Retinal vascular biomarkers for early detection and monitoring of Alzheimer's disease
Journal article
Frost, Shaun M., Kanagasinam, Yogesan, Sohrabi, Hamid R., Vignarajan, Janardhan, Bourgeat, Pierrick T., Salvado, Oliver, Villemagne, Victor Luis, Rowe, Christopher C., Macaulay, S. Lance, Szoeke, Cassandra, Ellis, Kathryn A., Ames, David, Masters, Colin L., Rainey-Smith, Stephanie R. and Martins, Ralph N.. (2013). Retinal vascular biomarkers for early detection and monitoring of Alzheimer's disease. Translational Psychiatry. https://doi.org/10.1038/tp.2012.150
Authors | Frost, Shaun M., Kanagasinam, Yogesan, Sohrabi, Hamid R., Vignarajan, Janardhan, Bourgeat, Pierrick T., Salvado, Oliver, Villemagne, Victor Luis, Rowe, Christopher C., Macaulay, S. Lance, Szoeke, Cassandra, Ellis, Kathryn A., Ames, David, Masters, Colin L., Rainey-Smith, Stephanie R. and Martins, Ralph N. |
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Abstract | The earliest detectable change in Alzheimer’s disease (AD) is the buildup of amyloid plaque in the brain. Early detection of AD, prior to irreversible neurological damage, is important for the efficacy of current interventions as well as for the development of new treatments. Although PiB-PET imaging and CSF amyloid are the gold standards for early AD diagnosis, there are practical limitations for population screening. AD-related pathology occurs primarily in the brain, but some of the hallmarks of the disease have also been shown to occur in other tissues, including the retina, which is more accessible for imaging. Retinal vascular changes and degeneration have previously been reported in AD using optical coherence tomography and laser Doppler techniques. This report presents results from analysis of retinal photographs from AD and healthy control participants from the Australian Imaging, Biomarkers and Lifestyle (AIBL) Flagship Study of Ageing. This is the first study to investigate retinal blood vessel changes with respect to amyloid plaque burden in the brain. We demonstrate relationships between retinal vascular parameters, neocortical brain amyloid plaque burden and AD. A number of RVPs were found to be different in AD. Two of these RVPs, venular branching asymmetry factor and arteriolar length-to-diameter ratio, were also higher in healthy individuals with high plaque burden (P=0.01 and P=0.02 respectively, after false discovery rate adjustment). Retinal photographic analysis shows potential as an adjunct for early detection of AD or monitoring of AD-progression or response to treatments. |
Keywords | Alzheimer’s; retina; eye; aging; screening; vasculature |
Year | 2013 |
Journal | Translational Psychiatry |
Publisher | Nature Publishing Group |
Digital Object Identifier (DOI) | https://doi.org/10.1038/tp.2012.150 |
Open access | Open access |
Research Group | Institute for Health and Ageing |
Publisher's version | |
Additional information | Translational Psychiatry is an open-access journal published by Nature Publishing Group. This work is licensed under the Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
Place of publication | United Kingdom |
https://acuresearchbank.acu.edu.au/item/89487/retinal-vascular-biomarkers-for-early-detection-and-monitoring-of-alzheimer-s-disease
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