scholarly journals THU0402 SERUM MARKERS OF BONE RESORPTION, FORMATION, AND MINERALIZATION DURING 8 YEARS OF TNF-Α BLOCKING THERAPY IN PATIENTS WITH ANKYLOSING SPONDYLITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 438.1-439
Author(s):  
M. Siderius ◽  
A. Spoorenberg ◽  
S. Arends
Keyword(s):  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Bone Mineralization ◽  
Serum Markers ◽  
Z Score ◽  
Tnf Α ◽  
Z Scores ◽  
Markers Of Bone Resorption

Background:Ankylosing spondylitis (AS) is a chronic inflammatory disease, characterized by both excessive bone formation and bone loss. The bone turnover marker (BTM) bone-specific alkaline phosphatase (BALP) plays a central role in bone mineralization. Our previous study demonstrated that 3 years of TNF-α blocking therapy results in a significant increase in BALP.1However, longer follow-up is needed to investigate whether BALP stays elevated during TNF-α blocking therapy and also to explore the course of other BTM, osteocalcin (OC), procollagen type 1 N-terminal peptide (PINP) and serum type 1 collagen C-telopeptide (sCTX) in AS.Objectives:To evaluate serum markers of bone resorption, formation, and mineralization during 8 years of TNF-α blocking therapy in AS patients.Methods:Included were consecutive AS outpatients from the University Medical Center Groningen (UMCG) attending the Groningen-Leeuwarden Axial SpA (GLAS) cohort and who were treated with a maximum of 2 TNF-α blockers for at least 8 years. Patients were excluded when they used bisphosphonates at baseline or during follow-up. Data for a specific visit was coded as missing when patients either had experienced a fracture or received systemic corticosteroids within 1 year of that particular visit. Clinical and laboratory measurements were performed at baseline (before start of TNF-α blocking therapy), 3 and 6 months as well as 1, 2, 4, 6 and 8 years. Markers of bone formation OC, PINP and BALP, and marker of bone resorption sCTX were measured in serum. Z-scores of BTM were calculated using matched 10-years-cohorts of a Dutch reference group to correct for the normal influence that age and gender have on bone turnover. Serum levels of 25-hydroxyvitamin D (25(OH)D3) were assessed yearly. Generalized estimating equations were used to analyze BTM Z-scores over time within patients. Simple contrast was used to compare follow-up visits to baseline. P-values <0.05 were considered statistically significant.Results:In total, 37 AS patients were analyzed; 62% were male, 86% HLA-B27+, mean age was 38.6 ± 10.4 years, median symptom duration 14 years (IQR 10-25), median CRP 13 mg/L (IQR 6-25), and 30% had low vitamin 25(OH)D3 status (<50) at baseline. 35% of patients switched to a second TNF-α inhibitor during follow-up. ASDASCRPimproved significantly during treatment, from mean 3.8 ± 0.9 at baseline to 1.9 ± 0.9 after 8 years of follow-up (P<0.001). 25(OH)D3 levels were stable at group level, median 58 nmol/L (IQR 45-70) at baseline and 60 nmol/L (IQR 50-70) after 8 years. Bone regulation marker OC Z-score was found to be significantly increased only after 3 months of TNF-α blocking therapy compared to baseline. No significant changes during follow-up were found for collagen resorption marker sCTX Z-score. Collagen formation marker PINP Z-score was significantly increased after 3 and 6 months as well as 2 years of TNF-α blocking therapy. Bone mineralization marker BALP Z-score was significantly increased at all time points up to and including 2 years and returned to baseline levels during 4 to 8 years of TNF-α blocking therapy (Figure 1).Conclusion:In this subgroup of AS patients with established and active disease responding to TNF-α blocking therapy, we observed that the bone turnover balance favored bone formation during the first years of TNF-α blocking therapy, which corresponds to previously reported improvement in bone mineral density, especially at the lumbar spine.1New finding of our study is that after 8 years of treatment, markers of bone resorption, formation, and mineralization were all comparable to baseline values.References:[1]Arends et al. Arthritis Res Ther. 2012;14(2):R98Disclosure of Interests: :Mark Siderius: None declared, Anneke Spoorenberg: None declared, Suzanne Arends Grant/research support from: Grant/research support from Pfizer

Markers of Bone Formation and Resorption Identify Subgroups of Patients with Clinical Knee Osteoarthritis Who Have Reduced Rates of Cartilage Loss

