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| 1 | Expression of heat shock proteins (HSP27, HSP60, HSP70, HSP90, GRP78, GRP94) in hepatitis B virus-related hepatocellular carcinomas and dysplastic nodules显示文摘AIM: Expression of heat shock proteins (HSPs) is frequently up-regulated in hepatocellular carcinoma (HCC), which evolves from dysplastic nodule (DN) and early HCC to advanced HCC. However, little is known about the differential expression of HSPs in multistep hepatocarcinogenesis. It was the purpose of this study to monitor the expression of HSPs in multistep hepatocarcinogenesis and to evaluate their prognostic significance in hepatitis B virus (HBV)related HCC.METHODS: Thirty-eight HCC and 19 DN samples were obtained from 52 hepatitis B surface antigen-positive Korean patients. Immunohistochemical and dot immunoblot analyses of HSP27, HSP60, HSP70, HSP90, glucoseregulated protein (GRP)78, and GRP94 were performed and their expression at different stages of HCC development was statistically analyzed.RESULTS: Expression of HSP27, HSP70, HSP90, GRP78, and GRP94 increased along with the stepwise progression of hepatocarcinogenesis. Strong correlation was found only in GRP78 (Spearman's r= 0.802). There was a positive correlation between the expressions of GRP78, GRP94, HSP90, or HSP70 and prognostic factors of HCC. Specifically, the expression of GRP78, GRP94, or HSP90 was associated significantly with vascular invasion and intrahepatic metastasis.CONCLUSION: The expressions of HSPs are commonly up-regulated in HBV-related HCCs and GRP78 might play an important role in the stepwise progression of HBVrelated hepatocarcinogenesis. GRP78, GRP94, and HSP90 may be important prognostic markers of HBV-related HCC, strongly suggesting vascular invasion and intrahepatic metastasis. | Seung Oe Lim Sung Gyoo Park Jun-Hi Yoo Young Min Park Hie-Joon Kim Kee-Taek Jang Jae Won Cho Byung Chul Yoo Gu-Hung Jung Cheol Keun Park | 2005 | World Journal of Gastroenterology2005，11，14： | 62 |
| 2 | Eosinophilic gastroenteritis presenting as small bowel obstruction: A case report and review of the literature显示文摘Eosinophilic gastroenteritis is a rare disease of unknown etiology. It is characterized by eosinophilic infiltration of the bowel wall to a variable depth and symptoms associated with gastrointestinal tract. Recently, the authors experienced a case of eosinophilic gastroenteritis presenting as small bowel obstruction. A 51-year old woman was admitted to our hospital complaining of abdominal pain and vomiting. Physical examination revealed a distended abdomen with diffuse tenderness. Complete blood count showed mild leukocytosis without eosinophilia. Computed tomography confirmed a dilatation of the small intestine with ascites. An emergency laparotomy was performed for a diagnosis of peritonitis due to intestinal obstruction. Segmental resection of the ileum and end to end anastomosis were performed. Histologically, there was a dense infiltration of eosinophils throughout the entire thickness of ileal wall and eosinophilic enteritis was diagnosed. The patient recovered well, and was free from gastrointestinal symptoms at the time when we reported her disease. | Min Young Yun Young Up Cho In Suh Park Sun Keun Choi Sei Joong Kim Seok Hwan Shin Kyung Rae Kim | 2007 | World Journal of Gastroenterology2007，13，11： | 19 |
| 3 | 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 |
