Leonie C P Banning1, Inez H G B Ramakers2, Kay Deckers3, Frans R J Verhey4, Pauline Aalten5. 1. Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands. Electronic address: leonie.banning@maastrichtuniversity.nl. 2. Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands. Electronic address: i.ramakers@maastrichtuniversity.nl. 3. Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands. Electronic address: kay.deckers@maastrichtuniversity.nl. 4. Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands. Electronic address: f.verhey@maastrichtuniversity.nl. 5. Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands. Electronic address: p.aalten@maastrichtuniversity.nl.
Abstract
OBJECTIVE: APOE status has been associated to affective symptoms in cognitively impaired subjects, with conflicting results. METHODS: Databases CINAHL, Embase, PsychINFO and PubMed were searched for studies evaluating APOE genotype with affective symptoms in MCI and AD dementia. Symptoms were meta-analyzed separately and possible sources of heterogeneity were examined. RESULTS: Fifty-three abstracts fulfilled the eligibility criteria. No association was found between the individual symptoms and APOE ε4 carriership or zygosity. For depression and anxiety, only pooled unadjusted estimates showed positive associations with between-study heterogeneity, which could be explained by variation in study design, setting and way of symptom assessment. CONCLUSIONS: There is no evidence that APOE ε4 carriership or zygosity is associated with the presence of depression, anxiety, apathy, agitation, irritability or sleep disturbances in cognitively impaired subjects. Future research should shift its focus from this single polymorphism to a more integrated view of other biological factors.
OBJECTIVE:APOE status has been associated to affective symptoms in cognitively impaired subjects, with conflicting results. METHODS: Databases CINAHL, Embase, PsychINFO and PubMed were searched for studies evaluating APOE genotype with affective symptoms in MCI and AD dementia. Symptoms were meta-analyzed separately and possible sources of heterogeneity were examined. RESULTS: Fifty-three abstracts fulfilled the eligibility criteria. No association was found between the individual symptoms and APOE ε4 carriership or zygosity. For depression and anxiety, only pooled unadjusted estimates showed positive associations with between-study heterogeneity, which could be explained by variation in study design, setting and way of symptom assessment. CONCLUSIONS: There is no evidence that APOE ε4 carriership or zygosity is associated with the presence of depression, anxiety, apathy, agitation, irritability or sleep disturbances in cognitively impaired subjects. Future research should shift its focus from this single polymorphism to a more integrated view of other biological factors.
Authors: Irina L Kuznetsova; Natalya V Ponomareva; Ekaterina A Alemastseva; Andrey D Manakhov; Tatyana V Andreeva; Fedor E Gusev; Evgeny I Rogaev Journal: Genes (Basel) Date: 2022-01-18 Impact factor: 4.096
Authors: Willem S Eikelboom; Michel Pan; Rik Ossenkoppele; Michiel Coesmans; Jennifer R Gatchel; Zahinoor Ismail; Krista L Lanctôt; Corinne E Fischer; Moyra E Mortby; Esther van den Berg; Janne M Papma Journal: Alzheimers Res Ther Date: 2022-04-04 Impact factor: 8.823