서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

Quality of care in inflammatory bowel disease in Asia: the results of a multinational web-based survey in the 2nd Asian Organization of Crohn`s and Colitis (AOCC) meeting in Seoul

( Hye Kyung Song ),( Kang-moon Lee ),( Sung-ae Jung ),( Sung Noh Hong ),( Dong Soo Han ),( Suk-kyun Yang ) 대한장연구학회 2016 Intestinal Research Vol.14 No.3

Background/Aims: The quality of care in inflammatory bowel disease (IBD) has not been systematically estimated. The aim of this study was to investigate the current status of quality of IBD care in Asian countries. Methods: A questionnaire-based survey was conducted between March 2014 and May 2014. The questionnaire was adopted from “An adult inflammatory bowel disease physician performance measure set” developed by the American Gastroenterological Association. If the respondent executed the performance measure in more than 70% of patients, the measure was regarded as well performed. Results: A total of 353 medical doctors from Asia completed the survey (116 from Korea, 114 from China, 88 from Japan, 17 from Taiwan, 8 from Hong-Kong, 4 from India, 3 from Singapore, and 1 each from the Philippines, Malaysia and Indonesia). The delivery of performance measures, however, varied among countries. The documentation of IBD and tuberculosis screening before anti-tumor necrosis factor therapy were consistently performed well, while pneumococcal immunization and prophylaxis of venous thromboembolisms in hospitalized patients were performed less frequently in all countries. Physician awareness was positively associated with the delivery of performance measures. Variations were also noted in reasons for non-performance or low performance of quality measures, and the two primary reasons cited were consideration of the measure to be unimportant and lack of time. Conclusions: The delivery of performance measures varies among physicians in Asian countries, and reflects variations in the quality of care among the countries. This variation should be recognized to improve the quality of care in Asian countries.

배추 시스테인 단백질 분해 효소 억제 유전자 BCPI-1의 발현과 종자 발아 및 유묘 생장과의 연관성

홍준기,이은영,김정률,양경애,최영주,정우식,김호일,윤대진,이상열,조무제,임체오 Plant molecular biology and biotechnology research 2003 Plant molecular biology and biotechnology research Vol.2003 No.-

Phytocystatins are protein inhibitors of cysteine proteinases of the papain family that have been identified in both monocot and dicot plants. A cDNA encoding a phytocystatin, BCPI-1 (Brassica Cysteine Proteinase Inhibitor-1) has been isolated from Chinese cabbage (Brassica campestris L. ssp. pekinensis) flower buds. Here, we tested whether BCPI-1 transcription is regulated by hormones, and could be involved in regulating cysteine proteinases during and after germination. BCPI-1 was sensitive to exogenous GA_(3) and ABA, which are important factors controlling seed germination, suggesting that the expression of BCPI-1 is hormonally regulated. We introduced a recombinant plasmid containing the full-length BCPI-1 cDNA under the control of cauliflower mosaic virus 35S promoter into rice embryogenic calli using the particle delivery method, and regenerated a number of transgenic rice plants. Constitutively over-expressed BCPI-1 caused changes in overall plant growth and development, including reduced germination and seedling growth. These data support the role of the BCPI-1 in the regulation of endogenous proteinases during both seed germination and subsequent seedling development. Phylocystatins은 papain계열의 cysteine 단백질 분해 효소 활성을 특이적으로 억제하는 억제자로 다양한 식물 종으로부터 분리되었다. 본고에서는, 배추 화아 cDNA library로부터 분리된 phytocystatin인 BCPI-1(Brassica Cysteine Proteinase Inhibitor-1)의 생체 내 기능에 대해 연구하였다. 먼저, BCPI-1 전사체는 발아 조절에 중요한 영향을 미치는 GA₃와 ABA에 의해 예민하게 증가, 혹은 감소되는 반응을 보임으로써, BCPI-1이 식물 호르몬의 영향을 받으며, 특히 발아나 유묘의 생장 조절에 관련이 있음을 알 수 있었다. Particle bombardment 방법을 통하여 BCPI-1을 벼의 배 형성 세포 내에 도입, 재분화 시켜 형질 전환 벼를 생성하였다. CaMV 35S promoter의 조절에 의해 지속적인 BCPI-1 발현을 보이는 형질 전환 벼의 경우, 발아와 유묘 생장이 현저히 지연되었다. 위의 결과들을 바탕으로, BCPI-1이 식물체 내에서 생성되는 cysteine 계열의 단밸질 분해 효소 활성을 조절하여 종자의 발아와 유묘의 생장에 영향을 미치는 것으로 추측한다.

