scholarly journals Sclerostin Levels and Changes in Bone Metabolism After Bariatric Surgery

2015 ◽  
Vol 100 (3) ◽  
pp. 891-901 ◽  
Author(s):  
Christian Muschitz ◽  
Roland Kocijan ◽  
Christina Marterer ◽  
Arastoo Rahbar Nia ◽  
Gabriela Katharina Muschitz ◽  
...  
Keyword(s):  
Bone Metabolism ◽  
Premenopausal Women ◽  
Serum Levels ◽  
Areal Bone Mineral Density ◽  
Mineral Density ◽  
Entire Study ◽  
Turnover Markers ◽  
Total Body ◽  
Dickkopf 1

Context: The role of sclerostin as a key regulator of bone formation remains unknown after Roux-en-Y gastric bypass (RYGB) or laparoscopic sleeve gastrectomy (SG). Objectives: The study objectives were evaluation of sclerostin and Dickkopf-1 (DKK-1) serum levels after surgery and correlations with bone turnover markers (P1NP, CTX), parathyroid hormone (iPTH) and areal bone mineral density (BMD), changes at total body, lumbar spine and total hip. Design and Setting: This was a prospective observational single-center two-arm study in premenopausal women with acute adipositas over 24 months. Participants: Participants were 52 premenopausal women (40 ± 8 years, BMI 43.4) after RYGB and 38 premenopausal women (41 ± 7 years, BMI 45.7) after SG. Main Outcome Measures: Prior to surgery and 1, 3, 6, 9, 12, 18, and 24 months after surgery sclerostin, DKK-1, CTX, P1NP levels and BMD were measured. Results: Sclerostin, CTX and (to a lesser extent) P1NP increased after surgery and remained elevated during the entire study period (P < 0.001). DKK-1 declined during months 3–9 (P < 0.005) and then remained unchanged, serum phosphate continuously increased (P < 0.001), iPTH remained within the upper normal limit. Sclerostin increases were significantly positively correlated with CTX and P1NP increases and negatively correlated with BMD loss. BMD independently declined regardless of RYGB and SG. Elevations of sclerostin, CTX, P1NP, and phosphate, but not DKK-1 and iPTH, were significant discriminating factors for BMD loss (AUC 0.920). Conclusion: Rapid and sustained increases of sclerostin, CTX, and to a lesser extent, P1NP cause an increase in bone metabolism and result in BMD loss at all skeletal sites.

Membrane estrogen receptor α is essential for estrogen signaling in the male skeleton

2018 ◽  
Vol 239 (3) ◽  
pp. 303-312 ◽  
Author(s):  
H H Farman ◽  
K L Gustafsson ◽  
P Henning ◽  
L Grahnemo ◽  
V Lionikaite ◽  
...  
Keyword(s):  
Estrogen Receptor ◽  
Estrogen Receptor Α ◽  
Estrogen Signaling ◽  
Areal Bone Mineral Density ◽  
Male Mice ◽  
Mineral Density ◽  
Intact Male ◽  
Trabecular Thickness ◽  
Total Body

The importance of estrogen receptor α (ERα) for the regulation of bone mass in males is well established. ERα mediates estrogenic effects both via nuclear and membrane-initiated ERα (mERα) signaling. The role of mERα signaling for the effects of estrogen on bone in male mice is unknown. To investigate the role of mERα signaling, we have used mice (Nuclear-Only-ER; NOER) with a point mutation (C451A), which results in inhibited trafficking of ERα to the plasma membrane. Gonadal-intact male NOER mice had a significantly decreased total body areal bone mineral density (aBMD) compared to WT littermates at 3, 6 and 9 months of age as measured by dual-energy X-ray absorptiometry (DEXA). High-resolution microcomputed tomography (µCT) analysis of tibia in 3-month-old males demonstrated a decrease in cortical and trabecular thickness in NOER mice compared to WT littermates. As expected, estradiol (E2) treatment of orchidectomized (ORX) WT mice increased total body aBMD, trabecular BV/TV and cortical thickness in tibia compared to placebo treatment. E2 treatment increased these skeletal parameters also in ORX NOER mice. However, the estrogenic responses were significantly decreased in ORX NOER mice compared with ORX WT mice. In conclusion, mERα is essential for normal estrogen signaling in both trabecular and cortical bone in male mice. Increased knowledge of estrogen signaling mechanisms in the regulation of the male skeleton may aid in the development of new treatment options for male osteoporosis.

