Classic and evolving animal models in Parkinson's disease

Area of Science:

• Neuroscience
• Pathology
• Pharmacology

Background:

• Parkinson's disease (PD) is a progressive neurodegenerative disorder affecting motor and non-motor functions.
• Pathologically, PD involves the loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) and dopamine deficiency.
• The heterogeneity of PD necessitates diverse animal models to study its multifaceted aspects.

Purpose of the Study:

• To review and update knowledge on available in vivo and in vitro animal models for Parkinson's disease research.
• To analyze the strengths and weaknesses of various PD models.
• To aid researchers in selecting appropriate models for studying PD pathogenesis and therapeutic interventions.

Main Methods:

• Review of existing literature on animal models used in Parkinson's disease research.
• Categorization of models including conventional pharmacological, neurotoxin-induced, genetically modified, and cellular models.
• Evaluation of the recapitulation of PD biochemical characteristics by different models.

Main Results:

• Currently available PD models, including pharmacological, neurotoxin-induced, genetic, and cellular types, do not fully replicate all biochemical features of the disease.
• Each model possesses unique strengths and weaknesses, making them suitable for studying specific aspects of PD.
• A variety of models are required due to the multifactorial nature and heterogeneity of Parkinson's disease.

Conclusions:

• No single animal model perfectly recapitulates Parkinson's disease.
• Understanding the limitations and strengths of each model is critical for effective PD research.
• Continued development and careful selection of animal models are essential for advancing therapeutic strategies for Parkinson's disease.