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Issue title: Alzheimer's Disease: Detection, Prevention, and Preclinical Treatment
Guest editors: Jack C. de la Torre
Article type: Review Article
Authors: Cheung, Carol Yim-luia; b; c; e; * | Ong, Yi-Tinga; d | Ikram, M. Kamrana; b; c; e | Chen, Christopherd; e; f | Wong, Tien Yina; b; c
Affiliations: [a] Singapore Eye Research Institute, Singapore National Eye Centre, Singapore | [b] Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore | [c] Duke-NUS Graduate Medical School, Singapore | [d] NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore | [e] Memory Aging and Cognition Centre, National University Health System, Singapore | [f] Department of Pharmacology, National University of Singapore, Singapore
Correspondence: [*] Correspondence to: Dr. Carol Y. Cheung, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower Level 6, 169856, Singapore. Tel.: +65 6576 7233; E-mail: [email protected].
Abstract: Although cerebral small vessel disease has been implicated in the development of Alzheimer's disease (AD), the cerebral microcirculation is difficult to visualize directly in vivo. As the retina and the brain share similar embryological origin, anatomical features and physiological properties with the cerebral small vessels, the retinal vessels thus offer a unique and easily accessible “window” to study the correlates and consequences of cerebral small vessel diseases in vivo. Retinal microvasculature can now be visualized, quantified and monitored non-invasively using state-of-the-art retinal imaging technology. Recent clinic- and population-based studies have demonstrated a link between retinal vascular changes and dementia, in particular AD, and cerebral small vessel disease. In this review, we summarize the current findings on retinal vascular changes such as retinopathy signs and changes in novel retinal vascular network parameters and retinal vascular caliber with dementia, cognitive dysfunction and cerebral small vessel disease, and discuss possible future research to further evaluate whether retinal vascular imaging might help to elucidate vascular mechanisms contributing to the development of AD and provide additional value in predicting who may be at risk of developing AD.
Keywords: Alzheimer's disease, microcirculation, retina, retinal vascular changes, retinal vasculature, small vessel disease
DOI: 10.3233/JAD-141596
Journal: Journal of Alzheimer's Disease, vol. 42, no. s4, pp. S339-S352, 2014
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