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SOME BONE METABOLIC PARAMETERS IN PATIENTS WITH EARLY RHEUMATOID ARTHRITIS

https://doi.org/10.14412/1995-4484-2010-1165

Abstract

Objective: To define the specific features of bone metabolism and to estimate bone mineral density (BMD) in patients with early rheumatoid
arthritis (ERA).
Subjects and methods. Fifty-three patients (9 males and 44 females) with ERA were examined. Markers of bone metabolism markers were
assessed, by measuring the serum levels of osteocalcin and C-terminal telopeptides (bCrosslaps) by electrochemoluminescence immunoassay
and those of type II interleukin (IL) 1 receptor (IL1RII) and IL-6 by enzyme-linked immunosorbent assay. Bone mineral density
(BMD) was studied by distal forearm densitometry (dual-energy X-ray absorptiometry) on a DexaScan DX-10 apparatus. BMD was estimated
in postmenopausal women by the T-test and in men and premenopausal women by the Z-test, as well as by the absolute value of
BMD (g/cm2).
Results. In patients with ERA, the level of bCrosslaps was 0.50.3 ng/ml (p<0.05) and that of osteocalcin was 209.9 ng/ml (p>0.05),
which is accordingly higher and lower than the reference values. There were no changes in these parameters in relation to serogroup and Xray
disease stage. With higher ERA activity, there was a tendency for bCrosslaps to increase and osteocalcin to remain unchanged. There
was a tendency towards decreased IL1 RII and increased proinflammatory IL-6 levels. Correlation analysis revealed a correlation between
the value of BMD and the content of bCrosslaps and osteocalcin in patients with ERA and between the levels of IL-6 and bCrosslaps.
Regression analysis showed a significant impact of the parameters of the course of the disease and immunological parameters on BMD
changes and bone metabolism markers. Age and body mass index also affected the parameters of BMD in patients with ERA.

References

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For citations:


Antonova S.M., Bugrova O.V., Aleksandrova I.A., Ovchinnikova N.A. SOME BONE METABOLIC PARAMETERS IN PATIENTS WITH EARLY RHEUMATOID ARTHRITIS. Rheumatology Science and Practice. 2010;48(4):48-53. (In Russ.) https://doi.org/10.14412/1995-4484-2010-1165

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ISSN 1995-4484 (Print)
ISSN 1995-4492 (Online)