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Bone turnover markers

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https://www.readbyqxmd.com/read/28547661/targeting-sclerostin-in-postmenopausal-osteoporosis-focus-on-romosozumab-and-blosozumab
#1
Ian R Reid
Most current treatments for osteoporosis inhibit bone resorption and reduce total fracture numbers by about one-quarter. The identification of the osteocytic protein sclerostin as a potent regulator of bone turnover and bone density has led to the development of a new therapeutic class-agents that inhibit sclerostin activity, resulting in increased bone formation and reduced bone resorption. Romosozumab and blosozumab are monoclonal antibodies that bind to sclerostin, reducing its inhibition of Wnt signaling...
May 25, 2017: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/28543873/effect-of-surgery-vs-observation-skeletal-5-year-outcomes-in-a-randomized-trial-of-patients-with-primary-hpt-the-siph-study
#2
Karolina Lundstam, Ansgar Heck, Kristin Godang, Charlotte Mollerup, Marek Baranowski, Ylva Pernow, Turid Aas, Ola Hessman, Thord Rosén, Jörgen Nordenström, Svante Jansson, Mikael Hellström, Jens Bollerslev
Mild primary hyperparathyroidism (PHPT) is known to affect the skeleton, even though patients usually are asymptomatic. Treatment strategies have been widely discussed. However, long-term randomized studies comparing parathyroidectomy to observation are lacking. The objective was to study the effect of parathyroidectomy (PTX) compared to observation (OBS) on bone mineral density (BMD) in g/cm(2) and T-scores, and on biochemical markers of bone turnover (P1NP and CTX-1), in a prospective randomized controlled study of patients with mild PHPT after 5 years of follow-up...
May 25, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28540505/retrospective-evaluation-of-serum-ctx-levels-after-denosumab-discontinuation-in-patients-with-or-without-prior-exposure-to-bisphosphonates
#3
B Uebelhart, R Rizzoli, S L Ferrari
Discontinuation of denosumab (Dmab) therapy is associated with lower serum CTX levels in osteoporotic patients previously exposed to bisphosphonates compared to those who were not. INTRODUCTION: Discontinuation of Dmab therapy is followed by a transient increase of bone turnover markers (BTMs) above pretreatment values, together with accelerated bone loss, and potentially an increased risk of multiple vertebral fractures. Since a substantial proportion of patients discontinuing Dmab have previously been exposed to bisphosphonates (BPs), we hypothesized that previous BP therapy could attenuate this increase in bone turnover because of the prolonged biological effects of BPs on bone...
May 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28534161/autoantibodies-to-osteoprotegerin-are-associated-with-low-hip-bone-mineral-density-and-history-of-fractures-in-axial-spondyloarthritis-a-cross-sectional-observational-study
#4
Barbara Hauser, Sizheng Zhao, Micaela R Visconti, Philip L Riches, William D Fraser, Isabelle Piec, Nicola J Goodson, Stuart H Ralston
Osteoporosis is a recognised complication of axial spondyloarthritis (axSpA) and is thought to be due to functional impairment and the osteoclast-activating effects of proinflammatory cytokines. The development of autoantibodies to OPG (OPG-Ab) has been associated with severe osteoporosis and increased bone resorption in rheumatoid arthritis. In this study, we screened for the presence of OPG-Ab in axSpA and reviewed their clinical significance. We studied 134 patients, recruited from two centres in the United Kingdom...
May 22, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28532408/bone-turnover-and-periprosthetic-bone-loss-after-cementless-total-hip-arthroplasty-can-be-restored-by-zoledronic-acid-a-prospective-randomized-open-label-controlled-trial
#5
Tsan-Wen Huang, Chao-Jan Wang, Hsin-Nung Shih, Yuhan Chang, Kuo-Chin Huang, Kuo-Ti Peng, Mel S Lee
BACKGROUND: Although the loss of bone mineral density (BMD) after total hip arthroplasty (THA) is a known problem, it remains unresolved. This study prospectively examined the effect of zoledronic acid (ZA) on bone turnover and BMD after cementless THA. METHODS: Between January 2010 and August 2011, 60 patients who underwent cementless THA were randomly assigned to receive either ZA infusion or placebo (0.9% normal saline only) postoperatively. ZA was administered at 2 day and 1 year postoperatively...
