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Kyong-Hwa Jun(전경화),Yong-Sung Won(원용성),Gun-Hyung Na(나건형),Young-Jin Suh(서영진),Hyun-Min Cho(조현민),Woo-Bae Park(박우배),Hyung-Min Chin(진형민),Chung-Soo Chun(전정수) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.73 No.5
Purpose: E-cadherin (ECD) plays a pivotal role in integrating the normal tissue architecture and the suppression of cancer invasion, including stomach cancer. The epidemiology of stomach cancers is noticeably different according to the site of the index tumor, even though the stomach cancers all have similar gross shapes. In this study, the relation between the expression of ECD, along with the clinicopathologic parameters and recurrence or survival, were investigated for patients with gastric adenocarcinoma according to the tumor location. Methods: We examined formalin-fixed, paraffin-embedded archival tissues from 50 surgically resectable gastric adenocarcinomas, which were grouped by the index tumor site as follows: distal (antrum) versus proximal (mid and upper body). To elucidate the correlation between the ECD expression and the site of the stomach cancer with the other clinicopathologic factors, we examined the ECD tissue status via performing immunohistochemistry. To compare the rates of recurrence and survival among subgroups, the patients were followed up for an average of 42 months. Results: Among the 50 tumors examined, 28 (56%) tumors showed various degrees of a ECD expression. The gender, age, size, depth of invasion, lymph node metastasis, stage, lymphatic invasion and vascular invasion were not related with the ECD expression. The Lauren classification was correlated with the ECD expression in the mid and upper body stomach cancer, but not in the antral stomach cancer (P=0.042). The expression of ECD was not related with the survival rate (P=0.223). There was no significant difference in the recurrence rate between the subgroups with and without an abnormal expression of ECD (P=0.588). Conclusion: For the mid and upper body stomach cancer, the expression of E-cadherin correlated with the diffuse type of cancer, according to the Lauren classification, but not with the survival rate.
An Experimental Study of Pressure Drop Correlations for Wire-Wrapped Fuel Assemblies
Chun, Moon-Hyun,Seo, Kyong-Won,Park, Seok-Ki,Nam, Ho-Yun The Korean Society of Mechanical Engineers 2001 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.15 No.3
The main objective of the present study is to perform an experimental evaluation of five existing correlations for the subchannel pressure drop analysis of a wire-wrapped fuel assembly. For this purpose, a series of water experiments have been performed using a helical wire-wrapped 19-pin fuel assembly for various test parameters. Four different test sections with different pitch to rod diameter ratios (P/D) and wire lead length to rod diameter ratios (H/D) have been fabricated. A series of pressure drop measurements were made to obtain friction factors for these four test sections. The new data along with existing data are used to evaluate existing correlations. Both the original and the simplified Cheng and Todreas correlations give the best agreement with experimental data for all flow regions.
Hong, Kyong-Aie,Yang, Jae-Wook,Chun, Soo-Joon,Ha, Eun-Young,Kim, Joong-Hyup,Chun, Moon-Woo,Chung, Won-Keun The Pharmaceutical Society of Korea 1991 Archives of Pharmacal Research Vol.14 No.1
The synthetic study of 3',5-cyclic phosphates of 2'-substituted 2',3'-secouridines and 2',3'-secoribavirins toward development of new antiviral agents is described. These cyclic phosphates were synthesized from their respective 4-nitrophenyl 3',5'-cyclic phosphate triesters. These triesters were prepared from the corresponding 2'-azido and 2'-bromo 2',3'-seconucleosides.
증례 / 간이식 환자에게서 발생한 이식 후 림프세포 증식성 질환 2예
백경란(Kyong Ran Peck),박정호(Jung Ho Park),박상종(Sang Jong Park),김춘관(Chun Kwan Kim),이혁(Hyuck Lee),김성민(Sung Min Kim),송재훈(Jae Hoon Song),김성주(Sung Joo Kim),조재원(Jae Won Joh),이석구(Suk Koo Lee),고영혜(Young Hyeh Ko) 대한내과학회 1999 대한내과학회지 Vol.56 No.3
The posttransplantation lymphoproliferative disorders (PTLD) are not rare complications of solid organ transplants. The incidence varies with the type of transplantation and the nature and intensity of the immunosuppressive regimens. PTLDs are unique in that they have a predilection for extranodal sites, a strong and probably causal association with Ebstein-Barr virus infection, and a poor response to the cytolytic chemotherapeutic or irradiation regimens used for treatment of malignant lymphoma. The outcomes of treatment have been disappointing, with mortality from PTLD or related complications of over 50% of patients. We experienced two cases of PTLDs in liver transplant recipients presenting with liver mass and intraabdominal lymphadenopathy. PTLDs were diagnosed by autopsy and a liver biopsy. In the case diagnosed by a liver biopsy, EBV was detected by in situ hybridization. Despite reduction of immunosuppression and conservative management, both patients died.