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Ectopic ossification

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https://www.readbyqxmd.com/read/27862618/scleraxis-lineage-cells-contribute-to-ectopic-bone-formation-in-muscle-and-tendon
#1
Shailesh Agarwal, Shawn J Loder, David Cholok, Joshua Peterson, John Li, Christopher Breuler, R Cameron Brownley, Hsiao Hsin Sung, Mike Chung, Nobuhiro Kamiya, Shuli Li, Bin Zhao, Vesa Kaartinen, Thomas A Davis, Ammar T Qureshi, Ernestina Schipani, Yuji Mishina, Benjamin Levi
The pathologic development of heterotopic ossification (HO) is well described in patients with extensive trauma or with hyperactivating mutations of the bone morphogenetic protein (BMP) receptor ACVR1. However, identification of progenitor cells contributing to this process remains elusive. Here we show that connective tissue cells contribute to a substantial amount of HO anlagen caused by trauma using postnatal, tamoxifen-inducible, scleraxis-lineage restricted reporter mice (Scx-creERT2/tdTomato(fl/fl) )...
November 8, 2016: Stem Cells
https://www.readbyqxmd.com/read/27858401/intervertebral-disc-degeneration-ectopic-calcification-advanced-glycation-end-products-nucleus-pulposus-cells
#2
S Illien-Jünger, O M Torre, W F Kindschuh, X Chen, D M Laudier, J C Iatridis
Ectopic calcifications in intervertebral discs (IVDs) are known characteristics of IVD degeneration that are not commonly reported but may be implicated in structural failure and dysfunctional IVD cell metabolic responses. This study investigated the novel hypothesis that ectopic calcifications in the IVD are associated with advanced glycation end products (AGEs) via hypertrophy and osteogenic differentiation. Histological analyses of human IVDs from several degeneration stages revealed areas of ectopic calcification within the nucleus pulposus and at the cartilage endplate...
November 18, 2016: European Cells & Materials
https://www.readbyqxmd.com/read/27803113/histopathological-evaluation-and-expression-of-the-pluripotent-mesenchymal-stem-cell-like-markers-cd105-and-cd44-in-the-synovial-membrane-of-patients-with-primary-versus-secondary-hip-osteoarthritis
#3
Sabin Gligore Turdean, Ioan Jung, Simona Gurzu, Ancuta Zazgyva, Annamaria Fetyko, Ciprian Oliviu Roman, Mihai Turcu, Tudor Sorin Pop
To present the morphological changes of classic primary versus rapidly progressive and secondary hip osteoarthritis (HO) and to examine the expression of two pluripotent mesenchymal stem cell-like markers in the synovial membrane. A prospective observational study was conducted in 57 consecutive cases of radiologically confirmed HO in which total hip arthroplasty was performed. Based on the radiological and clinicopathological features, the cases were divided into three categories: classic primary HO (group A; n=16), rapidly destructive HO (group B; n=24), and HO secondary to avascular osteonecrosis of the femoral head (group C; n=17)...
November 1, 2016: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/27800117/myositis-ossificans-progressive-case-report
#4
Sofia Talbi, Nassira Aradoini, Iman El Mezouar, Fatima Ezzahra Abourazzak, Taoufik Harzy
Myositis ossificans progressiva (MOP) is an autosomal dominant disorder. There is a progressive ectopic ossification and skeletal malformation, mainly in the connective tissue of muscle. The diagnosis is based on the clinical findings and radiological demonstration of the skeletal malformations. A 38-year-old female patient was admitted to our department with progressive increase of the thigh. Results of laboratory studies were normal. The radiography of the right thigh showed multiple intramuscular calcifications...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27784668/muscle-as-an-osteoinductive-niche-for-local-bone-formation-with-the-use-of-a-biphasic-calcium-sulphate-hydroxyapatite-biomaterial
#5
D B Raina, A Gupta, M M Petersen, W Hettwer, M McNally, M Tägil, M-H Zheng, A Kumar, L Lidgren
OBJECTIVES: We have observed clinical cases where bone is formed in the overlaying muscle covering surgically created bone defects treated with a hydroxyapatite/calcium sulphate biomaterial. Our objective was to investigate the osteoinductive potential of the biomaterial and to determine if growth factors secreted from local bone cells induce osteoblastic differentiation of muscle cells. MATERIALS AND METHODS: We seeded mouse skeletal muscle cells C2C12 on the hydroxyapatite/calcium sulphate biomaterial and the phenotype of the cells was analysed...
