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Demethylation of RUNX3 by vincristine in colorectal adenocarcinoma cells.
Moon, Ji Wook,Lee, Soo Kyung,Lee, Jung Ok,Kim, Ji Hae,Kim, Nami,Kim, Jin,Kim, Hyeon Soo,Park, Sun-Hwa Potamitis Press 2014 Anticancer research Vol.34 No.1
<P>Methylation-mediated inactivation of tumor-suppressor genes is a critical event during the pathogenesis of many malignancies. Vincristine is a conventional anticancer drug used to treat various types of cancers. However, few studies describe the epigenetic-based effects of vincristine. In this study, changes in the methylation of runt-related transcription factor-3 (RUNX3) were investigated in CCD18Co normal colon cells and DLD-1 colorectal adenocarcinoma cells.</P>
Sensing Technologies for Grain Crop Yield Monitoring Systems: A Review
( Sun-ok Chung ),( Moon-chan Choi ),( Kyu-ho Lee ),( Yong-joo Kim ),( Soon-jung Hong ),( Minzan Li ) 한국농업기계학회 2016 바이오시스템공학 Vol.41 No.4
Purpose: Yield monitoring systems are an essential component of precision agriculture. They indicate the spatial variability of crop yield in fields, and have become an important factor in modern harvesters. The objective of this paper was to review research trends related to yield monitoring sensors for grain crops. Methods: The literature was reviewed for research on the major sensing components of grain yield monitoring systems. These major components included grain flow sensors, moisture content sensors, and cutting width sensors. Sensors were classified by sensing principle and type, and their performance was also reviewed. Results: The main targeted harvesting grain crops were rice, wheat, corn, barley, and grain sorghum. Grain flow sensors were classified into mass flow and volume flow methods. Mass flow sensors were mounted primarily at the clean grain elevator head or under the grain tank, and volume flow sensors were mounted at the head or in the middle of the elevator. Mass flow methods used weighing, force impact, and radiometric approaches, some of which resulted in measurement error levels lower than 5% (R<sup>2</sup> = 0.99). Volume flow methods included paddle wheel type and optical type, and in the best cases produced error levels lower than 3%. Grain moisture content sensing was in many cases achieved using capacitive modules. In some cases, errors were lower than 1%. Cutting width was measured by ultrasonic distance sensors mounted at both sides of the header dividers, and the errors were in some cases lower than 5%. Conclusions: The design and fabrication of an integrated yield monitoring system for a target crop would be affected by the selection of a sensing approach, as well as the layout and mounting of the sensors. For accurate estimation of yield, signal processing and correction measures should be also implemented.
Clinical Significance of Erosive or Ulcerative Lesions Isolated in Terminal Ileum
( Sun Ok Kwon ),( You Sun Kim ),( Myoung Ki Oh ),( Sun Young Kim ),( In Hye Cha ),( Seong Yeon Jeong ),( Joo Yeon Cho ),( Jin Nam Kim ),( Jeong Seop Moon ) 대한장연구학회 2012 Intestinal Research Vol.10 No.4
Background/Aims: Although terminal ileal erosive or ulcerative lesions are frequently observed on colonoscopic examination, their clinical significance are unclear. We evaluated clinical course and significance of isolated terminal ileal erosive or ulcerative lesions. Methods: We retrospectively analyzed clinical features, number, size and histologic findings of 186 patients with isolated terminal ileal erosive or ulcerative lesions on colonoscopic examination from December 2003 to February 2012. Results: The indications for colonoscopy included screening for colorectal cancer or surveillance in 122 patients (65.6%), evaluations for symptoms in 64 patients (34.4%). Of the 186 patients, 170 underwent biopsy at the terminal ileal lesions. Histologic findings were mostly non-specific chronic inflammation except two cases of Crohn`s disease, one case of cytomegalovirus ileitis, and one case of intestinal tuberculosis. Forty six patients underwent follow-up colonoscopy and the mean duration was 17.8±14.2 months (range, 1-64 months). Of those who showed non-specific ileitis (44 patients), 35 (79.5%) showed resolution of lesions without specific treatment. In the remaining 9 (20.5%) patients, lesions were continued and two patients were diagnosed as Crohn`s disease and Behcet`s ileitis, respectively. There were no significant differences in the duration of follow-up, presence of symptoms, number and size of terminal ileal lesions between the patients who resolved and not resolved. Conclusions: Most isolated terminal ileal erosive or ulcerative lesions reveal non-specific histological findings and have a propensity to resolve without treatment. However, in small portions of patients, isolated terminal ileal lesions need careful attention because it is possible to be early inflammatory bowel diseases. (Intest Res 2012;10:350-356)
Moon, Seok-Jun,Han, Se-Youn,Kim, Dool-Yi,Kim, Beom-Gi,Yoon, In Sun,Shin, Dongjin,Kwon, Hawk-Bin,Byun, Myung-Ok 한국식물학회 2014 Journal of Plant Biology Vol.57 No.3
WRKY transcription factors play a major role in plant biotic and abiotic stress responses. In this study, WRKY transcription factor, CaWRKY1, whose expression was strongly induced by cold and abscisic acid treatment in pepper, was cloned into potato via Agrobacterium-mediated transformation of vector expressing CaWRKY1 under control of the CaMV35S promoter. The overexpression of CaWRKY1 in potato plants increased tolerance to drought stress without noticeably affecting other agricultural important factors, such as plant height, leaf size and tuber formation. In addition, CaWRKY1-overexpressing transgenic potato plants showed increased expression of abiotic stress-related genes, such as C-REPEAT BINDING FACTOR 3 (CBF3), ZINC FINGER PROTEIN ZAT10 (ZAT10), TREHALOSE-6-PHOSPHATE SYNTHASE (TPS) and LATE EMBRYOGENESIS ABUNDANT (LEA). These results suggest that CaWRKY1 can regulate drought stress tolerance in potato plants via the activation of putative stress-responsive genes.
