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Global distribution of plasmid‐mediated colistin resistance mcr gene in Salmonella : A systematic review
Author(s) -
Portes Ana Beatriz,
Rodrigues Grazielle,
Leitão Mylenna Palma,
Ferrari Rafaela,
Conte Junior Carlos Adam,
Panzenhagen Pedro
Publication year - 2022
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.15282
Subject(s) - colistin , salmonella , biology , mcr 1 , plasmid , antibiotic resistance , microbiology and biotechnology , salmonella enterica , gene , transmission (telecommunications) , serotype , antimicrobial , genetics , enterobacteriaceae , bacteria , escherichia coli , antibiotics , electrical engineering , engineering
A bstract This systematic review focuses on obtaining the most relevant information from multiple studies that detected a mobilized colistin resistance mcr gene in Salmonella for a better comprehension of its global distribution. A group of strategic and systematic keywords were combined to retrieve research data on the detection frequency of the mcr gene globally from four database platforms (Google Scholar, Science Direct, PubMed and Scielo). Forty‐eight studies attended all the eligibility criteria and were selected. China was the country with the highest frequency of Salmonella strains with the mcr gene, and Europe exhibited a wide diversity of countries with positive mcr strains. In addition, animals and humans carried the highest frequency of positive strains for the mcr gene. Salmonella Typhimurium was the most frequent serovar carrying the mcr gene. Apparently, colistin overuse in animal husbandry has increased the selective pressure of antimicrobial resistance, resulting in the emergence of a plasmid‐mediated colistin resistance mcr gene in China. The mcr ‐positive Salmonella strains are recently predominant worldwide, which is probably due to the capacity of this gene to be swiftly horizontally transmissible. The transmission ability of mcr ‐positive Salmonella strains to humans through the consumption of contaminated animal‐based food is a public health concern.

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