Low circulating Dickkopf-1 and its link with severity of spinal involvement in diffuse idiopathic skeletal hyperostosis

2011 ◽  
Vol 71 (1) ◽  
pp. 71-74 ◽  
Author(s):  
L Senolt ◽  
H Hulejova ◽  
O Krystufkova ◽  
S Forejtova ◽  
L Andres Cerezo ◽  
...  
Keyword(s):  
Bone Formation ◽  
Bone Turnover ◽  
Bone Turnover Markers ◽  
Diffuse Idiopathic Skeletal Hyperostosis ◽  
Serum Levels ◽  
Total Serum ◽  
Mineral Density ◽  
Spinal Involvement ◽  
Turnover Markers ◽  
Dickkopf 1

ObjectiveDickkopf-1 (DKK-1) is an inhibitor of osteoblastogenesis, and its lower levels are linked to new bone formation. The aim of this study was therefore to explore serum levels of DKK-1 and to evaluate DKK-1's association with the severity of spinal involvement in diffuse idiopathic skeletal hyperostosis (DISH).MethodsSerum levels of total and functional DKK-1 and C-reactive protein (CRP) were measured in 37 patients with DISH and 22 healthy age and sex-matched controls. Plain radiographs of the cervical and thoracic spine were performed, and the diagnosis of DISH was defined using the Resnick criteria. Patients were divided into three groups based on spinal involvement. Bone mineral density (BMD) and bone turnover markers were evaluated in patients with DISH.ResultsThe levels of total serum DKK-1 were significantly lower in patients with DISH than in healthy controls (p<0.0001). Importantly, low serum levels of DKK-1 were associated with more severe spinal involvement in DISH, independent of age, sex, disease duration, CRP, bone turnover markers or BMD. However, these findings were less significant for functional DKK-1.ConclusionThese observations indicate that DKK-1 may play a significant role in bone formation during DISH.

CORRELATIONS BETWEEN ISOMETRIC QUADRICEPS MUSCLE STRENGTH AND BONE MINERAL DENSITY

1999 ◽  
Vol 03 (04) ◽  
pp. 275-284 ◽  
Author(s):  
Eva Ribom ◽  
Helena Olofsson ◽  
Karin Piehl-Aulin ◽  
Hans Mallmin ◽  
Sverker Ljunghall
Keyword(s):  
Lumbar Spine ◽  
Muscle Strength ◽  
Premenopausal Women ◽  
Quadriceps Muscle ◽  
Mineral Density ◽  
Quadriceps Muscle Strength ◽  
Significant Relationships ◽  
Total Body ◽  
The Relationship

The purpose of this study was to evaluate the relationship between isometric quadriceps muscle strength and measurements of bone density (BMD), mass (BMC) and ultrasound properties. A total of 113 individuals were included, 53 men and 60 women aged 22-85 years. Isometric quadriceps muscle strength correlated significantly to BMD of the total body for both men (r=0.63, p=0.02) and women r=0.77, p=0.04) after adjustments for age, weight and height. In women, there was also an association between isometric quadriceps muscle strength and BMD of the lumbar spine (r=0.67, p=0.04). These correlations were evident in premenopausal women for BMD at the lumbar spine, femoral neck and total body whereas no significant relationships were seen in postmenopausal women or any age group of men. For isometric quadriceps muscle strength and the ultrasound measurements of the heel, a positive correlation was seen in men and women aged 41-60 years. The findings point to a role of endogenous sex steroids, primarily estrogens, in the correlation between BMD and isometric quadriceps muscle strength.

scholarly journals Bone Metabolism and RANKL/OPG Ratio in Rheumatoid Arthritis Women Treated with TNF-α Inhibitors

2021 ◽  
Vol 10 (13) ◽  
pp. 2905
Author(s):  
Agnieszka Jura-Półtorak ◽  
Anna Szeremeta ◽  
Krystyna Olczyk ◽  
Aleksandra Zoń-Giebel ◽  
Katarzyna Komosińska-Vassev
Keyword(s):  
Bone Metabolism ◽  
Type I Collagen ◽  
Serum Levels ◽  
Nuclear Factor Κb ◽  
Type I ◽  
Mineral Density ◽  
Type I Procollagen ◽  
Tnf Α ◽  
C And N ◽  
Turnover Markers

