Volume 10, Number 1—January 2004
Research
Escherichia coli Producing CTX-M-2 β-Lactamase in Cattle, Japan
Table 3
Characteristics of CTX-M-2 β-lactamase-producing Escherichia coli isolated from cattlea
Strain | Source | β-lactamaseb | Plasmid profile (MDa) | Transferred plasmid (MDa) | Frequency of transfer | RAPD pattern |
---|---|---|---|---|---|---|
GS528 | Feces 1 | PC | 33, 50, 86 | 33, 50 | 6 x 10-4 | A |
GS542 | Feces 2 | PC | 33, 50, 86 | 33, 50 | 2 x 10-4 | A |
GS547 | Feces 3 | PC | 33, 50, 86 | 33, 50 | 3 x 10-4 | A |
GS553 | Feces 4 | PC and CS | 33, 50, 61 | 33, 50 | 3 x 10-1 | B |
GS554 | Feces 4 | PC and CS | 33, 50 | 33, 50 | 2 x 10-1 | C |
GS721 | Feces 5 | PC | 33 | 33 | 9 x 10-2 | D |
GS733 | Feces 6 | PC | 33 | 33 | 2 x 10-1 | D |
GS631 | Swabc 1 | PC | 33, 86 | 33 | 5 x 10-1 | E |
GS671 | Swab 2 | PC | 33, 86 | 33 | 6 x 10-1 | E |
aPC, penicillinase; CS, cephalosporinase; RAPD, random amplified polymorphic DNA.
bβ-lactamases were detected by acidmetric β-lactamase test.
cSwab, surface swab of cattle carcass.