Understanding the complex interplay between tau, amyloid and the network in the spatiotemporal progression of Alzheimer's Disease.
bioRxiv
; 2024 Jul 31.
Article
em En
| MEDLINE
| ID: mdl-38559176
ABSTRACT
INTRODUCTION:
The interaction of amyloid and tau in neurodegenerative diseases is a central feature of AD pathophysiology. While experimental studies point to various interaction mechanisms, their causal direction and mode (local, remote or network-mediated) remain unknown in human subjects. The aim of this study was to compare mathematical reaction-diffusion models encoding distinct cross-species couplings to identify which interactions were key to model success.METHODS:
We tested competing mathematical models of network spread, aggregation, and amyloid-tau interactions on publicly available data from ADNI.RESULTS:
Although network spread models captured the spatiotemporal evolution of tau and amyloid in human subjects, the model including a one-way amyloid-to-tau aggregation interaction performed best.DISCUSSION:
This mathematical exposition of the "pas de deux" of co-evolving proteins provides quantitative, whole-brain support to the concept of amyloid-facilitated-tauopathy rather than the classic amyloid-cascade or pure-tau hypotheses, and helps explain certain known but poorly understood aspects of AD.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
BioRxiv
Ano de publicação:
2024
Tipo de documento:
Article