scholarly journals Anti-Osteoporotic Activity of Pueraria lobata Fermented with Lactobacillus paracasei JS1 by Regulation of Osteoblast Differentiation and Protection against Bone Loss in Ovariectomized Mice

Fermentation ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 186
Author(s):  
Seon Yu Kim ◽  
Hee-Ju Lee ◽  
Taehyun Kim ◽  
Yeong-Geun Lee ◽  
Jeong Eun Kwon ◽  
...  
Keyword(s):  
Bone Loss ◽  
Bone Mineral ◽  
Lactobacillus Paracasei ◽  
Calcium Deposition ◽  
Pueraria Lobata ◽  
Mineral Density ◽  
Vitro Assay ◽  
Ovariectomized Mice ◽  
Mg63 Cells

Osteoporosis is the most common bone disease associated with low bone mineral density. It is the process of bone loss and is most commonly caused by decreased estrogen production in women, particularly after menopause. Pueraria lobata, which contains various metabolites, especially isoflavone, is widely known as regulator for bone mineral contents. In this study, the effects of the P. lobata extract (PE) with or without fermentation with Lactobacillus paracasei JS1 (FPE) on osteoporosis were investigated in vitro and in vivo. The effects of PE and FPE on human osteoblastic MG63 cells, RAW 264.7 cells, and ovariectomized (OVX)-induced model mice were analyzed at various ratios. We found that FPE increased calcium deposition and inhibited bone resorption by in vitro assay. Furthermore, treatment with PE and FPE has significantly restored destroyed trabecular bone in the OVX-induced bone loss mouse model. Overall, FPE demonstrated bioactivity to prevent bone loss by decreasing bone turnover.

scholarly journals Effect of Allium fistulosum Extracts on the Stimulation of Longitudinal Bone Growth in Animal Modeling Diet-Induced Calcium and Vitamin D Deficiencies

2021 ◽  
Vol 11 (17) ◽  
pp. 7786
Author(s):  
Jin Ah Ryuk ◽  
Hye Jin Kim ◽  
Joo Tae Hwang ◽  
Byoung Seob Ko
Keyword(s):  
Vitamin D ◽  
Growth Plate ◽  
Bone Mineral ◽  
Bone Growth ◽  
Allium Fistulosum ◽  
Mineral Density ◽  
Mg63 Cells ◽  
Alkaline Phosphate

Allium fistulosum is a perennial plant species grown worldwide belonging to the family Liliaceae. In Korean medicine, it is referred to as Chongbaek (CB), and it is prescribed for symptoms associated with the common cold due to its antipyretic properties. This study examined the effects of aqueous (CBW) and 30% ethanol (CBE) extracts on bone growth using a calcium- and vitamin D-deficient animal model. In an in vitro experiment, the alkaline phosphate activities of the extracts were examined using MC3T3-E1 and MG63 cells, and both the aqueous and ethanolic extracts had significant alkaline phosphate activities. In vivo, a serum analysis indicated that the CB extracts promoted bone growth based on the osteogenic markers ALP, calcium, osteocalcin, and collagen type 1 and increased the bone mineral content (BMC), bone mineral density (BMD), and growth plate length. Overall, our results indicate that both CBW and CBE of A. fistulosum can be utilized to facilitate bone growth and increase BMD in children and adolescents by lengthening the growth plate without adverse side effects, such as metabolic disorders or the release of obesity-inducing hormones.

scholarly journals The Non-Erythropoietic EPO Analogue Cibinetide Inhibits Osteoclastogenesis In Vitro and Increases Bone Mineral Density in Mice

2021 ◽  
Vol 23 (1) ◽  
pp. 55
Author(s):  
Zamzam Awida ◽  
Almog Bachar ◽  
Hussam Saed ◽  
Anton Gorodov ◽  
Nathalie Ben-Califa ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Loss ◽  
Bone Mineral ◽  
Molecular Mechanisms ◽  
Mineral Density ◽  
Female Mice ◽  
Epo Receptor

