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https://www.readbyqxmd.com/read/29679630/high-irisin-levels-are-associated-with-better-glycemic-control-and-bone-health-in-children-with-type-1-diabetes
#1
Maria Felicia Faienza, Giacomina Brunetti, Lorenzo Sanesi, Graziana Colaianni, Monica Celi, Laura Piacente, Gabriele D'Amato, Ernestina Schipani, Silvia Colucci, Maria Grano
AIM: Irisin is a new peptide produced mainly by the skeletal muscle playing an important role both in glucose/energy homeostasis and bone metabolism. Childhood type 1 diabetes mellitus (T1DM) is associated with decreased bone mass. We aimed to evaluate irisin levels in TD1M children and their correlation with bone metabolism and glycaemic control. METHODS: Ninety-six T1DM subjects (12.2 ± 4 years), 56 on multiple daily injections (MDI), 40 on continuous subcutaneous insulin infusion (CSII), and 34 controls were included in the study...
April 18, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29677404/hybrid-scaffolds-of-mg-alloy-mesh-reinforced-polymer-extracellular-matrix-composite-for-critical-sized-calvarial-defect-reconstruction
#2
Yingqi Chen, Sang-Ho Ye, Hideyoshi Sato, Yang Zhu, Vesselin Shanov, Tarannum Tiasha, Antonio D'Amore, Samuel Luketich, Guojiang Wan, William R Wagner
The challenge of developing scaffolds to reconstruct critical-sized calvarial defects without the addition of high levels of exogenous growth factor remains relevant. Both osteogenic regenerative efficacy as well as suitable mechanical properties for the temporary scaffold system are of importance. In this study, a Mg alloy mesh reinforced polymer/demineralized bone matrix (DBM) hybrid scaffold was designed where the hybrid scaffold was fabricated by a concurrent electrospinning/electrospraying of poly(lactic-co-glycolic) (PLGA) polymer and DBM suspended in hyaluronic acid (HA)...
April 20, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29677036/coupled-opg-fc-on-decellularized-aortic-valves-by-edc-nhs-attenuates-rat-mscs-calcification-in-vitro
#3
Qiao Zhang, Si Chen, Jiawei Shi, Fei Li, Xucong Shi, Xingjian Hu, Cheng Deng, Feng Shi, Guichun Han, Nianguo Dong
Valve calcification commonly damages natural human heart valves and tissue-engineered heart valves (TEHVs), and no ideal intervention is available in clinical practice. It is increasingly considered that osteoprotegerin (OPG) inhibits vascular calcification. We aimed to explore whether free OPG-Fc fusion protein or coupled OPG-Fc on decellularized aortic valves attenuates calcification. Calcification of rat bone marrow-derived mesenchymal stromal cells (MSCs) was induced by osteogenic differentiation media, and the effects of free OPG-Fc or OPG-Fc coupled on the decellularized porcine aortic heart valve leaflet scaffolds by coupling agents 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC)/N-hydroxysuccinimide (NHS) on calcification were observed...
April 18, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29674645/long-noncoding-rna-tug1-facilitates-osteogenic-differentiation-of-periodontal-ligament-stem-cells-via-interacting-with-lin28a
#4
Qin He, Shuangyan Yang, Xiuge Gu, Mengying Li, Chunling Wang, Fulan Wei
Periodontal ligament stem cells (PDLSCs) are mesenchymal stem cells derived from dental tissues with multidirectional differentiation potential and excellent self-renewing ability. Recently, long noncoding RNAs (lncRNAs) have been shown to play important roles in MSC osteogenic differentiation. In this study, we found that taurine upregulated gene 1 (TUG1), an evolutionarily conserved and widely present lncRNA was significantly upregulated in osteogenically induced PDLSCs compared to their undifferentiated counterparts...
April 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29674281/effects-of-tocotrienol-from-bixa-orellana-annatto-on-bone-histomorphometry-in-a-male-osteoporosis-model-induced-by-buserelin
#5
Nur-Vaizura Mohamad, Ima-Nirwana Soelaiman, Kok-Yong Chin
INTRODUCTION: Osteoporosis is a debilitating skeletal side effect of androgen deprivation therapy based on gonadotropin-releasing hormone (GnRH) agonist in men. Tocotrienol from Bixa orellana (annatto) has been demonstrated to offer protection against osteoporosis by exerting anabolic effects on bone. Thus, it may prevent osteoporosis among GnRH agonist users. OBJECTIVE: This study aimed to determine the effectiveness of annatto-tocotrienol on the bone turnover markers and bone histomorphometry in a model of male osteoporosis induced by buserelin (a GnRH agonist)...
