Figure 3.
Effects of analgesic agents on mechanical allodynia in TNX−/− mice. (a) Gabapentin (50 mg/kg), indomethacin (5 mg/kg), or vehicle was orally (p.o.) administrated in TNX−/− mice (n = 5). (b) DAMGO (1 μg) or vehicle was intrathecally (i.t.) administrated in TNX−/− mice (n = 8). 50% paw withdrawal thresholds were measured at the indicated times using von Frey test (up-down methods). The data are expressed as the mean ± S.E.M. **p < 0.01, ***p < 0.001 versus the saline-administrated value.