분자역학적 방법을 이용한 부산시내 대형건물 냉각탑수의 레지오넬라균의 형별 분류

김정만,정석훈,서대영,박은희,송은주,최재철,이은엽,장철훈 대한임상미샐물학회 2004 Annals of clinical microbiology Vol.7 No.1

(±)-Camphor가 ICR 마우스 수컷의 간 cytochrome P450 효소 활성에 미치는 영향

오은경,박형건,배기현,최옥진,최은경,최창근,한진희,정태천 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.4

Effects of (±)-camphor on liver cytochrome P450 enzymes were investigated in male ICR mice. Mice were treated intraperitoneally with 0, 200, 400 and 800 mg/kg of (±) -camphor in corn oil for 3 consecutive days. Twenty four hr after the final treatment, the animals were subjected to necropsy. The activities of serum aspartate aminotransferase and serum alanine aminotransferase were slightly changed by the treatment with (±)-camphor at the doses used. Administration o(±)-camphor to mice significantly induced the hepatic activities of pentoxyresorufin O-depentylase and benzyloxyresorufin O-debenzylase and weakly induced ethoxyresorufin O-deethylase in dose-dependent manners. The present results suggested that (±)-camphor might act as a relatively specific inducer of hepatic cytochrome P450 213 in male ICR mice.

억제대 적용지침 개발을 통한 불필요한 억제대 적용율 감소활동

곽경선,김성은,배은경,이은숙,이은혜,최윤정,이윤경 한국의료QA학회 2009 한국의료질향상학회지 Vol.15 No.2

문제: 억제대 적용에 대한구체적 적용지침 없이 의례적으로 억제대를사용함으로 인해 환자들의 신체적 또는 정신적 안전을 위협할 수 있다. 목적: 완전 진정상태 이거나 근력이 약하여 발관능력이 없는 환자에 대한 예방적 적용, 바빠서 환자를볼수 없 는경우, 간호사본인의 판단이 없이 타인의 요구에 따르는등의 불필요한 억제대 적용이 증가하는 원인을 파악하여 중환자실의 특수성에 맞는 억제대 적용및 제거 지침을 마련하고자 한다. 의료기관: 인천광역시에 소재한 의과대학 소속병원의 집중치료실 개선효과: 억제대 적용에 대한중환자실 간호사에게 미치는 영향을 보면 태도 정도 p=0.09(p<0.1), 올바른 수행 능력은 p= 0.005 (p <0.0히로통계적으로유의한것으로 나타났다. 지식 정도 p=0.172(p<0.05) 통계적으로 유의 하지는 않지만 모든항목이 개선 활동전 에 비해 2,3차 개선 활동후에 향상한 것으로 나타났다. 개선활동전에 8.1%였던 간호 기록, 0.7%였던 간호중재, 0%였던 의사처방율이 3차 개선 활동 후 3가지 모두 100% 달성되었다. 이는 억제대 적용율 갑소 및 부적절한 억제대 적용율은 유의하게 감소하였다. 교훈: 중환자실 간호사의 억제대 적용에 대한태도, 지식, 올바른 간호 수행 능력은 지속적으로 재평가 되어지고, 교육내용은좀더 나은 간호제공을 위하여 개발 되어져야 할 것이다. 억제대 적용 기준과 제거 기준을 Check List 하여 객관성의 유지를 위한 개선 활동은계속적으로 Feedback 되어야 할 것이다.

