PUBLICATION
Ethanol Preference Leads to Alterations in Telomere Length, Mitochondria Copy Number, and Antioxidant Enzyme Activity in Zebrafish Brains
- Authors
- Moraes, I.B., Paiva, I.M., Moreira-Júnior, R.E., Sartori, B.M., Franco, R.R., Espindola, F.S., Murgas, L.D.S., Brunialti-Godard, A.L.
- ID
- ZDB-PUB-230429-77
- Date
- 2023
- Source
- Frontiers in bioscience (Landmark edition) 28: 7373 (Journal)
- Registered Authors
- Keywords
- antioxidant enzymes, ethanol preference, mtDNA, telomeres, zebrafish
- MeSH Terms
-
- Alcoholism*
- Animals
- Antioxidants*/pharmacology
- Brain/metabolism
- Catalase/genetics
- Catalase/metabolism
- Catalase/pharmacology
- DNA Copy Number Variations
- DNA, Mitochondrial/genetics
- Ethanol
- Mitochondria/metabolism
- Oxidative Stress
- Superoxide Dismutase/genetics
- Superoxide Dismutase/metabolism
- Telomere/genetics
- Telomere/metabolism
- Zebrafish/genetics
- Zebrafish/metabolism
- PubMed
- 37114543 Full text @ Front Biosci (Landmark Ed)
Citation
Moraes, I.B., Paiva, I.M., Moreira-Júnior, R.E., Sartori, B.M., Franco, R.R., Espindola, F.S., Murgas, L.D.S., Brunialti-Godard, A.L. (2023) Ethanol Preference Leads to Alterations in Telomere Length, Mitochondria Copy Number, and Antioxidant Enzyme Activity in Zebrafish Brains. Frontiers in bioscience (Landmark edition). 28:7373.
Abstract
Background The motivations for and effects of ethanol consumption vary considerably among individuals, and as such, a significant proportion of the population is prone to substance abuse and its negative consequences in the physical, social, and psychological spheres. In a biological context, the characterization of these phenotypes provides clues for understanding the neurological complexity associated with ethanol abuse behavior. Therefore, the objective of this research was to characterize four ethanol preference phenotypes described in zebrafish: Light, Heavy, Inflexible, and Negative Reinforcement.
Methods To do this, we evaluated the telomere length, mtDNA copy number using real-time quantitative PCR (qPCR), and the activity of these antioxidant enzymes: catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GPx) in the brain, and the interactions between these biomarkers. Changes observed in these parameters were associated with ethanol consumption and alcohol abuse.
Results The Heavy, Inflexible, and Negative Reinforcement phenotypes showed ethanol preference. This was particularly the case with the Inflexible phenotype, which was the group with the greatest ethanol preference. These three phenotypes showed telomere shortening as well as high SOD/CAT and/or GPx activities, while the Heavy phenotype also showed an increase in the mtDNA copy number. However, the Light phenotype, containing individuals without ethanol preference, did not demonstrate any changes in the analyzed parameters even after being exposed to the drug. Additionally, the PCA analysis showed a tendency to cluster the Light and Control groups differently from the other ethanol preference phenotypes. There was also a negative correlation between the results of the relative telomere length and SOD and CAT activity, providing further evidence of the biological relationship between these parameters.
Conclusions Our results showed differential molecular and biochemistry patterns in individuals with ethanol preference, suggesting that the molecular and biochemical basis of alcohol abuse behavior extends beyond its harmful physiological effects, but rather is correlated with preference phenotypes.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping