Cited by 25Tryptophan and brain disordersTreatment of Major DepressionNeuroinflammation and Neurodegeneration Mechanisms

Astrocytic TNFα regulates the behavioral response to antidepressants

Duseja, Rachna, Heir, Renu, Lewitus, Gil M., Altimimi, Haider F., Stellwagen, David·2015·Brain Behavior and Immunity

Abstract

Recent studies have suggested that cytokines, and in particular tumor necrosis factor alpha (TNFα), have a role in modulating antidepressant efficacy. To directly test this idea, we compared the response of TNFα(-/-) mice and astrocyte-specific TNFα(-/-) mice to the antidepressants fluoxetine and desipramine. Using standard behavior models for measuring antidepressant efficacy, the forced swim test (FST) and tail suspension test (TST), we determined that TNFα(-/-) mice were essentially normal in basal behavior in the FST and TST. However, TNFα(-/-) mice showed no behavioral response to a standard dose of chronic antidepressant treatment, in sharp contrast to wildtype mice. Similar results were seen with acute antidepressant treatment, but TNFα(-/-) mice did respond to a very high-dose acute antidepressant treatment. We also assessed in vitro and in vivo effects of fluoxetine on TNFα expression. Glia responded to serotonin in vitro and fluoxetine in vivo by upregulating TNFα mRNA. Consistent with this source of TNFα, mice with an astrocyte-specific deletion of TNFα also did not respond to standard chronic antidepressant treatment. These data suggest that astrocytic TNFα is important to the sensitivity of the behavioral response to administration of antidepressants.

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Crossref · 10.1016/j.bbi.2014.09.012

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  • Suppression of microglia and astrocyte reactivity is implicated in the response to antidepressant therapies.

    “Consistently, suppression of microglia [80] and astrocyte [81] reactivity is implicated in the response to antidepressant therapies.”

    From The menace of obesity to depression and anxiety prevalence (2022) · cites this paper as [81]

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Authors
Duseja, R., Heir, R., Lewitus, G. M., Altimimi, H. F., & Stellwagen, D.
Affiliations
McGill University Health Centre (CA)
Corresponding author
Stellwagen, David
Venue
Brain Behavior and Immunity
Publisher
Elsevier BV
Published
2015-02
Volume
44
Pages
187-194
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2030862564
Cited by
25
References
63
Citations by year
2026: 6 · 2025: 2 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 2 · 2016: 5
FWCI
0.71
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Canadian Institute of Health Research
  • NARSAD Young Investigator
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
TNF-α, astrocytes, antidepressant response, fluoxetine, desipramine, forced swim test, tail suspension test, serotonin, antidepressant sensitivity
MeSH terms
Animals, Antidepressive Agents, Astrocytes, Behavior, Animal, Desipramine, Fluoxetine, Mice, Inbred C57BL, Motor Activity, Swimming, Tumor Necrosis Factor-alpha, Mice, Knockout, Hindlimb Suspension, Mice

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