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https://www.readbyqxmd.com/read/28543940/greater-gains-in-spine-and-hip-strength-for-romosozumab-compared-to-teriparatide-in-postmenopausal-women-with-low-bone-mass
#1
T M Keaveny, D B Crittenden, M A Bolognese, H K Genant, K Engelke, B Oliveri, J P Brown, B L Langdahl, C Yan, A Grauer, C Libanati
Romosozumab is a monoclonal antibody that inhibits sclerostin and has been shown to reduce the risk of fractures within 12 months. In a Phase II, randomized, placebo-controlled clinical trial of treatment-naïve postmenopausal women with low bone mass, romosozumab increased BMD at the hip and spine by the dual effect of increasing bone formation and decreasing bone resorption. In a substudy of that trial, which included placebo and teriparatide arms, here we investigated whether those observed increases in BMD also resulted in improvements in estimated strength, as assessed by finite element analysis...
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/28543781/fracture-prospectively-recorded-from-pre-puberty-to-young-adulthood-are-they-markers-of-peak-bone-mass-and-strength-in-males
#2
Chevalley T, J-P Bonjour, M-C Audet, F Merminod, B van Rietbergen, R Rizzoli, S Ferrari
Fractures are common in otherwise healthy children and adolescents. They result from trauma of varying severity. Some reflect a greater skeletal fragility. A long-term implication of these fractures is their potentiality to predict adult bone fragility and increased risk of osteoporosis in later life. Using DXA, HR-pQCT and µFEA measurements, we previously found in 124 healthy females followed from the age of 7.9 to 20.4 years, substantial deficits in both structural and strength components of the radius in the 42 girls who sustained a fracture during skeletal development...
May 24, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28542607/sirt1-is-a-positive-regulator-of-the-master-osteoblast-transcription-factor-runx2
#3
Kayvan Zainabadi, Cassie J Liu, Leonard Guarente
Activation of SIRT1 has previously been shown to protect mice against osteoporosis through yet ill-defined mechanisms. In this study, we outline a role for SIRT1 as a positive regulator of the master osteoblast transcription factor, RUNX2. We find that ex vivo deletion of sirt1 leads to decreased expression of runx2 downstream targets, but not runx2 itself, along with reduced osteoblast differentiation. Reciprocally, treatment with a SIRT1 agonist promotes osteoblast differentiation, as well as the expression of runx2 downstream targets, in a SIRT1-dependent manner...
2017: PloS One
https://www.readbyqxmd.com/read/28540890/prevalence-of-osteoporosis-in-patients-with-chronic-kidney-disease-stages-3-5-in-comparison-with-age-and-sex-matched-controls-a-study-from-kashmir-valley-tertiary-care-center
#4
M Saleem Najar, Mohamad Muzzafer Mir, Mudasir Muzamil
Chronic kidney disease (CKD) is associated with a range of metabolic bone diseases. Fracture rates are higher in CKD patients than age-matched controls throughout all the five stages of CKD. Dialysis patients have 4 times as many hip fractures as expected for their age. CKD forms an independent risk factor for osteoporosis, even in the absence of traditional risk factors. This study was carried out at the nephrology unit in a tertiary care center of Kashmir to know the prevalence of osteoporosis in CKD patients having glomerular filtration rate (GFR) <60 mL/min (stages 3-5)...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28540650/awareness-of-osteoporosis-in-a-polytechnic-in-enugu-south-east-nigeria
#5
R Njeze Ngozi, Obi Ikechukwu, Ajuba Miriam, Agwu-Umahi Olanike, D Akpagbula Ulugo, C Njeze Nneze
This study aims to determine the awareness of osteoporosis and factors that determine awareness of osteoporosis. Results showed that osteoporosis awareness was associated with age (p = 0.006) and occupation (p < 0.001) but not gender, marital status, and level of education. There is therefore need for educational interventions to improve awareness of osteoporosis. INTRODUCTION: Osteoporosis is a bone disease in which the bone becomes porous, brittle, and more susceptible to fracture...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28540603/positioning-novel-biologicals-in-ckd-mineral-and-bone-disorders
#6
REVIEW
Lida Tartaglione, Marzia Pasquali, Silverio Rotondi, Maria Luisa Muci, Adrian Covic, Sandro Mazzaferro
Renal osteodystrophy (ROD), the histologic bone lesions of chronic kidney disease (CKD), is now included in a wider syndrome with laboratory abnormalities of mineral metabolism and extra-skeletal calcifications or CKD-mineral and bone disorders (CKD-MBD), to highlight the increased burden of mortality. Aging people, frequently identified as early CKD, could suffer from either the classical age-related osteoporosis (OP) or ROD. Distinguishing between these two bone diseases may not be easy without bone biopsy...
