Abstract
We validate the analgesic efficacy of tianeptine by different administration routes and timing in a rat model of neuropathic pain. Neuropathic pain was induced by ligating the L5 and L6 spinal nerves in male Sprague–Dawley rats, and mechanical allodynia was assessed using von Frey filaments. The effects of orally administered tianeptine and pretreatment with tianeptine (intrathecally or intraperitoneally) on mechanical allodynia were assessed. Oral and preemptive intrathecal administration of tianeptine significantly increased the paw withdrawal threshold but preemptive intraperitoneal administration did not. Nevertheless, intraperitoneal pretreatment of tianeptine potentiated the antiallodynic effects of subsequently administered tianeptine. These findings suggest that tianeptine may be effective for preventing and treating neuropathic pain and that it can be used more widely in clinical pain practice.
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