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      • SCOPUSKCI등재

        Polyozellus multiplex가 생산하는 지질과산화 저해물질

        황지숙,송경식,김양섭,석순자,이태호,유익동 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.5

        담자균류로부터 지질과산화 저해물질을 탐색하던 중 강원도 오대산 지역에 자생하는 버섯의 한 종류로 부터, Sparague-Dawley계 rat의 간 mirosome 분획의 지질과산화를 강하게 억제하는 물질이 있음을 발견하였다. 이 버섯의 미생물학적 특성을 관찰한 결과 민주름버섯목, 굴뚝버섯과에 속하는 까치버섯(Polyzellus multiplex)으로 동정하였으며 본 버섯의 자실체 methanol 추출물을 benzene, ethylacetate로 순차적으로 추출하고 각종 chromatography를 이용하여 활성물질을 정제한 결과, ethylacetate층으로 부터 황산화활성을 나타내는 PM1을 benzene층으로 부터 지방산 계열의 PM2와 PM3 화합물을 순수하게 분리 정제하였다. PM1은 정색반응 및 각종 기기분석 결과 thelephoric acid계의 화합물로 동정되었으며 PM2 및 PM3는 각각 linoleic acid와 oleic acid로 동정되었다. 지질과산화 활성물질로 분리정제한 PM1 화합물의 IC_50 값은 1.96 ppm이었으며 LD_50 값은 500 mg/Kg 이상이었다. In the course of screening lipid peroxidation inhibitor from basidiomycetes, a mushroom, which was collected at O-Dae mountain in Kangweon-Do, was found to have active compound. The mushroom was identified as Polyzellus multiplex, which belongs to Aphylloporalles Thelephoraceae, on the basis of macroscopic and microscopic characteristics of the fruiting body. The methanol extract of fruiting body was extracted with benzene and ethylacetate, sequentially. By using various kinds of chromatographies, PM1, and PM2 and PM3, were purified from the ethylacetate extract and the benzene extract, respectively. Color reaction and analyses of IR, UV, and NMR spectra indicated that PM1 was a derivative of thelephoric acid, and PM2 and PM3 were linoleic acid and oleic acid, respectively. IC_50 of PM1 for inhibition of lipid peroxidation was 1.96 ppm and LD_50 was 500 mg/kg.

      • KCI등재

        골반골절 환자에서 출혈의 정도를 반영하는 분류

        황태식,손대곤,김인병,장석준 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

        The causes of death of pelvic bone fracture are hemorrhage, associated internal organ injuries, sepsis, and multi-organ failure, among which hemorrhage still remains as the leading cause of death. While previous classification for pelvic bone fracture was focused on orthopedic treatment, Pennel & Sutherland suggested a new classification according to the pelvis AP film took in the emergency room. Since this classification supposedly evaluates hemorrhage from pelvic bone fracture, we are reporting on the efficiency of this classification. Out of all the 150 patients admitted to Yong Dong Severance Hospital Emergency Room from 1992, Jan. through 1994, Dec. due to pelvic bone fracture, 18 people with incomplete medical record and X-ray film excluded from the study. The study was done Cohort method and t-test was used. According to the new classification, the unstable fracture had a much more bleeding amount regardless of the type, and type I stable fracture bled more than all the other stable fracture. These were statistically meaningful. Also, there was no differences in the type of fracture when ISS(Injury Severity Scale), GCS(Glasgow Coma Scale), and associated injury were compared. In conclusion, previous classification was done according to orthopedic treatment and this classification could be done only after pelvis X-ray series and pelvic bone CT was performed. Therefore much more time is consumed, more stress is put upon the patient and no comparisons can be made in performing emergency care. On the other hand, modified Pennel &-Sutherl`s classification can be simply classified in the emergency room by taking pelvis AP film only and the bleeding amount can be measured according to the type. Therefore, this classification can be helpful in performing emergency care.

      • 폐목질을 사용한 시멘트보드의 물성에 관한 실험적 연구

        황병준,정광식,강태경,김광기,임서형,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

        Recently, as the alternatives to preserve environment such as effective usage of wastes or unusable resources are drawing attentions, researches and measures for the two tasks, which are reuse of waste wood and development of eco~friendly materials, are being examined and established in various fields. However, they are still insufficient. Therefore, in this study, for the efficient application of waste woods and eco~friendly effects, mortar was produced using sawdust as the waste wood and mineral material cement for combination, in order to produce inorganic boards using waste woods, which were made when sawing. The present study purposed to analyze the physical and dynamic characteristics of woody cement boards, which were made by modifying water~cement ratio for each wood inclusion rate based on a hardening~accelerator inclusion rate set in previous studies and, based on the findings, to provide basic data about the physical properties of inorganic boards made of waste wood, in order to produce woody cement boards using waste wood, which has problems in being used in the manufacturing of woody cement boards.

