Association of nesfatin-1 levels and bone remodeling markers in patients with rheumatoid arthritis

Abstract

Aim. To evaluate the association of nesfatin-1 (NF-1) levels and bone remodeling markers in patients with rheumatoid arthritis (RA).Materials and methods. 110 patients (105 women and 5 men) with RA, classified by ACR/EULAR 2010 criteria were enrolled in our study. All patients undergone complete clinical and laboratory examination. NF-1 serum levels were determined using a commercial test-systems (RayBio® Nesfatin Enzyme Immunoassay [EIA] Kit). Statistical analysis was performed using a software package Statistica 12.0. The results were considered statistically significant at p < 0.050.Results. Significant positive correlation was determined between serum NF-1 levels and Intact N-Terminal Propeptide of Type 1 Procollagen (P1NP) levels (r = 0.218; p = 0.022). Serum NF-1 levels were not associated with bone mineral density in lumbar spine and femur. Serum NF-1 levels didn't correlate with body composition indices and Beta-CrossLaps levels. Patients with osteoporosis (n = 53) and osteoporotic fractures (n = 25) had statistically significant higher levels of NF-1 (Z = –2.060; p = 0.040 и Z = –2.370; p = 0.017 respectively). However, serum NF-1 levels didn’t correlate with cumulative dose of glucocorticoids (ρ = 0.090; p = 0.368) and the duration of glucocorticoids intake (ρ = 0.070; p = 0.462).Conclusions. In our study, we determined the significant positive correlation between NF-1 and P1NP levels, supposingly due to NF-1 possible effect on the osteoblasts differentiation and function. Patients with osteoporosis and osteoporotic fractures had higher median blood serum levels of NF-1.