Journal or Book Title
Journal of Virology
The early pathogenic effects of bovine immunodeficiency-like virus (BIV) were studied in calves experimentally inoculated with BIV. All animals inoculated with BIV R29-infected cells seroconverted by 6 weeks postinoculation, and BIV was recoverable from each animal at 2 weeks postinoculation. However, levels of BIV replication in vivo appeared to be low. In situ hybridization studies indicated that during peak periods of viral replication in vivo, less than 0.03% of peripheral blood mononuclear cells were expressing detectable levels of viral RNA. Moreover, the levels of viral RNA in these cells in vivo were less than 1/10 the levels observed in persistently infected cells in vitro. BIV-inoculated calves had significantly higher numbers of circulating lymphocytes, and follicular hyperplasia was observed in lymph nodes, hemal nodes, and spleen. The histopathological changes observed in BIV-infected calves were similar to changes found early after infection with the immunosuppressive lentiviruses, including human immunodeficiency virus type 1.
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Carpenter, Susan Long; Miller, Lyle D.; Alexandersen, Soren; Whetstone, Cecelia Anne; VanDerMaaten, Martin J.; Viuff, Birgitte; Wannemuehler, Yvonne; Miller, Janice M.; and Roth, James A., "Characterization of Early Pathogenic Effects after Experimental Infection of Calves with Bovine Immunodeficiency-Like Virus" (1992). Veterinary Microbiology and Preventive Medicine Publications. 54.