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Effect of Acupuncture on the Notch Signaling Pathway in Rats with Brain Injury

  • Acupuncture Research
  • Published:
Chinese Journal of Integrative Medicine Aims and scope Submit manuscript

Abstract

Objective

To observe the effect of acupuncture on the Notch signaling pathway in rats with traumatic brain injury and to explore the pathogenesis of acupuncture intervention on traumatic brain injury.

Methods

Feeney’s freefall epidural impact method was used to establish a traumatic brain injury model in rats; the rats were randomly divided into a normal group, sham operation group, model group and acupuncture group. Acupuncture was performed in the Baihui (DU 20), Shuigou (DU 26), Fengfu (DU 16), Yamen (DU 15) and Hegu (LI 4) acupoints in the rat, and Yamen was punctured via Fengfu. Then, the rats in each group were randomly divided into three subgroups, namely the day 3 subgroup, day 7 subgroup and day 14 subgroup according to treatment duration. The modified neurological severity scores (mNss) method was used to perform neurobehavioral scoring for evaluating the degree of injury in the rats. The hematoxylin-eosin (HE) staining method was used to observe the pathological change in the brain tissue of rats in each group. Real-time fluorescent quantitative polymerase chain reaction (Q-PCR) technology was used to detect changes in the Notch1, Hes1 and Hes5 gene expression levels in the cortex on the injured side. Western blot was used to detect the protein expression changes.

Results

One day after modeling, the mNss scores in the model group and in the acupuncture group were significantly higher than those in the normal and sham operation groups (P<0.01) ; there was no statistically significant difference between the normal group and the sham operation group. The scores decreased with increased treatment time, and the scores in the acupuncture group decreased more significantly than those in the model group (P<0.01). The pathological examination by the HE staining method demonstrated that the brain tissue of the rats in the acupuncture and model groups relatively significantly changed. The Notch1 gene expression level in the acupuncture group was significantly higher than the level in all of the other groups (P<0.01) ; the Hes1 and Hes5 gene expression levels were also higher in the acupuncture group. The expression changes of the Notch1 and Hes1 protein were consistent with that of mRNA. In each experimental group, the mNss score and the pathological results by the HE staining method were consistent with the mRNA results.

Conclusion

Acupuncture could significantly promote high expression levels of Notch1, Hes1 and Hes5 in the brain tissue of traumatic brain injury rats. Therefore, acupuncture might be an important intervention for inducing endogenous stem cell proliferation and for promoting nerve repair.

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Authors and Affiliations

  1. Department of Traditional Chinese Medicine, School of Medicine, Jinan University, 510632, Guangzhou, China

    Yi-min Zhang, Sheng-xin Chen, Qiu-fu Dai, Shu-ting Jiang, Ai-lian Chen & Yu-qing Zhang

  2. Clinical Medical School of Acupuncture Rehabilitation, Guangzhou University of Traditional Chinese Medicine, 510405, Guangzhou, China

    Chun-zhi Tang

Authors
  1. Yi-min Zhang
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  2. Sheng-xin Chen
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  3. Qiu-fu Dai
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  4. Shu-ting Jiang
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  5. Ai-lian Chen
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  6. Chun-zhi Tang
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  7. Yu-qing Zhang
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Correspondence to Yi-min Zhang.

Additional information

Supported by the National Natural Science Foundation of China (No. 81273827), the Project of Science and Technology of Guangdong, China (No. 2011B031800284) and the Science and Technology Program of Guangzhou, China (No. 2010GN-E00221)

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Zhang, Ym., Chen, Sx., Dai, Qf. et al. Effect of Acupuncture on the Notch Signaling Pathway in Rats with Brain Injury. Chin. J. Integr. Med. 24, 537–544 (2018). https://doi.org/10.1007/s11655-015-1969-9

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  • DOI: https://doi.org/10.1007/s11655-015-1969-9

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