Gentamicin enzyme-linked immunosorbent assay for microdialysis samples

Area of Science:

• Pharmacology
• Analytical Chemistry
• Biomedical Engineering

Background:

• Gentamicin is an important antibiotic with a narrow therapeutic index.
• Accurate measurement of gentamicin in biological fluids is crucial for therapeutic drug monitoring.
• Microdialysis allows for in vivo sampling but often yields small sample volumes, posing analytical challenges.

Purpose of the Study:

• To evaluate a commercial gentamicin enzyme-linked immunosorbent assay (ELISA) for quantitative analysis in microdialysis samples.
• To determine the assay's accuracy, precision, sensitivity, and validity for this specific application.
• To establish a potentially superior alternative to existing gentamicin assay methods.

Main Methods:

• Utilized a commercially available gentamicin ELISA kit.
• Performed quantitative analysis of gentamicin concentrations in prepared microdialysis fluid samples.
• Assessed assay performance metrics including accuracy and precision across a defined concentration range.

Main Results:

• The gentamicin ELISA demonstrated good accuracy and precision.
• The assay was effective in the concentration range of 100 to 967 pg/mL.
• The method proved to be highly sensitive and valid for microdialysis samples.

Conclusions:

• The developed quantitative ELISA is a sensitive and valid method for measuring gentamicin in microdialysis samples.
• This ELISA assay presents a viable alternative for gentamicin analysis, especially when sample volume is limited.
• The assay overcomes limitations of other methods regarding sample volume requirements and sensitivity.