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Experimental Autoimmune Uveitis: An Intraocular Inflammatory Mouse Model
Published on: January 12, 2022
Retinal Mueller glial cells trigger the hallmark inflammatory process in autoimmune uveitis
Stefanie M Hauck1, Stephanie Schoeffmann, Barbara Amann
1Institute of Human Genetics, GSF-National Research Center for Environment and Health, Ingolstaedter Landstr. 1, D-85764 Neuherberg, Germany. hauck@gsf.de
Journal of Proteome Research
|April 21, 2007
Summary
Spontaneous equine recurrent uveitis (ERU) involves retinal degeneration. Retinal Mueller glial cells (RMG) activate, expressing inflammatory markers, potentially driving disease progression and blindness in horses.
Area of Science:
- Ophthalmology
- Immunology
- Veterinary Medicine
Background:
- Spontaneous equine recurrent uveitis (ERU) is an incurable autoimmune eye disease in horses.
- T-helper 1 cells are implicated in ERU relapses, but the molecular mechanisms of retinal degeneration are unclear.
Purpose of the Study:
- To investigate molecular changes in the equine retina during ERU.
- To identify the role of retinal Mueller glial cells (RMG) in ERU pathogenesis.
Main Methods:
- Proteomic analysis of retinas from ERU-diseased and healthy horses.
- Screening for RMG-specific markers and inflammatory cytokines.
Main Results:
- Significant proteomic changes observed in ERU retinas, including markers of blood-retinal barrier breakdown.
- Uveitic retinas showed upregulation of GFAP, vimentin, and aldose 1-epimerase, indicating RMG activation.
- Activated RMG downregulated PEDF and upregulated interferon-gamma, a pro-inflammatory cytokine.
Conclusions:
- Retinal Mueller glial cells (RMG) become activated during equine uveitis.
- Activated RMG may drive ERU progression by secreting interferon-gamma, contributing to inflammation and blindness.
