Cited by 79Treatment of Major DepressionHistone Deacetylase Inhibitors ResearchNeurotransmitter Receptor Influence on Behavior

Hippocampal HDAC4 Contributes to Postnatal Fluoxetine-Evoked Depression-Like Behavior

Open access
Sarkar, Ambalika, Chachra, Parul, Kennedy, Pamela, Pena, Catherine J, Desouza, Lynette A, Nestler, Eric J, Vaidya, Vidita A·2014·Neuropsychopharmacology

Abstract

Fluoxetine treatment in adulthood evokes antidepressant and anxiolytic responses. Paradoxically, postnatal fluoxetine (PNFlx) induces persistent depression- and anxiety-like behaviors. The mechanistic underpinnings of this paradox remain poorly understood. Here, we examined specific molecular changes in the rat hippocampus that accompany perturbed emotionality observed across life following PNFlx. PNFlx-induced hippocampal gene regulation observed in microarray and quantitative PCR studies indicate functional enrichment of genes involved in response to organic substances, protein kinase pathways, DNA binding, and transcriptional repression. We noted specific transcripts (Hdac4, mammalian target of rapamycin (mTOR), Gnai1, protein kinase C gamma (Prkcc), and hyperpolarization-activated cyclic nucleotide-gated channel 1 (Hcn1)) that were consistently dysregulated across life, and selectively influenced by postnatal, but not adult, fluoxetine. Increased histone deacetylase-4 (HDAC4) recruitment, accompanied by decreased activating histone acetylation marks at the mTOR and Gnai1 promoters, indicate a role for HDAC4 in PNFlx-mediated gene dysregulation. Strikingly, coadministration of the HDAC inhibitor sodium butyrate with PNFlx prevented the dysregulation of Hdac4 and mTOR, and the emergence of depression- and anxiety-like behavior. Importantly, we also find that retreatment of PNFlx animals with fluoxetine in adulthood reversed the increased Hdac4 expression, prevented HDAC4 recruitment to the mTOR and Gnai1 promoters, and attenuated the decline in mTOR and Gnai1 expression, coincident with normalization of PNFlx-evoked depression- and anxiety-like behavior. Further, we show that viral-mediated hippocampal overexpression of Hdac4 was sufficient to induce depression-, but not anxiety-, like behavior in adulthood. Our results highlight the unique nature of molecular signatures evoked by PNFlx, and implicate HDAC4 in the dysregulated gene expression and emergence of perturbed emotionality following fluoxetine exposure in early life.

Integrity signals

Registry

Crossref · 10.1038/npp.2014.73

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Sarkar, A., Chachra, P., Kennedy, P., Pena, C. J., Desouza, L. A., Nestler, E. J., & Vaidya, V. A.
Affiliations
  • Tata Institute of Fundamental Research (IN)
  • Icahn School of Medicine at Mount Sinai (US)
Corresponding author
Vaidya, Vidita A
Venue
Neuropsychopharmacology
Published
2014-03-25
Volume
39
Issue
9
Pages
2221-2232
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2023316390
Cited by
79
References
52
Citations by year
2026: 3 · 2025: 7 · 2024: 10 · 2023: 2 · 2022: 7 · 2021: 7 · 2020: 9 · 2019: 4 · 2018: 5 · 2017: 9 · 2016: 6 · 2015: 6 · 2014: 4
FWCI
6.05
Type
journal article
Language
en
Open access
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Tata Institute of Fundamental Research
  • University of Queensland
  • Indian Institute of Science Education and Research Mohali
  • U.S. Public Health Service (NIHDK096139)
  • National Institute of Mental Health (P50MH096890, R01MH051399)
  • National Institute of Diabetes and Digestive and Kidney Diseases (NIH-DK21397)
  • National Institute of Neurological Disorders and Stroke (F31NS084633)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
fluoxetine, depression-like behavior, anxiety-like behavior, hippocampus, HDAC4, histone deacetylase, histone acetylation, mTOR, GNAI1, HCN1, gene expression dysregulation, sodium butyrate, histone deacetylase inhibitors, emotionality
MeSH terms
Aging, Animals, Animals, Newborn, Anxiety Disorders, Depressive Disorder, Emotions, Female, Fluoxetine, Hippocampus, Histamine Antagonists, Histone Deacetylases, Male, Gene Expression, Rats, Sprague-Dawley, Antidepressive Agents, Second-Generation, Butyric Acid, Transcriptome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review