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二苯乙烯苷对APP/PS1/Tau三转基因痴呆小鼠JNK和PP2B的调

        控作用研究             Δ


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        吴文雪 ,苏彦兆 ,刘超宇 ,谭俊杰 ,李振中 ,黄 健 ,朱晓莹 ,廖艳花 ,黄忠仕 (1.右江民族医学院基础医
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        学院,广西 百色 533000;2.广西中医药大学药学院,南宁 530200;3.右江民族医学院药学院,广西 百色
        533000;4.右江民族医学院临床医学院,广西 百色 533000)
        中图分类号 R285.5         文献标志码 A           文章编号 1001-0408(2020)19-2339-07
        DOI  10.6039/j.issn.1001-0408.2020.19.07
        摘  要   目的:研究二苯乙烯苷(TSG)对APP/PS1/Tau三转基因痴呆(3×Tg-AD)小鼠c-Jun氨基末端激酶(JNK)、钙调神经磷酸酶
       (PP2B)的调控作用,探索该药抗阿尔茨海默病(AD)的可能机制。方法:将45只雄性3×Tg-AD小鼠随机分为模型组、阳性对照组
       (石杉碱甲,0.15 mg/kg)和 TSG 低、中、高剂量组(0.033、0.1、0.3 g/kg),每组 9 只;另取 9 只正常雄性 C57BL/6J 小鼠作为正常对照
        组。各给药组小鼠灌胃相应药物,每天给药1次,连续给药 60 d;正常对照组和模型组小鼠灌胃等量生理盐水。给药结束后,通过
        Morris水迷宫实验测定各组小鼠的空间学习记忆能力,采用尼氏染色法观察小鼠大脑皮层和海马部位尼氏小体变化情况,并分别
        采用实时荧光定量-聚合酶链式反应法和Western blotting法检测小鼠脑组织中JNK、PP2B的mRNA及蛋白表达情况。结果:与正
        常对照组比较,模型组小鼠逃避潜伏期显著延长(P<0.01),原平台象限停留时间显著缩短(P<0.01),穿越平台次数显著减少
       (P<0.01);脑皮层和海马部位尼氏小体数量显著减少、着色浅;脑组织中JNK mRNA及其蛋白的相对表达量显著升高(P<0.01),
        PP2B mRNA及其蛋白的相对表达量显著降低(P<0.01)。与模型组比较,阳性对照组和TSG各剂量组小鼠逃避潜伏期显著缩短
       (P<0.01),原平台象限停留时间显著延长(P<0.01);穿越平台次数显著增加(P<0.01);脑皮质和海马部位尼氏小体数量显著增
        加、着色深;脑组织中JNK蛋白的相对表达量显著降低(P<0.05或P<0.01),PP2B mRNA及其蛋白的相对表达量显著升高(P<
        0.01),且TSG高剂量组小鼠脑组织中JNK mRNA的相对表达量显著降低(P<0.05)。结论:TSG对3×Tg-AD小鼠的学习记忆能
        力及神经元损伤有一定改善作用,其机制可能与下调蛋白激酶JNK的转录和表达、上调蛋白磷酸酶PP2B的转录和表达有关。
        关键词 阿尔茨海默病;二苯乙烯苷;APP/PS1/Tau三转基因痴呆小鼠;c-Jun氨基末端激酶;钙调神经磷酸酶

        Regulatory Effects of Stilbene Glucoside on JNK and PP2B in APP/PS1/Tau Transgenic Dementia Mice
        WU Wenxue ,SU Yanzhao ,LIU Chaoyu ,TAN Junjie ,LI Zhenzhong ,HUANG Jian ,ZHU Xiaoying ,LIAO
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        Yanhua ,HUANG Zhongshi (1. School of Basic Medicine,Youjiang Medical University for Nationalities,
        Guangxi Baise 533000,China;2. School of Pharmacy,Guangxi University of TCM,Nanning 530200,China;
        3. School of Pharmacy, Youjiang Medical University for Nationalities, Guangxi Baise 533000, China;
        4. School of Clinical Medicine,Youjiang Medical University for Nationalities,Guangxi Baise 533000,China)
        ABSTRACT    OBJECTIVE:To study the regulatory effects of stilbene glucoside(TSG)on c-Jun N-terminal kinase(JNK)and
        protein phosphortase 2B(PP2B)in APP/PS1/Tau transgenic dementia(3×Tg-AD)mice,and to explore its potential mechanism of
        anti-Alzheimer’s disease(AD). METHODS:Totally 45 male 3×Tg-AD mice were randomly divided into model group,positive
        control group(huperzine A,0.15 mg/kg),TSG low-dose,medium-dose and high-dose groups(0.033,0.1,0.3 g/kg),with 9
        mice in each group. Another 9 normal male C57BL/6J mice were included into normal control group. Administration groups were
        given relevant medicine intragastrically,once a day,for consecutive 60 d. Normal control group and model group were given
        constant volume of normal saline intragastrically. After medication,Morris water maze experiment was used to test the spatial
        learning and memory ability of mice in each group;Nissl staining was used to observe the changes of Nissl bodies in cerebral
        cortex and hippocampus;mRNA and protein expressions of JNK and PP2B were detected by qRT-PCR and Western blotting assay.
        RESULTS:Compared with normal control group,the escape latency was significantly prolonged(P<0.01),the retention time of
                                                           the original platform quadrant was significantly shortened(P<
           Δ 基金项目:国家自然科学基金资助项目(No.81860709);广西自
                                                           0.01),and the times of crossing the platform was significantly
        然科学基金资助项目(No.2018GXNSFAA294153);广西壮族自治区研
                                                           reduced in model group (P<0.01); the number of Nissl
        究生教育创新计划项目(No.YCSW2020231)
                                                           bodies in cerebral cortex and hippocampus was significantly
           *硕士研究生。研究方向:老年性痴呆基础研究。E-mail:
        729011126@qq.com                                   reduced,the staining was slight;the relative expressions of
           # 通信作者:教授,硕士生导师,博士。研究方向:老年性痴呆基                  JNK mRNA and protein were significantly increased (P<
        础研究。E-mail:hzs1004@163.com                         0.01), and the relative expressions of PP2B mRNA and


        中国药房    2020年第31卷第19期                                             China Pharmacy 2020 Vol. 31 No. 19  ·2339 ·
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