Cited by 83Stress Responses and CortisolTryptophan and brain disordersTreatment of Major Depression

Adolescent voluntary exercise attenuated hippocampal innate immunity responses and depressive-like behaviors following maternal separation stress in male rats

Sadeghi, Mahsa, Peeri, Maghsoud, Hosseini, Mir-Jamal·2016·Physiology & Behavior

Abstract

Early life stressful events have detrimental effects on the brain and behavior, which are associated with the development of depression. Immune-inflammatory responses have been reported to contribute in the pathophysiology of depression. Many studies have reported on the beneficial effects of exercise against stress. However, underlying mechanisms through which exercise exerts its effects were poorly studied. Therefore, it applied maternal separation (MS), as a valid animal model of early-life adversity, in rats from postnatal day (PND) 2 to 14 for 180min per day. At PND 28, male Wistar albino rats were subjected to 5 experimental groups; 1) controls 2) MS rats 3) MS rats treated with fluoxetine 5mg/kg to PND 60, 4) MS rats that were subjected to voluntary running wheel (RW) exercise and 5) MS rats that were subjected to mandatory treadmill (TM) exercise until adulthood. At PND 60, depressive-like behaviors were assessed by using forced swimming test (FST), splash test, and sucrose preference test (SPT). Our results revealed that depressive-like behaviors following MS stress were associated with an increase in expression of toll-like receptor 4 (Tlr-4) and its main signaling protein, Myd88, in the hippocampal formation. Also, we found that voluntary (and not mandatory) physical exercise during adolescence is protected against depressant effects of early-life stress at least partly through mitigating the innate immune responses in the hippocampus.

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Crossref · 10.1016/j.physbeh.2016.05.017

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  • In cognitive impairment models, SAHA increases histone acetylation, enhances BDNF expression, and strengthens antioxidant defenses, thereby improving learning and memory.

    “In cognitive impairment models, it increases histone acetylation, enhances BDNF expression, and strengthens antioxidant defenses, thereby improving learning and memory (Chen et al., 2019; Amiri et al., 2017; Sadeghi et al., 2016).”

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Authors
Sadeghi, M., Peeri, M., & Hosseini, M.-J.
Affiliations
  • Islamic Azad University, Tehran (IR)
  • Zanjan University of Medical Sciences (IR)
Corresponding author
Peeri, Maghsoud
Venue
Physiology & Behavior
Publisher
Elsevier BV
Published
2016-09
Volume
163
Pages
177-183
ISSN
0031-9384 (ISSN-L)
OpenAlex
W2351823664
Cited by
83
References
57
Citations by year
2026: 3 · 2025: 5 · 2024: 11 · 2023: 10 · 2022: 13 · 2021: 9 · 2020: 8 · 2019: 11 · 2018: 6 · 2017: 6
FWCI
4.90
Type
journal article
Language
en
Open access
closed
Locations
  • Physiology & Behavior (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
maternal separation, early life stress, depression, hippocampus, innate immunity, TLR4, MyD88, fluoxetine, treadmill exercise, depression-like behavior, neuroinflammation
MeSH terms
Age Factors, Animals, Depression, Disease Models, Animal, Exercise Test, Exploratory Behavior, Female, Fluoxetine, Food Preferences, Gene Expression Regulation, Hippocampus, Immunity, Innate, Male, Maternal Deprivation, Motivation, Physical Conditioning, Animal, Pregnancy, Rats, Wistar, Antidepressive Agents, Second-Generation, Toll-Like Receptor 4, Rats

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