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Uveitis induced in primates by interphotoreceptor retinoid-binding protein
Archives of Ophthalmology (Chicago, Ill. : 1960)
|November 1, 1986
Summary
Interphotoreceptor retinoid-binding protein (IRBP) is highly uveitogenic in primates, causing ocular inflammation and uveitis-like symptoms. This suggests retinal antigens can trigger choroidal immune responses, mimicking human conditions.
Area of Science:
- Ophthalmology
- Immunology
- Retinal Science
Background:
- Interphotoreceptor retinoid-binding protein (IRBP) is a key component of the retina.
- The potential of IRBP to induce ocular inflammation was previously unknown.
Purpose of the Study:
- To investigate the uveitogenic potential of interphotoreceptor retinoid-binding protein (IRBP) in primates.
- To characterize the clinical and histological manifestations of IRBP-induced ocular inflammation.
Main Methods:
- Immunization of six monkeys with bovine interphotoreceptor retinoid-binding protein (IRBP).
- Clinical examination for ocular inflammation.
- Histopathological analysis of retinal and choroidal tissues.
Main Results:
- All immunized monkeys developed ocular inflammation, characterized by retinal vessel sheathing and yellow-white lesions.
- Histology revealed outer segment shortening, retinal inflammation, and significant choroidal changes, including granulomas.
- Observed granulomas resembled Dalen-Fuchs nodules, similar to those in human uveitic conditions like sympathetic ophthalmia.
Conclusions:
- Interphotoreceptor retinoid-binding protein (IRBP) is highly uveitogenic in primates.
- Retinal-specific antigens can initiate immunopathogenic processes primarily affecting the choroid.
- The findings provide a model for understanding human uveitic conditions such as sympathetic ophthalmia and Vogt-Koyanagi-Harada syndrome.