Cited by 129Neuroinflammation and Neurodegeneration MechanismsStress Responses and CortisolTryptophan and brain disorders

The role of IL-6 in neurodevelopment after prenatal stress

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Gumusoglu, Serena B., Fine, Rebecca S., Murray, Samuel J., Bittle, Jada L., Stevens, Hanna E.·2017·Brain, Behavior, and Immunity

Abstract

Prenatal stress exposure is associated with adverse psychiatric outcomes, including autism and ADHD, as well as locomotor and social inhibition and anxiety-like behaviors in animal offspring. Similarly, maternal immune activation also contributes to psychiatric risk and aberrant offspring behavior. The mechanisms underlying these outcomes are not clear. Offspring microglia and the pro-inflammatory cytokine interleukin-6 (IL-6), known to influence microglia, may serve as common mechanisms between prenatal stress and prenatal immune activation. To evaluate the role of prenatal IL-6 in prenatal stress, microglia morphological analyses were conducted at embryonic days 14 (E14), E15, and in adult mice. Offspring microglia and behavior were evaluated after repetitive maternal restraint stress, repetitive maternal IL-6, or maternal IL-6 blockade during stress from E12 onwards. At E14, novel changes in cortical plate embryonic microglia were documented-a greater density of the mutivacuolated morphology. This resulted from either prenatal stress or IL-6 exposure and was prevented by IL-6 blockade during prenatal stress. Prenatal stress also resulted in increased microglia ramification in adult brain, as has been previously shown. As with embryonic microglia, prenatal IL-6 recapitulated prenatal stress-induced changes in adult microglia. Furthermore, prenatal IL-6 was able to recapitulate the delay in GABAergic progenitor migration caused by prenatal stress. However, IL-6 mechanisms were not necessary for this delay, which persisted after prenatal stress despite IL-6 blockade. As we have previously demonstrated, behavioral effects of prenatal stress in offspring, including increased anxiety-like behavior, decreased sociability, and locomotor inhibition, may be related to these GABAergic delays. While adult microglia changes were ameliorated by IL-6 blockade, these behavioral changes were independent of IL-6 mechanisms, similar to GABAergic delays. This and previous work from our laboratory suggests that multiple mechanisms, including GABAergic delays, may underlie prenatal stress-linked deficits.

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Crossref · 10.1016/j.bbi.2017.05.015

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  • Increased levels of IL-6 alone recapitulate aspects of ASD pathophysiology.

    “Importantly, increased levels of IL-6 alone recapitulate aspects of ASD pathophysiology [138, 142, 143].”
  • Such regulation may also be altered by activation of microglia cells under stress conditions including MIA and/or in response to increased levels of IL-6.

    “Such regulation may also be altered by activation of microglia cells under stress conditions including MIA and/or in response to increase levels of IL-6 [142].”

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Research works printed but not linked: 2

  1. McAllister AK Patterson PH 2012 Neuroimmunology in Brain Development and Disease Dev Neurobiol 72 1269 1271 22927111 PMC4357356
  2. Morgan KN Thayer JE Frye CA 1999 Prenatal stress suppresses rat pup ultrasonic vocalization and myoclonic twitching in response to separation Dev Psycho biol 34 205 215 10204096

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Authors
Gumusoglu, S. B., Fine, R. S., Murray, S. J., Bittle, J. L., & Stevens, H. E.
Affiliations
  • University of Iowa (US)
  • Yale University (US)
Corresponding author
Stevens, Hanna E.
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2017-10
Volume
65
Pages
274-283
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2617644144
Cited by
129
References
79
Citations by year
2026: 8 · 2025: 18 · 2024: 15 · 2023: 14 · 2022: 22 · 2021: 15 · 2020: 12 · 2019: 11 · 2018: 14
FWCI
5.05
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (K08MH086812, R25MH077823)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
interleukin-6, prenatal stress, maternal restraint stress, microglia, brain development, maternal immune activation, cortical plate, anxiety-like behavior, sociability, locomotor inhibition, autism spectrum disorder, attention deficit hyperactivity disorder, IL-6 inhibition, microglial morphology
MeSH terms
Animals, Anxiety, Behavior, Animal, Brain, Disease Models, Animal, Female, Male, Pregnancy, Prenatal Exposure Delayed Effects, Stress, Psychological, Interleukin-6, Cytokines, Microglia, GABA Agents, Mice, GABAergic Neurons

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