Delayed viremia and antibody responses in Puumala hantavirus challenged passively immunized cynomolgus macaques

Delayed viremia and antibody responses in Puumala hantavirus challenged passively immunized... No specific therapy is currently available against hemorrhagic fever with renal syndrome (HFRS) or hantavirus pulmonary syndrome. In order to study if passive immunization could inhibit hantavirus infection and/or symptoms, we inoculated two cynomolgus macaques with neutralizing monoclonal antibodies and subsequently challenged them with wild-type Puumala virus (PUUV), recently shown to induce typical signs of milder HFRS in cynomolgus macaques. Although viral load and antibody titers did not differ substantially as compared to the two control monkeys, a delayed onset of viremia and seroconversion was observed in the immunized monkeys. Interestingly, one of the immunized monkeys showed no symptoms, nor elevated of levels of IL-6, IL-10, and TNF-α, while the other developed severe symptoms and elevated levels of those cytokines, believed to be involved in PUUV-pathogenesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Delayed viremia and antibody responses in Puumala hantavirus challenged passively immunized cynomolgus macaques

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Publisher
Springer Journals
Copyright
Copyright © 2005 by Springer-Verlag/Wien
Subject
Biomedicine; Medical Microbiology; Virology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-004-0389-5
Publisher site
See Article on Publisher Site

Abstract

No specific therapy is currently available against hemorrhagic fever with renal syndrome (HFRS) or hantavirus pulmonary syndrome. In order to study if passive immunization could inhibit hantavirus infection and/or symptoms, we inoculated two cynomolgus macaques with neutralizing monoclonal antibodies and subsequently challenged them with wild-type Puumala virus (PUUV), recently shown to induce typical signs of milder HFRS in cynomolgus macaques. Although viral load and antibody titers did not differ substantially as compared to the two control monkeys, a delayed onset of viremia and seroconversion was observed in the immunized monkeys. Interestingly, one of the immunized monkeys showed no symptoms, nor elevated of levels of IL-6, IL-10, and TNF-α, while the other developed severe symptoms and elevated levels of those cytokines, believed to be involved in PUUV-pathogenesis.

Journal

Archives of VirologySpringer Journals

Published: Jan 1, 2005

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