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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Geriatr+Psychiatry
2013 ; 21
(6
): 509-19
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Neuropsychiatric features of frontal lobe dysfunction in autopsy-confirmed
patients with lewy bodies and "pure" Alzheimer disease
#MMPMID23567425
Peavy GM
; Salmon DP
; Edland SD
; Tam S
; Hansen LA
; Masliah E
; Galasko D
; Hamilton JM
Am J Geriatr Psychiatry
2013[Jun]; 21
(6
): 509-19
PMID23567425
show ga
OBJECTIVE: To compare patients with autopsy-confirmed Alzheimer disease (AD) and
dementia with Lewy bodies (DLB) on the frequency of behaviors related to frontal
system dysfunction and the association of these behaviors with dementia severity.
METHODS: We performed a cross-sectional survey of a longitudinal cohort at a
university research center for AD on a volunteer sample of 19 DLB and 38 AD
participants with autopsy-confirmed diagnoses, similar in age (DLB: 77.3, AD:
77.5), education (DLB: 15.2, AD: 14.7), and Mini-Mental State Examination (MMSE)
score (DLB: 20.6, AD: 20.5), with impairment ranging from mild deficits to
moderate dementia. The Frontal Systems Behavior Scale (FrSBe)-Family Rating Form
assessing patient apathy, disinhibition, and executive dysfunction by a
knowledgeable informant was used. RESULTS: A two-way analysis of variance with
the FrSBe total as the dependent variable revealed a significant MMSE by
diagnosis interaction (F(1,53) = 9.34, p = 0.004). Mean FrSBe total for AD
patients showed significant impairment across the range of dementia severity,
whereas it was relatively preserved for DLB patients in the early stage of
disease. The interaction term showed the same pattern for the executive
dysfunction (F(1,53) = 7.62, p = 0.008), disinhibition (F(1,53) = 4.90, p =
0.031), and apathy (F(1,53) = 9.77, p = 0.003) subscales. CONCLUSION: Although
frontal behavioral symptoms in AD patients were present regardless of stage of
dementia, DLB patients showed significant frontal dysfunction only in later
stages. Results suggest that frontal subcortical circuits associated with
behaviors assessed by the FrSBe are affected early in AD but not until later
stages in DLB. Assessing specific behaviors related to frontal systems, coupled
with stage of cognitive decline, may aid in clinical differentiation of AD and
DLB.