| 4 | Gender differences in ghrelin, nociception genes, psychological factors and quality of life in functional dyspepsia显示文摘AIM to evaluate gender differences in the aspect of ghrelin,nociception-related genes and psychological aspects and the quality of life(Qo L) in Korean functional dyspepsia(FD) patients.METHODS Total of 191 persons were prospectively enrolled between March 2013 and May 2016 in Seoul National Bundang Hospital,and classified into control and FD group based on ROME Ⅲ criteria. Questionnaire included assessment for dyspepsia symptoms,Qo L and anxiety or depression. Preproghrelin and nociception genes in the gastric mucosa and plasma acyl/des-acyl ghrelin were measured. RESULTS Lower level of plasma acyl ghrelin in FD patients compared to control was significant only in male(15.9 fmol/m L vs 10.4 fmol/m L,P = 0.017). Significantly higher m RNA expressions of nerve growth factor and transient receptor potential vanilloid receptor 1 were observed in male(P = 0.002 and P = 0.014,respectively) than in female. In contrast,female FD patients had a higher anxiety and depression score than male FD(P = 0.029),and anxiety score was correlated with epigastric pain only in female FD patients(female: Spearman rho = 0.420,P = 0.037). The impairment of overall Qo L was more prominent in female FD patients than male patients(5.4 ± 0.3 vs 6.5 ± 0.3,P = 0.020). CONCLUSION Gender differences of ghrelin and nociception-related genes in male and psychological factors in female underlie FD symptoms. More careful assessment of psychological or emotional status is required particularly for the female FD patients. | Yoon Jin Choi Young Soo Park Nayoung Kim Yong Sung Kim Sun Min Lee Dong Ho Lee Hyun Chae Jung | 2017 | World Journal of Gastroenterology2017，23，45： | 16 |
| 5 | Prevalence of clonorchiasis in patients with gastrointestinal disease: A Korean nationwide multicenter survey显示文摘AIM: To investigate prevalence of Clonorchis sinensis in patients with gastrointestinal symptoms, and the relation of the infection to hepatobiliary diseases in 26 hospitals in Korea.METHODS: Consecutive patients who had been admitted to the Division of Gastroenterology with gastrointestinal symptoms were enrolled from March to April 2005. Of those who had been diagnosed with clonorchiasis, epidemiology and correlation between infection and hepatobiliary diseases were surveyed by questionnaire.RESULTS: Of 3080 patients with gastrointestinal diseases, 396 (12.9%) had clonorchiasis and 1140 patients (37.2%) had a history of eating raw freshwater fish. Of those with a history of raw freshwater fish ingestion, 238 (20.9%) patients had clonorchiasis. Cholangiocarcinoma was more prevalent in C. sinensis-infected patients than non-infected patients [34/396 (8.6%) vs 145/2684 (5.4%), P = 0.015]. Cholangiocarcinoma and clonorchiasis showed statistically significant positive cross-relation (P = 0.008). Choledocholithiasis, cholecystolithiasis, cholangitis, hepatocellular carcinoma, and biliary pancreatitis did not correlate with clonorchiasis.CONCLUSION: Infection rate of clonorchiasis was still high in patients with gastrointestinal diseases in Korea, and has not decreased very much during the last two decades. Cholangiocarcinoma was related to clonorchiasis, which suggested an etiological role for the parasite. | Ho Gak Kim Jimin Han Myung-Hwan Kim Kyu Hyun Cho Im Hee Shin Gwang Ha Kim Jae Seon Kim Jin Bong Kim Tae Nyeun Kim Tae Hyeon Kim Tae Hyo Kim Jae Woo Kim Ji Kon Ryu Young-Soo Moon Jong Ho Moon Sung Jae Park Chan Guk Park Sung-Jo Bang Chang Heon Yang Kyo-Sang Yoo Byung Moo Yoo Kyu Taek Lee Dong Ki Lee Byung Seok Lee Sang Soo Lee Seung Ok Lee Woo Jin Lee Chang Min Cho Young-Eun Joo Gab Jin Cheon Young Woo Choi Jae Bok Chung Yong Bum Yoon | 2009 | World Journal of Gastroenterology2009，15，1： | 15 |
| 6 | Characteristics of gastric cancer in peptic ulcer patients with Helicobacter pylori infection显示文摘AIM:To evaluate the incidence and clinical characteristics of gastric cancer(GC) in peptic ulcer patients with Helicobacter pylori(H.pylori) infection.METHODS:Between January 2003 and December 2013, the medical records of patients diagnosed with GC were retrospectively reviewed.Those with previous gastric ulcer(GU) and H.pylori infection were assigned to the Hp GU-GC group(n = 86) and those with previous duodenal ulcer(DU) disease and H.pylori infection were assigned to the Hp DUGC group(n = 35).The incidence rates of GC in the Hp GU-GC and Hp DU-GC groups were analyzed.Data on demographics(age, gender, peptic