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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2019, Vol. 24 ›› Issue (11): 1263-1268.doi: 10.12092/j.issn.1009-2501.2019.11.008

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Effects of regulation ROS on the pain and the protein of Pink1 in spinal of SNI mice and its mechannism

CAI Miaoguo1, SHAO Wei1, YU Huijun2, HONG Ye1, SHI Lili 3   

  1. 1 Department of Oncology, Luqiao Branch of Taizhou Hospital, Taizhou 318050, Zhejiang, China; 2 Department of Pediatrics, Luqiao Branch of Taizhou Hospital, Taizhou 318050, Zhejiang, China; 3 Infection Department of Luqiao Hospital, Taizhou Hospital, Taizhou 318050, Zhejiang, China
  • Received:2019-07-01 Revised:2019-08-15 Online:2019-11-26 Published:2019-12-02

Abstract:

AIM: To observe the effect of oxidative stress on the expression of Pink1 in mechanical pain and spinal cord after C57/BL6 mice with spared nerve injury (SNI), and to explore the possible effects and mechanism of oxidative stress on Pink1 in neuropathic pain. METHODS: Sixty mice were randomly divided into Control group, Sham group (Sham), Surgery group (SNI), SNI+Saline, and SNI+phenyl-N-tert-butylnitrone (PBN). The Control group received no treatment. The Sham group was cut the skin and separated the three branches of the sciatic nerve to suture the skin. The SNI group was freed and retained the branches of the sacral nerve, and ligated and cut the phrenic nerve. The mechanical pain threshold was detected after 14 days. After the behavioral test, the SNI group was injected with 0.9% physiological saline and PBN. Behavioral measurements were performed and oxidative stress (GSH, SOD) levels were measured. Western blot was used to detect the expression of Pink1 in the lumbar spinal cord protein in each group. RESULTS:Compared with the Control and Sham groups, the mechanical pain threshold was significantly lower in the SNI group (P<0.001); In the SNI group, the ROS level in the lumbar spinal cord was increased (P<0.05), and the ROS level was decreased after PBN injection (P<0.001); Pink1 expression was increased at the protein level in SNI mice (P<0.001), and the expression of Pink1 in the spinal cord decreased after ROS decreased (P<0.01). CONCLUSION:Pink1 is highly expressed in the protein level in the spared nerve injury, and reduced ROS level can improve the expression of Pink1 in neuropathic pain of mice.

Key words: spared nerve injury, mitochondria, Pink1, ROS, mice

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