OBJECTIVES: Type V collagen has been demonstrated to control fibril formation. The aim of this study was to develop an ELISA capable of detecting a fragment of type V collagen generated by MMP-2/9 and to evaluate the assay as biomarker for ankylosing spondylitis (AS). DESIGN AND METHODS: A fragment unique to type V collagen and generated by both MMP-2/9 cleaved at the amino acid position 1317 (C5M) was selected for ELISA development. 40 AS patients and 40 age-matched controls were evaluated. RESULTS: An ELISA detecting C5M with inter- and intra-assay variations of 9.1% and 4.4% was developed. C5M levels were significantly higher in AS patients compared to controls, 229% (p<0.0001). The diagnostic AUC was 83%. CONCLUSIONS: This ELISA is the first for detecting type V collagen degradation. AS patients had highly elevated levels of MMP mediated type V collagen degradation. The prognostic and diagnostic values need to be further investigated in additional clinical settings.
OBJECTIVES: Type V collagen has been demonstrated to control fibril formation. The aim of this study was to develop an ELISA capable of detecting a fragment of type V collagen generated by MMP-2/9 and to evaluate the assay as biomarker for ankylosing spondylitis (AS). DESIGN AND METHODS: A fragment unique to type V collagen and generated by both MMP-2/9 cleaved at the amino acid position 1317 (C5M) was selected for ELISA development. 40 AS patients and 40 age-matched controls were evaluated. RESULTS: An ELISA detecting C5M with inter- and intra-assay variations of 9.1% and 4.4% was developed. C5M levels were significantly higher in AS patients compared to controls, 229% (p<0.0001). The diagnostic AUC was 83%. CONCLUSIONS: This ELISA is the first for detecting type V collagen degradation. AS patients had highly elevated levels of MMP mediated type V collagen degradation. The prognostic and diagnostic values need to be further investigated in additional clinical settings.
Authors: Morten A Karsdal; Tina Manon-Jensen; Federica Genovese; Jacob H Kristensen; Mette J Nielsen; Jannie Marie B Sand; Niels-Ulrik B Hansen; Anne-Christine Bay-Jensen; Cecilie L Bager; Aleksander Krag; Andy Blanchard; Henrik Krarup; Diana J Leeming; Detlef Schuppan Journal: Am J Physiol Gastrointest Liver Physiol Date: 2015-03-12 Impact factor: 4.052
Authors: D J Leeming; M A Karsdal; I Byrjalsen; F Bendtsen; J Trebicka; M J Nielsen; C Christiansen; S Møller; A Krag Journal: Aliment Pharmacol Ther Date: 2013-09-15 Impact factor: 8.171