Mechanisms of Neuronal Death in the Cerebral Cortex during Aging and Development of Alzheimer's Disease-Like Pathology in Rats

Darya V. Telegina, Gleb K. Suvorov, Oyuna S. Kozhevnikova, Nataliya G. Kolosova

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Alzheimer's disease (AD) is the commonest type of late-life dementia and damages the cerebral cortex, a vulnerable brain region implicated in memory, emotion, cognition, and decision-making behavior. AD is characterized by progressive neuronal loss, but the mechanisms of cell death at different stages of the disease remain unknown. Here, by means of OXYS rats as an appropriate model of the most common (sporadic) AD form, we studied the main pathways of cell death during development of AD-like pathology, including the preclinical stage. We found that apoptosis is activated at the pre-symptomatic stage (age 20 days) correlating with the retardation of brain development in the OXYS strain early in life. Progression of the AD-like pathology was accompanied by activation of apoptosis and necroptosis resulting from a decline of autophagy-mediated proteostasis. Our results are consistent with the idea that the nature of changes in the pathways of apoptosis, autophagy, and necrosis depends on the stage of AD.

Original languageEnglish
Article number5632
Number of pages13
JournalInternational Journal of Molecular Sciences
Volume20
Issue number22
DOIs
Publication statusPublished - 11 Nov 2019

Keywords

  • Alzheimer’s disease
  • apoptosis
  • autophagy
  • necroptosis
  • neuronal cell death
  • OXYS rats
  • Necroptosis
  • Neuronal cell death
  • Autophagy
  • Apoptosis
  • NECROPTOSIS
  • ISCHEMIC MODEL
  • INVOLVEMENT
  • MITOPHAGY
  • AUTOPHAGY
  • CELL-DEATH
  • OXYS RATS
  • Alzheimer's disease
  • BRAIN
  • AGE

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