PMID- 23136965 OWN - NLM STAT- MEDLINE DCOM- 20140924 LR - 20220331 IS - 1525-1403 (Electronic) IS - 1094-7159 (Linking) VI - 16 IP - 6 DP - 2013 Nov-Dec TI - Cerebrospinal fluid levels of vascular endothelial growth factor correlate with reported pain and are reduced by spinal cord stimulation in patients with failed back surgery syndrome. PG - 519-22; discussion 522 LID - 10.1111/j.1525-1403.2012.00527.x [doi] AB - OBJECTIVES: Spinal cord stimulation (SCS) is an efficacious therapy for chronic neuropathic pain whose precise mechanism of action is unclear. Mediators produced by glial and immune cells are now believed to modulate neuronal transmission and promote chronic neuropathic pain. We postulated a relationship between cerebrospinal fluid (CSF) concentrations of neuroimmune mediators and SCS. MATERIALS AND METHODS: We measured CSF concentrations of the chemokine, monocyte chemotactic protein-1 (MCP-1), and the growth factors, brain-derived neurotrophic factor (BDNF), and vascular endothelial growth factor (VEGF) and tested for relationships with stimulation parameters and clinical response in nine patients with failed back surgery syndrome (FBSS). RESULTS: Patients with FBSS had higher CSF concentrations of BDNF (p = 0.01) and MCP-1 (p = 0.0001) than matched controls. CSF concentrations of BDNF and VEGF correlated with reported pain (p = 0.04). Five minutes of SCS resulted in a reduction in median VEGF concentrations (p = 0.01). CONCLUSIONS: Patients with FBSS have altered CSF levels of BDNF and MCP-1. CSF VEGF correlates with pain and is reduced by SCS. This may offer novel insights into both the mechanism of action of SCS in FBSS and the variation in clinical response that may be encountered. CI - (c) 2012 International Neuromodulation Society. FAU - McCarthy, Kevin F AU - McCarthy KF AD - Department of Pain Medicine, St James's Hospital, Dublin, Ireland. FAU - Connor, Thomas J AU - Connor TJ FAU - McCrory, Connail AU - McCrory C LA - eng PT - Journal Article DEP - 20121108 PL - United States TA - Neuromodulation JT - Neuromodulation : journal of the International Neuromodulation Society JID - 9804159 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Vascular Endothelial Growth Factor A) SB - IM MH - Adult MH - Aged MH - Brain-Derived Neurotrophic Factor/cerebrospinal fluid MH - Chemokine CCL2/cerebrospinal fluid MH - Chemokines/cerebrospinal fluid MH - Failed Back Surgery Syndrome/*cerebrospinal fluid/complications/*therapy MH - Female MH - Humans MH - Male MH - Middle Aged MH - Neuralgia/*cerebrospinal fluid/etiology/*therapy MH - Pain Measurement MH - *Spinal Cord Stimulation MH - Treatment Outcome MH - Vascular Endothelial Growth Factor A/*cerebrospinal fluid OTO - NOTNLM OT - basic science OT - failed back surgery syndrome OT - mechanisms of action OT - nonrandomized study OT - prospective OT - spinal cord stimulation EDAT- 2012/11/10 06:00 MHDA- 2014/09/25 06:00 CRDT- 2012/11/10 06:00 PHST- 2012/05/20 00:00 [received] PHST- 2012/08/15 00:00 [revised] PHST- 2012/09/13 00:00 [accepted] PHST- 2012/11/10 06:00 [entrez] PHST- 2012/11/10 06:00 [pubmed] PHST- 2014/09/25 06:00 [medline] AID - S1094-7159(14)60006-4 [pii] AID - 10.1111/j.1525-1403.2012.00527.x [doi] PST - ppublish SO - Neuromodulation. 2013 Nov-Dec;16(6):519-22; discussion 522. doi: 10.1111/j.1525-1403.2012.00527.x. Epub 2012 Nov 8.