2010 ◽  
Vol 37 (6) ◽  
pp. 1252-1259 ◽  
Author(s):  
PATRICIA A. BERRY ◽  
ROSE A. MACIEWICZ ◽  
FLAVIA M. CICUTTINI ◽  
MARK D. JONES ◽  
CAROLINE J. HELLAWELL ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Bone Formation ◽  
Type I Collagen ◽  
Serum Markers ◽  
Cartilage Volume ◽  
Cartilage Loss ◽  
Type I ◽  
Bone Formation Markers ◽  
Markers Of Bone Formation ◽  
Markers Of Bone Resorption

Objective.To determine whether serum markers of bone formation and resorption, used individually or in combination, can be used to identify subgroups who lose cartilage volume at different rates over 2 years within a knee osteoarthritis (OA) population.Methods.Changes in cartilage volume over 2 years were measured in 117 subjects with knee OA using magnetic resonance imaging. We examined relationships between change in cartilage volume and baseline serum markers of bone formation [intact N-terminal propeptide of type I procollagen (PINP) and osteocalcin] and resorption [N-telopeptide of type I collagen (NTX-I), C-telopeptide of type I collagen (CTX-I), and C-telopeptide of type I collagen (ICTP).Results.The baseline markers of bone formation, PINP and osteocalcin (p = 0.02, p = 0.01, respectively), and the baseline markers of bone resorption, CTX-I and NTX-I (p = 0.02 for both), were significantly associated with reduced cartilage loss. There were no significant associations between baseline ratios of bone formation to resorption markers and cartilage loss. However, when subjects were divided into subgroups with high or low bone formation markers (based on levels of marker ≥ mean or < mean for the population, respectively), in the subgroup with high PINP there was a significant association between increasing bone resorption markers CTX-I and NTX-I and reduced cartilage loss (p = 0.02, p = 0.001, respectively). Similarly, in the subgroup with high osteocalcin, there was a significant association between increasing CTX-I and NTX-I and reduced cartilage loss (p = 0.02, p = 0.003, respectively). In contrast, in subgroups with low bone formation markers, no significant associations were obtained between markers of bone resorption and cartilage loss.Conclusion.Overall, the results suggest that higher bone remodeling (i.e., higher serum levels of bone formation and resorption) is associated with reduced cartilage loss. Considering markers of bone formation and resorption together, it is possible to identify subgroups within the OA population who have reduced rates of cartilage loss.

scholarly journals Low Dose Estrogen and Calcium Have an Additive Effect on Bone Resorption in Older Women1

1999 ◽  
Vol 84 (1) ◽  
pp. 179-183
Author(s):  
K. M. Prestwood ◽  
D. L. Thompson ◽  
A. M. Kenny ◽  
M. J. Seibel ◽  
C. C. Pilbeam ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Older Women ◽  
Low Dose ◽  
Type I Collagen ◽  
Control Group ◽  
Type I ◽  
Markers Of Bone Formation ◽  
Markers Of Bone Resorption

Previous studies have shown that treatment with estrogen or calcium decreases bone turnover in older women. The mechanisms by which estrogen and calcium exert their effects are probably different. We therefore examined the possibility of an additive or synergistic effect of combined treatment with calcium and low dose estrogen on bone turnover in older women, using biochemical markers. Thirty-one healthy women over 70 yr of age were randomized to 12 weeks of treatment with either micronized 17β-estradiol [0.5 mg/day Estrace (E2)] or 1500 mg/day elemental calcium, given as carbonate plus vitamin D (800 IU/day; Ca+D). At the end of the initial 12-week treatment period, both groups received both Ca+D and E2 for an additional 12 weeks. Eleven older women were followed for 36 weeks without any treatment and served as a control group. Serum and urine were collected at baseline, at 12 and 24 weeks on treatment, and at 12 weeks after treatment was terminated for measurement of biochemical markers of bone turnover. Markers of bone formation were bone alkaline phosphatase, osteocalcin, and type I procollagen peptide; markers of bone resorption were urinary cross-linked C-telopeptides and N-telopeptides of type I collagen, serum cross-linked N-telopeptides of type I collagen, urinary free deoxypyridinoline cross-links, and serum bone sialoprotein. Repeated measures ANOVA was used to determine changes in bone turnover measures over time by group. All markers of bone resorption decreased with initial treatment and decreased further with combination therapy (P &lt; 0.001). Markers of bone formation decreased with Ca+D treatment, but not with E2 alone; there was no additional effect of combination therapy on formation markers compared to Ca+D alone. Neither markers of formation nor resorption changed in the control group. These results suggest that there is an additive effect of low dose estrogen and calcium on bone resorption, but not on bone formation, in older women. Thus, the combination of low dose estrogen plus calcium is likely to be more effective in older women than either treatment alone.

