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Medicina
Volume 47
Issue 3
10.3390/medicina47030019
Medicina is published by MDPI from Volume 54 Issue 1 (2018). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Elsevier.
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Article

Antibiotic Resistance Mechanisms of Clinically Important Bacteria

1
Department of Microbiology, Medical Academy, Lithuanian University of Health Sciences
2
Department of Laboratory Medicine, Medical Academy, Lithuanian University of Health Sciences
3
Institute for Biomedical Research, Medical Academy, Lithuanian University of Health Sciences, Lithuania
*
Author to whom correspondence should be addressed.
Submission received: 11 May 2010 /Accepted: 17 March 2011 /Published: 22 March 2011

Abstract

Bacterial resistance to antimicrobial drugs is an increasing health and economic problem. Bacteria may be innate resistant or acquire resistance to one or few classes of antimicrobial agents. Acquired resistance arises from: (i) mutations in cell genes (chromosomal mutation) leading to cross-resistance, (ii) gene transfer from one microorganism to other by plasmids (conjugation or transformation), transposons (conjugation), integrons and bacteriophages (transduction). After a bacterium gains resistance genes to protect itself from various antimicrobial agents, bacteria can use several biochemical types of resistance mechanisms: antibiotic inactivation (interference with cell wall synthesis, e.g., β-lactams and glycopeptide), target modification (inhibition of protein synthesis, e.g., macrolides and tetracyclines; interference with nucleic acid synthesis, e.g., fluoroquinolones and rifampin), altered permeability (changes in outer membrane, e.g., aminoglycosides; new membrane transporters, e.g., chloramphenicol), and “bypass” metabolic pathway (inhibition of metabolic pathway, e.g., trimethoprim-sulfamethoxazole).
Keywords:bacteria; antibiotics; resistance mechanismsbacteria;antibiotics;resistance mechanisms

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MDPI and ACS Style

Giedraitienė, A.; Vitkauskienė, A.; Naginienė, R.; Pavilonis, A. Antibiotic Resistance Mechanisms of Clinically Important Bacteria.Medicina2011,47, 19. https://doi.org/10.3390/medicina47030019

AMA Style

Giedraitienė A, Vitkauskienė A, Naginienė R, Pavilonis A. Antibiotic Resistance Mechanisms of Clinically Important Bacteria.Medicina. 2011; 47(3):19. https://doi.org/10.3390/medicina47030019

Chicago/Turabian Style

Giedraitienė, Agnė, Astra Vitkauskienė, Rima Naginienė, and Alvydas Pavilonis. 2011. "Antibiotic Resistance Mechanisms of Clinically Important Bacteria"Medicina 47, no. 3: 19. https://doi.org/10.3390/medicina47030019

APA Style

Giedraitienė, A., Vitkauskienė, A., Naginienė, R., & Pavilonis, A. (2011). Antibiotic Resistance Mechanisms of Clinically Important Bacteria.Medicina,47(3), 19. https://doi.org/10.3390/medicina47030019

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Medicina, EISSN 1648-9144, Published by MDPI
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