April 16, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29669167/scoliosis-in-fibrous-dysplasia-mccune-albright-syndrome-factors-associated-with-curve-progression-and-effects-of-bisphosphonates
#6
Jason A Berglund, Sri Harsha Tella, Kaitlyn F Tuthill, Lauren Kim, Lori C Guthrie, Scott M Paul, Robert Stanton, Michael T Collins, Alison M Boyce
BACKGROUND: Scoliosis is a complication of fibrous dysplasia/McCune-Albright syndrome (FD/MAS), however risk factors and long-term outcomes are unknown. Bisphosphonates are commonly used; however, it is unknown whether their use decrease the risk of progressive scoliosis. METHODS: Clinical data from the NIH cohort study was reviewed. Cobb angles were measured, and variables associated with scoliosis progression were identified. RESULTS: Of 138 subjects with available radiographs, 84 (61%) had scoliosis, including 55 (65%) classified as mild (Cobb angle >10 to ≤30°), 11 (13%) as moderate (>30 to ≤45°), and 18 (22%) as severe (>45°)...
April 18, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29667269/effects-of-bmp-2-on-the-osteogenic-differentiation-of-bone-marrow-stem-cells-in-fibrous-dysplasia
#7
Soyoun Um, Hui Young Kim, Byoung-Moo Seo
OBJECTIVES: The purpose of this study was to evaluate the effects of BMP-2 on bone-grafting procedures for treatment of fibrous dysplasia based on in vitro and in vivo experiments. SUBJECTS AND METHODS: Proliferation of stem cells was determined by colony-forming assay, CCK-8 assay, and BrdU staining. OCT4 and NANOG expression was analyzed by flow cytometry and immunocytochemistry. Osteogenic differentiation was assessed by measuring ALP activity, alizarin red S staining, and in vivo transplantation...
April 18, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29667027/neonatal-overfeeding-impairs-differentiation-potential-of-mice-subcutaneous-adipose-mesenchymal-stem-cells
#8
Isabelle Dias, Ísis Salviano, André Mencalha, Simone Nunes de Carvalho, Alessandra Alves Thole, Laís Carvalho, Erika Cortez, Ana Carolina Stumbo
Nutritional changes in the development (intrauterine life and postnatal period) may trigger long-term pathophysiological complications such as obesity and cardiovascular disease. Metabolic programming leads to organs and tissues modifications, including adipose tissue, with increased lipogenesis, production of inflammatory cytokines, and decreased glucose uptake. However, stem cells participation in adipose tissue dysfunctions triggered by overfeeding during lactation has not been elucidated. Therefore, this study was the first to evaluate the effect of metabolic programming on adipose mesenchymal stem cells (ASC) from mice submitted to overfeeding during lactation, using the litter reduction model...
April 17, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29665811/recombinant-mouse-periostin-ameliorates-coronal-sutures-fusion-in-twist1-mice
#9
Shanshan Bai, Dong Li, Liang Xu, Huichuan Duan, Jie Yuan, Min Wei
BACKGROUND: Saethre-Chotzen syndrome is an autosomal dominantly inherited disorder caused by mutations in the twist family basic helix-loop-helix transcription factor 1 (TWIST1) gene. Surgical procedures are frequently required to reduce morphological and functional defects in patients with Saethre-Chotzen syndrome. Therefore, the development of noninvasive procedures to treat Saethre-Chotzen syndrome is critical. We identified that periostin, which is an extracellular matrix protein that plays an important role in both bone and connective tissues, is downregulated in craniosynostosis patients...
April 17, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29663373/nampt-expression-in-osteoblasts-controls-osteoclast-recruitment-in-alveolar-bone-remodeling
#10
Bassam Hassan, Brigitte Baroukh, Annie Llorens, Julie Lesieur, Sandy Ribbes, Catherine Chaussain, Jean-Louis Saffar, Marjolaine Gosset
In bone remodeling, osteoclasts are recruited via increased production of RANKL (receptor activator of nuclear factor-κB ligand) and migrate to the bone surface, aided by matrix metalloproteinases (MMPs). NAMPT (nicotinamide phosphoribosyl transferase), which catalyzes the rate-limiting step in the NAD+ salvage pathway, increases during in vitro osteogenic differentiation and inhibits RANKL-induced osteoclast differentiation. Alveolar bone loss, due to disturbance of the remodeling process, is a major feature of periodontitis...
