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Galectin-1 studies in proliferative diabetic retinopathy
Ahmed M Abu El-Asrar1,2, Ajmal Ahmad1, Eef Allegaert3
1Department of Ophthalmology, King Saud University, Riyadh, Saudi Arabia.
Acta Ophthalmologica
|July 19, 2019
Summary
Galectin-1 is elevated in proliferative diabetic retinopathy (PDR) and promotes angiogenesis and leukocyte adhesion, suggesting its role in PDR pathogenesis. Inhibition of galectin-1 shows therapeutic potential for PDR.
Area of Science:
- Ophthalmology
- Endocrinology
- Immunology
Background:
- Galectin-1 regulates endothelial cell function and angiogenesis.
- Proliferative diabetic retinopathy (PDR) is a sight-threatening complication of diabetes characterized by neovascularization.
Purpose of the Study:
- To investigate the role of galectin-1 in the pathogenesis of PDR.
- To determine if galectin-1 levels correlate with disease severity in PDR patients.
Main Methods:
- Analysis of vitreous samples and epiretinal membranes from PDR patients and controls.
- Immunohistochemistry, ELISA, and Western blot analysis to quantify galectin-1 and VEGF levels.
- In vitro assays to assess galectin-1's effects on endothelial cells and Müller glial cells.
Main Results:
- Elevated galectin-1 and VEGF levels in PDR vitreous, with a positive correlation between them.
- Galectin-1 expression in vascular endothelial cells, myofibroblasts, and leukocytes within epiretinal membranes.
- Galectin-1 upregulates VEGF in Müller cells and increases leukocyte adhesion to endothelial cells; inhibition shows therapeutic promise.
Conclusions:
- Galectin-1 plays a significant role in the pathogenesis of PDR.
- Targeting galectin-1 may offer a novel therapeutic strategy for PDR.
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