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Related Concept Videos

Antibiotic Selection00:57

Antibiotic Selection

Overview
Drug Classes and Categories01:25

Drug Classes and Categories

Drugs can be classified according to their chemical composition or their intended therapeutic application. For instance, anti-infective agents that possess the ability to eliminate pathogens or suppress their growth and reproduction can be grouped based on the organisms they target or their chemical structure. Furthermore, drugs can be divided into prescription, nonprescription, or controlled substances. Prescription medications, such as antibiotics, require oversight from a licensed healthcare...
Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
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...
Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
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...

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Related Experiment Video

Updated: Jul 20, 2026

Stress-induced Antibiotic Susceptibility Testing on a Chip
12:41

Stress-induced Antibiotic Susceptibility Testing on a Chip

Published on: January 8, 2014

Antibiotic classification: implications for drug selection

P G Cuddy1

  • 1Department of Medicine, University of Missouri at Kansas City, School of Medicine, USA.

Critical Care Nursing Quarterly
|December 11, 1997
PubMed
Summary

This antibiotic classification model aids clinicians in selecting critical care agents. It organizes drugs by mechanism of action, spectrum, indications, and pharmacokinetics for informed decision-making.

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Published on: July 24, 2021

Related Experiment Videos

Last Updated: Jul 20, 2026

Stress-induced Antibiotic Susceptibility Testing on a Chip
12:41

Stress-induced Antibiotic Susceptibility Testing on a Chip

Published on: January 8, 2014

Antibiotic Dereplication Using the Antibiotic Resistance Platform
10:49

Antibiotic Dereplication Using the Antibiotic Resistance Platform

Published on: October 17, 2019

Quadruple-Checkerboard: A Modification of the Three-Dimensional Checkerboard for Studying Drug Combinations
11:15

Quadruple-Checkerboard: A Modification of the Three-Dimensional Checkerboard for Studying Drug Combinations

Published on: July 24, 2021

Area of Science:

  • Pharmacology
  • Infectious Diseases
  • Critical Care Medicine

Background:

  • Effective antibiotic selection is crucial for critically ill patients.
  • Clinicians require practical tools to navigate complex antibiotic choices.
  • Understanding antibiotic mechanisms and properties improves patient outcomes.

Purpose of the Study:

  • To present a practical antibiotic classification model for critical care clinicians.
  • To facilitate antibiotic selection based on mechanism of action and other key features.
  • To provide a concise overview of antibiotic classes relevant to intensive care.

Main Methods:

  • Antibiotics classified by mechanism of action: cell-wall inhibitors, nucleic acid inhibitors, and protein-synthesis inhibitors.
  • Further categorization by antibiotic generation is recommended.
  • Information on antimicrobial spectrum, indications, and pharmacokinetics is integrated.

Main Results:

  • A structured model for antibiotic classification is provided.
  • Key differences and characteristics within antibiotic classes are highlighted.
  • Common indications and distinguishing pharmacokinetic features are outlined.

Conclusions:

  • The proposed model offers a useful framework for antibiotic selection in critical care.
  • This classification aids clinicians in making informed therapeutic decisions.
  • Understanding these antibiotic properties is essential for optimizing patient care.