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토픽 맵 기반의 지능적 웹서비스 발견 시스템 설계 및 구현
황윤영(Yun-Young Hwang),유정연(Jeong-Youn Yu),유소연(So-Yeon Yo),이규철(Kyu-Chul Lee) 한국전자거래학회 2004 한국전자거래학회지 Vol.9 No.4
현재, 많은 연구가 진행되고 있는 시맨틱 웹 서비스 발견 기술은 DAML-S와 MIT의 Process Handbook 프로젝트의 온톨로지를 기반하고 있다. 하지만, 이러한 발견 기술들은 현재 상황에서 지능적으로 웹 서비스를 발견하기 위해서는 여러 가지 제약 상황을 가지고 있다. 따라서 본 논문에서는 지능적 웹 서비스 발견을 위해 시맨틱 웹 서비스 발견 기술에 이용되는 기존의 온톨로지를 분석하였으며, 기존의 온톨로지가 가지는 장점을 수용하면서 단점을 보완하는 시맨틱 웹 서비스 표현 모델과 지능적 웹서비스 발견이 가능하도록 질의 언어를 제안하였다. Currently, developed technologies for semantic web services discovery are based on ontologies. These ontologies are DAML-S(DARPA Agent Markup Language for Services) and Process Handbook Project of MIT. These technologies have some problems for intelligent web services discovery. So, in this paper we analyzed those ontologies and proposed TM-S, Topic Maps for Services. TM-S is the presentation model for semantic web services. And TM-S includes benefits and complements weaknesses of those ontologies. And we proposed TMS-QL, TM-S Query Language. TMS-QL is query language for intelligent web services discovery. At last, we designed and implemented intelligent web service discovery system that deals TM-S ontology and TMS-QL.
선행 제왕절개술 후의 질식 분만 - 10 년간의 연구 -
나영정(Young Jeong Na),구미경(Mi Kyung Koo),박문일(Moon Il Park),김경태(Kyung Tai Kim),정성로(Sung Ro Chung),황윤영(Youn Yeung Hwang),문형(Hyung Moon),이유경(Yoo Kyoug Lee) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.3
Objective: Recently, enormous amount of the studies about trial of labor after cesarean section has been reported to decrease the rate of cesarean section. This study focused on analyzing multiple variables and results to acknowledge the safety and complications of VBAC (vaginal birth after cesarean section). Methods & materials: This study was performed based on 97 pregnant women who were tried vaginal delivery after cesarean section at Hanyang University Hospital from January 1990 to December 1999.The age of mother, gestational age, estimated fetal body weight by ultrasonography, neonatal body weight, cervical dilatation, cervical effacement, Bishop score, the number of previous vaginal delivery, complications of mother, and complications of fetus were analyzed between successful group (82 patients)and failure group (15patients)with trial of labor. Student T-test and Chi-square test were used for statistical analysis. Results: In the 97 cases with trial of labor after cesarean, the success rate was 84.5%and failure rate was 15.5%. The estimated fetal body weight by ultrasonography, cervical dilatation and effacement, Bishop score, Apgar score had notable differences between successful group and failure group, while the other factors had not. There was no maternal death or uterine rupture in the cases of trial of labor. Conclusion: Trial of labor after cesarean section is relatively safe method of delivery if it is performed under strict indication. It could be suggested that VBAC has relatively little complication in both mother and fetus. The studies with large populations and performed by multi-centers will be needed for the evaluating safety of VBAC and developing safe protocols to decrease the risk of complications.
