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- W2895931198 endingPage "53" @default.
- W2895931198 startingPage "40" @default.
- W2895931198 abstract "Acquired resistance to metronidazole, a 5-nitroimidazole drug largely used worldwide in the empirical treatment of infections caused by anaerobes, is worrisome, especially since such resistance has been described in multidrug-resistant anaerobic bacteria. In anaerobes, acquired resistance to metronidazole may be due to a combination of various and complex mechanisms. Among them, nim genes, possibly located on mobile genetic elements, encode nitro-imidazole-reductases responsible for drug inactivation. Since the first description of Nim proteins about 25 years ago, more nim genes have been identified; currently 11 nim genes are known (nimA to nimK). Mostly reported in Bacteroides fragilis group isolates, nim genes are now described in a variety of anaerobic genera encompassing the 4 main groups of Gram-negative and Gram-positive bacilli and cocci, with variable expression ranging from phenotypically silent to low-level or high-level resistance to metronidazole. This review describes the trends of metronidazole resistance rates among anaerobes over the past 20 years and summarizes current knowledge on mechanisms involved in this resistance. It also provides an update on the phylogenetic and geographical distribution of nim genes, the mechanisms involved in their expression and regulation, and their role in metronidazole resistance." @default.
- W2895931198 created "2018-10-26" @default.
- W2895931198 creator A5057847466 @default.
- W2895931198 creator A5075257855 @default.
- W2895931198 creator A5082600079 @default.
- W2895931198 date "2019-02-01" @default.
- W2895931198 modified "2023-10-07" @default.
- W2895931198 title "Metronidazole resistance and nim genes in anaerobes: A review" @default.
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