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黑龙江中医药大学 中药研究院,哈尔滨 150040
刘舒毓,在读硕士,从事中药药性理论及药效物质基础研究,E-mail:1366076152@qq.com
刘树民,博士,教授,博士生导师,从事中药药性理论及药效物质基础研究,E-mail:keji-liu@163.com
收稿日期:2021-08-22,
网络出版日期:2022-01-27,
纸质出版日期:2022-03-20
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刘舒毓,王秋月,刘树民.黄芪赤风汤对脑梗死大鼠模型的治疗作用及对脑组织ZO-1、Claudin-5、P-gp、MRP1蛋白表达的影响[J].中国实验方剂学杂志,2022,28(06):26-33.
LIU Shu-yu,WANG Qiu-yue,LIU Shu-min.Therapeutic Effect of Huangqi Chifengtang on Cerebral Infarction Rat Model and Its Effect on Expression of ZO-1, Claudin-5, P-gp and MRP1 Protein in Brain Tissue[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(06):26-33.
刘舒毓,王秋月,刘树民.黄芪赤风汤对脑梗死大鼠模型的治疗作用及对脑组织ZO-1、Claudin-5、P-gp、MRP1蛋白表达的影响[J].中国实验方剂学杂志,2022,28(06):26-33. DOI: 10.13422/j.cnki.syfjx.20220643.
LIU Shu-yu,WANG Qiu-yue,LIU Shu-min.Therapeutic Effect of Huangqi Chifengtang on Cerebral Infarction Rat Model and Its Effect on Expression of ZO-1, Claudin-5, P-gp and MRP1 Protein in Brain Tissue[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(06):26-33. DOI: 10.13422/j.cnki.syfjx.20220643.
目的
2
探究黄芪赤风汤对大脑中动脉栓塞(MCAO)大鼠模型的治疗作用及机制。
方法
2
将90只SPF级雄性大鼠随机分为假手术组,模型组,黄芪赤风汤高、中、低剂量组(中药低、中、高剂量组)(8.10、4.05、2.025 g·kg
-1
),脑心通组(脑心通,0.32 g·kg
-1
),建立MCAO大鼠模型,给予黄芪赤风汤药液进行干预,对各组大鼠进行神经功能学评分;大鼠脑组织采用2,3,5-氯化三苯四氮唑(TTC)染色,计算脑梗死面积;采用酶联免疫吸附测定法(ELISA)检测各组大鼠血清白细胞介素-6(IL-6)、白细胞介素-1
β
(IL-1
β
)、基质金属蛋白酶-9(MMP-9)、血管内皮生长因子(VEGF)和血管内皮生长因子受体2(VEGFR2)含量;采用苏木素-伊红(HE)染色观察各组大鼠脑组织病理变化;蛋白免疫印迹法(Western blot)检测大鼠脑组织闭锁小带蛋白-1(ZO-1)、紧密连接蛋白-5(Claudin-5)、P-糖蛋白(P-gp)和多药耐药蛋白1(MRP1)的表达。
结果
2
与假手术组比较,模型组大鼠神经功能评分、脑梗死率显著增加(
P
<
0.01),血清IL-6、IL-1
β
和MMP-9含量显著升高(
P
<
0.01),脑组织ZO-1,Claudin-5蛋白表达水平显著降低(
P
<
0.01),P-gp,MRP1蛋白表达水平显著升高(
P
<
0.01);与模型组比较,各给药组大鼠14 d神经功能评分明显降低(
P
<
0.05,
P
<
0.01),且有效改善脑组织病理变化,显著降低脑梗死率(
P
<
0.01),血清IL-6、IL-1
β
、MMP-9表达水平明显降低(
P
<
0.05,
P
<
0.01),VEGFR2含量显著增加(
P
<
0.01),中药高、中剂量组及脑心通组VEGF含量明星增加(
P
<
0.05,
P
<
0.01),中药低剂量组虽有下降趋势,但差异无统计学意义,中药高剂量组和脑心通组脑组织ZO-1、Claudin-5蛋白表达水平明显升高(
P
<
0.05,
P
<
0.01),P-gp、MRP1蛋白表达水平明显降低(
P
<
0.05)。
结论
2
黄芪赤风汤可以通过改善脑组织病理变化,减少炎症反应、促进血管生成、调节血脑屏障(BBB)功能,从而发挥治疗脑梗死作用。
Objective
2
To explore the therapeutic effect and mechanism of Huangqi Chifengtang on middle cerebral artery embolism(MCAO) rat model.
Method
2
The 90 SPF male rats were randomly divided into sham operation group, model group, high, medium and low dose groups of Huangqi Chifengtang (8.10,4.05,2.025 g·kg
-1
) and positive drug group (Naoxintong 0.32 g·kg
-1
). MCAO rat model was established and intervened with Huangqi Chifengtang, and the neurological scores of each group were scored. The area of cerebral infarction was calculated by 2,3,5-triphenyltetrazolium chloride (TTC) staining. Serum interleukin-6 (IL-6) and interleukin-1
β
(IL-1
β
) were detected by enzyme-linked immunosorbent assay (ELISA),The contents of matrix metalloproteinase-9(MMP-9), vascular endothelial growth factor(VEGF) and vascular endothelial growth factor receptor 2 (VEGFR2), the pathological changes of brain tissue in each group were observed by hematoxylin eosin (HE) staining. Western blot was used to detect zonule atresia protein-1(ZO-1), tight junction protein-5(Claudin-5) and P-glycoprotein (P-gp) and multidrug resistance protein 1(MRP1).
Result
2
Compared with the sham operation group, the neurological function score and cerebral infarction rate of the model group were significantly increased(
P
<
0.01), and the levels of IL-6, IL-1
β
and MMP-9 in serum were significantly increased(
P
<
0.01), the levels of ZO-1 and Claudin-5 protein expression decreased significantly(
P
<
0.01), and the levels of P-gp and MRP1 protein expression increased significantly(
P
<
0.01). Compared with the model group, the neurological function score of rats in each administration group decreased significantly at 14 days (
P
<
0.05,
P
<
0.01), the pathological changes of brain tissue effectively improved, the rate of cerebral infarction significantly reduced (
P
<
0.01), and the expression level of IL-6, IL-1
β
and MMP-9 in serum decreased significantly (
P
<
0.05,
P
<
0.01), the content of VEGFR2 increased significantly (
P
<
0.01), and the content of VEGF increased significantly in high, medium dose and positive drug groups (
P
<
0.05,
P
<
0.01). Although it decreased in low dose group, there was no significant difference. The levels of ZO-1 and Claudin-5 protein expression in brain tissue of high dose group and positive drug group increased significantly (
P
<
0.05,
P
<
0.01), the level of MRP1 and P-gp protein expression decreased significantly (
P
<
0.05).
Conclusion
2
Huangqi Chifengtang can play a therapeutic role in rats with cerebral infarction by improving the pathological changes of brain tissue, reducing inflammatory reaction, promote angiogenesis and regulating the function of blood-brain barrier(BBB).
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