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- W2284090732 abstract "Considering the important role of cytokines in the initiation and evolution of the inflammatory process induced by Shigella and EIEC strains, the purpose of this study was the characterization of the secretory patterns of HeLa cells induced by Shigella ssp. and EIEC strains and to link the obtained results with the invasiveness level of bacterial strains on this cellular line. During this study there were analyzed two EIEC strains and 12 strains of the following Shigella species: 2 Sh. flexneri 2a, 2 Sh. flexneri 3a, 2 Sh. flexneri 4a, 2 Sh. boydii, 2 Sh. sonnei strains isolated in Romania during 2005 from children with dysentery and diarrhoea and confirmed for their invasive ability by Sereny test. The level of the main pro and anti-inflammatory cytokines, IL-1 beta, IL-6, IL-10, IL-13, IL-17 and TNF-alpha induced by whole bacterial cultures as well as by their soluble mediators was determined by an ELISA test. Our results showed that HeLa cells can be used not only for the qualitative and quantitative assessment of Shigella and EIEC strains invasion ability, but also as a simple work procedure for the investigation of an in vitro complex crosstalk communication mechanisms that involves physical interactions between bacterial cells and epithelial cells (adhesins and complementary receptors) and pro- and anti-inflammatory molecules regulation.The majority of the analyzed Shigella serogroups, with the exception of Shigella sonnei and EIEC strains, inhibited the inflammatory response by reducing the expression of majority of pro-inflammatory cytokines, i.e., IL-1 beta, IL-6, TNF-alpha and IL-17. The reduced cost of the in vitro procedure, the possibility of results interpretation and the strict regulations concerning the use of animals for experimental purposes are the main reasons that support the implementation of such an in vitro test in the research labs." @default.
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- W2284090732 date "2011-03-26" @default.
- W2284090732 modified "2023-10-18" @default.
- W2284090732 title "The modulation of hela cells secretory patterns by invasive Shigella spp. and enteroinvasive E. coli bacterial cells and their soluble components." @default.
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