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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Pain. 2011 Oct 26;152(12):2827–2835. doi: 10.1016/j.pain.2011.09.013

Figure 5. Lack of correlation between cytokine gene expression in the hippocampus of SD rats with chronic pain.

Figure 5

The expression of IL-1β on the side of the hippocampus contralateral to the operated paw 14 and 60 days after sham (A, C; n=16) or CCI and SNI (B, D; n= 32) in SD rats is plotted together with the IL-1ra and IL-6 values corresponding to each individual animal. While positive correlations were observed in sham-operated rats, no significant correlations were established in rats with chronic pain. The corresponding R2 and p values as determined by regression analysis are indicated below each corresponding pannel.