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Primary malignant melanoma of uterine cervix: a suggestion of new scheme of treatment combination

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Chinese Journal of Cancer Research 2014年第3期26卷 351-354页

作者： Kyung-Jin Min Yeun-Sun Kim Jin-Hwa Hong Jae-kwan lee Dae-sik Yang Department of Obstetrics and Gynaecology Korea University Medical Centre Department of Radiation Oncology Korea University Medical Centre

Historically, the lack of melanocytes in the vaginal and cervical mucus membranes has deterred the findings of primary melanomas. Mainly due to its rarity, difficulty to diagnose, and poor prognosis, there has been no absolute agreement on comprehensive treatment so far. In this case report, we present a case of a 46-year-old woman with primary malignant melanoma of uterine cervix. She underwent neo-adjuvant chemotherapy initially followed by a radical hysterectomy. After adjuvant concurrent chemo-radiation, the patient has been followed up for 24 months. So far, she has not shown any symptoms or signs of recurrence. Further studies with more cases based on variable combinations of treatment regimen have been on the way.

关键词： Malignant melanoma uterine cervix neo-adjuvant chemotherapy chemo-radiation

Forecasting promising technology using analysis of patent information:Focused on next generation mobile communications

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Journal of Central South University 2014年第11期21卷 4303-4310页

作者： CHOI Seung-Wook YOU Yen-Yoo NA kwan-sik Department of Knowledge Service & Consulting Hansung UniversitySeoul Korea Department of Management Information Systems Seowon UniversityCheongju Korea

In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase rate, and patent activity. These indicators were quantified into several indexes and then integrated into an evaluation score to provide promising technologies. As a result of the suggested patent analysis, four technologies out of twenty two in details classification were selected, which showed outstanding technology competitiveness, high patent share and increasing rates as well as high recent-patent-ratios and triad-patent-family-ratios. Each of the selected technologies scored more than 10 points in total, and the following four technologies were suggested as promising ones in the field of next generation mobile communication: 1) 3GPP based mobile communication, 2) beyond 4G mobile communication, 3) IEEE 802.16 based mobile communication, which are in medium classification of broadband mobile communication system, and 4) testing/certification system of mobile communication, which is in medium classification of mobile communication testing/certification system.

关键词： next generation mobile communication promising technology forecasting patent information patent analysis patent indicators

Clinical outcomes of self-expandable metal stents in palliation of malignant anastomotic strictures caused by recurrent gastric cancer

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World Journal of Gastroenterology 2009年第28期15卷 3523-3527页

作者： Yu Kyung Cho Sang Woo Kim kwan Woo Nam Jae Hyuck Chang Jae Myung Park Jeong-Jo Jeong In Seok lee Myung-Gyu Choi In-sik Chung Department of Internal Medicine The Catholic University of Korea

AIM： To examine the technical feasibility and clinical outcomes of the endoscopic insertion of a selfexpandable metal stent （SEMS） for the palliation of a malignant anastomotic stricture caused by recurrent gastric cancer. METHODS： The medical records of patients, who had obstructive symptoms caused by a malignant anastomotic stricture after gastric surgery and underwent endoscopic insertion of a SEMS from January 2001 to December 2007 at Kangnam St Mary＇s Hospital, were reviewed retrospectively. RESULTS： Twenty patients （15 male, mean age 63 years） were included. The operations were a total gastrectomy with esophagojejunostomy （n = 12）, subtotal gastrectomy with Billroth-Ⅰ reconstruction （n = 2） and subtotal gastrectomy with Billroth- Ⅱ reconstruction （n = 8）. The technical and clinical success rates were 100% and 70%, respectively. A small bowel or colon stricture was the reason for a lack of improvement in symptoms in 4 patients. Two of these patients showed improvement in symptoms after another stent was placed. Stent reobstruction caused by tumor ingrowth or overgrowth occurred in 3 patients （15%） within 1 mo after stenting. Stent migration occurred with a covered stent in 3 patients who underwent a subtotal gastrectomy with Billroth-Ⅱ reconstruction. Two cases of partial stent migration were easily treated with a second stent or stent repositioning. The median stent patency was 56 d （range, 5-439 d）. The median survival was 83 d （range, 12-439 d）. CONCLUSION： Endoscopic insertion of a SEMS provides safe and effective palliation of a recurrent anastomotic stricture caused by gastric cancer, A meticulous evaluation of the presence of other strictures before inserting the stent is essential for symptom improvement.