The aim of this study was to evaluate the effect of anti-tumor necrosis factor α (anti-TNF-α) therapy in combination with methotrexate on bone remodeling and osteoclastogenesis in female patients with RA. Serum levels of bone turnover markers (i.e., C- and N-terminal propeptides of type I procollagen (PICP and PINP), C- and N-terminal cross-linking telopeptides of type I collagen (CTX-I and NTX-I), and soluble receptor activator of nuclear factor κB ligand (sRANKL) and osteoprotegerin (OPG)) were determined by immunoassay at baseline and 15 months after initiation of treatment. Bone mineral density was measured by dual-energy x-ray absorptiometry. We found a significant decrease in serum PINP levels, a biomarker of bone formation, and higher levels of CTX-I and sRANKL indicative of increased bone resorption in RA patients prior to TNFαI treatment compared to the controls. Anti-TNF-α therapy was effective in improving bone metabolism in RA patients as reflected in a decrease in CTX-I (at least partially due to the RANKL/OPG reduction) and a concomitant increase in PINP levels. The bone metabolism changes were independent of the type of TNFαI used. PINP and CTX-I were found to be useful markers of bone metabolism, which may prove the effectiveness of TNF-α therapy earlier than the bone density assessment.

scholarly journals Effect of androgen deprivation therapy on serum levels of sclerostin, Dickkopf-1, and osteoprotegerin: a cross-sectional and longitudinal analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alice Wang ◽  
Nishi Karunasinghe ◽  
Lindsay D. Plank ◽  
Shuotun Zhu ◽  
Sue Osborne ◽  
...  
Keyword(s):  
Androgen Deprivation Therapy ◽  
Longitudinal Analysis ◽  
Serum Levels ◽  
Androgen Deprivation ◽  
Mineral Density ◽  
Cross Sectional ◽  
Prognostic Features ◽  
Increased Risk ◽  
Positive Correlations ◽  
Dickkopf 1

AbstractAndrogen deprivation therapy (ADT) for men with prostate cancer (PCa) results in accelerated bone loss and increased risk of bone fracture. The aim of the present study was to evaluate serum bone markers—sclerostin, Dickkopf-1 (DKK-1) and osteoprotegerin (OPG), in a cohort of 88 PCa patients without known bone metastases, managed with and without ADT, and to analyse their relationship with bone mineral density (BMD) and sex steroids. The cross-sectional analysis between acute-, chronic- and former-ADT groups and PCa controls showed that sclerostin and OPG levels significantly differed between them (p = 0.029 and p = 0.032). Groups contributing to these significant changes were recorded. There were no significant differences in serum DKK-1 levels across the four groups (p = 0.683). In the longitudinal analysis, significant % decreases within groups were seen for DKK-1 [chronic-ADT (− 10.06%, p = 0.0057), former-ADT (− 12.77%, p = 0.0239), and in PCa controls group (− 16.73, p = 0.0022); and OPG levels in chronic ADT (− 8.28%, p = 0.003) and PCa controls group (− 12.82%, p = 0.017)]. However, % changes in sclerostin, DKK-1, and OPG did not differ significantly over 6-months across the evaluated groups. Sclerostin levels showed significant positive correlations with BMD at baseline in the ADT group, while in PCa controls this correlation existed at both baseline and 6-month time points. Sclerostin correlated negatively with testosterone in former ADT users and in PCa controls. Possible prognostic features denoted by parallel increases in sclerostin and BMD are discussed.

scholarly journals Decreased abdominal fat and improved bone metabolism after taekwondo training in obese adolescents

Kinesiology ◽  
2018 ◽  
Vol 50 (1) ◽  
pp. 79-88 ◽  
Author(s):  
Hyun Chul Jung ◽  
Jong Kook Song
Keyword(s):  
Bone Metabolism ◽  
Subcutaneous Fat ◽  
Training Group ◽  
Abdominal Fat ◽  
Control Group ◽  
Mineral Density ◽  
Obese Adolescents ◽  
Turnover Markers ◽  
Metabolic Dysfunctions ◽  
And Control

Accumulation of abdominal fat during adolescence is associated with early metabolic dysfunctions and interrupting bone metabolism. This study aimed at investigating the effects of taekwondo training on abdominal fat and bone metabolism in obese adolescents. Twenty male obese adolescents, with a body mass index above 95th percentile (BMI: 29.4±1.90 kg/m2), aged 12-15 years, were assigned to the taekwondo training group (TKD, n=11) and control group (CON, n=9). Supervised taekwondo training was performed for 60 minutes/day, three times/week at 60-80% of participants’ heart rate reserve for 16 weeks. Body composition and bone mineral density (BMD) were estimated by dual X-ray absorptiometry. A computerized tomography scan was applied to estimate total abdominal fat (TAF), abdominal visceral fat (AVF), abdominal subcutaneous fat (ASF), and AVF to ASF ratio (VSR). Blood samples were analyzed for adipocytokines (leptin and adiponectin) and bone turnover markers (osteocalcin- OC and C-terminal telopeptide-CTx). There were significant interaction effects between abdominal fat variables and training where TAF (p&lt;.01) and AVF (p&lt;.05) decreased in TKD group. Bone metabolism including bone formation (OC, p&lt;.05) and resorption markers (CTx, p&lt;.05) were significantly increased only in the TKD group. The present study suggests that taekwondo training can be an effective afterschool activity program for providing health benefits including improving abdominal fat and bone metabolism in obese adolescents.

