Can the calcium hypothesis explain synaptic loss in alzheimer's disease?

Elena Popugaeva, Ilya Bezprozvanny

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Alzheimer's disease (AD) is the threat of modern humankind that is provoked by increased human lifespan. Despite extensive studies on AD pathology for more than 100 years, there are no disease-preventing therapies. Growing evidence suggests the role of calcium (Ca2+) in the pathogenesis of AD. The main purpose of the article is to understand whether modern science is able to explain the synapse loss observed in early AD and discuss the role of Ca 2+ hypothesis in it. Based on results obtained in our laboratory and others, we propose that familial AD-associated mutations in presenilins cause a Ca2+ overload of endoplasmic reticulum stores which leads to compensatory downregulation of the neuronal store-operated Ca2+ (nSOC) entry pathway. We propose that synaptic nSOC is necessary for the stability of mature synaptic spines and that dysfunction of this pathway may play an important role in synaptic and memory loss in AD.

Original languageEnglish (US)
Pages (from-to)139-141
Number of pages3
JournalNeurodegenerative Diseases
Volume13
Issue number2-3
DOIs
StatePublished - Jan 2014

Keywords

  • Alzheimer's disease
  • Calcium signaling
  • Mushroom spines
  • Neuronal store-operated channels
  • Synapse

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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