Serum concentrations of aminoterminal propeptide of type III procollagen and propeptide of human type I procollagen in systemic lupus erythematosus
Abstract
The purpose of this study was to assess the association between the serum levels of aminoterminal propeptide of type III procollagen (PIIINP) and carboxyterminal propeptide of type I procollagen (PICP) with disease activity and damage in systemic lupus erythematosus (SLE). Thirty-three patients with SLE were compared with 31 controls. The assessment in SLE included disease activity indices (SLEDAI, MEX-SLEDAI) and damage index (SLICC/ACR). PIIINP and PICP were measured by radioimmunoassay. Compared with controls, mean levels of PIIINP were higher in SLE (2.9±1.8 vs. 1.8±1.2, P=0.006). PICP was also increased in SLE versus controls (163±94 vs. 102±62, P=0.007). PIIINP was correlated with SLICC/ACR (r=0.33, P=0.048). No correlation was observed between PICP and PIIINP with other clinical or therapeutic variables. These preliminary data suggests a role of PIIINP as a marker for chronic damage. Follow-up studies are required to evaluate its utility in predicting future damage.
Keywords
PIIINP PICP SLE SLICC/ACR damageNotes
Acknowledgments
Grants: The study was supported by Funding of CONACyT Mexico. Grants: 20000302009 and MICH-2003-C01-12442 and by the IMSS-FOFOI FP:0038/1219.
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