Cited by 620Tryptophan and brain disordersStress Responses and CortisolNeuroinflammation and Neurodegeneration Mechanisms

The role of pro-inflammatory cytokines in neuroinflammation, neurogenesis and the neuroendocrine system in major depression

Kim, Yong-Ku, Na, Kyoung-Sae, Myint, Aye-Mu, Leonard, Brian E.·2016·Progress in Neuro-Psychopharmacology and Biological Psychiatry

Abstract

Cytokines are pleiotropic molecules with important roles in inflammatory responses. Pro-inflammatory cytokines and neuroinflammation are important not only in inflammatory responses but also in neurogenesis and neuroprotection. Sustained stress and the subsequent release of pro-inflammatory cytokines lead to chronic neuroinflammation, which contributes to depression. Hippocampal glucocorticoid receptors (GRs) and the associated hypothalamus-pituitary-adrenal (HPA) axis have close interactions with pro-inflammatory cytokines and neuroinflammation. Elevated pro-inflammatory cytokine levels and GR functional resistance are among the most widely investigated factors in the pathophysiology of depression. These two major components create a vicious cycle. In brief, chronic neuroinflammation inhibits GR function, which in turn exacerbates pro-inflammatory cytokine activity and aggravates chronic neuroinflammation. On the other hand, neuroinflammation causes an imbalance between oxidative stress and the anti-oxidant system, which is also associated with depression. Although current evidence strongly suggests that cytokines and GRs have important roles in depression, they are essential components of a whole system of inflammatory and endocrine interactions, rather than playing independent parts. Despite the evidence that a dysfunctional immune and endocrine system contributes to the pathophysiology of depression, much research remains to be undertaken to clarify the cause and effect relationship between depression and neuroinflammation.

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Crossref · 10.1016/j.pnpbp.2015.06.008

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  • Alterations in peripheral inflammatory profile are observed in several neurodevelopmental disorders including ADHD.

    “Alterations in the peripheral inflammatory profile are observed in several neurodevelopmental disorders (Kim et al., 2016; Landaas et al., 2010; Monji et al., 2013; Vargas et al., 2005), including ADHD”
  • A number of neuropsychiatric disorders including ASD, schizophrenia, depression, anxiety, and bipolar disorder have been associated with exposure to increased peripheral and/or central inflammatory response during perinatal development.

    “a number of neuropsychiatric disorders including ASD (Vargas et al., 2005), schizophrenia (Monji et al., 2013), depression (Kim et al., 2016), anxiety, and bipolar disorder (Landaas et al., 2010) have also been associated with exposure to an increased peripheral and/or central inflammatory response during perinatal development.”

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Authors
Kim, Y.-K., Na, K.-S., Myint, A.-M., & Leonard, B. E.
Affiliations
  • Korea University (KR)
  • Gachon University Gil Medical Center (KR)
  • Ludwig-Maximilians-Universität München (DE)
  • Ollscoil na Gaillimhe – University of Galway (IE)
Corresponding author
Na, Kyoung-Sae
Venue
Progress in Neuro-Psychopharmacology and Biological Psychiatry
Publisher
Elsevier BV
Published
2016-01
Volume
64
Pages
277-284
ISSN
0278-5846 (ISSN-L)
OpenAlex
W2147242210
Cited by
620
References
36
Citations by year
2026: 28 · 2025: 55 · 2024: 71 · 2023: 75 · 2022: 79 · 2021: 86 · 2020: 63 · 2019: 50 · 2018: 50 · 2017: 42 · 2016: 18 · 2015: 3
FWCI
2.12
Type
journal article
Language
en
Open access
closed
Locations
  • Progress in Neuro-Psychopharmacology and Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
inflammatory cytokines, neuroinflammation, major depressive disorder, neurogenesis, neuroendocrine system, glucocorticoid receptor, hypothalamic-pituitary-adrenal axis, chronic stress, glucocorticoid resistance, oxidative stress, endocrine-immune interaction, depression pathophysiology
MeSH terms
Animals, Depressive Disorder, Major, Major Depressive Disorder, Humans, Neurosecretory Systems, Neuroimmunomodulation, Cytokines, Oxidative Stress, Neurogenesis

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