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Bone morphogenic protein

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https://www.readbyqxmd.com/read/29154973/inhibition-of-bmp-signaling-overcomes-acquired-resistance-to-cetuximab-in-oral-squamous-cell-carcinomas
#1
Jinlong Yin, Ji-Eun Jung, Sun Il Choi, Sung Soo Kim, Young Taek Oh, Tae-Hoon Kim, Eunji Choi, Sun Joo Lee, Hana Kim, Eun Ok Kim, Yu Sun Lee, Hee Jin Chang, Joo Yong Park, Yeejeong Kim, Tak Yun, Kyun Heo, Youn-Jae Kim, Hyunggee Kim, Yun-Hee Kim, Jong Bae Park, Sung Weon Choi
Despite expressing high levels of the epidermal growth factor receptor (EGFR), a majority of oral squamous cell carcinoma (OSCC) patients show limited response to cetuximab and ultimately develop drug resistance. However, mechanism underlying cetuximab resistance in OSCC is not clearly understood. Here, using a mouse orthotopic xenograft model of OSCC, we show that BMP7-p-Smad1/5/8 signaling contributes to cetuximab resistance. Tumor cells isolated from the recurrent cetuximab-resistant xenograft models exhibited low EGFR expression but extremely high levels of phosphorylated Smad-1, -5, and -8 (p-Smad1/5/8)...
November 15, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29148922/feasibility-and-safety-of-using-thoracic-and-lumbar-cortical-bone-trajectory-pedicle-screws-in-spinal-constructs-in-children-technical-note
#2
Jonathan N Sellin, Jeffrey S Raskin, Kristen A Staggers, Alison Brayton, Valentina Briceño, Amee J Moreno, Andrew Jea
Thoracic and lumbar cortical bone trajectory pedicle screws have been described in adult spine surgery. They have likewise been described in pediatric CT-based morphometric studies; however, clinical experience in the pediatric age group is limited. The authors here describe the use of cortical bone trajectory pedicle screws in posterior instrumented spinal fusions from the upper thoracic to the lumbar spine in 12 children. This dedicated study represents the initial use of cortical screws in pediatric spine surgery...
November 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29146110/exploring-molecular-mechanism-of-bone-forming-capacity-of-eurycoma-longifolia-evidence-of-enhanced-expression-of-bone-related-biomarkers
#3
Hnin Ei Thu, Isa Naina Mohamed, Zahid Hussain, Ahmad Nazrun Shuid
BACKGROUND: Among the numerous well-documented medicinal herbs, Eurycoma longifolia (EL) has gained remarkable recognition due to its promising efficacy of stimulating bone formation in androgen-deficient osteoporosis. Though numerous animal studies have explored the bone-forming capacity of EL, the exact mechanism was yet to be explored. OBJECTIVES: The present study was aimed to investigate the mechanism of bone-forming capacity of EL using MC3T3-E1 as an in vitro osteoblastic model...
November 13, 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/29130662/-the-role-of-bone-morphogenic-protein-4-in-the-progression-of-vein-graft-hyperplastic-remodeling-under-hyperglycemic-condition
#4
Deng-Feng Fang, Hong-Wei Zhang, Jun Gu, Kang-Jun Fan, Huai-Min Liang, Jia-Yu Shen, Er-Yong Zhang, Jia Hu
OBJECTIVE: This study was designed to assess the vessel wall characteristics and the expression levels of bone morphogenic protein4(BMP4) and proliferating cell antigen Ki67 in vein grafts harvested from diabetic rats,and to investigate the role of BMP4 in progression of vein graft hyperplastic remodeling under hyperglycemic condition. METHODS: 48 male SpragueDawky rats [body mass (194±16) g] aged 8 weeks were randomly divided into diabetes mellitus (DM) group ( n=24) and nondiabetes mellitus (NDM) group ( n=24)...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29098380/bone-morphogenic-protein-2-use-in-revision-total-hip-arthroplasty-with-acetabular-defects
#5
Scott R Nodzo, Keely K Boyle, Sonja Pavlesen, Sridhar Rachala
INTRODUCTION: The restoration of acetabular bone stock during revision hip arthroplasty remains a challenge. There have been no clinical series reporting the efficacy of bone morphogenic protein-2 (rhBMP-2) in the revision hip setting. METHODS: We retrospectively reviewed the radiographs and records of 15 patients who received rhBMP-2 mixed with allograft bone chips (+BMP), and 14 who received allograft bone chips alone (-BMP) for their acetabular defect during revision total hip arthroplasty with a mean two-year follow up...