关键词： Stents Surgical anastomosis Stricture Endoscopic gastrointestinal surgery Stomach neoplasms

Risk factors for postoperative recurrence after primary bowel resection in patients with Crohn's disease

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World Journal of Gastroenterology 2017年第38期23卷 7016-7024页

作者： kwan Mo Yang Chang sik Yu Jong Lyul lee Chan Wook Kim Yong sik Yoon In Ja Park Seok-Byung Lim Sang Hyoung Park Byong Duk Ye Suk-Kyun Yang Jin Cheon Kim Division of Colon and Rectal Surgery Department of Surgery University of Ulsan College of Medicine Asan Medical Center De-partment of Gastroenterology University of Ulsan College of Medicine Asan Medical Center

AIM To evaluate the risk factors for postoperative recurrence after primary bowel resection in a cohort of Korean Crohn's disease(CD) *** This study included 260 patients with no history of previous bowel surgery who underwent primary surgery for CD between January 2000 and December 2010 at Asan Medical Center(Seoul, South Korea). The median follow-up period was 101 *** During the follow-up period, 66 patients(25.4%) underwent a second operation for disease *** 1, 5 and 10 years after the first operation, the cumulative rate of surgical recurrence was 1.1%, 8.3% and 35.9% and clinical recurrence occurred in 1.2%, 23.6% and 68.1%, respectively. In multivariate analysis, undergoing an emergency operation was a significant risk factor for surgical recurrence-free survival(SRFS) [HR = 2.431, 95%CI: 1.394-4.240, P = 0.002], as were the presence of perianal disease after the first operation(HR = 1.715, 95%CI: 1.005-2.926, P = 0.048) and history of smoking(HR = 1.798, 95%CI: 1.088-2.969, P = 0.022). The postoperative use of antitumor necrosis factor(TNF) agents reduced SRFS risk(HR = 0.521, 95%CI: 0.300-0.904, P = 0.02).CONCLUSION History of smoking, postoperative perianal disease and undergoing an emergency operation were independent risk factors for surgical recurrence. Using anti-TNF agents may reduce surgical recurrence.

关键词： Crohn’s disease Recurrence Risk factor

Clinical significance of hepatic derangement in severe acute respiratory syndrome

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World Journal of Gastroenterology 2005年第14期11卷 2148-2153页

作者： Henry Lik-Yuen Chan Ambrose Chi-Pong kwan Ka-Fai To sik-To Lai Paul Kay-Sheung Chan Wai-Keung Leung Nelson lee Alan Wu Joseph Jao-Yiu Sung Department of Medicine and Therapeutics Chinese University of Hong Kong Hong Kong SARChina Department of Medicine Princess Margaret Hospital Hong Kong SARChina Department of Anatomical and Cellular Pathology Chinese University of Hong Kong Hong Kong SARChina Department of Microbiology Chinese University of Hong Kong Hong Kong SARChina

AIM:Elevation of alanine aminotransferase (ALT) level is commonly seen among patients suffering from severe acute respiratory syndrome (SARS). We report the progression and clinical significance of liver derangement in a large cohort of SARS patient. METHODS: Serial assay of serum ALT was followed in patients who fulfilled the WHO criteria of SARS. Those with elevated ALT were compared with those with normal liver functions for clinical outcome. Serology for hepatitis B virus (HBV) infection was checked. Adverse outcomes were defined as oxygen desaturation, need of intensive care unit (ICU) and mechanical ventilation and death. RESULTS: Two hundred and ninety-four patients were included in this study. Seventy (24%) patients had elevated serum ALT on admission and 204 (69%) patients had elevated ALT during the subsequent course of illness. Using peak ALT >5xULN as a cut-off and after adjusting for potential confounding factors, the odds ratio of peak ALT >5x ULN for oxygen desaturation was 3.24 (95%CI 1.23-8.59, P= 0.018), ICU care was 3.70 (95%CI 1.38-9.89, P= 0.009), mechanical ventilation was 6.64 (95%CI 2.22-19.81, P = 0.001) and death was 7.34 (95%CI 2.28-24.89, P= 0.001). Ninety-three percent of the survived patients had ALT levels normalized or were on the improving trend during follow-up. Chronic hepatitis B was not associated with worse clinical outcomes. CONCLUSION: Reactive hepatitis is a common complication of SARS-coronavirus infection. Those patients with severe hepatitis had worse clinical outcome.

