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Interactions of porcine alveolar macrophages and bone marrow cells with African swine fever virus and virus-infected cells



Interactions of porcine alveolar macrophages and bone marrow cells with African swine fever virus and virus-infected cells



Veterinary Microbiology 8(2): 163-177



Virus yields from porcine alveolar macrophages (AM) infected with African swine fever virus (ASFV) were greater and were achieved more rapidly, when inoculated at a high multiplicity of infection (MOI) than at low MOI. The difference was related to a lower percentage of cells becoming infected after low MOI inoculation. The reduced yields after low MOI were not caused by prolongation of the culture time, by bacterial endotoxins or by production of inhibitory substances by infected AM. Virus-infected AM were not susceptible to lysis in antibody-dependent cell mediated cytotoxicity (ADCC) assays and this was apparently due to a paucity of viral antigen expressed on the cell surface. Uninfected AM did not act as effectors in ADCC. Porcine bone marrow (PBM) cells were effective in mediation of ADCC and their activity was reduced after ASFV infection. Cells separated into adherent and non-adherent populations, depleted by carbonyl iron treatment or separated by Ficoll-Hypaque centrifugation, all showed effector activity in ADCC. The effector cells were not mature neutrophils or lymphocytes and were probably granulocytic precursors.

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Accession: 043434113

Download citation: RISBibTeXText

PMID: 6868333

DOI: 10.1016/0378-1135(83)90063-9


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