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1.六安市中医院,安徽 六安 237000;
2.贵州中医药大学 第一附属医院,贵阳 550001
许露,硕士,住院医师,从事中西医妇科的研究,E-mail:1013231194@qq.com
李燕,博士,主任医师,教授,从事中医药对女性生殖轴调控机制的研究,E-mail:987570074@qq.com
收稿日期:2018-12-20,
网络出版日期:2019-05-08,
纸质出版日期:2019-08-05
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许露, 李燕, 张芳, 等. 逍遥散加减对高泌乳素血症模型大鼠中枢多巴胺受体ERK信号转导通路的影响[J]. 中国实验方剂学杂志, 2019,25(15):70-76.
Lu XU, Yan LI, Fang ZHANG, et al. Effect of Modified Xiaoyaosan on ERK Signal Transduction Pathway of Dopamine Receptorin Model Rats with Hyperprolactinemia[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(15): 70-76.
许露, 李燕, 张芳, 等. 逍遥散加减对高泌乳素血症模型大鼠中枢多巴胺受体ERK信号转导通路的影响[J]. 中国实验方剂学杂志, 2019,25(15):70-76. DOI: 10.13422/j.cnki.syfjx.20191640.
Lu XU, Yan LI, Fang ZHANG, et al. Effect of Modified Xiaoyaosan on ERK Signal Transduction Pathway of Dopamine Receptorin Model Rats with Hyperprolactinemia[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(15): 70-76. DOI: 10.13422/j.cnki.syfjx.20191640.
目的:
2
以疏肝健脾为核心,运用逍遥散加减治疗高泌乳素血症(HPRL)模型大鼠,探讨逍遥散加减对HPRL大鼠模型中枢多巴胺受体细胞外调节蛋白激酶(ERK)信号转导通路的作用机制。
方法:
2
96只SD雌性大鼠,随机分为正常组,模型组,溴隐亭组(0.001 g·kg
-1
),逍遥散加减高、中、低剂量组(60,30,15 g·kg
-1
),多巴胺第一受体(D1R)拮抗剂组(SCH23390组,SCH23390+逍遥散加减中剂量组,SCH23390+溴隐亭组),多巴胺第二受体(D2R)拮抗剂组(氟哌啶醇组,氟哌啶醇组+逍遥散加减中剂量组,氟哌啶醇组+溴隐亭组)。采用垂体移植法制作HPRL大鼠模型,给药30 d后,采用蛋白免疫印迹法(Western blot)检测大鼠下丘脑癌蛋白Ras,Raf蛋白的表达;采用实时荧光定量聚合酶链式反应(Real-time PCR)检测大鼠下丘脑丝裂原活化蛋白激酶(MAPK)激酶1/2(MEK1/2)mRNA,细胞外信号调节激酶1/2(ERK1/2)mRNA的表达;采用电镜观察卵巢颗粒细胞超微结构。
结果:
2
与正常组比较,模型组Ras,Raf蛋白,MEK1/2,ERK1/2 mRNA表达显著降低(
P
<
0.01);运用SCH23390拮抗DIR后,与模型组比较,SCH23390组Ras,Raf蛋白,MEK1/2,ERK1/2 mRNA表达有升高趋势,运用氟哌啶醇拮抗D2R后,与模型组比较,氟哌啶醇组Ras,Raf蛋白表达有下降趋势,MEK1/2,ERK1/2 mRNA表达显著下降(
P
<
0.01);运用逍遥散加减治疗后,能显著提高Ras,Raf蛋白,MEK1/2,ERK1/2 mRNA表达(
P
<
0.01),且逍遥散加减高、中剂量组表达增加最明显(
P
<
0.01),效果优于溴隐亭组。电镜下模型组卵巢颗粒细胞形态及线粒体数量、结构异常,运用逍遥散加减治疗后,颗粒细胞形态和线粒体结构趋于正常。
结论:
2
逍遥散加减通过激动D2R,抑制D1R,调节ERK/MAPK信号通路,并有效改善卵巢颗粒细胞线粒体功能,促进卵泡发育,说明逍遥散加减治疗HPRL是多靶点的作用机制。
Objective:
2
To explore the mechanism of modified Xiaoyaosan on extracellular regulated protein kinase(ERK) signal transduction pathway of central dopamine receptor in hyperprolactinemia(HPRL)model rats by treating them with Shugan Jianpi as the core.
Method:
2
The 96 SD female rats were randomly divided into normal group
model group
Bromocriptine group (0.001 g·kg
-1
)
modified Xiaoyaosan high
medium and low dose group(60
30
15 g·kg
-1
)
dopamine D1 receptor(D1R) antagonist group (SCH23390
SCH23390+ modified Xiaoyaosan group
SCH23390+ bromocriptine group)
dopamine D2 receptor(D2R) antagonist group (haloperidol group
haloperidol+ modified Xiaoyaosan group
haloperidol+ bromocriptine group). HPRL rat model was established by pituitary transplanta-tion. After 30 days of administration
renin-angiotensinsystem Ras and Raf protein expressions in thypothalamus of rats were detected by Western blot
and mitogen-activated protein kinase (MAPK) kinase 1/2(MEK1/2)mRNA and extracellular signaling regulates kinase 1/2(ERK1/2) mRNA expressions in the hypothalamus of rats were detected by Real-time PCR.The microstructures of mitochondria in ovarian granulosa cells were observed by electron microscopy.
Result:
2
The Ras
Raf protein
MEK1/2 and ERK1/2 mRNA expression were significantly decreased in model group compared with normal group (
P
<
0.01). After SCH23390 antagonistic DIR was applied
Ras
Raf pprotein
MEK1/2 and ERK1/2 mRNA expression in SCH23390 group showed an increased trend compared with model group
and when haloperidol was used to antagonistic D2R
Ras and Raf expression in haloperidol group showed a decreased trend compared with model group
and MEK1/2 and ERK1/2 mRNA expression significantly decreased(
P
<
0.01). The expression of Ras
Raf protein
MEK1/2 and ERK1/2 mRNA was significantly increased after using modified Xiaoyaosan(
P
<
0.01)
and the expression was significantly increased in the high and medium-dose groups of prescription(
P
<
0.01). The effect was better than that of bromocriptine group.The morphology of granulosa cells and the number and structure of mitochondria in model group were abnormal under electron microscope. After treatment with modified Xiaoyaosan
the morphology and structure of granulosa cells tended to be normal.
Conclusion:
2
Modified Xiaoyaosan stimulates D2R
inhibits D1R
regulates ERK/MAPK signaling pathway.It also effectively improve the mitochondrial function of ovarian granulosa cells and promote follicular development.It is suggested that the modified Xiaoyaosan with a multi-target mechanism in treating HPRL.
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