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Open AccessJournal ArticleDOI

Multidrug Resistance in Bacteria

Hiroshi Nikaido
- 02 Jun 2009 - 
- Vol. 78, Iss: 1, pp 119-146
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TLDR
This review discusses the current knowledge on the molecular mechanisms involved in both types of resistance in bacteria.
Abstract
Large amounts of antibiotics used for human therapy, as well as for farm animals and even for fish in aquaculture, resulted in the selection of pathogenic bacteria resistant to multiple drugs. Multidrug resistance in bacteria may be generated by one of two mechanisms. First, these bacteria may accumulate multiple genes, each coding for resistance to a single drug, within a single cell. This accumulation occurs typically on resistance (R) plasmids. Second, multidrug resistance may also occur by the increased expression of genes that code for multidrug efflux pumps, extruding a wide range of drugs. This review discusses our current knowledge on the molecular mechanisms involved in both types of resistance.

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Citations
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Journal ArticleDOI

Molecular mechanisms of antibiotic resistance.

TL;DR: Recent advances in understanding of the mechanisms by which bacteria are either intrinsically resistant or acquire resistance to antibiotics are reviewed, including the prevention of access to drug targets, changes in the structure and protection of antibiotic targets and the direct modification or inactivation of antibiotics.
Journal ArticleDOI

Antibiotic resistance and its cost: is it possible to reverse resistance?

TL;DR: The findings suggest that the fitness costs of resistance will allow susceptible bacteria to outcompete resistant bacteria if the selective pressure from antibiotics is reduced, and that the rate of reversibility will be slow at the community level.
Journal ArticleDOI

Efflux-mediated drug resistance in bacteria: an update.

Xian-Zhi Li, +1 more
- 20 Aug 2009 - 
TL;DR: The multifaceted implications of drug efflux transporters warrant novel strategies to combat multidrug resistance in bacteria.
Journal ArticleDOI

Chemical use in salmon aquaculture: A review of current practices and possible environmental effects

TL;DR: The World Wildlife Fund is facilitating a dialogue on impacts of salmon Aquaculture to establish the state of knowledge in seven subject areas associated with the industry: benthic impacts, nutrient loading, escapees, chemical inputs, diseases, feeds and social issues and to establish international standards for salmon aquaculture practices.
Journal ArticleDOI

Antimicrobial use in aquaculture re‐examined: its relevance to antimicrobial resistance and to animal and human health

TL;DR: Excessive use of antimicrobials in aquaculture can potentially negatively impact animal and human health as well as the aquatic environment and should be better assessed and regulated.
References
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Journal ArticleDOI

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TL;DR: Two unusual extensions are presented: Multiscale, which adds the ability to visualize large‐scale molecular assemblies such as viral coats, and Collaboratory, which allows researchers to share a Chimera session interactively despite being at separate locales.
Journal ArticleDOI

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TL;DR: Unlike eukaryotes, which evolve principally through the modification of existing genetic information, bacteria have obtained a significant proportion of their genetic diversity through the acquisition of sequences from distantly related organisms.
Journal ArticleDOI

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TL;DR: The characteristics, epidemiology, and detection of the carbapenemases found in pathogenic bacteria are updates and metallo-β-lactamases are detected primarily in Pseudomonas aeruginosa.
Journal ArticleDOI

Niemann-Pick C1 Like 1 protein is critical for intestinal cholesterol absorption.

TL;DR: It is shown that Niemann-Pick C1Like 1(NPC1L1) protein plays a critical role in the absorption of intestinal cholesterol, and resides in an ezetimibe-sensitive pathway responsible for intestinal cholesterol absorption.
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