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Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research

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https://www.readbyqxmd.com/read/29044710/tracking-the-progression-of-osteolytic-and-osteosclerotic-lesions-in-mice-using-serial-in-vivo-micro-ct-applications-to-the-assessment-of-bisphosphonate-treatment-efficacy
#1
G M Campbell, R J Tower, T Damm, P Kneissl, A Rambow, C Schem, S Tiwari, C C Glüer
The metastasis of tumour cells to bone can lead to osteolytic and osteosclerotic lesions, which cause severe, highly-localized bone destruction and abnormal bone apposition, respectively. Accurate quantification of lesion progression is critical to understand underlying mechanisms and assess treatment efficacy; however, standard structural parameters may be insensitive to local changes. We developed methods to quantify osteolytic and osteosclerotic lesions using micro-computed tomography (micro-CT) within in vivo mouse datasets...
October 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29044768/prevalence-of-osteoporosis-and-low-bone-mass-among-puerto-rican-older-adults
#2
Sabrina E Noel, Kelsey M Mangano, John L Griffith, Nicole C Wright, Bess Dawson-Hughes, Katherine L Tucker
Historically, osteoporosis has not been considered a public health priority for the Hispanic population. However, recent data indicate that Mexican Americans are at increased risk for this chronic condition. Although it is well established that there is heterogeneity in social, lifestyle, and health-related factors among Hispanic subgroups, there are currently few studies on bone health among Hispanic subgroups other than Mexican Americans. The current study aimed to determine the prevalence of osteoporosis and low bone mass (LBM) among 953 Puerto Rican adults, aged 47 to 79 yr and living on the U...
October 17, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29044725/serum-sclerostin-levels-in-adults-with-osteogenesis-imperfecta-comparison-with-normal-individuals-and-response-to-teriparatide-therapy
#3
Lindsey Nicol, Ying Wang, Rosamund Smith, John Sloan, Sandesh C S Nagamani, Jay Shapiro, Brendan Lee, Eric Orwoll
Sclerostin (SOST), a glycoprotein primarily derived from osteocytes, is an important regulator of bone remodeling. Osteogenesis imperfecta ([1]) is a heritable disorder of bone characterized by low bone mass, bone fragility, recurrent fractures, and bone deformities. Altered SOST-mediated signaling may have a role in pathogenesis of type I collagen-related OI; however this has not been evaluated in humans. We measured serum SOST levels in adults with OI who were enrolled in a randomized, placebo-controlled clinical trial that evaluated the effects of osteoanabolic therapy with teriparatide...
October 17, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29044707/the-effect-of-vitamin-d-supplementation-on-bone-metabolic-markers-in-chronic-kidney-disease
#4
Ashok Kumar Yadav, Vivek Kumar, Vinod Kumar, Debasish Banerjee, Krishan Lal Gupta, Vivekanand Jha
Use of active forms of vitamin D is advocated in CKD patients for treatment of mineral bone disease because of the presumption that native forms of vitamin D would not undergo significant activation to calcitriol, the most active biological form of vitamin D. We present secondary analysis looking at bone turnover in subjects who completed the randomized, double blind, placebo controlled trial investigating the effect of cholecalciferol supplementation on vascular function in non-diabetic CKD stage G3-4 and vitamin D ≤20ng/ml [CTRI/2013/05/003648]...
October 17, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29044705/subchondral-trabecular-rod-loss-and-plate-thickening-in-the-development-of-osteoarthritis
#5
Yan Chen, Yizhong Hu, Y Eric Yu, Xingjian Zhang, Tezita Watts, Bin Zhou, Ji Wang, Ting Wang, Weiwei Zhao, Kwong Yuen Chiu, Frankie K L Leung, Xu Cao, William W Lu, William Macaulay, Kyle K Nishiyama, Elizabeth Shane, X Edward Guo
Developing effective treatment for osteoarthritis (OA), a prevalent and disabling disease, has remained a challenge, primarily due to limited understanding of its pathogenesis and late diagnosis. In the subchondral bone, rapid bone loss following traumatic injuries and bone sclerosis at the advanced stage of OA are well-recognized hallmarks of the disease. Recent studies have further demonstrated the crucial contribution of subchondral bone in the development of OA. However, the microstructural basis of these bone changes has not been examined thoroughly, and the paradox of how abnormal resorption can eventually lead to bone sclerosis remains unanswered...
