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( Ji Hyun Lee ),( Jeong In Lee ),( So Yeon Park ),( Yoo Kyeong Jang ),( You Bin Lim ),( Hye Yoon Lee ),( Young Min Jung ),( Hae Chang Lee ),( Jong Hwa Lee ),( Shaheen Amna ),( Jae Kweon Park ) 한국키틴키토산학회 2019 한국키틴키토산학회지 Vol.24 No.1
The present study was aimed to isolate the bacteria producing chitinolytic enzymes including chitin deacetylase (CDA) from soil origin. About 24 bacteria were screened for their chitinolytic enzymes producing ability on the basis of colloidal chitin. Amongst one of the most potent isolates designated to JI-02 was further selected as the most prominent chitinolytic and CDAlike enzyme (CDA-X) producer based on the ability of deacetylation of an artificial substrate pNP-acetamilide. The maximum production of CDA-X in crude enzyme from JI-02 was observed in the presence of 1% colloidal chitin at 37°C and pH 6.4 after 120 h of incubation. Potent enzyme activity of CDA-X was determined toward pNP-acetamilide, demonstrating that optimal pH, temperature and ionic strength of the CDA-X were assessed to be 7.0, 52°C and 125 mM, respectively. Unexpectedly, Nacetylglucosamine (GlcNAc) was not fully converted by the action of CDA-X to glucosamine (GlcN) under the established conditions. Further study on enzyme activity toward chitin-oligosaccharides consisting of multi-N-acetylglucosamine (GlcNAc)n, n=2-5 may be necessary to elucidate the mode of action which requires the minimum size of (GlcNAc)n. However, our data suggest that CDA-X can convert chitin to chitosan with the maximum yield of approximately 0.08g/L during the fermentation of the strain in the presence of chitin. Furthermore, we found that crude enzyme showed the significant chitosanolytic activity. Taken together, our data suggest that the strain JI-02 may be a potential candidate as a particular strain for better understating of chitin catabolic pathway.
Multiplex PCR Detection for 3 Events of Genetically Modified Maize, DAS-59122-7, TC6275, and MIR604
Ji-Hye Ahn,Jae-Hwan Kim,Su-Youn Kim,Woo-Young Lee,Sun-Hee Park,Hae-Yeong Kim 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.3
A multiplex polymerase chain reaction (PCR) method was developed to simultaneously detect 3 events of genetically modified (GM) maize. The event-specific primers were used to discriminate the following 3 events of GM maize (DAS-59122-7, TC6275, and MIR604) using multiplex PCR method. The zein gene was used as an endogenous maize reference gene in the multiplex PCR detection. The primer pair Zein-F/R producing a 99 bp amplicon was used to amplify the zein gene. The primer JI-Das-F1/R1 for DAS-59122-7, JI-TC6275-F3/R3 for TC6275, and JI-MIR F1/R1 for MIR604 yielded an amplicon of 130, 162, and 197 bp, respectively. The detection limit of multiplex PCR was 1% for DAS-59122-7, TC6275, and MIR604 for one reaction.
Sarcomatoid Carcinoma Arising from Mature Cystic Teratoma
Ho-Chang Lee1, Seung-Myoung Son, Yong-Moon Lee, Ji Hae Koo, Song-Yi Choi, Ok-Jun Lee, Eun-Hwan Jeong 충북대학교 동물의학연구소 2012 Journal of Biomedical and Translational Research Vol.13 No.2
Malignant transformation of mature cystic teratoma (MCT) is rare. Sarcomatoid carcinoma is a neoplasm comprising malignant mesenchymal cells and a conventional carcinomatous area. Here, we report on a case of sarcomatoid carcinoma arising from an MCT in the left ovary of a 45-year-old female. A unilocular cyst consistent with MCT was observed; however, a nodule within the cyst was confirmed from the resected ovary. Microscopically, the nodule showed both squamous cell carcinoma and pleomorphic sarcomatous components admixing with each other. Lining epithelial cells at the periphery of the main tumor showed squamous metaplasia. When a sarcomatous component is observed in the ovary tumor, it is important to find a squamous cell component, either benign or malignant.
서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
젊은 성인에서 흡연에 의한 상완동맥 내피기능의 부전에 관한 연구
이상철,권영주,방덕원,이선해,이보영,김지욱,김영훈,온영근,현민수,김성구 순천향의학연구소 2002 Journal of Soonchunhyang Medical Science Vol.8 No.1
Background and Objectives : Cigarette smoking is a major factor and the most modifiable risk factor for atherosclerosis. Endothelial dysfunction is an early event in atherosclerosis, before the structural change of the systemic arteries. We hypothesized that endothelial dysfunction might be present in the systemic arteries of young adult smokers and that this might be dose-dependent phenomenon. Therefore, we try to certify that smoking is associated with endothelial dysfunction in healthy young adults without other risk factor of atherosclerosis. Subjects and Methods : we studied noninvasively 29 subjects aged 3 to 4 decades without other risk factor of atherosclerosis, they were composed of the two groups, current smokers(n=15) and nonsmokers(n=14). Smoking history varied from 3 to 20 pack years. Using high-resolution ultrasound, vessel diameter and mean flow rate were measured at rest, during reactive hyperemia(with flow-mediated endothelium-dependent dilation), and after sublingual nitroglycerin(NG-induced endothelium-independent vasodilation). Result : Flow mediated endothelium dependent dilation was observed in the control subjects (9.4±3.44%) but was impaired in the smokers(5.8±2.51%)(p=0.004). NG-induced endothelium independent dilation is no difference in all subjects. Conclusion : Cigarette smoking is associated with endothelial dysfunction in healthy young adults.
