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https://www.readbyqxmd.com/read/29233995/adeno-associated-virus-serotype-rh10-is-a-useful-gene-transfer-vector-for-sensory-nerves-that-innervate-bone-in-immunodeficient-mice
#1
Sun H Park, Matthew R Eber, Shunsuke Tsuzuki, Mary E Booker, Aaron G Sunil, D Brooke Widner, Renee A Parker, Christopher M Peters, Yusuke Shiozawa
Adeno-associated virus (AAV) is frequently used to manipulate gene expression in the sensory nervous system for the study of pain mechanisms. Although some serotypes of AAV are known to have nerve tropism, whether AAV can distribute to sensory nerves that innervate the bone or skeletal tissue has not been shown. This information is crucial, since bone pain, including cancer-induced bone pain, is an area of high importance in pain biology. In this study, we found that AAVrh10 transduces neurons in the spinal cord and dorsal root ganglia of immunodeficient mice with higher efficacy than AAV2, 5, 6, 8, and 9 when injected intrathecally...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29230181/calvarial-suture-derived-stem-cells-and-their-contribution-to-cranial-bone-repair
#2
REVIEW
Daniel H Doro, Agamemnon E Grigoriadis, Karen J Liu
In addition to the natural turnover during life, the bones in the skeleton possess the ability to self-repair in response to injury or disease-related bone loss. Based on studies of bone defect models, both processes are largely supported by resident stem cells. In the long bones, the source of skeletal stem cells has been widely investigated over the years, where the major stem cell population is thought to reside in the perivascular niche of the bone marrow. In contrast, we have very limited knowledge about the stem cells contributing to the repair of calvarial bones...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29227579/obesity-type-2-diabetes-increases-inflammation-periosteal-reactive-bone-formation-and-osteolysis-during-staphylococcus-aureus-implant-associated-bone-infection
#3
Christopher W Farnsworth, Eric M Schott, Abigail M Benvie, Jacob Zukoski, Stephen L Kates, Edward M Schwarz, Steven R Gill, Michael J Zuscik, Robert A Mooney
Obese and type 2 diabetic (T2D) patients have a 5-fold increased rate of infection following placement of an indwelling orthopaedic device. Though implant infections are associated with inflammation, periosteal reactive bone formation and osteolysis, the effect of obesity/T2D on these complicating factors has not been studied. To address this question, C57BL/6J mice were fed a high fat diet (60% Kcal from fat) to induce obesity/T2D, or a control diet (10% Kcal from fat) for three months, and challenged with a transtibial pin coated with a bioluminescent USA300 strain of S...
December 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29226261/coordination-of-early-cellular-reactions-during-activation-of-bone-resorption-in-the-rat-mandible-periosteum-an-immunohistochemical-study
#4
Bassam Hassan, Isabelle Fouilloux, Brigitte Baroukh, Annie Llorens, Martin Biosse Duplan, Marjolaine Gosset, Marc Cherruau, Jean-Louis Saffar
The activation step of bone remodeling remains poorly characterized. Activation comprises determination of the site to be remodeled, osteoclast precursor recruitment, their migration to the site of remodeling, and differentiation. These actions involve different compartments and cell types. The aim of this study was to investigate events and cell types involved during activation. We used a bone remodeling model in rats where extractions of the upper jaw molars initiate remodeling of the antagonist lower jaw (mandible) cortex along the periosteum...
October 2017: Heliyon
https://www.readbyqxmd.com/read/29224771/revision-repair-of-type-iv-laryngotracheoesophageal-cleft-using-multiple-long-tapered-engaging-grafts
#5
Evan J Propst
An 8 year-old female with esophageal atresia and a type IV laryngotracheoesophageal cleft underwent tracheostomy, gastric pull-up and fundoplication with G-tube insertion at birth. She remained nil per os due to aspiration. The trachealis was separated from the esophagus that was reapproximated and clavicular periosteum was placed. A long posterior costal cartilage graft that engaged behind the cricoid plate and tapered inferiorly was inserted. A second thin cartilage graft was sutured to it distally to extend the length of the repair...
