Calcineurin inhibition with systemic FK506 treatment increases dendritic branching and dendritic spine density in healthy adult mouse brain

Tara L. Spires-Jones, Kevin Kay, Roland Matsouka, Anete Rozkalne, Rebecca A. Betensky, Bradley T. Hyman

Research output: Contribution to journalArticle

Abstract

Calcineurin has been implicated as part of a critical signaling pathway for learning and memory, and recent data suggest that calcineurin activation mediates some of the neurotoxicity of the Alzheimer related neurotoxin Aβ. Immunosuppression via calcineurin inhibition with the compound FK506 is an important treatment for organ transplant patients. Here we use Golgi impregnation techniques, along with a new survival analysis-based statistical approach for analysis of dendritic complexity, to show that in healthy adult mice one week of treatment with FK506 affects both the branching patterns and dendritic spine density of cortical neurons. These results indicate that calcineurin inhibition leads to readily detectable changes in brain morphology, further implicating calcineurin related pathways in both the function and structure of the adult brain.

Original languageEnglish (US)
Pages (from-to)260-263
Number of pages4
JournalNeuroscience letters
Volume487
Issue number3
DOIs
StatePublished - Jan 10 2011

Keywords

  • Dendrite branching
  • Dendritic spine
  • FK506
  • Sholl plot
  • Survival analysis
  • Tacrolimus

ASJC Scopus subject areas

  • Neuroscience(all)

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