三七皂苷Rg1对大鼠脑缺血再灌注损伤中BDNFmRNA含量的影响

被引:16
作者
杨克红
葛树星
许冰莹
闫俊岭
吴兰鸥
机构
[1] 昆明医学院药理学教研室
关键词
三七皂苷Rg1; 脑缺血再灌注损伤; BDNFmRNA; 实时定量RT-PCR;
D O I
10.13863/j.issn1001-4454.2007.03.024
中图分类号
R285.5 [中药实验药理];
学科分类号
摘要
目的:探讨三七皂苷Rg1对大鼠局灶性脑缺血再灌注损伤大脑组织中脑源性神经营养因子(brain-de-rived neurotroph ic factor,BDNF)mRNA表达的影响。方法:雄性SD大鼠36只,随机分为脑缺血再灌注模型组、药物治疗组(100 mg/kg)和阳性药物对照组(尼莫地平,1 mg/kg),采用线栓法制作大鼠局灶性脑缺血再灌注损伤模型,各组分别于术后1、3、5天随机取4只大鼠处死后取出脑组织。提取脑组织的总RNA,进行RT-PCR扩增BDNFmRNA特异性片段,构建重组质粒并测序。以倍比稀释后的重组质粒作为阳性标准模板,使用Taqm an探针法对BDNF mRNA进行实时定量PCR检测,分析各组大鼠脑组织中BDNF mRNA的变化。结果:与模型组及阳性对照组相比,三七皂苷Rg1组能明显改善脑缺血的神经缺失症状,并在各时间段均能上调脑缺血再灌注损伤大鼠的脑组织中BDNF mRNA的含量(P<0.05)。结论:三七皂苷Rg1通过上调大鼠脑缺血再灌注损伤时脑组织中BDNF mR-NA的含量,促进脑组织内BDNF蛋白的合成,BDNF与其特异性受体TrkB相结合,产生相应的效应分子而对缺血神经元起保护作用,从而发挥其对脑缺血损伤的治疗作用。
引用
收藏
页码:313 / 316
页数:4
相关论文
共 6 条
  • [1] Function and evolution in the family and itsreceptor. Ebendal T. Journal of Neuroscience Research . 1992
  • [2] BDNF up-regulatesTrkB protein and prevents the death of CALneurons follow-ing transient forebrain ischemia. Ferrer I,Ballabriga J,Marti E,et al. Brain Pathology . 1998
  • [3] Evidence thatbrain-derived neurotrophic factor neuroprotection is linkedto its ability to reverse the NMDA-induced inactivation ofprotein kinase C in cortical neurons. Tremblay R,Hewitt K,Lesiuk H,et al. Journal of Neurochemistry . 1999
  • [4] Reversiblemiddle cerebral artery occlusion without craniectomy in rat. Longa E Z,Weistein P R,Carlson S,et al. Stroke . 1989
  • [5] Structural and functional properties of the Trkfamily of neurotrophin receptors. Barbacid M. Annals of the New York Academy of Sciences . 1995
  • [6] Applica-tion of the 5′fluorogenic exonuclease assay(Taqman)forquantitative ribosomal DNA and rDNA analysis in sedi-ments. Stults JR,Snoeyenbos-West O,Methe B,et al. Applied and Environmental Microbiology . 2001