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The dichotomy between herpes simplex virus type 1-induced ocular pathology and systemic immunity
Investigative Ophthalmology & Visual Science
|September 1, 1987
Summary
Different Herpes simplex virus Type 1 (HSV-1) inoculation routes in mice caused varied ocular pathology. Intravitreal (VC) and translimbal (TxL) routes showed distinct effects on the injected and contralateral eyes, with systemic immunity remaining similar.
Area of Science:
- Ophthalmology
- Virology
- Immunology
Background:
- Herpes simplex virus Type 1 (HSV-1) can cause ocular infections.
- Understanding the impact of different inoculation routes is crucial for studying viral pathogenesis and immune responses.
Purpose of the Study:
- To compare ocular pathology and systemic immunity following intravitreal (VC) versus translimbal (TxL) inoculation of HSV-1 in mice.
- To investigate the correlation between ocular disease severity and systemic immune modulation.
Main Methods:
- HSV-1 was inoculated into the mouse eye via intravitreal (VC) or translimbal (TxL) routes.
- Ocular pathology, including viral infection and inflammation, was monitored over four weeks.
- Systemic immunity, including T cell-mediated delayed-type hypersensitivity (DTH) responses and anti-HSV neutralizing antibody levels, was assessed.
Main Results:
- VC inoculation led to infection in the injected eye, with minimal involvement of the contralateral eye.
- TxL inoculation resulted in widespread infection and inflammation in the injected eye, and subsequent chorioretinitis in the contralateral eye.
- Both VC and TxL routes suppressed T cell-mediated DTH responses and enhanced anti-HSV antibody levels, similar to anterior chamber (AC) inoculation.
Conclusions:
- The route of HSV-1 inoculation significantly influences the pattern and severity of ocular pathology.
- Ocular disease progression in HSV-1 infections does not directly correlate with the induced systemic immune response.
- Translimbal inoculation is a more aggressive route, leading to bilateral ocular disease and distinct pathological outcomes compared to intravitreal inoculation.