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Lipopolysaccharide suppresses cytokine release from coxsackie virus-infected human monocytes.
- Source :
-
Research in immunology [Res Immunol] 1992 Jan; Vol. 143 (1), pp. 65-70. - Publication Year :
- 1992
-
Abstract
- Infections by coxsackie virus B3 (CVB3) have been reported to be associated with an enhanced influx of mononuclear leukocytes into afflicted tissue. Current evidence indicates that monocytes/macrophages are specifically involved in CVB3-induced myocarditis by maintaining a chronic inflammatory response. To examine susceptibility and reactivity to CVB3, freshly isolated human monocytes were exposed to various virus doses (0.1-10 MOI) in the presence or absence of macrophage-activating lipopolysaccharide (LPS). CVB3 infection alone induced an activation of monocytes as evidenced by enhanced adherence, release of cytokines and secretion of prostaglandin E2 (PGE2). Simultaneous addition of LPS almost entirely suppressed LPS-specific production of tumour necrosis factor alpha (TNF alpha) and PGE2, partially inhibited release of interleukin 1 beta (IL 1 beta) and did not affect interleukin 6 (IL6) synthesis of CVB3-infected monocytes. These data show that CVB3 activates monocytes to cytokine production but renders them unreactive to further activating stimuli. Further studies should determine the extent to which continuous cytokine release from persistently CVB3-infected monocytes, and their apparent unresponsiveness to other stimuli, contribute to chronic myocarditis.
- Subjects :
- Coxsackievirus Infections immunology
Dinoprostone metabolism
Humans
In Vitro Techniques
Interleukin-1 metabolism
Interleukin-6 metabolism
Monocytes immunology
Monocytes metabolism
Tumor Necrosis Factor-alpha metabolism
Cytokines metabolism
Enterovirus B, Human immunology
Lipopolysaccharides immunology
Subjects
Details
- Language :
- English
- ISSN :
- 0923-2494
- Volume :
- 143
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Research in immunology
- Publication Type :
- Academic Journal
- Accession number :
- 1314406
- Full Text :
- https://doi.org/10.1016/0923-2494(92)80081-u