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M9640642.TXT
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1996-03-04
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Document 0642
DOCN M9640642
TI Neutrophil-mediated suppression of virus replication after herpes
simplex virus type 1 infection of the murine cornea.
DT 9604
AU Tumpey TM; Chen SH; Oakes JE; Lausch RN; Department of Microbiology and
Immunology, College of Medicine,; University of South Alabama, Mobile
36688, USA.
SO J Virol. 1996 Feb;70(2):898-904. Unique Identifier : AIDSLINE
MED/96135200
AB Herpes simplex virus type 1 (HSV-1) infection of the murine cornea
induces the rapid infiltration of neutrophils. We investigated whether
these cells could influence virus replication. BALB/c mice treated with
monoclonal antibody (MAb) RB6-8C5 experienced a profound depletion of
neutrophils in the bloodstream, spleen, and cornea. In these animals,
virus titers in the eye were significantly higher than those in the
immunoglobulin G-treated controls at 3 days postinfection. By day 9,
virus was no longer detectable in the controls, whereas titers of 10(3)
to 10(6) PFU were still present in the neutrophil-depleted hosts.
Furthermore, virus spread more readily to the skin and brains of MAb
RB6-8C5-treated animals, rendering them significantly more susceptible
to HSV-1-induced blepharitis and encephalitis. Only 25% of the treated
animals survived, whereas all of the controls lived. Although MAb
RB6-8C5 treatment did not alter the CD4+ T-cell, B-cell, natural killer
cell, or macrophage populations, the CD8+ T-cell population was
partially reduced. Therefore, the experiments were repeated in severe
combined immunodeficiency mice, which lack CD8+ T cells. Again virus
growth was found to be significantly elevated in the eyes, trigeminal
ganglia, and brains of the MAb RB6-8C5-treated hosts. These results
strongly indicate that in both immunocompetent and immunodeficient mice,
neutrophils play a significant role in helping to control the
replication and spread of HSV-1 after corneal infection.
DE Animal Antibodies, Monoclonal/IMMUNOLOGY
Blepharitis/IMMUNOLOGY/VIROLOGY Cercopithecus aethiops CD8-Positive
T-Lymphocytes/IMMUNOLOGY Eye/VIROLOGY Female Herpesvirus 1,
Human/GROWTH & DEVELOPMENT/*IMMUNOLOGY Human Keratitis,
Herpetic/*IMMUNOLOGY/VIROLOGY Leukocyte Count Mice Mice, Inbred BALB
C Mice, SCID Neutrophils/*IMMUNOLOGY Support, U.S. Gov't, P.H.S.
Vero Cells *Virus Replication JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).