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Orthopedic stem cell

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https://www.readbyqxmd.com/read/28229387/the-effects-of-cerium-valence-states-at-cerium-oxide-coatings-on-the-responses-of-bone-mesenchymal-stem-cells-and-macrophages
#1
Mingyu You, Kai Li, Youtao Xie, Liping Huang, Xuebin Zheng
Ideal orthopedic coatings should trigger good osteogenic response and limited inflammatory response. The cerium valence states in ceria are associated with their anti-oxidative activity and anti-inflammatory property. In the study, we prepared two kinds of plasma sprayed CeO2 coatings with different Ce(4+) concentrations to investigate the effects of Ce valence states on the response of bone mesenchymal stem cells (BMSCs) and macrophage RAW264.7. Both the coatings (CeO2-A and CeO2-B) were characterized via XRD, SEM, and X-ray photoelectron spectroscopy...
February 22, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28223547/cabozantinib-targets-bone-microenvironment-modulating-human-osteoclast-and-osteoblast-functions
#2
Marco Fioramonti, Daniele Santini, Michele Iuliani, Giulia Ribelli, Paolo Manca, Nicola Papapietro, Filippo Spiezia, Bruno Vincenzi, Vincenzo Denaro, Antonio Russo, Giuseppe Tonini, Francesco Pantano
Cabozantinib, a c-MET and vascular endothelial growth factor receptor 2 inhibitor, demonstrated to prolong progression free survival and improve skeletal disease-related endpoints in castration-resistant prostate cancer and in metastatic renal carcinoma. Our purpose is to investigate the direct effect of cabozantinib on bone microenvironment using a total human model of primary osteoclasts and osteoblasts.Osteoclasts were differentiated from monocytes isolated from healthy donors; osteoblasts were derived from human mesenchymal stem cells obtained from bone fragments of orthopedic surgery patients...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28194374/regenerative-potential-of-the-cartilaginous-tissue-in-mesenchymal-stem-cells-update-limitations-and-challenges
#3
Ivana Beatrice Mânica da Cruz, Antônio Lourenço Severo, Verônica Farina Azzolin, Luiz Filipe Machado Garcia, André Kuhn, Osvandré Lech
Advances in the studies with adult mesenchymal stem cells (MSCs) have turned tissue regenerative therapy into a promising tool in many areas of medicine. In orthopedics, one of the main challenges has been the regeneration of cartilage tissue, mainly in diarthroses. In the induction of the MSCs, in addition to cytodifferentiation, the microenvironmental context of the tissue to be regenerated and an appropriate spatial arrangement are extremely important factors. Furthermore, it is known that MSC differentiation is fundamentally determined by mechanisms such as cell proliferation (mitosis), biochemical-molecular interactions, movement, cell adhesion, and apoptosis...
January 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28191766/concise-review-mesenchymal-stem-cell-therapy-for-pediatric-disease-perspectives-on-success-and-potential-improvements
#4
Christopher R Nitkin, Tracey L Bonfield
Mesenchymal stem cells (MSCs) represent a potentially revolutionary therapy for a wide variety of pediatric diseases, but the optimal cell-based therapeutics for such diversity have not yet been specified. The published clinical trials for pediatric pulmonary, cardiac, orthopedic, endocrine, neurologic, and hematologic diseases provide evidence that MSCs are indeed efficacious, but the significant heterogeneity in therapeutic approaches between studies raises new questions. The purpose of this review is to stimulate new preclinical and clinical trials to investigate these factors...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28169513/multilayer-nanoscale-encapsulation-of-biofunctional-peptides-to-enhance-bone-tissue-regeneration-in-vivo
#5
Piergiorgio Gentile, Ana Marina Ferreira, Jill T Callaghan, Cheryl A Miller, Joss Atkinson, Christine Freeman, Paul V Hatton
Bone tissue healing is a dynamic process that is initiated by the recruitment of osteoprogenitor cells followed by their migration, proliferation, differentiation, and development of a mineralizing extracellular matrix. The work aims to manufacture a functionalized porous membrane that stimulates early events in bone healing for initiating a regenerative cascade. Layer-by-layer (LbL) assembly is proposed to modify the surface of osteoconductive electrospun meshes, based on poly(lactic-co-glycolic acid) and nanohydroxyapatite, by using poly(allylamine hydrochloride) and poly(sodium 4-styrenesulfonate) as polyelectrolytes...
