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https://www.readbyqxmd.com/read/28340490/a-novel-method-of-neo-osseous-flap-prefabrication-induction-of-free-calvarial-periosteum-with-bioactive-glass
#1
Ali Aliyev, Omer Ekin, Ozan Bitik, Gokhan Tuncbilek
Background Reconstruction of craniofacial bone defects is a primary focus of craniofacial surgery. Although autogenous bone grafts remain as the gold standard, alloplastic materials have also gained widespread popularity due to their off-the-shelf availability, ease of use, and durability. In addition to replacing the missing bone, some of these alloplastic materials have also been found to induce new bone formation. Objectives In this study, the phenomenon of neo-osseous induction with bioactive glass was investigated for different implant-soft tissue configurations...
March 24, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28340312/a-preliminary-investigation-on-the-effect-of-extracorporeal-shock-wave-therapy-as-a-treatment-for-neurogenic-heterotopic-ossification-following-traumatic-brain-injury-part-ii-effects-on-function
#2
J E Reznik, E Biros, Y Sacher, O Kibrik, S Milanese, S Gordon, M P Galea
INTRODUCTION: Neurogenic heterotopic ossification (NHO) occurs as a complication of traumatic brain injury (TBI). Management of clinically significant NHO remains variable. Complications of mature NHO include limitation of mobility. The effect of the extracorporeal shock wave therapy (ESWT) on range of motion at hip and knee, and function in patients with TBI with chronic NHO was investigated. METHODS: A series of single-case studies applying ESWT to chronic NHO at the hip or knee of 11 patients with TBI were undertaken at a rehabilitation hospital...
March 24, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28340308/a-preliminary-investigation-on-the-effect-of-extracorporeal-shock-wave-therapy-as-a-treatment-for-neurogenic-heterotopic-ossification-following-traumatic-brain-injury-part-i-effects-on-pain
#3
J E Reznik, E Biros, A C Lamont, Y Sacher, O Kibrik, S Milanese, S Gordon, M P Galea
INTRODUCTION: Neurogenic heterotopic ossification (NHO) is a complication of a neurological injury following traumatic brain injury (TBI) and may be present around major synovial joints. It is often accompanied by severe pain, which may lead to limitation in activities of daily living. Currently, a common intervention for NHO is surgery, which has been reported to carry many additional risks. This study was designed to assess the effect of extracorporeal shock wave therapy (ESWT) on pain in patients with TBI with chronic NHO...
March 24, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28339106/incomplete-ossification-of-the-atlas-in-a-dog-surgical-stabilisation-using-a-sop-plate
#4
V Rodiño-Tilve, J Guevar, G Hammond, J Penderis
No abstract text is available yet for this article.
March 24, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28338575/the-role-of-cx43-mediated-nf%C3%B0%C2%BAb-signaling-pathway-in-ossification-of-posterior-longitudinal-ligament-an-in-vivo-and-in-vitro-study
#5
Dechun Chen, Yu Chen, Tiefeng Li, Lei Shi, Mengxiao Pan, Deyu Chen
STUDY DESIGN: In vivo and in vitro experiments. OBJECTIVES: To illustrate the further molecular mechanism of Cx43-mediated osteoblastic differentiation of ligament cells. SUMMARY OF BACKGROUND DATA: Ossification of the posterior longitudinal ligament (OPLL) is one of the main causes of myelopathy in Asian, but its etiology has not been clarified. We have previously found the mechanical stress can up-regulate Cx43 expression in ligament cells, which transduces mechanical signal to promote osteoblastic differentiation...