Bone formation is increased to a greater extent than bone resorption during a cycling stage race

2010 ◽  
Vol 35 (3) ◽  
pp. 344-349 ◽  
Author(s):  
Pamela S. Hinton ◽  
Anna Rolleston ◽  
Nancy J. Rehrer ◽  
Ien J. Hellemans ◽  
Benjamin F. Miller
Keyword(s):  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Energy Intake ◽  
Type I Collagen ◽  
Serum Markers ◽  
Type I ◽  
Markers Of Bone Turnover

This study examined the effects of participation in the Tour of Southland, a 6-day bicycle race, on serum markers of bone turnover in 5 elite male cyclists. During the race, energy intake matched expenditure. Osteocalcin was increased ~300% on days 1–5; and C-terminal telopeptide of type I collagen was elevated (43%) on day 3. Participation in a cycling stage race does not appear to have deleterious effects on bone turnover.

scholarly journals Early effects of androgen deprivation on bone and mineral homeostasis in adult men: a prospective cohort study

2020 ◽  
Vol 183 (2) ◽  
pp. 181-189
Author(s):  
Rougin Khalil ◽  
Leen Antonio ◽  
Michaël R Laurent ◽  
Karel David ◽  
Na Ri Kim ◽  
...  
Keyword(s):  
Cohort Study ◽  
Calcium Phosphate ◽  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Prospective Cohort ◽  
Phosphate Homeostasis ◽  
Adult Men ◽  
Early Effects

Objective Long-term androgen deprivation therapy (ADT) negatively influences bone. The short-term effects on bone and mineral homeostasis are less known. Therefore, we aimed to investigate the early effects of ADT on calcium/phosphate homeostasis and bone turnover. Design Prospective cohort study. Methods Eugonadal adult, male sex offenders, who were referred for ADT to the endocrine outpatient clinic, received cyproterone acetate. Changes in blood markers of calcium/phosphate homeostasis and bone turnover between baseline and first follow-up visit were studied. Results Of 26 screened patients, 17 were included. The median age was 44 (range 20–75) years. The median time interval between baseline and first follow-up was 13 (6–27) weeks. Compared to baseline, an 81% decrease was observed for median total testosterone (to 3.4 nmol/L (0.4–12.2); P < 0.0001) and free testosterone (to 0.06 nmol/L (0.01–0.18); P < 0.0001). Median total estradiol decreased by 71% (to 17.6 pmol/L (4.7–35.6); P < 0.0001). Increased serum calcium (P < 0.0001) and phosphate (P = 0.0016) was observed, paralleled by decreased PTH (P = 0.0156) and 1,25-dihydroxyvitamin D3 (P = 0.0134). The stable calcium isotope ratio (δ44/42Ca) decreased (P = 0.0458), indicating net calcium loss from bone. Bone-specific alkaline phosphatase and osteocalcin decreased (P < 0.0001 and P = 0.0056, respectively), periostin tended to decrease (P = 0.0500), whereas sclerostin increased (P < 0.0001), indicating suppressed bone formation. Serum bone resorption markers (TRAP, CTX) were unaltered. Conclusions In adult men, calcium release from the skeleton occurs early following sex steroid deprivation, reflecting early bone resorption. The increase of sclerostin and reduction of bone formation markers, without changes in resorption markers, suggests a dominant negative effect on bone formation in the acute phase.

High Bone Turnover and Increased Angiogenesis Cytokines in Patients with POEMS Syndrome.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 3525-3525
Author(s):  
Evangelos Terpos ◽  
Meletios A. Dimopoulos ◽  
Ersi Voskaridou ◽  
Angela Dispenzieri
Keyword(s):  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Type I Collagen ◽  
Poems Syndrome ◽  
Bone Lesions ◽  
Type I ◽  
Tnf Α ◽  
Sclerotic Bone Lesions ◽  
Angiogenic Cytokines

