中國醫藥大學機構典藏 China Medical University Repository, Taiwan:Item 310903500/46271
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 29490/55136 (53%)
造访人次 : 1993792      在线人数 : 354
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻
    主页登入上传说明关于CMUR管理 到手机版


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.cmu.edu.tw/ir/handle/310903500/46271


    题名: RANK Ligand 所誘導之蝕骨細胞分化情形會被Betulinic acid所抑制
    Betulinic Acid Negatively Regulates RANK Ligand Induced Osteoclast Differentiation
    作者: 陳泓憲;Chen, Hung-Hsien
    贡献者: 醫學檢驗生物技術學系碩士班
    关键词: 連翹;樺木酸;受體活化kappa B配體;RAW264.7細胞;抗酒石酸染色;蝕骨細胞生成;Forsythia;betulinic acid;RANKL;RAW264.7;TRAP;osteoclastogenesis
    日期: 2012-08-13
    上传时间: 2012-08-31 16:38:35 (UTC+8)
    出版者: 中國醫藥大學
    摘要: 當蝕骨的溶蝕作用大於造骨細胞時就會產生骨質疏鬆症這類病徵。而許多研究已經證明,一些相關的發炎因子會在蝕骨細胞分化的進程中發揮重要作用。樺木酸是傳統中藥連翹的主要成分,具有一些抗氧化的活性。我們的研究發現,核因子Kappa B受體活化因子配體(RANKL)所誘導RAW264.7 macrophage分化成蝕骨細胞的情況會受到樺木酸明顯的抑制。而抗酒石酸酸性磷酸酶(TRAP)染色的結果顯示樺木酸在抑制蝕骨細胞分化的方面,隨著劑量上升也越來越明顯。RAW264.7巨噬細胞給予 RANKL的刺激後,會誘發細胞外訊號調節激酶(ERK),p38和c-Jun的N-末端激酶(JNK)的磷酸化。我們的實驗中發現RANKL所誘發的ERK,p38和JNK磷酸化情形會因為加入樺木酸而被抑制下來。因此,我們的實驗結果顯示出樺木酸可以透過降低RANKL所誘發ERK、p38和JNK的磷酸化情形進而抑制蝕骨細胞分化,並且保護骨質因蝕骨細胞而流失。
    Osteoporosis can occur when osteoclasts dissolve more bone than what the osteoblasts are able to replace.
    Many studies have proved that some inflammatory cytokines play an important role in the progression of osteoclastic differentiation. Betulinic acid, a main compound of traditionally used Chinese herb forsythia, has anti-inflammatory activity.
    Our study found that the betulinic acid markedly inhibited the receptor activator of nuclear factor kappa B ligand (RANKL) induced osteoclastic differentiation from RAW264.7macrophage cells. Tartrate-resistant acid phosphatase (TRAP) staining demonstrated that differentiation of osteoclast-like cells was inhibited in the presence of betulinic acid in a dose-dependent manner.
    Treatment of RAW264.7 macrophages with RANKL induced extracellular signal-regulated kinases (ERK), p38 and c-Jun N-terminal kinase (JNK) phosphorylation. We found RANKL-induced ERK, p38 and JNK was attenuated by betulinic acid. Our data suggest that betulinic acid inhibits osteoclastogenesis from macrophage cells via attenuated of RANKL-induced ERK, p38 and JNK activation, which may protect bone loss from osteoclastogenesis.
    显示于类别:[醫學檢驗生物技術學系暨碩士班 ] 博碩士論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML91检视/开启


    在CMUR中所有的数据项都受到原著作权保护.

    TAIR相关文章

     


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