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Journal of Bone and Mineral Metabolism

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https://www.readbyqxmd.com/read/28681148/effects-of-denosumab-treatment-on-bone-mineral-density-and-joint-destruction-in-patients-with-rheumatoid-arthritis
#1
Takeshi Mochizuki, Koichiro Yano, Katsunori Ikari, Kosei Kawakami, Ryo Hiroshima, Naoko Koenuma, Mina Ishibashi, Shigeki Momohara
We aimed to investigate the efficacy of denosumab for rheumatoid arthritis (RA). This study enrolled 70 RA patients who received denosumab 60 mg subcutaneous injection at baseline and at 6 months. Bone mineral densities (BMD) of the lumbar spine, total hip, femoral neck, and hand were measured by dual energy X-ray absorptiometry. Changes in total modified Sharp score (mTSS), erosion (EN) score, and joint space narrowing score at baseline from 12 months before and at 12 months from baseline. The mean values of BMD of the lumbar spine, total hip, femoral neck, and hand significantly increased by 7...
July 5, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28681147/therapeutic-effect-of-icariin-combined-with-stem-cells-on-postmenopausal-osteoporosis-in-rats
#2
Dao Tang, Cuiling Ju, Yanjie Liu, Fei Xu, Zhengguang Wang, Dongbo Wang
Osteoporosis is characterized by skeletal fragility and microarchitectural deterioration. The side effects of drugs to treat osteoporosis will negatively affect the health of patients. This study aimed to investigate the therapeutic effects of icariin combined with adipose-derived stem cells on osteoporosis in a postmenopausal osteoporosis model after ovariectomy in rats. After ovariectomy the rats were treated with icariin combined with adipose-derived stem cell transplantation. The levels of alkaline phosphatase, tartrate-resistant acid phosphatase, osteoprotegerin, and bone γ-carboxyglutamate protein in serum were determined by ELISA...
July 5, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28664247/association-between-leg-bowing-and-serum-alkaline-phosphatase-level-regardless-of-the-presence-of-a-radiographic-growth-plate-abnormality-in-pediatric-patients-with-genu-varum
#3
Yuko Sakamoto, Muneaki Ishijima, Mayuko Kinoshita, Lizu Liu, Mitsuyoshi Suzuki, Sung-Gon Kim, Koichi Kamata, Akifumi Tokita, Haruka Kaneko, Toshiaki Shimizu, Kazuo Kaneko, Masahiko Nozawa
When children around 2 years of age show leg bowing and diseases are ruled out based on radiographic findings without conducting blood tests, they are classified as "physiologic" genu varum. Since whether or not physiologic genu varum is associated with bone metabolism is unclear, this study was conducted to clarify the association between genu varum and bone metabolism in children. Thirty-five pediatric patients with genu varm who visited our out-patient clinic were enrolled. While two of the 35 children had nutritional rickets, showing abnormalities on both blood test (ALP, ≥1000 IU/L; iPTH, >65 pg/mL and 25(OH)D, ≤20 ng/mL) and radiographs (such as cupping, fraying or splaying), five of 35 children showed abnormalities on blood tests but not radiographs...
June 29, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28660377/local-administration-of-wp9qy-w9-peptide-promotes-bone-formation-in-a-rat-femur-delayed-union-model
#4
Mikiya Sawa, Shigeyuki Wakitani, Naosuke Kamei, Shinji Kotaka, Nobuo Adachi, Mitsuo Ochi
The WP9QY peptide (W9) consists of nine amino acids. It binds to RANKL and blocks RANKL-induced increases in bone resorption and osteoclastogenesis. W9 has a unique effect on the coupling mechanism between osteoclasts and osteoblasts, which promotes bone formation while working to suppress bone resorption. In this study, with the aim of clinical application of W9 for fracture treatment, we aimed to clarify the bone repair-promoting effect of W9 when administered locally to a rat femur model of delayed union...
June 28, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28660376/bone-metabolism-markers-and-angiogenic-cytokines-as-regulators-of-human-hematopoietic-stem-cell-mobilization
#5
Pantelis Tsirkinidis, Evangelos Terpos, Georgios Boutsikas, Athanasios Papatheodorou, Konstantinos Anargyrou, Eleni Lalou, Aglaia Dimitrakopoulou, Christina Kalpadakis, Konstantinos Konstantopoulos, Marina Siakantaris, Panayiotis Panayiotidis, Gerassimos Pangalis, Marie-Christine Kyrtsonis, Theodoros Vassilakopoulos, Maria K Angelopoulou
Hematopoietic stem cell (HSC) mobilization involves cleavage of ligands between HSC and niche components. However, there are scarce data regarding the role of bone cells in human HSC mobilization. We studied biochemical markers of bone metabolism and angiogenic cytokines during HSC mobilization in 46 patients' sera with lymphoma and multiple myeloma, by ELISA. Significant changes between pre-mobilization and collection samples were found: (1) Bone alkaline phosphatase (BALP) increased, indicating augmentation of bone formation; (2) Receptor activator of Nf-κB ligand/osteoprotegerin ratio (RANKL/OPG) increased, showing osteoclastic differentiation and survival; however, there was no evidence of increased osteoclastic activity; and (3) Angiopoietin-1/Angiopoietin-2 ratio (ANGP-1/ANGP-2) decreased, consistent with vessel destabilization...
June 28, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28647818/assessment-of-the-effect-of-systemic-delivery-of-sclerostin-antibodies-on-wnt-signaling-in-distraction-osteogenesis
#6
Mohammad M Alzahrani, Asim M Makhdom, Frank Rauch, Dominique Lauzier, Maria Kotsiopriftis, Saber Ghadakzadeh, Reggie C Hamdy
Sclerostin is a known inhibitor of the Wnt signaling pathway which is involved in osteogenesis and, when inactivated, stimulates bone formation. To our knowledge, this effect has not been studied in the context of distraction osteogenesis (DO). Tibial DO was conducted on a total of 24 wild-type mice, which were then divided into 2 groups-a saline injection group (control) and an anti-sclerostin (Scl-Ab) injection group (treatment). The mice in the treatment group received 100 mg/kg intravenous injections of the antibody weekly until killing...
June 24, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28642975/association-of-bone-metabolism-markers-with-coronary-atherosclerosis-and-coronary-artery-disease-in-postmenopausal-women
#7
Yan Ling, Zhen Wang, Bingjie Wu, Xin Gao
This study aimed to evaluate the association of bone metabolism markers with coronary atherosclerosis and coronary artery disease (CAD) in postmenopausal women. Based on the findings of coronary angiography, 111 women with CAD and 116 women without CAD were recruited. Serum calcium, phosphate, parathyroid hormone (PTH), 25-hydroxyvitamin D (25OHD), osteocalcin, N-terminal propeptide of type I procollagen (P1NP) and C-terminal cross-linked telopeptide of type I collagen (CTX) were measured. The Gensini score was used to assess the severity of coronary atherosclerosis...
June 22, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28642974/abdominal-aortic-calcification-and-the-risk-of-bone-fractures-a-meta-analysis-of-prospective-cohort-studies
#8
Dailin Wei, Guanlin Zheng, Yun Gao, Jinying Guo, Tie Zhang
The relationship between abdominal aortic calcification (AAC) and bone fracture has been examined by some observational studies, but the results remain discordant. Therefore, we aimed to assess the link between them by conducting a meta-analysis of prospective studies. Relevant studies were identified by searching PubMed and EMBASE databases until the end of December 2016. Summary relative risks (RRs) and 95% confidence intervals (CIs) for associations between AAC and fracture risk were estimated with fixed- or random- effects models...
June 22, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28616752/effects-of-c-myc-gene-silencing-on-interleukin-1%C3%AE-induced-rat-chondrocyte-cell-proliferation-apoptosis-and-cytokine-expression
#9
Jian Zou, Xiao-Lin Li, Zhong-Min Shi, Jian-Feng Xue
This study explores the effects of C-myc gene silencing on cell proliferation, apoptosis and cytokine expression in interleukin (IL)-1β-induced rat chondrocytes. Primary chondrocytes were obtained from 40 Sprague-Dawley rats. For in vitro C-myc3-shRNA transfection, chondrocytes were assigned to a blank 1, model 1, IL-1β + C-myc3-shRNA, C-myc3-shRNA, (IL-1β + C-myc3-shRNA) + C-myc overexpression, C-myc3-shRNA + C-myc overexpression or IL-1β + C-myc-Con group. Western blotting and quantitative real-time polymerase chain reaction (qRT-PCR) were performed to detect C-myc, PCNA and cyclin D1 mRNA and protein expression...
June 14, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28589412/serum-ctx-levels-and-histomorphometric-analysis-in-src-versus-rankl-knockout-mice
#10
Sunao Takeshita, Toshio Fumoto, Masako Ito, Kyoji Ikeda
Src knockout (KO) and RANKL KO mice both exhibit near complete osteopetrosis in terms of 3D-bone volume (BV) fraction by micro-CT, whereas the serum CTX concentration of Src KO is apparently normal and that of RANKL KO is 30% of wild-type (WT) despite the fact that they lack osteoclasts. By histomorphometry we found that, whereas eroded surface (ES) and osteoid surface (OS) are zero values in RANKL KO, they are indistinguishable from WT in Src KO; because of marked increase in bone surface (BS), ES/BS and OS/BS of Src KO are 30-40% of WT...
June 6, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28589411/accelerated-osteogenic-differentiation-of-human-bone-derived-cells-in-ankylosing-spondylitis
#11
Sungsin Jo, Suman Kang, Jinil Han, Seung Hyun Choi, Ye-Soo Park, Il-Hoon Sung, Tae-Hwan Kim
Ankylosing spondylitis (AS) is characterized by excessive bone formation with syndesmophytes, leading to bony ankylosis. The contribution of osteoblasts to the pathogenesis of ankylosis is poorly understood. The aim of this study was to determine molecular differences between disease controls (Ct) and AS bone-derived cells (BdCs) during osteogenic differentiation with or without inflammation using AS patient serum. We confirmed osteoblastic differentiation of Ct and AS BdCs under osteogenic medium by observing morphological changes and measuring osteoblastic differentiation markers...
June 6, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28589410/computational-segmentation-of-collagen-fibers-in-bone-matrix-indicates-bone-quality-in-ovariectomized-rat-spine
#12
Diaa Eldin S Daghma, Deeksha Malhan, Paul Simon, Sabine Stötzel, Stefanie Kern, Fathi Hassan, Katrin Susanne Lips, Christian Heiss, Thaqif El Khassawna
Bone loss varies according to disease and age and these variations affect bone cells and extracellular matrix. Osteoporosis rat models are widely investigated to assess mechanical and structural properties of bone; however, bone matrix proteins and their discrepant regulation of diseased and aged bone are often overlooked. The current study considered the spine matrix properties of ovariectomized rats (OVX) against control rats (Sham) at 16 months of age. Diseased bone showed less compact structure with inhomogeneous distribution of type 1 collagen (Col1) and changes in osteocyte morphology...
June 6, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28580516/indian-girls-have-higher-bone-mineral-content-per-unit-of-lean-body-than-boys-through-puberty
#13
Anuradha V Khadilkar, Neha Sanwalka, M Zulf Mughal, Shashi Chiplonkar, Vaman Khadilkar
Our aim is to describe changes in the muscle-bone unit assessed as a ratio of bone mineral content (BMC) to lean body mass (LBM) through puberty at total body and various skeletal sites in Indian boys and girls. A cross-sectional study was conducted (888 children, 480 boys, aged 5-17 years) in Pune, India. Pubertal staging was assessed. BMC, LBM and fat percentage at the arms, legs, android, gynoid and total body (less the head) were assessed by dual energy X-ray absorptiometry. The amount of BMC per unit LBM (BMC/LBM) was computed...
June 3, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28528406/responsiveness-to-pamidronate-treatment-is-not-related-to-the-genotype-of-type-i-collagen-in-patients-with-osteogenesis-imperfecta
#14
Junko Kanno, Akiko Saito-Hakoda, Shigeo Kure, Ikuma Fujiwara
Osteogenesis imperfecta (OI) is a heritable disorder characterized by increased bone fragility, low bone mass, dentinogenesis imperfecta, and blue sclerae. Most patients with OI have a mutation in either COL1A1 or COL1A2, which encode type I collagen. We screened these genes in Japanese patients with OI and compared their genotype and phenotype, focusing on the clinical response to treatment with pamidronate. Sequencing analysis of the genes in 19 families revealed 15 mutations, of which ten were missense mutations, thee were nonsense mutations, and two were frameshift mutations...
May 20, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28516219/decreased-sensory-nerve-excitation-and-bone-pain-associated-with-mouse-lewis-lung-cancer-in-trpv1-deficient-mice
#15
Hiroki Wakabayashi, Satoshi Wakisaka, Toru Hiraga, Kenji Hata, Riko Nishimura, Makoto Tominaga, Toshiyuki Yoneda
Bone pain is one of the most common and life-limiting complications of cancer metastasis to bone. Although the mechanism of bone pain still remains poorly understood, bone pain is evoked as a consequence of sensitization and excitation of sensory nerves (SNs) innervating bone by noxious stimuli produced in the microenvironment of bone metastases. We showed that bone is innervated by calcitonin gene-related protein (CGRP)(+) SNs extending from dorsal root ganglia (DRG), the cell body of SNs, in mice. Mice intratibially injected with Lewis lung cancer (LLC) cells showed progressive bone pain evaluated by mechanical allodynia and flinching with increased CGRP(+) SNs in bone and augmented SN excitation in DRG as indicated by elevated numbers of pERK- and pCREB-immunoreactive neurons...
