TY - JOUR
T1 - Abnormalities of functional cortical source connectivity of resting-state electroencephalographic alpha rhythms are similar in patients with mild cognitive impairment due to Alzheimer's and Lewy body diseases
AU - Babiloni, Claudio
AU - Del Percio, Claudio
AU - Pascarelli, Maria Teresa
AU - Lizio, Roberta
AU - Noce, Giuseppe
AU - Lopez, Susanna
AU - Rizzo, Marco
AU - Ferri, Raffaele
AU - Soricelli, Andrea
AU - Nobili, Flavio
AU - Arnaldi, Dario
AU - Famà, Francesco
AU - Orzi, Francesco
AU - Buttinelli, Carla
AU - Giubilei, Franco
AU - Salvetti, Marco
AU - Cipollini, Virginia
AU - Franciotti, Raffaella
AU - Onofrj, Marco
AU - Stirpe, Paola
AU - Fuhr, Peter
AU - Gschwandtner, Ute
AU - Ransmayr, Gerhard
AU - Aarsland, Dag
AU - Parnetti, Lucilla
AU - Farotti, Lucia
AU - Marizzoni, Moira
AU - D'Antonio, Fabrizia
AU - De Lena, Carlo
AU - Güntekin, Bahar
AU - Hanoğlu, Lutfu
AU - Yener, Görsev
AU - Emek-Savaş, Derya Durusu
AU - Triggiani, Antonio Ivano
AU - Taylor, John Paul
AU - McKeith, Ian
AU - Stocchi, Fabrizio
AU - Vacca, Laura
AU - Hampel, Harald
AU - Frisoni, Giovanni B
AU - De Pandis, Maria Francesca
AU - Bonanni, Laura
N1 - Copyright © 2019 Elsevier Inc. All rights reserved.
PY - 2019/5
Y1 - 2019/5
N2 - Previous evidence has shown different resting-state eyes-closed electroencephalographic delta (<4 Hz) and alpha (8-10.5 Hz) source connectivity in subjects with dementia due to Alzheimer's (ADD) and Lewy body (DLB) diseases. The present study tested if the same differences may be observed in the prodromal stages of mild cognitive impairment (MCI). Here, clinical and resting-state eyes-closed electroencephalographic data in age-, gender-, and education-matched 30 ADMCI, 23 DLBMCI, and 30 healthy elderly (Nold) subjects were available in our international archive. Mini-Mental State Evaluation (MMSE) score was matched in the ADMCI and DLBMCI groups. The eLORETA freeware estimated delta and alpha source connectivity by the tool called lagged linear connectivity (LLC). Area under receiver operating characteristic curve (AUROCC) indexed the classification accuracy among individuals. Results showed that widespread interhemispheric and intrahemispheric LLC solutions in alpha sources were abnormally lower in both MCI groups compared with the Nold group, but with no differences were found between the 2 MCI groups. AUROCCs of LLC solutions in alpha sources exhibited significant accuracies (0.72-0.75) in the discrimination of Nold versus ADMCI-DLBMCI individuals, but not between the 2 MCI groups. These findings disclose similar abnormalities in ADMCI and DLBMCI patients as revealed by alpha source connectivity. It can be speculated that source connectivity mostly reflects common cholinergic impairment in prodromal state of both AD and DLB, before a substantial dopaminergic derangement in the dementia stage of DLB.
AB - Previous evidence has shown different resting-state eyes-closed electroencephalographic delta (<4 Hz) and alpha (8-10.5 Hz) source connectivity in subjects with dementia due to Alzheimer's (ADD) and Lewy body (DLB) diseases. The present study tested if the same differences may be observed in the prodromal stages of mild cognitive impairment (MCI). Here, clinical and resting-state eyes-closed electroencephalographic data in age-, gender-, and education-matched 30 ADMCI, 23 DLBMCI, and 30 healthy elderly (Nold) subjects were available in our international archive. Mini-Mental State Evaluation (MMSE) score was matched in the ADMCI and DLBMCI groups. The eLORETA freeware estimated delta and alpha source connectivity by the tool called lagged linear connectivity (LLC). Area under receiver operating characteristic curve (AUROCC) indexed the classification accuracy among individuals. Results showed that widespread interhemispheric and intrahemispheric LLC solutions in alpha sources were abnormally lower in both MCI groups compared with the Nold group, but with no differences were found between the 2 MCI groups. AUROCCs of LLC solutions in alpha sources exhibited significant accuracies (0.72-0.75) in the discrimination of Nold versus ADMCI-DLBMCI individuals, but not between the 2 MCI groups. These findings disclose similar abnormalities in ADMCI and DLBMCI patients as revealed by alpha source connectivity. It can be speculated that source connectivity mostly reflects common cholinergic impairment in prodromal state of both AD and DLB, before a substantial dopaminergic derangement in the dementia stage of DLB.
KW - Aged
KW - Alpha Rhythm
KW - Alzheimer Disease/complications
KW - Cerebral Cortex/physiopathology
KW - Cognitive Dysfunction/etiology
KW - Female
KW - Humans
KW - Lewy Body Disease/complications
KW - Male
KW - Rest/physiology
U2 - 10.1016/j.neurobiolaging.2019.01.013
DO - 10.1016/j.neurobiolaging.2019.01.013
M3 - Article
C2 - 30797169
SN - 0197-4580
VL - 77
SP - 112
EP - 127
JO - Neurobiology of Aging
JF - Neurobiology of Aging
ER -