Cited by 197Treatment of Major DepressionMitochondrial Function and PathologyStress Responses and Cortisol

Inhibition of mitochondrial respiratory chain in brain of rats subjected to an experimental model of depression

Rezin, Gislaine T., Cardoso, Mariane R., Gonçalves, Cinara L., Scaini, Giselli, Fraga, Daiane B., Riegel, Rafael E., Comim, Clarissa M., Quevedo, João +1 more·2008·Neurochemistry International

Abstract

Depressive disorders, including major depression, are serious and disabling. However, the exact pathophysiology of depression is not clearly understood. Life stressors contribute in some fashion to depression and are an extension of what occurs normally. In this context, chronic stress has been used as an animal model of depression. Based on the hypothesis that metabolism impairment might be involved in the pathophysiology of depression, in the present work we evaluated the activities of mitochondrial respiratory chain complexes and creatine kinase in brain of rats subjected to chronic stress. After 40 days of mild stress, a reduction in sweet food ingestion was observed, as well as increased adrenal gland weight, when compared to control group. We also verified that control group gained weight after 40 days, but stressed group did not. Moreover, our findings showed that complex I, III and IV were inhibited in stress group only in cerebral cortex and cerebellum. On the other hand, complex II and creatine kinase were not affected in stressed group. Although it is difficult to extrapolate our findings to the human condition, the inhibition of mitochondrial respiratory chain by chronic stress may be one mechanism in the pathophysiology of depressive disorders.

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Crossref · 10.1016/j.neuint.2008.09.012

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Authors
Rezin, G. T., Cardoso, M. R., Gonçalves, C. L., Scaini, G., Fraga, D. B., Riegel, R. E., Comim, C. M., Quevedo, J., & Streck, E. L.
Affiliations
Universidade do Extremo Sul Catarinense (BR)
Corresponding author
Streck, Emilio L.
Venue
Neurochemistry International
Publisher
Elsevier BV
Published
2008-12
Volume
53
Issue
6-8
Pages
395-400
ISSN
0197-0186 (ISSN-L)
OpenAlex
W1996982207
Cited by
197
References
63
Citations by year
2026: 8 · 2025: 5 · 2024: 5 · 2023: 8 · 2022: 12 · 2021: 9 · 2020: 19 · 2019: 21 · 2018: 20 · 2017: 11 · 2016: 14 · 2015: 7 · 2014: 12 · 2013: 9 · 2012: 7
FWCI
7.00
Type
journal article
Language
en
Open access
closed
Locations
  • Neurochemistry International (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
depression, chronic stress, mitochondrial respiratory chain, mitochondrial complex I inhibition, complex III inhibition, complex IV inhibition, creatine kinase, brain energy metabolism, cerebral cortex, cerebellum, adrenal weight, sweets consumption, rat model of depression
MeSH terms
Adrenal Glands, Animals, Appetite Regulation, Body Weight, Brain, Brain Diseases, Metabolic, Chronic Disease, Creatine Kinase, Depressive Disorder, Disease Models, Animal, Electron Transport, Energy Metabolism, Male, Mitochondria, Organ Size, Oxidative Phosphorylation, Stress, Psychological, Biomarkers, Down-Regulation, Rats, Wistar, Rats

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