Effect of 2-Deoxy-D-Glucose on Metabolic Status, Proliferative Capacity and Growth Rate of FSall Tumor

Hyesook Chang(장혜숙) , Eun Kyung Choi최은경) , Jeong Gill Cho(조정길) , Tae-Hwan Lim(임태환) , Tae-Keun Lee(이대근) ,Yun Yi(이윤) ,Young Joo Cho(조영주) , Gon Sup Kim(김곤섭) 대한방사선종양학회 1991 Radiation Oncology Journal Vol.9 No.1

2-DDG가 쥐의 섬유육종(FSall)에 미치는 영향에 대한 연구로 에너지 신진대사는 체내에서의 ³¹P - 자기공명 분광기를 이용하여 관찰하였고 세포 증식 능력은 유세포 분석기를 사용하여 연구하였다. 성장속도는 개의 세포를 C₃Hj/Sed 쥐의 발등에 이식한 후 3차원적으로 측정하여 관찰하였다. 2-DDG를 투여한 경우에는 이식후 12일에 복강내로 주사하였다. 이식후 12일의 종양의 평균 크기는 250㎣이었다. FSall 종양의 성장속도는 semilog graph의 기울기와 종양의 doubling time으로 측정하였다. 2-DDG를 투여한 후 성장속도가 감속되었다. 5~12일 사이의 성장속도의 기울기가 0.828, 종양의 Idubling time이 0.84일이고 대조군에서는 13~28일 사이의 기울기가 0.218, doubling time이 3.2일인 반면 2-DDG 투여군에서는 성장속도의 기울기가 0.135이고 doubling time이 5.1일이었다. ³¹P-자기공명 분광기를 이용하여 2-DDG의 영향을 분석해 본 결과 2-DDG 투여후 종양증식 속도의 감속과 더불어 phosphomonester (PME)와 inorganic phosphate (Pi)의 증가속도가 감소하였다. 이것은 2-DDG 투여후 세포의 괴사가 감소하였다는 의미가 있다. 유세포 분석기를 이용하여 종양의 증식 능력을 분석한 결과는 2-DDG 투여후 S-phase와 G₂+M phase의 DNA 분포가 크게 증가하였다. 이것은 2-DDG 투여후 세포가 좀더 방사선에 민감한 cycle로 진행함을 의미하는 것으로 해석할 수 있다. 이에 저자들은 2-DDG가 FSall 종양세포에 미치는 흥미있는 결과를 토대로 방사선 치료에 미치는 영향과 실제 이용 가능성에 대하여 더 연구하고자 한다. The effect of 2-deoxy-d-glucose (2-DDG) on C₃H mouse fibrosarcoma(FSall) was studied, Metabolic status, especially for energy metabolism, was studied using in vivo P-MRS, prolifer-ative capacity was observed on flow cytometry(FC) and growth rate was measured after trans-plantation of viable tumor cells in the dorsum of foot of C₃Hf/Sed mice. One gram of 2-DDG per kg of body weight was injected intraperitoneally on 12th day of implantation. Average tumor size on 12th day of implantion was 250㎣. Growth rate of FSall tumor was measured by tumor doubling time and slope on semilog plot. After 2-DDG injection, growth rate slowed down. Tumor doubling time between tumor age 5-12 days was 3.2 days with slope 0.218 in control group. After 2-DDG injection, tumor doubling time was elongated to 5.1 days with slope 0.136. The effect of 2-DDG studied in vivo P-MRS suggested that the increase of phosphomonoes-ter (PME) and inorganic phosphate (Pi) by increasing size of tumor, slowed down after 2-DDG injection. Flow cytometry showed significantly increased S-phase and G₂ + M phase fraction suggesting increased proliferative capacity of tumor cells in the presence of 2-DDG. Authors observed an interesting effect of 2-DDG on FSall tumor and attempt to utilize as an adjunct for radiotherapy.

다발성 간종괴의 형태로 나타난 특발성 과호산구 증후군 치험1예

최승오,연규민,이승민,김순제,왕준호,박형석,이재동,진춘조,이창훈,신현준,김정은 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-

Hypereosinophilic syndrome is characterized by persistent blood eosinophilia of 1,500/ul or more in the absence of known causes and multiorgan dysfunction by eosinophil-related tissue damage. In Korea, some cases of hypereosinophilic syndrome with hepatic involvement have been described with prolonged benign clinical courses. Most of them were diffuse or multifocal lesions in imaging studies, and a few case presenting as a single mass has been described. Here we report a case of hypereosinophilic syndrome with hepatic involvement in a 65-year-old man who presented with multifocal mass lesions. By abdominal US and CT scan, multiple, ill-defined nodules were detected in throughout the liver. Liver biopsy revealed severe eosinophilic hepatitis, suggestive of hypereosinophilic syndrome. Hepatic mass lesions improved after steroid administration for several weeks.