The two erythropoietin (EPO) receptor forms mediate different cellular responses to erythropoietin. While hematopoiesis is mediated via the homodimeric EPO receptor (EPOR), tissue protection is conferred via a heteromer composed of EPOR and CD131. In the skeletal system, EPO stimulates osteoclast precursors and induces bone loss. However, the underlying molecular mechanisms are still elusive. Here, we evaluated the role of the heteromeric complex in bone metabolism in vivo and in vitro by using Cibinetide (CIB), a non-erythropoietic EPO analogue that exclusively binds the heteromeric receptor. CIB is administered either alone or in combination with EPO. One month of CIB treatment significantly increased the cortical (~5.8%) and trabecular (~5.2%) bone mineral density in C57BL/6J WT female mice. Similarly, administration of CIB for five consecutive days to female mice that concurrently received EPO on days one and four, reduced the number of osteoclast progenitors, defined by flow cytometry as Lin−CD11b−Ly6Chi CD115+, by 42.8% compared to treatment with EPO alone. In addition, CIB alone or in combination with EPO inhibited osteoclastogenesis in vitro. Our findings introduce CIB either as a stand-alone treatment, or in combination with EPO, as an appealing candidate for the treatment of the bone loss that accompanies EPO treatment.

Identification and Functional Characterization of Metabolites for Bone Mass in Peri-/Post-menopausal Chinese Women

2021 ◽  
Author(s):  
Rui Gong ◽  
Hong-Mei Xiao ◽  
Yin-Hua Zhang ◽  
Qi Zhao ◽  
Kuan-Jui Su ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Bone Loss ◽  
Osteoclast Differentiation ◽  
Dodecanoic Acid ◽  
Mineral Density ◽  
Ovariectomized Mice ◽  
Post Menopausal ◽  
Functional Mechanisms

Abstract Context Although metabolic profiles appear to play an important role in menopausal bone loss, the functional mechanisms by which metabolites influence bone mineral density (BMD) during menopause are largely unknown. Objective We aimed to systematically identify metabolites associated with BMD variation and their potential functional mechanisms in peri-/post-menopausal women. Design and Methods We performed serum metabolomic profiling and whole-genome sequencing for 517 perimenopausal (16%) and early postmenopausal (84%) women aged 41 to 64 years in this cross-sectional study. Partial least squares (PLS) regression and general linear regression analysis were applied to identify BMD-associated metabolites, and weighted gene co-expression network analysis was performed to construct co-functional metabolite modules. Furthermore, we performed Mendelian randomization analysis to identify causal relationships between BMD-associated metabolites and BMD variation. Finally, we explored the effects of a novel prominent BMD-associated metabolite on bone metabolism through both in vivo/in vitro experiments. Results Twenty metabolites and a co-functional metabolite module (consisting of fatty acids) were significantly associated with BMD variation. We found dodecanoic acid (DA), within the identified module, causally decreased total hip BMD. Subsequently, the in vivo experiments might support that dietary supplementation with DA could promote bone loss, as well as increase the osteoblast and osteoclast numbers in normal/ovariectomized mice. DA treatment differentially promoted osteoblast and osteoclast differentiation, especially for osteoclast differentiation at higher concentrations in vitro (e.g.,10, 100μM). Conclusions This study sheds light on metabolomic profiles associated with postmenopausal osteoporosis risk, highlighting the potential importance of fatty acids, as exemplified by DA, in regulating BMD.

scholarly journals Circaea Mollis Siebold & Zucc. Prevents Bone Loss in a Mouse Postmenopausal Osteoporosis Model by Promoting of Osteoblast Differentiation (P06-130-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Gyhye Yoo ◽  
Ji-Hye Park ◽  
Yang-Ju Son ◽  
Chang Ho Lee ◽  
Chu Won Nho
Keyword(s):  
Breast Cancer ◽  
Side Effects ◽  
Bone Loss ◽  
Postmenopausal Osteoporosis ◽  
Osteoclast Differentiation ◽  
Mineral Density ◽  
Promising Alternative ◽  
Ovariectomized Mice