November 3, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29081505/serotonin-prevents-differentiation-into-brown-adipocytes-and-induces-trans-differentiation-into-white-adipocytes
#6
S Rozenblit-Susan, N Chapnik, O Froy
BACKGROUND/OBJECTIVES: Serotonin is synthesized by many cells in the periphery to affect vasoconstriction, intestinal motility, and glucose and lipid metabolism. It has recently been shown that serotonin leads to fat accumulation in white adipose tissue (WAT). However, the direct effect of serotonin on adipose tissue (BAT) differentiation and metabolism is limited. Therefore, our aim was to investigate the effect of serotonin on brown adipocyte metabolism and differentiation. METHODS: Non-differentiated HIB1B cells and differentiated HIB1B brown adipocytes were treated with serotonin and their metabolism and differentiation examined...
October 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29067541/bone-morphogenic-protein-2-rhbmp2-loaded-silk-fibroin-scaffolds-to-enhance-the-osteoinductivity-in-bone-tissue-engineering
#7
Guang-Yu Du, Sheng-Wei He, Chuan-Xiu Sun, Li-Dong Mi
There is an increasing demand for formulations of silk fibroin (SF) scaffolds in biomedical applications. SF was crosslinked via glutaraldehyde with osteoinductive recombinant human bone morphogenic protein-2 (rhBMP2) of different ratios viz. (i) 3% SF with no rhBMP2 (SF), (ii) 3% SF with equal amount of rhBMP2 (SF+BMP2), and (iii) 12% SF with 3% of rhBMP2 (4SF+BMP2), and these solutions were used in electrospinning-based fabrication of nanoscaffolds for evaluating increased osteoinductive potential of SF scaffolds with rhBMP2...
October 25, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29057341/early-clinical-and-radiological-results-of-unilateral-posterior-pedicle-instrumentation-through-a-wiltse-approach-with-lateral-lumbar-interbody-fusion
#8
Jerry Y Du, Paul D Kiely, Eric Bogner, Motasem Al Maaieh, Alexander Aichmair, Stephan N Salzmann, Russel C Huang
BACKGROUND: To assess the clinical outcomes of 44 patients who underwent single-level lateral lumbar interbody fusion (LLIF) with unilateral pedicle screw instrumentation through a paramedian Wiltse approach. METHODS: Demographic, comorbidity, clinical assessment, peri-operative, and complication data were assessed. Visual analog scale (VAS), Oswestry disability index (ODI), and short form-12 (SF-12) were used to assess clinical outcomes. Post-operative plain radiographs were assessed for subsidence, cage migration, and fusion...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29057340/lateral-lumbar-interbody-fusion-with-unilateral-pedicle-screw-fixation-for-the-treatment-of-adjacent-segment-disease-a-preliminary-report
#9
Jerry Y Du, Paul D Kiely, Motasem Al Maaieh, Alexander Aichmair, Russel C Huang
BACKGROUND: To assess the clinical outcomes of 20 patients who underwent single level unilateral pedicle screw fixation following lateral lumbar interbody fusion (LLIF) for treatment of lumbar adjacent segment disease (ASD). METHODS: Demographic, comorbidity, clinical assessment, peri-operative, and complication data were assessed. Visual analog scale (VAS), Oswestry disability index (ODI), and short form-12 (SF-12) were used to assess clinical outcomes. Post-operative radiographs were assessed for subsidence, cage migration, and fusion...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29044575/investigation-of-the-effect-of-astaxanthin-on-alveolar-bone-loss-in-experimental-periodontitis
#10
H Balci Yuce, A Lektemur Alpan, F Gevrek, H Toker
BACKGROUND AND OBJECTIVE: Astaxanthin is a keto-carotenoid that has a strong antioxidant effect. The purpose of this study was to evaluate the effects of astaxanthin on alveolar bone loss and histopathological changes in ligature-induced periodontitis in rats. MATERIAL AND METHODS: Wistar rats were divided into four experimental groups: non-ligated (C, n = 6); ligature only (L, n = 6); ligature and astaxanthin (1 mg/kg/day astaxanthin, AS1 group, n = 8); ligature and astaxanthin (5 mg/kg/day astaxanthin, AS5 group, n = 8)...
