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( Hee Yeon Kim ),( Jong Young Choi ),( Chung Hwa Park ),( Do Seon Song ),( Myeong Jun Song ),( Jeong Won Jang ),( Jung Hyun Kwon ),( Chan Ran You ),( Si Hyun Bae ),( Seung Kew Yoon ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.1
Background: Several studies demonstrated that preemptive antiviral therapy reduced hepatitis due to hepatitis B virus (HBV) reactivation and hepatic morbidity during transarterial chemo-lipiodolization (TACL) in HBV-related hepatocellular carcinoma (HCC) patients. However, the efficacy of antiviral therapy on survival in patients with HBV-related HCC is still unclear. The aim of this study is to evaluate the long-term outcome of antiviral therapy in HBV-related HCC undergoing TACL. Methods: From January 2003 to May 2007, 177 newly diagnosed HBV-related HCC patients underwent TACL were retrospectively enrolled in the study. Among these, 66 patients received preemptive lamivudine therapy during TACL while others had not taken antiviral therapy until viral reactivation. Results: During the median follow-up of 11.1 months, 57 (50.3%) patients developed HBV reactivation in the control group and 14 (24.3%) patients developed viral breakthrough in the lamivudine group. Hepatitis attributed to HBV reactivation or viral breakthrough was occurred in 35 (30.9%) patients among the control group and in 10 (15.2%) patients among the lamivudine gtroup. Multivariate analysis identified age >50 years (p=0.002), reactivation or viral breakthrough (p=0.036) and UICC stage IV (p<0.001) to be independent predictors of overall survival. In the stratified analysis according to the UICC stage, preemptive lamivudine therapy did not influence on the overall survival. Conclusions: Preemptive lamivudine therapy can reduce the HBV reactivation in HBsAg-positive HCC patients receiving TACL. However, preemptive lamivudine therapy also raised concerns about viral breakthrough due to HBV mutation. Preemptive lamivudine therapy did not showed long term efficacy on the survival.
Neuroinflammation Inhibitory Effect of Complex Composition Based on Red Ginseng
You Jin Lee(이유진),Dayu Jung(정다유),Gyeong Hee Lee(이경희),Jin Sung Kim(김진성),Won Yong Kim(김원용),Yun Ho Jo(조윤호),Ji Sun Lee(이지선),Mi Kyung Pyo(표미경),Dae Seok Yoo(유대석),Sang Won Cho(조상원),Seon Woo Cha(차선우) 한국약용작물학회 2019 한국약용작물학회 학술대회논문집 Vol.2019 No.2
Won, Dong-Seon,Kim, Jin-Hyang,No, Hyo Jin,Cho, You Jin,Lee, Ju-Yeon,Rhee, Bum Ku,Choi, Hee-Dok John Wiley Sons, Ltd. 2010 Polymer international Vol.59 No.2
<P>Stabilization of electrically induced dipole alignment is one of the important criteria in the development of nonlinear optical (NLO) polymers for electro-optic device applications. Polyurethanes for NLO applications have attracted attention because of their high thermal stability due to hydrogen bonding. In the work reported here, we designed and synthesized a new type of NLO polyurethane, in which the pendant NLO chromophores are part of the polymer backbone. This mid-type NLO polymer is expected to have the merits of both main-chain and side-chain NLO polymers, namely stable dipole alignment and good solubility. 1-[3,4-Di-(2-hydroxyethoxy)phenyl]-2-(2-thienyl)ethene was prepared and condensed with 3,3′-dimethoxy-4,4′-biphenylenediisocyanate to yield a polyurethane. This polyurethane was reacted with tetracyanoethylene to give a novel Y-type polyurethane (7) containing 1-(3,4-dioxyphenyl)-2-[5-(1,2,2-tricyanovinyl)-2-thienyl]ethenes as NLO chromophores, which constitute part of the polymer backbone. Polyurethane 7 is soluble in common organic solvents such as N,N-dimethylformamide and dimethylsulfoxide. It shows a thermal stability up to 280 °C from thermogravimetric analysis with a glass transition temperature obtained from differential scanning calorimetry of ca 162 °C. The second harmonic generation (SHG) coefficient (d<SUB>33</SUB>) of a poled polymer film of he polyurethane at 1560 nm fundamental wavelength is ca 1.11 × 10<SUP>−18</SUP> C. Polymer 7 exhibits an enhanced thermal stability and no significant SHG decay is observed below 150 °C, which is acceptable for NLO device applications. Copyright © 2009 Society of Chemical Industry</P> <B>Graphic Abstract</B> <P>A novel Y-type polyurethane containing 1-(3,4-dioxyphenyl)-2-{5-(1,2,2-tricyanovinyl)-2-thienyl}ethenes as NLO-chromophores exhibited SHG coefficient (d<SUB>33</SUB>) of 1.11 × 10<SUP>−18</SUP> C at 1560 nm fundamental wavelength with enhanced thermal stability of SHG up to 150°C, which is acceptable for nonlinear optical device applications. <img src='wiley_img/09598103-2010-59-2-PI2702-gra001.gif' alt='wiley_img/09598103-2010-59-2-PI2702-gra001'> </P>
