PMID- 25005881 OWN - NLM STAT- MEDLINE DCOM- 20150312 LR - 20220410 IS - 1744-8069 (Electronic) IS - 1744-8069 (Linking) VI - 10 DP - 2014 Jul 8 TI - Higher serum S100B and BDNF levels are correlated with a lower pressure-pain threshold in fibromyalgia. PG - 46 LID - 10.1186/1744-8069-10-46 [doi] AB - BACKGROUND: Fibromyalgia (FM) is conceptualized as a central sensitization (CS) condition, that presents high serum brain-derived neurotrophic factor (BDNF) and neuroglia activation. Although the S100B protein regulates neuroglia functions, it has been traditionally used as a proxy of central nervous system damage. However, neither BDNF nor S100B association with the clinical picture of FM has been elucidated. To explore their association with the pressure-pain threshold (PPT) in FM, we performed a cross-sectional study, including 56 females with confirmed FM aged 18-65 years. Linear regression models were used to adjust for potential confounding factors between serum BDNF, S100B and PPT. RESULTS: Serum BDNF and S100B were correlated (Spearman's Rho = 0.29). Serum BDNF (log) and S100B (log) were correlated with the PPT (log) (Partial eta2 = 0.129, P = 0.012 for the BDNF (log), and Partial eta2 = 0.105, P = 0.025 for the S100B (log)). Serum BDNF (log) was inversely associated with PPT (log) (beta = -1.01, SE = 0.41), age (beta = -0.02, SE = 0.15) and obsessive compulsive disorder (beta = -0.36, SE = 0.15), while serum S100B (log) was inversely associated with PPT (log) (beta = -1.38, SE = 0.50), only. CONCLUSIONS: Both neuroglia key mediators in the CS process were inversely correlated with the PPT. Serum assessment of BDNF and S100B deserve further study to determine its potential as a proxy for the CS spectrum in FM. FAU - Zanette, Simone Azevedo AU - Zanette SA FAU - Dussan-Sarria, Jairo Alberto AU - Dussan-Sarria JA FAU - Souza, Andressa AU - Souza A FAU - Deitos, Alicia AU - Deitos A FAU - Torres, Iraci Lucena Silva AU - Torres IL FAU - Caumo, Wolnei AU - Caumo W AD - Post Graduate Program in Medical Sciences, UFRGS, Porto Alegre, Brazil. caumo@cpovo.net. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140708 PL - United States TA - Mol Pain JT - Molecular pain JID - 101242662 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (S100 Calcium Binding Protein beta Subunit) RN - 0 (S100B protein, human) SB - IM MH - Brain-Derived Neurotrophic Factor/*blood MH - Cross-Sectional Studies MH - Female MH - Fibromyalgia/*blood/*physiopathology MH - Humans MH - Linear Models MH - Male MH - Pain Threshold/*physiology MH - Pressure/*adverse effects MH - Retrospective Studies MH - S100 Calcium Binding Protein beta Subunit/*blood PMC - PMC4094546 EDAT- 2014/07/10 06:00 MHDA- 2015/03/13 06:00 PMCR- 2014/07/08 CRDT- 2014/07/10 06:00 PHST- 2014/03/10 00:00 [received] PHST- 2014/07/03 00:00 [accepted] PHST- 2014/07/10 06:00 [entrez] PHST- 2014/07/10 06:00 [pubmed] PHST- 2015/03/13 06:00 [medline] PHST- 2014/07/08 00:00 [pmc-release] AID - 1744-8069-10-46 [pii] AID - 10.1186/1744-8069-10-46 [doi] PST - epublish SO - Mol Pain. 2014 Jul 8;10:46. doi: 10.1186/1744-8069-10-46.