| pubmed-article:2452545 | pubmed:abstractText | Living suspensions of 89 Escherichia coli strains were tested for adsorption to Al(OH)3 gel in the presence of phosphate ions. On the basis of AC50 (phosphate molarity inhibiting 50% adsorption of the strain examined), E. coli strains could be classified into two main groups. Forty-three strains belonged to group 1 (AC50, 0.01-0.04), and 42 of them fell into serogroups O1, O2, O5, O7, O18ac, O83 or were spontaneously agglutinable. One strain in group 1 was exceptional as it had antigen O4. Of these 43 strains 33 had K antigen K1. Serogroup distribution of 46 group 2 strains (AC50, 0.001-0.009) was O2, O4, O6, O18ac, O75 and O78; 20 out of 46 possessed antigen K5. No correlation existed between H antigens or haemagglutinating capacity and AC50 of the strains. A close correlation was shown between AC50 pattern and the two main pathogenecity groups (i.e. "newborns' meningitis" and "sepsis and organotropic diseases") on one hand and between AC50 pattern and O, K serotypes on the other. The findings indicate that these E. coli strains with identical markers had a clonal connection. | lld:pubmed |