April 16, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29662787/steroid-associated-osteonecrosis-animal-model-in-rats
#11
Li-Zhen Zheng, Jia-Li Wang, Ling Kong, Le Huang, Li Tian, Qian-Qian Pang, Xin-Luan Wang, Ling Qin
Objective: Established preclinical disease models are essential for not only studying aetiology and/or pathophysiology of the relevant diseases but more importantly also for testing prevention and/or treatment concept(s). The present study proposed and established a detailed induction and assessment protocol for a unique and cost-effective preclinical steroid-associated osteonecrosis (SAON) in rats with pulsed injections of lipopolysaccharide (LPS) and methylprednisolone (MPS). Methods: Sixteen 24-week-old male Sprague-Dawley rats were used to induce SAON by one intravenous injection of LPS (0...
April 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29662759/investigation-of-bioeffects-of-g-protein-coupled-receptor-1-on-bone-turnover-in-male-mice
#12
Jian Li, Liang Xiang, Xiaotong Jiang, Bin Teng, Yutao Sun, Guanlian Chen, Jie Chen, Jian V Zhang, Pei-Gen Ren
Maintenance of healthy bone quality and quantity requires a well-coordinated balance between bone formation by osteoblasts and bone resorption by osteoclasts. Chemerin is a novel adipokine with known functions such as regulating immunity and energy homeostasis through activation of chemokine-like receptor 1 (CMKLR1). G protein-coupled receptor 1 (GPR1) is the second mammalian chemerin receptor with similar binding affinity as CMKLR1. In male GPR1-/- mice, a phenotype with significantly low bone mineral density was observed...
July 2017: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29661104/effect-of-micro-roughening-of-poly-ether-ether-ketone-on-bone-marrow-derived-stem-cell-and-macrophage-responses-and-osseointegration
#13
Sunarso, Akira Tsuchiya, Naoyuki Fukuda, Riki Toita, Kanji Tsuru, Kunio Ishikawa
Poly(ether ether ketone) (PEEK) has emerged as a candidate to replace metal implants because of its satisfactory mechanical properties, radiolucency, and lack of metal allergy. However, PEEK lacks osseointegration ability limiting its clinical applications. To overcome this problem, we prepared PEEK with a micro-rough surface using the sandblast method to modulate its osseointegration property; the sandblast method is simple, cost-effective, and is already applied to clinical metal implants. The surface roughness of the sandblasted PEEK was about 2...
April 16, 2018: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29659051/psa-alpha-2-macroglobulin-complex-is-enzymatically-active-in-the-serum-of-patients-with-advanced-prostate-cancer-and-can-degrade-circulating-peptide-hormones
#14
Maya B Kostova, William Nathaniel Brennen, David Lopez, Lizamma Anthony, Hao Wang, Elizabeth Platz, Samuel R Denmeade
BACKGROUND: Prostate cancer cells produce high levels of the serine protease Prostate-Specific Antigen (PSA). PSA is enzymatically active in the tumor microenvironment but is presumed to be enzymatically inactive in the blood due to complex formation with serum protease inhibitors α-1-antichymotrypsin and α-2-macroglobulin (A2M). PSA-A2M complexes cannot be measured by standard ELISA assays and are also rapidly cleared from the circulation. Thus the exact magnitude of PSA production by prostate cancer cells is not easily measured...
April 16, 2018: Prostate
https://www.readbyqxmd.com/read/29658662/-application-of-mechanically-reinforced-45s5-bioglass-sup-%C3%A2-sup-derived-bioactive-glass-ceramic-porous-scaffolds-for-bone-defect-repairing-in-rabbits
#15
Lifeng Chen, Xianyan Yang, Rui Ma, Linghua Zhu
<b>Objective:</b> To evaluate the application of mechanically reinforced 45S5 Bioglass<sup>®</sup>-derived glass ceramic porous scaffolds for repair of bone defect in rabbits. <b>Methods:</b> The BG-ZnB powders were added into the 45S5 Bioglass<sup>®</sup> powder/paraffin microsphere mixtures and were sintered at 900℃ to obtain porous scaffolds with highly bioactive BG-ZnB of 0%, 2% or 4% of mass fraction (denoted as 45S5/ZnB0, 45S5/ZnB2, 45S5/ZnB4). Phase composition, porosity and compression properties of three kinds of as-sintered scaffolds were characterized by X-ray analysis, mercury porosimetry, and mechanical test...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29658659/-effect-of-resveratrol-on-peak-bone-mass-in-growing-rats
#16
Huirong Xi, Yuhai Gao, Fangfang Yang, Wenyuan Li, Huiping Ma, Keming Chen
