Cited by 17Stress Responses and CortisolTreatment of Major DepressionTryptophan and brain disorders

Altered expression of genes involved in brain energy metabolism as adaptive responses in rats exposed to chronic variable stress; changes in cortical level of glucogenic and neuroactive amino acids

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Herbet, Mariola, Natorska‑Chomicka, Dorota, Korga, Agnieszka, Ostrowska, Marta, Izdebska, Magdalena, Gawrońska‑Grzywacz, Monika, Piątkowska‑Chmiel, Iwona, Pawłowski, Kamil +3 more·2019·Molecular Medicine Reports

Abstract

Brain metabolism is closely associated with neuronal activity and enables the accurate synthesis and function of neurotransmitters. Although previous studies have demonstrated that chronic stress is associated with the overproduction of reactive oxygen species (ROS), which leads to oxidative stress and the disruption of glucose metabolism, the molecular mechanisms and cerebral gluconeogenesis in depression have not yet been completely elucidated. In order to examine this subject, the present study evaluated changes in the expression of selected genes involved in the glycolytic pathway and the levels of glucogenic and neuroactive amino acids in the brain of rats exposed to chronic variable stress. Male Wistar rats (50‑55 days old, weighing 200‑250 g) were divided into two groups: control and stressed, and the rats in the stressed group were exposed to stress conditions for 40 days. Depressive‑like states were observed and recorded by measuring the body weight and forced swim test (FST). The mRNA levels of Slc2a3 (coding GLUT3) and Tfam (activator of mitochondrial transcription and a participant in mitochondrial genome replication) were markedly increased, while a decrease in the expression of Ldhb and GAPDH was also observed. These modifications were associated with the redirection of glucose metabolism to appropriate defensive pathways under chronic stress conditions, and an increased ability to maintain mitochondrial function as potential adaptive responses. A marked reduction of glucogenic and neuroactive amino acids levels indicate the support of energy metabolism by stimulation of the gluconeogenesis pathway. The findings of the present study provide a novel insight into the molecular and biochemical events that impact the development of depression under chronic stress conditions, and they may identify novel targets for therapeutic intervention.

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Crossref · 10.3892/mmr.2019.9865

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  • GAPDH and LDHB mRNA levels were found to be substantially decreased in MDD.

    “Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and lactate dehydrogenase B (LDHB) mRNA levels were found to be substantially decreased in MDD. 462”

    From Major depressive disorder: hypothesis, mechanism, prevention and treatment (2024) · cites this paper as [462]

    The Amino acids analysis section reports significant decreases in GAPDH and Ldhb mRNA in the hippocampus of rats exposed to chronic variable stress. The study does not establish those decreases in people with major depressive disorder (MDD), as the citing sentence implies. (LLM, conf=0.89)

    Experimental — accuracy not yet measured
  • In the hippocampus of depressed rats, mRNA expression of Slc2a3, which codes for GLUT3, is considerably increased.

    “When the transcription of genes involved in glycolysis and glycogen synthesis was examined in the hippocampus of depressed rats, it was found that the mRNA expression of Slc2a3, which codes for GLUT3, is considerably increased. 462”

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Authors
Herbet, M., Natorska‑Chomicka, D., Korga, A., Ostrowska, M., Izdebska, M., Gawrońska‑Grzywacz, M., Piątkowska‑Chmiel, I., Pawłowski, K., Ślaska, B., Poleszak, E., & Dudka, J.
Affiliations
  • Medical University of Lublin (PL)
  • Chair and Department of Toxicology, Medical University of Lublin, 20‑090 Lublin, Poland
  • University of Life Sciences in Lublin (PL)
Venue
Molecular Medicine Reports
Published
2019-01-15
Volume
19
Issue
3
Pages
2386-2396
ISSN
  • 1791-2997 (ISSN-L)
  • 1791-3004
OpenAlex
W2909069974
Cited by
17
References
60
Citations by year
2025: 3 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 4 · 2020: 2 · 2019: 2
FWCI
1.64
Type
journal article
Language
en
Open access
Locations
  • Molecular Medicine Reports (publishedVersion)
  • PubMed (publishedVersion)
Funders
Uniwersytet Medyczny w Lublinie
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
chronic variable stress, depression, brain energy metabolism, gluconeogenesis, glycolysis, GLUT3, TFAM, mitochondrial function, LDHB, glyceraldehyde-3-phosphate dehydrogenase, glucogenic amino acids, neuroactive amino acids, adaptive response, oxidative stress
MeSH terms
Amino Acids, Animals, Body Weight, Brain, Depression, Energy Metabolism, Gene Expression Regulation, Glucose, Humans, Isoenzymes, L-Lactate Dehydrogenase, Mitochondria, Neurons, Stress, Psychological, Transcription Factors, Rats, Wistar, Reactive Oxygen Species, Neurotransmitter Agents, Oxidative Stress, Glucose Transporter Type 3, Rats

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