A SPECT study of sleep disturbance and Alzheimer's disease.

Abstract:

BACKGROUND/AIMS:This study aimed to investigate the possible association of regional cerebral perfusion and sleep loss in Alzheimer's disease (AD). METHODS:55 AD patients were characterized as having (SL) or not having (NSL) nocturnal sleep loss based on standard AD scales assessing sleep over the previous 4 weeks. (99m)Tc-ethylcysteinate dimer SPECT scans were performed in a relaxed, wakeful state. Whole-brain analysis using Statistical Parametrical Mapping (SPM5) was performed to compare perfusion across groups. In addition, the AD groups were compared to normal control (NC) subjects of comparable age and gender to provide a context for interpretation of findings. RESULTS:SPM analysis showed increased perfusion in the right middle frontal gyrus (R-MFG, Brodman area 9, p = 0.016, familywise-error-corrected) in SL versus NSL patients. Comparison with NC subjects confirmed that perfusion in the R-MFG among SL patients did not exceed that found in NCs (relative rather than absolute hyperperfusion). CONCLUSIONS:In this sample of mild-to-moderate AD patients, relative hyperperfusion in the R-MFG is associated with reports of SL. This region may play a role in regulating sleep.

authors

Ismail Z,Herrmann N,Francis PL,Rothenburg LS,Lobaugh NJ,Leibovitch FS,Black SE,Lanctôt KL

doi

10.1159/000203889

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

254-9

issue

3

eissn

1420-8008

issn

1421-9824

pii

000203889

journal_volume

27

pub_type

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