The effects of white matter hyperintensities on MEG power spectra in population with mild cognitive impairment
Torres-Simon, Lucia (Universidad Complutense de Madrid. Departamento de Psicología Experimental)
Cuesta, Pablo (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos)
del Cerro-Leon, Alberto (Universidad Complutense de Madrid. Departamento de Psicología Experimental)
Chino, Brenda (Universitat Autònoma de Barcelona. Institut de Neurociències)
Orozco, Lucia H. (Universidad Complutense de Madrid. Centro de Neurociencia Cognitiva y Computacional)
Marsh, Elisabeth B. (Department of Neurology, The Johns Hopkins School of Medicine)
Gil Gregorio, Pedro (Hospital Universitario Clínico San Carlos (Madrid))
Maestu, Fernando (Instituto de Investigación Sanitaria del Hospital Clínico San Carlos)

Data:	2023
Resum:	Cerebrovascular disease is responsible for up to 20% of cases of dementia worldwide, but also it is a major comorbid contributor to the progression of other neurodegenerative diseases, like Alzheimer's disease. White matter hyperintensities (WMH) are the most prevalent imaging marker in cerebrovascular disease. The presence and progression of WMH in the brain have been associated with general cognitive impairment and the risk to develop all types of dementia. The aim of this piece of work is the assessment of brain functional differences in an MCI population based on the WMH volume. One-hundred and twenty-nine individuals with mild cognitive impairment (MCI) underwent a neuropsychological evaluation, MRI assessment (T1 and Flair), and MEG recordings (5 min of eyes closed resting state). Those participants were further classified into vascular MCI (vMCI; n = 61, mean age 75 ± 4 years, 35 females) or non-vascular MCI (nvMCI; n = 56, mean age 72 ± 5 years, 36 females) according to their WMH total volume, assessed with an automatic detection toolbox, LST (SPM12). We used a completely data-driven approach to evaluate the differences in the power spectra between the groups. Interestingly, three clusters emerged: One cluster with widespread larger theta power and two clusters located in both temporal regions with smaller beta power for vMCI compared to nvMCI. Those power signatures were also associated with cognitive performance and hippocampal volume. Early identification and classification of dementia pathogenesis is a crucially important goal for the search for more effective management approaches. These findings could help to understand and try to palliate the contribution of WMH to particular symptoms in mixed dementia progress.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Cerebrovascular disease (CVD) ; Small vessel cerebral disease ; White matter hyperintensites ; Mild cognitive impairment ; Magnetoencephalography (MEG) ; Power spectra analysis
Publicat a:	Frontiers in human neuroscience, Vol. 17 (february 2023) , ISSN 1662-5161

DOI: 10.3389/fnhum.2023.1068216
PMID: 36875239

11 p, 2.4 MB

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