May 17, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28516218/a-high-fat-diet-can-affect-bone-healing-in-growing-rats
#16
Jéssica Suzuki Yamanaka, Gabriela Rezende Yanagihara, Bruna Leonel Carlos, Júnia Ramos, Brígida Batista Brancaleon, Ana Paula Macedo, João Paulo Mardegan Issa, Antônio Carlos Shimano
A high-fat diet (HFD) can have a negative effect on bone quality in young and old people. Although bone healing in children is normally efficient, there is no evidence that children who have a diet rich in fat have compromised bone fracture regeneration compared with children with recommended dietary fat levels. The purpose of the present study was to evaluate the effects of an HFD on bone healing in growing female rats. Twenty-six postweaning female Wistar rats were divided into two groups (13 animals per group): a standard diet (SD) group and an HFD (with 60% of energy from fat) group...
May 17, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/27628044/genetic-admixture-and-body-composition-in-puerto-rican-adults-from-the-boston-puerto-rican-osteoporosis-study
#17
Sabrina E Noel, Sandra Arevalo, Caren E Smith, Chao-Qiang Lai, Bess Dawson-Hughes, Jose M Ordovas, Katherine L Tucker
Population admixture plays a role in the risk of chronic conditions that are related to body composition; however, our understanding of these associations in Puerto Ricans, a population characterized by multiple ancestries, is limited. This study investigated the relationship between genetic admixture and body composition in 652 Puerto Ricans from the Boston Puerto Rican Osteoporosis Study. Genetic ancestry was estimated from 100 ancestry-informative markers. Body composition measures were obtained from dual-energy X-ray absorptiometry...
July 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28389933/effect-of-radiation-dose-reduction-on-texture-measures-of-trabecular-bone-microstructure-an-in-vitro-study
#18
Muthu Rama Krishnan Mookiah, Thomas Baum, Kai Mei, Felix K Kopp, Georg Kaissis, Peter Foehr, Peter B Noel, Jan S Kirschke, Karupppasamy Subburaj
Osteoporosis is characterized by bone loss and degradation of bone microstructure leading to fracture particularly in elderly people. Osteoporotic bone degeneration and fracture risk can be assessed by bone mineral density and trabecular bone score from 2D projection dual-energy X-ray absorptiometry images. However, multidetector computed tomography image based quantification of trabecular bone microstructure showed significant improvement in prediction of fracture risk beyond that from bone mineral density and trabecular bone score; however, high radiation exposure limits its use in routine clinical in vivo examinations...
April 7, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28389932/monthly-oral-ibandronate-100%C3%A2-mg-is-as-effective-as-monthly-intravenous-ibandronate-1%C3%A2-mg-in-patients-with-various-pathologies-in-the-movest-study
#19
Hiroshi Hagino, Masako Ito, Junko Hashimoto, Masao Yamamoto, Koichi Endo, Kyoko Katsumata, Yoshihiro Asao, Rumiko Matsumoto, Tetsuo Nakano, Hideki Mizunuma, Toshitaka Nakamura
The non-inferiority of oral ibandronate 100 mg to intravenous (i.v.) ibandronate 1 mg in increasing lumbar spine (LS) bone mineral density (BMD) after 12 months of treatment was demonstrated in the randomized, phase III MOVEST study. We conducted subgroup analyses in the per-protocol set of the study (n = 183 oral ibandronate; n = 189 i.v. ibandronate). In patients with LS BMD T score ≥ -3.0 or < -3.0 at screening, LS BMD gains from baseline were 4.42 and 5.79%, respectively, with oral ibandronate, and 4...
April 7, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28389931/physicochemical-characterization-of-mineral-deposits-in-human-ligamenta-flava
#20
Sylwia Orzechowska, Andrzej Wróbel, Marcin Kozieł, Wiesław Łasocha, Eugeniusz Rokita
The aim of our study was the detailed characterization of calcium deposits in ligamenta flava. The use of microcomputed tomography allowed extending the routine medical investigations to characterize mineral grains in the microscopic scale. A possible connection between spinal stenosis and ligament mineralization was investigated. The studies were carried out on 24 surgically removed ligamentum flavum samples divided into control and stenosis groups. Physicochemical characterization of the inorganic material was performed using X-ray fluorescence, X-ray diffraction, and Fourier transform infrared spectroscopy...
April 7, 2017: Journal of Bone and Mineral Metabolism
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