Cited by 270Retinal Diseases and TreatmentsCholesterol and Lipid MetabolismLipoproteins and Cardiovascular Health

Apolipoprotein B in Cholesterol-Containing Drusen and Basal Deposits of Human Eyes with Age-Related Maculopathy

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Malek, Goldis, Li, Chuan-Ming, Guidry, Clyde, Medeiros, Nancy E., Curcio, Christine A.·2003·The American Journal of Pathology

Abstract

Lipids accumulate in Bruch's membrane (BrM), a specialized vascular intima of the eye, and in extracellular lesions associated with aging and age-related maculopathy (ARM). We tested the hypothesis that ARM and atherosclerotic cardiovascular disease share molecules and mechanisms pertaining to extracellular lipid accumulation by localizing cholesterol and apolipoprotein B (apo B) in BrM, basal deposits, and drusen. Human donor eyes were preserved <4 hours postmortem and cryosectioned. Sections were stained with traditional lipid stains and filipin for esterified and unesterified cholesterol or probed with antibodies to apo B, apo E, and apo C-III. Normal adult retinal pigment epithelium (RPE) was subjected to RT-PCR and Western blot analysis for apolipoprotein mRNA and protein. Esterified and unesterified cholesterol was present in all drusen and basal deposits of ARM and normal eyes. Both apo B and apo E but not apo C-III were found in BrM, drusen, and basal deposits. Fewer macular drusen were stained by traditional lipid stains and apolipoprotein antibodies than peripheral drusen. RPE contained apo B and apo E mRNA and protein. Finding cholesterol and apo B in sub-RPE deposits links ARM with important molecules and mechanisms in atherosclerosis initiation and progression. The combination of apo B mRNA and protein in RPE raises the possibility that intraocular assembly of apo B-containing lipoproteins is a pathway involved in forming cholesterol-enriched lesions in ARM.

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Authors
Malek, G., Li, C.-M., Guidry, C., Medeiros, N. E., & Curcio, C. A.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Curcio, Christine A.
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2003-02
Volume
162
Issue
2
Pages
413-425
ISSN
0002-9440 (ISSN-L)
OpenAlex
W1999383714
Cited by
270
References
81
Citations by year
2026: 7 · 2025: 11 · 2024: 19 · 2023: 6 · 2022: 8 · 2021: 11 · 2020: 7 · 2019: 10 · 2018: 12 · 2017: 11 · 2016: 5 · 2015: 9 · 2014: 14 · 2013: 11 · 2012: 10
FWCI
17.61
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (EY06109, T32-EY07033, EY13258)
  • International Retinal Research Foundation
  • Research to Prevent Blindness
Topics
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
Keywords
apolipoprotein B, age-related maculopathy, drusen, Bruch's membrane, cholesterol accumulation, apolipoprotein E, apolipoprotein C-III, retinal pigment epithelium, atherosclerosis, lipoprotein assembly, macular lesions
MeSH terms
Adult, Aged, Aged, 80 and over, Aging, Amino Acid Sequence, Apolipoproteins B, Apolipoproteins C, Apolipoproteins E, Cholesterol, Female, Humans, Macular Degeneration, Male, Pigment Epithelium of Eye, Reference Values, RNA, Messenger, Retinal Drusen, Fluorescent Antibody Technique, Indirect, Reverse Transcriptase Polymerase Chain Reaction, Apolipoprotein C-II

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