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益肾达络饮缓解EAE模型小鼠神经系统炎症的机制研究                                                              Δ



          王 响 ,王诗洋,吴 元,丁文婧,谢名宗,何静文,邢天野,尚晓玲(长春中医药大学基础医学院,长春
                *
                                                                          #
          130117)

          中图分类号  R285.5      文献标志码  A      文章编号  1001-0408(2023)11-1326-06
          DOI  10.6039/j.issn.1001-0408.2023.11.08


          摘   要  目的  研究益肾达络饮抑制β-制动蛋白1(β-arrestin1)表达对实验性自身免疫性脑脊髓炎(EAE)模型小鼠炎症因子、环磷
          酸腺苷(cAMP)/蛋白激酶A(PKA)/ cAMP反应元件结合蛋白(CREB)信号通路的影响,探讨益肾达络饮治疗EAE的机制。方法
          采用随机数字表法将60只小鼠分为正常组、模型组、中药组(益肾达络饮20 g/kg)、阳性对照组(醋酸泼尼松3.9 mg/kg)、β-arrestin1
          siRNA腺相关病毒(AAV-β)组、AAV-β+中药组,每组10只。除正常组外,其余各组小鼠均制备EAE模型。AAV-β组、AAV-β+中药
          组小鼠通过尾静脉注射AAV-β干扰β-arrestin1蛋白的表达。造模第8天开始每天灌胃相应药液/生理盐水1次,连续14 d。检测小
          鼠神经功能评分,观察小鼠脑和脊髓组织的病理形态学变化,检测小鼠血清中炎症因子[白细胞介素 2(IL-2)、IL-23、γ 干扰素
         (IFN-γ)]水平,检测小鼠脑和脊髓组织中β-arrestin1、cAMP、PKA、CREB蛋白表达水平。结果  与正常组比较,模型组小鼠神经功
          能评分、血清中炎症因子水平以及脑、脊髓组织中 β-arrestin1 蛋白表达水平均显著升高(P<0.05 或 P<0.01);脑和脊髓组织中
          PKA、CREB、cAMP蛋白表达水平均显著降低(P<0.05或P<0.01);脑和脊髓组织中大部分神经元可见胞体皱缩深染及炎症细胞
          聚集现象,且存在不同程度的脱髓鞘改变。与模型组比较,各给药组小鼠神经功能评分、脑和脊髓组织的病理形态学变化及大部
          分指标(除AAV-β组脑组织中的CREB、cAMP蛋白外)均显著逆转(P<0.05或P<0.01)。与AAV-β组比较,AAV-β+中药组小鼠神
          经功能评分、血清中 IFN-γ 水平、脊髓中 β-arrestin1 蛋白表达水平均显著降低(P<0.05 或 P<0.01),脑与脊髓组织中 PKA、cAMP
          蛋白表达水平显著升高(P<0.05 或 P<0.01)。结论  益肾达络饮可能是通过抑制中枢神经系统中 β-arrestin1 的表达,进而激活
          cAMP/PKA/CREB信号通路,减轻神经系统炎症,最终缓解EAE的症状。
          关键词  益肾达络饮;实验性自身免疫性脑脊髓炎;β-制动蛋白1;蛋白激酶A;cAMP反应元件结合蛋白;炎症因子

          Study  on  the  mechanism  of  Yishen  daluo  decoction  in  alleviating  nervous  system  inflammation  in  EAE
          model mice
          WANG Xiang,WANG Shiyang,WU Yuan,DING Wenjing,XIE Mingzong,HE Jingwen,XING Tianye,SHANG
          Xiaoling(School of Basic Medicine, Changchun University of Chinese Medicine, Changchun 130117, China)

          ABSTRACT    OBJECTIVE  To  study  the  effects  of  Yishen  daluo  decoction  on  inflammatory  factors  and  cyclic  adenosine
          monophosphate(cAMP)/protein  kinase A (PKA)/cAMP  response  element  binding  protein (CREB)  signal  pathway  in  experimental
          autoimmune  encephalomyelitis (EAE)  model  mice  by  inhibiting  the  expressions  of  β-arrestin1,  and  to  explore  the  mechanism  of
          Yishen daluo decoction in the treatment of EAE. METHODS Sixty mice were randomly divided into normal group, model group,
          TCM  group (Yishen  daluo  decoction  20  g/kg),  positive  control  group (prednisone  acetate  3.9  mg/kg),  β-arrestin1  siRNA  adeno-
          associated  virus (AAV-β)  group,  AAV-β+TCM  group,  with  10  mice  in  each  group.  Except  for  normal  group,  EAE  model  was
          made in other groups. AAV-β group and AAV-β+TCM group were injected with AAV-β via tail vein to interfere with the expression
          of  β -arrestin1  protein.  Starting  from  the  8th  day  of  modeling,  they  were  given  corresponding  drug  solution/normal  saline
          intragastrically,  once  a  day,  for  consecutive  14  days.  The  neurological  function  score  of  mice  was  detected;  the  pathological  and
          morphological  changes  were  observed  in  the  brain  and  spinal  cord  tissues  of  mice;  the  serum  levels  of  inflammatory  factors
          [interleukin-2 (IL-2),  IL-23,  interferon-γ (IFN-γ)]  in  mice  were  determined;  the  expressions  of  β-arrestin1,  cAMP,  PKA  and
          CREB in brain and spinal cord were detected. RESULTS Compared with normal group, neurological function scores, serum levels
          of inflammatory factors, and protein expressions of β-arrestin1 in brain and spinal cord were significantly increased (P<0.05 or P<
          0.01); protein expressions of PKA, CREB and cAMP in brain and spinal cord were decreased significantly(P<0.05 or P<0.01).
          The deep staining of cellular shrinkage and aggregation of inflammatory cells were observed in most neurons of the brain and spinal
          cord,  with  varying  degrees  of  demyelinating.  Compared  with  model  group,  the  neurological  function  scores,  pathological  changes
                                                              in  brain  and  spinal  cord  tissues,  and  most  indicators (except
                                                              for  CREB  and  cAMP  proteins  in  the  brain  tissue  of  AAV- β
              Δ 基金项目 国家自然科学基金资助项目(No.81873216)
                                                              group)  were  significantly  reversed  (P<0.05  or  P<0.01).
             *第一作者 博士研究生。研究方向:中医药治疗神经免疫疾病。
          电话:0431-86172310。E-mail:974950869@qq.com            Compared  with  AAV- β  group,  the  neurological  function
              # 通信作者 教授,博士生导师,博士。研究方向:中医药治疗神经                 scores,  the  levels  of  IFN-γ  in  serum  and  β-arrestin1  in  spinal
          免疫疾病。电话:0431-86172310。E-mail:xiaolingshang@sina.com  cord were significantly decreased (P<0.05 or P<0.01), PKA


          · 1326 ·    China Pharmacy  2023 Vol. 34  No. 11                            中国药房  2023年第34卷第11期
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