February 7, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28165799/the-balance-between-proliferation-and-transcription-of-angiogenic-factors-of-mesenchymal-stem-cells-in-hypoxia
#6
Arina T Buizer, Sjoerd K Bulstra, Albert G Veldhuizen, Roel Kuijer
Bridging large bone defects with mesenchymal stromal cells-seeded scaffolds remains a big challenge in orthopedic surgery, due to the lack of vascularization. Within such a cell-scaffold construct cells are exposed to ischemic conditions. When human mesenchymal stem cells (hMSCs) encounter hypoxic conditions, they show higher cell proliferation than at ambient oxygen levels. However, when hMSCs are exposed to prolonged ischemia, cell proliferation ceases completely. Exposure of hMSCs to hypoxic conditions is known to result in the transcription of angiogenic factors (AGF), which can promote the development of a new blood vessels...
February 6, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28144608/the-current-perspectives-of-stem-cell-therapy-in-orthopedic-surgery
#7
REVIEW
Serkan Akpancar, Oner Tatar, Hasan Turgut, Faruk Akyildiz, Safak Ekinci
CONTEXT: Musculoskeletal injuries may be painful, troublesome, life limiting and also one of the global health problems. There has been considerable amount of interest during the past two decades to stem cells and tissue engineering techniques in orthopedic surgery, especially to manage special and compulsive injuries within the musculoskeletal system. EVIDENCE ACQUISITION: The aim of this study was to present a literature review regarding the most recent progress in stem cell procedures and current indications in orthopedics clinical care practice...
December 2016: Archives of Trauma Research
https://www.readbyqxmd.com/read/28143470/current-use-of-autologous-adipose-tissue-derived-stromal-vascular-fraction-cells-for-orthopedic-applications
#8
REVIEW
Jaewoo Pak, Jung Hun Lee, Kwang Seung Park, Moonhee Park, Lin-Woo Kang, Sang Hee Lee
Autologous adipose stromal vascular fractions (SVFs) containing adipose tissue-derived stem cells (ASCs) are currently being used in clinical settings for various orthopedic applications for human patients. Due to its potential capability of regenerating cartilage, bone, and tendons, autologous adipose SVFs are being tried in treating patients with osteoarthritis (OA), chondromalacia, meniscus tear, osteonecrosis of the femoral head, and tendon injuries. Here, we have reviewed available human clinical studies with regard to patient applications of autologous adipose SVF containing ASCs, specifically assessing effectiveness and safety in the field of orthopedic disorders...
January 31, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28112235/nanoscale-topography-on-black-titanium-imparts-multi-biofunctional-properties-for-orthopedic-applications
#9
Jafar Hasan, Shubham Jain, Kaushik Chatterjee
We have developed a chlorine based reactive ion etching process to yield randomly oriented anisotropic nanostructures that render the titanium metal surface 'black' similar to that of black silicon. The surface appears black due to the nanostructures in contrast to the conventional shiny surface of titanium. The nanostructures were found to kill bacteria on contact by mechanically rupturing the cells as has been observed previously on wings of certain insects. The etching was optimized to yield nanostructures of ≈1 μm height for maximal bactericidal efficiency without compromising cytocompatibility...
January 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098961/angiogenic-and-osteogenic-regeneration-in-rats-via-calcium-phosphate-scaffold-and-endothelial-cell-coculture-with-hbmscs-hucmscs-hipsc-mscs-and-hesc-mscs
#10
Wenchuan Chen, Xian Liu, Qianmin Chen, Chongyun Bao, Liang Zhao, Zhimin Zhu, Hockin H K Xu
Angiogenesis is a limiting factor in regenerating large bone defects. The objective of this study was to investigate angiogenic and osteogenic effects of coculture on calcium phosphate cement (CPC) scaffold using human umbilical vein endothelial cells (hUVECs) and mesenchymal stem cells (MSCs) from different origins for the first time. hUVECs were cocultured with four types of cells: human umbilical cord MSCs (hUCMSCs), human bone marrow MSCs (hBMSCs), and MSCs from induced pluripotent stem cells (hiPSC-MSCs) and embryonic stem cells (hESC-MSCs)...
