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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...
Antibiotic Selection00:57

Antibiotic Selection

Overview
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

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...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

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...
Microbiota Modulation by Antibiotics01:21

Microbiota Modulation by Antibiotics

Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
Genomic DNA in Prokaryotes00:46

Genomic DNA in Prokaryotes

The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...

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Related Experiment Video

Updated: Jul 19, 2026

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
08:58

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes

Published on: March 3, 2023

[Trends in global antibiotic resistance].

Niels Frimodt-Møller1, Anette M Hammerum, Line Bagger-Skjøt

  • 1Statens Serum Institut, Afdeling for Antibiotikaresistens og Sygehushygiejne. nfm@ssi.dk

Ugeskrift for Laeger
|September 27, 2006
PubMed
Summary

Antibiotic resistance is a growing global threat, with multidrug-resistant bacteria causing significant health issues. Controlling antibiotic use is crucial to preserve the effectiveness of existing medications.

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Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance

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Last Updated: Jul 19, 2026

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
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Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance
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Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance

Published on: May 2, 2018

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Public Health

Context:

  • Antibiotic resistance is a significant worldwide challenge, impacting healthcare systems globally.
  • Multidrug-resistant bacteria, including staphylococci, Enterobacteriaceae, and Mycobacterium tuberculosis, contribute to increased morbidity, mortality, and healthcare costs.
  • The pharmaceutical industry's declining interest in antibiotic development limits the availability of new effective treatments for the next 10-15 years.

Purpose:

  • To highlight the escalating global crisis of antibiotic resistance.
  • To emphasize the severe consequences of multidrug-resistant infections.
  • To underscore the urgent need for strategies to preserve the efficacy of current antibiotics.

Summary:

  • The increasing prevalence of antibiotic resistance poses a substantial threat to global public health.
  • Multidrug-resistant organisms are associated with severe clinical outcomes and escalating healthcare expenditures.
  • Given the limited pipeline of new antibiotics, the primary strategy to combat resistance involves the judicious control of antibiotic usage.

Impact:

  • Effective antibiotic stewardship programs are essential to mitigate the spread of resistance.
  • Preserving the activity of existing antibiotics is critical for managing bacterial infections.
  • This underscores the need for global cooperation and policy interventions to address the antibiotic resistance crisis.