You-Chan Bae,Gye-Hyeong Woo,Ha-Young Kim,Moon Her,Dong-Hee Cho,Suk-Chan Jung,Jae-Ku Oem,Jae-Won Byun,Yi-Seok Joo,O-Soo Lee,Myoung-Heon Lee 한국예방수의학회 2012 예방수의학회지 Vol.36 No.3
Bovine brucellosis causes abortion and infertility. The authors conducted this study in order to determine pathological lesions of Korean native cows and fetuses who received experimental vaccination with Brucella abortus RB51 and were challenged with Brucella abortus 2308. Gross and histopathological lesions in endometrium and placenta were observed in cows of the vaccinated group. Twenty-five percent of pregnant cattle in the vaccinated group showed endometritis and placentitis, which was three times lower, compared with the non-vaccinated group. The pathological lesions in the uterus and placenta in both groups were consistent with previous reports. Therefore, vaccination in heifers using Brucella abortus RB51 may not provide adequate protection against infection with Brucella abortus virulent strain.
New clinical score for disease activity at diagnosis in Langerhans cell histiocytosis
Won-ik Choi,You Cheol Jeong,Sun Young Kim,So Dam Kim,John Paul Pribis,Hee-Jin Kim,고경남,임호준,이영호,서종진 대한혈액학회 2011 Blood Research Vol.46 No.3
Background :The clinical presentation and course of Langerhans cell histiocytosis (LCH) are variable, ranging from an isolated, spontaneously remitting bone lesion to multisystem disease with risk organ involvement. Treatment of LCH ranges from a wait-and-see attitude to intensive multidrug therapy and, in some cases, bone marrow transplantation. It is necessary to develop an objective score for assessing disease activity in patients with LCH. We propose a new clinical scoring system to evaluate disease activity at diagnosis that can predict the clinical outcomes of LCH and correlate it with clinical courses. Methods :Clinical data, obtained from children diagnosed with LCH at Asan Medical Center and Hanyang University Hospital between March 1998 and February 2009, were studied retrospectively. The scoring system was developed according to the basic biological data, radiological findings, and physical findings and applied to a database containing information on 133 patients. Results :The median age of the 133 patients (74 male, 59 female) was 52 months (range, 0.6-178 months), and LCH was diagnosed based on CD1a positivity. At diagnosis, the score distributions were highly asymmetrical: the score was between 1 and 2 in 75.9% of cases, 3-6 in 15.8%, and greater than 6 in 8.3%. Initial scores above 6 were highly predictive of reactivation and late complications. Conclusion :This new LCH disease activity score provides an objective tool for assessing disease severity, both at diagnosis and during follow-up.
( You Jin Chang ),( Seung Won Ra ),( Eun Jin Chae ),( Joon Beom Seo ),( Won Young Kim ),( Shin Na ),( Joo Hee Kim ),( Tai Sun Park ),( Soo Kyung Park ),( Seong Joon Park ),( Tae Hoon Lee ),( Young Che 대한결핵 및 호흡기학회 2011 Tuberculosis and Respiratory Diseases Vol.71 No.2
Unilateral pulmonary artery hypoplasia (UPAH) is a rare disease in adults and is frequently accompanied by a congenital cardiac anomaly at a young age. The diagnosis is usually based on computed tomography (CT), angiography, and magnetic resonance imaging (MRI). However, no reports are available on retrograde flow in patients with UPAH. We describe a 68-year-old man with isolated UPAH and retrograde blood flow. He was admitted for dyspnea on exertion for the past 23 years. His diagnosis was delayed, as his symptoms and signs mimicked his underlying pulmonary diseases, such as emphysema and previous tuberculous pleurisy sequelae. A discrepancy was detected between the results of a ventilation-perfusion scan and the CT image. This was resolved by MRI, which showed retrograde blood flow from the right to the left pulmonary artery. Using MRI, we diagnosed this patient with isolated pulmonary artery hypoplasia and retrograde flow.