广州中医药大学第二附属医院针灸科,广东 广州510120
李声, 博士,副研究员,研究方向:针刺治疗抑郁疼痛作用机制研究,E-mail:lisheng@gzucm.edu.cn
纸质出版日期:2023-01-20,
收稿日期:2022-09-21,
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李声,黄键澎,罗丁等.电针对SNI诱导疼痛抑郁模型大鼠海马AcH3/BDNF的影响[J].中山大学学报(医学科学版),2023,44(01):44-50.
LI Sheng,HUANG Jian-peng,LUO Ding,et al.Effects of Electroacupuncture on Hippocampal AcH3 and BDNF in the Rat Model of SNI-induced Pain-Depression Dyad[J].Journal of Sun Yat-sen University(Medical Sciences),2023,44(01):44-50.
李声,黄键澎,罗丁等.电针对SNI诱导疼痛抑郁模型大鼠海马AcH3/BDNF的影响[J].中山大学学报(医学科学版),2023,44(01):44-50. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2023.0107.
LI Sheng,HUANG Jian-peng,LUO Ding,et al.Effects of Electroacupuncture on Hippocampal AcH3 and BDNF in the Rat Model of SNI-induced Pain-Depression Dyad[J].Journal of Sun Yat-sen University(Medical Sciences),2023,44(01):44-50. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2023.0107.
目的
2
观察电针对疼痛抑郁模型大鼠海马脑源性神经营养因子(BDNF)、乙酰化蛋白(AcH3)表达的影响,探讨电针镇痛抗抑郁的作用机制。
方法
2
雄性SD大鼠随机分为假手术组、模型组、电针组、药物组,每组6只。采用坐骨神经选择损伤术(SNI)建立疼痛抑郁模型。SNI术后1周进行相关干预直至术后6 周,电针组于隔日电针百会、印堂2 Hz 30 min治疗;药物组给予每日10 mg/kg丙咪嗪腹腔注射;假手术组、模型组给予相同的抓取。术前及术后1、2、3、4、5、6 周进行机械缩足反射阈值(PWT)测试,术后6周进行糖水偏好实验和强迫游泳实验行为学测试。行为学结束后取大鼠海马组织,采用Western blot法检测BDNF、AcH3的含量。
结果
2
与假手术组相比,模型组大鼠PWT、糖水偏好比率下降(
P
<
0.01),强迫游泳不动时间延长(
P
<
0.01),海马BDNF、AcH3表达减少(
P
<
0.05,
P
<
0.01),差异有统计学意义,提示疼痛抑郁模型建造成功。SNI术后6周,与模型组比较,电针组和药物PWT升高(
P
<
0.01),糖水消耗比率升高(
P
<
0.01),强迫游泳不动时间减少(
P
<
0.01),差异有统计学意义。与模型组比较,电针组海马AcH3、BDNF的表达增多(
P
<
0.05),药物组海马AcH3表达增多(
P
<
0.05),BDNF表达无明显变化。
结论
2
电针可缓解疼痛抑郁模型大鼠疼痛、抑郁行为症状,其镇痛抗抑郁机制可能与上调海马AcH3、BDNF表达相关。
Objective
2
To observe the impacts of electroacupuncture (EA) on the expression of hippocampal brain-derived neurotrophic factor (BDNF) and acetylated histone (AcH3) in the rat model of spared nerve injury (SNI), so as to explore the analgesic and antidepressant effects of EA.
Methods
2
Twenty-four Male SD rats were randomly divided into 4 groups, with 6 in each group. SNI was used to establish the model of pain and depression. All the groups were intervened one week after SNI surgery and persisted 5 weeks. The EA group was treated with EA (2 Hz) for 30 min every other day and imipramine drug group (IMP) group with peritoneal imipramine injection (10 mg/kg) per day. The sham surgery group (SS) and model group (SNI) received the same grasping stimulation. The paw mechanical withdrawal threshold (PWT) test was performed before the SNI surgery, 1, 2, 3, 4, 5, and 6 weeks after surgery, respectively. The forced swimming test (FST) and the sucrose preference test (SPT) were performed 6 weeks after SNI surgery. The Western blot method was employed to detect the expression of BDNF and AcH3 from the rat hippocampal tissue at the end of the behavioral tests.
Results
2
Compared with the SS group, the SNI group had significantly decreased PWT and sucrose consumption, prolonged FST immobility time (all
P
<
0.01), down-regulated BDNF and AcH3 expression (
P
<
0.05
&
P
<
0.01) in the hippocampus, which indicated the successful construction of the pain-depression model. Compared with the SNI group, 6 weeks after SNI surgery, the EA and IMP groups had significantly increased PWT and sucrose consumption, and reduced FST immobility time (all
P
<
0.01); the EA group had up-regulated BDNF and AcH3 expression (both
P
<
0.05) in the hippocampus, the IMP group had up-regulated AcH3 (
P
<
0.05) expression but no difference in BDNF expression.
Conclusion
2
EA could relieve pain and depressive behavioral symptoms in SNI rats. And its analgesic and antidepressant mechanisms may relate to the up-regulation of hippocampal AcH3 and BDNF expression.
电针疼痛抑郁乙酰化蛋白脑源性神经营养因子
electroacupuncturepaindepressionacetylated histonebrain-derived neurotrophic factor
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