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1.中国中医科学院 中医基础理论研究所,北京 100700
2.河南中医药大学 中医学院,郑州 450046
3.宁夏回族自治区中医医院暨中医研究院,银川 750021
Published:05 November 2023,
Published Online:30 August 2023,
Received:28 June 2023,
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杨婧雯,梁文青,巩子汉等.逍遥散对LPS诱导抑郁样小鼠JNK通路的作用机制[J].中国实验方剂学杂志,2023,29(21):32-40.
YANG Jingwen,LIANG Wenqing,GONG Zihan,et al.Effect of Xiaoyaosan on JNK Pathway in LPS-induced Depressive-like Behavior in Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(21):32-40.
杨婧雯,梁文青,巩子汉等.逍遥散对LPS诱导抑郁样小鼠JNK通路的作用机制[J].中国实验方剂学杂志,2023,29(21):32-40. DOI: 10.13422/j.cnki.syfjx.20231137.
YANG Jingwen,LIANG Wenqing,GONG Zihan,et al.Effect of Xiaoyaosan on JNK Pathway in LPS-induced Depressive-like Behavior in Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(21):32-40. DOI: 10.13422/j.cnki.syfjx.20231137.
目的
2
基于c-Jun氨基末端激酶(JNK)通路探索逍遥散对脂多糖(LPS)诱导抑郁样小鼠的作用机制。
方法
2
适应性喂养后,将C57BL/6J小鼠随机分为正常组、模型组、米诺环素组(腹腔注射,50 mg·kg
-1
)、氟西汀组(灌胃,2.6 mg·kg
-1
)、逍遥散低、中、高剂量组(灌胃,6.012 5、12.025、24.050 g·kg
-1
),给药14 d后,模型组和各给药组腹腔注射2 mg·kg
-1
LPS,正常组腹腔注射等体积生理盐水。通过旷场、O迷宫实验检测小鼠抑郁样行为;高效液相色谱法(HPLC)检测小鼠海马去甲肾上腺素(NE)、肾上腺素(E)的含量。酶联免疫吸附测定法(ELISA)检测血清炎症因子白细胞介素-1
β
(IL-1
β
)含量;免疫组化检测离子钙接头蛋白-1(Iba-1)、原癌基因(c-Fos)、c-Jun蛋白表达水平;实时荧光定量聚合酶链式反应(Real-time PCR)检测小鼠海马IL-1
β
、c-Jun、c-Fos、JNK3 mRNA表达水平;全自动蛋白表达分析系统(Western)检测小鼠海马JNK、磷酸化(p)-JNK蛋白表达水平。
结果
2
与正常组比较,模型组小鼠中央区停留时间、穿越次数及运动距离显著减少(
P
<
0.01),血清IL-1
β
含量显著升高(
P
<
0.01),NE、E含量明显下降(
P
<
0.05),IL-1
β
、JNK3、c-Fos mRNA及Iba-1、c-Fos、c-Jun蛋白表达明显增多(
P
<
0.05,
P
<
0.01);与模型组比较,逍遥散组小鼠中央区及开放臂停留时间明显增加(
P
<
0.05),NE、E含量显著升高(
P
<
0.01),IL-1
β
、JNK3、c-Jun、c-Fos mRNA及Iba-1、c-Fos、JNK、p-JNK蛋白表达明显降低(
P
<
0.05,
P
<
0.01),米诺环素组及氟西汀组小鼠JNK3、c-Jun、c-Fos mRNA表达明显降低(
P
<
0.05,
P
<
0.01),米诺环素组小鼠血清IL-1
β
及p-JNK蛋白表达显著降低(
P
<
0.01),氟西汀组小鼠NE、E含量升高,c-Fos蛋白表达显著降低(
P
<
0.01)。
结论
2
逍遥散可改善LPS诱导的C57小鼠的抑郁样行为,其机制可能与抑制神经炎症反应及JNK通路有关。
Objective
2
To explore the mechanism of Xiaoyaosan in alleviating lipopolysaccharide (LPS)-induced depressive-like behavior in mice based on the c-Jun N-terminal kinase (JNK) pathway.
Method
2
After adaptive feeding, C57BL/6J mice were randomly divided into normal group, model group, minocycline group (intrabitoneal injection, 50 mg·kg
-1
), fluoxetine group (intragastric administration, 2.6 mg·kg
-1
), and low-, medium-, and high-dose Xiaoyaosan groups (intragastric administration,6.012 5, 12.025, and 24.050 g·kg
-1
). After 14 days of administration, the model group and each administration group were intraperitoneally injected with 2 mg·kg
-1
LPS, and the normal group was intraperitoneally injected with equal volume of normal saline. Depressive-like behavior in mice was assessed using the open field test and the elevated zero maze test. High-performance liquid chromatography (HPLC) was used to measure the levels of norepinephrine (NE) and epinephrine (E) in the mouse hippocampus. Enzyme-linked immunosorbent assay (ELISA) was performed to determine serum interleukin-1
β
(IL-1
β
) levels. Immunohistochemistry was used to measure the protein expression levels of ionized calcium-binding adapter molecule-1 (Iba-1), c-Fos, and c-Jun. Real-time polymerase chain reaction (Real-time PCR) was used to measure mRNA expression levels of IL-1
β
, c-Jun, c-Fos, and JNK3 in the mouse hippocampus. Protein expression levels of JNK and phosphorylated (p)-JNK in the mouse hippocampus were measured using capillary protein automated protein expression analysis system (Western).
Result
2
Compared with the normal group, the model group exhibited significantly reduced central area residence time, crossing times, and travel distance in the open field (
P
<
0.01), significantly increased serum IL-1
β
levels (
P
<
0.01), significantly decreased NE and E levels (
P
<
0.05), upregulated mRNA expression of IL-1
β
, JNK3, and c-Fos, and increased protein expression of Iba-1, c-Fos, and c-Jun (
P
<
0.05,
P
<
0.01). Compared with the model group, the Xiaoyaosan groups showed increased central area residence time and open arm residence time (
P
<
0.05), increased NE and E levels (
P
<
0.01), decreased mRNA expression of IL-1
β
, JNK3, c-Jun, and c-Fos, and decreased protein expression of Iba-1, c-Fos, JNK, and p-JNK (
P
<
0.05,
P
<
0.01). The minocycline group and the fluoxetine group showed decreased mRNA expression of JNK3, c-Jun, and c-Fos (
P
<
0.05,
P
<
0.01). The minocycline group showed decreased serum IL-1
β
and p-JNK protein expression (
P
<
0.01). The fluoxetine group exhibited increased NE and E levels and decreased c-Fos protein expression (
P
<
0.01).
Conclusion
2
Xiaoyaosan can improve depressive-like behavior induced by LPS in mice, and its mechanism may be related to the inhibition of neuroinflammatory responses and the JNK pathway.
脂多糖(LPS)逍遥散c-Jun氨基末端激酶(JNK)小鼠神经炎症
lipopolysaccharide (LPS)Xiaoyaosanc-Jun N-terminal kinase (JNK)miceneuroinflammation
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