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https://www.readbyqxmd.com/read/28527949/microproteome-of-dentoalveolar-tissues
#1
Cristiane R Salmon, Ana Paula O Giorgetti, Adriana F Paes Leme, Romênia R Domingues, Tamara N Kolli, Brian L Foster, Francisco H Nociti
Proteomic analysis of extracellular matrices (ECM) of dentoalveolar tissues can provide insights into developmental, pathological, and reparative processes. However, targeted dissection of mineralized tissues, dental cementum (DC), alveolar bone (AB), and dentin (DE), presents technical difficulties. We demonstrate an approach combining EDTA decalcification and laser capture microdissection (LCM), followed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS), to analyze proteome profiles of these tissues...
May 17, 2017: Bone
https://www.readbyqxmd.com/read/28526267/neurological-heterotopic-ossification-current-understanding-and-future-directions
#2
Rhys D Brady, Sandy R Shultz, Stuart J McDonald, Terence J O'Brien
Neurological heterotopic ossification (NHO) involves the formation of bone in soft tissue following a neurological condition, of which the most common are brain and spinal cord injuries. NHO often forms around the hip, knee and shoulder joints, causing severe pain and joint deformation which is associated with significant morbidity and reduced quality of life. The cellular and molecular events that initiate NHO have been the focus of an increasing number of human and animal studies over the past decade, with this work largely driven by the need to unearth potential therapeutic interventions to prevent the formation of NHO...
May 16, 2017: Bone
https://www.readbyqxmd.com/read/28511873/misdiagnosis-of-vertebral-fractures-on-local-radiographic-readings-of-the-multicentre-point-prevalence-of-osteoporosis-in-internal-medicine-study
#3
Daniele Diacinti, Claudio Vitali, Gualberto Gussoni, Daniela Pisani, Luigi Sinigaglia, Gerolamo Bianchi, Ranuccio Nuti, Luigi Gennari, Stefano Pederzoli, Maddalena Grazzini, Antonella Valerio, Antonino Mazzone, Carlo Nozzoli, Mauro Campanini, Carlina V Albanese
BACKGROUND: Osteoporotic vertebral fractures (VFs) are often misdiagnosed because asymptomatic and occurring in the absence of specific trauma. Further, diagnostic assessment of VFs may be suboptimal. AIM OF THE STUDY: To assess the misdiagnosis of vertebral fractures on local radiographic readings in the cohort of patients enrolled in the POINT study. METHODS: We enrolled hospitalised patients, admitted for any cause to the Internal Medicine Units of 37 hospitals participating to the cross-sectional previously published POINT study...
May 13, 2017: Bone
https://www.readbyqxmd.com/read/28506889/nfam1-signaling-enhances-osteoclast-formation-and-bone-resorption-activity-in-paget-s-disease-of-bone
#4
Yuvaraj Sambandam, Kumaran Sundaram, Takamitsu Saigusa, Sundaravadivel Balasubramanian, Sakamuri V Reddy
Paget's disease of bone (PDB) is marked by the focal activity of abnormal osteoclasts (OCLs) with excess bone resorption. We previously detected measles virus nucleocapsid protein (MVNP) transcripts in OCLs from patients with PDB. Also, MVNP stimulates pagetic OCL formation in vitro and in vivo. However, the mechanism by which MVNP induces excess OCLs/bone resorption activity is unclear. Microarray analysis identified MVNP induction of NFAM1 (NFAT activating protein with ITAM motif 1) expression. Therefore, we hypothesize that MVNP induction of NFAM1 enhances OCL differentiation and bone resorption in PDB...
May 12, 2017: Bone
https://www.readbyqxmd.com/read/28506888/calcium-sensing-receptor-erk-signaling-promotes-odontoblastic-differentiation-of-human-dental-pulp-cells
#5
Hiroyuki Mizumachi, Shinichiro Yoshida, Atsushi Tomokiyo, Daigaku Hasegawa, Sayuri Hamano, Asuka Yuda, Hideki Sugii, Suguru Serita, Hiromi Mitarai, Katsuaki Koori, Nahisa Wada, Hidefumi Maeda
Activation of the G protein-coupled calcium-sensing receptor (CaSR) has crucial roles in skeletal development and bone turnover. Our recent study has identified a role for activated CaSR in the osteogenic differentiation of human periodontal ligament stem cells. Furthermore, odontoblasts residing inside the tooth pulp chamber play a central role in dentin formation. However, it remains unclear how CaSR activation affects the odontoblastic differentiation of human dental pulp cells (HDPCs). We have investigated the odontoblastic differentiation of HDPCs exposed to elevated levels of extracellular calcium (Ca) and strontium (Sr), and the contribution of CaSR and the L-type voltage-dependent calcium channel (L-VDCC) to this process...