ulcer complications and cancer treatment), GC clinical characteristics [location, pathological diagnosis, differentiation, T stage, Lauren's classification, atrophy of surrounding mucosa and intestinal metaplasia(IM)], outcome of eradication therapy for H.pylori infection, esophagogastroduodenoscopy number and the duration until GC onset were reviewed.Univariate and multivariate analyses were performed to identify factors influencing GC development.The relative risk of GC was evaluated using a Cox proportional hazards model.RESULTS:The incidence rates of GC were 3.60%(86/2387) in the Hp GU-GC group and 1.66%(35/2098) in the Hp DU-GC group.The annual incidence was 0.41% in the Hp GU-GC group and 0.11% in the Hp DUGC group.The rates of moderate-to-severe atrophy of the surrounding mucosa and IM were higher in the Hp GU-GC group than in the Hp DU-GC group(86% vs 34.3%, respectively, and 61.6% vs 14.3%, respectively, P < 0.05).In the univariate analysis, atrophy of surrounding mucosa, IM and eradication therapy for H.pylori infection were significantly associated with the development of GC(P < 0.05).There was no significant difference in the prognosis of GC patients between the Hp GU-GC and Hp DU-GC groups(P = 0.347).The relative risk of GC development in the Hp GUGC group compared to that of the Hp DU-GC group,after correction for age and gender,was 1.71(95%CI:1.09-2.70;P=0.02).CONCLUSION:GU patients with H.pylori infection had higher GC incidence rates and relative risks.Atrophy of surrounding mucosa,IM and eradication therapy were associated with GC. | Jae Jin Hwang Dong Ho Lee Ae-Ra Lee Hyuk Yoon Cheol Min Shin Young Soo Park Nayoung Kim | 2015 | World Journal of Gastroenterology2015，21，16： | 15 |
| 7 | Pre-existing diabetes mellitus increases the risk of gastric cancer:A meta-analysis显示文摘AIM:To systematically assess the association between diabetes and incidence of gastric cancer.METHODS:We searched MedLine (PubMed),EMBASE,and the Cochrane Library without any limitations with respect to publication date or language,we also searched the references of qualifying articles.Casecontrol studies and cohort studies comparing the risk of gastric cancer between diabetic patients and control subjects were included.We excluded studies reporting only standardized incidence ratios without control groups and those that investigated only mortality but not incidence.Seventeen studies met our criteria,and the qualities of these studies were assessed using theNewcastle-Ottawa Quality Assessment Scale.We performed a meta-analysis of pre-existing diabetes and gastric cancer incidence using the DerSimonian-Laird method for random-effects.For subgroup analyses,we separated the studies by study type,region,sex and method to determine confounding factors and reliability.We also conducted subgroup analyses to examine the effects of smoking,Helicobacter pylori (H.pylori) infection,and cancer site.Publication bias was evaluated using Begg's test.RESULTS:A random-effects model meta-analysis showed an increased gastric cancer risk in diabetic patients [relative risk (RR)=1.19;95%CI:1.08-1.31].Subgroup analyses indicated that this result persisted in cohort studies (RR=1.20;95%CI:1.08-1.34),in studies on populations of both Western (RR=1.18;95%CI:1.03-1.36) and Eastern countries (RR=1.19;95%CI:1.02-1.38),in a female subgroup (RR=1.24;95%CI:1.01-1.52),and in highly qualified studies (RR=1.17;95%CI:1.05-1.31).Moreover,these results persisted when the analysis was confined to studies adjusted for well-known gastric cancer risk factors such as smoking (RR=1.17;95%CI:1.01-1.34) and H.pylori infection (RR=2.35;95%CI:1.24-4.46).CONCLUSION:Pre-existing diabetes mellitus may increase the risk of gastric cancer by approximately 19%.This effect seems to be unrelated to geographical region. | Jae Moon Yoon Ki Young Son Chun Sick Eom Daniel Durrance Sang Min Park | 2013 | World Journal of Gastroenterology2013，19，6： | 14 |
