PMID- 13680216 OWN - NLM STAT- MEDLINE DCOM- 20040727 LR - 20181130 IS - 0300-8584 (Print) IS - 0300-8584 (Linking) VI - 193 IP - 2-3 DP - 2004 May TI - Interferons in enteroviral heart disease: modulation of cytokine expression and antiviral activity. PG - 149-54 AB - Interferon (IFN)-beta has a more than 120-fold higher antiviral activity than the closely related IFN-alpha in human myocardial fibroblasts infected with the cardiotropic enterovirus coxsackievirus B3 (CVB3). CVB3 replication induces interleukin (IL)-6 and IL-8 expression in myocardial fibroblasts, and suppresses the expression of monocyte chemoattractant protein-1 (MCP-1). We investigated whether the higher antiviral activity of IFN-beta compared to IFN-alpha was a result of a suppression of IL-8 expression by IFN-beta since previous studies had indicated that IL-8 stimulates enterovirus replication. Human myocardial fibroblasts were treated with either IFN-alpha, IFN-beta or IFN-gamma (0, 10, 100, or 1,000 IU/ml) and the concentrations of IL-6, IL-8 and MCP-1 were measured in culture supernatants by immunoassays. Both IFN-beta and IFN-gamma reduced IL-6 and IL-8 expression significantly. In addition, neutralization of IL-8 in culture supernatants of myocardial fibroblasts using a monoclonal antibody demonstrated a significant reduction of CVB3 titers. Antiproliferative effects of all three IFNs were very low (<30% with 1,000 IU/ml), indicating that the suppression IL-6 and IL-8 was not related to cytotoxicity. MCP-1 expression was increased only by high concentrations of IFN-gamma (1,000 IU/ml). By contrast, IFN-alpha had no significant effect on IL-6, IL-8 and MCP-1 expression. In conclusion, suppression of IL-8 expression is an "immuno-modulating" feature of IFN-beta in human myocardial fibroblasts, which is similar to the activity of IFN-gamma. This feature of IFN-beta contributes to its high antiviral activity against CVB3 and may be useful in the treatment of enteroviral heart disease. FAU - Heim, Albert AU - Heim A AD - Institut fur Virologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625 Hannover, Germany. ahei@virologie.mh-hannover.de FAU - Weiss, Sabine AU - Weiss S LA - eng PT - Journal Article DEP - 20030912 PL - Germany TA - Med Microbiol Immunol JT - Medical microbiology and immunology JID - 0314524 RN - 0 (Antiviral Agents) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (Interferon Type I) RN - 0 (Interferon alpha-2) RN - 0 (Interferon-alpha) RN - 0 (Interleukin-6) RN - 0 (Interleukin-8) RN - 0 (Recombinant Proteins) RN - 82115-62-6 (Interferon-gamma) RN - 9008-11-1 (Interferons) SB - IM MH - Antiviral Agents/*pharmacology MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Cytokines/drug effects/*metabolism MH - Enterovirus B, Human/drug effects/*pathogenicity MH - Fibroblasts/*virology MH - Humans MH - Interferon Type I/pharmacology MH - Interferon alpha-2 MH - Interferon-alpha/pharmacology MH - Interferon-gamma/pharmacology MH - Interferons/genetics/*pharmacology MH - Interleukin-6/metabolism MH - Interleukin-8/metabolism MH - Myocardium/*cytology MH - Recombinant Proteins EDAT- 2003/09/19 05:00 MHDA- 2004/07/28 05:00 CRDT- 2003/09/19 05:00 PHST- 2003/03/27 00:00 [received] PHST- 2003/09/19 05:00 [pubmed] PHST- 2004/07/28 05:00 [medline] PHST- 2003/09/19 05:00 [entrez] AID - 10.1007/s00430-003-0200-3 [doi] PST - ppublish SO - Med Microbiol Immunol. 2004 May;193(2-3):149-54. doi: 10.1007/s00430-003-0200-3. Epub 2003 Sep 12.