Zsófia Pethő1, Edit Kalina2, Zoltán Pap3, Katalin Hodosi4, Rebeka Falcsik4, Ádám Balogh5, Zoltán Szekanecz4, Harjit Pal Bhattoa6. 1. Kalman Laki Doctoral School of the University of Debrecen, Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary. 2. Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei Blvd. 98, Debrecen, H-4032, Hungary. 3. Kalman Laki Doctoral School of the University of Debrecen, Department of Traumatology and Hand Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary. 4. Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary. 5. Regional Osteoporosis Center, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary. 6. Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei Blvd. 98, Debrecen, H-4032, Hungary. harjit@med.unideb.hu.
Abstract
BACKGROUND: Skeletal manifestations are predominant in psoriatic arthritis (PsA). The aim of this cross-sectional, case-control study is the complex assessment of areal and volumetric bone mineral density (BMD), fracture risk, vitamin D status and bone turnover markers, and its association with disease-related variables. METHODS: Lumbar spine (L1-L4) and femoral neck (FN) areal, and distal radius (DR) volumetric BMD, 10-year probability of major and hip osteoporotic fracture as assessed by the fracture risk assessment (FRAX) tool, markers of bone metabolism and disease activity were assessed. RESULTS: Upon comparison of the disease and age- and sex-matched control groups, there was a statistically significant difference in FN areal (0.952 (0.607-1.292) g/cm2 vs. 1.016 (0.760-1.550) g/cm2; p = 0.001) and DR total volumetric (284.3 (138.9-470.3) mg/cm3 vs. 367.0 (287.0-412.0) mg/cm3; p < 0.001) BMD, 10 year probability for major osteoporotic (3.7% (0.7-32%) vs. 2.6% (0-17.5%); p = 0.003) and hip (0.4% (0-16%) vs. 0.05% (0-6.1%); p = 0.002) fracture and 25-hydroxyvitamin D status (47.5 (10-120) nmol/L vs. 64 (10-137; p < 0.001) nmol/L). As compared to areal assessment, volumetric BMD measurements identified a significantly higher number of patients with low bone mineral density (T-Score ≤ - 1.00) (34% vs. 88%, p < 0.001). Upon multiple linear regression analysis, disease activity score, as determined by DAS28 assessment, was an independent predictor of 10-year probability for major osteoporotic fracture (B (95%CI) = 1.351 (0.379-2.323); p = 0.007). CONCLUSION: In the studied PsA cohort, disease activity was an independent predictor of 10-year probability for a major osteoporotic fracture, and complemented assessment of volumetric and areal BMD assured better efficacy at identifying those with low bone mineral density.
BACKGROUND: Skeletal manifestations are predominant in psoriatic arthritis (PsA). The aim of this cross-sectional, case-control study is the complex assessment of areal and volumetric bone mineral density (BMD), fracture risk, vitamin D status and bone turnover markers, and its association with disease-related variables. METHODS: Lumbar spine (L1-L4) and femoral neck (FN) areal, and distal radius (DR) volumetric BMD, 10-year probability of major and hip osteoporotic fracture as assessed by the fracture risk assessment (FRAX) tool, markers of bone metabolism and disease activity were assessed. RESULTS: Upon comparison of the disease and age- and sex-matched control groups, there was a statistically significant difference in FN areal (0.952 (0.607-1.292) g/cm2 vs. 1.016 (0.760-1.550) g/cm2; p = 0.001) and DR total volumetric (284.3 (138.9-470.3) mg/cm3 vs. 367.0 (287.0-412.0) mg/cm3; p < 0.001) BMD, 10 year probability for major osteoporotic (3.7% (0.7-32%) vs. 2.6% (0-17.5%); p = 0.003) and hip (0.4% (0-16%) vs. 0.05% (0-6.1%); p = 0.002) fracture and 25-hydroxyvitamin D status (47.5 (10-120) nmol/L vs. 64 (10-137; p < 0.001) nmol/L). As compared to areal assessment, volumetric BMD measurements identified a significantly higher number of patients with low bone mineral density (T-Score ≤ - 1.00) (34% vs. 88%, p < 0.001). Upon multiple linear regression analysis, disease activity score, as determined by DAS28 assessment, was an independent predictor of 10-year probability for major osteoporotic fracture (B (95%CI) = 1.351 (0.379-2.323); p = 0.007). CONCLUSION: In the studied PsA cohort, disease activity was an independent predictor of 10-year probability for a major osteoporotic fracture, and complemented assessment of volumetric and areal BMD assured better efficacy at identifying those with low bone mineral density.
Entities:
Keywords:
Areal and volumetric BMD; Bone metabolism; Disease activity; FRAX; Psoriatic arthritis
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