치환 페나실 벤젠 슬포네이트와 N, N-디메틸 아닐린 사이의 속도론적 연구

홍성완,한광래,이준경 又石大學校 1990 論文集 Vol.12 No.-

Kinetic studies of nucleophilic substitution reactions of phenacyl. benzeneslfonates(PBS) with N, N-dimethyl anilines(DMA) were conducted by conductometric method. Hammett and Broensted values were determined, in order to examine the transition state variations caused by changes in nucleophiles, substituents and indicated a relatively advanced bond-formation in the transition state. Application of potential energy surface(PES) and quantum mechanical(QM) models of transition state characterization lead us to conclude that the reaction proceeds via associative S_N2 mechanism. It was found that reactivity-selectivity principle(RSP) and Bell-Evans principle(BEP) held within the DMA series and hence constituted a good example of a thermodynamically controlled reaction series but are violated between two different reaction series with DMA and aniline.

운동선수의 임장불안에 대한 연구

홍관이,이광재,김두경,부기원,노성규,한상준,박기동,오수일,문병용,이철규,박장평,엄기진,박남환 江原大學校附設 體育科學硏究所 1984 江原大學校附設體育科學硏究所論文集 Vol.- No.9

This study is designed to grasp the elements and situations of stage fright in order to propose a part of ways to cope with it. We make 511 top-class high school players, male and female, in the central districts (Seoul, Inchon, Kyungki, Chungbuk, and Kangweon Province) on object of questionnaire, and get the following results. Through players generally have all-round characters they show weakness in the superiority and emotional stability while showing strength in the sonformity. This fact comes to be related to the elements which cause stage fright. Physiological changes also have many effects on the symptom of stage fright. Especially, stage fright increases when players show sensitive reaction to the self-consciousness of final consequence which comes from the tension or uneasiness of sympathetic nerve, Thus, it turns out that players make use of reducing psychological burden by physical exercise or adjusting the level of demanded result in order to release the stage fright.

산소 혼합비에 따른 Ba_(0.7)Sr_(0.3)TiO₃박막의 유전체 특성

홍석민,임성민,김호건,김옥경 한양대학교 이학기술연구소 1999 이학기술연구지 Vol.1 No.-

Ba과 Sr의 화학당량비를 조절하여 Ba_(0.7)Sr_(0.3)TiO₃분말 시료를 제조하여 각각 1,200℃와 1,300℃에서 calcining과 sintering을 실시한 후 3 inch 성형틀로 Ba_(0.7)Sr_(0.3)TiO₃인 sputtering target를 제작하였다. MIM구조의 capacitor를 위하여 하부전극을 Pt(1500Å)/TiN(2000Å)/SiO₂/Si로 하고, 제작한 target를 이용하여 RF sputtering방법으로 BST박막을 증착하였다. 제작한 박막의 결정구조를 X-선 회절계(XRD)로 분석한 후 Al을 상부전극으로 증착하여 축전기구조로 C-V와 I-V의 전기적 특성을 얻었다. 제작된 박막의 결정구조를 XRD 측정으로 확인한 결과 550℃ 이상의 기판온도에서 결정성장이 양호함을 보였다. 유전상수와 유전손실이 기판온도와 sputtering 가스의 산소 혼합비에 영향을 받는 것으로 확인되고 I-V를 통한 전기적 특성에서 전도기구가 Schottky 장벽에 의한 것과 높은 인가전압에서 space charge limited (SCL) 전도 특성을 보였고, 누설전류의 값은 표면구조의 영향으로 산소가스의 증가에 따라 감소하였다. Ba_(0.7)Sr_(0.3)TiO₃powders were prepared by changing stoichiometry of Pb and Ba. After they were calcined and sintered at 1200℃ and 1300℃ respectively, BST sputtering targets were made in 3 inch mould. For MIM structure capacitors, Pt(1500Å)/TiN(2000Å)/SiO₂/Si were used for bottom electrodes and the BST thin films were sputtered on bottom electrodes. After we analysed their structures by XRD, Al was evaporated on the BST films for MIM capacitor and we investiaged the electrical properties by measuring of C-V and I-V. We found that the structures of the films showed good crystalllinity above 550℃ from the results of XRD measurements. We supposed that the dielectric constant and dielectric loss of films were affected with substrate temperature and oxygen ratio of sputtering gas. In I-V behavior, we supposed that the conduction mechanism was Schottky conduction and space charge limited(SCL) conduction in high voltage range.

