The Wnt pathway regulator expression levels and their relationship to bone metabolism in thoracolumbar osteoporotic vertebral compression fracture patients

OBJECTIVETo investigate of the Wnt pathway serum regulator expression levels and their relationship with bone metabolism (BM) in thoracolumbar osteoporotic vertebral compression fracture (OVCF) patients. METHODSIn this study, 40 healthy controls (group A), 33 osteoporotic patients (group B), and 47 thoracolumbar OVCF patients (group C) were recruited as the study cohort during the same period. The Wnt pathway serum regulator levels, bone density, BM-related inflammatory cytokines, bone formation markers, and bone resorption markers were compared among the three groups, and the correlation between the Wnt pathway serum regulators and BM was analyzed. RESULTSThe β-catenin levels, the BALP, the densities at the femoral neck and lumbar spine, and the PINP, IL-10, OPG and BGP in groups B and C were lower than they were in group A, and the above indices in group C were lower than they were in group B (P < 0.05). Groups B and C showed higher CDKK-1, RANKL, TRACP-5b, β-CTX, IL-2, IL-6, MMP-2, MMP-9, Leptin, and TNF-α levels than group A, and the above indicators in group C were higher than they were in group B (P < 0.05). A Pearson's correlation analysis showed that the MMP-2, MMP-9, RANKL, β-CTX, and TRACP-5b levels were negatively correlated with β-catenin (r < 0, P < 0.05) and were positively correlated with DKK-1 (r > 0, P < 0.05). The BGP, PINP, OPG, and BALP levels were positively correlated with β-catenin (r > 0, P < 0.05) and were negatively correlated with DKK-1 (r < 0, P < 0.05). CONCLUSIONPatients with thoracolumbar OVCF have abnormal Wnt pathway serum regulator expression levels, low bone density, and abnormal BM, and the patients' Wnt/β-catenin and DKK-1 levels are closely related to BM, so they may be potential targets for the prevention and treatment of metabolic bone diseases.