December 1995
Volume 36, Issue 13
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Articles  |   December 1995
Studies of adenovirus-induced eye disease in the rabbit model.
Author Affiliations
  • M D Trousdale
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
  • R Nóbrega
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
  • R L Wood
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
  • D Stevenson
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
  • P M dos Santos
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
  • D Klein
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
  • P J McDonnell
    Doheny Eye Institute, Los Angeles, CA 90033, USA.
Investigative Ophthalmology & Visual Science December 1995, Vol.36, 2740-2748. doi:
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      M D Trousdale, R Nóbrega, R L Wood, D Stevenson, P M dos Santos, D Klein, P J McDonnell; Studies of adenovirus-induced eye disease in the rabbit model.. Invest. Ophthalmol. Vis. Sci. 1995;36(13):2740-2748.

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Abstract

PURPOSE: To achieve a better understanding of the pathogenic processes associated with human adenovirus (Ad)-induced ocular disease. METHODS: Growth curves of Ad5 and Ad14 were performed in cell cultures derived from rabbit and human corneal epithelium (CE) and corneal keratocytes (CK). For in vivo studies, rabbit eyes were inoculated intrastromally and topically with 10(6) plaque-forming units per eye of Ad5 and ultraviolet light-inactivated (UV-1) Ad5 or Ad14, and the clinical features of the eyes were evaluated by biomicroscopic slit lamp examinations. Duration and quantitation of virus in tear samples were monitored. Humoral response was evaluated by enzyme-linked immunosorbent assay and serum neutralization titrations. Histopathologic and immunocytochemical staining of frozen corneal tissues was performed to determine the expression of major histocompatibility complex (MHC) class I and II and the presence of CD4+ and CD8+ T lymphocytes and CD18+ cells after the immunopathologic response elicited by virus inoculation. RESULTS: Both Ad5 and Ad14 replicated in all human cell cultures studied. In cells of rabbit origin, Ad5 replicated in cultured CE and CK cells, whereas Ad14 replication appeared restricted. Virus titers in ocular samples from Ad5-inoculated eyes peaked on postinoculation days 3 through 4, with approximately a 100-fold increase in infectious virus in comparison to initial titers. The duration of Ad5 shedding was 8.9 +/- 2.4 days. Ad5, Ad5 UV-I, and Ad14 induced seroconversion and subepithelial opacities. CD4+ and CD8+ T lymphocytes and CD18+ cells were present in these intrastromal immune cell infiltrates. Expression of MHC class I and II was observed in keratocytes and immune cells; MHC class I also was expressed on CE cells in inflamed areas. CONCLUSIONS: Ad5 is capable of replicating in both CE and CK cells of the rabbit eye. The presence of Ad antigens within the corneal stroma originating from infectious virus (Ad5), UV-inactivated virus (Ad5), or nonreplicating infectious virus (Ad14) can elicit indistinguishable immunopathologic responses in the stroma composed of CD4+, CD8+, and CD18+ cells.

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