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Bone mineral density

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https://www.readbyqxmd.com/read/28090460/efficacy-and-safety-of-dienogest-in-patients-with-endometriosis-a-single-center-observational-study-over-12-months
#1
So Yun Park, Sung Hoon Kim, Hee Dong Chae, Chung-Hoon Kim, Byung Moon Kang
OBJECTIVE: To evaluate the efficacy and safety of dienogest treatment in patients who had received dienogest for 12 months or more to treat endometriosis. METHODS: We analyzed the clinical data of 188 women with endometriosis who had been treated with 2 mg of dienogest once a day for 12 months or more at a single institute. We evaluated changes in endometriosis-associated pain and endometrioma size, recurrence rate, and adverse events following dienogest administration...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28090446/quantitative-imaging-methods-in-osteoporosis
#2
REVIEW
Ling Oei, Fjorda Koromani, Fernando Rivadeneira, M Carola Zillikens, Edwin H G Oei
Osteoporosis is characterized by a decreased bone mass and quality resulting in an increased fracture risk. Quantitative imaging methods are critical in the diagnosis and follow-up of treatment effects in osteoporosis. Prior radiographic vertebral fractures and bone mineral density (BMD) as a quantitative parameter derived from dual-energy X-ray absorptiometry (DXA) are among the strongest known predictors of future osteoporotic fractures. Therefore, current clinical decision making relies heavily on accurate assessment of these imaging features...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28089957/the-epigenetic-clock-and-physical-development-during-childhood-and-adolescence-longitudinal-analysis-from-a-uk-birth-cohort
#3
Andrew J Simpkin, Laura D Howe, Kate Tilling, Tom R Gaunt, Oliver Lyttleton, Wendy L McArdle, Susan M Ring, Steve Horvath, George Davey Smith, Caroline L Relton
BACKGROUND: Statistical models that use an individual's DNA methylation levels to estimate their age (known as epigenetic clocks) have recently been developed, with 96% correlation found between epigenetic and chronological age. We postulate that differences between estimated and actual age [age acceleration (AA)] can be used as a measure of developmental age in early life. METHODS: We obtained DNA methylation measures at three time points (birth, age 7 years and age 17 years) in 1018 children from the Avon Longitudinal Study of Parents and Children (ALSPAC)...
January 15, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28089422/low-magnitude-mechanical-signals-and-the-spine-a-review-of-current-and-future-applications
#4
REVIEW
Martin H Pham, Zorica Buser, Jeffrey C Wang, Frank L Acosta
Animal and human studies demonstrate the anabolic properties of low-magnitude mechanical stimulation (LMMS) in its ability to improve bone formation by enhancing the proliferation of mesenchymal stem cells and their subsequent commitment down an osteoblastic lineage. Response to mechanical strains as low as 10μɛ have been seen, illustrating the sensitivity of mechanosensory cells to mechanotransduction pathways. Applications to the spine include treatment of osteoporosis in preparation for instrumented fusion, fracture reduction in spinal cord injury patients to slow bone mineral density loss, and bone tissue engineering and enhancement of bone-implant osseointegration for pseudarthrosis and hardware failure...
January 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28088884/dual-raltegravir-etravirine-combination-as-maintenance-regimen-in-virologically-suppressed-hiv-1-infected-patients
#5
Leonardo Calza, Eleonora Magistrelli, Vincenzo Colangeli, Roberto Manfredi, Marco Borderi, Nicolò Rossi, Matteo Conti, Rita Mancini, Pierluigi Viale
BACKGROUND: Nucleoside reverse transcriptase inhibitor (NRTI)- and protease inhibitor (PI)-sparing antiretroviral regimens may be useful in selected HIV-infected patients with resistance or intolerance to these drug classes. METHODS: This was an observational prospective study of patients on suppressive antiretroviral therapy containing two NRTIs plus one ritonavir-boosted PI who switched to a dual regimen containing raltegravir plus etravirine. Patients were required not to have prior virological failure to raltegravir and to have efficacy of etravirine showed through the genotypic resistance assay in case of prior non-nucleoside reverse transcriptase inhibitor (NNRTI) virological failure...
