Antimicrobial Testing
Antimicrobial Testing - Related Videos
10:35
Production and Testing of Antimicrobial Peptides and Their Mimics
0 Views •
2026
This protocol describes a method for producing and evaluating the antimicrobial activity and cytotoxicity of the cationic peptide Mel4 and peptide mimic RK758. By integrating chemical synthesis, recombinant expression, and standardized functional assays, it provides a streamlined workflow for the production and testing of peptides and small-molecule mimics.
09:09
High Throughput, Real-time, Dual-readout Testing of Intracellular Antimicrobial Activity and Eukaryotic Cell Cytotoxicity
0 Views •
Cited by 5 •
2016
A high throughput, real-time assay was developed to simultaneously identify (1) eukaryotic cell-penetrant antimicrobials targeting an intracellular bacterial pathogen, and (2) assess eukaryotic cell cytotoxicity. A variation on the same technology was thereafter combined with digital dispensing technology to enable facile, high-resolution, dose-response, and two- and three-dimensional synergy studies.
12:39
Antimicrobial Susceptibility Testing of Mycobacterium Tuberculosis Complex for First and Second Line Drugs by Broth Dilution in a Microtiter Plate Format
0 Views •
Cited by 29 •
2011
Antimicrobial susceptibility testing of Mycobacterium tuberculosis is challenging but critical for patient care. This microtiter plate format offers testing of 12 antimycobacterial drugs and provides minimum inhibitory concentration (MIC) values, which will aid in appropriate treatment.
09:59
Application of the Intelligent High-Throughput Antimicrobial Sensitivity Testing/Phage Screening System and Lar Index of Antimicrobial Resistance
0 Views •
Cited by 1 •
2023
Here we introduce the principle, structure, and instruction of the intelligent high-throughput antimicrobial sensitivity testing/phage screening system. Its application is illustrated by using Salmonella isolated from poultry in Shandong, China, as an example. The Lar index is calculated, and its significance in evaluating antimicrobial resistance is discussed comprehensively.
06:19
Galleria mellonella as an Antimicrobial Screening Model
0 Views •
Cited by 8 •
2024
This study presents a standardized framework for optimizing G. mellonella infection models for use in preclinical antimicrobial assessment. The application of a G. mellonella model as part of a preclinical antimicrobial development pipeline could decrease the number of ineffective compounds progressing to clinical trials.
FAQs
MIC and MBC describe different antimicrobial outcomes. The minimum inhibitory concentration, or MIC, identifies the concentration associated with stopping microbial growth, whereas the minimum bactericidal concentration, or MBC, reflects bactericidal activity. Considering both measurements can distinguish an agent that primarily suppresses growth from one that demonstrates killing, supporting more informative comparisons among antimicrobial treatments.
These approaches measure antimicrobial activity from different perspectives. Disk diffusion evaluates growth inhibition around an antimicrobial source, broth dilution examines responses across defined concentrations, and time-kill testing follows activity over time. Because each method emphasizes a different feature, selecting among them depends on whether the study needs an inhibition pattern, concentration-based susceptibility information, or a kinetic assessment of microbial response.
Susceptibility results depend on exposing microorganisms to defined antimicrobial concentrations and then measuring their response, such as growth inhibition. Comparing responses across concentrations helps identify how strongly an agent affects a microorganism and can reveal reduced susceptibility associated with resistant strains. Consistent concentration ranges and response measurements are therefore important when comparing isolates, agents, or experiments.
A typical workflow exposes microorganisms to selected, defined concentrations of an antimicrobial agent, measures the resulting response, and interprets the observation as an inhibition or killing outcome. The measurement method changes with the assay: disk diffusion records an inhibition pattern, broth dilution supports concentration-based endpoints, and time-kill testing tracks antimicrobial activity across time.
Time-kill testing is useful when the timing of antimicrobial activity matters, because it follows microbial responses over time rather than providing only a concentration-based endpoint. This approach can show how rapidly an agent affects microorganisms and whether activity changes during the observation period. Such information complements MIC or MBC results when evaluating antimicrobial performance and new therapies.
In immunology and infection research, antimicrobial testing connects laboratory measurements with clinically and biologically relevant questions. Results can help guide antibiotic selection, evaluate new therapies, investigate host-pathogen interactions, and monitor emerging resistant strains. These applications make susceptibility and activity measurements useful not only for treatment decisions, but also for studying how microorganisms respond during infection-related research.