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Published on: April 18, 2019
Development of a novel assay method for colistin sulphomethate
M Wootton1, H A Holt, A P Macgowan
1Bristol Centre for Antimicrobial Research and Evaluation, Southmead Hospital, North Bristol Healthcare Trust, Westbury-on-Trym, Bristol BS 5NB, UK. mandy.wootton@bristol.ac.uk
Summary
A new microbiological assay accurately quantifies colistin sulphomethate in cystic fibrosis patients. This simple technique is ideal for routine diagnostic labs, supporting effective Pseudomonas aeruginosa infection treatment.
Area of Science:
- Microbiology
- Clinical Chemistry
- Pharmacology
Background:
- Rising incidence of Pseudomonas aeruginosa infections necessitates improved antimicrobial susceptibility testing.
- Colistin therapy is increasingly employed for multidrug-resistant bacterial infections.
- Accurate quantification of colistin levels is crucial for optimizing patient treatment and minimizing toxicity.
Purpose of the Study:
- To develop and validate a rapid and straightforward microbiological assay for colistin sulphomethate.
- To enable precise measurement of colistin sulphomethate concentrations in biological matrices.
- To provide a practical tool for clinical microbiology laboratories managing cystic fibrosis patients.
Main Methods:
- Development of a microbiological assay utilizing standard laboratory equipment.
- Quantification of colistin sulphomethate in serum and urine samples.
- Validation of the assay's accuracy and simplicity for routine diagnostics.
Main Results:
- The described assay provides a quick and simple method for quantifying colistin sulphomethate.
- The technique does not require specialized or expensive equipment.
- The assay is suitable for implementation in routine diagnostic microbiology laboratories.
Conclusions:
- A robust and accessible microbiological assay for colistin sulphomethate has been established.
- This method supports therapeutic drug monitoring for cystic fibrosis patients undergoing colistin treatment.
- The assay facilitates effective management of Pseudomonas aeruginosa infections.
