PMID- 22515203 OWN - NLM STAT- MEDLINE DCOM- 20121001 LR - 20120521 IS - 1029-2292 (Electronic) IS - 0897-7194 (Linking) VI - 30 IP - 3 DP - 2012 Jun TI - Gastrocnemius-derived BDNF promotes motor function recovery in spinal cord transected rats. PG - 167-75 LID - 10.3109/08977194.2012.678842 [doi] AB - This study evaluated the role of gastrocnemius-derived brain-derived neurotrophic factor (BDNF) and possible mechanism in motor improvement in T10 spinal cord transection (SCT) rats. There was complete paralysis in hindlimbs immediately after SCT, followed by partial functional restoration with time going. The level of BDNF but not its mRNA gradually increased in caudal stump after SCT, whereas a significant increase in both BDNF and its mRNA was simultaneously seen in gastrocnemius. Injection of BDNF antibody into the gastrocnemius significantly decreased hindlimb locomotor function, downregulated the level of BDNF and its mRNA together with extracellular signal-regulated kinase 1/2 (Erk1/2). Moreover, ventral root ligation led to decrease both BDNF and Erk in caudal stump, indicating BDNF transportation from gastrocnemius into the spinal cord. We concluded that gastrocnemius-derived BDNF reduced motor functional deficits in SCT rats through Erk signaling pathway. These novel findings suggested the usage of BDNF in muscle for the treatment of spinal cord injury in clinic. FAU - Gao, Li AU - Gao L AD - Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, People's Republic of China. FAU - Li, Li-Hong AU - Li LH FAU - Xing, Ru-Xin AU - Xing RX FAU - Ou, Shan AU - Ou S FAU - Liu, Guo-Dong AU - Liu GD FAU - Wang, Yan-Ping AU - Wang YP FAU - Zhang, Hua AU - Zhang H FAU - Gao, Guo-Dong AU - Gao GD FAU - Wang, Ting-Hua AU - Wang TH LA - eng PT - Journal Article DEP - 20120419 PL - England TA - Growth Factors JT - Growth factors (Chur, Switzerland) JID - 9000468 RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism/pharmacology/*therapeutic use MH - Female MH - Hindlimb/drug effects/*physiology MH - MAP Kinase Signaling System MH - Motor Activity/drug effects/*physiology MH - Muscle, Skeletal/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Spinal Cord/*metabolism MH - Spinal Cord Injuries/drug therapy EDAT- 2012/04/21 06:00 MHDA- 2012/10/02 06:00 CRDT- 2012/04/21 06:00 PHST- 2012/04/21 06:00 [entrez] PHST- 2012/04/21 06:00 [pubmed] PHST- 2012/10/02 06:00 [medline] AID - 10.3109/08977194.2012.678842 [doi] PST - ppublish SO - Growth Factors. 2012 Jun;30(3):167-75. doi: 10.3109/08977194.2012.678842. Epub 2012 Apr 19.