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1.山西医科大学 附属大医院,太原 030000
2.安徽医科大学 附属巢湖医院,合肥 230031
[第一作者] 何玲玲,硕士,从事老年痴呆与脑血管病研究,E-mail:616819749@qq.com
*李新毅,博士,主任医师,从事老年痴呆与脑血管病研究,E-mail:xinyili2003@163.com
收稿日期:2019-01-10,
网络出版日期:2019-10-09,
纸质出版日期:2020-02-20
移动端阅览
何玲玲, 李晓琼, 刘晓蕾, 等. 加味不忘散对AD模型大鼠海马区NLRP3炎症通路中相关因子表达的影响[J]. 中国实验方剂学杂志, 2020,26(4):35-41.
Ling-ling HE, Xiao-qiong LI, Xiao-lei LIU, et al. Effect of Modified Buwangsan on Expression of Related Molecules in NLRP3 Inflammatory Signaling Pathway in Hippocampus of AD Rats[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(4): 35-41.
何玲玲, 李晓琼, 刘晓蕾, 等. 加味不忘散对AD模型大鼠海马区NLRP3炎症通路中相关因子表达的影响[J]. 中国实验方剂学杂志, 2020,26(4):35-41. DOI: 10.13422/j.cnki.syfjx.20200239.
Ling-ling HE, Xiao-qiong LI, Xiao-lei LIU, et al. Effect of Modified Buwangsan on Expression of Related Molecules in NLRP3 Inflammatory Signaling Pathway in Hippocampus of AD Rats[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(4): 35-41. DOI: 10.13422/j.cnki.syfjx.20200239.
目的:
2
通过观察加味不忘散对阿尔茨海默病(AD)模型大鼠学习记忆能力及海马区NOD样受体热蛋白结构域3(NLRP3)炎症通路中相关分子NLRP3,天冬氨酸蛋白酶-1(Caspase-1)和白细胞介素-1
β
(IL-1
β
)表达的影响,探讨其作用机制。
方法:
2
通过Morris水迷宫筛选出合格SD大鼠52只,随机均分为假手术组,AD模型组,加味不忘散低剂量组(1.5 g·kg
-1
),加味不忘散高剂量组(3 g·kg
-1
)。采用双侧海马注射
β
-淀粉样蛋白1-42(A
β
1-42
)5 μL (2 g·L
-1
)建立AD模型大鼠。造模后分别予低、高剂量加味不忘散灌胃,每日1次,连续4周。灌胃结束后通过Morris水迷宫法检测大鼠学习记忆能力,判断造模是否成功;通过实时荧光定量聚合酶链式反应(Real-time PCR),蛋白免疫印迹法(Western blot)检测大鼠海马组织中NLRP3,Caspase-1,IL-1
β
mRNA和蛋白的表达水平。
结果:
2
与假手术组比较,AD模型组大鼠学习记忆能力明显下降(
P
<
0.05);与AD模型组比较,加味不忘散低剂量组大鼠学习记忆能力无改善,NLRP3,Caspase-1,IL-1
β
mRNA和蛋白的表达水平均无统计学差异,加味不忘散高剂量组大鼠学习记忆能力明显改善,NLRP3,Caspase-1,IL-1
β
mRNA和蛋白的表达均明显下降(
P
<
0.05)。
结论:
2
高剂量加味不忘散可改善大鼠学习记忆能力,其机制可能与下调NLRP3炎症通路中NLRP3及下游Caspase-1,IL-1
β
的表达,抑制海马组织内的炎症反应有关。
Objective:
2
To investigate the effects of modified Buwangsan on the learning and memory ability of Alzheimer's disease (AD) model rats and the expression of NOD-like receptor 3 (NLRP3)
cysteine-containing aspartate-specific proteases 1 (Caspase-1) and interleukin-1 beta (IL-1
β
) in NLRP3 inflammatory pathway in hippocampus of AD model rats
and exploring the underlying mechanism of modified Buwangsan.
Method:
2
The 52 eligible rats were randomly divided into sham control group
AD model group
low-dose modified Buwangsan group (1.5 g·kg
-1
) and high-dose modified Buwangsan group (3 g·kg
-1
). AD mouse model was established by bilateral hippocampus injection of A
β
1-42
5 μL (2 g·L
-1
). The rats in low-dose and high-dose modified Buwangsan group received low and high dose modified Buwangsan respectively within the next 4 weeks
once daily. The learning and memory ability was tested by Morris water maze. The expression of NLRP3
Caspase-1 and IL-1
β
mRNA was tested by quantitative PCR(Real-time PCR) and Western blot.
Result:
2
As compared with the sham group
the learning and memory ability of the rats were significantly impaired (
P
<
0.05). Compared with AD model group
the learning and memory ability and the expression levels of NLRP3
Caspase-1
and IL-1
β
mRNA and protein were all no statistical differences in low-dose modified Buwangsan group
while the learning and memory ability of the rats were significantly improved and the expression of NLRP3
Caspase-1 and IL-1
β
mRNA in hippocampus of rats was significantly decreased in high-dose modified Buwangsan group (
P
<
0.05).
Conclusion:
2
High-dose modified Buwangsan could attenuate neuroinflammation in the hippocampus of AD mouse model via inhibiting the expression of NLRP3
Caspase-1 and IL-1
β
which may be the mechanisms of modified Buwangsan could be used to ameliorate the learning and memory ability of AD mouse model.
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