Chinese Journal Of Clinical Anatomy ›› 2019, Vol. 37 ›› Issue (2): 148-152.doi: 10.13418/j.issn.1001-165x.2019.02.007

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Effect of Puerarin on the expression of MMP-9 protein in spinal cord after brachial plexus root avulsion

CHEN Chuan-qi 1,2, CHEN Long-ju 1,3, WU Tai-ding 1, TAN Yun-xia 1, LI Dan 1, WANG Yu 1   

  1. 1.Department of Anatomy, Medical College, Hubei Minzu University;2.Obstetrics and Gynecology Department, Affiliated the Central Hospital of ENSHI Tujia and Miao Autonomous Prefecture, Hubei Minzu University; 3.Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Disease, Enshi 445000, Hubei Province, China
  • Received:2017-10-26 Online:2019-03-25 Published:2019-04-29

Abstract:

Objective    To investigate the expression changes of matrix metalloproteinase-9 (MMP-9) in spinal cord after brachial plexus root avulsion and the effect of Puerarin on its expression.    Methods    A total of 174 adult male SD rats were randomly divided into a normal group, a model group, Puerarin low, medium and high treatment groups. The model group and the Puerarin treatment groups underwent the right C5~C7 anterior nerve root avulsion. The rats were injected intraperitoneally Puerarin every day after the operation. The expression of MMP-9 protein in C5~C7 segment of spinal cord was detected by Western Blot.  Results  Compared with the normal group, the expression of MMP-9 protein peaked at the 1st day after brachial plexus root avulsion, decreased near to normal at the 3rd day and decreased to a lower level after 1 week. The expression of MMP-9 protein in spinal cord tissue of Puerarin treatment group was significantly lower than the model group at the 1st day.    Conclusion    MMP-9 may be involved in the early injury response to brachial plexus root avulsion, and Puerarin may help to alleviate this injury.

Key words: Puerarin,  Brachial plexus,  Nerve injury,  Matrix metalloproteinase-9