Cited by 384Retinal Diseases and TreatmentsRetinal Development and DisordersRetinal Imaging and Analysis

SUBRETINAL DRUSENOID DEPOSITS IN NON-NEOVASCULAR AGE-RELATED MACULAR DEGENERATION: Morphology, Prevalence, Topography, and Biogenesis Model

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Curcio, Christine A., Messinger, Jeffrey D., Sloan, Kenneth R., McGwin, Gerald, Medeiros, Nancy E., Spaide, Richard F.·2013·Retina

Abstract

In Brief Purpose: To characterize the morphology, prevalence, and topography of subretinal drusenoid deposits, a candidate histological correlate of reticular pseudodrusen, with reference to basal linear deposit (BlinD), a specific lesion of age-related macular degeneration, and to propose a biogenesis model for both lesion. Methods: Donor eyes with median death-to-preservation of 2:40 hours were postfixed in osmium tannic acid paraphenylenediamine and prepared for macula-wide high-resolution digital sections. Annotated thicknesses of 21 chorioretinal layers were determined at standard locations in sections through the fovea and the superior perifovea. Results: In 22 eyes of 20 white donors (83.1 ± 7.7 years), SDD appeared as isolated or confluent drusenoid dollops punctuated by tufts of retinal pigment epithelium apical processes and associated with photoreceptor perturbation. Subretinal drusenoid deposits and BlinD were detected in 85 and 90% of non-neovascular age-related macular degeneration donors, respectively. Subretinal drusenoid deposit was thick (median, 9.4 μm) and more abundant in the perifovea than in the fovea (P < 0.0001). BlinD was thin (median, 2.1 μm) and more abundant in the fovea than in the perifovea (P < 0.0001). Conclusion: Subretinal drusenoid deposits and BlinD prevalence in age-related macular degeneration eyes are high. Subretinal drusenoid deposits organized morphology, topography, and impact on surrounding photoreceptors imply specific processes of biogenesis. Contrasting topographies of subretinal drusenoid deposits and BlinD suggest relationships with differentiable aspects of rod and cone physiology, respectively. A 2-lesion 2-compartment biogenesis model incorporating outer retinal lipid homeostasis is presented. The largest series of eyes devoted to histological characterization of subretinal drusenoid deposit, a candidate correlate of reticular pseudodrusen, shows that it is a stereotyped extracellular lesion that is as prevalent in age-related macular degeneration eyes as basal linear deposit. A 2-lesion 2-compartment biogenesis model invoking photoreceptor lipid homeostasis is proposed.

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  • The absence of basal linear deposits in Klc1−/− retina is to be expected, given that basal linear deposits form mostly in the fovea, a small central region of the macula that contains only cone photoreceptors, which is not present in a mouse retina.

    “This difference is to be expected, given that basal linear deposits form mostly in the fovea (Curcio et al., 2013), a small central region of the macula that contains only cone photoreceptors (Osterberg, 1935), which is not present in a mouse retina.”

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  1. [69]Dowhan W Bogdanov M Functional roles of lipids in membranes Biochemistry of Lipids, Lipoproteins and Membranes Vance DE Vance JE Amsterdam Elsevier 2002 1 35

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Authors
Curcio, C. A., Messinger, J. D., Sloan, K. R., McGwin, G., Medeiros, N. E., & Spaide, R. F.
Affiliations
  • University of Alabama at Birmingham (US)
  • Vitreous Retina Macula Consultants of New York (US)
Corresponding author
  • Curcio, Christine A.
  • Messinger, Jeffrey D.
Venue
Retina
Published
2013-02
Volume
33
Issue
2
Pages
265-276
ISSN
0275-004X (ISSN-L)
OpenAlex
W2045011938
Cited by
384
References
86
Citations by year
2026: 25 · 2025: 15 · 2024: 27 · 2023: 18 · 2022: 35 · 2021: 28 · 2020: 28 · 2019: 27 · 2018: 37 · 2017: 32 · 2016: 32 · 2015: 35 · 2014: 36 · 2013: 9
FWCI
23.94
Type
journal article
Language
en
Open access
Locations
  • Retina (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Eye Institute (R01EY006109, EY06109)
Topics
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Retinal Imaging and Analysis
Keywords
subretinal drusenoid deposits, reticular pseudodrusen, non-neovascular age-related macular degeneration, retinal pigment epithelium, perifovea, fovea
MeSH terms
Aged, 80 and over, Female, Fovea Centralis, Humans, Male, Models, Biological, Tissue Donors, Retinal Drusen, Eye Diseases, Hereditary, Prevalence, Bruch Membrane, Topography, Medical, White People, Retinal Pigment Epithelium, Geographic Atrophy

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