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https://www.readbyqxmd.com/read/29134405/cell-type-specific-gene-expression-patterns-in-the-knee-cartilage-in-an-osteoarthritis-rat-model
#1
Michal Korostynski, Natalia Malek, Marcin Piechota, Katarzyna Starowicz
Osteoarthritis (OA) is a chronic degenerative disease that leads to joint failure, pain, and disability. Gene regulation is implicated as a driver of the imbalance between the expression of catabolic and anabolic factors that eventually leads to the degeneration of osteoarthritic cartilage. In our model, knee-joint OA was induced in male Wistar rats by intra-articular sodium monoiodoacetate (MIA) injections. Whole-genome microarrays were used to analyse the alterations in gene expression during the time-course of OA development (at 2, 14, and 28 days post-injection) in rat knee joints...
November 13, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/29132383/an-unusually-large-osteochondroma-of-the-mandibular-angle-a-case-report
#2
Ryosuke Abe, Ikuya Miyamoto, Hirotaka Sato, Daishi Saitou, Genki Yamaya, Hiroyuki Yamada
BACKGROUND: Osteochondroma is a benign bone tumor that can occur in both the mesenchymal and craniofacial bones. However, craniofacial osteochondromas are extremely rare, because the mandible develops by intramembranous ossification rather than by endochondral ossification. CASE PRESENTATION: The most common site of craniofacial osteochondroma is the mandibular condyle, followed by the coronoid process. In the present study, we have described the case of a 64-year-old Japanese man with an unusually large osteochondroma located on the internal angle of the mandibular body...
November 13, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29124078/demineralized-bone-matrix-to-augment-tendon-bone-healing-a-systematic-review
#3
Adam T Hexter, Catherine Pendegrass, Fares Haddad, Gordon Blunn
Background: Following injury to the rotator cuff and anterior cruciate ligament, a direct enthesis is not regenerated, and healing occurs with biomechanically inferior fibrous tissue. Demineralized bone matrix (DBM) is a collagen scaffold that contains growth factors and is a promising biological material for tendon and ligament repair because it can regenerate a direct fibrocartilaginous insertion via endochondral ossification. Purpose: To provide a comprehensive review of the literature investigating the use of DBM to augment tendon-bone healing in tendon repair and anterior cruciate ligament reconstruction (ACLR)...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29121926/quantitative-and-qualitative-aspects-of-standing-up-behavior-and-the-prevalence-of-osteochondrosis-in-warmblood-foals-on-different-farms-could-there-be-a-link
#4
E M van Grevenhof, A R D Gezelle Meerburg, M C van Dierendonck, A J M van den Belt, B van Schaik, P Meeus, W Back
BACKGROUND: Osteochondrosis (OC) is a common, clinically important joint disorder in which endochondral ossification is focally disturbed. Reduced blood supply to growing cartilage is considered an important cause of the condition, which has both genetic and environmental origins. Housing conditions can influence cartilage injury through peak-pressure changes during limb sliding. Additionally, circulatory perturbation can cause the avascular necrosis of cartilage. In this study, we evaluated the type and frequency of limb sliding during standing up and the occurrence of OC in foals aged up to 12 months on different farms...
November 9, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29113765/ossification-and-development-of-vertebrae-in-the-balkan-crested-newt-triturus-ivanbureschi-salamandridae-caudata
#5
Maja D Slijepčević, Mirela Ukropina, Branko Filipović, Ana Ivanović
Vertebral morphology, development, and evolution have been investigated for many decades, especially in the recent evo-devo era. Nevertheless, comparative data on development and ossification modes within the major tetrapod groups are scarce and frequently suffer from the use of a simplistic approach, resulting in simplistic generalizations about the formation of tetrapod vertebrae. Here, we describe the development and ossification of trunk vertebrae in Triturus ivanbureschi (Salamandridae, Caudata) and compare the results with published data on other related taxa...
October 4, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29108957/matrix-vesicles-from-chondrocytes-and-osteoblasts-their-biogenesis-properties-functions-and-biomimetic-models
#6
REVIEW
Massimo Bottini, Saida Mebarek, Karen L Anderson, Agnieszka Strzelecka-Kiliszek, Lukasz Bozycki, Ana Maria Sper Simão, Maytê Bolean, Pietro Ciancaglini, Joanna Bandorowicz Pikula, Slawomir Pikula, David Magne, Niels Volkmann, Dorit Hanein, José Luis Millán, Rene Buchet
BACKGROUND: Matrix vesicles (MVs) are released from hypertrophic chondrocytes and from mature osteoblasts, the cells responsible for endochondral and membranous ossification. Under pathological conditions, they can also be released from cells of non-skeletal tissues such as vascular smooth muscle cells. MVs are extracellular vesicles of approximately 100-300nm diameter harboring the biochemical machinery needed to induce mineralization. SCOPE OF THE REVIEW: The review comprehensively delineates our current knowledge of MV biology and highlights open questions aiming to stimulate further research...