Toxicogenomics an method for assessing toxicological effect of chemicals: A Study on Statins
( Moon Jeong Ko ),( Joon Ik Ahn ),( So Young Kim ),( Hee Jung Shin ),( Sun Ok Choi ),( Hye Joo Chung ),( Ho Sang Jeong ) 한국동물실험대체법학회 2008 한국동물실험대체법학회 학술대회집 Vol.2008 No.1
Since there are increasing needs for newly developed drugs, the number of laboratory animals used for drug-safety research is increasing as well. This world-wide need for new drugs increases eventually the necessity to develop more elaborated assay system for drug efficacy-safety test which can replace old-time animal tests. To this purpose, genomic approaches based on microarray technology are now considered as a revolutionary tool for understanding the mechanism underlying drug-cell interaction and widely employed along the drug development procedures. Genomic biomarkers such as a set of genes will be served as surrogated biomarkers for assessing efficacy-safety of drugs. In this presentation, we will introduce an in vitro system based on microarray technology to assess statin-induced myopathy. Statins are competitive hydroxy-3-metyl glutaryl coenzyme A (HMG-CoA) reductase inhibitors that block the synthesis of cholesterol from mevalonic acid. Statins are the drugs most frequently used to reduce plasma cholesterol levels and decrease cardiovascular events. However, statins have been reported to cause myopathies, such as myalgias, myositis and even rhabdomyolysis in rareoccasions. Even the side effects associated with statins have been highlighted by the withdrawal of cerivastatin from the market in 2001, but little is currently known about the effect of statins on the RNA expression profile of skeletal muscle cells in myopathy. To address those issues, we set up an in vitro assay system using differentiated myocytes from rat L6 myoblasts. By using this in vitro system, we assayed the cytotoxicity and creatine kinase activity induced by two well-known statins, cerivastatin and pravastatin. As expected, only the cytotoxicity measured with MTT assay showed a linear correlation to the applied statin concentrations provingthat CK activity assay is not a proper method to detect muscle toxicity in vitro system. After the microarray analysis of gene expression, we discoveredgenes whose expression is changed in dose-dependent manner by cerivastatin. After statistical validation, fifteen of them were selected as potential candidates for statin-induced myopathy biomarkers, more precisely statin-induced cytotoxicity biomarker. Although further investigation on the genes whose expression is highly correlated with statin treatment, it seems that gene expression analysis by microarrays is a mean of choice to understand the mechanism of action and toxicity of a drug.
Theory and Practice on One of a Kind Furniture in Postmodernism
Moon, Sun-Ok Korea Furniture Society 2007 한국가구학회지 Vol.18 No.4
This study explored contemporary furniture theory and practice in Postmodernism mentioned as one of a kind furniture based on ideas from the tradition since Modernism. Qualitative conceptual analysis as the principal methodology was used to explore the postmodern furniture adopting or reflecting ornament from the tradition presented as postmodern furniture designers' point of view differently and variously. Thus, the examples about one of a kind or one-off furniture were dealt with Postmodern ideas appeared in the doubt over Modernism, Post-Modern furniture ideas from the traditional and Modern architecture, ornamental ism, Postmodern theorists, Postmodern furniture and the criteria. As a result, although one of a kind furniture design appealed newly from and based on the ornament of the tradition has been identified as new design like one of a kind furniture which shows lack of function, the piece with the meaningful ornament makes people happier in their daily life. Hence, one of a kind furniture, a work of art, has been required as striking a balance both function or comfort and aesthetics or beauty which makes the people more enjoyable.