Cited by 204Tryptophan and brain disordersNeuroinflammation and Neurodegeneration MechanismsTreatment of Major Depression

Sodium Butyrate Abolishes Lipopolysaccharide-Induced Depression-like Behaviors and Hippocampal Microglial Activation in Mice

Yamawaki, Yosuke, Yoshioka, Norika, Nozaki, Kanako, Ito, Hikaru, Oda, Keisuke, Harada, Kana, Shirawachi, Satomi, Asano, Satoshi +4 more·2018·Brain Research

Abstract

Patients with major depressive disorder have elevated peripheral inflammation; the degree of this increase correlates with the severity of the disorder. Chronic psychological stress increases pro-inflammatory cytokines and promotes microglial activation, leading to stress vulnerability. Epigenetics, including DNA methylation and histone modification, are also related to the pathophysiology of major depressive disorder. Sodium butyrate (SB), a histone deacetylase inhibitor, exerts an antidepressant effect by altering gene expression in the hippocampus. In this study, we investigated whether lipopolysaccharide (LPS)-induced depressive-like behaviors in mice are affected by the repeated treatment with SB. Intraperitoneal injection of LPS (5 mg/kg) induced cytokines and ionized calcium-binding adaptor molecule 1(Iba1), a marker of microglial activation, in the hippocampus. It also increased the immobility time in a forced swim test, without changing locomotion. Repeated treatment with SB reduced LPS-induced alterations. These findings suggested that epigenetic regulation exist in hippocampal microglial activation, and is involved in depressive-like behaviors associated with neuro-inflammation. Further, using cDNA microarray analyses, we examined whether LPS and SB treatment affected the microglial gene profiles. Our results indicated 64 overlapping genes, between LPS-increased genes and SB-decreased genes. Among these genes, EF hand calcium binding domain 1 was a particularly distinct candidate gene. Altogether, our findings indicated that microglial activation mediated through epigenetic regulation may be involved in depressive-like behaviors. In addition, we demonstrated the effect of SB on gene information in hippocampal microglia under neuroinflammatory conditions.

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Crossref · 10.1016/j.brainres.2017.12.004

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Authors
Yamawaki, Y., Yoshioka, N., Nozaki, K., Ito, H., Oda, K., Harada, K., Shirawachi, S., Asano, S., Aizawa, H., Yamawaki, S., Kanematsu, T., & Akagi, H.
Affiliations
  • Hiroshima University (JP)
  • Hiroshima International University (JP)
Corresponding author
Yamawaki, Yosuke
Venue
Brain Research
Publisher
Elsevier BV
Published
2018-02
Volume
1680
Pages
13-38
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2774466845
Cited by
204
References
53
Citations by year
2026: 13 · 2025: 25 · 2024: 28 · 2023: 35 · 2022: 25 · 2021: 30 · 2020: 25 · 2019: 17 · 2018: 6
FWCI
4.36
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • JSPS KAKENHI (25861036, 15K19731, 17K11670)
  • Strategic Research Program for Brain Sciences from Japan Agency for Medical Research and Development, AMED (16dm0107093h0001)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
sodium butyrate, lipopolysaccharide, depression-like behavior, neuroinflammation, histone deacetylase inhibition, epigenetic regulation, Iba1, inflammatory cytokines, major depressive disorder, microglial gene expression
MeSH terms
Animals, Antidepressive Agents, Calcium-Binding Proteins, Depression, Disease Models, Animal, Dose-Response Relationship, Drug, Exploratory Behavior, Hippocampus, Histones, Lipopolysaccharides, Mice, Inbred C57BL, Microfilament Proteins, RNA, Messenger, Swimming, Gene Expression, Cytokines, Microglia, Butyric Acid, Oligonucleotide Array Sequence Analysis, Mice

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