Introduction to spasticity and related mouse models

Area of Science:

• Neurology
• Neuroscience
• Rehabilitation Medicine

Background:

• Spasticity is a prevalent cause of motor disability globally, characterized by increased muscle tone and reflexes.
• Its exact definition and pathophysiology are not fully understood, complicating treatment development.
• Current therapies manage symptoms but do not reverse the underlying pathology.

Purpose of the Study:

• To review the clinical aspects of spasticity, including symptoms and therapies.
• To provide an in-depth overview of pre-clinical spasticity research in mouse models.
• To identify challenges in translating pre-clinical findings to clinical applications.

Main Methods:

• Review of existing clinical knowledge on spasticity.
• Comprehensive literature search on pre-clinical studies of spasticity in animal models, focusing on mice.
• Analysis of experimental challenges and limitations in current research.

Main Results:

• Limited pre-clinical research exists, primarily using rat or cat models.
• Spasticity characterization in clinically relevant mouse models (e.g., stroke models) is understudied.
• Heterogeneous phenotypes and upper motor neuron involvement contribute to research difficulties.

Conclusions:

• There is a critical need for more research on spasticity in clinically relevant mouse models.
• Improved pre-clinical models are essential for developing targeted and effective spasticity therapies.
• Addressing experimental challenges is key for successful clinical translation of spasticity research.