Antioxidants Trolox and Methazolamide Protect Microvascular Endothelial Cells from Oxidative Damage Induced by Sporadic and Familial Forms of Oligomeric Amyloid-β.

ABSTRACT: Cerebral amyloid angiopathy (CAA), present in more than 90% of Alzheimer's disease (AD) cases, associates with focal ischemia and neurovascular dysfunction. Genetic variants at positions 21-23 of amyloid beta (Aβ), among them the Dutch mutation (AβE22Q), are primarily linked to CAA and the development of cerebral hemorrhages. An important contributor to CAA pathogenesis is the dysregulation of mitochondria-mediated pathways with concomitant induction of oxidative stress. Using biochemical assays and immunofluorescence microscopy, this work demonstrates the exacerbated formation of reactive oxygen species (ROS) in human brain microvascular endothelial cells after short exposure to soluble oligomers of synthetic homologues of Aβ1-42 and the Dutch variant, inducing lipid peroxidation and prot

SUBMITTER: Valle ML 

PROVIDER: S-EPMC12649480 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature