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Journal of Virology, November 1998, p. 9224-9232, Vol. 72, No. 11
Department of Infectious Diseases and
Physiology, College of Veterinary Medicine, Oklahoma State
University, Stillwater, Oklahoma 74078-2006
Received 8 May 1998/Accepted 10 August 1998
Although monkey B virus (herpesvirus simiae; BV) is common in all
macaque species, fatal human infections appear to be associated with
exposure to rhesus macaques (Macaca mulatta), suggesting that BV isolates from rhesus monkeys may be more lethal to nonmacaques than are BV strains indigenous to other macaque species. To determine if significant differences that would support this supposition exist
among BV isolates, we compared multiple BV strains isolated from
rhesus, cynomolgus, pigtail, and Japanese macaques. Antigenic analyses
indicated that while the isolates were very closely related to one
another, there are some antigenic determinants that are specific to BV
isolates from different macaque species. Restriction enzyme digest
patterns of viral DNA revealed marked similarities between rhesus and
Japanese macaque isolates, while pigtail and cynomolgus macaque
isolates had distinctive cleavage patterns. To further compare genetic
diversity among BV isolates, DNA sequences from two regions of the
viral genome containing genes that are conserved (UL27 and US6) and
variable (US4 and US5) among primate alphaherpesviruses, as well as
from two noncoding intergenic regions, were determined. From these
sequence data and a phylogenetic analysis of them it was evident that
while all isolates were closely related strains of BV, there were three
distinct genotypes. The three BV genotypes were directly related to the
macaque species of origin and were composed of (i) isolates from rhesus
and Japanese macaques, (ii) cynomolgus monkey isolates, and (iii)
isolates from pigtail macaques. This study demonstrates the existence
of different BV genotypes which are related to the macaque host species
and thus provides a molecular basis for the possible existence of BV
isolates which vary in their levels of pathogenicity for nonmacaque
species.
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Molecular Evidence for Distinct Genotypes of Monkey
B Virus (Herpesvirus Simiae) Which Are Related to the Macaque
Host Species
*
Corresponding author. Mailing address: Department of
Infectious Diseases and Physiology, College of Veterinary Medicine,
Oklahoma State University, Stillwater, OK 74078-2006. Phone: (405)
744-8169. Fax: (405) 744-8263. E-mail: reberle{at}okstate.edu.
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