Related Experiment Video

Updated: Jul 18, 2026

Antibiotic Dereplication Using the Antibiotic Resistance Platform
10:49

Antibiotic Dereplication Using the Antibiotic Resistance Platform

Published on: October 17, 2019

Antibiotics--past, present, and future

Nancy Khardori1

  • 1Department of Internal Medicine, Southern Illinois University School of Medicine, PO Box 19636, Springfield, IL 62794-9636, USA. nkhardori@siumed.edu

The Medical Clinics of North America
|November 23, 2006
PubMed

Insights

Antimicrobial drug therapy targets pathogens, but pathogen evolution complicates treatment. Judicious use of antimicrobials is essential to preserve their future effectiveness against infectious diseases.

Area of Science:

  • Microbiology
  • Pharmacology
  • Infectious Diseases

Background:

  • Drug therapy for non-infectious diseases focuses on the host.
  • Infectious disease treatment aims to eliminate the pathogen from the host.
  • Antimicrobial therapy involves a complex interaction between host, pathogen, and drug.

Purpose of the Study:

  • To highlight the critical role of pathogen characteristics in antimicrobial therapy.
  • To discuss the impact of pathogen evolution on antimicrobial resistance.
  • To emphasize the importance of appropriate antimicrobial use.

Main Methods:

  • Review of historical antimicrobial therapy data.
  • Analysis of pathogen-drug interactions.
  • Discussion of evolutionary principles in antimicrobial resistance.

Main Results:

  • Antimicrobial drugs are directly targeted at the pathogen.
  • Pathogen adaptability and evolution significantly influence treatment outcomes.
  • Historical use of antimicrobials has contributed to increased treatment difficulty.

Conclusions:

  • Antimicrobial therapy effectiveness is intrinsically linked to pathogen biology.
  • The evolution of pathogens poses a significant challenge to antimicrobial efficacy.
  • Appropriate and judicious use of antimicrobial agents is paramount for their continued utility.

More Related Videos

Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing08:19

Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing

Published on: July 7, 2020

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes08:58

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

Published on: March 3, 2023

Related Concept Videos

Antibiotic Selection00:57

Antibiotic Selection

Overview
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...
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...
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...
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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...