Abstract POEMS syndrome is defined by the presence of peripheral neuropathy (P), monoclonal plasma cell disorder (M), organomegaly (O), endocrinopathy (E), and skin changes (S). Virtually all patients will have sclerotic bone lesions, although the mechanisms of their development have not been clarified to-date. Increased plasma level of VEGF is another characteristic of the disease. However, there is very little information for the role of other angiogenic molecules in POEMS pathogenesis. The aim of this study was to evaluate bone metabolism and angiogenic cytokines in POEMS and compare the results with multiple myeloma (MM) and osteosclerotic patients of other etiology. Seven patients with POEMS at diagnosis (6M/1F; median age: 49 years) were evaluated. A series of bone remodeling indices were measured: i) bone resorption markers [C- and N- telopeptide of type-I collagen (CTX and NTX), TRACP-5b], ii) bone formation markers [bone-alkaline phosphatase, osteocalcin (OC), and C-terminal propeptide of type-I collagen (CICP)], and iii) osteoclast regulators [soluble RANKL, osteoprotegerin (OPG), MIP-1α, and TNF-α]. Furthermore, the following angiogenic cytokines were measured in the plasma of POEMS patients: VEGF, VEGF-A, angiogenin, angiopoietin-1 (Ang-1), angiopoietin-2 (Ang-2), and bFGF. All above molecules were also measured in 25 newly diagnosed, untreated MM patients (14M/11F, median age: 64 years) and 20 healthy controls. Bone markers were also evaluated in 24 patients with HbS/beta-thalassemia (10M/14F, median age: 43 years) who presented with osteosclerosis, i.e. osteosclerotic bone lesions in plain radiography and a median T-score of lumbar spine Bone Mineral Density of +3.6 (range: +2 to +7.9). All POEMS patients had P, O, E, S, edema and thombocytosis; 6 had E and 2 Castleman’s disease. Six patients had sclerotic bone lesions, while 4 had also a lytic component in their bone lesions. POEMS patients had increased levels of sRANKL (p=0.003), OPG (p=0.008), TNF-α (p=0.001), NTX (p<0.001), CTX (p=0.001) and CICP (p=0.001) compared with controls. Interestingly, NTX levels were even higher in POEMS than in MM patients (p<0.01). NTX and CTX were elevated in POEMS compared with osteosclerotic HbS/β-thal patients (p<0.01), who had reduced bone resorption compared with controls. POEMS patients had increased levels of OC and CICP compared with MM (p=0.02 and p=0.003, respectively), and increased levels of OC compared with osteosclerotic HbS/β-thal patients (p<0.01). In terms of angiogenic cytokines, POEMS patients had increased levels of all studied cytokines compared with controls (p<0.01). All POEMS patients had at least 1.8-fold higher value of VEGF-A (the major angiogenic component of VEGF) compared with the higher value observed in controls. Furthermore, VEGF (p=0.03), VEGF-A (p<0.001), angiogenin (p<0.001), and bFGF (p=0.01) were higher in POEMS than in MM. The ratio of Ang-1/Ang-2 was very low in POEMS compared with both controls and MM. These results suggest that POEMS patients have increased bone turnover in contrast to MM patients who have reduced bone formation and osteosclerotic HbS/β-thal patients who have diminished bone resorption. Furthermore the imbalance of Ang-1/Ang-2 pathway and the increased levels of angiogenic cytokines, even compared with MM, may indicate possible targets for the development of novel agents against POEMS.

scholarly journals Bone mineral density and explanatory factors in children and adults with juvenile dermatomyositis at long term follow-up; a cross sectional study

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Henriette Schermacher Marstein ◽  
Kristin Godang ◽  
Berit Flatø ◽  
Ivar Sjaastad ◽  
Jens Bollerslev ◽  
...  
Keyword(s):  
Bone Turnover ◽  
Inflammatory Markers ◽  
Juvenile Dermatomyositis ◽  
Inflammatory Myopathy ◽  
Disease Onset ◽  
Whole Body ◽  
Mineral Density ◽  
Z Scores

Abstract Background Juvenile dermatomyositis (JDM) is the most common idiopathic inflammatory myopathy in children and adolescents. Both the disease and its treatment with glucocorticoids may negatively impact bone formation. In this study we compare BMD in patients (children/adolescence and adults) with long-standing JDM with matched controls; and in patients, explore how general/disease characteristics and bone turnover markers are associated with BMD. Methods JDM patients (n = 59) were examined median 16.8y (range 6.6–27.0y) after disease onset and compared with 59 age/sex-matched controls. Dual-energy X-ray absorptiometry (DXA) was used to measure BMD of the whole body and lumbar spine (spine) in all participants, and of ultra-distal radius, forearm and total hip in participants ≥20y only. Markers of bone turnover were analysed, and associations with outcomes explored. Results Reduced BMD Z-scores (<−1SD) were found in 19 and 29% of patients and 7 and 9% of controls in whole body and spine, respectively (p-values < 0.05). BMD and BMD Z-scores for whole body and spine were lower in all patients and for < 20y compared with their respective controls. In participants ≥20y, only BMD and BMD Z-score of forearm were lower in the patients versus controls. In patients, BMD Z-scores for whole body and/or spine were found to correlate negatively with prednisolone use at follow-up (yes/no) (age < 20y), inflammatory markers (age ≥ 20y) and levels of interferon gamma-induced protein 10 (IP-10) (both age groups). In all patients, prednisolone use at follow-up (yes/no) and age ≥ 20y were independent correlates of lower BMD Z-scores for whole body and spine, respectively. Conclusion In long-term JDM, children have more impairment of BMD than adults in spine and whole-body. Associations with BMD were found for both prednisolone and inflammatory markers, and a novel association was discovered with the biomarker of JDM activity, IP-10.

