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미토콘드리아 DNA의 제한요소 분석법(RFLP)에 의한 느타리 버섯의 분류
황소영,정경숙,이미경,조남영 대전대학교 기초과학연구소 1996 自然科學 Vol.7 No.2
황악산에서 채집된 느타리 버섯의 분류를 위하여, 4종류의 느타리과에 속하는 버섯들과 함께 미토콘트리아 DNA를 분리하여 여러 제한효소로 처리 후 나타나는 절편들의 양상을 비교하여 계통분석을 수행하였다. 여러 제한효소 중 4가지의 제한효소를 선택하여, 절편을 얻은 후 NTSYS-pc program을 사용하여 분석한 결과, 채집된 버섯은 형태학적으로 느타리와 유사하였지만, RFLP 법으로 판단할 때 오히려 사철느타리와 더 연관성이 있는 것으로 나타났다. 따라서 보다 객관적인 분류를 위하여 형태학적 분류만으로는 한계가 있고, 분자생물학적인 분석 등 다양한 기준에 의해서 수행되어야 한다고 판단된다. To identify the strain (TUM004) which was isolated from Mt. hwangak, the restriction enzyme analysis of mitochondrial DNA was accomplished using four different strains of Pleurotus as a standard strain. Pattern of fragments generated by 4 different restriction enzymes (BamHl, EcoRl, Hindlll, Xdal)was analyzed by using NTSYS-pc program. Results showed that TUM004 was more related to Pleurotus florida rather ,than to Pleurotus ostreatus. Results also imlpy that RFLP of mitochondrial DNA is a good classification system to identify the unknown strain to the genus level.
골격근 근형질세망의 ATP유도 ^45Ca-uptake에 대한 Thapsigargin및 Vanillylnonanamide의 영향
황의강,배소현,홍장희,허강민,김진회,이재흔,석정호 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.2
To investigate the effect of thapsigargin(THP) and vanillylnonanamide(VN), derivative of capsaicin, on the ATP-induced ^45Ca-uptake in the sarcoplasmic reticulum(SR) of the skeletal muscle, the SR vesicles were prepared from the back muscle of the rabbit, and ^45Ca-uptake was carried out. The results as follows: ATP-induced ^45Ca-uptake of skeletal muscular SR was significantly increased by 1 mM ATP. It was significantly blocked by 5 μM THP, but slightly decreased by 20 μM VN. The combined effect of THP and VN on the 45Ca-uptake of the SR vesicles was much potentiated than the sum of each effect of them. The above results suggest that the action of VN, being slightly influential to ATP-induced Ca-uptake but potentiating the effect of THP on the Ca-uptake, might be related with direct perturbation of the SR membrane or exposure of the THP-binding site.
국내 하천 퇴적물 건강성평가를 위한 Microtox 독성시험 조건확립 연구
정홍배,박정규,문성환,류태권,김소정,배철한,황인영 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.4
1. 하천 퇴적물 공극수, 증류수 추출용액 및 유기용매 추출액을 pH6.0~6.5 범위로 조절한 후 Microtox 독성을 측정하는 것이 퇴적물내의 암모니아 독성이 배제된, 유해화학물질 오염에 의한 퇴적물 독성을 평가하는 방안임을 확인하였다. 2. 퇴적물에 대해 공극수, 증류수 추출물, 유기용매 추출물 구분하여 Microtox 독성을 구하는 것이 퇴적물 내 유해화학물질의 독성발현 특성을 예측할 수 있는 기법이라고 사료된다. 3. 조사정점 내 시료 채취 지점간 독성에 편차로 인하여, 동일 정점의 반경 50~100m 내에서 최소 4지점 이상의 퇴적물을 확보하는 것이 해당 정점의 독성 대표값을 산출할 수 있는 방안이 된다고 판단된다. 4. 한강수계인 남한강 지천인 복하천과 양화천, 금강수계인 청주 미호천, 대전 갑천, 낙동강수계인 대구 금호강, 영산강수계인 황룡강 그리고 익산 만경강을 대상으로 한 예비 조사한 결과, 집중연구대상 하천으로의 조건은 금호강이 가장 우수하였다. 5. 하천 퇴적물의 증류수 추출액과 유기용매 추출액의 Microtox 독성값 간의 상호 상관성이 높았다. 그러나, 농축 과정이 용이하므로 정점간 비교를 위한 독성 측정시 유기용매 추출액을 사용하는 것이 바람직하다고 사료되었다. Six rivers were selected as preliminary screening sites to determine the test conditions of Microtox in assessing the toxicity of the sediment. In addition, a pH range of 6.0--6.5 was established in testing pore water, aqueous extracts and organic extracts. Each extractable fraction of sediment showed different toxicities. Therefore, in order to properly examine the toxicity in the sediment, all extractable fractions of sediment samples needed to be tested with Microtox. Thus, sediment samples were additionally collected from at least 4 secondary sites within 50~100 m area of the primary sampling site to reduce any variation or deviation in toxicity assessment. From all sediment toxicity data that was collected from this study, it was concluded that the Keumho river was the most polluted with the highest sediment toxicity of all the rivers analyzed and needed further detailed research on its pollution problem.
