Cited by 147Tryptophan and brain disordersPsoriasis: Treatment and PathogenesisNeuroinflammation and Neurodegeneration Mechanisms

IL-17A causes depression-like symptoms via NFκB and p38MAPK signaling pathways in mice: Implications for psoriasis associated depression

Nadeem, Ahmed, Ahmad, Sheikh F., Al-Harbi, Naif O., Fardan, Ali S., El-Sherbeeny, Ahmed M., Ibrahim, Khalid E., Attia, Sabry M.·2017·Cytokine

Abstract

Psoriasis has been shown to be associated with an increased prevalence of comorbid major depression. IL-17A plays an important role in both depression and psoriasis. IL-17A has been shown to be elevated in systemic circulation of psoriatic patients. IL-17A released from different immune cells during psoriasis may be responsible for the development of neuropsychiatric symptoms associated with depression. Therefore, this study explored the association of systemic IL-17A with depression. The present study utilized imiquimod model of psoriatic inflammation as well as IL-17A administration in mice to investigate the effect of IL-17A on depression-like behavior. Psoriatic inflammation led to enhanced IL-17A expression in peripheral immune cells of both innate and adaptive origin. This was associated with increased NFκB/p38MAPK signaling and inflammatory mediators in different brain regions, and depression-like symptoms (as reflected by sucrose preference and tail suspension tests). The role of IL-17A was further confirmed by administering it alone for ten days, followed by assessment of the same parameters. IL-17A administration produced effects similar to psoriasis-like inflammation on neurobehavior and NFκB/p38MAPK pathways. Moreover, both NFκB and p38MAPK inhibitors led to attenuation in IL-17A associated with depression-like behavior via reduction in inflammatory mediators, such as MCP-1, iNOS, IL-6, and CXCL-2. Furthermore, anti-IL17A antibody also led to a reduction in imiquimod-induced depression-like symptoms, as well as NFκB/p38MAPK signaling. The present study shows that IL-17A plays an important role in comorbid depression associated with psoriatic inflammation, where both NFκB and p38MAPK pathways play significant roles via upregulation of inflammatory mediators in the brain.

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Crossref · 10.1016/j.cyto.2017.05.018

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Authors
Nadeem, A., Ahmad, S. F., Al-Harbi, N. O., Fardan, A. S., El-Sherbeeny, A. M., Ibrahim, K. E., & Attia, S. M.
Affiliations
King Saud University (SA)
Corresponding author
Nadeem, Ahmed
Venue
Cytokine
Publisher
Elsevier BV
Published
2017-09
Volume
97
Pages
14-24
ISSN
1043-4666 (ISSN-L)
OpenAlex
W2617690685
Cited by
147
References
54
Citations by year
2026: 10 · 2025: 18 · 2024: 10 · 2023: 31 · 2022: 24 · 2021: 18 · 2020: 14 · 2019: 6 · 2018: 14 · 2017: 2
FWCI
3.27
Type
journal article
Language
en
Open access
closed
Locations
  • Cytokine (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deanship of Scientific Research at King Saud University (RG-1438-019)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
IL-17A, depression-like behavior, psoriasis, NF-κB signaling, p38 MAPK signaling, neuroinflammation, anti-IL-17A antibody, comorbid depression
MeSH terms
Imiquimod, Aminoquinolines, Animals, Brain, Depression, Major Depressive Disorder, Depressive Disorder, Major, Disease Models, Animal, Humans, Inflammation, Psoriasis, NF-kappa B, Interleukin-17, MAP Kinase Signaling System, p38 Mitogen-Activated Protein Kinases, Mice

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