May 12, 2017: Bone
https://www.readbyqxmd.com/read/28502885/contra-lateral-bone-loss-at-the-distal-radius-in-postmenopausal-women-after-a-distal-radius-fracture-a-two-year-follow-up-hrpqct-study
#6
Joost J A de Jong, Jacobus J C Arts, Paul C Willems, Sandrine P G Bours, Judith P A Bons, Paul P C A Menheere, Bert van Rietbergen, Piet P Geusens, Joop P W van den Bergh
Opposite to the fracture side, bone mineral density (BMD) measured by DXA at the contra-lateral side does not change after a distal radius fracture. However, it is unknown if also bone micro-architecture and strength at the contralateral side are unaffected. Therefore, the aim of this study was to assess BMD, micro-architecture and bone mechanical properties at the contra-lateral side during two years follow-up after a distal radius fracture using high resolution peripheral quantitative computed tomography (HRpQCT)...
May 11, 2017: Bone
https://www.readbyqxmd.com/read/28502884/quantifying-sex-race-and-age-specific-differences-in-bone-microstructure-requires-measurement-of-anatomically-equivalent-regions
#7
Ali Ghasem-Zadeh, Andrew Burghardt, Xiao-Fang Wang, Sandra Iuliano, Serena Bonaretti, Minh Bui, Roger Zebaze, Ego Seeman
INTRODUCTION: Individuals differ in forearm length. As microstructure differs along the radius, we hypothesized that errors may occur when sexual and racial dimorphisms are quantified at a fixed distance from the radio-carpal joint. METHODS: Microstructure was quantified ex vivo in 18 cadaveric radii using high resolution peripheral quantitative computed tomography and in vivo in 158 Asian and Caucasian women and men at a fixed region of interest (ROI), a corrected ROI positioned at 4...
May 11, 2017: Bone
https://www.readbyqxmd.com/read/28487133/the-association-between-insulin-use-and-volumetric-bone-mineral-density-bone-micro-architecture-and-bone-strength-of-the-distal-radius-in-patients-with-type-2-diabetes-the-maastricht-study
#8
E A C de Waard, J H M Driessen, J J A de Jong, T A C M van Geel, R M A Henry, H A W van Onzenoort, M T Schram, P C Dagnelie, C J van der Kallen, S J S Sep, C D A Stehouwer, N C Schaper, A Koster, H H C M Savelberg, C Neef, P P M M Geusens, F de Vries, J P W van den Bergh
Type 2 diabetes mellitus (T2DM) has been associated with an increased risk of fractures, despite normal to increased bone mineral density (BMD). Insulin use is one of the factors linked to this increased fracture risk. However, direct negative effects of insulin on bone quality are not expected since insulin is thought to be anabolic to bone. In this cross-sectional study the association between insulin use and volumetric BMD (vBMD), bone micro-architecture and bone strength of the distal radius, as measured with HR-pQCT, was examined...
May 6, 2017: Bone
https://www.readbyqxmd.com/read/28479497/maternal-smoking-during-pregnancy-is-associated-with-childhood-bone-fractures-in-offspring-a-birth-cohort-study-of-6718-children
#9
Roope Parviainen, Juha Auvinen, Tytti Pokka, Willy Serlo, Juha-Jaakko Sinikumpu
In children there is limited understanding about the biological and environmental risk factors of fractures. Therefore, we aimed to study the effect of maternal smoking on preschool children's fractures hypothesizing that the fracture risk might be programmed during intrauterine growth in means of disturbed bone formation. A prospective birth cohort included women living in Northern Finland with an expected date of delivery between July 1st, 1985 and June 30th, 1986 (N=9362), and their offspring (N=9432). Smoking was inquired during pregnancy and when the offspring reached seven years of age...
May 4, 2017: Bone
https://www.readbyqxmd.com/read/28479496/effect-of-early-life-physical-growth-on-midlife-vertebral-dimensions-the-northern-finland-birth-cohort-1966-study
#10
Petteri Oura, Markus Paananen, Marja Ojaniemi, Juha Auvinen, Juho-Antti Junno, Jaro Karppinen, Jaakko Niinimäki
Small vertebral size is an independent risk factor for osteoporotic vertebral fractures. Physical growth in early life is related to bone health in later life, but the relationship of early growth versus vertebral size has been inconclusively studied. Utilizing the Northern Finland Birth Cohort 1966 with a 47-year follow-up, we investigated how physical growth in early life is associated with midlife vertebral dimensions. We obtained several physical growth parameters of 1) birth (gestational age, length, weight, BMI), 2) infancy and childhood (peak height velocity (PHV), peak weight velocity (PWV), adiposity peak (AP), adiposity rebound (AR)), and 3) puberty (BMI at growth spurt take-off (TO), PHV, height change)...
