Objective To observe the expression of vimentin (Vim) after silence of interleukin-1β (IL-1β) in rats with spinal cord contusion (SCC).Methods The model of SCC was established in 30 Sprague-Dawley rats with Allen's method. The rats were randomized into vector group (n=15) and silence group (n=15), which were injected blank lentivirus vector and vector of IL-1β siRNA, respectively; and divided in three, seven and 28 days subgroups. The relationship between IL-1β and Vim was predicted with GeneMANIA bioinformatics. The expression of Vim protein and mRNA in spinal cord was detected with immunohistochemistry and real-time quantitative polymerase chain reaction.Results GeneMANIA bioinformatic analysis indicated that there was some direct and indirect relationship between IL-1β and Vim. The Vim protein and mRNA expressed in the spinal cord, and was less in the silence group than in the vector group (t>2.875, P<0.05). Conclusion Silence of IL-1β can inhibit the expression of Vim in SCC rats, which may promote the recovery of spinal cord function.
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