October 17, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29034587/open-fluidics-a-cell-culture-flow-system-developed-over-wettability-contrast-based-chips
#11
Nuno M Oliveira, Rui L Reis, João F Mano
Biological tissues are recurrently exposed to several dynamic mechanical forces that influence cell behavior. On this work, the focus is on the shear stress forces induced by fluid flow. The study of flow-induced effects on cells leads to important advances in cardiovascular, cancer, stem cell, and bone biology understanding. These studies are performed using cell culture flow (CCF) systems, mainly parallel plate flow chambers (PPFC), and microfluidic systems. Here, it is proposed an original CCF system based on the open fluidics concept...
October 16, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28987224/controversies-in-traditional-oral-and-maxillofacial-reconstruction
#12
REVIEW
John S Vorrasi, Antonia Kolokythas
Traditional reconstruction of the head and neck and significantly evolved over the last 20 to 30 years with advances in microvascular surgery, biologic materials such as bone morphogenic protein, and dental implant predictability. Earlier and more definitive reconstruction can now be achieved with combining therapies, allowing patients immediate restoration of function and improved cosmetics. Antiresorptive medications, such as Denosumab and bisphosphonates, have complicated bony reconstruction treatments with altered biology and less-predictable results...
November 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/28980322/fibroblast-growth-factor-21-attenuates-calcification-of-vascular-smooth-muscle-cells-in%C3%A2-vitro
#13
Fangying Cao, Shaoping Wang, Xiangrong Cao, Xiaoxiao Liu, Kun Fu, Peng Hao, Jinghua Liu
OBJECTIVES: Vascular calcification is a dysfunction of the vasculature. Recent findings indicate that fibroblast growth factor21 (FGF21), a protector of the cardiovascular system, is related to the mineral deposition of bone and enhances the osteogenic activity of bone morphogenic protein (BMP)-2. In this study, we explored whether FGF21 suppresses vascular calcification. METHODS: A calcifying model was established by culturing primary rat vascular aortic smooth muscle cells (VSMCs) in a beta-glycerophosphate (BGP)-containing calcifying medium for 14 days...
October 4, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28980278/do-we-need-retarded-delivery-of-bone-growth-factors-in-facial-bone-repair-an-experimental-study-in-rats
#14
N Moser, N Lohse, J Golstein, P Kauffmann, B Sven, M Epple, H Schliephake
The aim of the present study was to evaluate the effect of different dosages of retarded vs. rapid release of bone morphogenic protein 2 (BMP2) at different recipient sites. Porous composite poly(D,L-lactic acid) (PDLLA)/CaCO3 scaffolds were loaded with three different dosages of rhBMP2 (24 µg, 48 µg and 96 µg) and implanted, together with blank controls, both into non-healing defects of the mandibles and into the gluteal muscles of 24 adult male Wistar rats. After 26 weeks, bone formation and expression of bone specific markers [alkaline phosphatase (AP) and Runx2] were evaluated by histomorphometry and immunohistochemistry...
October 5, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28975650/a-genomic-characterization-of-the-influence-of-silver-nanoparticles-on-bone-differentiation-in-mc3t3-e1-cells
#15
Tao Qing, Meena Mahmood, Yuanting Zheng, Alexandru S Biris, Leming Shi, Daniel A Casciano
Silver nanoparticles (AgNPs) have been widely used in a variety of biomedical applications. Previous studies demonstrated that AgNPs significantly enhanced bone cell mineralization and differentiation in MC3T3-1 cells, a model in vitro system, when compared to several other NPs. This increased bone deposition was evaluated by phenotypic measurements and assessment of the expression of miRNAs associated with regulation of bone morphogenic proteins. In the present study, we used RNA-seq technology, a more direct measurement of gene expression, to investigate further the mechanisms of bone differentiation induced by AgNP treatment...
