Fig. 1.
Effects of antagonists of mGluR1 (A,B) and mGluR5 (C,D), and agonists of group II (E,F) and group III (G,H) mGluRs on nociceptive responses (nociceptive score +/− standard error of the mean (SEM)) to formalin in both sham (left column) and CCI (right column) rats. The mGluR agents reduce formalin-induced nociception to varying degrees in both sham and CCI rats. Asterisks indicate the time points where nociceptive scores are significantly reduced by the drug as compared to vehicle (*p < 0.05, Fisher’s LSD post hoc).