Effects of intrathecal treatment with Cavβ3-specific siRNA (5 μg per day for 3 days) on nociceptive and tactile withdrawal thresholds of hind paws in SNL rats.
A, time course effects of control siRNA and Cavβ3-specific siRNA on the nociceptive withdrawal threshold, tested with a noxious pressure stimulus, of hind paws ipsilateral and contralateral to SNL (n = 6 rats in each group). B, time course effects of control siRNA and Cavβ3-specific siRNA on the tactile withdrawal threshold, measured with von Frey filaments, of hind paws ipsilateral and contralateral to SNL (n = 6 rats in each group). Note that Cavβ3-specific siRNA, but not control siRNA, increased nociceptive and tactile withdrawal thresholds of hind paws ipsilateral to SNL. Ipsi, ipsilateral (nerve injury) side; Cont, contralateral (control) side. *, p < 0.05, compared with the base-line value in Cavβ3-specific siRNA-treated group.