| 8 | Programmed death ligand-1 expression and its prognostic role in esophageal squamous cell carcinoma显示文摘AIM To investigate the expression and prognostic role of programmed death ligand-1(PD-L1) in locally advanced esophageal squamous cell carcinoma(ESCC).METHODS A total of 200 patients with ESCC who underwent radical esophagectomy with standard lymphadenectomy as the initial definitive treatment in Seoul National University Hospital from December 2000 to April 2013 were eligible for this analysis. Tissue microarrays were constructed by collecting tissue cores from surgical specimens, and immunostained with antibodies directed against PD-L1, p16, and c-Met. Medical records were reviewed retrospectively to assess clinical outcomes. Patients were divided into two groups by PD-L1 status, and significant differences in clinicopathologic characteristics between the two groups were assessed. RESULTS Tumor tissues from 67 ESCC patients(33.5%) were PDL1-positive. Positive p16 expression was observed in 21 specimens(10.5%). The H-score for c-Met expression was ≥ 50 in 42 specimens(21.0%). Although PDL1-positivity was not significantly correlated with any clinical characteristics including age, sex, smoking/alcoholic history, stage, or differentiation, H-scores for c-Met expression were significantly associated with PDL1-positivity(OR = 2.34, 95%CI: 1.16-4.72, P = 0.017). PD-L1 expression was not significantly associated with a change in overall survival(P = 0.656). In contrast, the locoregional relapse rate tended to increase(P = 0.134), and the distant metastasis rate was significantly increased(HR = 1.72, 95%CI: 1.01-2.79, P = 0.028) in patients with PD-L1-positive ESCC compared to those with PD-L1-negative ESCC.CONCLUSION PD-L1 expression is positively correlated with c-Met expression in ESCC. PD-L1 may play a critical role in distant failure and progression of ESCC. | Ryul Kim Bhumsuk Keam Dohee Kwon Chan-Young Ock Miso Kim Tae Min Kim Hak Jae Kim Yoon Kyung Jeon In Kyu Park Chang Hyun Kang Dong-Wan Kim Young Tae Kim Dae Seog Heo | 2016 | World Journal of Gastroenterology2016，22，37： | 14 |
| 9 | Prevalence of Primary and Secondary Antimicrobial Resistance of H elicobacter pylori in K orea from 2003 through 2012显示文摘 | Jung Won Lee Nayoung Kim Jung Mogg Kim Ryoung Hee Nam Hyun Chang Jae Yeon Kim Cheol Min Shin Young Soo Park Dong Ho Lee Hyun Chae Jung | 2012 | Helicobacter2012，，3： | 12 |
| 10 | The modulation of radiation-induced cell death by genistein in K562 cells:Activation of thymidine kinase 1显示文摘Ionizing radiation is one of the most effective tools in cancer therapy. In a previous study, we reported that protein tyrosine kinase (PTK) inhibitors modulate the radiation responses in the human chronic myelogenous leukemia (CML)cell line K562. The receptor tyrosine kinase inhibitor, genistein, delayed radiation-induced cell death, while non-recepter tyrosine kinase inhibitor, herbimycin A (HMA) enhances radiation-induced apoptosis. In this study, we focused on the modulation of radiation-induced cell death by genistein and performed PCR-select suppression subtractive hybridization(SSH) to understand its molecular mechanism. We identified human thymidine kinase 1 (TK1), which is cell cycle regulatory gene and confirmed expression of TK1 mRNA by Northern blot analysis. Expression of TK1 mRNA and TK 1enzymatic activity were parallel in their increase and decrease. TK1 is involved in G1-S phase transition of cell cycle progression. In cell cycle analysis, we showed that radiation induced G2 arrest in K562 cells but it was not able to sustain. However, the addition of genistein to irradiated cells sustained a prolonged G2 arrest up to 120 h. In addition,the expression of cell cycle-related proteins, cyclin A and cyclin B 1, provided the evidences of G1/S progression and G2-arrest, and their relationship with TK1 in cells treated with radiation and genistein. These results suggest that the activation of TK1 may be critical to modulate the radiation-induced cell death and cell cycle progression in irradiated K562 cells. | Min Ho JEONG Young Hee JIN Eun Young KANG Wol Soon JO Hwan Tae PARK Jae Dong LEE Yeo Jin YOO Soo Jin JEONG | 2004 | Cell Research2004，14，4： | 10 |
