Infusion of blood from mice displaying cerebral amyloidosis accelerates amyloid pathology in animal models of Alzheimer's disease
Previous studies showed that injection of tissue extracts containing amyloid-beta (A beta) aggregates accelerate amyloid deposition in the brain of mouse models of Alzheimer's disease (AD) through prion-like mechanisms. In this study, we evaluated whether brain amyloidosis could be accelerated by blood infusions, procedures that have been shown to transmit prion diseases in animals and humans. Young transgenic mice infused with whole blood or plasma from old animals with extensive A beta deposition in their brains developed significantly higher levels brain amyloidosis and neuroinflammation compared to untreated animals or mice infused with wild type blood. Similarly, intra-venous injection of purified A beta aggregates accelerated amyloid pathology, supporting the concept that A beta seeds present in blood can reach the brain to promote neuropathological alterations in the brain of treated animals. However, an amyloid-enhancing effect of other factors present in the blood of donors cannot be discarded. Our results may help to understand the role of peripheral (amyloid-dependent or -independent) factors implicated in the development of AD and uncover new strategies for disease intervention.
|Título según WOS:||ID WOS:000598485600001 Not found in local WOS DB|
|Título de la Revista:||ACTA NEUROPATHOLOGICA COMMUNICATIONS|
|Fecha de publicación:||2020|