<b>Objective:</b> To investigate the effect of resveratrol on peak bone mineral density and bone mass in growing rats. <b>Methods:</b> Thirty-six female healthy Wistar rats were randomly divided into control group, icariin group and resveratrol group with 12 rats in each group. Icariin (25 mg·kg<sup>-1</sup>·d<sup>-1</sup>), resveratrol (8.4 mg·kg<sup>-1</sup>·d<sup>-1</sup>) or equal volume of distilled water were given by gavage to icariin group, resveratrol group and control group, respectively...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29658611/effects-of-nicotine-on-the-metabolism-and-gene-expression-profile-of-sprague%C3%A2-dawley-rat-primary-osteoblasts
#17
Dan Liang, Ke-Jing Wang, Zhi-Qun Tang, Run-He Liu, Fulei Zeng, Miao-Ying Cheng, Qi-Si Lian, Hong-Kun Wu
Smoking is a risk factor associated with bone and oral diseases, particularly periodontitis. Nicotine, the major toxic component of tobacco, is able to affect the quality and quantity of bone. Osteoblasts serve an important role in bone formation. Thus far, the effects of nicotine on metabolism‑associated gene and protein expression in osteoblasts have been controversial and the mechanisms remain unclear. The present study assessed alterations in osteogenic activity by performing a Cell Counting kit‑8 assay to investigate proliferation, Annexin V‑fluorescein isothiocyanate/propidium iodide staining to investigate apoptosis, alizarin red staining to investigate the formation of mineralized nodules, reverse transcription‑quantitative polymerase chain reaction and western blotting to investigate the mRNA and protein levels of collagen I, alkaline phosphatase, bone osteocalcin, bone sialoprotein and osteopontin; and mRNA microarray expression analysis, Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analysis to investigate the whole genome expression profile of Sprague‑Dawley (SD) rat primary osteoblasts following treatment with different concentrations of nicotine...
April 13, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29657025/physical-fitness-adiposity-and-diets-as-surrogate-measures-of-bone-health-in-schoolchildren-a-biochemical-and-cross-sectional-survey-analysis
#18
Ahmad H Alghadir, Sami A Gabr, Ashraf A Rizk
This study aimed to investigate the associations between adiposity, muscular fitness (MF), diet, sun exposure, and physical activity profiles as surrogate measures with bone health status in a sample of schoolchildren aged 8-18 yr old. A total of 250 Egyptian schoolchildren aged 8-18 yr were randomly invited to participate in these cross-sectional survey analyses. Calcaneal broadband ultrasound attenuation (c-BUA), bone mineral density (BMD), and bone formation markers (total calcium, serum bone alkaline phosphatase, and osteocalcin) were measured as markers of bone health...
March 21, 2018: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29655559/associations-between-bone-and-energy-metabolism-in-cows-fed-diets-differing-in-level-of-dietary-cation-anion-difference-and-supplemented-with-cholecalciferol-or-calcidiol
#19
R M Rodney, N P Martinez, P Celi, E Block, P C Thomson, G Wijffels, D R Fraser, J E P Santos, I J Lean
Bone-derived hormones play an important role in metabolism. This study examined the hypothesis that interactions between bone and energy metabolism, particularly those involving osteocalcin, are present in dairy cattle and have feedback mechanisms over time. Associations between metabolites in blood were examined in 32 Holstein cows blocked by parity and milk yield and randomly allocated to diets containing either 0.27 mg/kg dry matter (DM) calcidiol or cholecalciferol for an anticipated intake of 3 mg/d (120,000 IU/d) at 11 kg of DM, and positive (+130 mEq/kg DM) or negative (-130 mEq/kg DM) dietary cation-anion difference (DCAD) from 252 d of gestation to calving...
April 11, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29653294/sclerostin-vaccination-mitigates-estrogen-deficiency-induction-of-bone-mass-loss-and-microstructure-deterioration
#20
Feng-Sheng Wang, Re-Wen Wu, Wei-Shiung Lain, Tsai-Chen Tsai, Yu-Shan Chen, Yi-Chih Sun, Huei-Jing Ke, Jui-Chen Li, Jau-Lang Hwang, Jih-Yang Ko
Sclerostin (SOST) is a Wnt signaling inhibitor detrimental to osteogenic differentiation and bone mineral acquisition. While control of SOST action delays the pathogenesis of skeletal disorders, the effects of SOST vaccination on the estrogen deficiency-induced bone deterioration remain elusive. In this study, we generated a SOST-Fc fusion protein which was composed of a SOST peptide Pro-Asn-Ala-Ile-Gly along with an IgG Fc fragment. SOST-Fc vaccination increased serum anti-SOST antibody levels and reduced serum SOST concentrations in mice...
April 10, 2018: Bone
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