Format

Send to

Choose Destination
PLoS One. 2013 Nov 20;8(11):e80834. doi: 10.1371/journal.pone.0080834. eCollection 2013.

Tau causes synapse loss without disrupting calcium homeostasis in the rTg4510 model of tauopathy.

Author information

1
Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, Massachusetts, United States of America ; MassGeneral Institute for Neurodegenerative Disease at Massachusetts General Hospital, Charlestown, Massachusetts, United States of America.

Abstract

Neurofibrillary tangles (NFTs) of tau are one of the defining hallmarks of Alzheimer's disease (AD), and are closely associated with neuronal degeneration. Although it has been suggested that calcium dysregulation is important to AD pathogenesis, few studies have probed the link between calcium homeostasis, synapse loss and pathological changes in tau. Here we test the hypothesis that pathological changes in tau are associated with changes in calcium by utilizing in vivo calcium imaging in adult rTg4510 mice that exhibit severe tau pathology due to over-expression of human mutant P301L tau. We observe prominent dendritic spine loss without disruptions in calcium homeostasis, indicating that tangles do not disrupt this fundamental feature of neuronal health, and that tau likely induces spine loss in a calcium-independent manner.

PMID:
24278327
PMCID:
PMC3835324
DOI:
10.1371/journal.pone.0080834
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Public Library of Science Icon for PubMed Central
Loading ...
Support Center