of graphene,numerous active sites and anti-reflectance of MoP nanorods lead to significantly improved PEC-HER performance with a high photocurrent density of 21.8 mA cm−2 at 0 V versus RHE and high stability.Besides,low dependence on pH and temperature is observed with MoP nanorods incorporated photocathodes,which is desirable for practical use as a part of PEC cells.These results indicate that the direct synthesis of TMPs and TMDs enabled by graphene interlayer is a new promising way to fabricate Si-based photocathodes with high-quality interfaces and superior HER performance. | Sang Eon Jun Seokhoon Choi Shinyoung Choi Tae Hyung Lee Changyeon Kim Jin Wook Yang Woon‑Oh Choe In‑Hyuk Im Cheol‑Joo Kim Ho Won Jang | 2021 | Nano-Micro Letters2021，13，5： | 1 |
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