A competitive enzyme-linked immunosorbent assay for diminazene

Area of Science:

• Veterinary Medicine
• Analytical Chemistry
• Parasitology

Background:

• Diminazene aceturate is a vital drug for treating trypanosomosis in livestock.
• Current detection methods for diminazene are time-consuming and impractical for routine monitoring.
• Effective monitoring is essential for managing drug efficacy and preventing resistance.

Purpose of the Study:

• To develop and optimize a competitive enzyme-linked immunosorbent assay (ELISA) for detecting diminazene in bovine serum.
• To provide a faster and more efficient method for quantifying diminazene levels in treated animals.
• To support routine drug monitoring and research into diminazene resistance.

Main Methods:

• Development of a competitive ELISA using a diminazene-horseradish peroxidase conjugate.
• Immobilization of rabbit-raised anti-diminazene antibodies on microtitre plates.
• Utilizing tetramethylbenzidine-hydrogen peroxide as the chromogen-substrate system for detection.

Main Results:

• The developed ELISA demonstrated a detection limit of 0.8 ng/ml in bovine serum.
• The assay exhibited high specificity for diminazene with negligible cross-reactivity to other drugs.
• Diminazene was detectable in steers for up to two weeks post-injection at a standard dose.

Conclusions:

• The optimized ELISA offers a sensitive and specific method for diminazene detection in bovine serum.
• This assay facilitates practical monitoring of diminazene treatment in livestock.
• It will aid in understanding drug usage patterns and the emergence of resistance in trypanosomosis control programs.