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| 1 | Dual-priming oligonucleotide-based multiplex PCR using tissue samples in rapid urease test in the detection of Helicobacter pylori infection显示文摘AIM:To investigate whether tissue samples processed by the rapid urease test(RUT)kit are suitable for dualpriming oligonucleotide-based multiplex polymerase chain reaction(DPO-PCR)to detect Helicobacter pylori(H.pylori).METHODS:A total of 54 patients with specific gastrointestinal symptom were enrolled in this study.During endoscopy,gastric biopsy specimens were taken for histology,RUT,and DPO-PCR.DPO-PCR was performed on gastric biopsy samples and tissue samples that were analyzed by RUT at 2 separate institutes.In detecting H.pylori,the concordance rate of the DPO-PCR tests between the tissue samples that had been submitted to RUT and the gastric biopsy samples was investigated.RESULTS:H.pylori co-occurred with 76.0%(19/25)of gastric ulcers,64.3%(9/14)of duodenal ulcers,and 33.3%(4/12)of gastritis cases.H.pylori infection was found in 100%(3/3)of the patients with both gastric and duodenal ulcers.Overall,H.pylori was detected in 35 of 54(64.8%)patients.The diagnostic sensitivities of histology,RUT,and DPO-PCR were85.7%(30/35),74.3%(26/35),and 97.1%(34/35),respectively(P=0.02).The positive predictive value(PPV)of DPO-PCR was 94.4%,whereas the negative predictive value(NPV)was 94.7%.In the rapid urease test(CLOtest)-negative cases,the frequency of positive DPO-PCR and histologic results was 20.0%(7/35).The concordance rate of the DPO-PCR tests between the tissue samples from the RUT kit and the gastric biopsy samples was 94.4%(51/54).The rate of DPOPCR and silver stain positivity in the RUT-negative cases was 20.0%(7/35).CONCLUSION:In diagnosing H.pylori infection,DPO-PCR can be performed on tissue samples that have been processed by the RUT kit.Particularly,in patients with RUT-negative results,DPO-PCR on these tissue samples could be helpful in detecting of H.pylori infection. | Woo Chul Chung Sung Hoon Jung Jung Hwan Oh Tae Ho Kim Dae Young Cheung Byung Wook Kim Sung Soo Kim Jin Il Kim Eun Young Sin | 2014 | World Journal of Gastroenterology2014，20，21： | 10 |
| 2 | Clinical characteristics of Helicobacter pylori-negative drugnegative peptic ulcer bleeding显示文摘AIM:To investigate the clinical characteristics and outcomes of idiopathic Helicobacter pylori(H.pylori)-negative and drug-negative]peptic ulcer bleeding(PUB).METHODS:A consecutive series of patients who experienced PUB between 2006 and 2012 was retrospectively analyzed.A total of 232 patients were enrolled in this study.The patients were divided into four groups according to the etiologies of PUB:idiopathic,H.pylori-associated,drug-induced and combined(H.pylori-associated and drug-induced)types.We compared the clinical characteristics and outcomes between the groups.When the silver stain or rapid urease tests were H.pylori-negative,we obtained an additional biopsy specimen by endoscopic re-examination and performed an H.pylori antibody test 6-8 wk after the initial endoscopic examination.For a diagnosis of idiopathic PUB,a negative result of an H.pylori antibody test was confirmed.In all cases,re-bleeding was confirmed by endoscopic examination.For the risk assessment,the Blatchford and the Rockall scores were calculated for all patients.RESULTS:For PUB,the frequency of H.pylori infection was 59.5%(138/232),whereas the frequency of idiopathic cases was 8.6%(20/232).When idiopathic PUB was compared to H.pylori-associated PUB,the idiopathic PUB group showed a higher rate of rebleeding after initial hemostasis during the hospital stay(30%vs 7.4%,P = 0.02).When idiopathic PUB was