Figure 4From: Progesterone produces antinociceptive and neuroprotective effects in rats with microinjected lysophosphatidic acid in the trigeminal nerve root Delayed effects of progesterone treatment (8 or 16 mg/kg/day) on mechanical allodynia produced by the microinjection of LPA into the trigeminal nerve root. Progesterone-treated animals showed significant delayed anti-allodynic effects. The lines denote the period of five progesterone treatments. * P < 0.05, vehicle- vs. progesterone-treated group.Back to article page