BJA Advance Access originally published online on August 1, 2006
British Journal of Anaesthesia 2006 97(4):553-558; doi:10.1093/bja/ael209
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Alleviation of neuropathic pain by intrathecal injection of antisense oligonucleotides to p65 subunit of NF-
B
1 Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430022, China
2 Department of Pain Management,Shandong Provincial Hospital Jinan 250021, China
3 Department of Anesthesiology, The Second Hospital in Shenzhen Shenzhen 518035, China
*Corresponding author. E-mail: yaoshanglong{at}eyou.com
Background. Treatment of neuropathic pain remains a challenge. The current study investigated the therapeutic effect of intrathecal administration of NF-
B antisense oligodeoxynucleotides (ODNs) on mechanical allodynia and thermal hyperalgesia in a chronic constriction injury (CCI) model of rats.
Methods. Lumbar intrathecal catheters were implanted in male SpragueDawley rats and a CCI model was established. Thermal and mechanical nociceptive thresholds were assessed with paw withdrawal latency (PWL) to radiant heat and von Frey filaments. The phosphorothioate-modified antisense ODNs to p65 subunit of NF-
B were administered intrathecally on each of five consecutive days post-CCI. Nuclear NF-
B p65 expression was assessed by western blot.
Results. CCI induced mechanical allodynia and thermal hyperalgesia and significantly increased NF-
B p65 protein expression. Intrathecal injection of antisense ODN markedly suppressed the expression of NF-
B p65 protein and significantly attenuated CCI-induced mechanical allodynia and thermal hyperalgesia.
Conclusion. The activation of NF-
B pathway may contribute to neuropathic pain in CCI rats. Suppression of NF-
B could be a potential new strategy for the treatment of neuropathic pain.
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