compared to drug-induced PUB,the patients in the idiopathic PUB group showed a higher rate of rebleeding after initial hemostasis upon admission(30%vs 2.7%,P < 0.01).When drug-induced PUB was compared to H.pylori-associated PUB,the patients in the drug-induced PUB were older(68.49 ± 14.76 years vs 47.83 ± 15.15 years,P< 0.01) and showed a higher proportion of gastric ulcer(77%vs 49%,P < 0.01).However,the Blatchford and the Rockall scores were not significantly different between the two groups.Among the patients who experienced drug-induced PUB,no significant differences were found with respect to clinical characteristics,irrespective of H.pylori infection.CONCLUSION:Idiopathic PUB has unique clinical characteristics such as re-bleeding after initial hemostasis upon admission.Therefore,these patients need to undergo close surveillance upon admission. | Woo Chul Chung Eun Jung Jeon Dae Bum Kim Hea Jung Sung Yeon-Ji Kim Eun Sun Lim Min-ah Kim Jung Hwan Oh | 2015 | World Journal of Gastroenterology2015，21，28： | 8 |
| 3 | Concomitant therapy achieved the best eradication rate for Helicobacter pylori among various treatment strategies显示文摘AIM: To compare the Helicobacter pylori(H.pylori) eradication rate of clarithromycin-based triple therapy,metronidazole-based triple therapy,sequential therapy and concomitant therapy.METHODS: A total of 680 patients infected with H.pylori were divided into 4 groups and each group was treated with a different eradication therapy.Clarithromycin-based triple therapy was applied to the first group [rabeprazole,amoxicillin and clarithromycin(PAC) group: proton pump inhibitor(PPI),amoxicillin,clarithromycin],whereas the second group was treated with metronidazole-based triple therapy [rabeprazole,amoxicillin and metronidazole(PAM) group: PPI,amoxicillin,metronidazole].The third group was treated with rabeprazole and amoxicillin,followed by rabeprazole,clarithromycin and metronidazole(sequential group).The final group was simultaneously treated with rabeprazole,amoxicillin clarithromycin and metronidazole(concomitant therapy group).In the case of a failure to eradicate H.pylori,second-line quadruple and third-line eradication therapies were administered.RESULTS: The per protocol(PP) analysis was performed on 143,139,141 and 143 patients in the PAC,PAM,sequential and concomitant groups,respectively.We excluded patients who did not receive a C13-urea breath test(22,20,23 and 22 patients,respectively) and patients with less than an 80% compliance level(5,11,6 and 5 patients,respectively).The eradication rates were 76.2%(109/143) in the PAC group,84.2%(117/139) in the PAM group,84.4%(119/141) in the sequential group and 94.4%(135/143) in the concomitant group(P = 0.0002).All 14 patients who failed second-line therapy were treated with thirdline eradication therapy.Among these 14 patients,6 infections were successfully eradicated with the thirdline therapy.Both PP and intention-to-treat analysis showed an eradication rate of 42.9%(6/14).In the PAC group,3 of 4 patients were successfully cured(3/4,75%); 2 of 2 patients in the PAM group(2/2,100%) and 1 of 5 patients in the sequential group(1/5,20%) were also cured.In the concomitant group,all 3 patients failed(0/3,0%).CONCLUSION: The eradication rate for the concomitant therapy was much higher than those of the standard triple therapy or sequential therapy(Clinical Trials.gov number NCT01922765). | Hyun Jeong Lee Jin Il Kim Jin Soo Lee Eun Jung Jun Jung-Hwan Oh Dae Young Cheung Woo Chul Chung Byung-Wook Kim Sung Soo Kim | 2015 | World Journal of Gastroenterology2015，21，1： | 6 |
| 4 | 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 |
