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Journal of Clinical Microbiology, November 1999, p. 3518-3523, Vol. 37, No. 11
Institute of Virology,
Received 27 April 1999/Returned for modification 4 June
1999/Accepted 23 July 1999
Herpes simplex virus type 1 (HSV-1)-related disease ranges from a
localized, self-limiting illness to fatal disease in immunocompromised individuals. The corneal disease herpetic keratitis may develop after
reactivation of a latent virus or reinfection with an exogenous herpesvirus. Molecular analysis of the virus involved may allow distinction between these two options. The HSV-1 genome contains several hypervariable regions that vary in numbers of reiterating regions (reiterations I to VIII [ReI to ReVIII]) between individual strains. Twenty-four HSV-1 clones, derived by subcloning of HSV-1 (strain F) twice in limiting dilutions, were tested in a PCR-based assay to analyze the stabilities of ReI, ReIII, ReIV, and ReVII. ReI
and ReIII proved to vary in size upon subcloning, whereas ReIV and
ReVII were stable. Subsequently, 37 unrelated isolates and 10 sequential isolates from five patients, all with HSV-1-induced keratitis, were genotyped for ReIV and ReVII. Of the 37 unrelated samples, 34 (92%) could be discriminated, while the genotypes of the
viruses in sequential samples were identical for each individual. Conclusively, the data show that the approach presented allows the
rapid and accurate discrimination of HSV-1 strains in studies that
address the transmission and pathogenesis of HSV-1 infections.
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Amplification of Reiterated Sequences of Herpes
Simplex Virus Type 1 (HSV-1) Genome To Discriminate between
Clinical HSV-1 Isolates
*
Corresponding author. Mailing address: Department of
Virology, Erasmus University Rotterdam, P.O. Box 1738, 3000 DR
Rotterdam, The Netherlands. Phone: (31) 10-4088066. Fax: (31)
10-4089485. E-mail: verjans{at}viro.fgg.eur.nl.
Journal of Clinical Microbiology, November 1999, p. 3518-3523, Vol. 37, No. 11
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
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