| 11 | Detection and treatment of synchronous lesions in colorectal cancer: The clinical implication of perioperative colonoscopy显示文摘AIM: To evaluate the clinical significance of pre- and intra-operative colonoscopy for the detection of synchronous lesions in colon cancer. METHODS: Two hundred and sixty-five pre-operative and 51 intra-operative colonoscopic evaluations were performed in 316 colorectal cancer patients who underwent curative resection from January 2001 to June 2006. The incidence and characteristics of synchronous lesions and their influence on surgery were evaluated. RESULTS: Two hundred and eighty-two synchronous lesions were detected in 124 (39.2%) of 316 patients including all lesions regardless of their histologic type. True adenomatous polyps were found in 91 (28.8%) of 316 patients, and 17 (5.4% of all patients) patients had synchronous colon cancers. The preoperative identification of synchronous lesions altered the planned surgery in 37 (14.0%) of 265 patients. In 18 patients among the surgically removed cases, the lesions were removed by extending the resection range. Further segmental resection or polypectomy through enterotomy was necessary in 19 patients. Nineteen (37.2%) of 51 intraoperative colonoscopy cases had synchronous lesions. Additional surgical procedures including segmental bowel resection and polypectomy with enterotomy were necessary in 7 (13.7%) of 51 intraoperative colonoscopy cases to remove the lesions. CONCLUSION: Synchronous colorectal polyps or cancer are frequent and their preoperative detection is important for optimal surgical planning and treatment. Intraoperative colonoscopy is a useful option in cases where a preoperative colonoscopy is not feasible. | Min Sun Kim Young Jin Park | 2007 | World Journal of Gastroenterology2007，13，30： | 10 |
| 12 | Priapism secondary to penile metastasis of rectal cancer显示文摘Metastatic penile carcinoma is rare and usually originates from genitourinary tumors. The presenting symptoms or signs have been described as nonspecific except for priapism. Rectal adenocarcinoma is a very unusual source of metastatic penile carcinoma. We report a case of metastatic penile carcinoma that originated from the rectum. Symptomatic improvement occurred with palliative radiotherapy. | Ji Chan Park Wook Hyun Lee Min Kyu Kang Suk Young Park | 2009 | World Journal of Gastroenterology2009，15，33： | 10 |
| 13 | Clinical utility of complex mutations in the core promoter and proximal precore regions of the hepatitis B virus genome显示文摘The core promoter and proximal precore regions are the most complex portions of the hepatitis B virus(HBV) genome. These regions cooperatively regulate viral replication and differentially regulate the synthesis of the viral proteins E,core,and X. Multiple mutations in these regions are associated with the persistency of viral infection and the development of cirrhosis and hepatocellular carcinoma(HCC). In South Korea,nearlyall HBVs are classified as HBV genotype C2; the majority of these viruses have the basal core promoter double mutation,a precore stop mutation,or both. These mutations may play a role in the alteration of viral and clinical features,and abundant and complex mutations are particularly prevalent in the core promoter and proximal precore regions. We previously demonstrated that the accumulation of ≥ 6 mutations at eight key nucleotides located in these regions(G1613A,C1653 T,T1753 V,A1762 T,G1764 A,A1846 T,G1896 A,and G1899A) is a useful marker to predict the development of HCC regardless of advanced liver disease. In addition,certain mutation combinations were predominant in cases with ≥ 4 mutations. In cases with ≤ 5 mutations,a low Hepatitis B e antigen titer(< 35 signal to noise ratio) was indicative of HCC risk. Viral mutation data of the single HBV genotype C2 suggest that the combined effect of the number and pattern of mutations in the core promoter and proximal precore regions is helpful in predicting HCC risk. | Young Min Park | 2015 | World Journal of Hepatology2015，7，1： | 9 |