January 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28093363/alignment-of-collagen-fiber-in-knitted-silk-scaffold-for-functional-massive-rotator-cuff-repair
#11
Zefeng Zheng, Jisheng Ran, Weishan Chen, Yejun Hu, Ting Zhu, Xiao Chen, Zi Yin, Boon Chin Heng, Gang Feng, Huihui Le, Chenqi Tang, Jiayun Huang, Yangwu Chen, Yiting Zhou, Pioletti Dominique, Weiliang Shen, Hong-Wei Ouyang
: Rotator cuff tear is one of the most common types of shoulder injuries, often resulting in pain and physical debilitation. Allogeneic tendon-derived decellularized matrices do not have appropriate pore size and porosity to facilitate cell infiltration, while commercially-available synthetic scaffolds are often inadequate at inducing tenogenic differentiation. The aim of this study is to develop an advanced 3D aligned collagen/silk scaffold (ACS) and investigate its efficacy in a rabbit massive rotator cuff tear model...
January 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28018908/partial-cranial-cruciate-ligament-tears-treated-with-stem-cell-and-platelet-rich-plasma-combination-therapy-in-36-dogs-a-retrospective-study
#12
Sherman O Canapp, Christopher S Leasure, Catherine Cox, Victor Ibrahim, Brittany J Carr
OBJECTIVE: To evaluate outcomes in 36 dogs with a partial cranial cruciate ligament (CCL) tear treated with autologous bone marrow aspirate concentrate (BMAC) or adipose-derived progenitor cells (ADPC) with platelet-rich plasma (PRP) combination. MATERIALS AND METHODS: Medical records of client-owned dogs diagnosed with an early partial (≤50%) tear of the craniomedial band of the CCL that was treated with BMAC-PRP or ADPC-PRP were reviewed from 2010 to 2015. Signalment, medical history, physical and orthopedic examination, objective temporospatial gait analyses, radiographs, day 0 and day 90 diagnostic arthroscopy findings, treatment, and outcome were among the data collected...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/27998240/superparamagnetic-iron-oxide-nanoparticles-in-musculoskeletal-biology
#13
Shama R Iyer, Su Xu, Joseph P Stains, Craig H Bennett, Richard M Lovering
The use of platelet-rich plasma and mesenchymal stem cells has garnered much attention in orthopedic medicine, focusing on the biological aspects of cell function. However, shortly after systemic delivery, or even a local injection, few of the transplanted stem cells or platelets remain at the target site. Improvement in delivery, and the ability to track and monitor injected cells, would greatly improve clinical translation. Nanoparticles can effectively and quickly label most cells in vitro, and evidence to date suggests such labeling does not compromise the proliferation or differentiation of cells...
January 11, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/27987073/comparison-of-four-protocols-to-generate-chondrocyte-like-cells-from-human-induced-pluripotent-stem-cells-hipscs
#14
Wiktoria Maria Suchorska, Ewelina Augustyniak, Magdalena Richter, Tomasz Trzeciak
Stem cells (SCs) are a promising approach to regenerative medicine, with the potential to treat numerous orthopedic disorders, including osteo-degenerative diseases. The development of human-induced pluripotent stem cells (hiPSCs) has increased the potential of SCs for new treatments. However, current methods of differentiating hiPSCs into chondrocyte-like cells are suboptimal and better methods are needed. The aim of the present study was to assess four different chondrogenic differentiation protocols to identify the most efficient method of generating hiPSC-derived chondrocytes...
December 16, 2016: Stem Cell Reviews
https://www.readbyqxmd.com/read/27986082/mesenchymal-stem-cells-as-therapeutic-target-of-biophysical-stimulation-for-the-treatment-of-musculoskeletal-disorders
#15
REVIEW
Marco Viganò, Valerio Sansone, Maria Cristina d'Agostino, Pietro Romeo, Carlotta Perucca Orfei, Laura de Girolamo
BACKGROUND: Musculoskeletal disorders are regarded as a major cause of worldwide morbidity and disability, and they result in huge costs for national health care systems. Traditional therapies frequently turned out to be poorly effective in treating bone, cartilage, and tendon disorders or joint degeneration. As a consequence, the development of novel biological therapies that can treat more effectively these conditions should be the highest priority in regenerative medicine. Mesenchymal stem cells (MSCs) represent one of the most promising tools in musculoskeletal tissue regenerative medicine, thanks to their proliferation and differentiation potential and their immunomodulatory and trophic ability...