November 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29107337/cd169-macrophages-are-critical-for-osteoblast-maintenance-and-promote-intramembranous-and-endochondral-ossification-during-bone-repair
#7
Lena Batoon, Susan Marie Millard, Martin Eduard Wullschleger, Corina Preda, Andy Chiu-Ku Wu, Simranpreet Kaur, Hsu-Wen Tseng, David Arthur Hume, Jean-Pierre Levesque, Liza Jane Raggatt, Allison Robyn Pettit
Osteal macrophages (osteomacs) contribute to bone homeostasis and regeneration. To further distinguish their functions from osteoclasts, which share many markers and growth factor requirements, we developed a rapid, enzyme-free osteomac enrichment protocol that permitted characterization of minimally manipulated osteomacs by flow cytometry. Osteomacs differ from osteoclasts in expression of Siglec1 (CD169). This distinction was confirmed using the CD169-diphtheria toxin (DT) receptor (DTR) knock-in model. DT treatment of naïve CD169-DTR mice resulted in selective and striking loss of osteomacs, whilst osteoclasts and trabecular bone area were unaffected...
October 22, 2017: Biomaterials
https://www.readbyqxmd.com/read/29106746/low-dose-lithium-regimen-enhances-endochondral-fracture-healing-in-osteoporotic-rodent-bone
#8
Kathak Vachhani, Cari Whyne, Yufa Wang, David Burns, Diane Nam
Osteoporotic bone fractures are highly prevalent and involve lengthy recovery. Lithium, commonly used in psychiatric medicine, inhibits glycogen synthase kinase-3β in the Wnt/β-catenin pathway, leading to up-regulation of osteogenesis. Our recent preclinical work demonstrated that a 20mg/kg lithium dose administered beginning 7 days post-fracture for 14 days optimally improved femoral fracture healing in healthy rats at 4 weeks post fracture (46% higher torsional strength). In this study, lithium treatment was evaluated for healing of osteoporotic bone fractures...
November 6, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29104492/pth-1-34-ameliorates-the-osteopenia-and-delayed-healing-of-stabilized-tibia-fracture-in-mice-with-achondroplasia-resulting-from-gain-of-function-mutation-of-fgfr3
#9
Hangang Chen, Xianding Sun, Liangjun Yin, Shuai Chen, Ying Zhu, Junlan Huang, Wanling Jiang, Bo Chen, Ruobin Zhang, Lin Chen, Mao Nie, Yangli Xie, Zhongliang Deng
Bone fracture healing is processed through multiple stages including the cartilaginous callus formation and its transition to bony callus. FGFR3 negatively regulates chondrogenesis and enhances osteogenesis during skeleton development. We previously found in mice carrying gain-of-function mutation of FGFR3 that FGFR3 delays the healing of un-stabilized fracture that heals mainly through endochondral ossification. Since fracture is regularly treated in clinics with rigid fixation, and stabilized fracture is healed largely through intramembranous ossification, we asked whether FGFR3, a key regulator of osteogenesis, also affect the regeneration of stabilized fracture...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29102319/wnt-signaling-pathway-correlates-with-ossification-of-the-spinal-ligament-a-microrna-array-and-immunohistochemical-study
#10
Takafumi Yayama, Kanji Mori, Noriaki Okumura, Kazuya Nishizawa, Kosuke Kumagai, Akira Nakamura, Shinji Imai
BACKGROUND: Ossification of the posterior longitudinal ligament or the ligamentum flavum parallels endochondral ossification. Cell differentiation at the ossification front is known to be important during this process, although the factors regulating its initiation and progression are still unclear. The purpose of this study was to identify factors important for the regulation of chondrocyte/osteoblast differentiation during spinal ossification. METHODS: Ligamentum flavum tissue was isolated from 25 patients who underwent decompressive surgery for cervical ossification of the posterior longitudinal ligament...