난소암 세포주와 cisplatin 내성주에서의 MDR 관련 유전자의 발현에 관한 연구
문영진(Young Jin Moon),황윤영(Youn Yeung Hwang),이재규(Jai Kyu Lee),나영정(Young Jeong Na),이영미(Young Mi Lee),장성렬(Sung Yeoul Chang),조삼현(Sam Hyun Cho),김경태(Kyung Tai Kim) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.9
Objective : Expressions of P-glycoprotein, the multidrug resistance-associated protein (MRP) and the lung resistance protein (LRP) with the MDR phenotype widely divergent in human cancer cell lines. This study focused on the altered gene expression related drug transport. Methods : To examine correlations between MDR-associated genes and PKC isozyme with cisplatin resistance on the level of the mRNA expression, we analyzed MDR-associated gene (LRP, MDR1/P-gp and MRP) expression and PKC isozyme, topoisomerase II alpha and beta in cisplatin-sensitive ovarian cancer cell line A2780 and cisplatin - resistant cell line A2780cp using cDNA-PCR approach. Results : LRP mRNA levels were significantly increased in A2780cp compared to the drug sensitive variant. In contrast, MRP mRNA levels were not significantly correlated with drug sensitivity. A modest increase in PKCη and MDR1/P-gp mRNA expression activity was also observed in ovarian cancer A2780cp cell lines that were resistant to CDDP. The level of topoisomerase II alpha and beta were not affected. Conclusion : These results showed that MDR1/P-gp expression may be an important determinant of the MDR phenotype in cell lines intrinsically resistant to cancer chemotherapeutic agents and a multifactorial emergence of MDR phenotype of tumor with a possible involvement of the PKC isozymes may be associated with CDDP resistant ovarian cancer cell line.
제왕절개술 후 발생한 T3 Thyrotoxicosis 1 예
성영모(Young Mo Sung),윤상순(Sang Soon Yoon),구미경(Mi Kyung Koo),황정혜(Jung Hye Hwang),박문일(Moon Il Park),정성노(Sung Ro Chung),황윤영(Youn Yeung Hwang),문형(Hyung Moon),이재웅(Jae Ung Lee),안유헌(You Hern Ahn) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.10
Thyroid storm (thyrotoxicosis) is rarely encountered during pregnancy or the puerperium, even in untreated women and characterized by hypertension, hyperthermia, and multiple systems involvement. Much more common is heart failure, apparently caused by the long-term myocardial effects of thyroid hormone and intensified by other pregnancy complications that include severe preeclampsia, infection, anemia, or combinations of these. Prompt diagnosis and treatment of thyroid storm are essential in reducing morbidity and mortality of a patient from this disorder. We experienced a case of triiodothyroxine induced thyroid storm (T3 thyrotoxicosis) developed after Cesarean section. This case highlights both physicians should be aware of the symptoms and risk factors and reversing of heart failure successfully by reducing cardiac workload is important through immediate medical treatment-adequate hydration, thermoregulation, and control of hypertension, infection and anemia et al.
성영모(Young Mo Sung),호정규(Jeong Kyu Hoh),이용태(Yong Tae Lee),황정혜(Jung Hye Hwang),이정한(Jung Han Lee),박문일(Moon Il Park),김승룡(Seung Ryong Kim),문영진(Young Jin Moon),문형(Hyung Moon),황윤영(Youn Yeung Hwang),장세진(Se Jin 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.9
Accessory tubes are a congenital and developmental Mullerian duct abnormality of fallopian tubes. Due to their morphological abnormality, the accessory tubes predispose to the occurrence of ectopic pregnancy, infertility and tubal torsion among others and can lead to life-threatening conditions. We are reporting two recent cases of tubal pregnancies with accessory tubes together with literature reviews.