| 5 | InIncidence and clinical features of endoscopic ulcers developing after gastrectomy显示文摘AIM:To determine the precise incidence and clinical features of endoscopic ulcers following gastrectomy.METHODS:A consecutive series of patients who underwent endoscopic examination following gastrectomy between 2005 and 2010 was retrospectively analyzed.A total of 78 patients with endoscopic ulcers and 759 without ulcers following gastrectomy were enrolled.We analyzed differences in patient age,sex,size of the lesions,method of operation,indications for gastric resection,and infection rates of Helicobacter pylori(H.pylori) between the nonulcer and ulcer groups.RESULTS:The incidence of endoscopic ulcers after gastrectomy was 9.3% and that of marginal ulcers was 8.6%.Ulcers were more common in patients with Billroth Ⅱ anastomosis and pre-existing conditions forpeptic ulcer disease(PUD).Infection rates of H.pyloridid not differ significantly between the two groups.The patients who underwent operations to treat PUD had lower initial levels of hemoglobin and higher rates of hospital admission.CONCLUSION:H.pylori was not an important factor in ulcerogenesis following gastrectomy.For patients who underwent surgery for PUD,clinical course of marginal ulcers was more severe. | Woo Chul Chung Eun Jung Jeon Kang-Moon Lee Chang Nyol Paik Sung Hoon Jung Jung Hwan Oh Ji Hyun Kim Kyong-Hwa Jun Hyung Min Chin | 2012 | World Journal of Gastroenterology2012，18，25： | 4 |
| 6 | Comparison of CT and MRI for presurgical characterization of paraaortic lymph nodes in patients with pancreatico-biliary carcinoma显示文摘AIM:To determine the accuracy of computed tomography (CT) and magnetic resonance (MR) for presurgical characterization of paraaortic lymph nodes in patients with pancreatico-biliary carcinoma. METHODS:Two radiologists independently evaluated CT and MR imaging of 31 patients who had undergone lymphadenectomy (9 metastatic and 22 non-metastatic paraaortic nodes). Receiver operating characteristic (ROC) curve analysis was performed using a five point scale to compare CT with MRI. To re-define the morphologic features of metastatic nodes, we evaluated CT scans from 70 patients with 23 metastatic paraaortic nodes and 47 non-metastatic ones. The short axis diameter, ratio of the short to long axis, shape, and presence of necrosis were compared between metastatic and non-metastatic nodes by independent samples t-test and Fisher's exact test. P < 0.05 was considered statistically significant. RESULTS:The mean area under the ROC curve for CT (0.732 and 0.646, respectively) was slightly higher than that for MRI (0.725 and 0.598, respectively) without statistical significance (P = 0.940 and 0.716,respectively). The short axis diameter of the metastatic lymph nodes (mean = 9.2 mm) was significantly larger than that of non-metastatic ones (mean = 5.17 mm, P < 0.05). Metastatic nodes had more irregular margins (44.4%) and central necrosis (22.2%) than non-metastatic ones (9% and 0%, respectively), with statistical significance (P < 0.05). CONCLUSION:The accuracy of CT scan for the characterization of paraaortic nodes is not different from that of MRI. A short axis-diameter (> 5.3 mm), irregular margin, and presence of central necrosis are the suggestive morphologic features of metastatic paraaortic nodes. | Young Chul Kim Mi-Suk Park Seung-Whan Cha Yong Eun Chung Joon Suk Lim Myeong-Jin Kim Ki Whang Kim Kyung Sik Kim | 2008 | World Journal of Gastroenterology2008，14，14： | 4 |
| 7 | Endoscopic submucosal dissection for early gastric cancer with undifferentiated histology: could we extend the criteria beyond?显示文摘 | Yi Young Kim Seong Woo Jeon JiYeon Kim Jung Chul Park Kwang Bum Cho Kyung Sik Park EunSoo Kim Yun Jin Chung Joong Goo Kwon Jin Tae Jung Eun Young Kim Kyeong Ok Kim ByungIk Jang Si Hyung Lee Chang Hun Yang | 2013 | Surgical Endoscopy2013，，12： | 3 |