| 14 | Risk factors for hepatocellular carcinoma in patients with drug-resistant chronic hepatitis B显示文摘AIM:To investigate the risk factors and characteristics of hepatocellular carcinoma(HCC) in the patients with drug-resistant chronic hepatitis B(CHB).METHODS:A total of 432 patients with drug-resistant CHB were analyzed retrospectively from January 2004to December 2012. The patients were divided into two groups:the HCC group(n = 57) and the non-HCC group(n = 375). Two groups compared using logistic regression for various patients and viral characteristics in order to identify associated risk factors for HCC.Secondarily,patient and tumor characteristics of HCC patients with na ve CHB(N group,n = 117) were compared to the HCC group(R group,n = 57) to identify any difference in HCC characteristics between them.RESULTS:A significant difference was found for age,platelet count,alpha-fetoprotein(AFP),positivity of HBeAg,seroconversion rate of HBeAg,virologic response,the Child-Pugh score,presence of rtM204I,and the duration of antiviral treatment in non-HCC and HCC group. Cirrhosis,age(> 50 years),HBeAg(+),virologic non-responder status,and rtM204I mutants were independent risk factors for the development of HCC. The R group had lower serum C-reactive protein(CRP) and AFP levels,earlier stage tumors,and a shorter mean tumor surveillance period than the N group. However,the total follow-up duration was not significantly different between the two groups.CONCLUSION:13.2% of patients with drug-resistant CHB developed HCC. Age,cirrhosis,YIDD status,HBeAg status,and virologic response are associated with risk of HCC. Patients with drug-resistant CHB and these clinical factors may benefit from closer HCC surveillance. | Chung Hwan Jun Hyoung Ju Hong Min Woo Chung Seon Young Park Sung Bum Cho Chang Hwan Park Young Eun Joo Hyun Soo Kim Sung Kyu Choi Jong Sun Rew | 2013 | World Journal of Gastroenterology2013，19，40： | 7 |
| 15 | Optimal initiation of Helicobacter pylori eradication in patients with peptic ulcer bleeding显示文摘AIM:To evaluate when Helicobacter pylori(H.pylori)eradication therapy(ET)should be started in patients with peptic ulcer bleeding(PUB).METHODS:Clinical data concerning adults hospitalizedwith PUB were retrospectively collected and analyzed.Age,sex,type and stage of peptic ulcer,whether endoscopic therapy was performed or not,methods of H.pylori detection,duration of hospitalization,and specialty of the attending physician were investigated.Factors influencing the confirmation of H.pylori infection prior to discharge were determined using multiple logistic regression analysis.The H.pylori eradication rates of patients who received ET during hospitalization and those who commenced ET as outpatients were compared.RESULTS:A total of 232 patients with PUB were evaluated for H.pylori infection by histology and/or rapid urease testing.Of these patients,53.7%(127/232)had confirmed results of H.pylori infection prior to discharge.In multivariate analysis,duration of hospitalization and ulcer stage were factors independently influencing whether H.pylori infection was confirmed before or after discharge.Among the patients discharged before confirmation of H.pylori infection,13.3%(14/105)were lost to follow-up.Among the patients found to be H.pylori-positive after discharge,41.4%(12/29)did not receive ET.There was no significant difference in the H.pylori eradication rate between patients who received ET during hospitalization a n d t h o s e w h o c o m m e n c e d E T a s o u t p a t i e n t s[intention-to-treat:68.8%(53/77)vs 60%(12/20),P=0.594;per-protocol:82.8%(53/64)vs 80%(12/15),P=0.723].CONCLUSION:Because many patients with PUB who were discharged before H.pylori infection status was confirmed lost an opportunity to receive ET,we should confirm H.pylori infection and start ET prior to discharge. | Hyuk Yoon Dong Ho Lee Eun Sun Jang Jaihwan Kim Cheol Min Shin Young Soo Park Jin-Hyeok Hwang Jin-Wook Kim Sook-Hayng Jeong Nayoung Kim | 2015 | World Journal of Gastroenterology2015，21，8： | 7 |