May 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28531321/cortical-bone-size-deficit-in-adult-patients-with-type-1-diabetes-mellitus
#6
Charlotte Verroken, Wout Pieters, Loïc Beddeleem, Stefan Goemaere, Hans-Georg Zmierczak, Samyah Shadid, Jean-Marc Kaufman, Bruno Lapauw
CONTEXT: The increased fracture risk associated with type 1 diabetes mellitus (T1DM) remains unexplained by traditional risk factors such as low areal bone mineral density (aBMD). Nonetheless, few data exist on other determinants of bone strength in T1DM, including volumetric BMD (vBMD) and bone geometry. OBJECTIVE: We compared areal and volumetric bone parameters and cortical bone geometry in adult T1DM patients and gender- and age-matched controls. DESIGN: Cross-sectional study including 64 adult T1DM patients (38 men, 41...
May 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28531309/effect-of-antiretroviral-therapy-on-bone-and-renal-health-in-young-adults-infected-with-hiv-in-early-life
#7
Aylin B Unsal, Aviva S Mattingly, Sara E Jones, Julia B Purdy, James C Reynolds, Jeffrey B Kopp, Rohan Hazra, Colleen M Hadigan
Context: HIV antiretroviral (ARV) therapy is associated with renal and bone toxicity, but little is known about the potential cumulative effects in adults exposed to ARVs from birth. Objective: To prospectively evaluate renal and bone health in young adults with lifelong HIV and extensive ARV exposure. Design: Cross-sectional comparison of bone mineral density (BMD by dual-energy X-ray absorptiometry), bone turnover and renal function in young adults infected with HIV in early life (n=65) to matched healthy controls (n=23) and longitudinal evaluation (mean follow-up 4...
May 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28529534/the-role-of-a-dairy-fraction-rich-in-milk-fat-globule-membrane-in-the-suppression-of-postprandial-inflammatory-markers-and-bone-turnover-in-obese-and-overweight-adults-an-exploratory-study
#8
Tara S Rogers, Elieke Demmer, Nancy Rivera, Erik R Gertz, J Bruce German, Jennifer T Smilowitz, Angela M Zivkovic, Marta D Van Loan
BACKGROUND: Inflammation is associated with increased bone resorption; the role of inflammation in postprandial bone turnover has not been explored. Consumption of milk fat globule membrane (MFGM) reduces inflammation in animal models. This study aimed to measure postprandial changes in bone turnover after intake of high saturated fat test meals, with- and without the anti-inflammatory ingredient MFGM. METHODS: Subjects (n = 36 adults) were obese (BMI 30-39...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28522769/osteoporosis-and-osteopenia-are-not-associated-with-t-cell-activation-in-older-cart-treated-hiv-infected-patients
#9
M Krikke, R C W Klomberg, E van der Veer, K Tesselaar, H J J Verhaar, A I M Hoepelman, J E Arends
BACKGROUND: A higher risk of developing osteopenia/ osteoporosis has been seen in HIV-infected patients. We compared HIV-infected patients, all treated with combination antiretroviral therapy (cART), with a low bone mineral density (BMD) (T-score < -1) to those with a normal BMD (T-score > -1), examining the relation with T-cell activation and bone turnover markers (c-terminal telopeptide (CTX) and procollagen type 1 amino-terminal propeptide (P1NP)). METHODS: In this single visit pilot study, bone turnover markers, T-cell activation (CD38 + HLA - DR +) and senescence (CD57+) of T cells were measured in patients who had previously undergone dual energy X-ray absorptiometry scanning...
