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穿心莲内酯调节Nrg-1/ErbB4信号通路对缺血性脑卒中大鼠神经

          元凋亡的影响
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          邓 敏 ,禹 红 ,周 祥 ,孙海东 (1.武汉市中医医院检验科,武汉 430000;2.武汉市中医医院脑病科,
                 1*
                           1
                                            2 #
          武汉 430000)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)21-2634-06
          DOI  10.6039/j.issn.1001-0408.2024.21.10

          摘   要  目的  探讨穿心莲内酯(Andro)调节神经调节蛋白1(Nrg-1)/表皮生长因子受体4(ErbB4)信号通路对缺血性脑卒中(IS)
          大鼠神经元凋亡的影响。方法  采用线栓法建立 IS 大鼠模型。将 60 只造模成功的大鼠随机分为模型组(Model 组,生理盐水)、
          Andro 低剂量组(Andro-L 组,50 mg/kg)、Andro 高剂量组(Andro-H 组,100 mg/kg)和 Andro-H+Dacomitinib 组(100 mg/kg Andro+
          7.5 mg/kg Nrg-1/ErbB4信号通路抑制剂Dacomitinib),每组15只;另取15只大鼠为Sham组(生理盐水)。灌胃给药/生理盐水,每
          天1次,连续7 d。给药结束后,评估大鼠神经功能;检测大鼠血清中乳酸脱氢酶(LDH)、肿瘤坏死因子α(TNF-α)、白细胞介素1β
         (IL-1β)、IL-10、神经生长因子(NGF)水平;测定大鼠脑梗死面积;观察大鼠海马组织病理变化;检测大鼠海马神经元凋亡率和海
          马组织中丙二醛(MDA)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)水平及基质金属蛋白酶 9(MMP-9)、剪切型胱天蛋白酶 3
         (cleaved-caspase-3)、Nrg-1 蛋白表达水平和磷酸化 ErbB4(p-ErbB4)/ErbB4 比值。结果  与 Model 组比较,Andro-L 组、Andro-H 组
          大鼠Zea-Longa评分,逃避潜伏期,血清中LDH、TNF-α、IL-1β水平,脑梗死面积百分比,海马神经元凋亡率,海马组织中MDA水
          平和MMP-9、cleaved-caspase-3蛋白表达水平均显著降低/缩短(P<0.05);滞留时间、穿越平台次数,血清中IL-10、NGF水平,海马
          组织中CAT、SOD水平和Nrg-1蛋白表达水平、p-ErbB4/ErbB4比值均显著延长/增加/升高(P<0.05);海马神经组织结构损伤程度
          明显降低。Dacomitinib可减弱高剂量Andro对IS大鼠神经元损伤的改善作用(P<0.05)。结论  Andro可减轻IS大鼠炎症反应、
          氧化应激和海马组织损伤,改善神经功能;其作用机制可能与激活Nrg-1/ErbB4信号通路有关。
          关键词  穿心莲内酯;缺血性脑卒中;Nrg-1/ErbB4信号通路;神经元凋亡;神经功能

          Effect  of  andrographolide  on  neuronal  apoptosis  in  ischemic  stroke  rats  by  regulating  Nrg-1/ErbB4
          signaling pathway
          DENG Min ,YU Hong ,ZHOU Xiang ,SUN Haidong(1.  Dept.  of  Clinical  Laboratory,  Wuhan  Hospital  of
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          Traditional  Chinese  Medicine,  Wuhan  430000,  China;2.  Dept.  of  Encephalopathy,  Wuhan  Hospital  of
          Traditional Chinese Medicine, Wuhan 430000, China)
          ABSTRACT    OBJECTIVE  To  investigate  the  effect  of  andrographolide (Andro)  on  the  neuronal  apoptosis  in  ischemic  stroke
         (IS) rats by regulating the neuregulin-1 (Nrg-1)/epithelial growth factor receptor 4 (ErbB4) signaling pathway. METHODS The IS
          rat  model  was  established  using  the  suture  method.  Sixty  successfully  modeled  rats  were  randomly  divided  into  model  group
         (physiological saline), Andro low-dose group (Andro-L group, 50 mg/kg), Andro high-dose group (Andro-H group, 100 mg/kg),
          and Andro-H+Dacomitinib group (100 mg/kg of Andro+7.5 mg/kg of Nrg-1/ErbB4 signaling pathway inhibitor Dacomitinib), with
          15  rats  in  each  group.  Another  15  rats  were  chosen  as  the  sham  group (physiological  saline).  The  rats  were  intragastrically
          administered  medication/physiological  saline  once  a  day  for  7  consecutive  days. After  medication,  the  neurological  function  of  the
          rats was assessed; the levels of lactate dehydrogenase (LDH), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), IL-10,
          and nerve growth factor (NGF) in the rat serum were detected; the infarct area of the rat brain was measured, and the pathological
          changes in the hippocampal tissue of the rats were observed. Moreover, the apoptosis rate of hippocampal neurons and the levels of
          malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), matrix metalloproteinase-9 (MMP-9), cleaved-caspase-
          3, Nrg-1 protein expressions and phosphorylated ErbB4 (p-ErbB4)/ErbB4 ratio in the hippocampal tissue were detected. RESULTS
          Compared with the model group, the Zea-Longa score, the escape latency, the serum LDH, TNF-α, IL-1β levels, the percentage
          of  cerebral  infarction  area,  the  hippocampal  neuron  apoptosis  rate,  the  MDA  level  and  MMP-9,  cleaved-caspase-3  protein
          expression  levels  in  the  hippocampal  tissue  in  the  Andro-L  and  Andro-H  groups  were  significantly  reduced/shortened (P<0.05).
          The  dwelling  time,  the  number  of  platform  crossings,  the  serum  IL-10,  NGF  levels,  the  CAT,  SOD  levels,  the  Nrg-1  protein
                                                              expression  level  and  p-ErbB4/ErbB4  ratio  in  the  hippocampal
              Δ 基金项目 武汉市中医药科研项目(No.WZ22C67)                   tissue  were  significantly  extended/increased (P<0.05);  the
             *第一作者 主管技师。研究方向:免疫学检验的临床应用。                      degree  of  hippocampal  neural  tissue  damage  was  significantly
          E-mail:lrxxl3@163.com                               reduced.   Dacomitinib   could   significantly   weaken   the
              # 通信作者 主治医师。研究方向:针灸及中药治疗脑血管疾病及                  improvement  effect  of  high-dose  Andro  on  neuronal  injury  in
          神经系统疾病。E-mail:dl5vi6b@163.com                       IS  rats (P<0.05).  CONCLUSIONS  Andro  can  reduce  the


          · 2634 ·    China Pharmacy  2024 Vol. 35  No. 21                            中国药房  2024年第35卷第21期
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