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Faster speed of onset of the depressive episode is associated with lower cytokine serum levels (IL-2, -4, -6, -10, TNF-α and IFN-γ) in patients with major depression

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Pichit Buspavanich, Mazda Adli, Hubertus Himmerich, Maximilian Berger, Marlene Busche, Peter Schlattmann, Sandra Bopp, Tom Bschor, Christoph Richter, Bruno Steinacher, Christian Stoppel, Claudia Hindinger, Saskia Meyer, Kai Hoffmann, Thomas Stamm, Alexander Gabriel, Angela Merkl, Franziska Goerke-Arndt, Stephan Köhler, Phillip Sterzer & 6 more Andreas Heinz, Joachim Behr, Hajar Fakhri, Florian Lang, Undine E. Lang, Roland Ricken

Original languageEnglish
Pages (from-to)287-292
Number of pages6
JournalJournal of psychiatric research
Volume141
DOIs
PublishedSep 2021

Bibliographical note

Funding Information: The study was funded by resources of the Mood Disorders Research Group at Charité – Universitätsmedizin Medicine Berlin , Department of Psychiatry and Psychotherapy, Campus Mitte . Publisher Copyright: © 2021 Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

King's Authors

Abstract

Introduction: Cytokines might play a key role in the pathophysiology of major depressive disorder (MDD). The speed of onset of depressive episodes has been discussed as an important clinical parameter in MDD. The aim of this study was to investigate a potential influence of the speed of onset of the depressive episode on cytokine serum levels. Method: Serum level of the cytokines interleukin (IL)-2, IL-4, IL-6, IL-8, IL-10, tumor necrosis factor alpha (TNF-α), interferon-gamma (IFN-γ) granulocyte and monocyte colony stimulating factor (GM-CSF) were measured in a total of 92 patients with MDD that did not respond to at least one previous antidepressant treatment. Patients were retrospectively divided in two groups: Faster (≤4 weeks) and slower (>4 weeks) onset of the depressive episode defined as the time passing from the first depressive symptoms to a full-blown depressive episode by using information from a clinical interview. Results: We found significantly lower serum levels of IL-2, IL-4, IL-6, IL-10, TNF-α and IFN-γ in patients with a faster onset compared to patients with a slower onset of the depressive episodes. Furthermore, lower cytokine serum levels of IL-2, IL-8, IL-10 and IFN-γ were found in patients with a shorter duration (less than 6 months) compared to a longer duration (6–24 months) of the current depressive episode. This effect on cytokines was independent from the effect of the speed of onset of the depressive episode. Conclusions: Patients with faster onset of the depressive episode might represent a biological subtype of MDD with lower serum levels of IL-2, IL-4, IL-6, IL-10, TNF-α and IFN-γ.

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