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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 Selection

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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...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
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Updated: Jun 17, 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

Antibiotic resistance.

Kunal J Rambhia1, Gigi Kwik Gronvall

  • 1Center for Biosecurity of the University of Pittsburgh Medical Center, Baltimore, Maryland 21202, USA. krambhia@upmc-biosecurity.org

Biosecurity and Bioterrorism : Biodefense Strategy, Practice, and Science
|December 24, 2009
PubMed
Summary
This summary is machine-generated.

Antibiotic resistance threatens public health and national security by rendering essential medicines ineffective. Urgent policy changes are needed to preserve antibiotic availability for future life-saving treatments.

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Last Updated: Jun 17, 2026

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
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Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection

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Area of Science:

  • Microbiology
  • Public Health
  • National Security

Background:

  • Antibiotic resistance is a growing global threat.
  • Resistant infections are difficult to treat, with limited new drugs in development.
  • Resistance can emerge naturally or be a bioweapon threat.

Purpose of the Study:

  • To describe the impact of antibiotic resistance on health and national security.
  • To explain the mechanisms of bacterial antibiotic resistance.
  • To recommend actions for preserving future antibiotic efficacy.

Main Methods:

  • Literature review of antibiotic resistance mechanisms.
  • Analysis of health and national security implications.
  • Policy recommendation development.

Main Results:

  • Antibiotic resistance compromises treatment of common infections.
  • Emergence of resistance poses risks to both civilian health and biodefense.
  • Current antibiotic development pipeline is insufficient.

Conclusions:

  • Proactive policy interventions are crucial to combat antibiotic resistance.
  • Sustained availability of effective antibiotics is vital for future healthcare and security.
  • Addressing resistance requires a multi-faceted approach including stewardship and innovation.