May 4, 2017: Bone
https://www.readbyqxmd.com/read/28479495/adjusting-frax%C3%A2-on-tbs-for-identification-of-subjects-at-high-risk-of-fractures
#11
G Couraud, C Souffir, E Gaigneux, S Kolta, C Roux, K Briot
The objective of this study was to compare the proportion of patients at high fracture risk according to FRAX® and FRAX® adjusted on TBS in patients hospitalized for a non vertebral fractures. Patients were selected from a Fracture Liaison Service FLS): clinical risk factors, bone mineral density (BMD) and TBS were assessed at the time of the fracture. Without considering the current fracture, we calculated FRAX® and FRAX® adjusted on TBS (TBS-FRAX®), and compared the proportion of patients with a high risk for major osteoporotic fracture (MOF)>20% according to FRAX® and TBS-FRAX®, and the proportion of subjects who should be treated according to current guidelines...
May 4, 2017: Bone
https://www.readbyqxmd.com/read/28476575/contribution-of-atypical-chemokine-receptor-2-ackr2-in-bone-remodeling
#12
Izabella Lucas de Abreu Lima, Janine Mayra da Silva, Letícia Fernanda Duffles Rodrigues, Davidson Frois Madureira, Angélica Cristina Fonseca, Gustavo Pompermaier Garlet, Mauro Martins Teixeira, Remo Castro Russo, Sandra Yasuyo Fukada, Tarcília Aparecida da Silva
INTRODUCTION: Bone remodeling is a tightly regulated process influenced by chemokines. ACKR2 is a decoy receptor for CC chemokines functioning as regulator of inflammatory response. In this study we investigated whether the absence of ACKR2 would affect bone phenotype and remodeling induced by mechanical loading. METHODS: An orthodontic appliance was placed between incisors and first molar of ACKR2 deficient (ACKR2(-/-)) and C57BL6/J (wild-type/WT) mice. Microtomography, histology and qPCR were performed to evaluate bone parameters, orthodontic tooth movement (OTM), bone cells counts and the expression of ACKR2, bone remodeling markers, CC chemokines and chemokines receptors...
May 3, 2017: Bone
https://www.readbyqxmd.com/read/28476577/utility-of-quantitative-micro-computed-tomographic-analysis-in-zebrafish-to-define-gene-function-during-skeletogenesis
#13
Julia F Charles, Meera Sury, Kelly Tsang, Katia Urso, Katrin Henke, Yue Huang, Ruby Russell, Jeffrey Duryea, Matthew P Harris
The zebrafish is a powerful experimental model to investigate the genetic and morphologic basis of vertebrate development. Analysis of skeletogenesis in this fish is challenging as a result of the small size of the developing and adult zebrafish. Many of the bones of small fishes such as the zebrafish and medaka are quite thin, precluding many standard assays of bone quality and morphometrics commonly used on bones of larger animals. Microcomputed tomography (microCT) is a common imaging technique used for detailed analysis of the skeleton of the zebrafish and determination of mutant phenotypes...
May 2, 2017: Bone
https://www.readbyqxmd.com/read/28476576/non-bmd-dxa-measurements-of-the-hip
#14
Clinten P Edmondson, Elliott N Schwartz
Hip fracture is one of the most serious complications of osteoporosis. More than 50% of hip and other fractures occur in patients without densitometric osteoporosis. Therefore, areal bone mineral density (aBMD) may not be the best way to assess fracture risk. In order to improve assessment of fracture risk, many other approaches have been taken. At the present time, the Fracture Risk Algorithm (FRAX©) is one of the most notable ways to improve assessment of fracture risk. However, since early in the initiation of the dual energy x-ray absorptiometry (DXA) era, several non-BMD DXA approaches to the assessment of hip fracture risk have been proposed...
May 2, 2017: Bone
https://www.readbyqxmd.com/read/28476574/association-of-gene-variants-of-transcription-factors-ppar%C3%AE-runx2-osterix-genes-and-col2a1-igfbp3-genes-with-the-development-of-osteonecrosis-of-the-femoral-head-in-chinese-population
#15
Yang Song, Zhenwu Du, Ming Ren, Qiwei Yang, Qingyu Wang, Gaoyang Chen, Haiyue Zhao, Zhaoyan Li, Jincheng Wang, Guizhen Zhang
The molecular pathogenesis of osteonecrosis of the femoral head (ONFH) has been remained obscure so that its prevalence has been increasing in recent decades. Different transcription factors play critical roles in maintaining the balance between osteogenesis and adipogenesis. However, it has been unclear that the genes variants of the transcription factors exert the effects on the imbalance between steogenesis and adipogenesis during the development of ONFH. Here, we selected the 11SNPs from steogenesis, adipogenesis-specific transcription factors RUNX2, Osterix, and PPARγ genes, chondrogenesis or adipogenesis key factors COL2A1, IGFBP3 genes and analysed the genotypes, alleles, haplotypes and their association with the risk and clinical phenotypes of ONFH through Mass ARRAY® platformin in 200 ONFH patients and 177controls...