October 17, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29024249/bone-strength-in-girls-and-boys-following-a-distal-radius-fracture-a-2-year-hr-pqct-double-cohort-study
#6
Heather M Macdonald, Mikko Määttä, Leigh Gabel, Kishore Mulpuri, Heather A McKay
PURPOSE: We recently reported impaired bone strength in girls with low- to moderate-energy distal radius fractures (Fx) compared with girls with no history of forearm fractures (Non-Fx). We aimed to determine whether bone strength deficits observed at baseline were still present after two years. METHODS: We assessed bone strength, microarchitecture and BMD of the non-fractured (Fx) and non-dominant (Non-Fx) distal radius (7% site) at baseline, 12- and 24-months using high-resolution pQCT (Scanco Medical) in 104 girls (11...
October 12, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29024120/remodeling-and-modeling-based-bone-formation-with-teriparatide-versus-denosumab-a-longitudinal-analysis-from-baseline-to-3-months-in-the-ava-study
#7
David W Dempster, Hua Zhou, Robert R Recker, Jacques P Brown, Christopher P Recknor, E Michael Lewiecki, Paul D Miller, Sudhaker D Rao, David L Kendler, Robert Lindsay, John H Krege, Jahangir Alam, Kathleen A Taylor, Thomas E Melby, Valerie A Ruff
There has been renewed interest of late in the role of modeling-based formation (MBF) during osteoporosis therapy. Here we describe early effects of an established anabolic (teriparatide) versus antiresorptive (denosumab) agent on remodeling-based formation (RBF), MBF, and overflow MBF (oMBF) in human transiliac bone biopsies. Postmenopausal women with osteoporosis received subcutaneous teriparatide (n = 33, 20 µg/day) or denosumab (n = 36, 60 mg once/6 months), open-label for 6 months at 7 US and Canadian sites...
October 12, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29024045/association-between-dietary-fiber-intake-and-bone-loss-in-the-framingham-offspring-study
#8
Zhaoli Dai, Yuqing Zhang, Na Lu, David T Felson, Douglas P Kiel, Shivani Sahni
Dietary fiber may increase calcium absorption, but its role in bone mineralization is unclear. Furthermore, the health effect of dietary fiber may be different between genders. We examined the association between dietary fiber (total fiber and fiber from cereal, fruits, vegetables, nuts and legumes) and bone loss at the femoral neck, trochanter and lumbar spine (L2-4) in older men and women. In the Framingham Offspring Study, at baseline (1996-2001), diet was assessed using the Willett food frequency questionnaire and bone mineral density (BMD) was measured using dual-energy X-ray absorptiometry...
October 12, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29023918/scrutinizing-the-genetic-underpinnings-of-bone-strength
#9
Fernando Rivadeneira, Andre G Uitterlinden
Every year osteoporosis causes millions of fractures worldwide, with the lifetime risk of suffering a wrist, hip or vertebral fracture estimated to be about 30% in developed countries [1]. Osteoporosis has been operationally defined for diagnostic and treatment purposes on the basis of the bone mineral density (BMD) assessment performed at the skeletal sites where fracture is most common. Nevertheless, BMD measurement alone is not optimal for the detection of individuals at high risk of fracture.
October 12, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29024060/loss-of-dnmt3b-in-chondrocytes-leads-to-delayed-endochondral-ossification-and-fracture-repair
#10
Cuicui Wang, Yousef Abu-Amer, Regis J O'Keefe, Jie Shen
Despite advanced understanding of signaling mediated by local and systemic factors, the role of epigenetic factors in the regulation of bone regeneration remains vague. The DNA methyltransferases (Dnmts) Dnmt3a and Dnmt3b have tissue specific expression patterns and create unique methylation signatures to regulate gene expression. Using a stabilized murine tibia fracture model we find that Dnmt3b is induced early in fracture healing, peaks at 10 days post fracture (dpf), and declines to nearly undetectable levels by 28 dpf...
