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人参皂苷Rb3联合β-细辛醚对血管性痴呆模型小鼠的改善作用及

        其机制研究             Δ


        邓敏贞 ,钟晓琴 ,高志杰 ,孙一凡 ,黄丽平 (1.广州中医药大学第二附属医院/广东省中医院脑病一科,广州
                                1
                                        1
              1*
                                                2 #
                        1
        510120;2.岭南师范学院化学化工学院,广东 湛江 524048)
        中图分类号 R743.3;R285         文献标志码      A      文章编号     1001-0408(2020)16-1967-07
        DOI  10.6039/j.issn.1001-0408.2020.16.09
        摘  要   目的:研究人参皂苷Rb3联合β-细辛醚对血管性痴呆(VD)模型小鼠的改善作用及其机制。方法:将ICR小鼠随机分为模
        型组、人参皂苷Rb3组(10 mg/kg)、β-细辛醚组(10 mg/kg)、联合用药组(人参皂苷Rb3 10 mg/kg +β-细辛醚10 mg/kg)、阳性对照组
       (盐酸多奈哌齐1 mg/kg)和蛋白激酶B(Akt)抑制剂组(LY294002,1 mg/kg),并设假手术组,每组10只。除假手术组外,其余各组
        小鼠均按四血管阻断法复制VD模型。造模后,假手术组和模型组小鼠灌胃等体积生理盐水,Akt抑制剂组腹腔注射相应药物,其
        余各组均灌胃相应药物,每日2次,连续30 d。末次给药后,采用避暗实验检测各组小鼠的学习记忆能力,酶联免疫吸附测定法检
        测其海马组织中4-羟基壬烯酸(4-HNE)、8-羟基脱氧鸟苷(8-OHdG)、活性氧(ROS)含量,实时荧光定量聚合酶链式反应技术检测
        海马组织中B细胞淋巴瘤2(Bcl-2)及其X蛋白(Bax)mRNA的表达,免疫荧光法检测皮质中Bcl-2蛋白的表达,Western blotting法
        检测海马组织中Bcl-2、Bax蛋白的表达。结果:与假手术组比较,模型组小鼠的避暗潜伏期显著缩短,错误次数显著增多,4-HNE、
        8-OHdG、ROS含量以及Bax mRNA、蛋白的表达水平均显著升高,Bcl-2 mRNA、蛋白的表达水平均显著降低(P<0.01)。与模型
        组比较,人参皂苷 Rb3组、β-细辛醚组、联合用药组和阳性对照组小鼠的避暗潜伏期均显著延长,错误次数均显著减少,4-HNE、
        8-OHdG、ROS含量以及Bax mRNA、蛋白的表达水平均显著降低,Bcl-2 mRNA、蛋白的表达水平均显著升高,且联合用药组的效
        果最为显著(P<0.05或P<0.01);而Akt抑制剂组小鼠的避暗潜伏期显著缩短,错误次数显著增多,4-HNE、8-OHdG、ROS含量以
        及Bax mRNA、蛋白的表达水平均显著升高,Bcl-2 mRNA、蛋白的表达水平均显著降低(P<0.05)。结论:人参皂苷Rb3联合β-细辛
        醚对 VD 模型小鼠学习记忆能力具有一定改善作用,且效果优于各化合物单用。这种作用可能与抗氧化应激、抗海马组织凋亡
        有关。
        关键词 人参皂苷Rb3;β-细辛醚;血管性痴呆;氧化应激;凋亡;小鼠

        Study on the Improvement Effect of Ginsenoside Rb3 Combined with β-asarone on Vascular Dementia
        Model Mice and Its Mechanism
                                       1
                      1
                                                                1
        DENG Minzhen ,ZHONG Xiaoqin ,GAO Zhijie ,SUN Yifan ,HUANG Liping(1. The First Department of
                                                                                2
                                                    1
        Encephalopathy, the Second Affiliated Hospital of Guangzhou University of TCM/Guangdong Provincial
        Hospital of TCM,Guangzhou 510120,China;2. School of Chemistry and Chemical Engineering,Lingnan
        Normal University,Guangdong Zhanjiang 524048,China)
        ABSTRACT    OBJECTIVE:To study the improvement effects of ginsenoside Rb3 combined with β-asarone on vascular dementia
       (VD)model mice and its mechanism. METHODS:ICR mice were randomly divided into model group,ginsenoside Rb3 group(10
        mg/kg),β-asarone group(10 mg/kg),drug combination group(ginsenoside Rb3 10 mg/kg+β-asarone 10 mg/kg),positive control
        group(donepezil hydrochloride 1 mg/kg)and Akt inhibitor group(LY294002,1 mg/kg),and sham operation group was set up,
        with 10 mice in each group. Except for sham operation group,VD model was induced by four vessel occlusion method in other
        groups. After modeling,sham operation group and model group were given constant volume of normal saline,Akt inhibitor group
        was given relevant medicine intraperitoneally,and other groups were given relevant medicine intragastrically,twice a day,for
        consecutive 30 d. After last administration,the learning and memory ability of mice was detected by avoiding darkness test. The
        contents of 4-hydroxydecenoic acid (4-HNE),8-hydroxydeoxyguanosine (8-OHdG) and reactive oxygen species (ROS) in
                                                           hippocampus was detected by ELISA. RT-PCR assay was used
            Δ 基 金 项 目 :国 家 自 然 科 学 基 金 资 助 项 目(No.81904104,
                                                           to detect the mRNA expression of Bcl-2 and Bax in
        No.31900297);广东省自然科学基金——粤东西北创新人才联合培养
                                                           hippocampus. The protein expression of Bcl-2 in cortex was
        项 目(No.2018A030307037);广 东 省 中 医 药 局 科 研 基 金 项 目
                                                           detected by immunofluorescence method. Western blotting
       (No.20181114)
           *研究实习员,博士。研究方向:中医药治疗脑病。E-mail:deng-             assay was used to detect the protein expression of Bcl-2 and
        mz1@126.com                                        Bax in hippocampus. RESULTS: Compared with sham
           # 通信作者:副教授,博士。研究方向:中医药治疗脑病。E-mail:              operation group,the incubation period of avoiding darkness
        xiaoyinlanlp@126.com                               test in model group was shortened significantly; and the


        中国药房    2020年第31卷第16期                                            China Pharmacy 2020 Vol. 31 No. 16  ·1967 ·
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