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Cited by 265

The DOI matches its Crossref record; 141 of the 141 references it cites were found in a registry or an index.

Amikacin: Uses, Resistance, and Prospects for Inhibition

Open access
Ramirez, Maria, Tolmasky, Marcelo·2017·Molecules

Abstract

Aminoglycosides are a group of antibiotics used since the 1940s to primarily treat a broad spectrum of bacterial infections. The primary resistance mechanism against these antibiotics is enzymatic modification by aminoglycoside-modifying enzymes that are divided into acetyl-transferases, phosphotransferases, and nucleotidyltransferases. To overcome this problem, new semisynthetic aminoglycosides were developed in the 70s. The most widely used semisynthetic aminoglycoside is amikacin, which is refractory to most aminoglycoside modifying enzymes. Amikacin was synthesized by acylation with the l-(−)-γ-amino-α-hydroxybutyryl side chain at the C-1 amino group of the deoxystreptamine moiety of kanamycin A. The main amikacin resistance mechanism found in the clinics is acetylation by the aminoglycoside 6′-N-acetyltransferase type Ib [AAC(6′)-Ib], an enzyme coded for by a gene found in integrons, transposons, plasmids, and chromosomes of Gram-negative bacteria. Numerous efforts are focused on finding strategies to neutralize the action of AAC(6′)-Ib and extend the useful life of amikacin. Small molecules as well as complexes ionophore-Zn+2 or Cu+2 were found to inhibit the acetylation reaction and induced phenotypic conversion to susceptibility in bacteria harboring the aac(6′)-Ib gene. A new semisynthetic aminoglycoside, plazomicin, is in advance stage of development and will contribute to renewed interest in this kind of antibiotics.

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Metadata

Authors
Ramirez, M., & Tolmasky, M.
Venue
Molecules
Publisher
MDPI AG
Published
2017-12-19
Volume
22
Issue
12
Pages
2267
ISSN
1420-3049 (ISSN-L)
OpenAlex
W2778440939
Cited by
265
References
141
FWCI
5.09
Type
journal article
Language
en
Open access
gold

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Ramirez, M., & Tolmasky, M. (2017). Amikacin: Uses, Resistance, and Prospects for Inhibition. Molecules. https://doi.org/10.3390/molecules22122267

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