March 23, 2017: Spine
https://www.readbyqxmd.com/read/28338424/monocytes-seeded-on-engineered-hypertrophic-cartilage-do-not-enhance-endochondral-ossification-capacity
#6
Atanas Todorov, Celeste Scotti, Andrea Barbero, Arnaud Scherberich, Adam Papadimitropoulos, Ivan Martin
Engineered hypertrophic cartilage (HC) represents an attractive bone substitute material, capable to induce bone formation by endochondral ossification. Since bone formation by HC depends on factors released from the extracellular matrix, in this study, we hypothesized that HC seeding with monocytes committed to osteoclastogenesis could enhance its remodeling, improve chemotaxis of skeletal and vascular cells, and consequently enhance bone formation. This would be particularly relevant for devitalized HC, which currently exhibits only limited osteoinductivity...
March 24, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28338419/competitive-protein-binding-influences-heparin-based-modulation-of-spatial-growth-factor-delivery-for-bone-regeneration
#7
Marian H Hettiaratchi, Catherine Chou, Nicholas Servies, Johanna M Smeekens, Albert Cheng, Camden Esancy, Ronghu Wu, Todd C McDevitt, Robert E Guldberg, Laxminarayanan Krishnan
Tissue engineering strategies involving the in vivo delivery of recombinant growth factors are often limited by the inability of biomaterials to spatially control diffusion of the delivered protein within the site of interest. The poor spatiotemporal control provided by porous collagen sponges, which are used for the clinical delivery of bone morphogenetic protein-2 (BMP-2) for bone regeneration, has necessitated the use of supraphysiological protein doses, leading to inflammation and heterotopic ossification...
March 24, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28337152/maintaining-the-phenotype-stability-of-chondrocytes-derived-from-mscs-by-c-type-natriuretic-peptide
#8
Quan Shi, Zhiyong Qian, Donghua Liu, Jie Sun, Juan Xu, Ximin Guo
Mesenchymal stem cells (MSCs) play a critical role in cartilage tissue engineering. However, MSCs-derived chondrocytes or cartilage tissues are not stable and easily lose the cellular and cartilage phenotype during long-term culture in vitro or implantation in vivo. As a result, chondrocytes phenotypic instability can contribute to accelerated ossification. Thus, it is a big challenge to maintain their correct phenotype for engineering hyaline cartilage. As one member of the natriuretic peptide family, C-type natriuretic peptide (CNP) is found to correlate with the development of the cartilage, affect the chondrocytes proliferation and differentiation...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28335520/endoplasmic-reticulum-stress-and-unfolded-protein-response-in-cartilage-pathophysiology-contributing-factors-to-apoptosis-and-osteoarthritis
#9
REVIEW
Alexandria Hughes, Alexandra E Oxford, Ken Tawara, Cheryl L Jorcyk, Julia Thom Oxford
Chondrocytes of the growth plate undergo apoptosis during the process of endochondral ossification, as well as during the progression of osteoarthritis. Although the regulation of this process is not completely understood, alterations in the precisely orchestrated programmed cell death during development can have catastrophic results, as exemplified by several chondrodystrophies which are frequently accompanied by early onset osteoarthritis. Understanding the mechanisms that underlie chondrocyte apoptosis during endochondral ossification in the growth plate has the potential to impact the development of therapeutic applications for chondrodystrophies and associated early onset osteoarthritis...
March 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334780/eif4a3-deficient-human-ipscs-and-mouse-models-demonstrate-neural-crest-defects-that-underlie-richieri-costa-pereira-syndrome
#10
Emily E Miller, Gerson S Kobayashi, Camila M Musso, Miranda Allen, Felipe A A Ishiy, Luiz C de Caires Junior, Ernesto S G Guimarães, Karina Griesi-Oliveira, Roseli M Zechi-Ceide, Antonio Richieri-Costa, Debora R Bertola, Maria Rita Passos-Bueno, Debra L Silver
Biallelic loss-of-function mutations in the RNA binding protein EIF4A3 cause Richieri-Costa-Pereira syndrome (RCPS), an autosomal recessive condition mainly characterized by craniofacial and limb malformations. However, the pathogenic cellular mechanisms responsible for this syndrome are entirely unknown. Here we used two complementary approaches, patient-derived induced pluripotent stem cells (iPSCs) and conditional Eif4a3 mouse models, to demonstrate that defective Neural Crest Cell (NCC) development explains RCPS craniofacial abnormalities...
