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Apolipoprotein E Genotype Influences Presence and Severity of Delusions and Aggressive Behavior in Alzheimer Disease
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Apolipoprotein E Genotype Influences Presence and Severity of Delusions and Aggressive Behavior in Alzheimer Disease
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Journal Article
Apolipoprotein E Genotype Influences Presence and Severity of Delusions and Aggressive Behavior in Alzheimer Disease
2007
Overview
Aim: We investigated differences in the prevalence and severity of 10 neuropsychiatric and behavioral symptoms according to apolipoprotein E (APOE) genotype and dementia severity in Alzheimer disease (AD). Methods: Neuropsychiatric and behavioral symptoms of 110 AD patients were assessed using the Neuropsychatric Inventory. Dementia severity was assessed using the Mini Mental State Examination (MMSE). Results: There were 27 APOE-Ε4-negative patients, 65 heterozygous patients and 18 homozygous patients. There was a significant association between the number of APOE Ε4 alleles and prevalence and severity of neuropsychiatric and behavioral symptoms that was mainly attributable to delusions and agitation/aggression, which were more common and severer among homozygous APOE Ε4 carriers. In addition, the presence of hallucinations, anxiety, apathy and aberrant motor behavior increased with deteriorating MMSE score, independently of APOE Ε4 status. Conclusions: The present study showed that the APOE Ε4 genotype modifies neuropsychiatric and behavioral phenotype in AD. In particular, it was shown that delusions and agitation/aggression were more common and severer among homozygous APOE Ε4 carriers than among heterozygous or APOE-Ε4-negative patients.
Publisher
Karger,S. Karger AG
Subject
/ Alzheimer Disease - diagnosis
/ Alzheimer Disease - epidemiology
/ Alzheimer Disease - genetics
/ Anxiety
/ Apathy
/ Apolipoprotein E4 - genetics
/ Behavior
/ Biological and medical sciences
/ Dementia
/ Disease
/ Female
/ Genotype
/ Glaucoma and intraocular pressure
/ Humans
/ Male
/ Mini-Mental State Examination
/ Patients
/ Psychomotor Agitation - diagnosis
/ Psychomotor Agitation - genetics
/ Psychomotor Agitation - physiopathology
/ Severity
/ Symptoms
/ Vascular diseases and vascular malformations of the nervous system