May 2017: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/28521869/high-fgf21-levels-are-associated-with-altered-bone-homeostasis-in-hiv-1-infected-patients
#10
José M Gallego-Escuredo, Maria Karuna Lamarca, Joan Villarroya, Joan C Domingo, Ma Gracia Mateo, Ma Del Mar Gutierrez, Francesc Vidal, Francesc Villarroya, Pere Domingo, Marta Giralt
BACKGROUND: Fibroblast growth factor-21 (FGF21) has emerged as an important regulator of glucose, lipid, and body weight homeostasis. However, recent experimental studies have reported that increased FGF21 levels may lead to bone loss. OBJECTIVE: To assess the relationship of serum FGF21 levels and altered bone homeostasis in HIV-1-infected patients. DESIGN: Cross-sectional study of 137 HIV-1-infected patients and 35 healthy controls conducted at the Hospital de la Santa Creu i Sant Pau, Barcelona...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28515791/vildagliptin-has-the-same-safety-profile-as-a-sulfonylurea-on-bone-metabolism-and-bone-mineral-density-in-post-menopausal-women-with-type-2-diabetes-a-randomized-controlled-trial
#11
Andre Gustavo Daher Vianna, Claudio Silva de Lacerda, Luciana Muniz Pechmann, Michelle Garcia Polesel, Emerson Cestari Marino, Victoria Zeghbi Cochenski Borba, Fellype de Carvalho Barreto
BACKGROUND: Several antidiabetic therapies affect bone metabolism. Sulfonylureas have the lowest impact on bone among oral antidiabetics. The objective of this study is to compare the effects of vildagliptin and gliclazide modified release (MR) on bone turnover markers (BTMs) and bone mineral density (BMD) in postmenopausal women with uncontrolled type 2 diabetes (T2D). METHODS: Forty-two postmenopausal women with uncontrolled T2D were randomly allocated into vildagliptin or gliclazide MR (control) groups...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28512501/effect-of-traditional-chinese-medicine-product-qiangguyin-on-bone-mineral-density-and-bone-turnover-in-chinese-postmenopausal-osteoporosis
#12
Zhen-Yu Shi, Xin-Gen Zhang, Chun-Wen Li, Kang Liu, Bo-Cheng Liang, Xiao-Lin Shi
Introduction. The aim of this study was to investigate the efficacy of herbal formula QiangGuYin (QGY) in postmenopausal women. Materials and Methods. A total of 240 participants from six clinical centers were randomly to receive alendronate 70 mg/week, QGY granules 20 g/day, and placebo. Primary end points were BMD changes over 6 and 12 months; secondary end points were bone turnover markers changes at 3, 6, 9, and 12 months. Safety was monitored by clinical adverse events reported during the follow-up...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28508284/repeatability-of-quantitative-parameters-of-18f-fluoride-pet-ct-and-biochemical-tumour-and-specific-bone-remodelling-markers-in-prostate-cancer-bone-metastases
#13
Cecilia Wassberg, Mark Lubberink, Jens Sörensen, Silvia Johansson
PURPOSE: 18F-fluoride PET/CT exhibits high sensitivity to delineate and measure the extent of bone metastatic disease in patients with prostate cancer. 18F-fluoride PET/CT could potentially replace traditional bone scintigraphy in clinical routine and trials. However, more studies are needed to assess repeatability and biological uptake variation. The aim of this study was to perform test-retest analysis of quantitative PET-derived parameters and blood/serum bone turnover markers at the same time point...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28504547/site-specific-onset-of-low-bone-density-and-correlation-of-bone-turnover-markers-in-exclusive-breastfeeding-mothers
#14
Jarinthorn Teerapornpuntakit, Pharuhas Chanprapaph, Nitsara Karoonuthaisiri, Narattaphol Charoenphandhu
PURPOSE: Lactation often affects calcium metabolism and induces bone loss. Calcium supplementation and a high calcium diet are recommended to prevent bone loss, especially during inadequate calcium intake. Our study aimed at determining bone loss in breastfeeding mothers, and if it occurred, whether it was site specific and there were correlations between serum bone turnover markers. MATERIALS AND METHODS: Since the 6-month exclusive breastfeeding is usually recommended in several countries, our study examined bone mineral density (BMD) in early (1-2 month), mid (3-4 month)-, and late (5-6 month) lactation compared with nonpregnant, nonlactating control women...
May 15, 2017: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/28502885/contra-lateral-bone-loss-at-the-distal-radius-in-postmenopausal-women-after-a-distal-radius-fracture-a-two-year-follow-up-hrpqct-study
#15
Joost J A de Jong, Jacobus J C Arts, Paul C Willems, Sandrine P G Bours, Judith P A Bons, Paul P C A Menheere, Bert van Rietbergen, Piet P Geusens, Joop P W van den Bergh
Opposite to the fracture side, bone mineral density (BMD) measured by DXA at the contra-lateral side does not change after a distal radius fracture. However, it is unknown if also bone micro-architecture and strength at the contralateral side are unaffected. Therefore, the aim of this study was to assess BMD, micro-architecture and bone mechanical properties at the contra-lateral side during two years follow-up after a distal radius fracture using high resolution peripheral quantitative computed tomography (HRpQCT)...
