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후두 및 하인두 암종에서 p53단백 발현과 Espstein-Barr Virus 검출
최영환,도남용,나한조,이도용,노용훈,김완수,최종선 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2
Background and Objectives : When p53 cancer suppressor gene, occurs gene deletion or point mutation, malignancy develops by loss of p53 function with abnormal p53 protein. The Epstein-Barr virus (EBV) is the causative agent of certain type of lymphoma and undifferentiated nasopharyngeal carcinoma. However, the role of EBV as a causative factor in other head &eck tumors is not fully elucidated except nasopharyngeal carcinoma. This study, the author examined that p53 expression and detection rate of EBV correlate to development of laryngeal and hypopharyngeal squamous cell carcinoma(SCC) and play the possible role of prognostic indicators. Materials and Methods : Formalin-fixed, paraffin-embedded tissue specimen from 32 cases of larynx and hypopharyngeal squamous cell carcinomas were studied by immunohistochemical staining for p53 and EBV. The results of analysis were compared with clinicopathological parameters. Results : p53 expression was 56.3% (18 cases) and the detection rate of EBV was 43.6% (14 cases) of 32 cases in laryngeal and hypopharyngeal squamous cell carcinomas. p53 expression was correlate with histologic grade (p<05) only. Detection of EBV was not correlate with clinicopathological parmeters. Conclusion : These results suggest p53 expression and the detection of EBV may be related with development of laryngeal and hypopharyngeal squamous cell carcinoma. And, the expression of p53 protein can be used as a prognosticator in laryngeal and hypopharyngeal squamous cell carcinoma under certain limitation.
Yong‑Min Kim,Ha‑Seung Seong,Jung‑Jae Lee,Da‑Hye Son,Jin‑Su Kim,Soo‑Jin Sa,Young‑Sin Kim,Tae‑Jeong Choi,Kyu‑Ho Cho,Joon‑Ki Hong,Jung‑Woo Choi,Eun‑Seok Cho 한국유전학회 2020 Genes & Genomics Vol.42 No.12
Background: Woori-Heukdon (KWH) is a Korean synthetic pig breed generated using Chookjin-Duroc (KCD), Chookjin-Chamdon (KCC), and their crossbreds. Currently, there is a severe lack of studies investigating the Korean breed populations including wild boars (KWB) throughout the genome. Objective: This study was performed to investigate the genetic characteristics of Korean pig populations at the genome-wide level. Methods: Using the SNP dataset derived from genotyped and downloaded datasets using the Illumina PorcineSNP60K BeadChip, we compared the genomes of 532 individuals derived from 23 pig breeds to assess the genetic diversity, inbreeding coefficient, genetic differentiation, and population structure. Results: KWB showed the lowest average expected heterozygosity (HE = 0.1904), while KWH showed the highest genetic diversity (HE = 0.02859) among Korean populations. We verified that the genetic composition of KWH, showing USD of 74.8% and KCC of 25.2% in ADMIXTURE analysis. In population structure analyses, KCC was consistently shown to be separated from other pig populations. In addition, we observed gene flow from Western pigs to a part of Chinese populations. Conclusion: This study showed that Korean native pigs, KCC have genetic differences in comparison with Chinese and Western pigs; despite some historical records and recent genetic studies, we could not find any clear evidence that KCC was significantly influenced by Chinese or Western breeds in this study. We also verified the theoretical genomic composition of KWH at the molecular level in structure analyses. To our knowledge, this is the first genomic study to investigate the genomic characteristics of KWH and KCC.
Plasminogen kringle (angiostatin) 분획의 유효부분 분석
최영기,서원덕,이종수,신광순,김철중 충남대학교 수의과대학 동물의과학연구소 1998 動物醫科學硏究誌 Vol.6 No.-
In order to inhibit the growth of the malignant tumor, the development of various drugs against the malignant tumors has been archived. The combination of these drugs made the tumor therapy possible, but in many cases, secondary matastasis of the tumor to the other organs after its removal has been frequently reported. The angiostain, recently purified and cloned, not only promtes the angiogenesis of the tumor itself in the primary tumor but also inhibits the angiogenesis and metastasis of the secondary tumors. In this study, the nucleic acid sequences of the angiostatin was investigated. And the angiostain gene was expressed in a prokayotic expression system(E. coli) and a eukayotic expression system(Pichia pastoris). The angiostain gene was futher subcloned into 6 clones to characterize its biological activity. In the near future the biological activity and the biochemical property of the protein encoded by each clone will be elucidated.
