Cerebellar dentate nucleus functional connectivity with cerebral cortex in Alzheimer's disease and memory: a seed-based approach

Giusy Olivito, Laura Serra, Camillo Marra, Carlotta Di Domenico, Carlo Caltagirone, Sofia Toniolo, Mara Cercignani, Maria Leggio, Marco Bozzali

Research output: Contribution to journalArticlepeer-review

Abstract

Alzheimer's disease (AD) is a chronic neurodegenerative disorder characterized by specific patterns of gray and white matter damage and cognitive/behavioral manifestations. The cerebellum has also been implicated in the pathophysiology of AD. Because the cerebellum is known to have strong functional connectivity (FC) with associative cerebral cortex regions, it is possible to hypothesize that it is incorporated into intrinsic FC networks relevant to cognitive manifestation of AD. In the present study, the cerebellar dentate nucleus, the largest cerebellar nucleus and the major output channel to the cerebral cortex, was chosen as the region of interest to test potential cerebellocerebral FC alterations and correlations with patients' memory impairment in a group of patients with AD. Compared to controls, patients with AD showed an increase in FC between the dentate nucleus and regions of the lateral temporal lobe. This study demonstrates that lower memory performances in AD may be related to altered FC within specific cerebellocortical functional modules, thus suggesting the cerebellar contribution to AD pathophysiology and typical memory dysfunctions.

Original languageEnglish
Pages (from-to)32-40
Number of pages9
JournalNeurobiology of Aging
Volume89
DOIs
Publication statusPublished - May 2020

Keywords

  • Alzheimer's disease
  • Cerebellum
  • Dentate nucleus
  • Functional connectivity
  • Memory
  • Resting-state fMRI

ASJC Scopus subject areas

  • Neuroscience(all)
  • Ageing
  • Clinical Neurology
  • Developmental Biology
  • Geriatrics and Gerontology

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