October 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/27779644/all-trans-retinoic-acid-shifts-rosiglitazone-induced-adipogenic-differentiation-to-osteogenic-differentiation-in-mouse-embryonic-fibroblasts
#6
Ying Shao, Qian-Zhao Chen, Yu-Hua Zeng, Yang Li, Wen-Yan Ren, Lin-Yun Zhou, Rong-Xin Liu, Ke Wu, Jun-Qing Yang, Zhong-Liang Deng, Yu Yu, Wen-Juan Sun, Bai-Cheng He
Rosiglitazone (RSG) is a potent drug used in the treatment of insulin resistance; however, it is associated with marked skeletal toxicity. RSG-induced osteoporosis may contribute to the promotion of adipogenic differentiation at the expense of osteogenic differentiation in bone marrow stromal cells. The aim of this study was to investigate whether RSG-induced bone toxicity can be reversed by combined treatment with all-trans retinoic acid (ATRA). We examined different osteogenic markers in mouse embryonic fibroblasts (MEFs) following treatment with RSG, ATRA, or RSG and ATRA in combination...
October 19, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27763962/the-role-of-radiographs-and-office-visits-in-the-follow-up-of-healed-intertrochanteric-hip-fractures-an-economic-analysis
#7
Harish Kempegowda, Raveesh Richard, Amrut Borade, Akhil Tawari, Abby M Howenstein, Erik N Kubiak, Michael Suk, Daniel S Horwitz
OBJECTIVES: The purpose of this study was to evaluate the role and the necessity of radiographs and office visits obtained during follow-up of intertrochanteric hip injuries. DESIGN: Retrospective study. SETTING: Two level I trauma centers. PATIENTS: Four hundred sixty-five elderly patients who were surgically treated for an intertrochanteric fracture of the femur at 2 level I trauma centers between January 2009 and August 2014 were retrospectively identified from orthopaedic trauma databases...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27756094/the-complex-gnas-imprinted-locus-and-mesenchymal-stem-cells-differentiation
#8
F M Elli, V Boldrin, A Pirelli, A Spada, G Mantovani
All tissues and organs derive from stem cells, which are undifferentiated cells able to differentiate into specialized cells and self-renewal. In mammals, there are embryonic stem cells that generate germ layers, and adult stem cells, which act as a repair system for the body and maintain the normal turnover of regenerative organs. Mesenchymal stem cells (MSCs) are nonhematopoietic adult multipotent cells, which reside in virtually all postnatal organs and tissues, and, under appropriate in vitro conditions, are capable to differentiate into osteogenic, adipogenic, chondrogenic, myogenic, and neurogenic lineages...
October 18, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27708134/surgical-excision-of-heterotopic-ossification-leads-to-re-emergence-of-mesenchymal-stem-cell-populations-responsible-for-recurrence
#9
Shailesh Agarwal, Shawn Loder, David Cholok, John Li, Chris Breuler, James Drake, Cameron Brownley, Joshua Peterson, Shuli Li, Benjamin Levi
: : Trauma-induced heterotopic ossification (HO) occurs after severe musculoskeletal injuries and burns, and presents a significant barrier to patient rehabilitation. Interestingly, the incidence of HO significantly increases with repeated operations and after resection of previous HO. Treatment of established heterotopic ossification is challenging because surgical excision is often incomplete, with evidence of persistent heterotopic bone. As a result, patients may continue to report the signs or symptoms of HO, including chronic pain, nonhealing wounds, and joint restriction...
October 5, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27693496/ossification-of-the-posterior-ligament-is-mediated-by-osterix-via-inhibition-of-the-%C3%AE-catenin-signaling-pathway
#10
Lei Shi, Guodong Cai, Jiangang Shi, Yongfei Guo, Dechun Chen, Deyu Chen, Haisong Yang
Ossification of the posterior longitudinal ligament (OPLL) involves ectopic calcification of the spinal ligament preferentially at the cervical spine. OPLL is associated with different diseases and occurs by endochondral ossification, which is associated with the activity of different transcription factors. However, the pathogenesis of OPLL remains unclear. Here, we investigated the role of osterix (Osx), a transcription factor that functions downstream of Runx2 and is an important regulator of osteogenesis, in the process of OPLL in a dexamethasone (Dex)-induced model of spinal ligament ossification...
