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Fifty-four epidemiologically unrelated multidrug-resistant Salmonella enterica serovar Typhimurium isolates, collected between 1992 and 2000 in Italy, were analyzed for the presence of integrons. Strains were also tested for Salmonella genomic island 1 (SGI1), carrying antibiotic resistance genes in DT104 strains. A complete SGI1 was found in the majority of the DT104 strains. Two DT104 strains, showing resistance to streptomycin-spectinomycin and sulfonamides, carried a partially deleted SGI1 lacking the flost, tetR, and tetA genes, conferring chloramphenicol-florfenicol and tetracycline resistance, and the integron harboring the pse-1 gene cassette, conferring ampicillin resistance. The presence of SGI1 was also observed in serovar Typhimurium strains belonging to other phage types, suggesting either the potential mobility of this genomic island or changes in the phage-related phenotype of DT104 strains.

Antibiotic resistance genes and Salmonella genomic island 1 in Salmonella enterica serovar Typhimurium isolated in Italy / Carattoli, A; Filetici, E; Villa, L; Dionisi, Am; Ricci, A; Luzzi, I.. - In: ANTIMICROBIAL AGENTS AND CHEMOTHERAPY. - ISSN 0066-4804. - 46:9(2002), pp. 2821-2828. [10.1128/AAC.46.9.2821-2828.2002]

Antibiotic resistance genes and Salmonella genomic island 1 in Salmonella enterica serovar Typhimurium isolated in Italy

Carattoli A
;
2002

Abstract

Fifty-four epidemiologically unrelated multidrug-resistant Salmonella enterica serovar Typhimurium isolates, collected between 1992 and 2000 in Italy, were analyzed for the presence of integrons. Strains were also tested for Salmonella genomic island 1 (SGI1), carrying antibiotic resistance genes in DT104 strains. A complete SGI1 was found in the majority of the DT104 strains. Two DT104 strains, showing resistance to streptomycin-spectinomycin and sulfonamides, carried a partially deleted SGI1 lacking the flost, tetR, and tetA genes, conferring chloramphenicol-florfenicol and tetracycline resistance, and the integron harboring the pse-1 gene cassette, conferring ampicillin resistance. The presence of SGI1 was also observed in serovar Typhimurium strains belonging to other phage types, suggesting either the potential mobility of this genomic island or changes in the phage-related phenotype of DT104 strains.
2002
ampicillin; antibiotic agent; chloramphenicol; florfenicol; spectinomycin; streptomycin; sulfonamide; tetracycline, antibiotic resistance; article; bacterial gene; bacterial strain; bacteriophage typing; bacterium isolate; bacterium isolation; gene cassette; integron; Italy; multidrug resistance; nonhuman; nucleotide sequence; phenotype; priority journal; Salmonella enterica, Blotting, Southern; Cloning, Molecular; DNA, Bacterial; Drug Resistance, Microbial; Electrophoresis, Gel, Pulsed-Field; Genes, Bacterial; Genome, Bacterial; Humans; Italy; Molecular Sequence Data; Salmonella enterica; Salmonella Infections
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Antibiotic resistance genes and Salmonella genomic island 1 in Salmonella enterica serovar Typhimurium isolated in Italy / Carattoli, A; Filetici, E; Villa, L; Dionisi, Am; Ricci, A; Luzzi, I.. - In: ANTIMICROBIAL AGENTS AND CHEMOTHERAPY. - ISSN 0066-4804. - 46:9(2002), pp. 2821-2828. [10.1128/AAC.46.9.2821-2828.2002]
01a Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1284894
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