May 2, 2017: Bone
https://www.readbyqxmd.com/read/28465250/a-cumulative-analogue-joint-involvement-scale-cajis-for-fibrodysplasia-ossificans-progressiva-fop
#16
Frederick S Kaplan, Mona Al Mukaddam, Robert J Pignolo
BACKGROUND: Fibrodysplasia ossificans progressiva (FOP) is a catastrophic genetic disorder of progressive heterotopic ossification (HO). Assessment of functional mobility in FOP will be essential to support clinical trials of investigational agents. RESULTS: Of necessity, we developed a simple, rapidly-administered, cumulative analogue joint involvement scale (CAJIS) for FOP based on assessments in 144 individuals worldwide with classic FOP. CONCLUSIONS: CAJIS scores correlated with patient age, activities of daily living, and ambulatory function with excellent inter-rater variability...
April 29, 2017: Bone
https://www.readbyqxmd.com/read/28461254/combination-sclerostin-antibody-and-zoledronic-acid-treatment-outperforms-either-treatment-alone-in-a-mouse-model-of-osteogenesis-imperfecta
#17
David G Little, Lauren Peacock, Kathy Mikulec, Michaela Kneissel, Ina Kramer, Tegan L Cheng, Aaron Schindeler, Craig Munns
In this study, we examined the therapeutic potential of anti-Sclerostin Antibody (Scl-Ab) and bisphosphonate treatments for the bone fragility disorder Osteogenesis Imperfecta (OI). Mice with the Amish OI mutation (Col1a2 G610C mice) and control wild type littermates (WT) were treated from week 5 to week 9 of life with (1) saline (control), (2) zoledronic acid given 0.025mg/kg s.c. weekly (ZA), (3) Scl-Ab given 50mg/kg IV weekly (Scl-Ab), or (4) a combination of both (Scl-Ab/ZA). Functional outcomes were prioritized and included bone mineral density (BMD), bone microarchitecture, long bone bending strength, and vertebral compression strength...
April 29, 2017: Bone
https://www.readbyqxmd.com/read/28455215/effect-of-the-lipoxygenase-inhibitors-baicalein-and-zileuton-on-the-vertebra-in-ovariectomized-rats
#18
D Saul, S Gleitz, H H Nguyen, R L Kosinsky, S Sehmisch, D B Hoffmann, M Wassmann, B Menger, M Komrakova
Osteoporosis is one of the most common diseases worldwide. In osteoporosis, vertebral fractures represent a major burden. Lipoxygenase (LOX) inhibitors such as baicalein and zileuton may represent a promising therapeutic option owing to their antioxidative effects and suppression of various inflammatory processes in muscle and bone. The effect of these LOX inhibitors on the spine was studied in osteopenic rats. Female Sprague-Dawley rats were divided two times into five groups: four groups each were ovariectomized (OVX) and one control group was non-ovariectomized (NON-OVX)...
April 26, 2017: Bone
https://www.readbyqxmd.com/read/28455214/conserved-signaling-pathways-underlying-heterotopic-ossification
#19
Chen Kan, Lijun Chen, Yangyang Hu, Na Ding, Haimei Lu, Yuyun Li, John A Kessler, Lixin Kan
Heterotopic ossification (HO), a serious disorder of extra-skeletal bone formation, occurs as a common complication of trauma or in rare genetic disorders. Many conserved signaling pathways have been implicated in HO; however, the exact underlying molecular mechanisms for many forms of HO are still unclear. The emerging picture is that dysregulation of bone morphogenetic protein (BMP) signaling plays a central role in the process, but that other conserved signaling pathways, such as Hedgehog (HH), Wnt/β-catenin and Fibroblast growth factors (FGF), are also involved, either through cross-talk with BMP signaling or through other independent mechanisms...
April 25, 2017: Bone
https://www.readbyqxmd.com/read/28450215/effect-of-parity-on-bone-mineral-density-a-systematic-review-and-meta-analysis
#20
Seung Yeon Song, Yejee Kim, Hyunmin Park, Yun Joo Kim, Wonku Kang, Eun Young Kim
INTRODUCTION: Parity has been suggested as a possible factor affecting bone health in women. However, study results on its association with bone mineral density are conflicting. METHODS: PubMed, EMBASE, the Cochrane Library, and Korean online databases were searched using the terms "parity" and "bone mineral density", in May 2016. Two independent reviewers extracted the mean and standard deviation of bone mineral density measurements of the femoral neck, spine, and total hip in nulliparous and parous healthy women...
April 25, 2017: Bone
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