| 16 | Clinicopathologic and molecular features associated with patient age in gastric cancer显示文摘AIM: To compare characteristics and prognosis of gastric cancer based on age.METHODS: A retrospective study was conducted on clinical and molecular data from patients(n =1658) with confirmed cases of gastric cancer in Seoul National University Bundang Hospital(Seoul, South Korea) from 2003 to 2010 after exclusion of patients diagnosed with lymphoma, gastrointestinal stromal tumor, and metastatic cancer in the stomach. DNA was isolated from tumor and adjacent normal tissue,and a set of five markers was amplified by polymerase chain reaction to assess microsatellite instability(MSI). MSI was categorized as high, low, or stable if ≥ 2, 1, or 0 markers, respectively, had changed.Immunohistochemistry was performed on tissue sections to detect levels of expression of p53, human epidermal growth factor receptor(HER)-2, and epidermal growth factor receptor. Statistical analysis of clinical and molecular data was performed to assess prognosis based on the stratification of patients by age(≤ 45 and> 45 years).RESULTS: Among the 1658 gastric cancer patients, the number of patients with an age ≤ 45 years was 202(12.2%; 38.9 ± 0.4 years) and the number of patients> 45 years was 1456(87.8%; 64.1 ± 0.3 years).Analyses revealed that females were predominant inthe younger group(P < 0.001). Gastric cancers in the younger patients exhibited more aggressive features and were at a more advanced stage than those in older patients. Precancerous lesions, such as atrophic gastritis and intestinal metaplasia, were observed less frequently in the older than in the younger group(P < 0.001). Molecular characteristics, including overexpression of p53(P < 0.001), overexpression of HER-2(P = 0.006), and MSI(P = 0.006), were less frequent in gastric cancer of younger patients. Cancer related mortality was higher in younger patients(P= 0.048), but this difference was not significant after adjusting for the stage of cancer.CONCLUSION: Gastric cancer is distinguishable between younger and older patients based on both clinicopathologic and molecular features, but stage is the most important predictor of prognosis. | Ji Yeon Seo Eun Hyo Jin Hyun Jin Jo Hyuk Yoon Cheol Min Shin Young Soo Park Nayoung Kim Hyun Chae Jung Dong Ho Lee | 2015 | World Journal of Gastroenterology2015，21，22： | 7 |
| 17 | Recent Progress and Development in Extrusion of Rare Earth Free Mg Alloys: A Review显示文摘Mg and its alloys are the lightest structural metals available and are extremely attractive for applications as lightweight components, particularly in the automobile, electronic, and aerospace industries. The global market for wrought Mg alloys has steadily expanded over the past decade. And numerous studies have been carried out to meet this increasing demand of high-performance Mg alloys. However, Mg extrusion alloys have had a very limited usage so far. To overcome existing industrial challenges, one desirable approach is the development of low-cost rare earth(RE) free Mg extrusion alloys with superior mechanical properties. This review will introduce the recent research highlights in the extrusion of Mg alloys, specifi cally focusing on low-cost RE-free Mg alloy. The results from both the literature and our previous study are summarized and critically reviewed. Several aspects of RE-free Mg extrusion alloys are described in detail:(1) novel alloying designs including Mg–Al-, Mg–Zn-, Mg–Ca-, Mg–Sn-, and Mg–Bi-based alloys,(2) advanced extrusion techniques, and(3) extrusion-related severe plastic