항암제 AG60이 흰생쥐 위점막 상피세포의 DNA합성에 미치는 영향 : 자기방사법적연구

박경호,안의태,고정식,하상선,한영복,정영신,홍은경,유보림,김상건,이경영,강종구 대한해부학회 1999 Anatomy & Cell Biology Vol.32 No.1

간질발작후 MRI 영상에서 뇌 종창을 보인 3예 보고

홍현숙,김대호,이혜경,박재성,박성진,조준희,차장규,백상현 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

We report seizure induced brain swelling in three patients. MRI revealed a cortical, subcortical(3/3), and basal ganglia(2/3) high signal intensity on T2- weighted and FLAIR images. The lesion shows low signal on T1-weighted image, and enhanced after contrast administration. Follow up study after 27 days in one case revealed complete resolution of the lesion. The reversible MRI findings may be the results of a local brain swelling, breakdown of blood-brain permeability, and a defect of cerebral autoregulation during seizure activity. The transient nature of such findings have to be considered in the differential diagnosis such as reversible ischemia, migraine, inflammation and infection.

Cone-beam CT를 이용한 제II급 부정교합 아동의 상기도 형태에 관한 3차원적 연구

홍지숙,김대성,오경민,김윤지,이규홍,박양호 대한치과교정학회 2010 대한치과교정학회지 Vol.40 No.3

Objective: The aim of this study was to evaluate the volumes and areas of the upper airways in children with Class II malocclusion, using three dimensional cone-beam computed tomography (CBCT) and to compare the volumetric and cross-sectional measurements and cephalometric variables to investigate possible relationships between the upper airway and facial morphology. Methods: CBCT scans were obtained from 37 subjects (17 boys and 20 girls; average age, 11.02 years). The upper airway volumes and areas were measured, and compared with cephalometric variables. Results: The area of the PNS-posterior plane (SPP) was significantly smaller in the Class II malocclusion group (p < 0.05). Also, the volumetric and cross-sectional measurements were lower in Class II than in Class I malocclusion groups, although the differences were not significant between the two groups (p > 0.05). The Class II malocclusion group showed significantly smaller values of PFH, mandibular body length, pog to N perp and showed larger values of FMA, ANB, and facial convexity than the Class I malocclusion group. The volume of the upper airway in front of PNS point (WN) showed negative correlation with ANB (p < 0.05). Conclusions: The Class II malocclusion group had a narrower upper airway associated with a decreased posterior facial height and a divergent growth pattern than the Class I malocclusion group. 성장기 아동의 상기도 협착은 두개안면 성장에 영향을 미칠 수 있다. 본 연구는 3차원 cone-beam computed tomography (CBCT)를 이용하여 제II급 부정교합 아동의 상기도 부피 및 단면적 계측치와 측모두부계측치를 비교하여 상기도와 안면 형태와의 연관성을 알아보고자 하였다. 37명의 아동(남자 17명, 여자 20명, 평균 연령 11.02세)의 CBCT를 촬영하였다. 연구 결과, 상기도의 PNS-posterior plane에서의 단면적(S_(PP))은 제II급 부정교합군에서 유의하게 작았다 (p < 0.05). 상기도 부피 계측치는 제II급 부정교합군에서 제I급 부정교합군보다 작았으나, 두 군 간 통계적으로 유의한 차이는 없었다. 제II급 부정교합군은 후안모고경(PFH), mandibular body length (p < 0.05), Pog to N perp (p < 0.01)에서 제I급 부정교합군보다 유의하게 작은 값을 보였고, FMA (p < 0.05), ANB, facial convexity (p < 0.01)는 유의하게 큰 값을 보였다. 제II급 부정교합군의 PNS 전방의 상기도 부피(W_(N))는 ANB difference 각도와 음의 상관관계를 보였다 (p < 0.05). 제II급 부정교합 아동은 상대적으로 좁은 상기도 부피를 가지며 이에 따른 감소된 후안모고경(PFH)과 하악골의 divergent한 안면 성장 양상을 보였다.

