Br J Ophthalmol 2000;84:408-412
( April )
Both CD4+ and CD8+ T cells are involved in protection
against HSV-1 induced corneal scarring
Homayon Ghiasia b, Steve Caia, Guey-Chuen Pernga, Anthony B Nesburna b, Steven L Wechslera b
a Ophthalmology
Research, Cedars-Sinai Burns and Allen Research Institute, Los Angeles,
USA, b Department of
Ophthalmology, UCLA School of Medicine, Los Angeles, USA
Correspondence to: Homayon Ghiasi, Ophthalmology Research, Davis Building Room 5069, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA 90048, USA
Accepted for publication 15 November 1999
AIM To determine the
relative impact of CD4+ T cells and CD8+ T cells in protecting mice
against ocular HSV-1 challenge.
METHODS CD4+ T cell
knockout mice (CD4 / mice), CD8+ T cell knockout mice (CD8 /
mice), and mice depleted for CD4+ or CD8+ T cells by antibody (CD4+
depleted and CD8+ depleted mice), were examined for their ability to
withstand HSV-1 ocular challenge. The parental mice for both knockout
mice were C57BL/6J.
RESULTS These results
suggest that: (1) both CD4+ deficient mice (CD4 / and CD4+
depleted mice) and CD8+ deficient mice (CD8 / , and CD8+ depleted
mice) developed significantly more corneal scarring than their C57BL/6J
parental strain; (2) the duration of virus clearance from the eyes of
the CD4+ deficient mice was 4 days longer than that of the CD8+
deficient mice; and (3) the severity of corneal scarring in the CD4+
deficient mice was approximately twice that of the CD8+ deficient mice.
CONCLUSIONS It was
reported here that: (1) CD4+ and CD8+ T cells were both involved in
protection against lethal ocular HSV-1 infection; and (2) CD4+ and CD8+
T cells were both involved in protection against HSV-1 induced corneal scarring.
© 2000 by British Journal of Ophthalmology
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