December 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29207466/evaluation-of-poly-lactic-co-glycolic-acid-alone-or-in-combination-with-hydroxyapatite-on-human-periosteal-cells-bone-differentiation-and-in-sinus-lift-treatment
#6
Gabriele Ceccarelli, Rossella Presta, Saturnino Marco Lupi, Nefele Giarratana, Nora Bloise, Laura Benedetti, Maria Gabriella Cusella De Angelis, Ruggero Rodriguez Y Baena
Most recent advances in tissue engineering in the fields of oral surgery and dentistry have aimed to restore hard and soft tissues. Further improvement of these therapies may involve more biological approaches and the use of dental tissue stem cells in combination with inorganic/organic scaffolds. In this study, we analyzed the osteoconductivity of two different inorganic scaffolds based on poly (lactic-co-glycolic) acid alone (PLGA-Fisiograft) or in combination with hydroxyapatite (PLGA/HA-Alos) in comparison with an organic material based on equine collagen (PARASORB Sombrero) both in vitro and in vivo...
December 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29200953/effects-of-osteogenic-conditioned-medium-from-human-periosteum-derived-cells-on-osteoclast-differentiation
#7
Hyun-Chang Park, Young-Bum Son, Sung-Lim Lee, Gyu-Jin Rho, Young-Hoon Kang, Bong-Wook Park, Sung-Hoon Byun, Sun-Chul Hwang, In-Ae Cho, Yeong-Cheol Cho, Iel-Yong Sung, Dong Kyun Woo, June-Ho Byun
Stem/progenitor cell-based regenerative medicine using the osteoblast differentiation of mesenchymal stem cells (MSCs) is regarded as a promising approach for the therapeutic treatment of various bone defects. The effects of the osteogenic differentiation of stem/progenitor cells on osteoclast differentiation may have important implications for use in therapy. However, there is little data regarding the expression of osteoclastogenic proteins during osteoblastic differentiation of human periosteum-derived cells (hPDCs) and whether factors expressed during this process can modulate osteoclastogenesis...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29189415/bone-formation-using-cross-linked-chitosan-scaffolds-in-rat-calvarial-defects
#8
Chang-Kai Chen, Nai-Jen Chang, Yung-Tsan Wu, Earl Fu, E-Chin Shen, Chien-Wei Feng, Zhi-Hong Wen
PURPOSE: To investigate the osteoconductive effect of a chitosan scaffold in a rat skull defect model. Previous publications have demonstrated the osteoinductive properties as scaffold materials with growth factors; however, whether chitosan alone has osteoconductive ability is unclear. This study used cross-linked chitosan scaffolds for in vivo evaluation of scaffold-supported bone regeneration in rat calvarial defects using histopathological analysis and examination of alkaline phosphatase (ALP), calcium, phosphorus, and calcitonin serum levels...
November 16, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29182679/the-extracellular-matrix-protein-edil3-stimulates-osteoblast-differentiation-through-the-integrin-%C3%AE-5%C3%AE-1-erk-runx2-pathway
#9
Sin-Hye Oh, Jung-Woo Kim, Yuri Kim, Mi Nam Lee, Min-Suk Kook, Eun Young Choi, Suhn-Young Im, Jeong-Tae Koh
Epidermal growth factor-like repeats and discoidin I-like domain 3 (Edil3) is an extracellular matrix protein containing an Arg-Gly-Asp (RGD) motif that binds integrin. Recently, Edil3 has been implicated in various biological processes, including angiogenesis and cellular differentiation. It can inhibit inflammatory bone destruction. The objective of this study was to explore the role of Edil3 in osteoblast differentiation and its underlying molecular mechanisms. In wild-type mice, high expression levels of Edil3 mRNA were observed in isolated calvaria and tibia/femur bones...
2017: PloS One
https://www.readbyqxmd.com/read/29160341/dehiscences-and-fenestrations-methodological-care-necessary-to-avoid-errors-in-diagnosis-and-measurement
#10
Alberto Consolaro
The low prevalence of gingival recessions observed in orthodontic clinical practice may be assigned to the fact that in studies in which dehiscences and bone fenestrations are described as frequent, they were diagnosed based on: 1) dry skull studies; 2) areas with periosteal reflection together with flap; and 3) imaging techniques with low sensitivity to detect these defects, which have a delicate structure and function. In areas of pseudo-dehiscences and fenestrations, the periosteum and the alveolar cortical bone are very thin; also, they either have been removed during preparation of the dry specimens in the areas for analysis, or, alternatively, have not been investigated using an ideal imaging method...
