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Novel Methylation Biomarker for Non-invasive Diagnostics in Lung Cancer
오태정,( Chang Hun Lee2 ),( Min Ki Lee ),( Yeul Hong Kim ),( Sang Yull Lee ),( Hyo Sung Jeon ),( Shin Yup Lee ),( Seung Soo Yoo ),( Jae Yong Park ),( Sung Whan An ) 대한결핵 및 호흡기학회 2012 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.114 No.-
To identify aberrantly hypermethylated DNA in lung cancer cells we established a genome-wide analysis for hypermethylation sites, namely Methyl DNA Isolation and Amplification (MeDIA) coupled-CpG microarray analysis. In the comprehensive methyaltion profiling analysis between human lung cancer, A549 cells and normal NHBE cells, we observed that several clusters of genes show a significant level of aberrancy in CpG island methylation pattern in cancer cells compared to normal cells. We further identified PCDHGA12 gene as a new marker of non-invasive diagnostics for lung cancer based on followings. 1) Transcription of PCDHGA12 gene is reactivated after treatment of A549 cells with demethylating agent. 2) Bisulfide clonal-sequencing reveals that CpG island of PCDHGA12 shows a distinctive differential methylation between two cell lines. 3) Pyrosequencing-based quantitative methylation assay for such region in tumor and non-tumorous tissues from lung cancer patients shows aberrant hypermethylation in 37 (92%) of the 40 tumor tissues. In clinical validation by pyrosequencingin induced-sputum of lung cancer patients (n=87) and healthy controls (n=51), we observed aberrant hypermethylation incident at significantly elevated level in samples derived from lung cancer patients. According to the optimal threshold calculated by ROC curve analysis, sensitivity and specificity of PCDHGA12 was 86.2% and 82.4%, respectively. PCDHGA12 methylation status could be a potential methylation biomarker alone or combined with others for the screen and the detection of relapse of lung cancer.
금호강수계 수질과 하천유역의 토양 및 농작물의 중금속루 오염에 관한 연구(II)
金相烈,李萬正,趙康烈,崔閏壽,石敬順,禹美姬,李蘭姬 대구효성 가톨릭 대학교 1984 연구논문집 Vol.29 No.2
Soil are mostly sandy and it has a little clay below 10%. In the fine sand fraction, quartz, plagioclase and alkali-feldspar are dominant in almost all samples. Small amounts of altered-feldspar, muscovite, biotite, hornblende and plant opal are present in some samples. They are mainly derived from weathering prodructs df granite, granodiorite and arkose or is mixture. The clay minerals are mainly expanding or nonexpanding 14A˚minerals, illite and kaolin minerals. Nonexpanding 14A˚minerals seems to be dioctahedral vermicurite which sandwiches gibbsite or chlorite.
김성률,김기현,정갑열,김정만,박경일,김준연,이상주,김원술 동아대학교 부설 산업의학연구소 1995 산업의학연구소 논총 Vol.- No.2
The objective of this study is to predict the high risk group of coronary artery disease from body mass index, blood pressure, fasting blood sugar and serum lipids level using the method of discriminant analysis. Variables with significant difference between coronary artery disease group and normal group were HDS-C, LDL-C/HDL-C, LDL-C, and TG. But the acuity did not exceed 70% in any single variable. As the results of discriminant analysis, statistically significant discriminant variables were HDL-C, T-chol, FBS and TG. The discriminant equation was(Y) = -0.06759(HDL-C) + 0.01498(T-chol),+0.01923(FBS) - 0.01421(TG) + 0.5187, and the overall discriminant power using the above 4 variables was 79.3%
諸商律,李相麗 慶北大學校 1968 論文集 Vol.12 No.-
The authors studied on the effects of unarranged root transplantations rice plant for growth and products at paddy farm of Kyung Pook Univ. in 1967. The results obtained were as follows; 1) Transplanting of unarranged root gives delayed growth at each seeding dates and that about a week was delayed at the latest transplanting block.. Base parts of the unarranged roots were decayd:it was the period to absorb the nutrition at the block of arranged root while growth of unarranged root was delayed because of new root formation at 2nd and 3rd nodes. 2) Earing period was delayed but maturity was hastended at block of unarranged root, These Phenomena was derived from irregular vegetative growth and shortened maturity, the autors believed. 3) Weight of defective grain was high while straw weight was much lowered, So it is the top priority problem to arrange the root when transplanting of rice plant ofr augmentation.