Gagnon, Katia, Rey, Amandine E., Guignard-Perret, Anne, Guyon, Aurore, Reynaud, Eve, Herbillon, Vania, Lina, Jean-Marc, Carrier, Julie, Franco, Patricia et Mazza, Stéphanie.
2023.
« Sleep stage transitions and sleep-dependent memory consolidation in children with narcolepsy–cataplexy ».
Children, vol. 10, nº 10.
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Résumé
Electroencephalographic sleep stage transitions and altered first REM sleep period transitions have been identified as biomarkers of type 1 narcolepsy in adults, but not in children. Studies on memory complaints in narcolepsy have not yet investigated sleep-dependent memory consolidation. We aimed to explore stage transitions; more specifically altered REM sleep transition and its relationship with sleep-dependent memory consolidation in children with narcolepsy. Twenty-one children with narcolepsy–cataplexy and twenty-three healthy control children completed overnight polysomnography and sleep-dependent memory consolidation tests. Overnight transition rates (number of transitions per hour), global relative transition frequencies (number of transitions between a stage and all other stages/total number of transitions � 100), overnight transitions to REM sleep (transition from a given stage to REM/total REM transitions � 100), and altered first REM sleep period transitions (transitions from wake or N1 to the first REM period) were computed. Narcoleptic children had a significantly higher overnight transition rate with a higher global relative transition frequencies to wake. A lower sleep-dependent memory consolidation score found in children with narcolepsy was associated with a higher overnight transition frequency. As observed in narcoleptic adults, 90.48% of narcoleptic children exhibited an altered first REM sleep transition. As in adults, the altered sleep stage transition is also present in children with narcolepsy–cataplexy, and a higher transition rate could have an impact on sleep-dependent memory consolidation. These potential biomarkers could help diagnose type 1 narcolepsy in children more quickly; however, further studies with larger cohorts, including of those with type 2 narcolepsy and hypersomnia, are needed.
| Type de document: | Article publié dans une revue, révisé par les pairs |
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| Professeur: | Professeur Lina, Jean-Marc |
| Affiliation: | Génie électrique |
| Date de dépôt: | 16 nov. 2023 15:51 |
| Dernière modification: | 18 déc. 2023 16:04 |
| URI: | https://espace2.etsmtl.ca/id/eprint/28011 |
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