March 2, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28332167/controlled-release-of-vanadium-from-a-composite-scaffold-stimulates-mesenchymal-stem-cell-osteochondrogenesis
#11
S D Schussler, K Uske, P Marwah, F W Kemp, J D Bogden, S S Lin, Treena Livingston Arinzeh
Large bone defects often require the use of autograft, allograft, or synthetic bone graft augmentation; however, these treatments can result in delayed osseous integration. A tissue engineering strategy would be the use of a scaffold that could promote the normal fracture healing process of endochondral ossification, where an intermediate cartilage phase is later transformed to bone. This study investigated vanadyl acetylacetonate (VAC), an insulin mimetic, combined with a fibrous composite scaffold, consisting of polycaprolactone with nanoparticles of hydroxyapatite and beta-tricalcium phosphate, as a potential bone tissue engineering scaffold...
March 22, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28331459/heterotopic-ossification-of-the-calvarium-following-bilateral-craniectomies-in-traumatic-brain-injury
#12
Rafael A Vega, Leslie Hutchins
BACKGROUND: Heterotopic ossification (HO) is defined as ectopic bone formation following traumatic brain injury. Patients typically develop lesions in the hips, knees, and elbows that cause pain, restricted range of motion, nerve impingement, and pressure ulcers. CASE REPORT: We report an unusual presentation of HO in an 18-year-old male who was involved in a motor vehicle accident and subsequently developed malignant intracranial pressure. His HO developed following bilateral craniectomies in which 2 different dural substitutes were used...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28331138/delayed-expression-of-circulating-tgf-%C3%AE-1-and-bmp-2-levels-in-human-nonunion-long-bone-fracture-healing
#13
Yoshiaki Hara, Mohammad Ghazizadeh, Hajime Shimizu, Hisashi Matsumoto, Nobuyuki Saito, Takanori Yagi, Kazuki Mashiko, Kunihiro Mashiko, Makoto Kawai, Hiroyuki Yokota
BACKGROUND: The healing process of bone fracture requires a well-controlled multistage and sequential order beginning immediately after the injury. However, complications leading to nonunion exist, creating serious problems and costs for patients. Transforming growth factor-beta 1 (TGF-β1) and bone morphogenic protein 2 (BMP-2) are two major growth factors involved in human bone fracture healing by promoting various stages of bone ossification. In this study, we aimed to determine the role of these factors during the fracture healing of human long bones and assess their impacts on nonunion condition...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28329522/multiple-miliary-osteoma-cutis-of-the-face-associated-with-albright-hereditary-osteodystrophy-in-the-setting-of-acne-vulgaris-a-case-report
#14
Joseph V Caravaglio, Rema Gupta, David Weinstein
Osteoma cutis is a condition characterized by theformation of bone within the skin. Such aberrantossification of the skin and subcutaneous tissue isconsidered primary when it arises in the absence ofunderlying tissue damage or a preceding cutaneouslesion. Conversely, secondary osteoma cutis occurswhen skin ossification is the result of a pre-existingskin lesion, trauma, or inflammatory process [1,2].Although rare, primary osteoma cutis has beenassociated with a number of different geneticdisorders. Albright hereditary osteodystrophy (AHO),a condition first described in 1942 by Fuller Albright,is an autosomal dominant metabolic disorder causedby a mutation in the GNAS1 gene [3]...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329496/petrified-ear-a-case-report-and-review-of-the-literature
#15
Emma Weiss, Catherine A Degesys, Christopher M Stroud
Petrified ear is the transformation of normal, flexibleauricular cartilage into rigid, immobile auricularcartilage due to abnormal calcification or ossification.Etiologies of petrified ear include tissue injury,systemic endocrine diseases, congenital disorders,or petrified ear of unknown origin. We present a caseof a 69-year-old male with a one-month history ofnon-painful rigidity of the right ear that was found tohave petrified ear of unknown etiology confirmed byradiography.
