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( Myung Jin Lee ),( Kye Hyung Kim ),( Jong Youn Yi ),( Su Jin Choi ),( Chung Jong Kim ),( Nak Hyun Kim ),( Kyoung Ho Song ),( Pyoeng Gyun Choi ),( Ji Hwan Bang ),( Wan Beom Park ),( Eu Suk Kim ),( San 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
In Vitro Antiviral Activity of Ribavirin Against Severe Fever with Thrombocytopenia Syndrome Virus Myung Jin LEE1, Kye-Hyung KIM1, Jongyoun YI2, SuJin CHOI1, Chung-Jong KIM1, Nak- Hyun KIM1, Kyoung-Ho SONG1, Pyoeng Gyun CHOI1, Ji-Hwan BANG1, Wan Beom PARK1, Eu Suk KIM1, Sang-Won PARK1, Hong Bin KIM1, Nam Joong KIM1, Myoung- Don OH1 Seoul National University College of Medicine, Korea1, Pusan National University School of Medicine, Korea2 Background: Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by a novel Bunyavirus, severe fever with thrombocytopenia syndrome virus (SFTSV). No effective antiviral therapy is proven yet, but clinical use of ribavirin (RBV) has been tried. We investigated the antiviral effect of RBV against SFTSV in vitro. Methods: To test for cytotoxicity of RBV, Vero cells were treated with different concentrations of RBV (3.90 to 500 μg/mL, two-fold dilution) and analyzed by cell viability MTS assay 48h post-infection. To determine antiviral activity of RBV against SFTSV, Vero cells were infected with SFTSV strain Gangwon/Korea/2012 at 100 TCID50 (50% tissue culture infective dose) per well in a 96-well plate, and RBV was added at the concentrations showing no or minimal cytotoxicity. Viral RNAs were extracted from the culture supernatants and quantifi ed using one-step real-time reverse transcription- PCR to amplify the partial large segment of SFTSV. Statistical analysis was done by one-way ANOVA with Tukey`s post hoc test. Results: Cytotoxicity due to RBV was not observed at RBV concentration =31.3 μg/ mL. Viral RNAs at 24h post-RBV treatment were reduced with increasing RBV concentrations (1-32 μg/mL), compared with those of mock-treated cells (P <0.01, Figure). Half maximal inhibitory concentration (IC50) of RBV was 3.69 μg/mL at 24h post-RBV treatment. Conclusions: Our study shows that RBV has antiviral effect against SFTSV in a dose-dependent manner. Further studies are required to evaluate the effi cacy of RBV in SFTS.
서광수,이명석 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1
천안시 백석동 3공단의 유적지에서 화분포자화석 연구를 위하여 8개의 시료를 채취하였다. 8개의 시료(試料)중 1개의 시료 (시료 3146)만이 소나무속(Pinus)이 압도적으로 산출되는 현재와 유사한 식생을 나타낸다. 전반적으로 균류(fungi; 菌類)의 산출이 많고 돌기체(突起體)를 갖는 2세포 균류 포자(胞子)가 특징적으로 산출된다. 또한 Gentianaceae/Euphorbiaceae 와 연관된 종류로 생각되는 다양한 형태의 화분이 국부적(局部的)인 식생을 반영해서 전체 시료 중 상당량 관찰된다. Eight samples for analysis of spore and pollen are collected from the archeological site in Baegsuchdong of Chunan. Korea. Numbers of specimen of Genus Pinus are yielded in the samples (sample No.3146), and their flora are similar to those of recent. Distinctive characters of flora are many fungi and two cell fungi pollens with projection. Gentianaceae/Euphorbiaceae and similar flora of those are yielded from many samples.
서광수,이명석 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1
충청남도 공주시 탄천면 안영리 산디골의 유적지 발굴 현장에서 15개의 시료를 채취해 화분 분석을 실시하였다. 대부분의 시료에서 포자화분의 산출이 불량한 가운데, 두 개의 시료(시료 3011, 3012)에서 100개 이상의 포자화분이 관찰되어 정량분석을 실시하였다. 포자화분 식물군은 소나무속을 제외한 수목화분이 거의 산출되지 않은 가운데, 벼과를 비롯한 초본화분의 우세가 특징이다. 또한 미식물군의 산출이 빈약한 시료에서도 담수성 조류가 소수 산출되었고, 한 시료에서는 숯의 흔적이 관찰되었다. 이들을 종합할 때 유적지 부근에서 산출된 포자화분군은 하천이나 연못의 영향을 받는 퇴적환경에서 인간의 경작 활동으로 형성된 식생의 결과일 것으로 생각된다. Fifteen samples for analysis of spores are collected from the archeological site in Anyoungri of Kongju. Korea. Spore pollen are rare in most of samples, but are yielded a hundred or more at two samples(sample No. 3011, 3012). They mainly consisted in the spores and pollens of Pinaceae of trees and herbaceous plant. A small number of algae and diatom of fresh water are collected from a sample, also charcoal from another sample. Summing up, paleo-environment of the acheological site is estimated at farming activities influenced by the river or pond based on spore pollen.
구강외과 수술용 스텐트 기반 영상유도 수술 시스템의 개발
이우진,김대승,이원진,이삼선,최순철,허민석,허경회,김명진,이지호 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.3
Purpose : The purpose of this study was to develop a stent-based image guided surgery system and to apply it to oral and maxillofacial surgeries for anatomically complex sites. Materials and Methods : We devised a patient-specific stent for patient-to-image registration and navigation. Threedimensional positions of the reference probe and the tool probe were tracked by an optical camera system and the relative position of the handpiece drill tip to the reference probe was monitored continuously on the monitor of a PC. Using 8 landmarks for measuring accuracy, the spatial discrepancy between CT image coordinate and physical coordinate was calculated for testing the normality. Results : The accuracy over 8 anatomical landmarks showed an overall mean of 0.56±0.16 mm. The developed system was applied to a surgery for a vertical alveolar bone augmentation in right mandibular posterior area and possible interior alveolar nerve injury case of an impacted third molar. The developed system provided continuous monitoring of invisible anatomical structures during operation and 3D information for operation sites. The clinical challenge showed sufficient accuracy and availability of anatomically complex operation sites. Conclusion : The developed system showed sufficient accuracy and availability in oral and maxillofacial surgeries for anatomically complex sites. (Korean J Oral Maxillofac Radiol 2009; 39 : 149-56)