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Related Concept Videos

Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
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Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
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Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes
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Time-Lapse Epifluorescence Microscopy Imaging of Pseudomonas aeruginosa and Staphylococcus aureus Heterogeneous Phenotypes

Published on: February 14, 2025

Pathogens resistant to antibacterial agents.

Luke F Chen1, Teena Chopra, Keith S Kaye

  • 1Division of Infectious Diseases and International Health, Department of Medicine, Duke University Medical Center, Box 102359, Hanes House, Durham, NC 27710, USA. luke.chen@duke.edu

The Medical Clinics of North America
|June 18, 2011
PubMed
Summary
This summary is machine-generated.

Antimicrobial drug resistance in bacteria is rapidly increasing, spreading beyond hospitals into communities. This review covers the epidemiology, resistance mechanisms, and treatment strategies for these challenging pathogens.

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Pharmacology

Background:

  • Antimicrobial drug resistance is a growing global health threat.
  • Resistant bacteria, previously confined to hospitals, are now prevalent in communities.
  • This includes both gram-positive and gram-negative bacterial pathogens.

Purpose of the Study:

  • To review the current epidemiology of antimicrobial resistance.
  • To discuss the molecular mechanisms underlying bacterial resistance.
  • To outline available and emerging treatment options for resistant infections.

Main Methods:

  • Literature review of epidemiological data.
  • Analysis of molecular mechanisms of resistance.
  • Synthesis of current treatment guidelines and research.

Main Results:

  • Increasing rates of resistance in gram-positive and gram-negative bacteria.
  • Emergence and spread of resistant pathogens in diverse settings (hospitals, nursing homes, community).
  • Identification of key resistance mechanisms and their implications.

Conclusions:

  • Antimicrobial resistance poses a significant and expanding challenge.
  • Understanding resistance patterns and mechanisms is crucial for effective treatment.
  • Continued research and strategic interventions are needed to combat this threat.