부인암 세포주에서 항암제 투여에 따른 신생혈관 형성 관련 유전자 전령 리보핵산 및 단백질 표현 양상에 관한 연구
김영재 ( Young Jae Kim ),공미숙 ( Mi Sook Kong ),이영미 ( Young Me Lee ),장성렬 ( Sung Yeoul Chang ),김승룡 ( Seung Ryong Kim ),김경태 ( Kyung Tai Kim ),황윤영 ( Youn Yeung Hwang ),조삼현 ( Sam Hyun Cho ) 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.3
Objective: Angiogenesis is central role to both the proliferation and metastasis of malignant tumor. The intense interest in angiogenesis has also lead to a re-examination of the activity of established cytotoxic agents which are known to be an antiangiogenic effect anecdotally. In this study, anti-angiogenic effect of cisplatin, paclitaxel and thalidomide was evaluated in human ovarian cancer cell lines and cervical cancer cell line. Methods: Human ovarian cancer cell line A2780, cisplatin resistant human ovarian cancer cell line A2780-CDDP, human breast cancer cell line MCF-7, and squamous cell uterine cervical carcinoma cell line SiHa were used to evaluate the level of mRNA and protein expression of VEGF, bFGF and TSP-1, 2 before and after the treatment with cisplatin, paclitaxel, and thalidomide using RT-PCR, protein extraction, and Western blot. The results were analyzed with Wilcoxon signed rank test in the SAS ver 8.1. Results: Targeted mRNAs were synthesized as 212 bp VEGF, 238 bp bFGF, and 492 bp band sized except mRNA of TSP-2 via RT-PCR. The protein of VEGF and bFGF were appeared as 21KDa and 17 KDa size, however, the protein of TSP-1 was not appeared through western blot. No effect of cisplatin on protein expression was measured in these cell lines, but paclitaxel influenced the expression of bFGF in MCF-7 cell line and the expression of TSP-1 in MCF-7 and SiHa cell lines. TSP-1 expression was influenced by thalidomide in A2780 cell line. The protein expression of VEGF and bFGF were not influenced following treatment with cisplatin, paclitaxel, and thalidomide. Conclusion: These results were suggested that bFGF and TSP-1 will be used as a target gene for the assay of antiangiogenic effect of paclitaxel in breast and uterine cervical cancer tissue and TSP-1 will be used as that of thalidomide in ovarian cancer. Furthermore, thalidomide will be tried as an adjunctive agent for the improvement of the survival in the case of the patient with ovarian cancer.
프로게스테론과 프로게스틴이 인간 제대 정맥 내피세포의 세포 고사에 미치는 영향
류기영(Ki Young Ryu),박영준(Young Joon Park),권희선(Hee Sun Kwon),나영정(Young Jeong Na),조수현(Soo Hyun Cho),조삼현(Sam Hyun Cho),황윤영(Youn Yeung Hwang) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.10
Objective : The addition of progesterone/progestin is mandatory in women with intact uterus for postmenopausal hormone replacement therapy. However, debate is continuing on whether there is an impact of progesterone/progestin on the hormone replacement therapy for cardiac protection. The aim of this study was to investigate the effect of progesterone/progestin and combination with estrogen on the apoptosis of vascular endothelial cells, which has been demonstrated to be an initial step in the development of atherosclerosis. Material and methods : Human Umbilical Vein Endothelial Cells (HUVEC) were cultured. HUVEC apoptosis was induced by Tumor Necrosis Factor-α (TNF-α) (50 ng/ml). 10-7M of estradiol (E2), progesterone (P4), medroxyprogesterone acetate (MPA) and norethindrone acetate (NETA) were added in to the culture media. The percentage of apoptotic HUVEC were measured by 3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay and Fluorescence Activated Cell Sorting (FACS) analysis. Results : MTT assay demonstrated a significant decrease in percent of survival cells after 24 hours of TNF-α exposure and a reversal of the effect of TNF-α with E2 treatment. P4, MPA and NETA treatment also reversed the effect of TNF-α. The protective effect of E2 and P4 were not different. Compared to the E2 treatment, the percent of survival cell were decreased when P4, MPA and NETA were added to E2 treatment, respectively. Similarly, FACS analysis revealed 44.0±2.6% apoptosis after 24 hours of TNF-α exposure. Treatment with E2 resulted a significant decrease (28.4±2.9%, p<0.05) in apoptosis. P4 (33.6%±2.6%, p<0.05), MPA (35.7±1.3%, p<0.05), NETA (34.0±3.3%, p<0.05) treatment also showed a reduction of cell death. The percent of apoptotic cells between E2 and MPA treatment was significantly different. The addition of P4 (36.0±2.5%), MPA (36.3±1.9%) and NETA (37.0±2.0%) to E2 treatment significantly increased the percent of apoptotic cells compared to those of E2 treatment. Conclusion : These results suggested that not only estradiol, but also progesterone, MPA and NETA inhibited HUVEC apoptosis. But the effect of estrogen on the inhibition of HUVEC apoptosis was attenuated in combination treatment of estrogen and progesterone/progestin.