October 10, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28987002/bone-turnover-in-young-adult-men-cross-sectional-determinants-and-associations-with-prospectively-assessed-bone-loss
#11
Charlotte Verroken, Hans-Georg Zmierczak, Stefan Goemaere, Jean-Marc Kaufman, Bruno Lapauw
Biochemical markers of bone turnover are higher in young adult men than in middle-aged men or young adult women. Nonetheless, little is known about the determinants and clinical significance hereof. The present study examined determinants of serum bone turnover markers in men around peak bone mass age, and explored whether bone turnover at this age predicts subsequent changes in bone mass. We used cross-sectional and longitudinal data from 973 and 428 healthy men, respectively, aged 25-45 years at baseline, including baseline procollagen type 1 amino-terminal propeptide (PINP), osteocalcin, and C-terminal telopeptide of type 1 collagen (CTX) from fasting serum samples, baseline questionnaire-assessed physical activity levels, and baseline and follow-up dual energy X-ray absorptiometry-derived areal bone mineral density (aBMD) and body composition...
October 7, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28986986/depletion-of-mast-cells-and-macrophages-impairs-heterotopic-ossification-in-an-acvr1-r206h-mouse-model-of-fibrodysplasia-ossificans-progressiva
#12
Michael R Convente, Salin A Chakkalakal, EnJun Yang, Robert J Caron, Deyu Zhang, Taku Kambayashi, Frederick S Kaplan, Eileen M Shore
Heterotopic ossification (HO) is a clinical condition that often reduces mobility and diminishes quality of life for affected individuals. The most severe form of progressive HO occurs in those with fibrodysplasia ossificans progressiva (FOP; OMIM #135100), a genetic disorder caused by a recurrent heterozygous gain-of-function mutation (R206H) in the bone morphogenetic protein (BMP) type I receptor ACVR1/ALK2. In individuals with FOP, episodes of HO frequently follow injury. The first sign of active disease is commonly an inflammatory "flare-up" that precedes connective tissue degradation, progenitor cell recruitment, and endochondral HO...
October 7, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28976602/corrigendum
#13
(no author information available yet)
No abstract text is available yet for this article.
October 4, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28976598/soluble-inflammatory-markers-and-risk-of-incident-fractures-in-older-adults-the-cardiovascular-health-study
#14
Danijela Stojanović, Petra Bůžková, Kenneth J Mukamal, Susan R Heckbert, Bruce M Psaty, Howard A Fink, Jane A Cauley, Erin Wallace, Lesley H Curtis, Calvin Hirsch, Matthew Budoff, Dong Li, Rebekah Young, Diana Jalal, Joseph A C Delaney
Several in vitro and animal studies have showed that inflammatory markers play a role in bone remodeling and pathogenesis of osteoporosis. Additionally, some human longitudinal studies showed suggestive associations between elevated inflammatory markers and increased risk of non-traumatic fractures. We examined several inflammatory markers and multiple fracture types in a single study of older individuals with extensive follow-up. We assessed the association of four inflammatory markers with the risk of incident hip fractures among 5,265 participants of the Cardiovascular Health Study (CHS) and a composite endpoint of incident fractures of the hip, pelvis, humerus, or proximal forearm in 4,477 participants...
October 4, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28975661/high-intensity-resistance-and-impact-training-improves-bone-mineral-density-and-physical-function-in-postmenopausal-women-with-osteopenia-and-osteoporosis-the-liftmor-randomized-controlled-trial
#15
Steven L Watson, Benjamin K Weeks, Lisa J Weis, Amy T Harding, Sean A Horan, Belinda R Beck
Optimal osteogenic mechanical loading requires the application of high-magnitude strains at high rates. High-intensity resistance and impact training (HiRIT) applies such loads but is not traditionally recommended for individuals with osteoporosis because of a perceived high risk of fracture. The purpose of the LIFTMOR trial was to determine the efficacy and to monitor adverse events of HiRIT to reduce parameters of risk for fracture in postmenopausal women with low bone mass. Postmenopausal women with low bone mass (T-score < -1...
October 4, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28960489/evaluation-of-radius-microstructure-and-areal-bone-mineral-density-improves-fracture-prediction-in-postmenopausal-women
#16
Emmanuel Biver, Claire Durosier-Izart, Thierry Chevalley, Bert van Rietbergen, René Rizzoli, Serge Ferrari
A majority of low-trauma fractures occurs in subjects with only moderate decrease of areal bone mineral density (aBMD), i.e osteopenia, assessed by dual-energy X-ray absorptiometry (DXA), or low fracture probability assessed by FRAX. We investigated whether peripheral bone microstructure and estimated strength improve the prediction of incident fractures beyond central DXA and FRAX. In this population-based study of 740 postmenopausal women (age 65.0 ± 1.4 years) from the Geneva Retirees Cohort (ISRCTN registry 11865958), we assessed at baseline cortical (Ct) and trabecular (Tb) volumetric bone mineral density (vBMD) and microstructure by peripheral quantitative computed tomography (HR-pQCT), bone strength by micro-finite element analysis, aBMD and trabecular bone score (TBS) by DXA, and FRAX fracture probability...