February 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328846/prevalence-of-complications-after-surgery-in-treatment-for-cervical-compressive-myelopathy-a-meta-analysis-for-last-decade
#16
Tao Wang, Xiao-Ming Tian, Si-Kai Liu, Hui Wang, Ying-Ze Zhang, Wen-Yuan Ding
PURPOSE: We aim to perform a meta-analysis on prevalence of all kinds of operation-related complications following surgery treating cervical compressive myelopathy (CCM) and to provide reference for surgeons making surgical plan. METHODS: An extensive search of literature was performed in PubMed/MEDLINE, Embase, the Cochrane library, CNKI, and WANFANG databases on incidence of operation-related complications from January 2007 to November 2016. Data was calculated and data analysis was conducted with STATA 12...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28328009/microenvironmental-factors-that-regulate-mesenchymal-stem-cells-lessons-learned-from-the-study-of-heterotopic-ossification
#17
REVIEW
Chen Kan, Lijun Chen, Yangyang Hu, Haimei Lu, Yuyun Li, John A Kessler, Lixin Kan
Bone marrow contains a non-hematopoietic, clonogenic, multipotent population of stromal cells that are later called mesenchymal stem cells (MSC). Similar cells that share many common features with MSC are also found in other organs, which are thought to contribute both to normal tissue regeneration and to pathological processes such as heterotopic ossification (HO), the formation of ectopic bone in soft tissue. Understanding the microenvironmental factors that regulate MSC in vivo is essential both for understanding the biology of the stem cells and for effective translational applications of MSC...
March 22, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28326638/intervertebral-disc-calcification-with-ossification-of-the-posterior-longitudinal-ligament
#18
Kaori Mizukawa, Takako Kobayashi, Nobuharu Yamada, Takahisa Hirota
A 6-year-old girl presented to hospital with a 4 day history of increasing neck pain. White blood cell count was normal with slightly raised C-reactive protein. The patient had a limited range of neck movement, and experienced enhanced pain with neck extension. X-ray and cervical computed tomography (CT) confirmed the diagnosis of cervical intervertebral disc calcification (IDC) and IDC with ossification of the posterior longitudinal ligament (OPLL), respectively. The symptoms improved after approximately 1 week following rest and oral acetaminophen...
March 21, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28324185/diameters-and-bone-thickness-at-the-margin-of-the-foramen-magnum-in-dry-skulls-from-pediatric-population-a-cross-sectional-anatomical-study
#19
Marina Raguz, Pero Hrabac, Dora Sedmak, Miroslav Gjurasin, Natasa Kovacic
PURPOSE: The purpose of the study was to estimate the size and bone thickness at the margin of the foramen magnum in a pediatric population. METHODS: Sixty occipital bone specimens from the collection of macerated skulls at the Department of Anatomy, University of Zagreb, were examined and measured using a vernier scale/caliper. For the purpose of analysis, specimens were divided into two age groups: 1-6 years and 7-18 years of age (before and after the fusion of ossification centers in the occipital bone)...
March 21, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28323910/progressive-development-of-pth-resistance-in-patients-with-inactivating-mutations-on-the-maternal-allele-of-gnas
#20
Alessia Usardi, Asmaa Mamoune, Elodie Nattes, Jean-Claude Carel, Anya Rothenbuhler, Agnès Linglart
Background: PTH resistance is characterized by hypocalcaemia, hyperphosphatemia and elevated PTH in absence of vitamin D deficiency. Pseudohypoparathyroidism (PHP) type 1A (or iPPSD2, inactivating Signaling PTH/PTHrp Disorder 2 according to the new classification) is caused by mutations in the maternal GNAS allele. Objective: To assess PTH resistance over time in 20 patients affected by iPPSD2 (PHP1A), diagnosed because of family history, ectopic ossification or short stature and carrying a GNAS mutation...
February 21, 2017: Journal of Clinical Endocrinology and Metabolism
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