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. 1985 Dec;22(6):1025–1029. doi: 10.1128/jcm.22.6.1025-1029.1985

Association of slime with pathogenicity of coagulase-negative staphylococci causing nosocomial septicemia.

M A Ishak, D H Gröschel, G L Mandell, R P Wenzel
PMCID: PMC271871  PMID: 4066912

Abstract

To assess the role of slime in the pathogenesis of nosocomial bloodstream infections caused by coagulase-negative staphylococci, we compared the characteristics of 27 nosocomial bloodstream isolates with those of 27 skin isolates from non-hospital personnel. Of 27 bloodstream isolates, 14 were judged to be significant by a clinical index, and 13 were contaminants. Slime production was observed in 13 of 14 significant isolates but in only 3 of 13 contaminants (P = 0.0003) and 4 of 27 skin isolates (P = 0.0001). The 14 pathogens were identified as Staphylococcus epidermidis. Only 7 of 13 contaminants and 9 of 27 skin isolates belonged to the same species (P less than 0.006). Slime-producing strains of S. epidermidis represented 13 of 14 pathogens but only 2 of 13 contaminants (P less than 0.0003). Neither adherence to Teflon catheters nor phagocytosis and killing of coagulase-negative staphylococci by polymorphonuclear leukocytes was significantly influenced by slime production. Nevertheless, the identity of the organism and the slime production test predicted the clinical significance of blood isolates of coagulase-negative staphylococci with an overall accuracy of 89%.

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Selected References

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