Previous Article | Next Article ![]()
J. Virol., 10 1997, 7799-7803, Vol 71, No. 10
JA Carr, J Rogerson, MJ Mulqueen, NA Roberts and RF Booth
The prophylactic and therapeutic efficacy of interleukin-12 was studied by
using murine models of herpes simplex virus infection. Prophylactic
administration consisted of two intraperitoneal doses of interleukin-12
given 48 and 24 h prior to infection. Therapeutic intraperitoneal
administration of interleukin-12 commenced 6 h after the mice were infected
with herpes simplex virus and was continued daily for a total of 5 days.
Interleukin-12 therapy improved the survival rates of mice with systemic
herpes simplex virus infection compared with those of placebo-treated
infected mice. Subcutaneous administration of interleukin-12 also improved
the rate of survival of mice after systemic herpes simplex virus infection,
although higher doses were required to give comparable effects. Combined
prophylactic and therapeutic administration of interleukin-12 produced the
greatest effect on survival after an otherwise lethal systemic infection.
Intraperitoneal administration of interleukin-12 for 2 days before and 3
days after systemic infection with herpes simplex virus resulted in
survival of 80% of the mice. These surviving mice were resistant to
subsequent reinfection with herpes simplex virus. Such resistance was
apparently specific for herpes simplex virus infection, since a second
group of survivors succumbed to a lethal infection with murine
cytomegalovirus. Infectious virus was recovered from lumbar ganglia
explants dissected from survivors of prophylactic interleukin-12 therapy
and cultured for 5 days in vitro, suggesting that interleukin- 12 treatment
did not prevent the establishment of latent herpes simplex virus infection.
One action of interleukin-12 may be to enhance natural killer cell-mediated
clearance of the virus. However, interleukin-12 therapy was also effective
in mice carrying the beige mutation, which reduces natural killer cell
lytic activity, suggesting that interleukin- 12 has additional activities
in vivo.
Copyright © 1997, American Society for Microbiology
Interleukin-12 exhibits potent antiviral activity in experimental herpesvirus infections
Virology Department, Roche Development Welwyn, Welwyn Garden City, Hertfordshire, United Kingdom.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»