December 16, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27932702/incorporation-of-cerium-oxide-into-hydroxyapatite-coating-regulates-osteogenic-activity-of-mesenchymal-stem-cell-and-macrophage-polarization
#16
Kai Li, Qingyi Shen, Youtao Xie, Mingyu You, Liping Huang, Xuebin Zheng
Biomedical coatings for orthopedic implants should facilitate osseointegration and mitigate implant-induced inflammatory reactions. Cerium oxide (CeO2) ceramics possess anti-oxidative properties and can be used to decrease mediators of inflammation, which makes them attractive for biomedical applications. In our work, two kinds of CeO2 incorporated hydroxyapatite coatings (HA-10Ce and HA-30Ce) were prepared via plasma spraying technique and the effects of CeO2 addition on the responses of bone mesenchymal stem cells (BMSCs) and RAW264...
February 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/27895107/long-noncoding-rna-h19-accelerates-tenogenic-differentiation-and-promotes-tendon-healing-through-targeting-mir-29b-3p-and-activating-tgf-%C3%AE-1-signaling
#17
Ying-Fei Lu, Yang Liu, Wei-Ming Fu, Jia Xu, Bin Wang, Yu-Xin Sun, Tian-Yi Wu, Liang-Liang Xu, Kai-Ming Chan, Jin-Fang Zhang, Gang Li
Tendon injures are common orthopedic conditions, but tendon development and the pathogenesis of tendon injures, such as tendinopathy, remain largely unknown and have limited the development of clinical therapy. Studies on tenogenic differentiation at the molecular level may help in developing novel therapeutic strategies. As novel regulators, long noncoding RNAs (lncRNAs) have been found to have widespread biological functions, and emerging evidence demonstrates that lncRNAs may play important regulatory roles in cell differentiation and tissue regeneration...
November 28, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27889558/the-periosteal-microcirculation-in-health-and-disease-an-update-on-clinical-significance
#18
REVIEW
Andrea Szabó, Ágnes Janovszky, Levente Pócs, Mihály Boros
Apart from its nutritive functions, the periosteum critically affects bone regeneration via its stem/osteoprogenitor cell content. Normal healing after bone fractures, trauma-orthopedic interventions and invasive dental procedures is critically linked to the reestablishment of the periosteal microcirculation, but the reconstruction, replacement or repair of lost tissues may also be performed with autologous periosteum. Besides the initiation of cell differentiation during bone repair and remodeling processes, the periosteum together with the endosteum plays significant roles in the pathogenesis of both hormone-related and trauma-induced osteoporotic alterations in the bone metabolism...
November 23, 2016: Microvascular Research
https://www.readbyqxmd.com/read/27871421/mesenchymal-stem-cell-bearing-sutures-for-tendon-repair-and-healing-in-the-foot-and-ankle
#19
REVIEW
Eric W Tan, Lew C Schon
Improving the quality and strength of soft tissue repairs remains an important area of orthopedic research and innovation. The need for immobilization and early motion is an important balance essential for the successful treatment of tendon repair and reconstruction. Mesenchymal stem cell (MSC)-bearing sutures represent an emerging biological augmentation to traditional suture repair. Two previous large studies using stem cell sutures in rat Achilles tendon models have demonstrated early increased biomechanical strength and significantly increased ultimate failure strength...
December 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27822310/anaphylactic-shock-during-cement-implantation-of-a-total-hip-arthroplasty-in-a-patient-with-underlying-mastocytosis-case-report-of-a-rare-intraoperative-complication
#20
Anita Ten Hagen, Pieter Doldersum, Tom van Raaij
BACKGROUND: Cemented total hip arthroplasty (THA) is a safe and common procedure. In rare cases life threatening bone cement implantation syndrome (BCIS) may occur, which is commonly caused by pulmonary embolism (PE). CASE PRESENTATION: We describe the rare case of a 70-year old patient who underwent an elective total hip replacement. Before surgery he was diagnosed with underlying systemic indolent mastocytosis, a rare pathological disorder that may result in anaphylaxis after massive systemic mast cell activation...
2016: Patient Safety in Surgery
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