October 25, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29095481/biallelic-mutations-in-flnb-cause-a-skeletal-dysplasia-with-46-xy-gonadal-dysgenesis-by-activating-%C3%AE-catenin
#11
K Upadhyay, J Loke, V O, B Taragin, H Ostrer
Filamin B (FLNB) functions as a switch that can affect chrondrocyte development and endochondral bone formation through a series of signaling molecules and transcription factors that also affect Sertoli cell development. Here, we report a subject with a novel skeletal dysplasia and co-existing 46,XY gonadal dysgenesis and biallelic mutations in FLNB. Whole exome sequencing was performed to identify mutations. Quantitative qPCR and flow variant assays were performed to quantify RNA, proteins and phosphorylated proteins...
November 2, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/29091523/osteogenic-potential-of-caspases-related-to-endochondral-ossification
#12
Eva Janečková, Petra Bíliková, Eva Matalová
Caspases have functions particularly in apoptosis and inflammation. Increasing evidence indicates novel roles of these proteases in cell differentiation, including those involved in osteogenesis. This investigation provides a complex screening of osteogenic markers affected by pan caspase inhibition in micromass cultures derived from mouse forelimbs. PCR Array analysis showed significant alterations in expression of 49 osteogenic genes after 7 days of inhibition. The largest change was a decrease in CD36 expression, which was confirmed at organ level by caspase inhibition in cultured mouse ulnae followed by CD36 immunohistochemical analysis...
October 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29076702/endogenous-production-of-n-3-polyunsaturated-fatty-acids-promotes-fracture-healing-in-mice
#13
Yuhui Chen, He Cao, Dawei Sun, Changxin Lin, Liang Wang, Minjun Huang, Huaji Jiang, Zhongmin Zhang, Dadi Jin, Baiyu Zhang, Xiaochun Bai
Bone fracture is a global healthcare issue for high rates of delayed healing and nonunions. Although n-3 polyunsaturated fatty acid (PUFA) is considered as a beneficial factor for bone metabolism, only few studies till date focused on the effects of n-3 PUFAs on fracture healing. In this study, we investigated the effect of endogenous n-3 PUFAs on fracture healing by measuring femur fracture repair in both fat-1 transgenic mice and WT mice. Proximal femoral fracture model was established in fat-1 transgenic mice and WT mice, respectively, and then the fracture was analyzed by using X-ray, micro-computed tomography (micro-CT), and histological assessment at 7, 14, 21, 28, and 35 days after fixation...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29074299/angiopoietin-like-protein-2-promotes-chondrogenic-differentiation-during-bone-growth-as-a-cartilage-matrix-factor
#14
H Tanoue, J Morinaga, T Yoshizawa, M Yugami, H Itoh, T Nakamura, Y Uehara, T Masuda, H Odagiri, T Sugizaki, T Kadomatsu, K Miyata, M Endo, K Terada, H Ochi, S Takeda, K Yamagata, T Fukuda, H Mizuta, Y Oike
OBJECTIVE: Chondrocyte differentiation is crucial for long bone growth. Many cartilage extracellular matrix (ECM) proteins reportedly contribute to chondrocyte differentiation, indicating that mechanisms underlying chondrocyte differentiation are likely more complex than previously appreciated. Angiopoietin-like protein 2 (ANGPTL2) is a secreted factor normally abundantly produced in mesenchymal lineage cells such as adipocytes and fibroblasts, but its loss contributes to the pathogenesis of lifestyle- or aging-related diseases...
October 23, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29072695/glucocorticoid-mediates-prenatal-caffeine-exposure-induced-endochondral-ossification-retardation-and-its-molecular-mechanism-in-female-fetal-rats
#15
Yangfan Shangguan, Hongqiang Jiang, Zhengqi Pan, Hao Xiao, Yang Tan, Kai Tie, Jun Qin, Yu Deng, Liaobin Chen, Hui Wang
Our previous studies discovered that prenatal caffeine exposure (PCE) could induce intrauterine growth retardation (IUGR) and long-bone dysplasia in offspring rats, accompanied by maternal glucocorticoid over-exposure. This study is to explore whether intrauterine high glucocorticoid level can cause endochondral ossification retardation and clarify its molecular mechanism in PCE fetal rats. Pregnant Wistar rats were intragastrically administered 30 and 120 mg/kg day of caffeine during gestational days (GDs) 9-20, then collected fetal serum and femurs at GD20...
