scholarly journals Colistin-resistant Escherichia coli belonging to different sequence types: genetic characterization of isolates responsible for colonization, community- and healthcare-acquired infections

2021 ◽  
Vol 63 ◽  
Author(s):  
Yrving Paiva ◽  
Debora Satie Nagano ◽  
Andre Luis Franco Cotia ◽  
Thais Guimarães ◽  
Roberta Cristina Ruedas Martins ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Genetic Characterization ◽  
Healthcare Acquired Infections ◽  
Sequence Types

scholarly journals Genetic Characterization of Plasmid-mediated qepA Gene Among ESBL-producing Escherichia Coli Isolates in Mexico

2021 ◽  
Author(s):  
Humberto Barrios-Camacho ◽  
Josefina Duran-Bedolla ◽  
Jesus Silva-Sanchez ◽  
Luis Lozano-Aguirre ◽  
Fernando Reyna-Flores ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Molecular Characterization ◽  
Genetic Characterization ◽  
Insertion Sequences ◽  
Plasmid Sequence ◽  
E Coli ◽  
Multiple Copies ◽  
Chromosomal Mutations ◽  
Sequence Types

Abstract A molecular characterization of a plasmid-born qepA gene in (ESBL)-producing E. coli clinical isolates were performed. An 2.63% (11/418) were qepA positive isolates, of which a 90.0% carried CTX-M-15 (9/11) and SHV-12 (1/11). All isolates showed chromosomal mutations in the gyrA and parC genes. The clonal groups A, B and C were identified and belonged to, respectively, phylogroups A, B1 and D, as well as the sequence types 205, 405 and 617. Several plasmid profiles were determined with incompatibility groups FIA, FIB and FII. The genetic environment of the qepA in plasmid pEC8020 was different from those reported previously. The plasmid sequence included genes conferring resistance to β-lactams (blaCTX-M-15), macrolides (mphA), fluoroquinolones (qepA1), trimethoprim (dfrB4) and sulphonamides (sul1). Likewise, the IncF-pEC8020 plasmid carried several insertion sequences including ISCR3, IS6100 and multiple copies of IS26. This work contributes to the epidemiology and genetics of plasmid-born qepA genes of ESBL-producing E. coli.

scholarly journals Physical and genetic characterization of the melibiose operon and identification of the gene products in Escherichia coli.

1984 ◽  
Vol 259 (3) ◽  
pp. 1807-1812 ◽  
Author(s):  
M Hanatani ◽  
H Yazyu ◽  
S Shiota-Niiya ◽  
Y Moriyama ◽  
H Kanazawa ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Genetic Characterization ◽  
Gene Products

Genetic characterization of the gene hupB encoding the HU-1 protein of Escherichia coli

Gene ◽  
1986 ◽  
Vol 45 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Kano Yasunobu ◽  
Wada Morimasa ◽  
Nagase Takahiro ◽  
Imamoto Fumio
Keyword(s):  
Escherichia Coli ◽  
Genetic Characterization

Physical and genetic characterization of cloned enterobactin genomic sequences from Escherichia coli K-12

Gene ◽  
1985 ◽  
Vol 34 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Timothy P. Fleming ◽  
Mary Schrodt Nahiik ◽  
J.B. Neilands ◽  
Mark A. McIntosh
Keyword(s):  
Escherichia Coli ◽  
Genetic Characterization ◽  
Genomic Sequences ◽  
K 12

Genetic characterization of the O4 polysaccharide gene cluster from Escherichia coli

1991 ◽  
Vol 10 (5) ◽  
pp. 351-361 ◽  
Author(s):  
Gayle E. Haraguchi ◽  
Ulrich Zähringer ◽  
Barbara Jann ◽  
Klaus Jann ◽  
Richard A. Hull ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gene Cluster ◽  
Genetic Characterization
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