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- W2005194920 abstract "Pseudomonas aeruginosa is an important opportunistic bacterial pathogen, causing infections of the respiratory and other organ systems in susceptible hosts. P. aeruginosa infection is initiated by adhesion to and invasion of mucosal epithelial cells. The failure of host defenses to eliminate P. aeruginosa from mucosal surfaces results in P. aeruginosa proliferation, sometimes followed by overt infection and tissue destruction. There is growing evidence that associates poor oral health and respiratory infection. An in vitro model system for bacterial invasion of respiratory epithelial cells was used to investigate the influence of oral bacteria on P. aeruginosa epithelial cell invasion. Oral pathogens including Porphyromonas gingivalis, Fusobacterium nucleatum and Aggregatibacter (Actinobacillus) actinomycetemcomitans increased invasion of P. aeruginosa into HEp-2 cells from one- to threefold. In contrast, non-pathogenic oral bacteria such as Actinomyces naeslundii and Streptococcus gordonii showed no significant influence on P. aeruginosa invasion. P. aeruginosa together with oral bacteria stimulated greater cytokine production from HEp-2 cells than did P. aeruginosa alone. P. aeruginosa in combination with periodontal pathogens also increased apoptosis of HEp-2 cells and induced elevated caspase-3 activity. These results suggest that oral bacteria, especially periodontal pathogens, may foster P. aeruginosa invasion into respiratory epithelial cells to enhance host cell cytokine release and apoptosis." @default.
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- W2005194920 date "2009-02-01" @default.
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- W2005194920 title "Oral bacteria modulate invasion and induction of apoptosis in HEp-2 cells by Pseudomonas aeruginosa" @default.
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- W2005194920 doi "https://doi.org/10.1016/j.micpath.2008.10.012" @default.
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