关键词： SARS Hepatitis Hepatitis B virus Coronavirus

Characterization of transgenic mice expressing EGFP under the control of the monkey 20α-hydroxysteroid dehydrogenase promoter

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Science China(Life Sciences) 2018年第8期61卷 966-974页

作者： Chae-Won Park Seong-Keun Jeong Tsevelmaa Nanjidsuren Munkhzaya Byambaragchaa Myung-Hwa Kang Bo-Woong Sim kwan-sik Min Animal Biotechnology Graduate School of Future Convergence Technology Department of Animal Life Science Institute of Genetic Engineering Hankyong National University Department of Food Science and Nutrition Hoseo University National Primate Research Center Korea Research Institute of Bioscience and Biotechnology

To directly assess the molecular function of the monkey 20α-hydroxysteroid dehydrogenase （20α-HSD） promoter, we generated transgenic mice （tg） expressing enhanced green fluorescent protein （EGFP） under control of this promoter. We demonstrated that prostaglandin F2α induced 20α-HSD promoter activity in CHO cells in a dose-dependent manner. Furthermore, forskolin treatment markedly reduced 20α-HSD promoter activity, and prolactin exhibited weak inhibitory activity. The transgenic mouse obtained one positive founder male. The transgene was propagated in 10 successive generations without any notable defects to the progeny. EGFP and 20α-HSD in the tg mice were colocalized in the luteal cells of the ovary during late pregnancy. Strong EGFP and 20et-HSD protein signals were also detected in the adult testis. Immtmohistochemical analysis revealed high EGFP levels in the seminiferous epithelium, whereas 20α-HSD was expressed in the seminiferous tubules. Our data suggest that the ovaries in monkey and mouse exhibit similar expression patterns of 20α-HSD during pregnancy. However, the expression pattern of EGFP in tg mice testis slightly differed from that of the endogenous 20α-HSD. Further investigation is required to elucidate the functional mechanisms underlying regulation of the monkey 20α-HSD promoter in the tg mice.

关键词： transgenic mice EGFP monkey 20α-HSD promoter

Prevalence of premature ejaculation in young and middle-aged men in Korea： a multicenter intemet-based survey from the Korean Andrological Society

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Asian Journal of Andrology 2010年第6期12卷 880-889页

作者： Hyun Jun Park Jong kwan Park kwangsung Park Sung Won lee Sae-Woong Kim Dae Yul Yang DU Geon Moon Kweon-sik Min Ki-Hak Moon Sang-Kuk Yang Jae Seog Hyun Nam Cheol Park Deparment of Urology Pusan National University School of medicine Busan 602739 Korea Deparment of Urology Chonbuk National University Medical School Jeonju 561712 Korea Deparment of Urology Chonnam National University Medical School Gwangju 501746 Korea Deparment of Urology Sungkyunkwan Univer＆ty School of Medicine Seou1135 710 Korea Deparment of Urology Catholic University College of Medicine Seoul 137701 Korea Deparment of Urology Hallym University College of Medicine Seoul 13 7701 Korea Deparment of Urology Korea University College of Medicine Seoul 152703 Korea Deparment of Urology lnje University College of Medicine Busan 614735 Korea Deparment of Urology Yeungnam University College of Medicine Daegu 705717 Korea Deparment of Urology Konkuk University School of Medicine Chungju 380704 Korea Deparment of Urology Gyeongsang National University School of Medicine Jinju 660702 Korea

