sensitivity of Escherichia coli strains with K1 surface antigen and rods without this antigen to the bactericidal effect of serum

The susceptibility of Escherichia coli strains with K1 surface antigen (K1⁺) and rods without this antigen (K1⁻) to the bactericidal action of normal bovine serum and human normal cord serum was determined. Seventy E. coli strains (35 K1⁺and 35 K1⁻) were isolated from urine obtained from children wi...

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Bibliographic Details
Published in:Folia microbiologica 2004, Vol.49 (4), p.471-478
Main Authors: Cisowska, A, Jankowski, S
Format: Article
Language:English
Subjects:
Animals
antibacterial properties
Antigens, Bacterial - immunology
Blood Bactericidal Activity
blood serum
cattle
Child
children
complement
Complement Activation
Escherichia coli
Escherichia coli - immunology
Humans
surface antigens
urinary tract diseases
urine
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Summary:The susceptibility of Escherichia coli strains with K1 surface antigen (K1⁺) and rods without this antigen (K1⁻) to the bactericidal action of normal bovine serum and human normal cord serum was determined. Seventy E. coli strains (35 K1⁺and 35 K1⁻) were isolated from urine obtained from children with urinary tract infections. The strains investigated showed variable sensitivity to the bactericidal action of the sera. E. coli K1⁺strains were characterized by lower sensitivity to bactericidal effect of the sera in comparison with K1⁻rods. The role of the particular mechanisms of complement activation in the process of killing of the E. coli strains was also determined.
ISSN:0015-5632
1874-9356
DOI:10.1007/BF02931611