May 24, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28540268/effects-of-high-and-low-doses-of-folic-acid-on-the-soluble-receptor-activator-of-nuclear-factor-kappa-b-ligand-osteoprotegerin-ratio-during-pregnancy
#7
Nazila Fathi Maroufi, Amir Ghorbanihaghjo, Manizheh Sayyah Melli, Maryam Vaezi, Zohreh Hekmati Azar Mehrabani, Maryam Bannazadeh Amirkhiz, Nadereh Rashtchizadeh
BACKGROUND: Pregnancy Associated Osteoporosis (PAO) can lead to serious difficulties such as fragility fractures, elongated back pain and height loss in affected women. Soluble Receptor Activator of Nuclear Factor-Kappa B ligand (sRANKL) to Osteoprotegerin (OPG) ratio is chosen as a bone metabolism equation in many bone diseases characterized by bone resorption, such as post-menopausal osteoporosis and would be modified with folic acid supplementation. This study was done to compare the effects of high dose (5mg/day) and low dose (0...
April 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28539667/strontium-loaded-titania-nanotube-arrays-repress-osteoclast-differentiation-through-multiple-signalling-pathways-in-vitro-and-in-vivo-studies
#8
Baoguo Mi, Wei Xiong, Na Xu, Hanfeng Guan, Zhong Fang, Hui Liao, Yong Zhang, Biao Gao, Xiang Xiao, Jijiang Fu, Feng Li
The loosening of implants is an important clinical issue, particularly for patients with osteoporosis. In these patients, an implant should preferably both promote osteoblast differentiation and repress osteoclastic resorption. In the present study, we fabricated coatings containing TiO2 nanotubes (NTs) incorporated with strontium (Sr) on titanium (Ti) surfaces through hydrothermal treatment. The amount of loaded Sr was controlled by hydrothermally treating the samples in a Sr(OH)2 solution for 1 and 3 h (samples NT-Sr1h and NT-Sr3h, respectively) and found that both types of NT-Sr samples inhibited osteoclast differentiation by reducing the expression of osteoclast marker genes...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28539166/can-secondary-osteoporosis-be-identified-when-screening-for-osteoporosis-with-digital-x-ray-radiogrammetry-initial-results-from-the-stockholm-osteoporosis-project-stop
#9
Michael L Wilczek, Johan Kälvesten, Ingrid Bergström, Ylva Pernow, Maria Sääf, Bo Freyschuss, Torkel B Brismar
OBJECTIVES: To identify causes of low age-adjusted bone mass at digital X-ray radiogrammetry (DXR) in individuals attending an osteoporosis screening program. STUDY DESIGN: In a descriptive observational cohort study, women aged 40-75 years who attended a general mammography screening program had their bone mass investigated with DXR and answered a questionnaire regarding several clinical risk factors for osteoporosis. Each month the 2% with the lowest Z-scores were selected for further clinical examination with DXA of the hip and lumbar spine and pre-defined blood tests...
