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山西省中医药研究院,太原 030012
郝雨蒙,在读硕士,从事中药药理与内分泌疾病研究,Tel:0351-4174328,E-mail:630380521@qq.com
冯玛莉,硕士生导师,主任医师,从事中药药理和内分泌疾病的研究工作,Tel: 0351-4174328,E-mail: fengmali1@163.com
收稿日期:2018-12-10,
网络出版日期:2019-03-19,
纸质出版日期:2019-07-20
移动端阅览
郝雨蒙, 王若瑜, 仲启明, 等. 异虎耳草素对原代海马神经元细胞抑制性神经递质及其受体基因表达的影响[J]. 中国实验方剂学杂志, 2019,25(14):93-98.
Yu-meng HAO, Ruo-yu WANG, Qi-ming ZHONG, et al. Effect of Isopimpinellin on Expression of Inhibitory Neurotransmitter and Receptor Genes in Primary Hippocampal Neurons[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(14): 93-98.
郝雨蒙, 王若瑜, 仲启明, 等. 异虎耳草素对原代海马神经元细胞抑制性神经递质及其受体基因表达的影响[J]. 中国实验方剂学杂志, 2019,25(14):93-98. DOI: 10.13422/j.cnki.syfjx.20191302.
Yu-meng HAO, Ruo-yu WANG, Qi-ming ZHONG, et al. Effect of Isopimpinellin on Expression of Inhibitory Neurotransmitter and Receptor Genes in Primary Hippocampal Neurons[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(14): 93-98. DOI: 10.13422/j.cnki.syfjx.20191302.
目的:
2
观察异虎耳草素对原代海马神经元细胞
γ
-氨基丁酸(GABA),5-羟色胺(5-HT)含量及受体基因表达的影响,探讨其催眠作用机制。
方法:
2
体外培养SD乳鼠原代海马神经元细胞,在细胞生长状态最佳时,经神经元特异性烯醇化酶(NSE)免疫组化鉴定纯度并给药。分为空白组,地西泮组(25 mg·L
-1
),异虎耳草素低、中、高剂量组(5,10,20 mg·L
-1
),共5组,给药24 h后流式细胞术检测海马神经元细胞早期凋亡率,酶联免疫吸附测定(ELISA)检测细胞上清液GABA,5-HT含量,实时荧光定量聚合酶链式反应(Real-time PCR)检测细胞内
γ
-氨基丁酸A型受体(GABAA)基因GABRA
1
,GABRA
5
,GABRB
2
,
γ
-氨基丁酸 B型受体(GABAB)基因GABBR1,5-羟色胺1A型受体(5-HT1
A
)基因5-HT1
A(A)
,5-HT1
A(B)
,5-HT1
A(C)
表达的变化。
结果:
2
第7天海马神经元细胞生长状态良好,鉴定纯度
>
90%;与空白组比较,海马神经元细胞早期凋亡率异虎耳草素中、高剂量组显著降低(
P
<
0.01),GABA含量异虎耳草素高剂量组显著升高(
P
<
0.01),GABRA
1
,GABRA
5
,5-HT1
A(A)
,5-HT1
A(C)
mRNA表达异虎耳草素中、高剂量组显著升高(
P
<
0.05,
P
<
0.01),GABBR
1
,5-HT1
A(B)
mRNA表达异虎耳草素各组均显著升高(
P
<
0.05,
P
<
0.01)。
结论:
2
异虎耳草素催眠作用机制可能与抑制海马神经元细胞凋亡,升高抑制性神经递质GABA含量,上调GABA与5-HT相关受体基因表达有关。
Objective:
2
To observe the effect of isopimpinellin on primary hippocampal neuron cells
γ
-aminobutyric acid (GABA)
5-hydroxytryptamine (5-HT) and receptor genes expressions
in order to explore its hypnotic mechanism.
Method:
2
The primary hippocampal neurons of neonatal Sprague-Dawley rats were cultured
in vitro
. And subsequent experiments were conducted in the optimal state of cell growth
and the purity was identified by immunohistochemistry of neuron-specific enolase. Hippocampal neurons were randomly divided into five groups
namely blank control group
diazepam group (25 mg·L
-1
)
and low-dose (5 mg·L
-1
)
moderate-dose (10 mg·L
-1
) and high-dose (20 mg·L
-1
) isopimpinellin groups. Early apoptosis of hippocampus neuron cells were detected using flow cytometry technique after 24 h administration
and the changes in the levels of GABA and 5-HT were detected using enzyme-linked immunosorbent. The changes in mRNA expressions of receptor genes relating to gamma-aminobutyric acid type A receptor(GABAA) genes GABRA
1
GABRA
5
GABBR
1
gamma-aminobutyric acid type B receptor genes (GABAB) GABRB
2
5-hydroxytryptamine 1A receptor (5-HT1
A
)5-HT1
A(A)
5-HT1
A(B)
5-HT1
A(C)
were detected by real-time quantitative PCR(Real-time PCR).
Result:
2
On the 7
th
day
the hippocampal neurons grew in a good condition
and the purity was above 90%. Apoptosis rates of hippocampal neurons in the low-dose and moderate-dose groups were significantly lower than that in the blank control group (
P
<
0.01). The level of GABA secreted by hippocampal neurons in the high-dose isopimpinellin group were significantly higher than that in the blank control group (
P
<
0.01). The mRNA expression levels of GABRA
1
GABRA
5
5-HT1
A(A)
5-HT1
A(C)
in the moderate-dose and high-dose isopimpinellin groups were significantly higher than those in the blank control group (
P
<
0.05
P
<
0.01). The mRNA expression levels of GABBR
1
5-HT1
A(B)
in the low-dose
moderate-dose and high-dose isopimpinellin groups were significantly higher than those in the blank control group (
P
<
0.05
P
<
0.01).
Conclusion:
2
The hypnotic mechanism of isopimpinellin may be related to the inhibition of hippocampal neuron apoptosis
the increase of the content of inhibitory neurotransmitter GABA
and the up-regulation of GABA and 5-HT-related receptor genes.
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