이주연,이무석,윤진상,양종철,문지웅,정해원,은성종 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.6
Objectives : The purpose of this study was to investigate the stress coping strategies and psychological charactehstics, such as combined psychopathology and tendency of symptom interpretation, in patients with somatization disorder. Methods : Thirty patients meeting the criteria of DSM-IV somatization disorder were compared with thirty controls. We evaluated the subjects using Symptom Checklist-90-Revised (SCL-90-R), Somato-Sensory Amplification Scale (SSAS), Symptom Interpretation Questionnaire (SIQ), and The Ways of Stress Coping Questionnaire (SCQ). Independent t-test and Pearson correlation analysis were used. Results : From the results of SCL-90-R subscales, the scores of somatization, obsession-compulsion, depression, anxiety, and psychoticism were significantly higher in patients with somatization disorder than nonnal controls. Somatization disorder patients had greater amplification of physical sensation in SSAS and significantly higher score in physical interpretation of SIQ compared with psychological or environmental interpretation, In the SCQ of somatization disorder patients, we observed generallylower levels of total coping scores than the control group and significant positive correlation between passive coping style of SCQ and psychological interpretation of SIQ. Conclusion : These results show that patients with somatization disorder have various psychopathology, greater amplification of physical sensation, physical interpretation tendency of symptoms, and insufficient copying strategy.
Anthony Browne 그림책의 상호 텍스트성에 관한 연구
지은주,이혜은 부산유아교육학회 2003 유아교육논총 Vol.12 No.-
현대의 그림책에서는 여러 다양한 기법들이 사용되는데, 상호텍스트성도 이 중의 하나이다. 본 연구에서는 상호텍스트성을 문학적 또는 문학외적인 텍스트와 이미지의 변형 및 재구조화로 정의 내리고, Anthony Browne의 그림책을 이러한 상호텍스트적인 관점에서 분석하였다. 분석결과는 다음과 같다. 첫째, Anthony Browne의 그림책 속에는 전래동화와 신화가 숨어 있으며, 둘째, Anthony Browne의 그림책은 문학외적인 장르 즉 유명한 회화 작품들과 영화 장면들과도 상호텍스트성을 보이며, 넷째, Anthony Browne의 그림책들 간에도 인물, 배경, 스타일면에서 많은 상호텍스트성을 보인다. 이러한 상호텍스트성은 그림책을 훨씬 더 다양하고, 복합적이고, 재미있게하며, 아동으로 하여금 문학을 더욱더 확장하고 심화하게끔 한다. A variety of techniques are used in modern picturebooks, and one of these is intertextuality. We defined intertextuality as literary or extraliterary variation and restructure of text and image. We analysed Anthony Browne’s picturebooks in terms of intertextuality. Our results are followings: First, fairy tale and myth are linked with intertextuality in his books. Secondly, intrtextuality appears with extraliterary, well-known pictures and film-scenes. In the third, intertextuality appears on characters, settings, and style. Intertextuality makes children read picturebooks with very various, complex, and interesting mind, Then, intertextuality also helps children extend and deepen their understanding and imagination of the literature.
공황장애에서 Paroxetine 단기약물치료가 심리적 상태에 미치는 영향
이소영,김지혜,김율리,강은호,이동수,유범희 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.3
Objectives : This study was designed to evaluate clinical effect of paroxetine treatment and to explore psychological Pre-dictors of treatment response. Methods : Patients (n=26) who met DSM-IV criteria for panic disorder with or without agoraphobia were treated by Pa-roxetine for 12 weeks. We assessed symptom improvement using Clinical Global Impression (CGI), and clinical characteristics using Anxiety Sen&itivity Index (ASI), Anxious Thoughts and Tendencies (AT & T), Agoraphobic Cognition Questionnaire (ACQ), Body Sensation Questionnaire (BSQ), Beck Anxiety Inventory (BAI), and Beck Depression Inventory (BDI). T-test, correlation analysis, and stepwise multiple regression analysis were performed. Results : Panic patients showed significant improvement in seventy of illness and each clinical characteristic after 12 weeks of paroxetine treatment. There were significant correlations among severity of illness, anxiety, and depression, and subjective seventy was related with catastrophic thoughts. The more catastrophic thoughts and the higher sensitivity of body sensation, Patients had the worse symptom improvement they shorved. Multiple regression analysis showed that catastrophic thought related to agoraphobia was the best predictor of symptom improvement (22%). Conclusion : This study suggests that short-term treatment of paroxetine is effective in panic disorder with or without ago-raphobia, and that catastrophic thought could be a predictor of poor treatment response. Thus cognitive intervention on Catastro-phic thoughts may play an important role in symptom improvement in panic disorder.