Journal
PSYCHIATRY AND CLINICAL NEUROSCIENCES
Volume 73, Issue 10, Pages 628-635Publisher
WILEY
DOI: 10.1111/pcn.12906
Keywords
biomarkers; ECT; electroconvulsive therapy; immune system; inflammation
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Funding
- Instituto de Salud Carlos III, Fondo Europeo de Desarrollo Regional, Union Europea, 'Una manera de hacer Europa', MINECO [SAF2016/75500-R]
- Generalitat de Catalunya [2014SGR441, 2014SGR398]
- Secretaria d'Universitats i Recerca del Departament d'Economia i Coneixement [2014SGR441, 2014SGR398]
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Aim There is a great interest in the role of the immune system and the inflammatory balance as key mechanisms involved in the pathophysiology of severe mental disorders. Previous studies have indicated that electroconvulsive therapy (ECT) produces changes in certain inflammatory mediators or in the immune system response. This study aimed to explore the effects of ECT on the nuclear transcription factor kappa B (NF kappa B) pathway, a main regulatory pathway of the inflammatory/immune response. Methods Thirty subjects with a severe mental disorder receiving treatment with ECT in our center were included. Thirteen systemic biomarkers related to the NF kappa B pathway were analyzed right before and 2 h after a single ECT session. Results An ECT session significantly decreased the expression of NF kappa B (P = 0.035) and of the inducible nitric oxide synthase (P = 0.012), and the plasma levels of nitrites (P = 0.027), prostaglandin E-2 (P = 0.049), and 15-deoxy-PGJ(2) (P < 0.001). Decrease in plasmatic levels of nitrites was greater in females than in males (P = 0.021). A positive correlation between the ECT stimulus load and changes in the expression of NFkB was found (P = 0.036). Thiobarbituric acid reactive substance levels were decreased in treatment responders and increased in non-responders (P = 0.047). Conclusion Our study shows the effects that a single session of ECT produces on a canonical regulatory pathway of the inflammatory/innate immune system and the inflammatory balance. These biomarkers could be useful as treatment response targets and could help to clarify the biological basis of ECT action. These findings warrant greater attention in future investigations and in the translational significance of these data.
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