ArticleInternational journal of molecular sciences2022
Photodegradation of Lipofuscin in Suspension and in ARPE-19 Cells and the Similarity of Fluorescence of the Photodegradation Product with Oxidized Docosahexaenoate.
Article in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 13 citations in OpenAlex.
- Targeting of Nuclear Factor Erythroid 2-Related Factor 2 (NRF2) Signaling Pathway in Age-Related Eye Diseases: Molecular Mechanisms and Opportunities for therapy.Journal of biochemical and molecular toxicology · 2026Review
- Multi-modal label-free imaging of cellular metabolism and oxidative stress in 3D brain tissue models.Communications biology · 2025Article
- Characterization of the ocular inflammatory response to AAV reveals divergence by sex and age.Molecular therapy : the journal of the American Society of Gene Therapy · 2025Article
- (Photo)toxicity of Partially Oxidized Docosahexaenoate and Its Effect on the Formation of Lipofuscin in Cultured Human Retinal Pigment Epithelial Cells.Antioxidants (Basel, Switzerland) · 2024Article
- Protective Effects of Purple Corn (Preventive nutrition and food science · 2024Article
- Retinal Pigment Epithelium Pigment Granules: Norms, Age Relations and Pathology.International journal of molecular sciences · 2024Review
- Lipofuscin, Its Origin, Properties, and Contribution to Retinal Fluorescence as a Potential Biomarker of Oxidative Damage to the Retina.Antioxidants (Basel, Switzerland) · 2023Review
- Lipofuscin-Mediated Photic Stress Induces a Dark Toxic Effect on ARPE-19 Cells.International journal of molecular sciences · 2022Article
- Photobiology of lipofuscin granules in the retinal pigment epithelium cells of the eye: norm, pathology, age.Biophysical reviews · 2022Review
- Retinal Pigment Epithelium in Human Donor Eyes Contains Higher Levels of Bisretinoids Including A2E in Periphery than Macula.Investigative ophthalmology & visual science · 2022Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 2 countries.
Funding
Abstract
Retinal lipofuscin accumulates with age in the retinal pigment epithelium (RPE), where its fluorescence properties are used to assess retinal health. It was observed that there is a decrease in lipofuscin fluorescence above the age of 75 years and in the early stages of age-related macular degeneration (AMD). The purpose of this study was to investigate the response of lipofuscin isolated from human RPE and lipofuscin-laden cells to visible light, and to determine whether an abundant component of lipofuscin, docosahexaenoate (DHA), can contribute to lipofuscin fluorescence upon oxidation. Exposure of lipofuscin to visible light leads to a decrease in its long-wavelength fluorescence at about 610 nm, with a concomitant increase in the short-wavelength fluorescence. The emission spectrum of photodegraded lipofuscin exhibits similarity with that of oxidized DHA. Exposure of lipofuscin-laden cells to light leads to a loss of lipofuscin granules from cells, while retaining cell viability. The spectral changes in fluorescence in lipofuscin-laden cells resemble those seen during photodegradation of isolated lipofuscin. Our results demonstrate that fluorescence emission spectra, together with quantitation of the intensity of long-wavelength fluorescence, can serve as a marker useful for lipofuscin quantification and for monitoring its oxidation, and hence useful for screening the retina for increased oxidative damage and early AMD-related changes.
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