January 15, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28088646/bone-microarchitecture-in-adolescent-boys-with-autism-spectrum-disorder
#6
Ann M Neumeyer, Natalia Cano Sokoloff, Erin McDonnell, Eric A Macklin, Christopher J McDougle, Madhusmita Misra
BACKGROUND: Boys with autism spectrum disorder (ASD) have lower areal bone mineral density (aBMD) than typically developing controls (TDC). Studies of volumetric BMD (vBMD) and bone microarchitecture provide information about fracture risk beyond that provided by aBMD but are currently lacking in ASD. OBJECTIVES: To assess ultradistal radius and distal tibia vBMD, bone microarchitecture and strength estimates in adolescent boys with ASD compared to TDC. DESIGN/METHODS: Cross-sectional study of 34 boys (16 ASD, 18 TDC) that assessed (i) aBMD at the whole body (WB), WB less head (WBLH), hip and spine using dual X-ray absorptiometry (DXA), (ii) vBMD and bone microarchitecture at the ultradistal radius and distal tibia using high-resolution peripheral quantitative CT (HRpQCT), and (iii) bone strength estimates (stiffness and failure load) using micro-finite element analysis (FEA)...
January 11, 2017: Bone
https://www.readbyqxmd.com/read/28087899/increasing-dietary-nitrate-has-no-effect-on-cancellous-bone-loss-or-fecal-microbiome-in-ovariectomized-rats
#7
Melissa N Conley, Cooper Roberts, Thomas J Sharpton, Urszula T Iwaniec, Norman Hord
Studies suggest diets rich in fruit and vegetables reduce bone loss, although the specific compounds responsible are unknown. Substrates for endogenous nitric oxide (NO) production, including organic nitrates and dietary nitrate, may support NO production in age-related conditions, including osteoporosis. We investigated the capability of dietary nitrate to improve NO bioavailability, reduce bone turnover and loss. Six-month-old Sprague Dawley rats [30 ovariectomized (OVX) and 10 sham-operated (sham)] were randomized into 3 groups: (1) vehicle (water) control, (2) low-dose nitrate (LDN, 0...
January 13, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28087216/denosumab-and-alendronate-treatment-in-patients-with-back-pain-due-to-fresh-osteoporotic-vertebral-fractures
#8
Tomoko Tetsunaga, Tomonori Tetsunaga, Keiichiro Nishida, Masato Tanaka, Yoshihisa Sugimoto, Tomoyuki Takigawa, Yoshitaka Takei, Toshifumi Ozaki
INTRODUCTION: Denosumab specifically inhibits the receptor activator for nuclear factor-kappa B ligand (RANKL), and prevents osteoporotic fractures. Several reports have analyzed the effects of denosumab and alendronate alone on bone mineral density (BMD) or reduction of fracture risk. The objective of this study was to analyze the effects of antiresorptive osteoporosis pharmacotherapy on pain relief in patients with fresh vertebral fracture. METHODS: This retrospective, single-center study included 80 patients (10 males, 70 females) with fresh osteoporotic vertebral fractures treated using denosumab at a dose of 60 mg subcutaneously every 6 months (40 patients) or alendronate at a dose of 35 mg orally every week (40 patients) for 6 months in our hospital...
January 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28081333/bone-mineral-density-and-growth-in-children-with-coeliac-disease-on-a-gluten-free-diet
#9
Ceyda Tuna Kırsaçlıoğlu, Zarife Kuloğlu, Aydan Tanca, Nuriye Özlem Küçük, Zehra Aycan, Gönül Öcal, Arzu Ensari, Ayhan Gazi Kalaycı, Nurten Girgin
BACKGROUND/AIM: To evaluate changes in growth and bone metabolism during consumption of a gluten-free diet (GFD) in children with coeliac disease (CD). MATERIALS AND METHODS: Thirty-seven children with CD (mean age of 8.8 ± 4.6 years, 21 girls) were enrolled. Anthropometric measurements, bone mineral density (BMD) in lumbar 2-4 vertebrae, and serum alkaline phosphatase, calcium, and phosphorus levels at diagnosis and at follow-up were recorded. RESULTS: The mean follow-up period was 3...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079799/risk-factors-for-recollapse-of-the-augmented-vertebrae-after-percutaneous-vertebroplasty-for-osteoporotic-vertebral-fractures-with-intravertebral-vacuum-cleft
#10
Weibo Yu, De Liang, Zhensong Yao, Ting Qiu, Linqiang Ye, Xuecheng Huang, Xiaobing Jiang
To determine risk factors related to recollapse of the augmented vertebrae after percutaneous vertebroplasty (PVP) for osteoporotic vertebral compression fractures (OVCFs) with intravertebral vacuum cleft (IVC).Fifty-two patients treated with PVP for single OVCFs with the IVC were retrospectively reviewed. The follow-up period was at least 2 years. Vertebral height loss ≥15% or kyphotic angle ≥10° at the final follow-up in relation to the immediately postoperative values were adopted as a definition of recollapse of the augmented vertebrae...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079119/interleukin-32-gamma-stimulates-bone-formation-by-increasing-mir-29a-in-osteoblastic-cells-and-prevents-the-development-of-osteoporosis