The changes in bone turnover markers of female systemic lupus erythematousus patients without glucocorticoid

Lupus ◽  
2021 ◽  
Vol 30 (6) ◽  
pp. 965-971
Author(s):  
Wang Tianle ◽  
Zhang Yingying ◽  
Hong Baojian ◽  
Gu Juanfang ◽  
Wang Hongzhi ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Bone Metabolism ◽  
Bone Turnover Markers ◽  
Control Group ◽  
Bone Resorption Marker ◽  
Amino Terminal ◽  
Normal People ◽  
Turnover Markers

Objectives SLE is a chronic autoimmune disease, which can affect the level of bone metabolism and increase the risk of osteoporosis and fracture. The purpose of this research is to study the effect of SLE on bone turnover markers without the influence of glucocorticoids. Methods A total of 865 female subjects were recruited from Zhejiang Provincial People’s Hospital and the First Hospital of Jiaxing, including 391 SLE patients without the influence of glucocorticoids and 474 non-SLE people. We detected Bone turnover markers including amino-terminal propeptide of type 1 procollagen (P1NP), C-terminal turnover of β - I collagen (β-CTX), N-terminal midfragment of osteocalcin (NMID) and 25(OH)D, and analyzed the difference in Bone turnover markers between the SLE group and the control group, as well as the influence of age and season on bone metabolism in female SLE patients. Results In the SLE group, the average age was 43.93±13.95 years old. In the control group, the average age was 44.84±11.42 years old. There was no difference between the two groups (t = 1.03, P = 0.30). P1NP, NMID and 25(OH)D in the SLE group were significantly lower than those in the control group (Z = 8.44, p < 0.001; Z = 14.41, p < 0.001; Z = 2.19, p = 0.029), and β-CTX in the SLE group was significantly higher than that in the control group (Z = 2.61, p = 0.009). In addition, the levers of β-CTX, NMID, P1NP and 25(OH)D in older SLE female patients were statistically significantly higher than those in younger (ρ = 0.104, p = 0.041; ρ = 0.223, p < 0.001; ρ = 0.105, p = 0.038; ρ = 0.289, p < 0.001). Moreover, β-CTX reached a high value in summer and PINP reached a low value in winter. Conclusion The bone formation markers of female SLE patients without glucocorticoid were lower than those of normal people and the bone resorption marker was higher than that of normal people. The 25 (OH) D of female SLE patients without glucocorticoid was lower than that of normal people. The risk of osteoporosis and fracture may be higher in elderly women with SLE. The bone resorption level of female SLE patients is high in summer and the bone formation level is low in winter.

scholarly journals POS1002 BASELINE CALPROTECTIN AND VISFATIN LEVELS PREDICT RADIOGRAPHIC SPINAL PROGRESSION AFTER 2 YEARS IN ANKYLOSING SPONDYLITIS PATIENTS ON TNF INHIBITOR THERAPY

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 769.2-770
Author(s):  
J. Rademacher ◽  
M. Siderius ◽  
L. Gellert ◽  
F. Wink ◽  
M. Verba ◽  
...  
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Ankylosing Spondylitis ◽  
Bone Formation ◽  
Bone Turnover ◽  
Radiographic Progression ◽  
Serum Levels ◽  
Tnf Inhibitor ◽  
Research Support