scholarly journals Effects of Nrf2 Deficiency on Bone Microarchitecture in an Experimental Model of Osteoporosis

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Lidia Ibáñez ◽  
María Luisa Ferrándiz ◽  
Rita Brines ◽  
David Guede ◽  
Antonio Cuadrado ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Bone Marrow ◽  
Bone Metabolism ◽  
Bone Microarchitecture ◽  
Related Factor ◽  
Mineral Density ◽  
Trabecular Bone Mineral Density ◽  
Bone Marrow Derived Cells

Objective. Redox imbalance contributes to bone fragility. We have evaluated the in vivo role of nuclear factor erythroid derived 2-related factor-2 (Nrf2), an important regulator of cellular responses to oxidative stress, in bone metabolism using a model of postmenopausal osteoporosis.Methods. Ovariectomy was performed in both wild-type and mice deficient in Nrf2 (Nrf2−/−). Bone microarchitecture was analyzed byμCT. Serum markers of bone metabolism were also measured. Reactive oxygen species production was determined using dihydrorhodamine 123.Results. Sham-operated or ovariectomized Nrf2−/−mice exhibit a loss in trabecular bone mineral density in femur, accompanied by a reduction in cortical area in vertebrae. Nrf2 deficiency tended to increase osteoblastic markers and significantly enhanced osteoclastic markers in sham-operated animals indicating an increased bone turnover with a main effect on bone resorption. We have also shown an increased production of oxidative stress in bone marrow-derived cells from sham-operated or ovariectomized Nrf2−/−mice and a higher responsiveness of bone marrow-derived cells to osteoclastogenic stimuli in vitro.Conclusion. We have demonstrated in vivo a key role of Nrf2 in the maintenance of bone microarchitecture.

CTRP3 is Significantly Decreased in Patients with Primary Hyperparathyroidism and Closely Related with Osteoporosis

2019 ◽  
Vol 128 (03) ◽  
pp. 152-157
Author(s):  
Derya Demirtas ◽  
Fettah Acıbucu ◽  
Filiz Alkan Baylan ◽  
Erdinc Gulumsek ◽  
Tayyibe Saler
Keyword(s):  
Primary Hyperparathyroidism ◽  
Serum Levels ◽  
Dual Energy ◽  
Control Group ◽  
Mineral Density ◽  
Urine Calcium ◽  
X Ray ◽  
Complement C1q ◽  
Necrosis Factor

Abstract Background Adipokines derived from adipocytes are one of the important factors that act as circulating regulators of bone metabolism. Complement C1q/tumor necrosis factor-related protein-3 (CTRP3), a paralog of adiponectin, is are member of the CTRP superfamily. The aim of this study was to investigate the role of serum CTRP3 in the development of osteoporosis in patients with primary hyperparathyroidism. Methods This study included 53 patients with diagnosed primary hyperparathyroidism and 30 healthy controls. Laboratory tests for the diagnosis of primary hyperparathyroidism and serum levels of CTRP3 measured for all patients. Bone mineral density was obtained on lumbar spine 1 and 4 by dual energy X-ray absorptiometry. Results Serum CTRP3 levels were lower in patients with primary hyperparathyroidism than in the control group (p<0.001). In addition, primary hyperparathyroidism patients are were divided into two groups as, with and without osteoporosis; the levels of CTRP3 were lower in patients with osteoporosis than in patients without osteoporosis (p=0.004). In logistic regression analysis, only CTRP3 levels independently determined the patients to be osteoporosis (p<0.05). According to this analysis, decreased CTRP3 (per 1 ng/mL) levels were found to increase the risk of patients for osteoporosis by 6.9%. When the CTRP3 cut-off values were taken as 30 ng/mL, it determined osteoporosis with 76.4% sensitivity and 73.2% specificity. CTRP3 and urine calcium levels were independently associated with T score in dual energy X-ray absorptiometry. Conclusions CTRP3 levels were significantly decreased in patients with primary hyperparathyroidism, and it is also related to osteoporosis.

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