September 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29148577/mouse-models-to-evaluate-the-role-of-estrogen-receptor-%C3%AE-in-skeletal-maintenance-and-adaptation
#11
REVIEW
Amanda M Rooney, Marjolein C H van der Meulen
Estrogen signaling and mechanical loading have individual and combined effects on skeletal maintenance and adaptation. Previous work investigating estrogen signaling both in vitro and in vivo using global estrogen receptor α (ERα) gene knockout mouse models has provided information regarding the role of ERα in regulating bone mass and adaptation to mechanical stimulation. However, these models have inherent limitations that confound interpretation of the data. Therefore, recent studies have focused on mice with targeted deletion of ERα from specific bone cells and their precursors...
November 17, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29144723/inorganic-strengthened-hydrogel-membrane-as-regenerative-periosteum
#12
Tianwen Xin, Yong Gu, Ruoyu Cheng, Jincheng Tang, Zhiyong Sun, Wenguo Cui, Liang Chen
Periosteum plays the pivotal role in neomineralization, vascularization and protection during bone tissue regeneration. However, many artificial periosteum focused only on protection and lacked of the osteogenesis and angiogenesis functional capacity. In this study, we developed a novelty inorganic strengthened gelatin hydrogel membrane via inorganic and organic co-cross-linked double network as artificial periosteum for enhancing the durable angiogenesis and osteogenesis in bone reconstruction. Mesoporous bioactive glass nanoparticles (MBGNs) chemically modified with photo-cross-linkable gelatin derivative (GelMA) were further incorporated into GelMA to fabricate an organic/inorganic co-cross-linked hydrogel membrane (GelMA-G-MBGNs)...
November 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29143345/lin28a-enhances-in-vitro-osteoblastic-differentiation-of-human-periosteum-derived-cells
#13
Jin-Ho Park, Bong-Wook Park, Young-Hoon Kang, Sung-Hoon Byun, Sun-Chul Hwang, Deok Ryong Kim, Dong Kyun Woo, June-Ho Byun
Despite a capacity for proliferation and an ability to differentiate into multiple cell types, in long-term culture and with ageing, stem cells show a reduction in growth, display a decrease in differentiation potential, and enter senescence without evidence of transformation. The Lin28a gene encodes an RNA-binding protein that plays a role in regulating stem cell activity, including self-renewal and differentiation propensity. However, the effect of the Lin28a gene on cultured human osteoprecursor cells is poorly understood...
November 16, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29127293/three-dimensional-printed-polylactic-acid-hydroxyapatite-composite-scaffolds-for-prefabricating-vascularized-tissue-engineered-bone-an-in-vivo-bioreactor-model
#14
Haifeng Zhang, Xiyuan Mao, Danyang Zhao, Wenbo Jiang, Zijing Du, Qingfeng Li, Chaohua Jiang, Dong Han
The repair of large bone defects with complex geometries remains a major clinical challenge. Here, we explored the feasibility of fabricating polylactic acid-hydroxyapatite (PLA-HA) composite scaffolds. These scaffolds were constructed from vascularized tissue engineered bone using an in vivo bioreactor (IVB) strategy with three-dimensional printing technology. Specifically, a rabbit model was established to prefabricate vascularized tissue engineered bone in two groups. An experimental group (EG) was designed using a tibial periosteum capsule filled with 3D printed (3DP) PLA-HA composite scaffolds seeded with bone marrow stromal cells (BMSCs) and crossed with a vascular bundle...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29107133/physeal-fractures-of-the-lower-leg-in-children-and-adolescents-therapeutic-results-pitfalls-and-suggested-management-protocol-based-on-the-experience-of-the-authors-and-contemporary-literature
#15
Marcin Karlikowski, Jerzy Sułko
INTRODUCTION: Physeal fractures in children frequently give rise to concerns about the condition of the growth plate. Our observations have proven that the dysfunction of the growth plate is less frequent complication in those cases than misdiagnosed interposition of the periosteum. The aim of this paper is to familiarize the readers with the issue of treatment of physeal fractures of the distal tibia and fibula in the growing skeleton. MATERIALS AND METHODS: We analyzed the group of 75 patients - children and adolescents - with surgically treated physeal fractures of the lower leg...