Background:Radiographic spinal progression determinates functional status and mobility in ankylosing spondylitis (AS)1.Objectives:To analyse whether biomarker of inflammation, bone turnover and adipokines at baseline or their change after 3 months or 2 years can predict spinal radiographic progression after 2 years in AS patients treated with TNF-α inhibitors (TNFi).Methods:Consecutive AS patients from the Groningen Leeuwarden Axial Spondyloarthritis (GLAS) cohort2 starting TNFi between 2004 and 2012 were included. The following serum biomarkers were measured at baseline, 3 months and 2 years of follow-up with ELISA: - Markers of inflammation: calprotectin, matrix metalloproteinase-3 (MMP-3), vascular endothelial growth factor (VEGF) - Markers of bone turnover: bone-specific alkaline phosphatase (BALP), serum C-terminal telopeptide (sCTX), osteocalcin (OC), osteoprotegerin (OPG), procollagen typ I and II N-terminal propeptide (PINP; PIINP), sclerostin. - Adipokines: high molecular weight (HMW) adiponectin, leptin, visfatinTwo independent readers assessed spinal radiographs at baseline and 2 years of follow-up according to the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS). Radiographic spinal progression was defined as mSASSS change ≥2 units or the formation of ≥1 new syndesmophyte over 2 years. Logistic regression was performed to examine the association between biomarker values at baseline, their change after 3 months and 2 years and radiographic spinal progression. Multivariable models for each biomarker were adjusted for mSASSS or syndesmophytes at baseline, elevated CRP (≥5mg/l), smoking status, male gender, symptom duration, BMI, and baseline biomarker level (the latter only in models with biomarker change).Results:Of the 137 included AS patients, 72% were male, 79% HLAB27+; mean age at baseline was 42 years (SD 10.8), ASDAScrp 3.8 (0.8) and mSASSS 10.6 (16.1). After 2 years of follow-up, 33% showed mSASSS change ≥2 units and 24% had developed ≥1 new syndesmophyte. Serum levels of biomarkers of inflammation and bone formation showed significant changes under TNFi therapy, whereas adipokine levels were not altered from baseline (Figure 1).Univariable logistic regression revealed a significant association of baseline visfatin (odds ratio OR [95% confidence interval] 1.106 [1.007-1.215]) and sclerostin serum levels (OR 1.006 [1.001-1.011]) with mSASSS progression after 2 years. Baseline sclerostin levels were also associated with syndesmophyte progression (OR 1.007 [1.001-1.013]). In multivariable logistic analysis, only baseline visfatin level remained significantly associated (OR 1.465 [1.137-1.889]) with mSASSS progression. Furthermore, baseline calprotectin showed a positive association with both, mSASSS (OR 1.195 [1.055-1.355]) and syndesmophyte progression (OR 1.107 [1.001-1.225]) when adjusting for known risk factors for radiographic progression.Univariable logistic regression showed that change of sclerostin after 3 months was associated with syndesmophytes progression (OR 1.007 [1.000-1.015), change of PINP level after 2 years was associated with mSASSS progression (OR 1.027 [1.003-1.052]) and change of visfatin after 2 years was associated with both measures of radiographic progression – mSASSS (OR 1.108 [1.004-1.224]) and syndesmophyte formation (OR 1.115; [1.002-1.24]). However, those associations were lost in multivariable analysis.Conclusion:Independent of known risk factors, baseline calprotectin and visfatin levels were associated with radiographic spinal progression after 2 years of TNFi. Although biomarkers of inflammation and bone formation showed significant changes under TNFi therapy, these changes were not significantly related to radiographic spinal progression in our cohort of AS patients.References:[1]Poddubnyy et al 2018[2]Maas et al 2019Acknowledgements:Dr. Judith Rademacher is participant in the BIH-Charité Clinician Scientist Program funded by the Charité –Universitätsmedizin Berlin and the Berlin Institute of Health.Disclosure of Interests:Judith Rademacher: None declared, Mark Siderius: None declared, Laura Gellert: None declared, Freke Wink Consultant of: AbbVie, Maryna Verba: None declared, Fiona Maas: None declared, Lorraine M Tietz: None declared, Denis Poddubnyy: None declared, Anneke Spoorenberg Consultant of: Abbvie, Pfizer, MSD, UCB, Lilly and Novartis, Grant/research support from: Abbvie, Pfizer, UCB, Novartis, Suzanne Arends Grant/research support from: Pfizer.

Physical activity increases bone formation and decreases bone resorption as assessed by biochemical markers of bone turnover

1996 ◽  
Vol 6 (S1) ◽  
pp. 250-250
Author(s):  
HW Woitge ◽  
M Müller ◽  
P Bärtsch ◽  
B Friedmann ◽  
MJ Seibel ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Resorption ◽  
Bone Formation ◽  
Bone Turnover ◽  
Biochemical Markers ◽  
Markers Of Bone Turnover
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