September 29, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27690279/ectopic-models-for-endochondral-ossification-comparing-pellet-and-alginate-bead-culture-methods
#11
Holly E Weiss-Bilka, Megan E McGann, Matthew J Meagher, Ryan K Roeder, Diane R Wagner
Key aspects of native endochondral bone development and fracture healing can be mimicked in mesenchymal stem cells (MSCs) through standard in vitro chondrogenic induction. Exploiting this phenomenon has recently emerged as an attractive technique to engineer bone tissue, however relatively little is known about the best conditions for doing so. The objective of this study was to compare the bone forming capacity and angiogenic induction of hypertrophic cell constructs containing human adipose-derived stem cells (hASCs) primed for chondrogenesis in two different culture systems: high-density pellets and alginate bead hydrogels...
September 30, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27670695/the-role-of-dickkopf-1-in-joint-remodeling-and-fibrosis-a-link-connecting-spondyloarthropathies-and-scleroderma
#12
Kalliopi Klavdianou, Stamatis-Nick Liossis, Lazaros Sakkas, Dimitrios Daoussis
BACKGROUND: Dickkopf-1 (Dkk-1) is a soluble inhibitor of the canonical Wnt pathway, which plays critical roles in embryonic development. Evidence suggests that this molecule regulates several aspects of both bone biology and fibrosis. OBJECTIVES: To provide an overview of our current knowledge of the role of Dkk-1 in joint remodeling and fibrosis. METHODS: We performed an electronic search (Medline) using the following key words: Dickkopf-1 (or Dkk-1), new bone formation, joint remodeling, ankylosing spondylitis, systemic sclerosis (or scleroderma), and fibrosis, supplemented by a manual search of references from retrieved articles...
August 23, 2016: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/27667570/osteoblast-differentiation-at-a-glance
#13
Arkady Rutkovskiy, Kåre-Olav Stensløkken, Ingvar Jarle Vaage
Ossification is a tightly regulated process, performed by specialized cells called osteoblasts. Dysregulation of this process may cause inadequate or excessive mineralization of bones or ectopic calcification, all of which have grave consequences for human health. Understanding osteoblast biology may help to treat diseases such as osteogenesis imperfecta, calcific heart valve disease, osteoporosis, and many others. Osteoblasts are bone-building cells of mesenchymal origin; they differentiate from mesenchymal progenitors, either directly or via an osteochondroprogenitor...
September 26, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27621556/bone-formation-of-human-mesenchymal-stem-cells-harvested-from-reaming-debris-is-stimulated-by-low-dose-bone-morphogenetic-protein-7-application-in-vivo
#14
Fabian Westhauser, Melanie Höllig, Bruno Reible, Kai Xiao, Gerhard Schmidmaier, Arash Moghaddam
Stimulation of mesenchymal stem cells (MSC) by bone morphogenetic protein-7 (BMP-7) leads to superior bone formation in vitro. In this in vivo-study we evaluated the use of BMP-7 in combination with MSC isolated from reaming debris (RIA-MSC) and iliac crest bone marrow (BMSC) with micro-computed tomography (mCT)-analysis. β-Tricalciumphosphate scaffolds coated with BMSC and RIA-MSC were stimulated with three different BMP-7-concentrations and implanted ectopically in severe combined immunodeficiency (SCID) mice...
