Table 2

 Binding of peptides to human sera in ELISA

PeptidesControlsControls over mean ±2SDPatients with RA over mean ±2SD
Mean (SD) absorbance(n)(n)
NS, not significant, **p<0.01 and ***p<0.001 compared with controls.
C-telopeptide of α1(I)
    Arginine peptide0.288 (0.142)4/816/120NS
    Citrulline peptide0.314 (0.117)2/8124/120***
C-telopeptide of α2(I)
    Arginine peptide0.692 (0.326)3/8122/120***
    Citrulline peptide0.763 (0.356)3/8112/120**
CC1  =  C-telopeptide of α1(II)
    Arginine peptide0.181 (0.077)2/8154/120***
    Citrulline peptide0.155 (0.065)2/8135/120***
CC2
    Arginine peptide0.162 (0.053)3/8150/120***
    Citrulline peptide0.135 (0.054)1/8125/120***
CC3
    Arginine peptide0.182 (0.0073)2/8163/120***
    Citrulline peptide0.181 (0.067)2/8132/120***
CC4
    Arginine peptide0.179 (0.070)3/8160/120***
    Citrulline peptide0.184 (0.071)2/8122/120***