| 8 | Evaluation of non-ampullary duodenal polyps: Comparison of non-neoplastic and neoplastic lesions显示文摘AIM: To evaluate duodenal polyps, divided into nonneoplastic and neoplastic lesions. In addition, the clinical characteristics of duodenal hyperplastic polyps are determined. METHODS: We analyzed medical records of 50 114 consecutive patients submitted to for first diagnostic esophago-gastroduodenoscopy between January 2004 and December 2009. We excluded lesions on the ampulla of Vater and submucosal tumors. We studied 510 cases that were diagnosed endoscopically with duodenal polyps and enrolled a total of 221 cases that had undergone tissue biopsy. We analyzed the differences between non-neoplastic and neoplastic lesions, and determined the clinical features of duodenal hyperplastic polyps. RESULTS: Non-neoplastic lesions were found in 196 patients and neoplastic lesions in 25 patients. On uni-variate analysis, there were significant differences in shape, location, and size. Polyps more than 10 mm in diameter or polyps in the second portion had independent risk factors for being neoplastic lesions, as identified by multivariate analysis. In 23 cases of hyperplastic polyps (79.3%), they were accompanied by gastroduodenal pathology, which was possibly associated with Helicobacter pylori . CONCLUSION: Polyps of more than 10 mm or polyps in the second portion of the duodenum should be evaluated by histological examination. | Sung Hoon Jung Woo Chul Chung Eun Jung Kim Seol Hye Kim Chang Nyol Paik Bo In Lee Young Seok Cho Kang-Moon Lee | 2010 | World Journal of Gastroenterology2010，16，43： | 2 |
| 9 | Development of novel gene carrier using modified nano hydroxyapatite derived from equine bone for osteogenic differentiation of dental pulp stem cells显示文摘Hydroxyapatite(HA)is a representative substance that induces bone regeneration.Our research team extracted nanohydroxyapatite(EH)from natural resources,especially equine bones,and developed it as a molecular biological tool.Polyethylenimine(PEI)was used to coat the EH to develop a gene carrier.To verify that PEI is well coated in the EH,we first observed the morphology and dispersity of PEI-coated EH(pEH)by electron microscopy.The pEH particles were well distributed,while only the EH particles were not distributed and aggregated.Then,the existence of nitrogen elements of PEI on the surface of the pEH was confirmed by EDS,calcium concentration measurement and fourier transform infrared spectroscopy(FT-IR).Additionally,the pEH was confirmed to have a more positive charge than the 25 kD PEI by comparing the zeta potentials.As a result of pGL3 transfection,pEH was better able to transport genes to cells than 25 kD PEI.After verification as a gene carrier for pEH,we induced osteogenic differentiation of DPSCs by loading the BMP-2 gene in pEH(BMP-2/pEH)and delivering it to the cells.As a result,it was confirmed that osteogenic differentiation was promoted by showing that the expression of osteopontin(OPN),osteocalcin(OCN),and runt-related transcription factor 2(RUNX2)was significantly increased in the group treated with BMP-2/pEH.In conclusion,we have not only developed a novel nonviral gene carrier that is better performing and less toxic than 25 kD PEI by modifying natural HA(the agricultural byproduct)but also proved that bone differentiation can be effectively promoted by delivering BMP-2 with pEH to stem cells. | Myung Chul Lee Hoon Seonwoo Kyoung Je Jang Shambhavi Pandey Jaewoon Lim Sangbae Park Jae Eun Kim Yun-Hoon Choung Pankaj Garg Jong Hoon Chung | 2021 | Bioactive Materials2021，6，9： | 2 |