July 2017: Maturitas
https://www.readbyqxmd.com/read/28538730/blocking-fsh-induces-thermogenic-adipose-tissue-and-reduces-body-fat
#10
Peng Liu, Yaoting Ji, Tony Yuen, Elizabeth Rendina-Ruedy, Victoria E DeMambro, Samarth Dhawan, Wahid Abu-Amer, Sudeh Izadmehr, Bin Zhou, Andrew C Shin, Rauf Latif, Priyanthan Thangeswaran, Animesh Gupta, Jianhua Li, Valeria Shnayder, Samuel T Robinson, Yue Eric Yu, Xingjian Zhang, Feiran Yang, Ping Lu, Yu Zhou, Ling-Ling Zhu, Douglas J Oberlin, Terry F Davies, Michaela R Reagan, Aaron Brown, T Rajendra Kumar, Solomon Epstein, Jameel Iqbal, Narayan G Avadhani, Maria I New, Henrik Molina, Jan B van Klinken, Edward X Guo, Christoph Buettner, Shozeb Haider, Zhuan Bian, Li Sun, Clifford J Rosen, Mone Zaidi
Menopause is associated with bone loss and enhanced visceral adiposity. A polyclonal antibody that targets the β-subunit of the pituitary hormone follicle-stimulating hormone (Fsh) increases bone mass in mice. Here, we report that this antibody sharply reduces adipose tissue in wild-type mice, phenocopying genetic haploinsufficiency for the Fsh receptor gene Fshr. The antibody also causes profound beiging, increases cellular mitochondrial density, activates brown adipose tissue and enhances thermogenesis. These actions result from the specific binding of the antibody to the β-subunit of Fsh to block its action...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28538396/effects-of-teriparatide-versus-alendronate-for-treatment-of-postmenopausal-osteoporosis-a-meta-analysis-of-randomized-controlled-trials
#11
Ya-Kang Wang, Si-Qing Qin, Tao Ma, Wei Song, Ren-Qi Jiang, Jian-Bin Guo, Kun Li, Yu-Min Zhang
OBJECTIVES: Osteoporosis remains a clinical challenge. Teriparatide is an anabolic drug and alendronate is an antiresorptive agent; both are used in the treatment of osteoporosis. Comprehensive reviews investigating the comparative safety and efficacy of teriparatide versus alendronate are scarce. Therefore, we conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to evaluate the safety and efficacy of teriparatide versus alendronate for the treatment of postmenopausal osteoporosis...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28537325/association-of-protein-intake-with-bone-mineral-density-and-bone-mineral-content-among-elderly-women-the-ostpre-fracture-prevention-study
#12
M Isanejad, J Sirola, J Mursu, H Kröger, M Tuppurainen, A T Erkkilä
It has been hypothesized that high protein intakes are associated with lower bone mineral content (BMC). Previous studies yield conflicting results and thus far no studies have undertaken the interaction of body mass index (BMI) and physical activity with protein intakes in relation to BMC and bone mineral density (BMD). OBJECTIVE: To evaluate the associations of dietary total protein (TP), animal protein (AP) and plant protein (PP) intakes with BMC and BMD and their changes. We tested also the interactions of protein intake with, obesity (BMI ≤30 vs...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28536889/the-phenotype-of-patients-with-a-recent-fracture-a-literature-survey-of-the-fracture-liaison-service
#13
REVIEW
Lisanne Vranken, Caroline E Wyers, Joop P W van den Bergh, Piet P M M Geusens
The aetiology of fractures in patients aged 50 years and older is multifactorial, and includes bone- and fall-related risks. The Fracture Liaison Service (FLS) is recommended to identify patients with a recent fracture and to evaluate their subsequent fracture risk, in order to take measures to decrease the risk of subsequent fractures in patients with a high risk phenotype. A literature survey was conducted to describe components of the bone- and fall-related phenotype of patients attending the FLS. Components of the patient phenotype at the FLS have been reported in 33 studies...
May 24, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28536469/angiotensin-1-7-ameliorates-the-structural-and-biochemical-alterations-of-ovariectomy-induced-osteoporosis-in-rats-via-activation-of-ace-2-mas-receptor-axis
#14
Hatem M Abuohashish, Mohammed M Ahmed, Dina Sabry, Mahmoud M Khattab, Salim S Al-Rejaie
The local and systemic renin angiotensin system (RAS) influences the skeletal system micro-structure and metabolism. Studies suggested angiotensin 1-7 (Ang(1-7)) as the beneficial RAS molecule via Mas receptor activation. This study examines the function of Ang(1-7) in bone micro-architecture and metabolism in an ovariectomized (OVX) rodent model of osteoporosis. OVX rats showed structural and bone metabolic degeneration in parallel with suppressed expressions of the angiotensin converting enzyme-2 (ACE-2)/Ang(1-7)/Mas components...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28535813/erratum-to-mirna-profiling-of-whole-trabecular-bone-identification-of-osteoporosis-related-changes-in-mirnas-in-human-hip-bones
#15
Laura De-Ugarte, Guy Yoskovitz, Susana Balcells, Robert Güerri-Fernández, Santos Martinez-Diaz, Leonardo Mellibovsky, Roser Urreizti, Xavier Nogués, Daniel Grinberg, Natalia García-Giralt, Adolfo Díez-Pérez
No abstract text is available yet for this article.