deformation(SPD) processing. Accordingly, considering the large gap in mechanical properties between the current RE-free Mg alloys and high-performance aluminum alloys, new alloy design, processing route control, and recommendations for future research on RE-free Mg extrusion alloys are also proposed. We hope this review will not only off er insightful information regarding the extrusion of RE-free Mg alloys but also inspire the development of new Mg extrusion technologies. | Shuai-Ju Meng Hui Yu Shao-Da Fan Qi-Zhi Li Sung Hyuk Park Joung Sik Suh Young Min Kim Xiao-Long Nan Ming-Zhe Bian Fu-Xing Yin Wei-Min Zhao Bong Sun You Kwang Seon Shin | 2019 | Acta Metallurgica Sinica(English Letters)2019，32，2： | 6 |
| 18 | Effect of electrical stimulation on neural regeneration via the p38-RhoA and ERK1/2-Bcl-2 pathways in spinal cord-injured rats显示文摘Although electrical stimulation is therapeutically applied for neural regeneration in patients, it remains unclear how electrical stimulation exerts its effects at the molecular level on spinal cord injury(SCI). To identify the signaling pathway involved in electrical stimulation improving the function of injured spinal cord, 21 female Sprague-Dawley rats were randomly assigned to three groups: control(no surgical intervention, n = 6), SCI(SCI only, n = 5), and electrical simulation(ES; SCI induction followed by ES treatment, n = 10). A complete spinal cord transection was performed at the 10^(th) thoracic level. Electrical stimulation of the injured spinal cord region was applied for 4 hours per day for 7 days. On days 2 and 7 post SCI, the Touch-Test Sensory Evaluators and the Basso-Beattie-Bresnahan locomotor scale were used to evaluate rat sensory and motor function. Somatosensory-evoked potentials of the tibial nerve of a hind paw of the rat were measured to evaluate the electrophysiological function of injured spinal cord. Western blot analysis was performed to measure p38-RhoA and ERK1/2-Bcl-2 pathways related protein levels in the injured spinal cord. Rat sensory and motor functions were similar between SCI and ES groups. Compared with the SCI group, in the ES group, the latencies of the somatosensory-evoked potential of the tibial nerve of rats were significantly shortened, the amplitudes were significantly increased, RhoA protein level was significantly decreased, protein gene product 9.5 expression, ERK1/2, p38, and Bcl-2 protein levels in the spinal cord were significantly increased. These data suggest that ES can promote the recovery of electrophysiological function of the injured spinal cord through regulating p38-RhoA and ERK1/2-Bcl-2 pathway-related protein levels in the injured spinal cord. | Min Cheol Joo Chul Hwan Jang Jong Tae Park Seung Won Choi Seungil Ro Min Seob Kim Moon Young Lee | 2018 | Neural Regeneration Research2018，13，2： | 6 |
| 19 | 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 |
| 20 | Ampullary neuroendocrine tumor diagnosed by endoscopic papillectomy in previously confirmed ampullary adenoma显示文摘Ampullary adenoma is a common indication for endoscopic papillectomy. Ampullary neuroendocrine tumor(NET) is a rare disease for which complete surgical resection is the treatment of choice. However, because of the morbidity and mortality associated with surgical resection, endoscopic papillectomy is increasingly used in selected cases of low grade, with no metastasis and no invasion of the pancreatic or bile duct. Also, confirmed and complete endoscopic resection of ampullary NET accompanied by adenoma has not been reported to date. We report herein a rare case of an ampullary NET accompanied with adenoma, which was successfully and completely resected via endoscopic papillectomy. Prior to papillectomy, this case was diagnosed as an ampullary adenoma. | Seoung Ho Lee Tae Hoon Lee Si-Hyong Jang Chi Young Choi Won Myung Lee Ji Hey Min Hyun Deuk Cho Sang-Heum Park | 2016 | World Journal of Gastroenterology2016，22，13： | 6 |
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