| 10 | Association between polymorphisms in SLC30A8, HHEX, CDKN2A/B, IGF2BP2, FTO, WFS1, CDKAL1, KCNQ1 and type 2 diabetes in the Korean population显示文摘 | Yong-Ho Lee Eun Seok Kang So Hun Kim Seung Jin Han Chul Hoon Kim Hyeong Jin Kim Chul Woo Ahn Bong Soo Cha Moonsuk Nam Chung Mo Nam Hyun Chul Lee | 2008 | Journal of Human Genetics (-)2008，，11： | 1 |
| 11 | Diffusion-Weighted Imaging with Sensitivity Encoding (SENSE) for Detecting Cranial Bone Marrow Metastases: Comparison with T1-Weighted Images显示文摘 | Won-Jin Moon Min Hee Lee Eun Chul Chung | 2007 | Korean J Radiol2007，8，3： | 1 |
| 12 | Topical application of Pleurotus eryngii extracts inhibits 2,4-dinitrochlorobenzene-induced atopic dermatitis in NC/Nga mice by the regulation of Th1/Th2 balance显示文摘 | Jae Ho Choi Hyung Gyun Kim Sun Woo Jin Eun Hee Han Tilak Khanal Minh Truong Do Yong Pil Hwang Jun Min Choi Sung-Sik Chun Young Chul Chung Tae Cheon Jeong Hye Gwang Jeong | 2013 | Food and Chemical Toxicology2013，，： | 1 |
| 13 | Purple sweet potato anthocyanins attenuate hepatic lipid accumulation through activating adenosine monophosphate–activated protein kinase in human HepG2 cells and obese mice显示文摘 | Yong Pil Hwang Jae Ho Choi Eun Hee Han Hyung Gyun Kim Ji-Hyang Wee Kyung Ok Jung Kyung Hee Jung Kwang-il Kwon Tae Cheon Jeong Young Chul Chung Hye Gwang Jeong | 2011 | Nutrition Research2011，，12： | 1 |
| 14 | Functional evaluation of parathyroid adenoma using 99mTc-MIBI parathyroid SPECT/CT: correlation with functional markers and disease severity显示文摘 | Hyung-Jun Im In Ki Lee Jin Chul Paeng Kyu Eun Lee Gi Jeong Cheon Keon Wook Kang June-Key Chung Dong Soo Lee | 2014 | Nuclear Medicine Communications2014，，： | 1 |
| 15 | Prognostic value of neutrophil-to-lymphocyte ratio in patients treated with concurrent chemoradiotherapy for locally advanced oesophageal cancer显示文摘 | Eun Jin Yoo Jun Chul Park Eun Hye Kim Chan Hyuk Park Choong Nam Shim Hyun Jik Lee Hyun Soo Chung Hyuk Lee Sung Kwan Shin Sang Kil Lee Chang Geol Lee Yong Chan Lee | 2014 | Digestive and Liver Disease2014，，： | 1 |
| 16 | Saponins from the roots of Platycodon grandiflorum stimulate osteoblast differentiation via p38 MAPK- and ERK-dependent RUNX2 activation显示文摘 | Hyung Min Jeong Eun Hee Han Yun Hey Jin Yong Pil Hwang Hyung Gyun Kim Bong Hwan Park Jin Young Kim Young Chul Chung Kwang Youl Lee Hye Gwang Jeong | 2010 | Food and Chemical Toxicology2010，，12： | 1 |
| 17 | The optimal endoscopic screening interval for detecting early gastric neoplasms显示文摘 | Chan Hyuk Park Eun Hye Kim Hyunsoo Chung Hyuk Lee Jun Chul Park Sung Kwan Shin Yong Chan Lee Ji Yeong An Hyoung-Il Kim Jae-Ho Cheong Woo Jin Hyung Sung Hoon Noh Choong Bae Kim Sang Kil Lee | 2014 | Gastrointestinal Endoscopy2014，，： | 1 |
| 18 | Effect of minoxidil on proliferation and apoptosis in dermal papilla cells of human hair follicle显示文摘 | Ji Hyun Han Oh Sang Kwon Jin Ho Chung Kwang Hyun Cho Hee Chul Eun Kyu Han Kim | 2004 | Journal of Dermatological Science2004，，2： | 1 |
| 19 | Effect of minoxidil on proliferation and apoptosis in dermal papilla cells of human hair follicle显示文摘 | Ji Hyun Han Oh Sang Kwon Jin Ho Chung Kwang Hyun Cho Hee Chul Eun Kyu Han Kim | 2004 | Journal of Dermatological Science2004，，2： | 1 |
| 20 | Association between polymorphisms in SLC30A8, HHEX, CDKN2A/B, IGF2BP2, FTO, WFS1, CDKAL1, KCNQ1 and type 2 diabetes in the Korean population显示文摘 | Yong-Ho Lee Eun Seok Kang So Hun Kim Seung Jin Han Chul Hoon Kim Hyeong Jin Kim Chul Woo Ahn Bong Soo Cha Moonsuk Nam Chung Mo Nam Hyun Chul Lee | 2008 | Journal of Human Genetics (-)2008，，11： | 1 |
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