Table 2.

Ratio of δOR/GAPDH mRNA expression in the rat dorsal root ganglia

Ratio of δOR/GAPDH n
Saline 0.116 ± 0.012 6
MS 24 h 0.167 ± 0.033 4
MS 48 h 0.131 ± 0.012 4
CFA 72 h (ipsi) 0.132 ± 0.018 4
CFA 72 h (contra) 0.134 ± 0.004 3
  • Data are the mean ± SEM of the ratio of δOR/GAPDH mRNA fluorescence levels in rat dorsal root ganglia after real-time RT-PCR amplification. No significant difference is apparent between any groups (p > 0.05; one-way ANOVA followed by Bonferroni's MCT). MS 24 h, Morphine sulfate 24 h (using doses of 5 and 8 mg/kg, respectively, given every 12 h); MS 48 h, morphine sulfate 48 h (using doses of 5,8,10, and 15 mg/kg, respectively, given every 12 h); ipsi, side ipsilateral to CFA injection; contra, side contralateral to CFA injection; n, number of rats tested in each condition.