October 26, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/29101872/evaluation-of-the-bisphosphonate-effect-on-stem-cells-derived-from-jaw-bone-and-long-bone-rabbit-models-a-pilot-study
#16
Jun-Beom Park, Seung-Hyun Cho, InSoo Kim, Won Lee, Seung-Hwan Kang, Heesung Kim
BACKGROUND AND OBJECTIVE: Bisphosphonates have been widely used and the number of patients experiencing medication-related osteonecrosis of the jaw (MRONJ) has been increasing. This study was designed to evaluate the effect of zoledronate on stem cells derived from different tissues. DESIGN: Stem cells derived from four different tissues were compared using rabbit models (JPO: periosteum from the jaw bone (mandible), JBM: bone marrow from the jaw bone, LPO: periosteum from long bone (tibia), and LBM: bone marrow from long bone)...
October 31, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29082591/the-involvement-of-histone-methylation-in-osteoblastic-differentiation-of-human-periosteum-derived-cells-cultured-in-vitro-under-hypoxic-conditions
#17
Dae-Kwan Yoon, Ji-Sung Park, Gyu-Jin Rho, Hyeon-Jeong Lee, Iel-Yong Sung, Jang-Ho Son, Bong-Wook Park, Young-Hoon Kang, Sung-Hoon Byun, Sun-Chul Hwang, Dong Kyun Woo, Yeong-Cheol Cho, June-Ho Byun
Although oxygen concentrations affect the growth and function of mesenchymal stem cells (MSCs), the impact of hypoxia on osteoblastic differentiation is not understood. Likewise, the effect of hypoxia-induced epigenetic changes on osteoblastic differentiation of MSCs is unknown. The aim of this study was to examine the in vitro hypoxic response of human periosteum-derived cells (hPDCs). Hypoxia resulted in greater proliferation of hPDCs as compared with those cultured in normoxia. Further, hypoxic conditions yielded decreased expression of apoptosis- and senescence-associated genes by hPDCs...
October 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29077068/reg-gene-expression-in-periosteum-after-fracture-and-its-in-vitro-induction-triggered-by-il-6
#18
Yasuaki Tohma, Yoshiko Dohi, Ryogo Shobatake, Tomoko Uchiyama, Maiko Takeda, Shin Takasawa, Yasuhito Tanaka, Hajime Ohgushi
The periosteum is a thin membrane that surrounds the outer surface of bones and participates in fracture healing. However, the molecular signals that trigger/initiate the periosteal reaction are not well established. We fractured the rat femoral bone at the diaphysis and fixed it with an intramedullary inserted wire, and the expression of regenerating gene (Reg) I, which encodes a tissue regeneration/growth factor, was analyzed. Neither bone/marrow nor muscle showed RegI gene expression before or after the fracture...
October 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29072964/thoracoscopic-rib-resection-in-children
#19
Dheidan Mufreh Alshammari, Isabelle Talon, Julien Rod, Anne Schneider, Frederic Lavrand, Christian Piolat, Thomas Gelas, Frederic Hameury, Marina Sica, Philippe Gicquel, Valerie Flaum, François Becmeur
OBJECTIVE: The authors present a multicenter retrospective series of different benign rib lesions in children operated on using thoracoscopy. MATERIALS AND METHODS: Between 2005 and 2015, 17 rib resections were performed thoracoscopically, in four French departments of pediatric surgery. Of these 17 cases, 13 exostoses, 2 endochondromas, 1 synostosis, and 1 Cyriax's syndrome were noted. Inclusion criteria were benign tumors or rib anomalies such as synostosis, in children younger than the age of 18 years, and thoracoscopy...
October 26, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29065044/osteogenesis-of-crouzon-mutated-cells-in-a-murine-model
#20
Andre Alcon, Philipp Metzler, Jacob Eswarakumar, Alexander T Wilson, Derek M Steinbacher
Crouzon syndrome is an autosomal-dominant congenital disease due to a mutation in the fibroblast growth factor receptor 2 protein. The purpose of this study is to evaluate wound-healing potential of Crouzon osteoblasts and adipose-derived stem cells (ADSCs) in a murine model. Parietal skull defects were created in Crouzon and mature wild-type (WT) CD-1 mice. One group of WT and Crouzon mice were left untreated. Another group was transplanted with both WT and Crouzon adipose-derived stem cells. Additional groups compared the use of a fibrin glue scaffold and periosteum removal...
October 23, 2017: Journal of Craniofacial Surgery
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