Multiphysics of Prionlike Diseases: Progression and Atrophy

Area of Science:

• Neuroscience
• Computational Biology
• Pathology

Background:

• Neurodegenerative diseases involve toxic protein accumulation and propagation.
• Disease progression follows characteristic patterns, leading to distinct stages, cognitive deficits, and pathologies.

Purpose of the Study:

• To simulate anisotropic toxic protein propagation and accumulation in a full brain model.
• To demonstrate how varying initial seeding zones can replicate distinct prion-like disease evolutions.
• To couple protein transport with a mechanical atrophy model for realistic degeneration patterns.

Main Methods:

• Developed a computational model for anisotropic toxic protein propagation.
• Simulated protein spread within a full brain geometry.
• Integrated a mechanical atrophy model with the protein transport model.

Main Results:

• The model successfully reproduced characteristic prion-like disease evolution patterns based on initial seeding zones.
• The model accurately predicted the total toxic protein load evolution.
• Coupled models generated typical neurodegenerative disease degeneration patterns.

Conclusions:

• Computational modeling can effectively simulate the complex propagation and accumulation of toxic proteins in the brain.
• The model provides a framework for understanding the origins of distinct disease progression patterns.
• This approach aids in visualizing and predicting neurodegenerative disease development and associated atrophy.