When the infectious environment meets the AD brain.
Mol Neurodegener
; 17(1): 53, 2022 08 19.
Article
em En
| MEDLINE
| ID: mdl-35986296
ABSTRACT
BACKGROUND:
The Amyloid theory of Alzheimer's disease (AD) suggests that the deposition of Amyloid ß (Aß) in the brain triggers a chain of events, involving the deposition of phosphorylated Tau and other misfolded proteins, leading to neurodegeneration via neuroinflammation, oxidative stress, and neurovascular factors. The infectious theory linked various infectious agents with the development of AD, raising the possibility that they serve as etiological causes of the disease. Are these theories mutually exclusive, or do they coincide? MAIN BODY In this review, we will discuss how the two theories converge. We present a model by which (1) the systemic infectious burden accelerates the development of AD brain pathology via bacterial Amyloids and other pathogen-associated molecular patterns (PAMPs), and (2) the developing AD brain pathology increases its susceptibility to the neurotoxicity of infectious agents -derived PAMPs, which drive neurodegeneration via activated microglia.CONCLUSIONS:
The reciprocal effects of amyloid deposition and systemic infectious burden may lead to a vicious cycle fueling Alzheimer's disease pathogenesis.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Doença de Alzheimer
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Mol Neurodegener
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Israel