20km와 150km의 도로싸이클 주행이 혈중 렙틴, 지질과 호르몬 수준에 미치는 영향
최용어,권봉안,오재근,김범수,조준용,김문희 한국체육대학교 체육과학연구소 2000 韓國體育大學校附屬 體育科學硏究所論文集 Vol.19 No.1
Serum leptin, glucose, lipid profiles (free fatty acid, triglyceride, total cholesterol) were determined in two groups of subjects undergoing long and short strenous cycle race, 8 men who fasted overnight and then pedaled 20km cycle race and 8 men, 150km cycle race, respectively, Blood samples were collected before race, immediately after cessation of race and 2hr, 6hr after the end of race period. Cyclist pedaling 20km cycle race and cyclist pedaling 150km cycle race showed no statistical differences in leptin level. After 6hr of rest, leptin concentrations were gradually decreased but showed no statistical different in both groups. Epinephrine (p〈.01) and norepinephrine (p〈.001) concentration in comparison to pre-race levels were increased significantly. But insulin concentration in comparison to pre-race levels were decreased significantly (p〈.001). Glucose (p〈.01), free fatty acid (p〈.001), cholesterol (p〈.001) and triglyceride (p〈.01) were increased immediately after cessation of race in both groups.
嫌氣性 充塡塔內의 2段 連續 生化學反應에 關한 모델硏究
崔龍洙 건국대학교 1988 論文集 Vol.26 No.1
A mathematical model was developed for the estimation of effluent concentrations in an anaerobic filter. Effectiveness factors ??a, ??b for irreversible two step consecutive reaction with the nonlinear Monod kinetics were calculated numerically. The profiles of concentrations along filter height were predicted using calculated ??a, ??b. These profiles of calculated conceentrations were compared with those of experimental data. The calculated ??a and ??b were increased to be proportional to the filter height and approached to 1 at the upper levers of the filter. The difference between calculated and measured concentration was almost negligible at each case and the errors of the treatment efficiency of the ultimate effluents were about 10 percent.
흐름 주입 분석법에 의한 하이포아염소산 이온의 분광학적 정량
崔鎔旭,李秀令,金美警 전주대학교 1999 論文集 Vol.24 No.2
흐름주입 분석법(FIA)에 의한 간접 요오드화 UV 검출법으로 하이포 차아염소산 이온을 신속하게 정량하는 방법을 연구하였다. FIA장치를 최적화하기 위해 용리액의 pH, 요오드화 이온의 농도, 혼합 및 반응코일의 길이, 시료주입량 및 유속, 온도 및 검출파장에 대한 변화를 고찰하였다. pH 8.3에서 하이포아염소산 이온은 요오드화 이온을 선택적으로 산화시키고 자신은 염화이온으로 환원되었다. 방해이온을 제거하기 위한 가리움제로서 에틸랜다이아민이 가장 좋은 효율을 나타내었다. 하이포아염소산 이온의 검정곡선은 0.03∼0.3mg/L의 농도범위에서 0.999이상의 직선성을 나타내었고, 검출한계는 0.007mg/L 이었다. 이러한 분석조건하에서 몇몇 전주근교 상수 중 총 잔류염소의 농도를 정량하였다. The determination of hypochlorite ion by flow injection analysis(FIA) with iodometric UV detection was investigated. The pH of the acid stream, the concentration of the iodide ion, the length of the mixing and reaction coils, the injection sample size, and flowrate were optimized as parameters for determining total chlorine residuals by FIA method. Iodide was selectively oxidized to iodine by hypochlorite ion at pH 8.3. Ethylenediamine as masking agent for masking interference ions from the sample was given the best efficency. Calibration curve presented linear range of 0.03-3mg/L for hypochlorite ion with a correlation coefficient of 0.999 or better, The detection limit was found to be 0.007mg/L for hypochlorite ion, Under these analytical conditions, total chlorine residuals in several tap water sampled in the city of Jeonju were analyzed.
최순규,엄기수,성현순,김윤영,이시우,정대일,이용균 동아대학교 환경문제연구소 1994 硏究報告 Vol.17 No.2
The absorption ability of low density heavy metal of pine needles and cones is better than one of existing absorption materials in treatment ability and experimental condition. The elimination ability of chlorine of pine needles and cones is better than one of active carbon. In elimination of trihalomethane, the effect of treatment of pine needles is lower than one of pine cones. And surface of pine needles and cones after absorption of heavy metal ion was observed by Scanning Electron Microscope(SEM). Application and availability of pine needles and cones as absorption material need lots of experiments. The experiment on Gal-Bi(fallen leaves) is proceeding.