December 2016: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27611796/extensive-ossification-of-the-paraspinal-ligaments-in-a-patient-with-vitamin-d-resistant-rickets-case-report-with-literature-review
#15
Yujiro Hirao, Hirotaka Chikuda, Yasushi Oshima, Yoshitaka Matsubayashi, Sakae Tanaka
INTRODUCTION: Ectopic ossification of the spinal ligaments is not uncommon in patients with Vitamin D-resistant rickets (VDRR), but the long-term consequences of this condition have not been reported. PRESENTATION OF CASE: The case was a 65-year-old female with VDRR who reported progressive weakness of the upper extremities, difficulty walking, neck pain, and numbness in the left arm. Imaging studies demonstrated cord compression with ectopic ossification at the rim of the occipital bone and OPLL at C1 level...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27510797/chemical-modification-of-extracellular-matrix-by-cold-atmospheric-plasma-generated-reactive-species-affects-chondrogenesis-and-bone-formation
#16
Peter Eisenhauer, Natalie Chernets, You Song, Danil Dobrynin, Nancy Pleshko, Marla J Steinbeck, Theresa A Freeman
The goal of this study was to investigate whether cold plasma generated by dielectric barrier discharge (DBD) modifies extracellular matrices (ECM) to influence chondrogenesis and endochondral ossification. Replacement of cartilage by bone during endochondral ossification is essential in fetal skeletal development, bone growth and fracture healing. Regulation of this process by the ECM occurs through matrix remodelling, involving a variety of cell attachment molecules and growth factors, which influence cell morphology and protein expression...
September 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27499695/role-of-the-erk1-2-signaling-pathway-in-osteogenesis-of-rat-tendon-derived-stem-cells-in-normoxic-and-hypoxic-cultures
#17
Pei Li, Yuan Xu, Yibo Gan, Lei Song, Chengmin Zhang, Liyuan Wang, Qiang Zhou
BACKGROUND: Ectopic ossification and increased vascularization are two common phenomena in the chronic tendinopathic tendon. The increased vascularization usually leads to an elevated local oxygen tension which is one of micro-environments that can influence differentiate status of stem cells. OBJECTIVE: This study aimed to investigate the osteogenesis capacity of rat tendon-derived stem cells TDSCs (rTDSCs) in normoxic and hypoxic cultures, and to study the role of ERK1/2 signaling pathway in this process...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27494521/characterization-of-cells-isolated-from-genetic-and-trauma-induced-heterotopic-ossification
#18
Shailesh Agarwal, James Drake, Ammar T Qureshi, Shawn Loder, Shuli Li, Kay Shigemori, Jonathan Peterson, David Cholok, Jonathan A Forsberg, Yuji Mishina, Thomas A Davis, Benjamin Levi
Heterotopic ossification (HO) is the pathologic formation of bone separate from the normal skeleton. Although several models exist for studying HO, an understanding of the common in vitro properties of cells isolated from these models is lacking. We studied three separate animal models of HO including two models of trauma-induced HO and one model of genetic HO, and human HO specimens, to characterize the properties of cells derived from tissue containing pre-and mature ectopic bone in relation to analogous mesenchymal cell populations or osteoblasts obtained from normal muscle tissue...
2016: PloS One
https://www.readbyqxmd.com/read/27387871/lizard-tail-skeletal-regeneration-combines-aspects-of-fracture-healing-and-blastema-based-regeneration
#19
Thomas P Lozito, Rocky S Tuan
Lizards are amniotes with the remarkable ability to regenerate amputated tails. The early regenerated lizard tail forms a blastema, and the regenerated skeleton consists of a cartilage tube (CT) surrounding the regenerated spinal cord. The proximal, but not distal, CT undergoes hypertrophy and ossifies. We hypothesized that differences in cell sources and signaling account for divergent cartilage development between proximal and distal CT regions. Exogenous spinal cord implants induced ectopic CT formation in lizard (Anolis carolinensis) blastemas...
August 15, 2016: Development
https://www.readbyqxmd.com/read/27374772/identification-and-functional-characterization-of-rspo2-as-a-susceptibility-gene-for-ossification-of-the-posterior-longitudinal-ligament-of-the-spine
#20
Masahiro Nakajima, Ikuyo Kou, Hirofumi Ohashi, Shiro Ikegawa
Ossification of the posterior longitudinal ligament of the spine (OPLL) is a common spinal disorder that results from ectopic ossification of the posterior longitudinal ligament and causes intractable myelopathy and radiculopathy. In a previous genome-wide association study (GWAS), we found six loci associated with OPLL; however, susceptibility genes in these loci have not been identified yet. Here, we examined one of the GWAS loci and identified RSPO2 (encoding R-spondin 2) as a susceptibility gene for OPLL...
July 7, 2016: American Journal of Human Genetics
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