Infection with human cytomegalovirus (HCMV) stimulates monocyte production of complement factor 3

Infection with human cytomegalovirus (HCMV) stimulates monocyte production of complement factor 3 Complement biosynthesis in monocytes is stimulated by different microorganisms including Gram negative bacteria and yeasts. We have tested the effect of human cytomegalovirus (HCMV) on complement factor 3 (C3) production by cultured human monocytes. The monocytes were challenged with either a crude or a purified HCMV preparation obtained from the supernatant of HCMV-infected fibroblasts. When the monocytes were infected with 2 pfu/cell of virus and cultured for 2 days, the increase in C3 production compared to control ranged from 3% to 162%, median 62% (p<0.01). However, crude HCMV was even more potent in stimulating C3 production, as the increase in C3 values ranged from 104% to 507%, median 247% (p=0.001). This indicates the presence in the crude HCMV preparation of a substance which acts synergistically with HCMV on the C3 production. When monocytes were stimulated by lipopolysaccharide (LPS), a well known inducer of C3, infection with crude or purified HCMV did not further increase C3 production. Both HCMV and substances produced during the propagation of HCMV in fibroblasts are able to stimulate C3 production in monocytes. Complement production by inflammatory cells may be of importance in host resistance against viral infections. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Infection with human cytomegalovirus (HCMV) stimulates monocyte production of complement factor 3

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Publisher
Springer-Verlag
Copyright
Copyright © Wien by 1997 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050050111
Publisher site
See Article on Publisher Site

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