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Aluminium chloride-induced toxicity in zebrafish larvae
A Monaco1, M C Grimaldi1, I Ferrandino1
1Department of Biology, University of Naples Federico II, Napoli, Italy.
Journal of Fish Diseases
|August 16, 2016
Summary
Aluminium chloride (AlCl3) exposure is toxic to fish embryos and larvae, causing developmental issues and lethality. This study highlights aluminium
Area of Science:
- Environmental Toxicology
- Developmental Biology
- Neuroscience
Background:
- Aluminium chloride (AlCl3) is a widespread environmental contaminant.
- Understanding the toxicological effects of aluminium on early life stages of aquatic organisms is crucial for ecological risk assessment.
Purpose of the Study:
- To investigate the phenotypic and lethal effects of aluminium chloride exposure on fish embryos and larvae.
- To determine the cardiotoxic and neurotoxic potential of aluminium.
Main Methods:
- Embryos and larvae were exposed to varying concentrations of AlCl3 for 72 hours.
- Phenotypic changes and lethality were assessed at 24, 48, and 72 hours.
- Specific endpoints included pericardial edema, heart rate alterations, and glial cell changes (GFAP expression).
Main Results:
- Larvae exhibited higher sensitivity to AlCl3 toxicity compared to embryos, with significantly lower minimal lethal concentrations.
- Exposure to 100 μm AlCl3 induced pericardial edema and altered heart rate in 50% of larvae.
- Neurological injury was observed, evidenced by a significant reduction in glial fibrillary acidic protein-positive cells.
Conclusions:
- Aluminium chloride demonstrates significant toxicity to developing fish.
- Aluminium acts as both a cardiotoxin and a neurotoxin, impacting vital physiological functions.
- These findings underscore the environmental risk posed by aluminium contamination.