#11
Eun-Jin Lee, Sang-Min Kim, Bongkun Choi, Eun-Young Kim, Yeon-Ho Chung, Eun-Ju Lee, Bin Yoo, Chang-Keun Lee, Seokchan Hong, Beom-Jun Kim, Jung-Min Koh, Soo-Hyun Kim, Yong-Gil Kim, Eun-Ju Chang
Interleukin-32 gamma (IL-32γ) is a recently discovered cytokine that is elevated in inflamed tissues and contributes to pathogenic features of bone in human inflammatory rheumatic diseases. Nevertheless, the role of IL-32γ and its direct involvement in bone metabolism is unclear. We investigated the molecular mechanism of IL-32γ in bone remodeling and the hypothetical correlation between IL-32γ and disease activity in osteoporosis patients. Transgenic (TG) mice overexpressing human IL-32γ showed reduced bone loss with advancing age, increased bone formation, and high osteogenic capacity of osteoblast compared to wild-type (WT) mice through the upregulation of miR-29a, which caused a reduction of Dickkopf-1 (DKK1) expression...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078791/effects-of-stem-cell-transplantation-on-bone-mineral-density-and-vitamin-d-status-in-children-with-thalassemia-major
#12
Dilek Gürlek Gökçebay, Namik Ozbek, Arzu Yazal Erdem, Vildan Culha, Nese Yarali, Pamir Isik, Zekai Avci, Fatih Azik, Fatma Demirel, Bahattin Tunc
HSCT is a curative treatment in TM, but conditioning and immunosuppressive treatment may affect bone metabolism. In this retrospective study, we aimed to compare BMD, vitamin D status, and growth in children with TM who underwent HSCT to those in children with TD TM. Twenty-three children with TM who underwent HSCT (mean age 7.1 years [1.03-14.7]) and 24 children with TD thalassemia (mean age 9.8 years [1.6-14]) were recruited. Lumbar spine BMD of TD thalassemia patients was higher than those in patients who had HSCT at both baseline and second-year assessments (P=...
January 12, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28078366/genetic-screening-of-wnt4-and-wnt5b-in-two-populations-with-deviating-bone-mineral-densities
#13
Gretl Hendrickx, Eveline Boudin, Ellen Steenackers, Torben Leo Nielsen, Marianne Andersen, Kim Brixen, Wim Van Hul
A role for WNT4 and WNT5B in bone metabolism was indicated by genome-wide association studies (GWAS) and a Wnt4 knockout mouse model. The aim of this study was therefore to replicate and further investigate the causality between genetic variation in WNT4 and WNT5B and deviating bone mineral density (BMD) values. A WNT4 and WNT5B mutation screening was performed in patients with craniotubular hyperostosis using Sanger sequencing. Here, no putative causal mutations were detected. Moreover, a high and low BMD cohort was selected from the Odense Androgen Study population for re-sequencing...
January 12, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28077497/bone-material-strength-index-as-measured-by-impact-microindentation-is-altered-in-patients-with-acromegaly
#14
Frank Malgo, Neveen Hamdy, Ton J Rabelink, H Kroon, Kim M J A Claessen, Alberto M Pereira, N R Biermasz, Natasha M Appelman-Dijkstra
OBJECTIVE: Acromegaly is a rare disease caused by excess growth hormone (GH) production by a pituitary adenoma. The skeletal complications of GH and IGF-1 excess include increased bone turnover, increased cortical bone mass and deteriorated microarchitecture of trabecular bone, associated with a high risk of vertebral fractures in the presence of relatively normal Bone Mineral Density (BMD). We aimed to evaluate tissue-level properties of bone using impact microindentation (IMI) in well-controlled patients with acromegaly aged ≥18 years compared to 44 controls from the outpatient clinic of the Centre for Bone Quality...
January 11, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28077378/peripheral-skeleton-bone-strength-is-positively-correlated-with-total-and-dairy-protein-intakes-in-healthy-postmenopausal-women
#15
Claire Durosier-Izart, Emmanuel Biver, Fanny Merminod, Bert van Rietbergen, Thierry Chevalley, François R Herrmann, Serge L Ferrari, René Rizzoli
BACKGROUND: Bone mineral content (BMC) and bone mineral density (BMD) are positively correlated with dietary protein intakes, which account for 1-8% of BMC and BMD variances. However, the relation between bone strength and microstructure, which are variables that are not captured by areal bone mineral density (aBMD), and dietary protein intakes, particularly from specific dietary sources, has not been clearly established. OBJECTIVE: We investigated the association between the peripheral skeleton-predicted failure load and stiffness, bone microstructure, and dietary protein intakes from various origins (animal, divided into dairy and nondairy, and vegetable origins) in healthy postmenopausal women...
