Staphylococcus epidermidis is commonly associated with foreign body infections due to its ability to form biofilms on the surface of indwelling medical devices. Understanding how the biofilms form on the top of devices and interact with the host, particularly, with human blood components, is of great interest. Here we assessed the whole transcriptome of S. epidermidis biofilms upon contact with human blood. Est...
Poly-N-acetyl-glucosamine (PNAG) is a staphylococcal surface polysaccharide influencing biofilm formation that is also under investigation for its vaccine potential. Antibodies that bind to PNAG with either low (<15%) or high (>90%) levels of acetate are superior at opsonic and protective activity compared with antibodies that bind to PNAG with only high levels (>70%) of acetate. PNAG is synthesized by four pro...
Poly-N-acetylglucosamine (PNAG) is a surface polysaccharide produced by Staphylococcus aureus and Staphyloccus epidermidis and is an effective target for opsonic and protective Ab for these two organisms. Recently, it has been found that Escherichia coli produces an exo-polysaccharide, designated polyglucosamine, that is biochemically indistinguishable from PNAG. We analyzed 30 E. coli strains isolated from uri...
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