Abstract Objectives Postmenopausal osteoporosis, a condition of low bone density consequent to decreased estrogen levels after menopause in women, is generally treated with hormone replacement therapy. However, long-term hormone use may cause critical side effects including breast cancer. Alternatively, phytoestrogens, which have similar structures to steroid hormones, are reported to cure postmenopausal symptoms with fewer side effects. Here, we investigated the effects of EtOH extract of Circaea mollis Siebold & Zucc. (EECM), a traditional herbal medicine in Asia that exhibits anti-arthritic activities, on postmenopausal osteoporosis. Methods In vitro model: MCF7 breast cancer cells and MC3T3-E1 pre-osteoblast cells were utilized to estimate estrogenic and osteogenic activity. Osteoblastic markers were measured by western blot and real-time PCR. In vivo model: Female mature C57BL/6 mice were ovariectomized and oral administrated with 10 mg/kg and 40 mg/kg of EECM respectively. Results EECM increased alkaline phosphatase activity and osteoblastic markers including osteoprotegerin at day 6 during mouse preosteoblast differentiation. EECM inhibited osteoclast differentiation and bone resorption in an osteoblast-osteoclast primary co-culture system via osteoprotegerin-mediated RANK/RANKL signaling. In ovariectomized mice, EECM prevented bone mineral density decrease and recovered osteoblastic molecules. Conclusions EECM enhanced the differentiation of osteoblasts via osteogenic markers and modulated RANK/RANKL signaling via an elevation of OPG from osteoblasts in vitro and in vivo. Therefore, EECM may be effective in preventing bone loss and offers a promising alternative for the nutritional management of postmenopausal osteoporosis. Funding Sources This work was supported by the Center Project for the Korea-Mongolia Science and Technology Cooperation (2U06170). Supporting Tables, Images and/or Graphs

Oral bovine lactoferrin improves bone status of ovariectomized mice

2009 ◽  
Vol 296 (6) ◽  
pp. E1281-E1288 ◽  
Author(s):  
Anne Blais ◽  
Arnaud Malet ◽  
Takashi Mikogami ◽  
Christine Martin-Rouas ◽  
Daniel Tomé
Keyword(s):  
Bone Mineral Density ◽  
Bone Loss ◽  
Bone Mineral ◽  
Milk Protein ◽  
Bone Cells ◽  
Bovine Lactoferrin ◽  
Dependent Manner ◽  
Mineral Density ◽  
Ovariectomized Mice ◽  
Total Milk

The aim of the present study was to evaluate the effect of dietary lactoferrin on bone metabolism in vivo using a postmenopausal animal model. We investigated whether bovine lactoferrin (bLF) ingestion could prevent bone loss in ovariectomized mice. Twelve-week-old female C3H mice either ovariectomized or sham operated were fed for 27 wk with the control diet (AIN-93M with 140 g of total milk protein as a protein source per kg of diet). Four groups of ovariectomized mice received diets including different concentrations of bLF (1, 5, 10, or 20 g of total milk protein were replaced by bLF). Ovariectomy induced a decreased uterine weight and a smaller gain of bone mineral density. Immunoreactive bLF was detected in the peripheral blood, and its concentration was related to the amount of bLF ingestion. bLF supplementation to the diet improved bone mineral density (BMD) and femoral failure load in a dose-dependent manner. We confirmed the direct effects of bLF in vitro using established and primary cultures of murine bone cells. Addition of bLF to the culture medium at a concentration of between 1 and 1,000 μg/ml stimulated both cell growth and differentiation of osteoblastic MC3T3 cells while inhibiting the growth of preosteoclastic RAW 267.4 cells. In primary culture of mixed bone cells, an enhanced osteoblast differentiation was associated with an inhibition of osteoclast differentiation at lower bLF concentrations (1–10 μg/ml). In conclusion, these findings suggest that dietary lactoferrin supplementation can have a beneficial effect on postmenopausal bone loss by modulating bone formation and resorption.

scholarly journals Transcriptome analysis of osteoblasts in an ovariectomized mouse model in response to physical exercise

2018 ◽  
Vol 7 (11) ◽  
pp. 601-608 ◽  
Author(s):  
W-B. Hsu ◽  
W-H. Hsu ◽  
J-S. Hung ◽  
W-J. Shen ◽  
R. W-W. Hsu
Keyword(s):  
Physical Exercise ◽  
Mouse Model ◽  
Transcriptome Analysis ◽  
Mineral Density ◽  
Gene Expressions ◽  
Vitro Assay ◽  
Ovariectomized Mouse ◽  
Ovariectomized Mice ◽  
Positive Effect

