Salivary levels of amyloid beta reflect brain amyloid beta burden in cognitively-normal older adults.

ABSTRACT:

Background

Amyloid beta (Aβ) plaque burden, as measured by positron emission tomography (PET), is increasingly being used as a biomarker for Alzheimer's disease (AD) as well as a screening or monitoring tool for clinical trials with amyloid-lowering drugs. However, PET imaging is expensive, invasive and not widely available for all patients, necessitating alternative means to assess brain Aβ accumulation.

Objectives

In this study, we measured levels of Aβ42, Aβ40 and Aβ38 in saliva samples from cognitively unimpaired older adults (n=93; 61.7 % female; mean age = 70.1 ± 6.6 years) using the Mesoscale Discovery platform, carefully considering preanalytical variables, including timing of sample collection, blood contamination and sample concentration. We next determined the rel

SUBMITTER: Bamford AR 

PROVIDER: S-EPMC12252581 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature