Cited by 67Treatment of Major DepressionAntioxidant Activity and Oxidative StressTryptophan and brain disorders

α-Tocopherol administration produces an antidepressant-like effect in predictive animal models of depression

Lobato, Kelly R., Cardoso, Chandra C., Binfaré, Ricardo W., Budni, Josiane, Wagner, Cristiane L.R., Brocardo, Patrícia S., de Souza, Luiz Felipe, Brocardo, Caroline +4 more·2010·Behavioural Brain Research

Abstract

This study investigated the antidepressant potential of alpha-tocopherol, the most active and abundant form of vitamin E, in the forced swim test (FST) and tail suspension test (TST). The acute oral treatment with alpha-tocopherol at the doses of 30 and 100mg/kg reduced the immobility time in the FST and in the TST. A single i.c.v. administration of alpha-tocopheryl phosphate, a water-soluble analogue of alpha-tocopherol, also reduced the immobility time in the FST (0.1 and 1 nmol/site) and in the TST (0.1 nmol/site). In addition, the long-term treatment (28 days) with alpha-tocopherol (10mg/kg, p.o.) significantly reduced the immobility time in the FST. Moreover, a subeffective dose of alpha-T (10mg/kg, p.o.) potentiated the effect of fluoxetine (10mg/kg, p.o.) in the FST. The long-term treatment with alpha-T was able to increase the glutathione (GSH) antioxidant defense system, while the acute treatment was not. The long-term treatment with alpha-tocopherol (10mg/kg) increased the GSH levels in the hippocampus and in the prefrontal cortex and increased the glutathione peroxidase and glutathione reductase activity in the hippocampus (10mg/kg) and in the prefrontal cortex (10-100mg/kg). The long-term treatment with fluoxetine (10mg/kg, p.o.), a positive control, was also able to increase the GSH levels in the hippocampus, but failed to alter the activity of both enzymes. Besides the specific antidepressant-like effect, long-term, but not the acute treatment with alpha-T, especially in the doses that produced an antidepressant-like effect (10mg/kg), improved the antioxidant defenses in the mouse hippocampus and prefrontal cortex, two structures closely implicated in the pathophysiology of depression.

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Crossref · 10.1016/j.bbr.2010.02.002

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Authors
Lobato, K. R., Cardoso, C. C., Binfaré, R. W., Budni, J., Wagner, C. L. R., Brocardo, P. S., de Souza, L. F., Brocardo, C., Flesch, S., Freitas, A. E., Dafré, A. L., & Rodrigues, A. L. S.
Affiliations
Universidade Federal de Santa Catarina (BR)
Corresponding author
Rodrigues, Ana Lúcia S.
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2010-06
Volume
209
Issue
2
Pages
249-259
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2055517339
Cited by
67
References
62
Citations by year
2025: 4 · 2023: 4 · 2022: 1 · 2021: 2 · 2020: 7 · 2019: 2 · 2018: 2 · 2017: 5 · 2016: 3 · 2015: 9 · 2014: 7 · 2013: 10 · 2012: 8
FWCI
4.93
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
alpha-tocopherol, vitamin E, antidepressant-like effects, depression, forced swim test, tail suspension test, intracerebroventricular administration, glutathione, antioxidant defense, glutathione peroxidase, glutathione reductase, hippocampus, prefrontal cortex, immobility time
MeSH terms
Analysis of Variance, Animals, Antidepressive Agents, Depressive Disorder, Disease Models, Animal, Exploratory Behavior, Female, Fluoxetine, Glutathione, Hippocampus, Motor Activity, Swimming, Time Factors, Prefrontal Cortex, Hindlimb Suspension, alpha-Tocopherol, Immobility Response, Tonic, Mice

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