정맥내 주사로 인한 정맥염 발생의 다기관 공동 역학 조사 : 서울, 경기도 6개 종합병원을 대상으로:Focused on 6 hospitals in Seoul or Gyonggi-do, Korea

최정실,박은숙,진혜영,정선영,박미라,김정은,김금순 대한병원감염관리학회 2003 의료관련감염관리 Vol.8 No.2

SAR 영상시스템에서의 In-scene Target의 Spatial Doppler 특성을 이용한 위상오차 제거 기법

최정희,김은정 대구대학교 정보통신연구소 2003 情報通信硏究 Vol.2 No.1

SAR 영상시스템에서 목표물의 정보를 성공적으로 추출해내기 위해서는 반사된 신호를 수신할 때, Coherent detection이 필수적이다 수신시 Incoherent detection은 복소 위상오차 형태로 나타나므로 실제 목표물의 영상에 심각한 Degradation을 야기시켜 치명적인 결과를 초래하게 된다. 본 논문에서는 Incoherent detection을 야기시키는 가장 큰 원인인 Echo 데이터 측정시의 레이다와 목표물의 상대적 거리오차를 보정하기 위해 In-scene target을 이용한 위상오차 제거 기법을 제시한다. 제시된 위상오차 제거 기법은 수신된 신호를 파동 방정식으로부터 모델링하고, 각 주파수대의 전체 수신신호의 조합으로 위상오차 값을 유도한다. 또한 제시된 알고리즘은 보다 정확한 교정을 위해 반복적으로 추정된 위상오차로부터 수신신호의 오차를 제거한다. 여기서, 수신신호 측정시 위상오차를 보상하기 위해 표적 영역의 강한 In-scene target에 대한 Spatial Doppler 특성을 이용한다. 따라서 수신된 신호 중 일부만을 사용함으로써, Computation 부담과 반복 횟수를 줄일 수 있다. 본 논문에서는 컴퓨터 모의실험을 통해 발생시킨 위상오차를 포함한 수신신호에 제안된 알고리즘을 적용시켜 알고리즘의 성능을 영상으로 확인한다. The success of the target reconstruction in SAR imaging system is greatly dependent on the coherent detection Incoherent detection appears as multiplicative phase error to echoed signal, which consequently, causes fatal degradations such as fading or dislocation of target image In the paper, we proposed the phase error correction scheme using an in-scene target to compensate relative distance error between radar and target We started with modeling from wave equation for one point target and extended to overall echoed data from the target scene The proposed algonthm is also good for the correction of relatively large phase error because it can be applied repeatedly We used the spatial Doppler charactenstics of the strong in-scene target to retneve phase error in echo signal measurement We only used the partial spectral echo data to reduce computation loads and the number of iteration We venfied the performance of the proposed algonthm b) applying it to the simulated spotlght-mode SAR data

알케인류 상변화물질의 열적 특성 해석

崔恩洙,鄭東柱 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - The objective of the present study is to reveal thermal characteristics of various alkane phase-change-material which have high latent heat during phase change from solid to liquid. In order to analysis thermal characteristics of various phase-change-material, phase-change temperature and energy of various phase-change-material were measured by using differential scanning calorimeter. The phase-change-material slurries which are used in this study were paraffin particle, microcapsulated octadecane and microcapsulated lauric acid. The heating rate of differential scanning calorimeter and the size of phase-change-material were changed during phase-change temperature and energy measurement.

