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권두한(Dur Han Kwon),김만배(Man Bae Kim),윤도영(Do Young Yoon),이영희(Young Hee Lee),김재화(Jae Wha Kim),이희구(Hee Gu Lee),최인성(In Seong Choi),임종석(Jong Seok Lim),최용경(Yong Kyeung Choe) 한국약용작물학회 2003 한국약용작물학회지 Vol.11 No.1
Aqueous extracts form eleven species of Korean medicinal plants were screened for antiviral activity against transmissble gastroenteritis virus (TGEV) and porcine epidemic diarrhae virus (PEDV). Seven of eleven plant extracts were found to have cytotoxicity for ST cells at the concentration of 1㎎/ml, and ten extracts except Ephedra sinica were found to have non-cytotoxicity for Vero cells at the same concentration. Extracts of Znthoxylum piperium, Cudrina tricuspidata, Clerodendron trichomum, Sophora flavescens, effectively inhibited TGEV, respectively. There were the antiviral activity aganist TGEV in the extracts of Glesdistsia sinensis, Euonymus alatus, Ficus carica, Solanum nigrum, Ephodra sinica, Xanthium strumarium, and Acanthopanax seeliflorus in spite of their cytotoxicities. Nine extracts except Xanthium strumarium and Acanthopanax seeliflorus were found to have the antiviral activitity against PEDV. Extracts of Zanthoxylum piperium, Sophora flavescens was shown to have antiviral activities against both TGEV and PEDV.
권두한,정태화,남효진,송은영,변시명,김희정,김경아,이홍수 THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 1998 Journal of biomedical laboratory sciences Vol.4 No.2
과산화 효소와 포도당 산화효소의 효소반응을 이용하여 혈액 중 당을 측정하는 혈당측정용 스트립을 개발하였다. 멤브레인에 포도당 산화효소와 과산화 효소, 색원체를 건조 처리하면 혈당이 멤브레인에 처리된 포도당 산화효소와 즉각 반응하여 과산화 수소를 발생하고 발생된 과산화 수소가 과산화 효소와 반응하여 착색물을 형성한다. 제조된 스트립은 혈액과 접촉하면 반응시간 2∼3분 이내에 0∼800mg/dl의 혈당에 대하여 농도에 따라 연 녹, 청녹, 짙은 청색을 나타내며 이때 민감도는 40 mg/dl이었다. 육안용 혈당 스트립을 이용하여 정상을 포함한 당뇨 환자의 혈당 농도를 측정한 결과 Ames사와 BM사에서 시판하고 있는 제품과 유사한 결과를 얻을 수 있었다. 본 연구에서 개발된 스트립이 자동 분석기기의 재료로 활용될 수 있는지 여부를 알아보기 위하여 분광 비색계로 발색 반응의 최적 파장을 분석하고 최적 파장에서 각 혈당 농도별 반사 밀도를 측정하여 검정선을 얻었다. 이 검정선에 의해 임상 혈청시료의 혈당 농도를 측정한 결과 일본의 Kyoto Daiichi사의 혈액 분석시스템과 유사한 결과를 얻었다. 이로서 본 연구에서 개발한 혈당 스트립을 이용하여 혈액 중 혈당량을 육안으로 측정할 수 있음은 물론 자동 분석기기의 기본 시료로 이용될 수 있음을 확인할 수 있었다. We have developed a simple and accurate strip test that measures the blood glucose level semiquantitatively by visual observation, or qualitatively by using UltraScan spectrocolorimeter. The strip has solid phase reagents, including glucose oxidase, peroxidase, chromogen, affixed to a plastic support. The strip test is capable of measuring blood glucose level in the range of 0∼800 mg/dl and generating the results within 2 to 3 minutes. Human blood specimens obtained from normal individuals and the diabetic patients were evaluated by the new blood glucose strip and by the kit supplied by other commercial products. The test results exhibit the correlation coefficient of 0.964. The new test strip is proven simple and accurate, and it offers an alternative to the commercially available glucose tests.
Antiviral Activity of Corylus heterophylla Fisch Against Porcine Epidemic Diarrhea Virus Infection
Lee, Jae-Sook,Kwon, Dur-Han,Song, Hyea-Suk,Choi, Hwa-Jung,Yoon, Kyungah The Korean Society for Microbiology 2016 Journal of Bacteriology and Virology Vol.46 No.3
The porcine epidemic diarrhea virus (PEDV) has recently been shown to cause huge economic losses in the global pork industry. Our results demonstrated that the extract dose-dependently inhibited the replication of PEDV and reduced the visible cytopathic effect (CPE). Treatment with C. heterophylla Fisch extract resulted in marked reduction of PEDV-induced cytokine and chemokine expression. The antiviral activity of C. heterophylla Fisch extract on PEDV replication was found to be primarily exerted at the early stages after infection. Taken together, our data indicate that C. heterophylla Fisch extract may be a good therapeutic agent for use against PEDV and also a potential candidate to be evaluated against other human and animal coronaviruses.
윤승규 ( Seung Kew Yoon ),( Dur Han Kwon ),( Hyun Jung Kim ),( Eun Joo Chang ),( Hyok Yun Kwon ),( Jong Young Choi ),( Si Hyun Bae ),( Kyu Won Chung ),( Hee Sik Sun ),( Doo Ho Park ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
<Objective> The purpose of this study was to evaluate a antiviral effect and safety of aqueous extract from A. Eupatoria on hepatitis B virus(HBV) infection in vitro and vivo. <Methods> To determine the antiviral activity of A Eupatoria in vitro, we used
Creatine Kinase Isoenzyme 의 분리와 정제에 관한 연구
권두한,윤도영,이홍수,최명자,최인성,정태화 ( Dur Han Kwon,Do Young Yoon,Hong Soo Lee,Myung Ja Choi,In Seong Choe,Tai Wha Chung ) 생화학분자생물학회 1992 BMB Reports Vol.25 No.4
Bovine creatine kinase MM was purified from bovine heart muscle, through homogenization, ethanol precipitation, DEAE-cellulose chromatography, two step of gel filtration chromatography and affinity chromatography, Human CK-MM wa spurified from fetal human heart muscle through homogenization, ethanol precipitation, and DEAE-cellulose chromatography. Specific activities of bovine and human CK-MM were presented at an activity of 801 U/㎎ and 369 U/㎎, respectively. CK-BB from bovine brain and human fetal brain tissue were purified by homogenization, ethanol precipitation and DEAE-cellulose chromatography. Specific activities of bovine and human CK-BB appeared to 702 U/㎎ and 615 U/㎎, respectively. Ck-MB isoenzyme was synthesized by recombining each single subunit of MM and BB which were prepared by treating with 8 M guanidine-HCl, and its activity was identified on agarose gel electrophoresis.