      • KCI등재

        응급환자에서의 쇼크계수의 의의

        장문준,황태식,손대곤,이한식 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

        For the emergency patients in need of immediate resuscitation, cardiac catherization along with intensive cardiac monitoring is necessary to evaluate the cardiovascular stability. But this method requires machinery, technique and time which limits its use in emergency situations. In 1961, Allgower and Buri first discribed shock index, heart rate divide by systolic blood pressure, as easy to calculate and easy to use in acute settings given the simple measurements of the heart rate and the blood pressure. It has been said in circulatory failure patients shock index is inversely related to left ventricular stroke work. Because shock index is an indicator for resuscitation and also a prognostic indicator it could be applied in triaging an emerency patients. Therefore we studied the significance and the possible triage application of shock index in emergency patients. In the period of 6 months from May 1 to October 31, 1994. Among total 15,782 patients, who visited Yonsei University-affliated Yong Dong Emergency Department, 2425 patients were included in the study. There were 201 admissions to the intensive care unit and 2105 patients to general beds and 199 selected patient from discharged. Retrospective chart review for pulse rate, systolic blood pressure, diastolic pressure and shock index was done. Statistical analysis was performed using t'-test, p value of less than 0.05 was designated significant. Average shock index for ICU patients were 0.96 ±0.50, general ward admittees were 0.67 ±0.18, and discharged were 0.65 ±0.16. There were significant statistical difference in shock indices between ICU and general ward patients, and ICU and discharged patients. Shock index is helpful in identifing patients with potential for admission to the ICU in emergency situations. Therefore we conclude that the shock index should be recognized as a triage tool.

      • KCI등재

        전기손상으로 인한 심장질환자의 회복 1례

        장문준,황태식,최성욱,김인병,손대곤,조광현,이한식 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

        An unconscious 20 year old male carried into the emergency department after an electric shock injury 20 minutes earlier. Cardiopulmonary resuscitation was undertaken when asystole appeared on the electrocardiograph monitor. A 12-lead electrocardiograph was taken when in that myocardial infarction was found after performing cardiopulmonary resuscitation on an electrical injury patient. We present out case's electrocardiographs with echocardio-graphic findings and radionuclide imaging studies.

      • KCI등재

        불완전 전뇌 허혈후 소생의 백서 모델을 이용한 재관류 뇌혈류량과 허혈성 뇌조직 손상도와의 관계

        서정필,송근정,황태식,정연권,신백효,김승호 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

        Background: Experimental data indicate that low-flow reperfusion following prolonged cardiocirculatory arrest may aggravate early cerebral microcirculatory reperfusion disorders. We investigated the influence of cerebral reperfusion flow change to the ischemic histopathologic damage of brain tissue after incomplete forebrain ischemia in rats. Materials and method: Anesthetized Sprague-Dawley rats were undergone ligation of both internal carotid artery by microvascular clamp for 10 minutes. After release of the clamp, reperfusion was started with several different flow levels (0, 10, 20, 30, 50, and 100%) of internal carotid artery comparing to pre-clamping phase using flowmeter. After 15minutes of reperfusion, rat brains were prepared by perfusion-fixation with 3% formaldehyde. Under light microscopic examination of Hematoxylin-Eosin stained tissue slide, histopathologic damage was examined at cortex, putamen, and hippocampus regions. Categorical hisotopathologic damage scores were derived in each regions by manual counts of ischemic neurons. Result: The histopathologic damage scores were 0, 10.2±0.5, 7.6±1.5, 5.9±1.4, 5.0±2.8, 3.5±0.7, and 1.0±0.0 in control, 0, 10,20, 30, 50, and 100% reperfusion groups, respectively(p<0.05). Conclusion: Our results showed significant increment of brain histopathologic damage scores along with decreasing amount of cerebral reperfusion flow after incomplete forebrain ischemia. We believe restoration of reperfusion flow to pre-ischemic level would be a critical component in attenuation of brain ischemic damage.

      • KCI등재

        응급실에서 소아환자의 진정제로서 케타민(Ketamine)의 사용

        서정필,박준석,황태식,장석준,김승호 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

        Background: Ketamine use in emergency room has been increased. It has rapid onset of action and appropriate duration of action. It does not need endotracheal intubation and produces potent analgesia, sedation, and amnesia. The object of this study is to determine the safety and the degree of physician's satisfaction in relation to ketamine use. Materials and Methods: This is a prospective study using protocol. Pediatric trauma patients who need sedation were given IM ketamine(4 ㎎/㎏) and atropine(0.01 ㎎/㎏) in a same syringe. Monitoring of patients was done by EM residents and complications of ketamine use were recorded. Physician's satisfaction was also recorded after the procedure. Results: Intramuscular ketamine was administered 54 times, mainly for laceration repair. Physicians completed protocol for 51 of treated children. The median time for onset of sedation was 6.5±2.4 min, and duration of action was 32.4±10.8 min. Hypersalivation occurred in 9.8%(n=5); random movement 3.9%(n=2), emesis during procedure(n=1), emesis at home(n=1), and transient oxygen desaturation(n=1). All were quickly identified and treated without specific airway management and sequelae. Of 84% of physicians was satisfied with ketamine use for pediatric sedation. Conclusion: Intramuscular ketamine can be administered safely and satisfactorily in emergency room to facilitate pediatric procedures in conjunction with a defined protocol and appropriate monitoring.

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