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        검색결과 61

        47.
        2016.10 서비스 종료(열람 제한)
        Background : Haskap berries commonly refer to fruits of Lonicera caerulea L., recognized by the Japanese aborigines as the “The elixir of life.”. Due to their recent arrival on the North American market, haskap berries have not yet been positioned among other berries and compared in terms of their phytochemical content. And haskap berries have higher ascorbic acid and anthocyanin content than other berries known for their health-promoting benefits, such as blueberries. However, no study has reported on the antioxidant and anti-cancer activity of Lonicera caerulea stem. The purpose of this study is to present the current research on the chemical content, antioxidant and anti-cancer activities of Lonicera caerulea stem. Methods and Results : The stem of Lonicera caerulea L. ware dried in the shade at room temperature and extracted with 100% methanol. The extract was suspended in deionized water and partitioned sequentially with n-hexane, chloroform, ethyl-acetate and butanol (water saturated BuOH) fractions. Antioxidant activities were measured by determination of antioxidants, DPPH (2,2-diphenyl-1-picrylhydrazyl). Cell viability was determined by the MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide] assay. All cell lines were purchased from the Korean Cell Line Bank (Seoul, Korea). All results were performed with three replications were processed statistically. By DPPH assay, the Lonicera caerulea L. the highest activity was obtained from the ethyl-acetate fraction (IC50=15.46 ㎍/㎖). By MTT assay, the chloroform fraction showed a significant growth inhibiting effect on MCF-7 (Human breast cancer, IC50=225.91 ㎍/㎖), COLO 205 (Human colon cancer, IC50=179.55 ㎍/㎖), but on AGS (Human stomach cancer) and other fractions it did not show effect. Conclusion : We demonstrated that Lonicera caerulea L. stem extract and fractions has antioxidant and antiproliferation activity in vitro. Further studies should identify the active constituents in Lonicera caerulea L stem to evaluate the potential in vitro antioxidant and antiproliferation activities of the extract.
        48.
        2014.06 서비스 종료(열람 제한)
        Prevalence of the coronary artery anomaly is approximately 1% of the population who undergo coronary angiography. The anomalous origin of the right coronary artery (RCA) as a branch of the left anterior descending artery (LAD) is a very rare variation of single coronary artery. The anatomic variation has no clinical significance. However, some patterns of congenital coronary artery anomalies can cause clinical manifestations of myocardial ischemia, reducing myocardial perfusion. We report on a case of a 78-year-old man who had anomalous RCA arising from the proximal part of the LAD, which probably caused chest pain.
        49.
        2010.04 KCI 등재 서비스 종료(열람 제한)
        Methyl jasmonate(MeJA) treatment promotes the plant secondary, especially triterpene saponin which is main compounds in Platycodon grandiflorum. We were performed 5,760 expressed sequence tags from MeJA treated hairy root. Total number of ESTs are 2,536 (811 contigs and 1,725 singletons) among them 2,299 are pass the annotation. The most abundant transcript were encoding fatty acid desaturase (FAD) and lots of secondary metabolite transcript were observed. Four MVA pathway genes (HMGS, HMGR, MK, MDD) and one MEP pathway gene (IDI) are identified. The unigene were classified into three major functional categories by standard GO (Gene Ontology) - cellular component, molecular function and biological process. In this study we were cloned four genes from ESTs : HMGS (1401bp ORF), MK (1167bp ORF), MDD (1254bp ORF), IDI (909bp ORF)
        59.
        2006.06 KCI 등재 서비스 종료(열람 제한)
        Self incompatibility (SI) of Cruciferous crop has been studied not only to find out the evolution of the self incompat-ibility system, but also to identify the S haplotypes of the plant materials on the practical breeding programs. It has been reportedtha
        60.
        2003.06 KCI 등재 서비스 종료(열람 제한)
        The Korean native rice collection consists of landrace and weedy strains. The weedy strains are represented by two dis-tinctive populations, Share and red rice. The 242 representative accessions of Korean native rice collection were selected basedon the p
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