여호와의 증인 환자에서 산과적 출혈 후 무수혈 치료 2예
김재령,여소진,이해혁,김정식,김태희,남계현,이권해,이임순,박진화,황경호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
Jehovah's Witness comprise a unique obstetric population. Their refusal of blood stems from an interpretation of a literal translation of the Bible, and it is this belief that puts them at an increased risk of morbidity and mortality if hemorrhage occurs. We report two cases of a Jehovah's Witness who bled massively due to obstetric hemorrhage, refused blood transfusion and had profound anemia. The patients were treated with recombinant human erythropoietin, parenteral iron and oxygen. And they were treated on an intensive care unit with intermittent positive pressure ventilation. We reviewed with literature considering the therapy for acutely anemic patients who refuse transfusion to decrease the duration of the most severe anemia.
박종빈,김학렬,주현준,유태양,신성남,신정현,송정섭,황기은,김소영,양세훈,정은택 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.2
최근 흡연을 시작한 젊은 성언에서 급성 호산구성 폐렴의 발생에 대한 증례가 보고되고 있다. 급성 호산구성 폐렴은 대개 발열을 동반하기 때문에 초기에는 감염성 폐렴으로 잘못 진단, 치료되는 경우가 많다. 아직 정확한 병태 생리 및 조직학적 소견은 밝혀져 있지 않지만 병력 청취 및 임상 양상, 방사선 소견의 관찰을 통해 급성 호산구성 폐렴을 의심하고, 진단을 위해 기관지 폐포 세척액 검사를 시행한다면 좀 더 쉽게 진단 내릴 수 있을 것이다. 본 저자들은 최근 처음 시작한 흡연에 의해 발생한 급성 호산구성 폐렴을 진단하고, 스테로이드를 투여하여 성공적으로 치료한 환자 2예를 경험하였기에 이를 문헌 고찰과 함께 보고하는 바이다. Acute eosinophilic pneumonia(AEP) is characterized by acute febrile respiratory illness associated with diffuse pulmonary infiltration and pulmonary eosinophilia. The specific etiology for acute eosinophilic pneumonia is elusive. By some investigators, cigarette smoking is suggested as a causative substance which can cause AEP. In recent, the authors experienced two cases of AEP following cigarette smoking. Both cases had characteristic features including age around 20 years, new onset smoking before occurance of AEP, diffuse infiltration on chest radiography, pulmonary eosinophilia based on bronchoalveolar lavage and acute improvement after steroid therapy. These clinical features are resemble with previous smoking induced AEP case reports. Base on these clinical features, cigarette smoking associated AEP could be diagnosed more easily.
Analysis of Fisetin and Cucurbitacin of Cucumber (Cucumis sativus L.)
So-Jeong Hwang,Yeong-Jee Kim,Jae-Eun Lee,Eun-Ae Yoo,Soo-Kyeong Lee,Ae-Jin Hwang,Hyung-Jun Noh 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Cucumber (Cucumis sativus L.) is a crop belonging to the Cucurbitaceae and is a vegetable distributed and consumed around the world. It is known to have pharmacological activities like anticancer, antioxidant because of phytochemical. Fisetin, a polyphenolic phytoconstituent, and cucurbitacin, a group of triterpene compounds, are the most widely known phytochemical of cucumber. This study aim to analyze fisetin and cucurbitacin on cucumber’s edible parts. All of 150 cucumbers germplasm were analyzed of fisetin and four species of cucurbitacin (cucurbitacin E-2-O-glucoside (CuE-Glu), cucurbitacin D (CuD), cucurbitacin I (CuI), cucurbitacin B (CuB)). Samples were stored at -70°C, freeze-dried, and extracted with methanol for analysis by HPLC with DAD. As a result, among 150 total samples, nine of fisetin, two of CuE-Glu, two of CuD, six of CuI, and four of CuB were detected. Amount range of each component was shown as follows (mg/kg): fisetin, 4.98 to 12.74; CuE-Glu, 4.96 to 13.31; CuD, 9.65 to 10.21; CuI, 4.00 to 9.24; CuB, 2.97 to 14.61. In particular, resource no. IT200104 and no. 903729 showed the highest fisetin (12.74 mg/kg) and total cucurbitacin (14.61 mg/kg) content.
Hwang, So-Jeong,Park, Youn-Min,Um, Ik-Hwan Korean Chemical Society 2008 Bulletin of the Korean Chemical Society Vol.29 No.10
Second-order rate constants (kN) have been measured for Michael-type addition reactions of a series of alicyclic secondary amines to 1-phenyl-2-propyn-1-one (2) in MeCN at 25.0 ${\pm}$ 0.1 ${^{\circ}C}$. All the amines studied are less reactive in MeCN than in $H_2O$ although they are more basic in the aprotic solvent by 7-9 p$K_a$ units. The Bronsted-type plot is linear with $\beta_{nuc}$ = 0.40, which is slightly larger than that reported previously for the corresponding reactions in $H_2O$ ($\beta_{nuc}$ = 0.27). Product analysis has shown that only E-isomer is produced. Kinetic isotope effect is absent for the reactions of 2 with morpholine and deuterated morpholine (i.e., $k^H/k^D$ = 1.0). Thus, the reaction has been concluded to proceed through a stepwise mechanism, in which proton transfer occurs after the rate-determining step. The reaction has been suggested to proceed through a tighter transition state in MeCN than in H2O on the basis of the larger $\beta_{nuc}$ in the aprotic solvent. The nature of the transition state has been proposed to be responsible for the decreased reactivity in the aprotic solvent.