RT Journal Article T1 Characterization of Retinal Drusen in Subjects at High Genetic Risk of Developing Sporadic Alzheimer’s Disease: An Exploratory Analysis A1 López Cuenca, Inés A1 García Martín, Elena Salobrar A1 Gil Salgado, Inés A1 Sánchez Puebla, Lídia A1 Elvira Hurtado, Lorena A1 Fernández Albarral, José Antonio A1 Ramírez Toraño, Federico A1 Barabash, Ana A1 Frutos Lucas, Jaisalmer de A1 Salazar Corral, Juan José A1 Ramirez Sebastian, Jose Manuel A1 Ramírez Sebastián, Ana Isabel A1 Hoz Montañana, María Rosa de AB Having a family history (FH+) of Alzheimer’s disease (AD) and being a carrier of at least one ɛ4 allele of the ApoE gene are two of the main risk factors for the development of AD. AD and age-related macular degeneration (AMD) share one of the main risk factors, such as age, and characteristics including the presence of deposits (Aβ plaques in AD and drusen in AMD); however, the role of apolipoprotein E isoforms in both pathologies is controversial. We analyzed and characterized retinal drusen by optical coherence tomography (OCT) in subjects, classifying them by their AD FH (FH- or FH+) and their allelic characterization of ApoE ɛ4 (ApoE ɛ4- or ApoE ɛ4+) and considering cardiovascular risk factors (hypercholesterolemia, hypertension, and diabetes mellitus). In addition, we analyzed the choroidal thickness by OCT and the area of the foveal avascular zone with OCTA. We did not find a relationship between a family history of AD or any of the ApoE isoforms and the presence or absence of drusen. Subjects with drusen show choroidal thinning compared to patients without drusen, and thinning could trigger changes in choroidal perfusion that may give rise to the deposits that generate drusen PB MDPI SN 2075-4426 YR 2022 FD 2022-05-23 LK https://hdl.handle.net/20.500.14352/71694 UL https://hdl.handle.net/20.500.14352/71694 LA eng NO Received: 19 April 2022 / Revised: 17 May 2022 / Accepted: 19 May 2022 / Published: 23 May 2022 NO Ministerio de Ciencia e Innovación (MICINN) NO Instituto de Salud Carlos III (ISCIII) NO Ministerio de Economía y Competitividad (MINECO) NO Universidad Complutense de Madrid DS Docta Complutense RD 17 jul 2024