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天麻活性成分减轻大鼠神经元氧糖剥夺/复糖复氧损伤的作用

          机制     Δ



          王 锦 ,夏霜莉 ,杨 媛 ,代 蓉 (1.云南中医药大学中药学院,昆明 650500;2.昆明医科大学第一附属医
                                          1 #
                                  2
                 1*
                          1
          院临床药学中心,昆明 650032)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2023)23-2886-05
          DOI  10.6039/j.issn.1001-0408.2023.23.12

          摘   要  目的  研究天麻活性成分3,4-二羟基苯甲醛(3,4-DD)对大鼠脑微血管内皮细胞(BMECs)-大鼠肾上腺嗜铬细胞PC12共
          培养体系氧糖剥夺/复糖复氧(OGD/R)损伤的改善作用机制。方法  采用Transwell小室共培养BMECs与PC12细胞,然后分为对
          照组、模型组、丁苯酞组(阳性对照组,0.1 mmol/L)、3,4-DD组(0.1 μmol/L),除对照组外,其余各组共培养体系均复制OGD/R损伤
          模型。同时,共培养体系以相应药物或培养基干预 BMECs 24 h,然后检测体系跨膜电阻(TEER)以及 PC12 细胞中乳酸脱氢酶
         (LDH)活性、脑源性神经营养因子(BDNF)水平以及TrkB、Plc-γ、Map-2、GAP-43 mRNA表达水平。结果  与对照组比较,模型组
          共培养体系TEER以及PC12细胞中LDH活性、BDNF水平均显著降低(P<0.01),PC12细胞中TrkB、Plc-γ、Map-2、GAP-43 mRNA
          表达水平均显著升高(P<0.01);与模型组比较,3,4-DD组、丁苯酞组共培养体系TEER以及PC12细胞中LDH活性、BDNF水平和
          TrkB、Plc-γ、Map-2、GAP-43 mRNA表达水平均显著升高(P<0.05或P<0.01)。结论  3,4-DD可通过作用于BMECs减轻神经元
          OGD/R损伤,其作用机制可能与激活BDNF/TrkB信号通路有关。
          关键词  3,4-二羟基苯甲醛;脑微血管内皮细胞;神经元;氧糖剥夺

          Mechanism  of  Gastrodia  elata  active  ingredient  reducing  oxygen-glucose  deprivation/reoxygenation  injury
          in rat neuron
          WANG Jin ,XIA Shuangli ,YANG Yuan ,DAI Rong(1.School  of  Chinese  Materia  Medica, Yunnan  University
                                  1
                                              2
                                                         1
                    1
          of  Chinese  Medicine,  Kunming  650500,  China;  2. Dept.  of  Clinical  Pharmacy,  First  Affiliated  Hospital  of
          Kunming Medical University, Kunming 650032, China)
          ABSTRACT    OBJECTIVE  To  study  the  improvement  effect  and  mechanism  of  Gastrodia  elata  active  ingredient  3,4-
          dihydroxybenzaldehyde (3,4-DD) on oxygen-glucose deprivation/reoxygenation(OGD/R) injury in rat primary brain microvascular
          endothelial cells (BMECs)-rat adrenal chromaffin cells PC12 co-culture system. METHODS  The co-culture model of BMECs and
          PC12  cells  was  replicated  in  the Transwell  chamber,  and  divided  into  control  group,  model  group,  butylphthalide  group (positive
          control group, 0.1 mmol/L) and 3,4-DD group (0.1 μmol/L). OGD/R injury model of the co-culture system was induced in those
          groups except for the control group. After preventively intervention in BMECs with relevant medicine or culture medium for 24 h,
          cell  transendothelial  electronic  resistance (TEER)  value,  lactate  dehydrogenase (LDH)  activity,  brain-derived  neurotrophic  factor
         (BDNF) level and mRNA expressions of TrkB, Plc-γ, Map-2, GAP-43 in PC12 cells was detected. RESULTS Compared with the
          control  group,  TEER  of  the  co-culture  model,  LDH  activity  and  BDNF  level  of  PC12  cells  were  decreased  significantly  in  the
          model group (P<0.01), while mRNA expressions of TrkB, Plc-γ, Map-2 and GAP-43 in PC12 cells were increased significantly
         (P<0.01).  Compared  with  the  model  group,  TEER  of  the  co-culture  model,  LDH  activity,  BDNF  level,  and  the  mRNA
          expressions of TrkB, Plc-γ, Map-2 and GAP-43 in PC12 cells were increased significantly in the 3,4-DD group and butylphthalide
          group (P<0.05  or  P<0.01).  CONCLUSIONS  3,4-DD  can  relieve  the  damage  of  neuronal  OGD/R  by  acting  on  BMECs,  the
          mechanism of which may be associated with activating the BDNF/TrkB signaling pathway.
          KEYWORDS     3,4-dihydroxybenzaldehyde; brain microvascular endothelial cells; neuron; oxygen and glucose deprivation



              Δ 基金项目 云南省教育厅科学研究基金项目(No.2023Y0457)                 神经血管单元(neurovascular unit,NVU)主要包括
             *第一作者 硕士研究生。研究方向:中药药理与应用。E-mail:
                                                              神经元、星形胶质细胞、小胶质细胞、脑微血管内皮细胞
          281824748@qq.com
                                                             (brain microvascular endothelial cells,BMECs)、细胞外
              # 通信作者 副教授,硕士生导师。研究方向:中药药理与应用。
          E-mail:1647029626@qq.com                            基质等,各组成间相互协调,共同维持脑组织内环境的


          · 2886 ·    China Pharmacy  2023 Vol. 34  No. 23                            中国药房  2023年第34卷第23期
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