[Risk of coagulase-negative staphylococci infections in catheterized patients due to adhesion and slime production].
Coagulase-negative staphylococci are important causes of infections associated with biomaterials, e.g. catheters. Aim of the study was to determine pathogenic traits of S. epidermidis: slime producing and adhesion to biomaterials.


METHODS
The researches have been done on S. epidermidis strains isolated from newborns hospitalized on BCU. Defining an ability of slime production was done by means plate method--according to Christensen. Adhesive abilities of the strains to biomaterials were analyzed by means of Richard's and co. method which consist in estimating the level of a substrates's reduction--TTC (2,3,5-triphenyltetrazolium chloride) to an insoluble formazan.


RESULTS
Among 41 S. epidermidis strains 68% labeled as slime producing and 32% as non-producing. Most of slime producing strains showed reduction value of TTC at +4 and +3. All non-producing S. epidermidis strains showed reduction value of TTC at 2+.


CONCLUSIONS
The strains producing slime displayed greater adhesive abilities in comparison to the non-producing ones.
Bartoszewicz
Marzenna
M
Katedra i Zakład Mikrobiologii Akademii Medycznej we Wrocławiu.
Nowicka
Joanna
J
Przondo-Mordarska
Anna
A
D001422:Bacterial Adhesion; D001431:Bacteriological Techniques; D018441:Biofilms / Q000254:growth & development*; D002408:Catheters, Indwelling / Q000009:adverse effects* / Q000382:microbiology*; D003030:Coagulase; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D018570:Risk Assessment; D012307:Risk Factors; D013203:Staphylococcal Infections / Q000503:physiopathology*; D013212:Staphylococcus epidermidis / Q000302:isolation & purification / Q000472:pathogenicity*
D003030:Coagulase