Novel Class 1 Integron (InS21) Carrying bla _CTX-M-2 in Salmonella enterica Serovar Infantis

Abstract

The genetic organization of the region coding for CTX-M-2 in Salmonella enterica serovar Infantis was determined by PCR mapping. This gene seems to have been mobilized from the Kluyvera ascorbata chromosome to a complex sulI-type integron, similar to In6 and In7

Case Report of Pediatric Gastroenteritis Due to CTX-M-15 Extended-Spectrum β-Lactamase-Producing Salmonella enterica Serotype Enteritidis

“…Since ESBL genes reside on plasmids or integrons, they have the potential to spread to other organisms [13,14]. And indeed, in this study, we successfully demonstrated the transfer of resistance by conjugation, suggesting that blaCTX-M-15 is located on a self-transferable plasmid.…”

“…Among the six groups of CTX-M enzymes, the CTX-M-1, -2, and -9 groups have been reported in serotypes Typhimurium, Enteritidis, Virchow, Kentucky, and Kedougou [5,[13][14][15]. CTX-M-15 ESBL was first reported in E. coli, K. pneumoniae, and Enterobacter aerogenes isolates in [2000][2001] in India [16].…”

Genetic diversity of extraintestinal Escherichia coli strains producers of β-lactamases TEM, SHV and CTX-M associated with health-care

“…En estos ensayos se utilizaron como cepas de control E. coli LMM36-ULA (chuA+ y yjaA +) y E. coli LMM32-ULA (TspE4.C2 +). Detección y secuenciación de los genes bla TEM , bla SHV y bla CTX-M En la detección de los genes codificantes para TEM, SHV y CTX-M en las cepas estudiadas, se utilizaron los iniciadores señalados en el cuadro 1 y las condiciones de amplificación descritas en estudios previos (17)(18)(19)(20).…”

Nosocomial Outbreak of Pediatric Gastroenteritis Caused by CTX-M-14-Type Extended-Spectrum β-Lactamase-Producing Strains of Salmonella enterica Serovar London

“…Among the six groups of CTX-M enzymes (1), the CTX-M-1, -2, and -9 groups have been reported in serovars Typhimurium, Virchow, Enteritidis, Kentucky, Infantis, and Oranienburg (1,3,5,12,19). However, to the best of our knowledge this is the first report of a CTX-M-14 enzymeproducing Salmonella serovar London, which suggests a gradual spread of this resistance to various serovars of Salmonella.…”