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Pain prediction by serum biomarkers of bone turnover in people with knee osteoarthritis
Abstract
Summary Objectives To investigate serum biomarkers, tartrate resistant acid phosphatase 5b (TRAcP5b) and cathepsin K (cath-K), indicative of osteoclastic bone resorption, and their relationship to pain and pain change in knee osteoarthritis (OA).
Results Serum TRAcP5b activity, but not cath-K-immunoreactivity, was associated with density of TRAcP-positive osteoclasts in the subchondral bone of medial tibia plateaux. TRAcP-positive osteoclasts were more abundant in people with symptomatic OA compared to controls. Serum TRAcP5b activity was associated with baseline pain and pain change.
Conclusions Our observations support a role for subchondral osteoclast activity in the generation of OA pain. Serum TRAcP5b might be a clinically relevant biomarker of disease activity in OA.
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Date
2017-06
Type
Article
Subject
TRAcP5b, Subchondral bone, Biomarker, Osteoarthritis pain, Osteoclast
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Citation
Nwosu, L. N. et al. (2017) ‘Pain prediction by serum biomarkers of bone turnover in people with knee osteoarthritis: an observational study of TRAcP5b and cathepsin K in OA’, Osteoarthritis and Cartilage, 25(6), pp. 858–865.
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DOI
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Publisher
Osteoarthritis and Cartilage