“…Levels of TNF- α, IL-6, and IL-1β are all increased following peripheral nerve injury and are temporally aligned with the onset and maintenance of hyperalgesia and/or allodynia (reviewed in Marchand et al, 2005 ). Furthermore, administration of IL-6, IL-1β, and TNF- α antagonists can reduce the magnitude of allodynia, hyperalgesia, and pain behaviors following nerve damage ( Sommer et al, 2001a ; Sommer et al, 2001b ; Lindenlaub et al, 2000 ; Schafers et al, 2001 ; Sommer et al, 1999 ). Similarly, IL-6 knockout mice demonstrate less hyperalgesia following nerve damage than their wildtype littermates ( Ramer et al, 1998 ; Murphy et al, 1999 ).…”