2-O-α-D-Glucopyranosyl L-Ascorbic acid 생산을 위한 Cyclodextrin glucanotransferase의 고정화

성경혜,김성구,장경립,전홍기 부산대학교 김치연구소 2003 김치의 과학과 기술 Vol.9 No.-

AA를 AA-2G로 전환하는 CGTase를 고정화하여 AA-2G 대량 생산의 가능성을 고찰한 결과, CNBr-sepharose 4B가 가장 효과적인 담체로 판명되었고, CGTase의 고정화 최적 조건과 고정화 CGTase에 의한 AA-2G 생산의 최적조건 및 재사용성을 검토하였다. 최적 고정화 조건은 효소량 24,000 units/g resin으로 9시간 반응하여 약 18,000 units/g resin의 최고 고정화율을 얻을 수 있으며, pH 5.0(50 mM sodium citrate buffer)용액에 12% AA-Na와 8% soluble starch를 기질로 하여 800 units/ml의 고정화 CGTase를 첨가한 후 37℃에서 100 rpm으로 교반하면서 25시간 반응하여 약 18 mM의 AA-2G 최고량을 얻을 수 있었다. 또한 0.015 mM의 CaCl₂를 첨가하여 고정화 CGTase의 재사용성을 관찰한 결과, 5회까지 50% 이상의 AA-2G 생산율로서 그 가능성을 입증할 수 있었다. 그리고 효소의 재사용성이란 측면에서, 본 고정화의 다른 한 방법인 ultrafiltration(한외 여과)에 의해서는 Millipore사의 YM10 membrane을 이용하여 먼저 단백질량과 효소 활성 변화를 측정하여 그 가능성을 확보할 수 있었으며, 기질 20 ml을 사용하여 AA-2G를 생성시킨 후, 한외여과에 의해 효소만을 회수하여 연속 반응해 본 결과 8회까지 50% 의 생성률을 유지하였다. 따라서 한외 여과는 CNBr-sepharose 4B와 함께 효율적인 고정화의 한 방법으로 판명되었으며, 앞으로 이들 고정화 효소를 이용한 연속 반응 시스템의 구축이 뒤따라야 할 것이다. Cyclodextrin glucanotransferase (CGTase) from Paenibacillus sp. JB-13 was immobilized on various carriers by several immobilization methods such as ionic binding, covalent linkage and ultrafiltration to improve the process performance. The ultrafiltration and covalent linkage with CNBr-activated sepharose 4B were found as the best method for immobilization of CGTase. The ability of was as follows: contact time 6 hrs at 37℃, pH6.0, 100rpm and enzyme loading 24,000 units/g resin. The optimum conditions for production of 2-O-α-D-Glucopyranosyl L-Ascorbic acid by immobilized CGTase turned out to be: pH 5.0, temperature 37℃. 20% substrate solution containing 8%(w/v) of soluble starch and 12%(w/v) of L-ascorbic acid sodium salt, 100 rpm, for 25 hrs and with 800 units of immobilized CGTase/ml substrate solution. More over the CGTase activity could be stably maintained for 8 times of repetitive reactions after removing products by ultrafiltration through YM 10 membrane.