1887

Abstract

SUMMARY

Herpes simplex virus type 1 (HSV-1) has been isolated from explanted human corneas after cultivation To determine whether HSV-1 is persistent or latent in corneal cells, a system to study HSV-1 infection of rabbit corneal cells was developed. By elevation of the incubation temperature to 42 °C before and during HSV-1infection it was shown that both keratocytes and epithelial cells support a nonproductive rather than a productive infection. On subsequent temperature reduction to 37 °C, infectious virus was released from both cell types. Addition of the viral inhibitor acycloguanosine during the last 5 days of a 14 day incubation at 42 °C did not reduce the frequency of viral shedding following transfer to 37 °C, indicating that corneal cells support a latent as opposed to persistent infection. Cultures which failed to shed virus spontaneously up to 29 days post-inoculation were superinfected at 37 °C, with an site deletion mutant of HSV-1. Restriction endonuclease analysis of progeny identified both the initial infecting virus and recombinants between the parental and superinfecting genomes.

Keyword(s): corneal cells , HSV-1 and latency
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1987-03-01
2022-01-27
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