ObjectivesOsteoporosis is a metabolic disease resulting in progressive loss of bone mass as measured by bone mineral density (BMD). Physical exercise has a positive effect on increasing or maintaining BMD in postmenopausal women. The contribution of exercise to the regulation of osteogenesis in osteoblasts remains unclear. We therefore investigated the effect of exercise on osteoblasts in ovariectomized mice.MethodsWe compared the activity of differentially expressed genes of osteoblasts in ovariectomized mice that undertook exercise (OVX+T) with those that did not (OVX), using microarray and bioinformatics.ResultsMany inflammatory pathways were significantly downregulated in the osteoblasts after exercise. Meanwhile, IBSP and SLc13A5 gene expressions were upregulated in the OVX+T group. Furthermore, in in vitro assay, IBSP and SLc13A5 mRNAs were also upregulated during the osteogenic differentiation of MC3T3-E1 and 7F2 cells.ConclusionThese findings suggest that exercise may not only reduce the inflammatory environment in ovariectomized mice, indirectly suppressing the overactivated osteoclasts, but may also directly activate osteogenesis-related genes in osteoblasts. Exercise may thus prevent the bone loss caused by oestrogen deficiency through mediating the imbalance between the bone resorptive activity of osteoclasts and the bone formation activity of osteoblasts. Cite this article: W-B. Hsu, W-H. Hsu, J-S. Hung, W-J. Shen, R. W-W. Hsu. Transcriptome analysis of osteoblasts in an ovariectomized mouse model in response to physical exercise. Bone Joint Res 2018;7:601–608. DOI: 10.1302/2046-3758.711.BJR-2018-0075.R2.

Melatonin inhibits osteoclastogenesis and bone loss in ovariectomized mice by regulating PRMT1-mediated signaling

Endocrinology ◽  
2021 ◽  
Author(s):  
Joo-Hee Choi ◽  
Ah-Ra Jang ◽  
Min-Jung Park ◽  
Dong-il Kim ◽  
Jong-Hwan Park
Keyword(s):  
Bone Loss ◽  
Osteoclast Differentiation ◽  
Tumor Necrosis Factor Receptor ◽  
Estrogen Deficiency ◽  
Melatonin Receptors ◽  
Mineral Density ◽  
Melatonin Treatment ◽  
Ovariectomized Mice

Abstract Melatonin, a pineal gland hormone, has been suggested to treat postmenopausal osteoporosis due to its inhibitory effect on osteoclast differentiation. We previously reported that protein arginine methyltransferase 1 (PRMT1) was an important mediator of receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis. However, the relationship between melatonin and PRMT1 in osteoclast differentiation and estrogen deficiency-induced osteoporosis is unclear. In this study, we investigated the inhibitory mechanisms of melatonin in vitro and in vivo by focusing on PRMT1. Melatonin treatment effectively blocked RANKL-induced osteoclastogenesis by inhibiting PRMT1 and asymmetric dimethylarginine (ADMA) expression. RANKL-induced tumor necrosis factor receptor-associated factor 6 (TRAF6) and the phosphorylation of JNK were also suppressed by melatonin, and TRAF6 siRNA attenuated RANKL-induced p-JNK and PRMT1 production. Melatonin inhibited the transcriptional activity of NF-κB by interfering with the binding of PRMT1 and NF-κB subunit p65 in RANKL-treated BMDMs. Our results also revealed that melatonin inhibits RANKL-induced PRMT1 expression through receptors-independent pathway. Thus, the anti-osteoclastogenic effect of melatonin was mediated by a cascade of inhibition of RANKL-induced TRAF6, JNK, PRMT1, and NF-κB signaling in melatonin receptors-independent pathway. In vivo, ovariectomy caused significant decreases in bone mineral density, but melatonin treatment alleviated the ovariectomized (OVX)-induced bone loss by inhibiting bone resorption. Furthermore, the expression PRMT1 and TRAP mRNA was upregulated in OVX-femurs, but effectively suppressed by melatonin injection. These findings suggest that melatonin inhibited osteoclast differentiation and estrogen deficiency-induced osteoporosis by suppressing RANKL-induced TRAF6, JNK, PRMT1, and NF-κB signaling cascades in melatonin receptors-independent pathway.