May 23, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28535619/prevalence-and-incidence-of-osteoporotic-fractures-in-patients-on-long-term-glucocorticoid-treatment-for-rheumatic-diseases-the-glucocorticoid-induced-osteoporosis-tool-giotto-study
#16
M Rossini, O Viapiana, M Vitiello, N Malavolta, G La Montagna, S Maddali Bongi, O Di Munno, R Nuti, C U Manzini, C Ferri, L Bogliolo, A Mathieu, F Cantatore, A Del Puente, M Muratore, W Grassi, B Frediani, G Saviola, P Delvino, L Mirone, G Ferraccioli, G Tripi, I Piazza, D Gatti
Osteoporosis and fractures are common and invalidating consequences of chronic glucorticoid (GC) treatment. Reliable information regarding the epidemiology of GC induced osteoporosis (GIOP) comes exclusively from the placebo group of randomized clinical trials while observational studies are generally lacking data on the real prevalence of vertebral fractures, GC dosage and primary diagnosis. The objective of this study was to evaluate the prevalence and incidence of osteoporotic fractures and to identify their major determinants (primary disease, GC dosage, bone mineral density, risk factors, specific treatment for GIOP) in a large cohort of consecutive patients aged >21 years, on chronic treatment with GC (≥5 mg prednisone - PN - equivalent) and attending rheumatology centers located all over Italy...
May 22, 2017: Reumatismo
https://www.readbyqxmd.com/read/28535616/drug-induced-osteonecrosis-of-the-jaw-the-state-of-the-art
#17
A Fassio, F Bertoldo, L Idolazzi, O Viapiana, M Rossini, D Gatti
Osteonecrosis of the jaw (ONJ) is a rare adverse event of antiresorptive drugs such as bisphosphonates (BP) and denosumab (DMAb). The diagnosis of ONJ is considered in cases where exposed bone in the maxillofacial region does not heal within 8 weeks in a patient previously treated with an antiresorptive agent. In patients with osteoporosis, ONJ is reported as a very rare adverse event while in oncologic patients with bone metastases or malignant hypercalcemia the incidence is significantly higher (up to the 1-10% of the patients)...
May 22, 2017: Reumatismo
https://www.readbyqxmd.com/read/28534995/low%C3%A2-level-mechanical-vibration-enhances-osteoblastogenesis-via-a-canonical-wnt-signaling%C3%A2-associated-mechanism
#18
Heqi Gao, Mingming Zhai, Pan Wang, Xuhui Zhang, Jing Cai, Xiaofei Chen, Guanghao Shen, Erping Luo, Da Jing
Osteoporosis is a skeletal metabolic disease characterized by reduced bone mass and a high susceptibility to fractures, in which osteoblasts and osteoclasts are highly involved in the abnormal bone remodeling processes. Recently, low‑magnitude, high‑frequency whole‑body vibration has been demonstrated to significantly reduce osteopenia experimentally and clinically. However, the underlying mechanism regarding how osteoblastic activity is altered when bone tissues adapt to mechanical vibration remains elusive...
May 19, 2017: Molecular Medicine Reports
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
#19
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/28532056/stiff-porous-scaffolds-from-magnetized-alumina-particles-aligned-by-magnetic-freeze-casting
#20
Michael B Frank, Steven E Naleway, Tsuk Haroush, Chin-Hung Liu, Sze Hei Siu, Jerry Ng, Ivan Torres, Ali Ismail, Keyur Karandikar, Michael M Porter, Olivia A Graeve, Joanna McKittrick
Bone consists of a hard mineral phase and a compliant biopolymer phase resulting in a composite material that is both lightweight and strong. Osteoporosis that degrades spongy bone preferentially over time leads to bone brittleness in the elderly. A porous ceramic material that can mimic spongy bone for a one-time implant provides a potential solution for the future needs of an aging population. Scaffolds made by magnetic freeze casting resemble the aligned porosity of spongy bone. A magnetic field applied throughout freezing induces particle chaining and alignment of lamellae structures between growing ice crystals...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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