Table 2. Serum levels of intact parathyroid hormone (iPTH), osteocalcin (OC), N-terminal propeptide of type I collagen (P1NP), β-C-terminal telopeptide of type I collagen (β-CTX) and matrix metalloproteinases (MMPs) in the different stages of pre-dialysis chronic kidney disease (CKD) and in healthy controls.

CKD: chronic kidney disease, HD: hemodialysis, iPTH: intact parathyroid hormone, OC: osteocalcin, β-CTX: β-C-terminal telopeptide of type I collagen, P1NP: N-terminal propeptide of type I collagen, MMP-1: metalloproteinase-1, MMP-2: metalloproteinase-2. One-way ANOVA analysis was used for comparing quantitative measurements of the study groups. The asterisk (*) indicates statistically signifi cant relationships between the studied parameters.