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Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
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N-Glycosylation Patterns across the Age-Related Macular Degeneration Spectrum
Ivona Bućan1, Jelena Škunca Herman2, Iris Jerončić Tomić3
1Clinical Hospital Centre Split, 21000 Split, Croatia.
Molecules (Basel, Switzerland)
|March 26, 2022
Summary
Changes in N-glycans, sugar structures on proteins, may serve as biomarkers for age-related macular degeneration (AMD). Analyzing N-glycans across disease stages offers insights into AMD
Area of Science:
- Ophthalmology
- Immunology
- Glycobiology
Background:
- Age-related macular degeneration (AMD) pathogenesis is not fully understood.
- Plasma and IgG N-glycosylation patterns may offer insights into disease mechanisms.
Purpose of the Study:
- To investigate changes in plasma and IgG N-glycosylation across different stages of AMD severity.
- To explore N-glycans as potential biomarkers for AMD detection and progression.
Main Methods:
- Analysis of 2835 subjects from the 10.001 Dalmatians project.
- Classification of subjects into four groups: bilateral AMD, unilateral AMD, early-onset drusen, and controls.
- High-performance liquid chromatography (HPLC) analysis of plasma and IgG N-glycans, correlated with retinal fundus images.
Main Results:
- Identified 106 cases of AMD (3.7%), with 66 being bilateral.
- Observed a significant decrease in bi-antennary glycans in unilateral AMD (aOR 0.43).
- Detected a substantial increase in pro-inflammatory tetra-antennary glycans in bilateral AMD (OR 7.90).
Conclusions:
- N-glycans show potential as biomarkers for age-related macular degeneration.
- Disease severity staging is crucial for understanding complex diseases like AMD.
- Refined study designs analyzing disease stages are necessary for elucidating AMD pathogenesis.
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