Impaired Estrogen Sensitivity in Bone by Inhibiting Both Estrogen Receptor a and b Pathways*

2020 ◽  
Author(s):  
Lungwani Muungo
Keyword(s):  
Bone Mineral Density ◽  
Estrogen Receptor ◽  
Bone Loss ◽  
Bone Turnover ◽  
Bone Mineral ◽  
Female Rats ◽  
Wild Type ◽  
Mineral Density ◽  
Transgenic Rats ◽  
Estrogen Sensitivity

Although it is well established that estrogen deficiencycauses osteoporosis among the postmenopausalwomen, the involvement of estrogen receptor (ER) in itspathogenesis still remains uncertain. In the presentstudy, we have generated rats harboring a dominantnegative ERa, which inhibits the actions of not only ERabut also recently identified ERb. Contrary to our expectation,the bone mineral density (BMD) of the resultingtransgenic female rats was maintained at the same levelwith that of the wild-type littermates when sham-operated.In addition, ovariectomy-induced bone loss wasobserved almost equally in both groups. Strikingly, however,the BMD of the transgenic female rats, after ovariectomized,remained decreased even if 17b-estradiol(E2) was administrated, whereas, in contrast, the decreaseof littermate BMD was completely prevented byE2. Moreover, bone histomorphometrical analysis ofovariectomized transgenic rats revealed that the higherrates of bone turnover still remained after treatmentwith E2. These results demonstrate that the preventionfrom the ovariectomy-induced bone loss by estrogen ismediated by ER pathways and that the maintenanceof BMD before ovariectomy might be compensatedby other mechanisms distinct from ERa and ERbpathways.

scholarly journals P129 Predictors of low bone mineral density in rheumatoid arthritis

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_1) ◽  
Author(s):  
Malika A Swar ◽  
Marwan Bukhari
Keyword(s):  
Rheumatoid Arthritis ◽  
Risk Factors ◽  
Bone Mineral Density ◽  
Family History ◽  
Bone Loss ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Fragility Fracture ◽  
Mineral Density ◽  
History Of

Abstract Background/Aims  Osteoporosis (OP) is an extra-articular manifestation of rheumatoid arthritis (RA) that leads to increased fracture susceptibility due to a variety of reasons including immobility and cytokine driven bone loss. Bone loss in other populations has well documented risk factors. It is unknown whether bone loss in RA predominantly affects the femoral neck or the spine. This study aimed to identify independent predictors of low bone mineral density (BMD) in patients RA at the lumbar spine and the femoral neck. Methods  This was a retrospective observational cohort study using patients with Rheumatoid arthritis attending for a regional dual X-ray absorptiometry (DEXA) scan at the Royal Lancaster Infirmary between 2004 and 2014. BMD in L1-L4 in the spine and in the femoral neck were recorded. The risk factors investigated were steroid use, family history of osteoporosis, smoking, alcohol abuse, BMI, gender, previous fragility fracture, number of FRAX(tm) risk factors and age. Univariate and Multivariate regression analysis models were fitted to explore bone loss at these sites using BMD in g/cm2 as a dependant variable. . Results  1,527 patients were included in the analysis, 1,207 (79%) were female. Mean age was 64.34 years (SD11.6). mean BMI was 27.32kg/cm2 (SD 5.570) 858 (56.2%) had some steroid exposure . 169(11.1%) had family history of osteoporosis. fragility fracture history found in 406 (26.6%). 621 (40.7%) were current or ex smokers . There was a median of 3 OP risk factors (IQR 1,3) The performance of the models is shown in table one below. Different risk factors appeared to influence the BMD at different sites and the cumulative risk factors influenced BMD in the spine. None of the traditional risk factors predicted poor bone loss well in this cohort. P129 Table 1:result of the regression modelsCharacteristicB femoral neck95% CIpB spine95%CIpAge at scan-0.004-0.005,-0.003<0.01-0.0005-0.002,0.00050.292Sex-0.094-0.113,-0.075<0.01-0.101-0.129,-0.072<0.01BMI (mg/m2)0.0080.008,0.0101<0.010.01130.019,0.013<0.01Fragility fracture-0.024-0.055,0.0060.12-0.0138-0.060,0.0320.559Smoking0.007-0.022,0.0350.650.0286-0.015,0.0720.20Alcohol0.011-0.033,0.0 5560.620.0544-0.013,0.1120.11Family history of OP0.012-0.021,0.0450.470.0158-0.034,0.0650.53Number of risk factors-0.015-0.039,0.0080.21-0.039-0.075,-0.0030.03steroids0.004-0.023,0.0320.030.027-0.015,0.0690.21 Conclusion  This study has shown that predictors of low BMD in the spine and hip are different and less influential than expected in this cohort with RA . As the FRAX(tm) tool only uses the femoral neck, this might underestimate the fracture risk in this population. Further work looking at individual areas is ongoing. Disclosure  M.A. Swar: None. M. Bukhari: None.

