Journal of Antimicrobial Chemotherapy (1996) 37, 223-232
© 1996 The British Society for Antimicrobial Chemotherapy
research-article |
A Tn1545-like transposon carries the tet(M) gene in tetracycline resistant strains of Bacteroides ureolyticus as well as Ureaplasma urealyticum but not Neisseria gonorrhoeae
aLaboratoire de Bacteriologie, Hospital Pellegrin Place Amelie-Raba-Leon, F-33076 Bordeaux cedex, France bService de Maladies infectieuses et Medecine interne, Hospital Pellegrin Place Amelie-Raba-Leon, F-33076 Bordeaux cedex, France
Received 8 March 1995; returned 11 July 1995; accepted 4 August 1995
The presence of the tet(M) determinant and conjugative transposons related to Tn1545 in urogenital pathogens, Bacteroides ureolyticus (10 strains), Neisseria gonorrhoeae (37 strains) and Ureaplasma ureaiyticum (81 strains), was studied by PCR analysis and hybridization assay. All tetracycline-resistant strains that hybridized with a probe specific for tet(M) gave the expected fragment when their DNA's were subject to PCR. The tet(M) gene and int-Tn, the gene encoding the protein required for the movement of Tn1545-like transposons, were always found together in tetracycline resistant strains of B. ureolyticus and U. urealvticum. In contrast, int-Tn was not detected in tet(M)-mediated tetracycline-resistant N. gonorrhoeae strains. These data suggest carriage of tet(M) by a Tn1545-like transposon in some tetracycline-resistant B. ureolyticus.
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