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·药学研究·


          毛蕊异黄酮对脑出血后继发急性炎症损伤的改善作用及机制
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          柳晓蕊 ,许智朝 ,王兆涛 ,张媚媚 ,简晓顺 ,彭怀东 (1.广州医科大学附属肿瘤医院药学部,广州 510095;
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          2.广州医科大学附属第二医院神经外科,广州 510260;3.广州医科大学附属第二医院药学部,广州 510260)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)16-1936-07
          DOI  10.6039/j.issn.1001-0408.2023.16.04
          摘   要  目的  探讨毛蕊异黄酮(CA)对脑出血后继发急性炎症损伤的改善作用及机制。方法  以雄性C57BL/6小鼠为对象,通过
          基底节注射Ⅶ型胶原酶构建脑出血模型,分为假手术组(以磷酸盐缓冲液代替胶原酶)、模型组、不同剂量(15、30、60、120 mg/kg)CA
          组。在以改良神经功能缺损程度(mNSS)评分筛选干预剂量的基础上,检测各组小鼠的脑出血体积、脑含水量,脑组织中离子钙结
          合衔接分子1(Iba1)和脑组织中Toll样受体4(TLR4)及其下游炎症因子[肿瘤坏死因子α(TNF-α)、诱导型一氧化氮合酶(iNOS)、
          白细胞介素1β(IL-1β)]的表达情况,以及脑组织中细胞的凋亡情况。体外培养原代小胶质细胞,检测其中TLR4及其下游炎症因
          子的表达情况;体外共培养原代神经元与原代小胶质细胞,检测其中神经元的凋亡情况。结果  选取30、60 mg/kg作为CA的干预
          剂量进行后续实验。与假手术组比较,模型组小鼠出现了脑出血现象,脑出血体积和脑含水量均显著升高(P<0.05),脑组织中
          Iba1蛋白的表达阳性率显著升高,脑组织中TLR4、TNF-α、IL-1β、iNOS蛋白的相对表达水平均显著上调,细胞凋亡率亦显著增加
         (P<0.05);与模型组比较,30、60 mg/kg CA组小鼠上述指标均显著改善(P<0.05)。CA显著降低了原代小胶质细胞中TLR4及其
          下游炎症因子的相对表达水平,显著减少了原代神经元与原代小胶质细胞共培养体系中神经元的凋亡(P<0.05)。结论  CA可发
          挥脑保护作用,可能与抑制TLR4介导的炎症反应而减轻脑出血后继发的急性炎症损伤有关。
          关键词  毛蕊异黄酮;脑出血;继发急性炎症损伤;Toll样受体4;小胶质细胞

          Improvement  effect  and  mechanism  of  calycosin  on  acute  inflammatory  injury  secondary  to  intracerebral
          hemorrhage
          LIU Xiaorui ,XU Zhichao ,WANG Zhaotao ,ZHANG Meimei ,JIAN Xiaoshun ,PENG Huaidong(1.  Dept.  of
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          Pharmacy,  the Affiliated  Cancer  Hospital  and  Institute  of  Guangzhou  Medical  University,  Guangzhou  510095,
          China;2.  Dept.  of  Neurosurgery,  the  Second Affiliated  Hospital  of  Guangzhou  Medical  University,  Guangzhou
          510260,  China;3.  Dept.  of  Pharmacy,  the  Second  Affiliated  Hospital  of  Guangzhou  Medical  University,
          Guangzhou 510260, China)
          ABSTRACT    OBJECTIVE  To  investigate  the  improvement  effect  and  mechanism  of  calycosin (CA)  on  acute  inflammatory
          injury  secondary  to  intracerebral  hemorrhage.  METHODS  Male  C57BL/6  mice  were  injected  with  type  Ⅶ  collagenase  into  the
          basal  ganglia  to  establish  an  intracerebral  hemorrhage  model,  which  were  divided  into  sham-operation  group(phosphate  buffered
          saline  instead  of  collagenase),  model  group,  and  different  CA  dose  groups(15,30,60,120  mg/kg).  Based  on  the  modified
          neurological severity score (mNSS) to screen the intervention doses, the volume of intracerebral hemorrhage, brain water content,
          the  expressions  of  ionized  calcium-binding  adaptor  molecule  1 (Iba1)  in  brain  tissue,  Toll-like  receptor  4 (TLR4)  and  its
          downstream  inflammatory  factors  [tumor  necrosis  factor-α (TNF-α),  inducible  nitric-oxide  synthase (iNOS),  interleukin-1β (IL-
          1β)]  in  brain  tissue,  and  the  apoptosis  of  cells  in  brain  tissue  were  detected.  Primary  microglia  were  cultured  in  vitro,  and  the
          expressions  of  TLR4  and  its  downstream  inflammatory  factors  were  detected.  Primary  neurons  and  primary  microglia  were  co-
          cultured  in  vitro,  and  the  apoptosis  of  neurons  was  detected.  RESULTS  The  doses  of  30  mg/kg  and  60  mg/kg  were  selected  as
          intervention  doses  of  CA  for  subsequent  experiments.  Compared  with  the  sham-operation  group,  the  mice  in  the  model  group  had
          cerebral  hemorrhage,  the  volume  of  cerebral  hemorrhage  and  brain  water  content  were  significantly  increased (P<0.05);  the
                                                              positive  expression  rate  of  Iba1  protein  in  brain  tissue  was
              Δ 基金项目 国家自然科学基金资助项目(No.81901117);广东省
                                                              significantly  increased,  and  the  relative  expression  levels  of
          自然科学基金面上项目(No.2019A1515010926);广东省医学科学技术
                                                              TLR4,  TNF-α,  IL-1β  and  iNOS  protein  in  brain  tissue  were
          研 究 基 金 项 目(No. A2022306);广 州 市 卫 生 健 康 科 技 项 目(No.
                                                              up-regulated  significantly.  The  apoptosis  rate  also  increased
          20221A011098)
             *第一作者 主管药师,硕士。研究方向:小分子化合物抗炎、抗肿                   significantly (P<0.05).  Compared  with  model  group,  the
          瘤。电话:020-66673666。E-mail:climbmm@163.com            above  indexes  of  the  mice  in  the  30  and  60  mg/kg  CA  groups
              # 通信作者 主管药师,硕士。研究方向:临床药学及小分子化合                  were  significantly  improved  (P<0.05).  CA  significantly
          物抗炎、抗肿瘤。电话:020-34152376。E-mail:phdloveyou@163.com   reduced  the  relative  expression  levels  of  TLR4  and  its


          · 1936 ·    China Pharmacy  2023 Vol. 34  No. 16                            中国药房  2023年第34卷第16期
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