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Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Med+Microbiol+Immunol 2011 ; 200 (1): 53-60 Nephropedia Template TP
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Comparison of pro-inflammatory cytokine expression and cellular signal transduction in human macrophages infected with different influenza A viruses #MMPMID20865277
Geiler J; Michaelis M; Sithisarn P; Cinatl J Jr
Med Microbiol Immunol 2011[Feb]; 200 (1): 53-60 PMID20865277show ga
Influenza A virus infection of macrophages and virus-induced pro-inflammatory gene expression are regarded to contribute to severity of influenza A virus-caused diseases. Although some data are available on cytokine production by influenza A virus-infected macrophages, systematic comparisons of the virus types are currently considered to be of high relevance in humans (pandemic H1N1/2009, seasonal H1N1, seasonal H3N2, highly pathogenic avian influenza H5N1) on pro-inflammatory potential, and relevant underlying cellular signalling events are missing. Here, we show that the infection of human monocyte-derived macrophages with pandemic H1N1/2009 (A/HH/01/2009), seasonal H1N1/1999 (A/New Caledonia/20/99), seasonal H3N2/2004 (A/California/7/2004) or highly pathogenic H5N1/2004 (A/Thailand/1(Kan-1)/04) results in similar infection rates. However, the investigated H1N1 strains caused delayed and decreased apoptosis in comparison with H3N2/2004 or H5N1/2004. Moreover, human macrophage infection with H3N2/2004 or H5N1/2004 but not with H1N1 viruses was associated with pronounced pro-inflammatory cytokine production and activation of relevant mitogen-activated protein kinase pathways as indicated by phosphorylation of p38, JNK and ERK 1/2. These findings are in line with clinical observations indicating enhanced disease severity in H3N2- or H5N1-infected patients compared to individuals infected with pandemic H1N1/2009 or seasonal H1N1.
|*Signal Transduction[MESH]
|Apoptosis[MESH]
|Cell Line[MESH]
|Cytokines/*biosynthesis[MESH]
|Gene Expression Profiling[MESH]
|Humans[MESH]
|Influenza A Virus, H1N1 Subtype/*immunology[MESH]
|Influenza A Virus, H3N2 Subtype/*immunology[MESH]
|Influenza A Virus, H5N1 Subtype/*immunology[MESH]