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Journal of Virology, October 1999, p. 7965-7971, Vol. 73, No. 10
Unité des Virus Lents, CNRS URA 1930, Institut Pasteur, 75724 Paris Cedex 15, France
Received 22 April 1999/Accepted 30 June 1999
Theiler's virus causes a persistent infection and a demyelinating
disease of mice which is a model for multiple sclerosis. Susceptibility to viral persistence maps to several loci, including the
interferon gamma locus. Inactivating the gene coding for the interferon
gamma receptor makes 129/Sv mice susceptible to persistent infection
and clinical disease, whereas inactivating the interferon gamma gene
makes C57BL/6 mice susceptible to persistent infection but not to
clinical disease. This difference in phenotype is due to the difference
in genetic background. Clinical disease depends on high viral load and
Tmevd5, a locus on chromosome 11. These results have
consequences for the identification of viruses which might be
implicated in multiple sclerosis.
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Viral Load and a Locus on Chromosome 11 Affect the
Late Clinical Disease Caused by Theiler's Virus
*
Corresponding author. Mailing address: Unité des
Virus Lents, CNRS URA 1930, Institut Pasteur, 28, rue du Dr. Roux,
75724 Paris Cedex 15, France. Phone: 33 (0)1 45 68 87 70. Fax: 33 (0)1 40 61 31 67. E-mail: mbrahic{at}pasteur.fr.
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