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Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn

  • Authors:
    • Xiaoning Li
    • Wei Zhang
  • View Affiliations / Copyright

    Affiliations: Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
    Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3835-3840
    |
    Published online on: August 29, 2018
       https://doi.org/10.3892/etm.2018.6664
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Abstract

This study aimed to investigate the influence of intrathecal injection with dexmedetomidine on the beha vioral ability and analgesic effects of rat models with chronic neuropathic pain. It also discusses the role that the expression of protein kinase C (PKC) in the spinal dorsal horn plays in the analgesic mechanism of dexmedetomidine. A total of 35 Sprague Dawley rats were selected. Five rats were randomly chosen as the blank control group and the rest were prepared as models with chronic constriction injury, which were divided into the model and the observation group (n=15, each group). The observation group was injected with 10 ml dexmedetomidine intrathecally, while the model group was injected with an equivalent amount of saline. The behavioral abilities were evaluated by cumulative and motor function score. In addition, mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL) were applied for the detection of pain threshold. Immunohistochemistry staining method was used to test the positive expression of PKC, and western blot analysis was used for the detection of PKC quantitative expression levels. After initiation, the instant cumulative and motor function score of the model and observation groups increased, while the values of MWT and TWL decreased. After initiation, the positive expression of PKC in the spinal dorsal horn of the model and observation groups rose dramatically, and the quantitative expression level was also on the rise. The positive and quantitative expression levels in the observation group reduced gradually over time. Thus, the intrathecal injection of dexmedetomidine may improve the behavioral ability of rats with chronic neuralgia and reduce the degree of pain, which may be associated with the inhibition of the expression of PKC in the spinal dorsal horn.
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Copy and paste a formatted citation
Spandidos Publications style
Li X and Zhang W: Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn. Exp Ther Med 16: 3835-3840, 2018.
APA
Li, X., & Zhang, W. (2018). Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn. Experimental and Therapeutic Medicine, 16, 3835-3840. https://doi.org/10.3892/etm.2018.6664
MLA
Li, X., Zhang, W."Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn". Experimental and Therapeutic Medicine 16.5 (2018): 3835-3840.
Chicago
Li, X., Zhang, W."Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn". Experimental and Therapeutic Medicine 16, no. 5 (2018): 3835-3840. https://doi.org/10.3892/etm.2018.6664
Copy and paste a formatted citation
x
Spandidos Publications style
Li X and Zhang W: Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn. Exp Ther Med 16: 3835-3840, 2018.
APA
Li, X., & Zhang, W. (2018). Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn. Experimental and Therapeutic Medicine, 16, 3835-3840. https://doi.org/10.3892/etm.2018.6664
MLA
Li, X., Zhang, W."Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn". Experimental and Therapeutic Medicine 16.5 (2018): 3835-3840.
Chicago
Li, X., Zhang, W."Influence of intrathecal injection with dexmedetomidine on the behavioral ability and analgesic effects on rats with neuropathic pain and expression of protein kinase C in the spinal dorsal horn". Experimental and Therapeutic Medicine 16, no. 5 (2018): 3835-3840. https://doi.org/10.3892/etm.2018.6664
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