Evolution of inflammatory dysregulation and oxidative stress in patients with first episode of mania

• Published in: European psychiatry Vol. 33; no. S1; p. S331
• Main Authors: García, S, López Peña, P, Zorrilla, I, García-Alocen, A, Martínez-Cengotitabengoa, M, Bermúdez-Ampudia, C, Mac-Dowell, K.S, Rodríguez, S, Leza, J.C, González-Pinto, A
• Format: Journal Article
• Language: English
• Published: Elsevier Masson SAS 01.03.2016
• Subjects: Internal Medicine; Psychiatry
• ISSN: 0924-9338; 1778-3585
• DOI: 10.1016/j.eurpsy.2016.01.1152

Introduction Recent studies have focused on the imbalance in inflammatory and antioxidant pathways as possible causes of the underlying neurodegenerative processes in bipolar disorder. Thus, the study of these pathways in first episodes of mania (FEM) can increase knowledge about this issue. Aim To compare plasma concentrations of pro-inflammatory (MCP-1, PGE2, TNFα) and oxidative parameters (TAS, NO2 and TBARS) between controls and FEM patients and to analyze the evolution of these parameters in patients from baseline to 6 months assessment time. Methods This study included 44 FEM patients and 79 healthy controls, aged 18 to 40. Blood samples were available for controls at baseline and for patients at baseline and 6 months after. TAS and TBARS were measured using non-EIA assay kits, N02 was measured with Griess method and PGE2, MCP-1 and TNFα with ELISA kits. Results At baseline, TAS was significantly lower in patients than in controls and TBARS, MCP-1 and TNFα were significantly higher in patients. Among patients, TAS and MCP1 were lower at 6 months than at the illness onset and PGE2 and NO2 were significantly higher than at baseline. Conclusion Patients presented an increased oxidative damage and also a higher activation of pro-inflammatory pathways than healthy controls at baseline. After 6 months their level of oxidative stress continue increased. Pro-inflammatory parameters decreased overtime (MCP-1 and TNF α) but PGE2, increased surprisingly. This can be due to the fact that antipsychotics are not able to completely reverse baseline inflammation.