Factors affecting the permissiveness of porcine alveolar macrophages for porcine reproductive and respiratory syndrome virus

Factors affecting the permissiveness of porcine alveolar macrophages for porcine reproductive and... Alveolar macrophages from PRRSV-infected and naïve pigs were placed into culture and infected with PRRSV laboratory strain SD-23983. Permissiveness increased with time in culture, and macrophages from infected pigs could be superinfected. Addition of actinomycin D, an inhibitor of mRNA synthesis, blocked infection. Interferon-γ reduced infection in cultures, while the addition of tumor necrosis factor-α or interleukin (IL)-10 did not affect permissiveness. IL-4 produced a marginal increase in the percentage of infected cells, but without a detectable increase in virus yield. These results suggest that the PRRSV-permissive population of cells in culture arises from a non-permissive precursor population and depends on new mRNA synthesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Factors affecting the permissiveness of porcine alveolar macrophages for porcine reproductive and respiratory syndrome virus

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Publisher
Springer Vienna
Copyright
Copyright © 2009 by Springer-Verlag
Subject
Biomedicine; Infectious Diseases; Medical Microbiology ; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-008-0271-y
Publisher site
See Article on Publisher Site

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