Infection of peritoneal macrophages in vitro and in vivo with feline immunodeficiency virus.

Journal of Virology
D Brunner, N Pedersen

Abstract

Macrophages were harvested from the peritoneal cavities of healthy specific-pathogen-free cats by saline lavage. Three days before collection, the peritoneal cavities were stimulated with glutaraldehyde-fixed Saccharomyces cerevisiae cells to induce greater numbers of macrophages and to begin the activation sequence. Peritoneal macrophages from cats stimulated once with yeast consisted mainly of small macrophages and a smaller number of larger activated macrophages. After several days in culture, many of the small macrophages became activated and a portion of the activated macrophages developed into multinucleated giant cells. Peritoneal cells from cats that were stimulated twice or three times with yeast at 3-week intervals consisted of a higher proportion of activated macrophages initially and produced more and larger multinuclear giant cells with time. Cultures of peritoneal cells stimulated once with yeast were easily infected in vitro with feline immunodeficiency virus (FIV) and produced a transient burst of reverse transcriptase activity. After the initial burst of virus replication, the infection became latent. Even more multinucleated giant cells appeared after infection, and many of these cells fused with each other. R...Continue Reading

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Jan 11, 2003·Clinical and Diagnostic Laboratory Immunology·Mariko KohmotoTakayuki Miyazawa
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