scholarly journals SAT0477 A TWO-YEAR LONGITUDINAL STUDY COMPLETION, LONGITUNEAL STUDY, THE DIFFERENCE IN BONE LOSS IN PATIENTS WITH EROSIVE AND NON-EROSIVE HAND OSTEOARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1195.2-1195
Author(s):  
K. Pavelka ◽  
L. Šenolt ◽  
O. Sleglova ◽  
J. Baloun ◽  
O. Růžičková
Keyword(s):  
Bone Mineral Density ◽  
Longitudinal Study ◽  
Lumbar Spine ◽  
Bone Loss ◽  
Bone Mineral ◽  
Hand Osteoarthritis ◽  
Mineral Density ◽  
Erosive Disease ◽  
Femur Neck ◽  
American College Of Rheumatology

Background:Hand osteoarthritis (OA) and its more severe subset erosive hand OA are common causes of pain and morbidity. Some metabolic factors were suggested to be implicated in erosive disease. Few studies investigated differences in systemic bone loss between erosive and non-erosive hand OA.Objectives:To compare the change of bone mineral density (BMD) between patients with erosive and non-erosive hand OA in a two-year longitudinal study.Methods:Consecutive patients with symptomatic HOA fulfilling the American College of Rheumatology (ACR) criteria were included in this study. Erosive hand OA was defined by at least one erosive interphalangeal joint. All patients underwent clinical assessments of joint swelling and radiographs of both hands. DEXA examination of lumbar spine, total femur and femur neck was performed at the baseline and after two years.Results:Altogether, 141patients (15 male) with symptomatic nodal HOA were included in this study and followed between April 2012 and January 2019. Out of these patients, 80 had erosive disease after two years. The disease duration (p<0.01) was significantly higher in patients with erosive compared with non-erosive disease at baseline.Osteoporosis (T-score <-2.5 SD) was diagnosed in 12.5% (9/72) of patients with erosive hand OA and in 8.06% (5/57) of patients with non-erosive hand OA at baseline. BMD was significantly lowered in patients with erosive compared with non-erosive disease at baseline (lumbar spine: 1.05g/cm2 vs. 1.13 g/cm2, p<0.05, total femur: 0.90 g/cm2 vs. 0.97 g/cm2, p<0.01 and femur neck: 0.86 g/cm2 vs. 0.91, p<0.05). T-scores of lumbar spine (-0.96 vs. -0.41 SD, p<0.05), total femur (-0.69 vs. -0.33 SD, p<0.05) and femur neck (-1.14 vs. -0.88 SD, p<0.05) were also significantly lowered in patients with erosive compared with non-erosive disease.Two years, the BMD remained also significantly lowered in patients with erosive compared with non-erosive disease (lumbar spine: 1.05g/cm2 vs. 1.14 g/cm2, p<0.05, total femur: 0.92 g/cm2 vs. 0.97 g/cm2, p<0.05 and femur neck: 0.86 g/cm2 vs. 0.91, p<0.05), which was in agreement with the finding for T-scores of lumbar spine (-1.05 vs. -0.39 SD, p<0.05), total femur (-0.74 vs. -0.34 SD, p<0.01) and femur neck (-1.07 vs. -0.72 SD, p<0.01).Conclusion:These results suggest that patients with erosive hand OA are at higher risk for the development of general bone loss. Over two years patients with erosive disease had significant lower bone mineral density at all measured sites.References:[1]This work was supported by the project AZV no. 18-00542 and MHCR No. 023728.Acknowledgments:Project AZV no. 18-00542 and MHCR No. 023728Disclosure of Interests:Karel Pavelka Consultant of: Abbvie, MSD, BMS, Egis, Roche, UCB, Medac, Pfizer, Biogen, Speakers bureau: Abbvie, MSD, BMS, Egis, Roche, UCB, Medac, Pfizer, Biogen, Ladislav Šenolt: None declared, Olga Sleglova: None declared, Jiří Baloun: None declared, Olga Růžičková: None declared

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