PMID- 17530308 OWN - NLM STAT- MEDLINE DCOM- 20070730 LR - 20220716 IS - 0344-5607 (Print) IS - 0344-5607 (Linking) VI - 30 IP - 3 DP - 2007 Jul TI - BDNF contributes to animal model neuropathic pain after peripheral nerve transection. PG - 235-43; discussion 243 AB - The outcome of peripheral nerve injury is often impaired by neuropathic pain, which is resistant to most analgesics and presents a serious clinical problem. The mechanisms underlying post-traumatic neuropathic pain remain unclear, but they are likely associated with the regeneration processes. Brain-derived neurotrophic factor (BDNF) is known to enhance peripheral nerve regeneration and is also considered to be an endogenous modulator of nociceptive responses following spinal cord lesion. The aim of this work was to examine the local effect of BDNF in a neuropathic pain model. Sciatic nerves of adult male rats were transected and supplied with connective tissue chambers filled with (1) fibrin only, (2) fibrin with BDNF, or (3) fibrin with antibodies against BDNF. In control animals the nerve was transected and no chamber was applied. During follow-up, autotomy behavior was assessed. Seven weeks after the operation, the number of surviving and regenerating neurons in dorsal root ganglia was counted and the neuroma incidence was examined. We found that local inactivation of BDNF decreased the incidence as well as severity of autotomy and neuroma formation, but did not influence neuron regeneration into the chambers. These results indicate that BDNF plays a locally crucial role in neuropathic pain development after peripheral nerve injury. FAU - Marcol, Wieslaw AU - Marcol W AD - Department of Physiology, Medical University of Silesia, 18 Medykow St., 40-752, Katowice, Poland. Vie@alpha.net.pl FAU - Kotulska, Katarzyna AU - Kotulska K FAU - Larysz-Brysz, Magdalena AU - Larysz-Brysz M FAU - Kowalik, Joanna Lewin AU - Kowalik JL LA - eng PT - Journal Article DEP - 20070526 PL - Germany TA - Neurosurg Rev JT - Neurosurgical review JID - 7908181 RN - 0 (Antibodies, Blocking) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 9001-31-4 (Fibrin) RN - 9001-32-5 (Fibrinogen) RN - EC 3.4.21.5 (Thrombin) SB - IM MH - Amputation, Traumatic/pathology MH - Animals MH - Antibodies, Blocking/pharmacology MH - Behavior, Animal/physiology MH - Brain-Derived Neurotrophic Factor/antagonists & inhibitors/*pharmacology MH - Fibrin/pharmacology MH - Fibrinogen/pharmacology MH - Ganglia, Spinal/injuries MH - Male MH - Nerve Regeneration/drug effects MH - Neuroma/pathology MH - Neurons/drug effects/physiology MH - Pain/*physiopathology/psychology MH - Peripheral Nervous System Diseases/*physiopathology/psychology MH - Peripheral Nervous System Neoplasms/pathology MH - Rats MH - Rats, Wistar MH - Sciatic Neuropathy/physiopathology MH - Thrombin/therapeutic use EDAT- 2007/05/29 09:00 MHDA- 2007/07/31 09:00 CRDT- 2007/05/29 09:00 PHST- 2006/12/28 00:00 [received] PHST- 2007/03/04 00:00 [accepted] PHST- 2007/05/29 09:00 [pubmed] PHST- 2007/07/31 09:00 [medline] PHST- 2007/05/29 09:00 [entrez] AID - 10.1007/s10143-007-0085-5 [doi] PST - ppublish SO - Neurosurg Rev. 2007 Jul;30(3):235-43; discussion 243. doi: 10.1007/s10143-007-0085-5. Epub 2007 May 26.