Quantitative enzyme-linked immunosorbent assay (ELISA) for hirudin

Area of Science:

• Biochemistry
• Analytical Chemistry
• Immunology

Background:

• Hirudin is a potent anticoagulant with clinical significance.
• Accurate quantification of hirudin is essential for therapeutic monitoring and research.
• Existing methods for hirudin detection may have limitations in sensitivity or applicability.

Purpose of the Study:

• To develop and validate a reproducible competitive ELISA assay for hirudin quantification.
• To establish the sensitivity and dynamic range of the assay in different matrices.
• To provide a reliable tool for measuring hirudin in biological samples.

Main Methods:

• Development of a competitive enzyme-linked immunosorbent assay (ELISA).
• Conjugation of horseradish peroxidase (HRP) to hirudin using N-succinimidyl-3-(2-pyridyldithio)-propionate.
• Assay validation in buffer and urine matrices.

Main Results:

• The developed ELISA assay demonstrated reproducible quantitation of hirudin.
• The assay exhibited a lower limit of sensitivity of 8 ng/ml (0.08 AT-U) in both buffer and urine.
• The upper limit of quantification was determined to be 7.7 µg/ml (78.45 AT-U).

Conclusions:

• A robust competitive ELISA assay for hirudin has been successfully developed.
• The assay is suitable for quantifying hirudin in buffer and urine with high sensitivity and a wide dynamic range.
• This assay provides a valuable tool for hirudin measurement in various scientific and clinical settings.