May 11, 2017: Bone
https://www.readbyqxmd.com/read/28502032/circulating-markers-of-bone-turnover
#16
REVIEW
Marc G Vervloet, Vincent M Brandenburg
Renal osteodystrophy is a feature of chronic kidney disease (CKD), with increasing prevalence as CKD progresses. This bone disease is responsible for major morbidity, including fractures, and a deterioration in the quality of life and its sequelae. Circulating biomarkers of renal osteodystrophy typically indicate bone turnover, but not other features of bone, like bone volume, mineralization, quality or strength. Bone turnover can be considered to be primarily a reflection of bone cell activity, in particular that of osteoblasts and osteoclasts...
May 13, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28500828/the-impact-of-thyroid-autoimmunity-tpoab-on-bone-density-and-fracture-risk-in-postmenopausal-women
#17
Snezana P Polovina, Dragana Miljic, Sladjana Zivojinovic, Natasa Milic, Dragan Micic, Vera Popovic Brkic
OBJECTIVE: Skeletal development, linear growth, cartilage biology and bone turnover are highly dependent on the activity of thyroid hormones. Thyroid dysfunction affects the skeleton, and autoimmune thyroid disease, manifesting as a chronic inflammatory condition, may be an important contributing factor to impaired bone quality in these patients. MATERIALS AND METHODS: Measurement of TSH, FT4, TPOAb and bone mineral density and FRAX score calculations were performed in 189 postmenopausal women (110 euthyroid women and 79 women diagnosed with subclinical hypothyroidism) divided into subgroups according to the presence of TPOAb...
January 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28493902/circulating-levels-of-sclerostin-but-not-dkk1-associate-with-laboratory-parameters-of-ckd-mbd
#18
Geert J Behets, Liesbeth Viaene, Björn Meijers, Frank Blocki, Vincent M Brandenburg, Anja Verhulst, Patrick C D'Haese, Pieter Evenepoel
INTRODUCTION: Mounting evidence indicates that a disturbed Wnt-β-catenin signaling may be involved in the pathogenesis of chronic kidney disease-mineral and bone and mineral disorder (CKD-MBD). Data on the impact of CKD on circulating levels of the Wnt antagonists sclerostin and Dickkopf related protein 1 (DKK1) and the relationship with laboratory parameters of CKD-MBD are incomplete. METHODS: We analyzed serum sclerostin and DKK1 in 308 patients across the stages of chronic kidney disease (kDOQI stage 1-2 n = 41; CKD stage 3 n = 54; CKD stage 4-5 n = 54; hemodialysis n = 100; peritoneal dialysis n = 59) as well as in 49 healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28492133/current-assays-to-determine-free-25-hydroxyvitamin-d-in-serum
#19
Sofie Malmstroem, Lars Rejnmark, John B Imboden, Dolores M Shoback, Daniel D Bikle
The 25-hydroxylated metabolite of vitamin D is the best clinical indicator of vitamin D status. For many years, emphasis has been on measuring total levels of 25-hydroxyvitamin D [25(OH)D], but recently, interest in measuring free 25(OH)D as a potentially better marker of vitamin D status has arisen. Since the 1980s when the first measurements of free 25(OH)D were made, little progress has been made in the development of rapid, reliable methods to determine the levels of free 25(OH)D. For many years, assessment of free 25(OH)D relied on calculations using levels of total 25(OH)D, albumin, and vitamin D binding protein (VDBP), for which many assays exist...
May 11, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28487781/hypocalciuric-hypercalcemia-due-to-impaired-renal-tubular-calcium-excretion-in-a-type-2-diabetic-patient
#20
Sihao Yang, Yan Ren, Xi Li, Haoming Tian, Zhenmei An, Tao Chen
The case we presented here was a 73-year-old gentleman, who was admitted to endocrinology department due to recurrent fatigue for 1 year. He had medical histories of type 2 diabetes for 18 years and developed CKD 4 years ago. He also suffered from dilated cardiomyopathy, and coronary heart disease, moderate sleep apnea syndrome, primary hypothyroidism, and gout. His treatment regimen was complicated which included Caltrate D and compound α-keto acid (1200 mg calcium/d). Laboratory examination revealed that his serum calcium level elevated, 24-hour urine calcium output decreased, PTH level was suppressed, and 25-hydroxyvitamin D was in normal low range...
2017: Case Reports in Endocrinology
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