Abstract
Using colony hybridization techniques and DNA probes derived from four distinct tetracycline resistance determinants, we have examined the frequency of these determinants among 225 lactose-fermenting coliforms isolated from fecal samples of both humans and animals. The class B, or Tn10-type determinant, occurred most frequently at 73.3%, followed by class A (on RP1) at 21.7%, and class C (on pSC101) at 8%; 3.5% of isolates harbored two of these determinants. Hybridization to class D, carried by plasmid RA1, was not found among any of the isolates. One isolate failed to hybridize to any of the probes and represents a fifth class of determinant. No dramatic differences were observed in the frequencies of these determinants among four populations examined: hospital, urban, rural, and laboratory. At low stringency conditions of hybridization we were able to demonstrate cross-hybridization of determinant A with class C DNA and limited reaction with class B DNA, but no reaction with class D DNA.
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- Altenbuchner J., Schmid K., Schmitt R. Tn1721-encoded tetracycline resistance: mapping of structural and regulatory genes mediating resistance. J Bacteriol. 1983 Jan;153(1):116–123. doi: 10.1128/jb.153.1.116-123.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Berg D. E., Davies J., Allet B., Rochaix J. D. Transposition of R factor genes to bacteriophage lambda. Proc Natl Acad Sci U S A. 1975 Sep;72(9):3628–3632. doi: 10.1073/pnas.72.9.3628. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Burdett V., Inamine J., Rajagopalan S. Heterogeneity of tetracycline resistance determinants in Streptococcus. J Bacteriol. 1982 Mar;149(3):995–1004. doi: 10.1128/jb.149.3.995-1004.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Chang A. C., Cohen S. N. Construction and characterization of amplifiable multicopy DNA cloning vehicles derived from the P15A cryptic miniplasmid. J Bacteriol. 1978 Jun;134(3):1141–1156. doi: 10.1128/jb.134.3.1141-1156.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grunstein M., Hogness D. S. Colony hybridization: a method for the isolation of cloned DNAs that contain a specific gene. Proc Natl Acad Sci U S A. 1975 Oct;72(10):3961–3965. doi: 10.1073/pnas.72.10.3961. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hillen W., Schollmeier K. Nucleotide sequence of the Tn10 encoded tetracycline resistance gene. Nucleic Acids Res. 1983 Jan 25;11(2):525–539. doi: 10.1093/nar/11.2.525. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Howley P. M., Israel M. A., Law M. F., Martin M. A. A rapid method for detecting and mapping homology between heterologous DNAs. Evaluation of polyomavirus genomes. J Biol Chem. 1979 Jun 10;254(11):4876–4883. [PubMed] [Google Scholar]
- Langridge J., Langridge P., Bergquist P. L. Extraction of nucleic acids from agarose gels. Anal Biochem. 1980 Apr;103(2):264–271. doi: 10.1016/0003-2697(80)90266-3. [DOI] [PubMed] [Google Scholar]
- Mendez B., Tachibana C., Levy S. B. Heterogeneity of tetracycline resistance determinants. Plasmid. 1980 Mar;3(2):99–108. doi: 10.1016/0147-619x(80)90101-8. [DOI] [PubMed] [Google Scholar]
- Scavizzi M. R. Existence de deux caractères transférables de résistance aux tétracyclines. Ann Inst Pasteur (Paris) 1972 Jan;122(1):3–17. [PubMed] [Google Scholar]
- Smith M. D., Hazum S., Guild W. R. Homology among tet determinants in conjugative elements of streptococci. J Bacteriol. 1981 Oct;148(1):232–240. doi: 10.1128/jb.148.1.232-240.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Stüber D., Bujard H. Organization of transcriptional signals in plasmids pBR322 and pACYC184. Proc Natl Acad Sci U S A. 1981 Jan;78(1):167–171. doi: 10.1073/pnas.78.1.167. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Timmis K. N., Cabello F., Cohen S. N. Cloning and characterization of EcoRI and HindIII restriction endonuclease-generated fragments of antibiotic resistance plasmids R6-5 and R6. Mol Gen Genet. 1978 Jun 14;162(2):121–137. doi: 10.1007/BF00267869. [DOI] [PubMed] [Google Scholar]
- Van A. D., Bieth G., Bouanchaud D. H. Résistance plasmidique à la tétracycline chez Haemophilus influenzae. C R Acad Sci Hebd Seances Acad Sci D. 1975 Mar 10;280(10):1321–1323. [PubMed] [Google Scholar]
- Wray L. V., Jr, Jorgensen R. A., Reznikoff W. S. Identification of the tetracycline resistance promoter and repressor in transposon Tn10. J Bacteriol. 1981 Aug;147(2):297–304. doi: 10.1128/jb.147.2.297-304.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]