In this study, we aimed to investigate the prevalence and perception of premature ejaculation （PE） in young and middle-aged Korean men. The study was conducted using an Internet-assisted questionnaire. A total of 2 037 Korean male adults, aged 20 years or older, were randomly sampled based on age and residency. The questionnaire developed by the PE Study Group of the Korean Andrological Society includes four categories （overall sexual function, symptoms, distress and treatment） with a total of 16 questions. For each question, symptoms were evaluated by a scale ranging from 0 to 10. Intravaginal ejaculation latency time was ‘5-10 min＇ in 38.6%, followed by ‘longer than 10 min＇ in 2919%, ‘2-5 min＇ in 23.6%, ‘1-2 min＇ in 5.4% and ‘shorter than 1 min＇ in 2.5%. In our series, 27.5% of respondents reported having PE. Control over ejaculation within a recent 3-month period was 6.2 points on average. Respondent complaints of PE-related stress averaged 7.1 points and stress-related complaints from sexual partners averaged 7.1 points. The effect of PE on sexual life was 6.8 points. Of the respondents determined as having PE, 42.6% responded that they were inclined to receive treatment. Results from this study suggest that the prevalence of PE diagnosed by the respondent on his own was approximately 27.5% in young and middle-aged men in Korea. PE-related stress had a significant effect on the stress, sexual activity and quality of life of the respondent and his sexual partner.

关键词： epidemiology premature ejaculation questionnaire sexual dysfunction

Risk of gastric cancer is associated with PRKAA1 gene polymorphisms in Koreans

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World Journal of Gastroenterology 2014年第26期20卷 8592-8598页

作者： Yong-Dae Kim Dong-Hyuk Yim Sang-Yong Eom Sun In Moon Hyo-Yung Yun Young-Jin Song Sei-Jin Youn Taisun Hyun Joo-Seung Park Byung sik Kim Jong-Young lee Hee kwan Won Heon Kim Department of Preventive Medicine College of MedicineChungbuk National University Department of Surgery College of MedicineChungbuk National University Department of Internal Medicine College of MedicineChungbuk National University Department of Food and Nutrition Chungbuk National University Department of Surgery College of MedicineEulji University Department of Surgery Asan Medical CenterCollege of MedicineUlsan University Center for Genome Science National Institute of Health Department of Internal Medicine Division of Endocrinology and MetabolismSchool of MedicineKonyang University

AIM: To evaluate the association between genetic polymorphisms of the gene encoding AMP-activated protein kinase (PRKAA1) and the risk of gastric cancer.

关键词： AMP-activated protein kinase Gastric cancer PRKAA1 Single nucleotide polymorphism Case-control study

Direct modification of spermatogonial stem cells using lentivirus vectors in vivo leads to efficient generation of transgenic rats

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Asian Journal of Andrology 2019年第2期21卷 190-195页

作者： Bang-Jin Kim Yong-Hee Kim Myeong-Geun Oh Ki-Jung Kim Sang-Eun Jung Ju-Hee Jin Sun-Uk Kim kwan-sik Min Buom-Yong Ryu Department of Animal Scienee and Technology College of Biotechnology and Natural ResourcesChung-Ang UniversityAnseongGyeonggi-do 17546Korea National Primate Research Center Korea Research Institute of Bioscienee and BiotechnologyCheongjuChungcheongbuk-do 28116Korea Futuristic Animal Resource and Research Center Korea Research Institute of Bioscience and BiotechnologyCheongjuChungcheongbuk-do 28116Korea Animal Biotechnology Graduate School of Future Con verge nee Tech no logyDepartment of Animal Life ScienceInstitute of Genetic Engi neeringHankyong National UniversityAnseongGyeon ggi-do 17579Korea Department of Cancer Biology University of PennsylvaniaPhiladelphiaPA 19104USA.

Spermatogonial stem cells(SSCs)transmit genetic information to the next progeny in ***,SSCs are a potential target for germ I i ne modifications to gen erate tran sgenic an *** this study,we report a technique for the gen erati on of tran sgenic rats by in vivo manipulation of SSCs with a high success *** in juvenile rats were transduced in vivo with high titers of lentivirus harbori ng enhan ced green fluoresce nt protei n and mated with wild-type females to create foun der *** founder rats expressed the transgene and passed on the transgene with an overall success rate of 50.0%.Subsequent generations of progeny from the founder rats both expressed and passed on the ***,direct modification of SSCs in juvenile rats is an effective means of generating transgenic rats through the male *** technology could be adapted to larger animals,in which existing methods for gene modificatio n are in adequate or in applicable,resulti ng in the gen eration of tran sge nic an imals in a variety of species.

关键词： germline modification lentivirus spermatogonial stem cell testis transgenic animal