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© Research
Publication : Antimicrobial agents and chemotherapy

Conjugal transfer of plasmid DNA from Enterococcus faecalis to Escherichia coli in digestive tracts of gnotobiotic mice

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Antimicrobial agents and chemotherapy - 01 Feb 1992

Doucet-Populaire F, Trieu-Cuot P, Andremont A, Courvalin P

Link to Pubmed [PMID] – 1605622

Antimicrob. Agents Chemother. 1992 Feb;36(2):502-4

We have studied the transfer of the conjugative shuttle plasmid pAT191, which confers resistance to kanamycin, from Enterococcus faecalis to Escherichia coli in the digestive tracts of six gnotobiotic mice. Colonies of E. coli resistant to kanamycin were isolated from the feces of two mice, respectively, on days 25 and 35 after the beginning of the experiment and never thereafter. The transfer frequency of pAT191, expressed as the number of transconjugants per donor cell isolated from intestines of sacrificed mice, was 3 x 10(-9). These results indicate that conjugation is a mechanism that could account for the resistance gene flux from gram-positive to gram-negative bacteria observed in nature.

http://www.ncbi.nlm.nih.gov/pubmed/1605622