Correlation of plasma and neuroimaging biomarkers in Alzheimer's disease

Ann Clin Transl Neurol. 2022 May;9(5):756-761. doi: 10.1002/acn3.51529. Epub 2022 Mar 20.

Abstract

Blood-based phosphorylated tau (Ptau) 181 and 217 biomarkers are sensitive and specific for Alzheimer's disease. In this racial/ethnically diverse cohort study, participants were classified as biomarker positive (Ptau+) or negative (Ptau-) based on Ptau 181 and 217 concentrations and as cognitively impaired (Sym) or unimpaired (Asym). The four groups, Ptau-/Asym, Ptau+/Asym, Ptau-/Sym, and Ptau+/Sym, differed by age, APOE-4 allele frequency, total tau, neurofilament light chain, and cortical thickness measured by MRI. Our results add to increasing evidence that plasma Ptau 181 and 217 concentrations are valid Alzheimer's disease biomarkers in diverse populations.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Alzheimer Disease* / diagnostic imaging
  • Biomarkers
  • Cohort Studies
  • Humans
  • Magnetic Resonance Imaging
  • Neuroimaging

Substances

  • Biomarkers