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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 ·