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基于GABA能神经系统探究淫羊藿次苷Ⅱ的抗抑郁作用及机制
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          熊庭旺 ,张 珏 ,孙成新 ,尹彩霞 ,陈 犀 ,陈发菊 (1. 遵义医药高等专科学校科研处,贵州 遵义
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          563006;2.遵义医药高等专科学校药学系,贵州 遵义 563006;3.遵义医科大学药学院,贵州 遵义 563006;
          4.贵州省中国科学院天然产物化学重点实验室,贵阳 550014)
          中图分类号  R965;R285.5      文献标志码  A      文章编号  1001-0408(2024)02-0145-05
          DOI  10.6039/j.issn.1001-0408.2024.02.04

          摘  要  目的  基于γ氨基丁酸(GABA)能神经系统研究淫羊藿次苷Ⅱ(ICSⅡ)的抗抑郁作用及潜在机制。方法  将雄性昆明小
          鼠分为对照组(C组,10只)和造模组(50只),造模组小鼠以慢性不可预知温和应激法复制抑郁模型。刺激21 d后,将造模组小鼠
          随机分为抑郁模型组(NS 组)、阳性对照药组[ECS 组,草酸艾司西酞普兰 15 mg/(kg·d)]和 ICSⅡ低、中、高剂量组[ICSⅡ-L、ICS
          Ⅱ-M、ICSⅡ-H组,ICSⅡ 10、20、30 mg/(kg·d)],每组10只。各药物组小鼠灌胃相应药物,每天1次,连续14 d。检测各组小鼠的
          糖水偏爱率、运动总距离、悬尾实验和强迫游泳实验的静止不动时间,观察其海马CA3区神经元及尼氏体形态,检测海马组织中
          GABA、谷氨酸(Glu)含量、GABA/Glu比值及GABA能神经系统相关蛋白(GABA A受体α1、GABA B受体1、GABA囊泡转运体、
          谷氨酸脱羧酶67、GABA膜转运体3)的表达情况。结果  与C组比较,NS组小鼠糖水偏爱率显著降低,运动总距离显著缩短,悬尾
          实验和强迫游泳实验的静止不动时间均显著延长(P<0.05);海马CA3区的神经元形态不规则且尼氏体减少,结构完整的神经元
          数量显著减少(P<0.05);海马组织中Glu含量显著升高,GABA含量、GABA/Glu比值和GABA能神经系统相关蛋白表达水平均
          显著降低(P<0.05)。与NS组比较,各药物组大鼠的抑郁样行为均有所改善,上述指标普遍逆转(P<0.05)。结论  ICSⅡ能够改
          善抑郁模型小鼠的抑郁样行为,其机制可能与调节GABA、Glu平衡,增加GABA的合成、转运、释放以及调节相关受体的表达进
          而改善GABA能神经系统功能有关。
          关键词  淫羊藿次苷Ⅱ;抑郁;慢性不可预知温和应激;γ氨基丁酸能神经系统

          Exploration of antidepressant effect and mechanism of icariside Ⅱ based on GABAergic nervous system
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          XIONG Tingwang ,ZHANG Jue ,SUN Chengxin ,YIN Caixia ,CHEN Xi ,CHEN Faju(1.  Scientific  Research
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          Department, Zunyi Medical and Pharmaceutical College, Guizhou Zunyi 563006, China;2. Dept. of Pharmacy,
          Zunyi  Medical  and  Pharmaceutical  College,  Guizhou  Zunyi  563006,  China;3.  College  of  Pharmacy,  Zunyi
          Medical  University,  Guizhou  Zunyi  563006,  China;4.  Guizhou  Province  Key  Laboratory  of  Chemistry  for
          Natural Products, Chinese Academy of Sciences, Guiyang 550014, China)
          ABSTRACT   OBJECTIVE  To  explore  the  antidepressant  effect  and  potential  mechanism  of  icariside  Ⅱ (ICSⅡ)  based  on  the
          GABAergic nervous system. METHODS The male Kunming mice were randomly divided into a control group (group C, 10 mice)
          and a modeling group (50 mice). The depression model was induced by chronic unpredictable mild stress (CUMS) method in the
          modeling group. After 21 days of stimulation, the rats of modeling group were randomly divided into depression model group (NS
          group), positive control group [ECS group, oxalate escitalopram 15 mg/(kg·d)] and ICSⅡ low-dose, medium-dose and high-dose
          groups  [ICS Ⅱ -L  group,  ICS Ⅱ -M  group,  ICS Ⅱ -H  group;  ICS Ⅱ  10,  20,  30  mg/(kg·d)],  with  10  mice  in  each  group.
          Administration  groups  were  given  relevant  medicine  intragastrically,  once  a  day,  for  14  consecutive  days.  The  sugar  water
          preference rate, total exercise distance, immobility time in tail suspension and forced swimming experiments were detected in each
          group. The morphology of neurons and Nissl bodies in the hippocampal CA3 region were observed; the contents of γ-aminobutyric
          acid (GABA)  and  glutamic  acid (Glu),  GABA/Glu  ratio,  and  the  expressions  of  GABAergic  nervous  system-related  proteins
         (GABA  A  receptor  α1,  GABA  B  receptor  1,  vesicular  GABA  transporter,  glutamate  decarboxylase  67,  GABA  membranal
          transporter  3)  were  detected  in  hippocampus.  RESULTS  Compared  with  group  C,  the  sugar  water  preference  rate  and  the  total
          exercise  distance  significantly  reduced  in  NS  group,  while  the  values  of  immobility  time  in  the  tail  suspension  test  and  forced
          swimming  test  were  significantly  prolonged (P<0.05).  The  morphology  of  neurons  in  the  CA3  area  of  the  hippocampus  was
                                                             irregular  and  the  Nissl  bodies  were  reduced,  with  a  significant
             Δ 基金项目 国家自然科学基金项目(No.31960204);遵义市科技
                                                             decrease  in  the  number  of  structurally  intact  neurons (P<
          计划项目[No. 遵市科合 HZ 字(2021)221 号,遵市科合 HZ 字(2021)
                                                             0.05);  the  content  of  Glu  was  significantly  increased,  while
          214号,遵市科合HZ字(2022)159号]
             *第一作者 助教,硕士。研究方向:中药/天然药物抗焦虑/抑郁。                 the  content  of  GABA,  GABA/Glu  ratio,  and  the  expressions
          E-mail:1425730404@qq.com                           of  GABAergic  nervous  system-related  proteins  were  significantly
             # 通信作者 副教授,硕士。研究方向:天然植物精油功效研究与                  decreased (P<0.05).  Compared  with  NS  group,  depression
          产品研发。E-mail:747501941@qq.com                       behavior  in  each  administration  group  was  improved,  and  the


          中国药房  2024年第35卷第2期                                                 China Pharmacy  2024 Vol. 35  No. 2    · 145 ·
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