Exploring advancements in early detection of Alzheimer's disease with molecular assays and animal models

Ageing Res Rev. 2024 Sep:100:102411. doi: 10.1016/j.arr.2024.102411. Epub 2024 Jul 8.

Abstract

Alzheimer's Disease (AD) is a challenging neurodegenerative condition, with overwhelming implications for affected individuals and healthcare systems worldwide. Animal models have played a crucial role in studying AD pathogenesis and testing therapeutic interventions. Remarkably, studies on the genetic factors affecting AD risk, such as APOE and TREM2, have provided valuable insights into disease mechanisms. Early diagnosis has emerged as a crucial factor in effective AD management, as demonstrated by clinical studies emphasizing the benefits of initiating treatment at early stages. Novel diagnostic technologies, including RNA sequencing of microglia, offer promising avenues for early detection and monitoring of AD progression. Therapeutic strategies remain to evolve, with a focus on targeting amyloid beta (Aβ) and tau pathology. Advances in animal models, such as APP-KI mice, and the advancement of anti-Aβ drugs signify progress towards more effective treatments. Therapeutically, the focus has shifted towards intricate approaches targeting multiple pathological pathways simultaneously. Strategies aimed at reducing Aβ plaque accumulation, inhibiting tau hyperphosphorylation, and modulating neuroinflammation are actively being explored, both in preclinical models and clinical trials. While challenges continue in developing validated animal models and translating preclinical findings to clinical success, the continuing efforts in understanding AD at molecular, cellular, and clinical levels offer hope for improved management and eventual prevention of this devastating disease.

Keywords: Alzheimer’s Disease; Amyloid Beta (Aβ); Animal Models; Molecular Biomarkers; Neurodegeneration; Tau Hyperphosphorylation; Therapeutic Strategies.

Publication types

  • Review

MeSH terms

  • Alzheimer Disease* / diagnosis
  • Alzheimer Disease* / genetics
  • Alzheimer Disease* / metabolism
  • Amyloid beta-Peptides / metabolism
  • Animals
  • Disease Models, Animal*
  • Early Diagnosis*
  • Humans
  • Mice

Substances

  • Amyloid beta-Peptides