• Zhongguo Yi Xue Ke Xue Yuan Xue Bao · Dec 2013

    [Expressions of neuropathic pain-related proteins in the spinal cord dorsal horn in rats with bilateral chronic constriction injury].

    • Le Shen, Xu Li, Hai-tang Wang, Xue-rong Yu, and Yu-guang Huang.
    • Department of Anesthesiology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China.
    • Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 2013 Dec 1;35(6):628-33.

    ObjectiveTo evaluate the pain-related behavioral changes in rats with bilateral chronic constriction injury(bCCI)and identify the expressions of neuropathic pain-related proteins.MethodsThe bCCI models were established by ligating the sciatic nerves in female Sprague Dawley rats. Both mechanical hyperalgesia and cold hyperalgesia were evaluated through electronic von Frey and acetone method. Liquid chromatography-mass spectrometry/mass spectrometry was applied to characterize the differentially expressed proteins.ResultsBoth mechanical withdrawal threshold and cold hyperalgesia threshold decreased significantly on the postoperative day 7 and 14, when compared with na ve or sham rats(P <0.05). Twenty five differentially expressed proteins associated with bilateral CCI were discovered, with eighteen of them were upregulated and seven of them downregulated.ConclusionsThe bCCT rats have remarkably decreased mechanical and cold hyperalgesia thresholds. Twenty five neuropathic pain-related proteins are found in the spinal cord dorsal horn.

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