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Altered resting-state functional connectivity patterns in late middle-aged and older adults with obstructive sleep apnea

Altered resting-state functional connectivity patterns in late middle-aged and older adults with obstructive sleep apnea

Authors :
Villar, G. M.
Daneault, V.
Martineau-Dussault, M. E.
Baril, A. A.
Gagnon, K.
Lafond, C.
Gilbert, D.
Thompson, C.
Marchi, N. A.
Lina, J. M.
Montplaisir, J.
Carrier, J.
Gosselin, N.
Andre, C.
Villar, G. M.
Daneault, V.
Martineau-Dussault, M. E.
Baril, A. A.
Gagnon, K.
Lafond, C.
Gilbert, D.
Thompson, C.
Marchi, N. A.
Lina, J. M.
Montplaisir, J.
Carrier, J.
Gosselin, N.
Andre, C.
Publication Year :
2023

Abstract

Introduction: Obstructive sleep apnea (OSA) is increasingly recognized as a risk factor for cognitive decline, and has been associated with structural brain alterations in regions relevant to memory processes and Alzheimer’s disease. However, it is unclear whether OSA is associated with disrupted functional connectivity (FC) patterns between these regions in late middle-aged and older populations. Thus, we characterized the associations between OSA severity and resting-state FC between the default mode network (DMN) and medial temporal lobe (MTL) regions. Second, we explored whether significant FC changes differed depending on cognitive status and were associated with cognitive performance. Methods: Ninety-four participants [24 women, 65.7 ± 6.9 years old, 41% with Mild Cognitive Impairment (MCI)] underwent a polysomnography, a comprehensive neuropsychological assessment and a resting-state functional magnetic resonance imaging (MRI). General linear models were conducted between OSA severity markers (i.e., the apnea-hypopnea, oxygen desaturation and microarousal indices) and FC values between DMN and MTL regions using CONN toolbox. Partial correlations were then performed between OSA-related FC patterns and (i) OSA severity markers in subgroups stratified by cognitive status (i.e., cognitively unimpaired versus MCI) and (ii) cognitive scores in the whole sample. All analyzes were controlled for age, sex and education, and considered significant at a p < 0.05 threshold corrected for false discovery rate. Results: In the whole sample, a higher apnea-hypopnea index was significantly associated with lower FC between (i) the medial prefrontal cortex and bilateral hippocampi, and (ii) the left hippocampus and both the posterior cingulate cortex and precuneus. FC patterns were not associated with the oxygen desaturation index, or micro-arousal index. When stratifying the sample according to cognitive status, all associations remained significant in cognitively unimpaired i

Details

Database :
OAIster
Notes :
application/pdf, Villar, G. M., Daneault, V., Martineau-Dussault, M. E., Baril, A. A., Gagnon, K., Lafond, C., Gilbert, D., Thompson, C., Marchi, N. A., Lina, J. M., Montplaisir, J., Carrier, J., Gosselin, N. et Andre, C.. 2023. « Altered resting-state functional connectivity patterns in late middle-aged and older adults with obstructive sleep apnea ». Frontiers in Neurology, vol. 14. Compte des citations dans Scopus : 4., English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1405283601
Document Type :
Electronic Resource