햄스터 구강암 발생 과정에서 Heat Shock Protein에 관한 면역조직화학적 연구

최규환,이동근,김은철,정창주 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2

A IMMUNOHISTOCHEMICAL STUDY ON HEAT SHOCK PROTEIN IN ORAL CARCINOGENESIS IN HAMSTER Heat shock protein (HSP) expression is unto·emulated in tumor cells and, HSP expression is likely marker of the malignant potential of oral epithelial lesion. Furthermore, the 70kDa HSP is implicated in the degree of tumor differentiation, the rate of tumor proliferation and the magnitude of the anti-tumor Immune response. Accordingly, the distribution and intensity of HSP70 and HSP47 expression was assessed in the DMBA induced oral carcinogenesis in hamster. Golden Syrian hamsters which were 3 months-age and 90∼120g were collected. 9,10-dimethyl -1,2-ben-zanthracene (DMBA) in a 0.5% solution in mineral oil was painted on the buccal pouch mucosa 3 times per week in the study group. In each control and experimental groups of 6, 8, 10, 12, 14, 16, 18, 20 weeks, specined for immunohistochemical study with anti-HSP47 and anti-HSP70 antibody. The following results were obtained. 1.HSP47 positive cells were race or negative of normal oral mucosa, increased mildly in basal and suprabasal basal layer, and spinous cell layer after experimental 6 weeks (dysplastic or CIS stage). In CIS stage, HSP47 expression is prominent in dysplastic free or normal adjacent epithelium. 2.HSP47 positive cells in connective tissue were mainly inflammatory cells, which is gradually increased from control to precancerous and cancer stage. But HSP47 positive cells after 14 weeks were decreased, especially normal and cancer adjacent epithelium. 3.The positive staining cells of HSP70 in control, dysplastic, and CIS stage were not seen. But they were mild findings in basal layer and moderate findings in spinous layer after experimental 14 weeks (cancer stage). 4.HSP70 positive cells were increased in precancerous and cancer stage than control group in connective tissue. After experimental 16 weeks, we could not find the HSP expression in cancer cells according to cancer differentiation or cancer stage. It is concluded that HSP70 or HSP47 expression is not a definitive marker of oral malignancy or malignant potential. However, with further development, HSP immunoreactivity may be valuable as an adjunct to conventional histology for assessing the malignant potential of oral mucosal lesions.

한번의 간질발작 후 혈청 Neuron-Specific Enolase 농도 변화

최승호,박영춘,이장준,임정근,김지언,이상도 啓明大學校 醫科大學 1999 계명의대학술지 Vol.18 No.4

An increase in neuron-specific enolase (NSE) levels in serum and CSF has been shown to be an useful marker of brain damage after stroke, global ischemia, and coma. We report the changes of serum NSE levels after seizure attacks in epileptic patients compared with the levels in normal controls and epileptic patients without seizure attack at least 7 days (epileptic controls). Twenty-four seizures were included in this study. Blood was drawn within 1 hour, at 12 hour, 24 hour, and 48 hour after seizure attack. Serum NSE levels were measured with radioimmunoassay. The mean NSE levels for normal controls and epileptic controls were 6.94 ng/ml and 7.46 ng/ml, respectively. There were significant increase in level of serum NSE measured within 1 hour after seizure attack in epileptics compared with the level in normal controls (15.10ng/ml versus 6.94ng/ml, p<0.05) and epileptic controls (15.10ng/ml versus 7.46ng/ml, p<0.05). Serum NSE measured at 12 hours after seizure also increased compared with normal controls (12.32ng/ml versus 6.94ng/ml, p<0.05) and epileptic controls (12.43ng/ml versus 7.46ng/ml, p<0.05). Between normal controls and epileptic controls, there were no significant difference in serum NSE levels. We conclude that serum NSE level was elevated in epileptic patients who had seizure attack within 12 hours. Serum NSE levels can be useful marker for seizure within 12 hours after onser. The elevated serum NSE level after single seizure attack may suggest that the brain was injured in single seizure.