October 4, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28974260/in-vitro-characterization-of-canine-multipotent-stromal-cells-isolated-from-synovium-bone-marrow-and-adipose-tissue-a-donor-matched-comparative-study
#16
Robert N Bearden, Shannon S Huggins, Kevin J Cummings, Roger Smith, Carl A Gregory, William B Saunders
BACKGROUND: The dog represents an excellent large animal model for translational cell-based studies. Importantly, the properties of canine multipotent stromal cells (cMSCs) and the ideal tissue source for specific translational studies have yet to be established. The aim of this study was to characterize cMSCs derived from synovium, bone marrow, and adipose tissue using a donor-matched study design and a comprehensive series of in-vitro characterization, differentiation, and immunomodulation assays...
October 3, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28965980/remote-regulation-of-magnetic-particle-targeted-wnt-signaling-for-bone-tissue-engineering
#17
Michael Rotherham, James R Henstock, Omar Qutachi, Alicia J El Haj
Wnt signaling is critically involved in the differentiation of human Mesenchymal Stem Cells (hMSC). Wnt proteins therefore have considerable therapeutic value, but are expensive and difficult to produce. UM206 is a synthetic peptide and ligand for the Wnt receptor Frizzled. Attachment of UM206 to magnetic nanoparticles (MNP) enables the ligand-MNP complex to be manipulated using magnetic fields, allowing control of Frizzled stimulation. Using this approach, Wnt signaling was activated in hMSC which resulted in Frizzled clustering, β-catenin translocalization and activation of TCF/LEF responsive transcription...
September 29, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28949445/impact-of-selective-anti-bmp9-treatment-on-tumor-cells-and-tumor-angiogenesis
#18
(no author information available yet)
The role of bone morphogenic protein 9 (BMP9) signaling in angiogenesis has been controversial, with a number of studies showing that it acts either as a pro-angiogenic or, conversely, as an anti-angiogenic factor in a context-dependent manner. Notably, BMP9 was also reported to function in both pro- or anti-tumorigenic roles during tumor progression. It has therefore remained unclear, whether selective BMP9 inhibition is a useful target for antibody therapy of cancer. To shed light on these questions, we characterized BMP9 expression in plasma of patients with different cancer indications and found elevated levels of pro-domains and precursor BMP9 with a strong response in renal cell carcinoma (RCC)...
December 2016: Molecular Oncology
https://www.readbyqxmd.com/read/28925352/bmps-direct-sensory-interneuron-identity-in-the-developing-spinal-cord-using-signal-specific-not-morphogenic-activities
#19
Madeline G Andrews, Lorenzo M Del Castillo, Eliana Ochoa-Bolton, Ken Yamauchi, Jan Smogorzewski, Samantha J Butler
The Bone Morphogenetic Protein (BMP) family reiteratively signals to direct disparate cellular fates throughout embryogenesis. In the developing dorsal spinal cord, multiple BMPs are required to specify sensory interneurons (INs). Previous studies suggested that the BMPs act as concentration-dependent morphogens to direct IN identity, analogous to the manner in which sonic hedgehog patterns the ventral spinal cord. However, it remains unresolved how multiple BMPs would cooperate to establish a unified morphogen gradient...
September 19, 2017: ELife
https://www.readbyqxmd.com/read/28921810/bones-morphogenic-protein-4-and-retinoic-acid-combined-treatment-comparative-analysis-for-in-vitro-differentiation-potential-of-murine-mesenchymal-stem-cells-derived-from-bone-marrow-and-adipose-tissue-into-germ-cells
#20
Maryam H Shirzeily, Neda Khanlarkhani, Fardin Amidi, Farshad H Shirzeily, Fereydoon S Aval, Aligholi Sobhani
Nowadays, infertility is no longer considered as an unsolvable disorder due to progresses in germ cells derived from stem lineage with diverse origins. Technical and ethical challenges push researchers to investigate various tissue sources to approach more efficient gametes. The purpose of the current study is to investigate the efficacy of a combined medium, retinoic acid (RA) together with Bone Morphogenic Protein-4 (BMP4), on differentiation of Bone Marrow Mesenchymal Stem Cells (BMMSCs) and adipose-derived mesenchymal stem cells (ADMSCs) into germ cells...
September 18, 2017: Microscopy Research and Technique
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