PMID- 23267031 OWN - NLM STAT- MEDLINE DCOM- 20130225 LR - 20220408 IS - 1526-632X (Electronic) IS - 0028-3878 (Print) IS - 0028-3878 (Linking) VI - 80 IP - 1 DP - 2013 Jan 1 TI - Inflammation in complex regional pain syndrome: a systematic review and meta-analysis. PG - 106-17 LID - 10.1212/WNL.0b013e31827b1aa1 [doi] AB - OBJECTIVES: We conducted a systematic review of the literature with meta-analysis to determine whether complex regional pain syndrome (CRPS) is associated with a specific inflammatory profile and whether this is dependent on the duration of the condition. METHODS: Comprehensive searches of the literature using MEDLINE, Embase, Scopus, Web of Science, and reference lists from published reviews identified articles that measured inflammatory factors in CRPS. Two independent investigators screened titles and abstracts, and performed data extraction and risk of bias assessments. Studies were subgrouped by medium (blood, blister fluid, and CSF) and duration (acute and chronic CRPS). Where possible, meta-analyses of inflammatory factor concentrations were performed and pooled effect sizes were calculated using random-effects models. RESULTS: Twenty-two studies were included in the systematic review and 15 in the meta-analysis. In acute CRPS, the concentrations of interleukin (IL)-8 and soluble tumor necrosis factor receptors I (sTNF-RI) and II (sTNF-RII) were significantly increased in blood. In chronic CRPS, significant increases were found in 1) TNFalpha, bradykinin, sIL-1RI, IL-1Ra, IL-2, sIL-2Ra, IL-4, IL-7, interferon-gamma, monocyte chemoattractant protein-1 (MCP-1), and sRAGE (soluble receptor for advanced glycation end products) in blood; 2) IL-1Ra, MCP-1, MIP-1beta, and IL-6 in blister fluid; and 3) IL-1beta and IL-6 in CSF. Chronic CRPS was also associated with significantly decreased 1) substance P, sE-selectin, sL-selectin, sP-selectin, and sGP130 in blood; and 2) soluble intercellular adhesion molecule-1 (sICAM-1) in CSF. Most studies failed to meet 3 or more of our quality criteria. CONCLUSION: CRPS is associated with the presence of a proinflammatory state in the blood, blister fluid, and CSF. Different inflammatory profiles were found for acute and chronic cases. FAU - Parkitny, Luke AU - Parkitny L AD - Neuroscience Research Australia, University of New South Wales, Sydney, Australia. FAU - McAuley, James H AU - McAuley JH FAU - Di Pietro, Flavia AU - Di Pietro F FAU - Stanton, Tasha R AU - Stanton TR FAU - O'Connell, Neil E AU - O'Connell NE FAU - Marinus, Johan AU - Marinus J FAU - van Hilten, Jacobus J AU - van Hilten JJ FAU - Moseley, G Lorimer AU - Moseley GL LA - eng GR - ID 223354/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PT - Review PT - Systematic Review PL - United States TA - Neurology JT - Neurology JID - 0401060 RN - 0 (Inflammation Mediators) SB - IM MH - Acute Pain/blood/cerebrospinal fluid/diagnosis MH - Blister/metabolism MH - Chronic Pain/blood/cerebrospinal fluid/diagnosis MH - Complex Regional Pain Syndromes/blood/cerebrospinal fluid/*diagnosis MH - Humans MH - Inflammation Mediators/*metabolism PMC - PMC3589200 EDAT- 2012/12/26 06:00 MHDA- 2013/02/26 06:00 PMCR- 2013/07/01 CRDT- 2012/12/26 06:00 PHST- 2012/12/26 06:00 [entrez] PHST- 2012/12/26 06:00 [pubmed] PHST- 2013/02/26 06:00 [medline] PHST- 2013/07/01 00:00 [pmc-release] AID - 80/1/106 [pii] AID - WNL204537 [pii] AID - 10.1212/WNL.0b013e31827b1aa1 [doi] PST - ppublish SO - Neurology. 2013 Jan 1;80(1):106-17. doi: 10.1212/WNL.0b013e31827b1aa1.