Causative molecular mechanisms accounting for the potential link between Chlamydia pneumoniae and atherosclerosis are unknown. Formalin and heat-inactivated C. pneumoniae activated the transcription factor nuclear factor (NF)-kappaB in cultured porcine endothelium and up-regulated the expression of E-selectin messenger RNA and protein. This up-regulation was abolished by an IkappaB super-repressor, an NF-kappaB-specific inhibitor. Live bacteria are not necessary for the activation of endothelial NF-kappaB, and C. pneumoniae may contribute to atherogenesis without active infection.
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| http://dx.doi.org/10.1086/378564 | DOI Listing |
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