吉林大学学报(医学版) ›› 2021, Vol. 47 ›› Issue (3): 545-550.doi: 10.13481/j.1671-587X.20210302

• 基础研究 • 上一篇    下一篇

三焦针法通过激活SDF-1α/CXCR4通路对快速老化模型小鼠学习和记忆能力的改善作用

王煜1,赵岚2(),阚伯红2,史慧妍2   

  1. 1.天津中医药大学第一附属医院针灸科,天津 300193
    2.天津中医药大学第一附属医院 针灸研究所,天津 300193
  • 收稿日期:2020-12-13 出版日期:2021-05-28 发布日期:2021-05-28
  • 通讯作者: 赵岚 E-mail:lanzhao69@163.com
  • 作者简介:王 煜(1984-),女,河北省沧州市人,医学博士,副主任医师,主要从事神经系统疾患针刺方面的研究。
  • 基金资助:
    天津市教委科研计划项目(2017KJ149)

Improvement effect of Sanjiao acupuncture on learning and memory abilities of rapid aging model mice by activating SDF-1α/CXCR4 pathway

Yu WANG1,Lan ZHAO2(),Bohong KAN2,Huiyan SHI2   

  1. 1.Department of Acupuncture, First Affiliated Hospital, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
    2.Institute of Acupuncture, First Affiliated Hospital, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
  • Received:2020-12-13 Online:2021-05-28 Published:2021-05-28
  • Contact: Lan ZHAO E-mail:lanzhao69@163.com

摘要: 目的

探讨三焦针法对快速老化模型(SAMP8)小鼠神经功能和基质细胞衍生因子1α/趋化因子受体4(SDF-1α/CXCR4)通路的改善作用,探讨三焦针法在SAMP8小鼠中的作用机制。

方法

实验分为模型组(SAMP8小鼠)、非穴位针刺组(SAMP8小鼠+非穴位针刺)、穴位针刺组(SAMP8小鼠+穴位针刺)、穴位针刺+AMD3100组(SAMP8小鼠+穴位针刺+AMD3100处理)和对照组(SAMR1小鼠),每组10只小鼠。Morris水迷宫实验检测各组小鼠学习和记忆功能指标,酶联免疫吸附试验(ELISA)法检测各组小鼠海马组织中β淀粉样蛋白(Aβ)1-42水平,胆碱乙酰基转移酶(chAT)和乙酰胆碱酯酶(AchE)试剂盒检测各组小鼠海马组织中chAT和AchE活性,Western blotting法检测各组小鼠海马组织中SDF-1α和CXCR4蛋白表达水平。

结果

与对照组比较,模型组小鼠逃避潜伏期延长(P<0.05),海马组织中Aβ1-42水平升高(P<0.05),穿越平台次数、原象限游泳距离与总距离比值、原象限游泳时间与总时间比值和海马组织中chAT及AchE活性、SDF-1α及CXCR4蛋白表达水平降低(P<0.05);与模型组比较,穴位针刺组小鼠逃避潜伏期缩短(P<0.05),海马组织中Aβ1-42水平降低(P<0.05),穿越平台次数、原象限游泳距离与总距离比值、原象限游泳时间与总时间比值和海马组织中chAT活性、SDF-1α及CXCR4蛋白表达水平升高(P<0.05);与穴位针刺组比较,穴位针刺+AMD3100组小鼠逃避潜伏期延长(P<0.05),海马组织中Aβ1-42水平升高(P<0.05),穿越平台次数、原象限游泳距离与总距离比值、原象限游泳时间与总时间比值和海马组织中chAT活性、SDF-1α及CXCR4蛋白表达水平降低(P<0.05)。

结论

三焦针法可能通过激活SDF-1α/CXCR4通路减少Aβ1-42的积累,改善SAMP8小鼠的神经功能。

关键词: 基质细胞衍生因子1α/趋化因子受体4通路, 三焦针法, 快速老化模型, 神经功能

Abstract: Objective

To investigate the improvement effect of Sanjiao acupuncture on the neurological function and stromal cell-derived factor-1α/chemokine receptor 4 (SDF-1α/CXCR4) pathway of the rapid aging model (SAMP8)mice, and to explore the mechanism of Sanjiao acupuncture in the SAMP8 mice.

Methods

The experiment was divided into model group (SAMP8 mice), non-acupuncture group (SAMP8 mice + non-acupuncture), acupuncture group (SAMP8 mice + acupuncture), acupuncture + AMD3100 group (SAMP8 mice + acupuncture + AMD3100 treatment),and control group (SAMR1 mice),and there were 10 mice in each group. Morris water maze test was used to detect the learning and memory function indexes of the mice in various groups; enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of amyloid β (Aβ) 1-42 in hippocampus tissue of the mice in various groups; choline acetyltransferase (chAT) and acetylcholinesterase (AchE) kits were used to detect the activities of chAT and AchE in hippocampus tissue of the mice in various groups; Western blotting method was used to detect the expression levels of SDF-1α and CXCR4 proteins in hippocampus tissue of the mice in various groups.

Results

Compared with control group, the escape latency of the mice in model group was prolonged(P<0.05), the level of Aβ1-42 in hippocampus tissue of the mice was increased (P<0.05), the number of crossing the platform, the ratio of swimming distance in the original quadrant to total distance, the ratio of swimming time in the original quadrant to total time, the activities of chAT and AchE in hippocampus tissue,and the levels of SDF-1α and CXCR4 proteins in hippocampus tissue of the mice were decreased (P<0.05); compared with model group, the escape latency of the mice in acupuncture group was shortened(P<0.05), the level of Aβ1-42 in hippocampus tissue of the mice was decreased (P<0.05), the number of crossing the platform, the ratio of swimming distance in the original quadrant to total distance, and the ratio of swimming time in the original quadrant to total time, the activity of chAT in hippocampus tissue,and the expression levels of SDF-1α and CXCR4 proteins in hippocampus tissue of the mice were increased (P<0.05); compared with acupuncture group, the escape latency of the mice in acupuncture + AMD3100 group was prolonged(P<0.05), the level of Aβ1-42 in hippocampus tissue of the mice was increased (P<0.05),the number of crossing the platform, the ratio of swimming distance in the original quadrant to total distance, and the ratio of swimming time in the original quadrant to total time, the activity of chAT in hippocampus tissue,and the expression levels of SDF-1α and CXCR4 proteins in hippocampus tissue of the mice were decreased(P<0.05).

Conclusion

Sanjiao acupuncture may reduce the accumulation of Aβ1-42 by activating the SDF-1α/CXCR4 pathway, and improve the neurological function of the SAMP8 mice.

Key words: stromal cell derived factor-1α/chemokine receptor 4 pathway, Sanjiao acupuncture, rapid aging model, neurological function

中图分类号: 

  • R245.3