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Pupil Response Biomarkers for Early Detection and Monitoring of Alzheimer’s Disease

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Introduction A screening process that could provide early and accurate diagnosis or prognosis for Alzheimer’s disease (AD) would enable earlier intervention, and enable current and future treatments to be more effective. Ocular pathology and changes to vision and ocular function are being investigated for early detection and monitoring of AD. Objective To explore the relationship between pupil flash response (PFR) parameters, AD and brain amyloid plaque burden. Methods NineteenADandseventyhealthy control (HC) participants were recruited from the Australian Imaging, Biomarkers and Lifestyle (AIBL) Flagship Study of Ageing. Thepotential correlations betweenPFRparameters and1) AD and 2) brain amyloid plaque burden in the HC group (as a pre-clinical feature of AD), were investigated in this study. Results Our results demonstratestatistically significant relationships between PFR parameters, neocortical plaque burden and AD. A logistical model combining PFR parameters provided AD-classification performance with sensitivity 84.1%, specificity 78.3% and area under the curve 89.6%. Furthermore, some of the AD specific PFR parameters were also associated withneocortical plaque burden in pre-clinical AD. Conclusions These PFR changes show potential as an adjunct for noninvasive, cost-effective screening for pre-clinical AD.
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Keywords: Alzheimer’s; aging; diagnosis; pupil; screening; vision

Document Type: Research Article

Publication date: 2013-11-01

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  • Current Alzheimer Research publishes peer-reviewed frontier review and research articles on all areas of Alzheimer's disease. This multidisciplinary journal will help in understanding the neurobiology, genetics, pathogenesis, and treatment strategies of Alzheimer's disease. The journal publishes objective reviews written by experts and leaders actively engaged in research using cellular, molecular, and animal models. The journal also covers original articles on recent research in fast emerging areas of molecular diagnostics, brain imaging, drug development and discovery, and clinical aspects of Alzheimer's disease. Manuscripts are encouraged that relate to the synergistic mechanism of Alzheimer's disease with other dementia and neurodegenerative disorders. Book reviews, meeting reports and letters-to-the-editor are also published. The journal is essential reading for researchers, educators and physicians with interest in age-related dementia and Alzheimer's disease. Current Alzheimer Research provides a comprehensive 'bird's-eye view' of the current state of Alzheimer's research for neuroscientists, clinicians, health science planners, granting, caregivers and families of this devastating disease.
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