PUBLICATION
Manganese Overexposure Alters Neurogranin Expression and Causes Behavioral Deficits in Larval Zebrafish
- Authors
- Alba-González, A., Dragomir, E.I., Haghdousti, G., Yáñez, J., Dadswell, C., González-Méndez, R., Wilson, S.W., Tuschl, K., Folgueira, M.
- ID
- ZDB-PUB-240512-12
- Date
- 2024
- Source
- International Journal of Molecular Sciences 25(9): (Journal)
- Registered Authors
- Dragomir, Elena, Folgueira Otero, Monica, Tuschl, Karin, Wilson, Steve
- Keywords
- Danio rerio, development, manganese, neurogranin, neurotoxicity
- MeSH Terms
-
- Animals
- Behavior, Animal*/drug effects
- Chlorides/toxicity
- Larva*/drug effects
- Manganese*/toxicity
- Manganese Compounds
- Neurogranin*/genetics
- Neurogranin*/metabolism
- Zebrafish*/metabolism
- PubMed
- 38732149 Full text @ Int. J. Mol. Sci.
Citation
Alba-González, A., Dragomir, E.I., Haghdousti, G., Yáñez, J., Dadswell, C., González-Méndez, R., Wilson, S.W., Tuschl, K., Folgueira, M. (2024) Manganese Overexposure Alters Neurogranin Expression and Causes Behavioral Deficits in Larval Zebrafish. International Journal of Molecular Sciences. 25(9):.
Abstract
Manganese (Mn), a cofactor for various enzyme classes, is an essential trace metal for all organisms. However, overexposure to Mn causes neurotoxicity. Here, we evaluated the effects of exposure to Mn chloride (MnCl2) on viability, morphology, synapse function (based on neurogranin expression) and behavior of zebrafish larvae. MnCl2 exposure from 2.5 h post fertilization led to reduced survival (60%) at 5 days post fertilization. Phenotypical changes affected body length, eye and olfactory organ size, and visual background adaptation. This was accompanied by a decrease in both the fluorescence intensity of neurogranin immunostaining and expression levels of the neurogranin-encoding genes nrgna and nrgnb, suggesting the presence of synaptic alterations. Furthermore, overexposure to MnCl2 resulted in larvae exhibiting postural defects, reduction in motor activity and impaired preference for light environments. Following the removal of MnCl2 from the fish water, zebrafish larvae recovered their pigmentation pattern and normalized their locomotor behavior, indicating that some aspects of Mn neurotoxicity are reversible. In summary, our results demonstrate that Mn overexposure leads to pronounced morphological alterations, changes in neurogranin expression and behavioral impairments in zebrafish larvae.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping