Cited by 180Neurotransmitter Receptor Influence on BehaviorTryptophan and brain disordersTreatment of Major Depression

High-fat diet-induced metabolic disorders impairs 5-HT function and anxiety-like behavior in mice

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Zemdegs, Juliane, Quesseveur, Gaël, Jarriault, David, Pénicaud, Luc, Fioramonti, Xavier, Guiard, Bruno P.·2016·British Journal of Pharmacology

Abstract

BACKGROUND AND PURPOSE: The link between type 2 diabetes mellitus (T2DM) and depression is bidirectional. However, the possibility that metabolic disorders may elicit anxiogenic-like/depressive-like symptoms or alter the efficacy of antidepressant drugs remains poorly documented. This study explored the influence of T2DM on emotionality and proposed a therapeutic strategy that might be used in depressed diabetic patients. EXPERIMENTAL APPROACH: Mice were fed a high-fat diet (HFD) and subjected to a full comprehensive metabolic and behavioural analysis to establish correlations between metabolic and psychiatric disorders. In vivo intra-hippocampal microdialysis was also applied to propose a mechanism underpinning the phenotype of mice fed the HFD. Finally, we tested whether chronic administration of the selective 5-HT reuptake inhibitor escitalopram or HFD withdrawal could reverse HFD-induced metabolic and behavioural anomalies. KEY RESULTS: The increased body weight, hyperglycaemia and impaired glucose tolerance in response to HFD were correlated with anxiogenic-like/depressive-like symptoms. Moreover, this phenotype was associated with decreased extracellular 5-HT levels in the hippocampus which may result from increased sensitivity of the dorsal raphe 5-HT1A autoreceptor. Interestingly, the beneficial effect of prolonged administration of escitalopram was abolished in HFD-fed mice. On the contrary, HFD withdrawal completely reversed metabolic impairments and positively changed symptoms of anxiety, although some behavioural anomalies persisted. CONCLUSIONS AND IMPLICATIONS: Our data provide clear-cut evidence that both pathologies are finely correlated and associated with impaired 5-HT mediated neurotransmission in the hippocampus. Further experiments are warranted to define the most adequate strategy for the treatment of such co-morbidity. LINKED ARTICLES: This article is part of a themed section on Updating Neuropathology and Neuropharmacology of Monoaminergic Systems. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v173.13/issuetoc.

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  • Chronic HFD in male mice, leading to increased anxiety-like behavior, impairs basal electrical activity and excitability of serotonin neurons and serotonin-mediated neurotransmission in the hippocampus.

    “Chronic HFD in male mice, leading to increased anxiety-like behavior, has been shown to impair the basal electrical activity and excitability of serotonin neurons as well as serotonin-mediated neurotransmission in the hippocampus [33,35].”

    From The menace of obesity to depression and anxiety prevalence (2022) · cites this paper as [33]

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  1. Kilkenny C, Browne W, Cuthill IC, Emerson M, Altman DG (2010). NC3Rs Reporting Guidelines Working Group. Br J Pharmacol 160: 1577–1579. [DOI] [PMC free article] [PubMed] [Google Scholar]

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Authors
Zemdegs, J., Quesseveur, G., Jarriault, D., Pénicaud, L., Fioramonti, X., & Guiard, B. P.
Affiliations
  • Université Paris-Sud (FR)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Guiard, Bruno P.
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
2015-12-09
Volume
173
Issue
13
Pages
2095-2110
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W1822601256
Cited by
180
References
80
Citations by year
2026: 7 · 2025: 20 · 2024: 20 · 2023: 18 · 2022: 16 · 2021: 31 · 2020: 22 · 2019: 14 · 2018: 13 · 2017: 7 · 2016: 12
FWCI
4.95
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Société Française du Diabète
  • National Council for Scientific and Technological Development (CNPq)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
high-fat diet, type 2 diabetes, depression, anxiety-like behavior, serotonin, 5-HT1A autoreceptors, hippocampus, escitalopram, glucose tolerance, hyperglycemia, monoaminergic systems, antidepressant efficacy
MeSH terms
Animals, Anxiety, Behavior, Animal, Male, Metabolic Diseases, Mice, Inbred C57BL, Serotonin, Citalopram, Mice, Diet, High-Fat

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