October 26, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29065587/endogenous-production-of-n-3-polyunsaturated-fatty-acids-promotes-fracture-healing-in-mice
#16
Yuhui Chen, He Cao, Dawei Sun, Changxin Lin, Liang Wang, Minjun Huang, Huaji Jiang, Zhongmin Zhang, Dadi Jin, Baiyu Zhang, Xiaochun Bai
Bone fracture is a global healthcare issue for high rates of delayed healing and nonunions. Although n-3 polyunsaturated fatty acid (PUFA) is considered as a beneficial factor for bone metabolism, only few studies till date focused on the effects of n-3 PUFAs on fracture healing. In this study, we investigated the effect of endogenous n-3 PUFAs on fracture healing by measuring femur fracture repair in both fat-1 transgenic mice and WT mice. Proximal femoral fracture model was established in fat-1 transgenic mice and WT mice, respectively, and then the fracture was analyzed by using X-ray, micro-computed tomography (micro-CT), and histological assessment at 7, 14, 21, 28, and 35 days after fixation...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29063236/identification-of-differentially-expressed-genes-regulated-by-molecular-signature-in-breast-cancer-associated-fibroblasts-by-bioinformatics-analysis
#17
Basavaraj Vastrad, Chanabasayya Vastrad, Anandkumar Tengli, Sudhir Iliger
OBJECTIVE: Breast cancer is a severe risk to public health and has adequately convoluted pathogenesis. Therefore, the description of key molecular markers and pathways is of much importance for clarifying the molecular mechanism of breast cancer-associated fibroblasts initiation and progression. Breast cancer-associated fibroblasts gene expression dataset was downloaded from Gene Expression Omnibus database. METHODS: A total of nine samples, including three normal fibroblasts, three granulin-stimulated fibroblasts and three cancer-associated fibroblasts samples, were used to identify differentially expressed genes (DEGs) between normal fibroblasts, granulin-stimulated fibroblasts and cancer-associated fibroblasts samples...
October 23, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29046415/skeletal-stiffening-in-an-amphibious-fish-out-of-water-is-a-response-to-increased-body-weight
#18
Andy J Turko, Dietmar Kültz, Douglas Fudge, Roger P Croll, Frank M Smith, Matthew R Stoyek, Patricia A Wright
Terrestrial animals must support their bodies against gravity, while aquatic animals are effectively weightless because of buoyant support from water. Given this evolutionary history of minimal gravitational loading of fishes in water, it has been hypothesized that weight-responsive musculoskeletal systems evolved during the tetrapod invasion of land and are thus absent in fishes. Amphibious fishes, however, experience increased effective weight when out of water - are these fishes responsive to gravitational loading? Contrary to the tetrapod-origin hypothesis, we found that terrestrial acclimation reversibly increased gill arch stiffness (∼60% increase) in the amphibious fish Kryptolebias marmoratus when loaded normally by gravity, but not under simulated microgravity...
October 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29044593/patterns-of-chondrification-and-ossification-in-the-skull-of-graptemys-pseudogeographica-the-false-map-turtle-emydidae
#19
Sharon C Danielson, Christopher A Sheil
Patterns of ossification and chondrification are well-described for several species of turtles, but details of the chondrocranial anatomy are known for only a handful of species. Cleared and double-stained embryos of Graptemys pseudogeographica were used to examine the fully formed chondrocranium and the formation, chondrification, and ossification of the cranium. The chondrocranium of G. pseudogeographica possesses an unusually large, irregularly shaped foramen epiphaniale that is joined with the fenestra olfactoria...
October 17, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29039630/impairment-of-the-chondrogenic-phase-of-endochondral-ossification-in-vivo-by-inhibition-of-cyclooxygenase-2
#20
M P Janssen, M M Caron, B van Rietbergen, D A Surtel, L W van Rhijn, T J Welting, P J Emans
Many studies have reported on the effects of cyclooxygenase-2 (COX-2) inhibition on osteogenesis. However, far less is known about the effects of COX-2 inhibition on chondrogenic differentiation. Previous studies conducted by our group show that COX-2 inhibition influences in vitro chondrogenic differentiation. Importantly, this might have consequences on endochondral ossification processes occurring in vivo, such as bone fracture healing, growth plate development and ectopic generation of cartilage. The goal of our study was to investigate, in vivo, the effect of COX-2 inhibition by celecoxib on the cartilaginous phase of three different endochondral ossification scenarios...
October 17, 2017: European Cells & Materials
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