BACKGROUND: VIM metallo-β-lactamases are enzymes characterized by the ability to hydrolyze all β-lactams. Usually, blaVIM-like genes are carried by class 1 integrons. In the Czech Republic, only sporadic cases of VIM-producing Enterobacterales have been reported in which those isolates carried the VIM-1 carbapenemase-encoding integron In110. However, during 2019-2020, an increased number was reported. Therefore, the aim of the current study was to characterize the genetic elements involved in the increased spread of blaVIM genes. MATERIALS AND METHODS: 32 VIM-producing Enterobacterales collected between 2019 and 2020 were subjected to: antimicrobial susceptibility testing, integron analysis, and short reads sequencing. Based on the results, 19 isolates were selected as representative and sequenced using Sequel I platform. RESULTS: The 32 VIM-producing isolates exhibited variations in the MICs of carbapenems. Based on short-read data, 26 of the 32 sequenced isolates harbored the blaVIM-1 allele while six isolates carried the blaVIM-4 gene. The most prevalent was the In110 integron (n = 24) and two isolates carried the In4873 class 1 integron. The blaVIM-4 allele was identified in class 1 integrons In1174 (n = 3), In416 (n = 1), In2143 (n = 1) and In2150. Long reads sequencing revealed that the blaVIM was carried by: pKPC-CAV1193-like (n = 6), HI1 (pNDM-CIT; n = 4), HI2 (n = 3), FIB (pECLA; n = 2) and N (n = 1) incompatibility groups. Two blaVIM-carrying plasmids could not be typed by the database, while another one was integrated into the chromosome. CONCLUSION: We observed the spread of VIM-encoding integrons, mainly of In110, among Enterobacterales isolated from Czech hospitals, but also an increased number of novel elements underlining the ongoing evolution.

• Publikační typ
• časopisecké články MeSH

A VIM-1-producing ST92 Enterobacter cloacae was isolated in a Czech hospital. blaVIM-1 was part of the class 1 integron In110 carried by a Tn1721-like transposon. Tn1721-like was located on a ColE1-like plasmid, pEncl-30969cz (33,003 bp). Target site duplications at the boundaries of Tn1721-like suggested its transposition into the pEncl-30969cz backbone.

• MeSH
• antibakteriální látky farmakologie   MeSH
• bakteriální proteiny genetika   MeSH
• beta-laktamasy genetika   MeSH
• beta-laktamová rezistence genetika   MeSH
• DNA bakterií analýza   genetika   MeSH
• Enterobacter cloacae genetika   MeSH
• enterobakteriální infekce mikrobiologie   MeSH
• integrony genetika   MeSH
• lidé MeSH
• mikrobiální testy citlivosti MeSH
• plazmidy genetika   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

Two multidrug resistance (MDR) plasmids, carrying the VIM-1-encoding integron In110, were characterized. Plasmid pLec-476cz (311,758 bp), from aLeclercia adecarboxylataisolate, consisted of an IncHI1 backbone, a MDR region, and two accessory elements. Plasmid pKpn-431cz (142,876 bp), from a sequence type 323 (ST323)Klebsiella pneumoniaeisolate, comprised IncFIIY-derived and pKPN3-like sequences and a mosaic region. A 40,400-bp sequence of pKpn-431cz was identical to the MDR region of pLec-476cz, indicating theen blocacquisition of the VIM-1-encoding region from one plasmid by the other.

• MeSH
• bakteriální proteiny genetika   MeSH
• beta-laktamasy genetika   MeSH
• beta-laktamová rezistence genetika   MeSH
• DNA bakterií genetika   MeSH
• integrony genetika   MeSH
• Klebsiella pneumoniae účinky léků   genetika   MeSH
• lidé MeSH
• mnohočetná bakteriální léková rezistence genetika   MeSH
• plazmidy genetika   MeSH
• sekvence nukleotidů MeSH
• sekvenční analýza DNA MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH

OBJECTIVES: The objective of this study was to perform a multinational survey of patients' colonization by metallo-β-lactamase (MBL)-producing Enterobacteriaceae, including their molecular characterization. METHODS: Patients in 18 hospital units across Europe and Israel (n = 17 945) were screened between mid-2008 and mid-2011. MBL-producing isolates were typed by PFGE and MLST. MBL genes were amplified and sequenced within their integrons. Plasmids with MBL genes were analysed by nuclease S1 plus hybridization profiling, mating and transformation assays, and by PCR-based replicon typing. RESULTS: Ninety-one patients in nine centres (six countries), including 62 patients in two Greek ICUs, carried 94 non-duplicate MBL-producing organisms. Klebsiella pneumoniae isolates from Greece dominated (n = 57) and belonged mainly to ST147, ST36 and ST383. All but one of the isolates expressed VIM-1-type MBLs. Isolates of Greek origins produced five enzymes, including new VIM-39, encoded by class 1 integrons of four types. In-e541-like elements prevailed, comprising six variants located on IncR, IncFIIK, IncR + FIIK, IncR + A/C or non-typeable plasmids. The other group were new In4873 and In4863, being the first In416-like elements identified in Greece, which were present on IncA/C or non-typeable plasmids. Isolates from other countries produced only VIM-1 and the major integron was In916, identified in 16 organisms from France, Italy and Spain. In916 was carried by four plasmid types, including IncA/C, IncFIIK and IncHI2. Other integrons included a new element, In3103, in Spain and In110 identified only in Latvia. CONCLUSIONS: This study provided fully comparable data on the occurrence and molecular characteristics of VIM-producing Enterobacteriaceae in a group of hospital units across Europe, documenting recent changes in their epidemiology.

• MeSH
• bakteriální geny MeSH
• beta-laktamasy sekrece   MeSH
• DNA bakterií chemie   genetika   MeSH
• Enterobacteriaceae klasifikace   enzymologie   genetika   izolace a purifikace   MeSH
• enterobakteriální infekce epidemiologie   mikrobiologie   MeSH
• jednotky intenzivní péče MeSH
• lidé MeSH
• molekulární epidemiologie MeSH
• multilokusová sekvenční typizace MeSH
• nemocnice MeSH
• plazmidy analýza   MeSH
• polymerázová řetězová reakce MeSH
• přenašečství epidemiologie   mikrobiologie   MeSH
• pulzní gelová elektroforéza MeSH
• sekvenční analýza DNA MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• Evropa MeSH