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Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition

INTRODUCTION: We performed a systematic review and meta‐analysis of the association between retinal imaging parameters and Alzheimer's disease (AD). METHODS: PubMed, EMBASE, and Scopus were systematically searched for prospective and observational studies. Included studies had AD case definitio...

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Autores principales: Ashraf, Gizem, McGuinness, Myra, Khan, Muhammad Azaan, Obtinalla, Czarina, Hadoux, Xavier, van Wijngaarden, Peter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10210353/
https://www.ncbi.nlm.nih.gov/pubmed/37250908
http://dx.doi.org/10.1002/dad2.12421
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author Ashraf, Gizem
McGuinness, Myra
Khan, Muhammad Azaan
Obtinalla, Czarina
Hadoux, Xavier
van Wijngaarden, Peter
author_facet Ashraf, Gizem
McGuinness, Myra
Khan, Muhammad Azaan
Obtinalla, Czarina
Hadoux, Xavier
van Wijngaarden, Peter
author_sort Ashraf, Gizem
collection PubMed
description INTRODUCTION: We performed a systematic review and meta‐analysis of the association between retinal imaging parameters and Alzheimer's disease (AD). METHODS: PubMed, EMBASE, and Scopus were systematically searched for prospective and observational studies. Included studies had AD case definition based on brain amyloid beta (Aβ) status. Study quality assessment was performed. Random‐effects meta‐analyses of standardized mean difference, correlation, and diagnostic accuracy were conducted. RESULTS: Thirty‐eight studies were included. There was weak evidence of peripapillary retinal nerve fiber layer thinning on optical coherence tomography (OCT) (p = 0.14, 11 studies, n = 828), increased foveal avascular zone area on OCT‐angiography (p = 0.18, four studies, n = 207), and reduced arteriole and venule vessel fractal dimension on fundus photography (p < 0.001 and p = 0.08, respectively, three studies, n = 297) among AD cases. DISCUSSION: Retinal imaging parameters appear to be associated with AD. Small study sizes and heterogeneity in imaging methods and reporting make it difficult to determine utility of these changes as AD biomarkers. HIGHLIGHTS: We performed a systematic review on retinal imaging and Alzheimer's disease (AD). We only included studies in which cases were based on brain amyloid beta status. Several retinal biomarkers were associated with AD but clinical utility is uncertain. Studies should focus on biomarker‐defined AD and use standardized imaging methods.
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spelling pubmed-102103532023-05-26 Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition Ashraf, Gizem McGuinness, Myra Khan, Muhammad Azaan Obtinalla, Czarina Hadoux, Xavier van Wijngaarden, Peter Alzheimers Dement (Amst) Review Articles INTRODUCTION: We performed a systematic review and meta‐analysis of the association between retinal imaging parameters and Alzheimer's disease (AD). METHODS: PubMed, EMBASE, and Scopus were systematically searched for prospective and observational studies. Included studies had AD case definition based on brain amyloid beta (Aβ) status. Study quality assessment was performed. Random‐effects meta‐analyses of standardized mean difference, correlation, and diagnostic accuracy were conducted. RESULTS: Thirty‐eight studies were included. There was weak evidence of peripapillary retinal nerve fiber layer thinning on optical coherence tomography (OCT) (p = 0.14, 11 studies, n = 828), increased foveal avascular zone area on OCT‐angiography (p = 0.18, four studies, n = 207), and reduced arteriole and venule vessel fractal dimension on fundus photography (p < 0.001 and p = 0.08, respectively, three studies, n = 297) among AD cases. DISCUSSION: Retinal imaging parameters appear to be associated with AD. Small study sizes and heterogeneity in imaging methods and reporting make it difficult to determine utility of these changes as AD biomarkers. HIGHLIGHTS: We performed a systematic review on retinal imaging and Alzheimer's disease (AD). We only included studies in which cases were based on brain amyloid beta status. Several retinal biomarkers were associated with AD but clinical utility is uncertain. Studies should focus on biomarker‐defined AD and use standardized imaging methods. John Wiley and Sons Inc. 2023-05-25 /pmc/articles/PMC10210353/ /pubmed/37250908 http://dx.doi.org/10.1002/dad2.12421 Text en © 2023 The Authors. Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring published by Wiley Periodicals, LLC on behalf of Alzheimer's Association. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Review Articles
Ashraf, Gizem
McGuinness, Myra
Khan, Muhammad Azaan
Obtinalla, Czarina
Hadoux, Xavier
van Wijngaarden, Peter
Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
title Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
title_full Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
title_fullStr Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
title_full_unstemmed Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
title_short Retinal imaging biomarkers of Alzheimer's disease: A systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
title_sort retinal imaging biomarkers of alzheimer's disease: a systematic review and meta‐analysis of studies using brain amyloid beta status for case definition
topic Review Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10210353/
https://www.ncbi.nlm.nih.gov/pubmed/37250908
http://dx.doi.org/10.1002/dad2.12421
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