September 28, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28940640/bicarbonate-recycling-by-hif-1-dependent-carbonic-anhydrase-isoforms-9-and-12-is-critical-in-maintaining-intracellular-ph-and-viability-of-nucleus-pulposus-cells
#17
Elizabeth S Silagi, Zachary R Schoepflin, Erin L Seifert, Christophe Merceron, Ernestina Schipani, Irving M Shapiro, Makarand V Risbud
Intervertebral disc degeneration is a ubiquitous condition closely linked to chronic low-back pain. The health of the avascular nucleus pulposus (NP) plays a crucial role in the development of this pathology. We tested the hypothesis that a network comprising HIF-1α, Carbonic anhydrase (CA) 9 and 12 isoforms, and sodium-coupled bicarbonate cotransporters (NBCs) buffer intracellular pH through coordinated bicarbonate recycling. Contrary to the current understanding of NP cell metabolism, analysis of metabolic-flux data from Seahorse XF analyzer showed that CO2 hydration contributes a significant source of extracellular proton production in NP cells, with a smaller input from glycolysis...
September 23, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28929525/diabetes-and-deficits-in-cortical-bone-density-microarchitecture-and-bone-size-framingham-hr-pqct-study
#18
Elizabeth J Samelson, Serkalem Demissie, L Adrienne Cupples, Xiaochun Zhang, Hanfei Xu, Ching-Ti Liu, Steven K Boyd, Robert R McLean, Kerry E Broe, Douglas P Kiel, Mary L Bouxsein
Older adults with type 2 diabetes (T2D) tend to have normal or greater areal bone mineral density (aBMD), as measured by DXA, than those who do not have diabetes (non-T2D). Yet risk of fracture is higher in T2D, including 40% to 50% increased hip fracture risk. We used HR-pQCT to investigate structural mechanisms underlying skeletal fragility in T2D. We compared cortical and trabecular bone microarchitecture, density, bone area, and strength in T2D and non-T2D. In secondary analyses we evaluated whether associations between T2D and bone measures differed according to prior fracture, sex, and obesity...
September 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28926142/primary-osteoporosis-is-not-reflected-by-disease-specific-dna-methylation-or-accelerated-epigenetic-age-in-blood
#19
Eduardo Fernandez-Rebollo, Monika Eipel, Lothar Seefried, Per Hoffmann, Klaus Strathmann, Franz Jakob, Wolfgang Wagner
Osteoporosis is an age-related metabolic bone disease. Hence, osteoporotic patients might suffer from molecular features of accelerated aging, which is generally reflected by specific age-associated DNA methylation (DNAm) changes. In this study, we analyzed genome wide DNAm profiles of peripheral blood from patients with manifest primary osteoporosis and non-osteoporotic controls. Statistical analysis did not reveal any individual CG dinucleotides (CpG sites) with significant aberrant DNAm in osteoporosis. Subsequently, we analyzed if age-associated DNAm patterns are increased in OP...
September 19, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28926125/the-prevalence-of-vertebral-fractures-is-associated-with-reduced-hip-bone-density-and-inferior-peripheral-appendicular-volumetric-bone-density-and-structure-in-older-women
#20
Lisa Johansson, Daniel Sundh, Michael Zoulakis, Robert Rudäng, Anna Darelid, Helena Brisby, Anna G Nilsson, Dan Mellström, Mattias Lorentzon
Vertebral fractures (VF) are among the most severe and prevalent osteoporotic fractures. Their association with bone microstructure have been investigated in several retrospective case-control studies with spine radiography for diagnosis of VF. The aim of this population-based cross-sectional study of 1027 women aged 75-80 years, was to investigate if prevalent VF, identified by vertebral fracture assessment (VFA) by dual-energy X-ray absorptiometry (DXA), was associated with appendicular volumetric bone density, structure and bone material strength index (BMSi), independently of hip areal bone mineral density (aBMD)...
September 19, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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