Clinical validation of an automated fluorogenic factor XIII activity assay based on isopeptidase activity

Leitner, Martina, Büchold, Christian, Pasternack, Ralf, Binder, Nikolaus B. ORCID: https://orcid.org/0000-0002-1237-8102 and Moore, Gary W. ORCID: https://orcid.org/0000-0002-2987-281X (2021) Clinical validation of an automated fluorogenic factor XIII activity assay based on isopeptidase activity. International Journal of Molecular Sciences, 22 (3) , e1002. ISSN 1661-6596 [Article] (doi:10.3390/ijms22031002)

[img]
Preview
PDF - Published version (with publisher's formatting)
Available under License Creative Commons Attribution.

Download (1MB) | Preview

Abstract

Hereditary factor XIII (FXIII) deficiency is a rare autosomal bleeding disorder which can cause life-threatening bleeding. Acquired deficiency can be immune-mediated or due to increased consumption or reduced synthesis. The most commonly used screening test is insensitive, and widely used quantitative assays have analytical limitations. The present study sought to validate Technofluor FXIII Activity, the first isopeptidase-based assay available on a routine coagulation analyser, the Ceveron s100. Linearity was evidenced throughout the measuring range, with correlation coefficients of >0.99, and coefficients of variation for repeatability and reproducibility were 5% and 10%, respectively. A normally distributed reference range of 47.0−135.5 IU/dL was derived from 154 normal donors. Clinical samples with Technofluor FXIII Activity results between 0 and 167.0 IU/dL were assayed with Berichrom® FXIII Activity, a functional ammonia release assay, and the HemosIL™ FXIII antigen assay, generating correlations of 0.950 and 0.980, respectively. Experiments with a transglutaminase inhibitor showed that Technofluor FXIII Activity can detect inhibition of enzymatic activity. No interference was exhibited by high levels of haemolysis and lipaemia, and interference by bilirubin was evident at 18 mg/dL, a level commensurate with severe liver disease. Technofluor FXIII Activity is a rapid, accurate and precise assay suitable for routine diagnostic use with fewer interferents than ammonia release FXIII activity assays.

Item Type: Article
Additional Information: This article belongs to the Special Issue Fibrinogen/Fibrin, Factor XIII and Fibrinolysis in Diseases.
Keywords (uncontrolled): automation, bleeding disorder, blood coagulation, clinical validation, diagnostic assay, factor XIII, isopeptidase, transglutaminase
Research Areas: A. > School of Science and Technology
Item ID: 31866
Useful Links:
Depositing User: Jisc Publications Router
Date Deposited: 25 Jan 2021 09:30
Last Modified: 11 Feb 2021 09:36
URI: https://eprints.mdx.ac.uk/id/eprint/31866

Actions (login required)

View Item View Item

Statistics

Downloads
Activity Overview
12Downloads
32Hits

Additional statistics are available via IRStats2.