Periodic limb movements in sleep are linked to decreased hippocampus and amygdala volumes in the population-based BiDirect Study.
Sleep
; 46(2)2023 02 08.
Article
en En
| MEDLINE
| ID: mdl-36330698
ABSTRACT
STUDY OBJECTIVES:
Even though numerous studies indicate that sleep disorders are associated with altered brain morphology, MRI studies focusing on periodic limb movements in sleep (PLMS) are scarce. Our aim was to investigate the association of PLMS with global and regional gray matter volumes as well as white matter hyperintensity (WMH) volume.METHODS:
One hundred and eighty-nine subjects (57.0 ± 7.8 years, women 50.5%) of the population-based BiDirect Study underwent a single-night polysomnography (PSG). Standard criteria of the American Academy of Sleep Medicine were applied to evaluate sleep characteristics and calculate the PLMS index (PLMSI). T1w and FLAIR images were acquired with cerebral MRI at 3 Tesla. Voxel-based morphometry was performed to determine the total gray matter volume as well as the volume of cortical segments and subcortical gray matter areas using SPM12 and CAT12. The WMH volume was quantified with the Brain Intensity AbNormality Classification Algorithm. The independent relationship between MRI markers and PLMSI was analyzed using multivariable linear regression with adjustment for age, sex, body mass index, intracranial volume, PSG scorer, PSG device, sleep apnea, and the use of antidepressants.RESULTS:
PLMSI was not significantly related to global gray matter volume and WMH volume. However, significant inverse associations of the PLMSI with the volume of the hippocampus (left and right hemisphere) and left amygdala were observed.CONCLUSIONS:
A significant relationship between a higher PLMSI and lower volumes of the hippocampus and amygdala was found among the participants of the BiDirect Study. Since these associations are based on exploratory analyses, further replications are required before drawing firm conclusions.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Síndrome de Mioclonía Nocturna
Tipo de estudio:
Risk_factors_studies
Límite:
Female
/
Humans
Idioma:
En
Revista:
Sleep
Año:
2023
Tipo del documento:
Article
País de afiliación:
Alemania