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Updated: Sep 28, 2025
Locomotor Assessment of 6-Hydroxydopamine-induced Adult Zebrafish-based Parkinson's Disease Model
Published on: December 28, 2021
A Critical Review of Zebrafish Models of Parkinson's Disease
Jillian M Doyle1, Roger P Croll1
1Department of Physiology and Biophysics, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.
Abstract:
A wide variety of human diseases have been modelled in zebrafish, including various types of cancer, cardiovascular diseases and neurodegenerative diseases like Alzheimer's and Parkinson's. Recent reviews have summarized the currently available zebrafish models of Parkinson's Disease, which include gene-based, chemically induced and chemogenetic ablation models. The present review updates the literature, critically evaluates each of the available models of Parkinson's Disease in zebrafish and compares them with similar models in invertebrates and mammals to determine their advantages and disadvantages. We examine gene-based models, including ones linked to Early-Onset Parkinson's Disease: PARKIN, PINK1, DJ-1, and SNCA; but we also examine LRRK2, which is linked to Late-Onset Parkinson's Disease. We evaluate chemically induced models like MPTP, 6-OHDA, rotenone and paraquat, as well as chemogenetic ablation models like metronidazole-nitroreductase. The article also reviews the unique advantages of zebrafish, including the abundance of behavioural assays available to researchers and the efficiency of high-throughput screens. This offers a rare opportunity for assessing the potential therapeutic efficacy of pharmacological interventions. Zebrafish also are very amenable to genetic manipulation using a wide variety of techniques, which can be combined with an array of advanced microscopic imaging methods to enable in vivo visualization of cells and tissue. Taken together, these factors place zebrafish on the forefront of research as a versatile model for investigating disease states. The end goal of this review is to determine the benefits of using zebrafish in comparison to utilising other animals and to consider the limitations of zebrafish for investigating human disease.
Insights
Zebrafish models offer a powerful platform for Parkinson's Disease research, enabling efficient drug screening and in-depth study of disease mechanisms. This review evaluates various zebrafish models, comparing their strengths and weaknesses against other animal models.
Area of Science:
- Neuroscience
- Genetics
- Pharmacology
Background:
- Zebrafish are increasingly utilized to model human diseases, including neurodegenerative conditions like Parkinson's Disease.
- Existing reviews cover various Parkinson's Disease zebrafish models, necessitating an updated literature assessment.
Purpose of the Study:
- To critically evaluate available Parkinson's Disease models in zebrafish.
- To compare these models with invertebrate and mammalian counterparts, highlighting advantages and disadvantages.
- To assess the utility of zebrafish for therapeutic intervention studies.
Main Methods:
- Review of gene-based models (PARKIN, PINK1, DJ-1, SNCA, LRRK2).
- Evaluation of chemically induced models (MPTP, 6-OHDA, rotenone, paraquat).
- Assessment of chemogenetic ablation models (metronidazole-nitroreductase).
Main Results:
- Zebrafish offer numerous behavioral assays and high-throughput screening capabilities.
- Genetic manipulation and advanced imaging facilitate in vivo visualization.
- Models cover both early-onset and late-onset Parkinson's Disease.
Conclusions:
- Zebrafish present a versatile and efficient model for Parkinson's Disease research.
- Their advantages in screening and visualization position them at the forefront of disease investigation.
- Understanding limitations is crucial for effective translation to human disease.