January 11, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28077016/bone-mineral-density-is-close-to-normal-for-age-in-long-term-lymphoma-survivors-treated-with-high-dose-therapy-with-autologous-stem-cell-transplantation
#16
Mette Seland, Knut B Smeland, Trine Bjøro, Ragnhild S Falk, Sophie D Fosså, Clara G Gjesdal, Kristin Godang, Harald Holte, Johan Svartberg, Unni Syversen, Jens Bollerslev, Cecilie E Kiserud
BACKGROUND: Few studies have assessed bone health in lymphoma survivors treated with high-dose therapy with autologous stem cell transplantation (HDT-ASCT). Therefore, we aimed to assess bone mineral density (BMD) at six different skeletal sites and to investigate associations between clinical factors and BMD in these survivors. MATERIAL AND METHODS: Eligible lymphoma survivors were aged ≥18 years at diagnosis and at HDT-ASCT given between 1987 and 2008. Participants responded to questionnaires, blood samples were drawn, and a dual energy X-ray absorptiometry (DXA) was performed...
January 12, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28074252/high-dietary-sodium-intake-is-associated-with-low-bone-mass-in-postmenopausal-women-korea-national-health-and-nutrition-examination-survey-2008-2011
#17
S-J Kwon, Y-C Ha, Y Park
: The present cross-sectional study performed using data from the Korea National Health and Nutrition Examination Survey in 9526 women older than 18 years of age demonstrates that high sodium intake is associated with lower bone mineral density and sodium intake ≥2000 mg/day is a risk factor for osteoporosis in postmenopausal women. INTRODUCTION: Several studies have reported that large amount of dietary sodium intake is highly associated with elevated urinary calcium...
January 10, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28074251/hyponatremia-and-fractures-should-hyponatremia-be-further-studied-as-a-potential-biochemical-risk-factor-to-be-included-in-frax-algorithms
#18
REVIEW
J C Ayus, T Bellido, A L Negri
The Fracture Risk Assessment Tool (FRAX®) was developed by the WHO Collaborating Centre for metabolic bone diseases to evaluate fracture risk of patients. It is based on patient models that integrate the risk associated with clinical variables and bone mineral density (BMD) at the femoral neck. The clinical risk factors included in FRAX were chosen to include only well-established and independent variables related to skeletal fracture risk. The FRAX tool has acquired worldwide acceptance despite having several limitations...
January 10, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28073368/advanced-knee-structure-analysis-aksa-a-comparison-of-bone-mineral-density-and-trabecular-texture-measurements-using-computed-tomography-and-high-resolution-peripheral-quantitative-computed-tomography-of-human-knee-cadavers
#19
Torsten Lowitz, Oleg Museyko, Valérie Bousson, Christine Chappard, Liess Laouisset, Jean-Denis Laredo, Klaus Engelke
BACKGROUND: A change of loading conditions in the knee causes changes in the subchondral bone and may be a cause of osteoarthritis (OA). However, quantification of trabecular architecture in vivo is difficult due to the limiting spatial resolution of the imaging equipment; one approach is the use of texture parameters. In previous studies, we have used digital models to simulate changes of subchondral bone architecture under OA progression. One major result was that, using computed tomography (CT) images, subchondral bone mineral density (BMD) in combination with anisotropy and global homogeneity could characterize this progression...
January 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28072794/does-percutaneous-vertebroplasty-or-balloon-kyphoplasty-for-osteoporotic-vertebral-compression-fractures-increase-the-incidence-of-new-vertebral-fractures-a-meta-analysis
#20
Hui Zhang, Caiyuan Xu, Tongxing Zhang, Zhongyu Gao, Tao Zhang
BACKGROUND: Because of an aging population,osteoporotic vertebral fractures are becoming more frequent.Conservative therapy was considered the gold standard for treating osteoporotic vertebral compression fractures (OVCFs) in the past. Percutaneous vertebroplasty (PVP) or balloon kyphoplasty (BKP) as minimally invasive techniques are new treatments that are widely used for painful OVCFs. However, an increase in new vertebral compression fractures at non-treated levels following augmentation is of concern...
January 2017: Pain Physician
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