Behavioral psychological symptoms of dementia and functional connectivity changes: a network-based study

Serra, Laura, Bruschini, Michela, Di Domenico, Carlotta, Mancini, Matteo, Bechi Gabrielli, Giulia, Bonarota, Sabrina, Caltagirone, Carlo, Cercignani, Mara, Marra, Camillo and Bozzali, Marco (2020) Behavioral psychological symptoms of dementia and functional connectivity changes: a network-based study. Neurobiology of Aging, 94. pp. 196-206. ISSN 0197-4580

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Abstract

Behavioral and psychological symptoms of dementia (BPSD) are commonly observed since the early stage of Alzheimer's disease (AD) associated with structural brain changes. It is conceivable that they may also relate to functional brain changes. This resting-state functional MRI (RS-fMRI) study investigated the alterations within functional brain networks of a cohort of AD patients at different clinical stages who presented with BPSD. One hundred one AD patients and 56 patients with amnestic mild cognitive impairment underwent a neuropsychological evaluation including the Neuropsychiatry Inventory-12 (NPI-12). All patients and 35 healthy controls (HS) underwent 3T-MRI. Factor analysis was used to extract the principal factors from NPI-12, while RS-fMRI data were processed using graph theory to investigate functional connectivity. Five factors were extracted from NPI-12. Sixty-two percent of patients showed BPSD and functional brain connectivity changes in various networks compared to those without BPSD and HS. These changes contributed to account for patients' BPSD. This work opens new perspectives in terms of nonpharmacological interventions that might be designed to modulate brain connectivity and improve patients' BPSD.

Item Type: Article
Keywords: AD, BPSD, Brain functional connectivity, MRI, a-MCI
Schools and Departments: Brighton and Sussex Medical School > Neuroscience
Subjects: R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry > RC0346 Neurology. Diseases of the nervous system Including speech disorders
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 11 Dec 2020 15:27
Last Modified: 15 Dec 2020 15:00
URI: http://sro.sussex.ac.uk/id/eprint/95605

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