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https://www.readbyqxmd.com/read/27910818/histomorphometric-and-transcriptome-evaluation-of-early-healing-bone-treated-with-a-novel-human-particulate-dentin-powder
#1
Yu-Chih Huang, Wei-Zhen Lew, Sheng-Wei Feng, Wei-Yi Lai, Yoshimitsu Abiko, Haw-Ming Huang
Human particulate dentin (HPD) shows potential as an alternative bone grafting material. However, the mechanism of bone healing at the molecular level after grafting with HPD is unclear. This study assessed the histological and global gene expression of bone tissues grafted with HPD. The HPD was prepared to 250-500 µm in size. X-ray diffraction (XRD) and energy dispersive x-ray spectroscopy (EDX) were performed to confirm the crystal structure, organic compound residues, and surface morphology, respectively...
December 2, 2016: Biomedical Materials
https://www.readbyqxmd.com/read/27903590/anterior-cruciate-ligament-derived-stem-cells-transduced-with-bmp2-accelerate-graft-bone-integration-after-acl-reconstruction
#2
Yohei Kawakami, Koji Takayama, Tomoyuki Matsumoto, Ying Tang, Bing Wang, Yutaka Mifune, James H Cummins, Ryan J Warth, Ryosuke Kuroda, Masahiro Kurosaka, Freddie H Fu, Johnny Huard
BACKGROUND: Strong graft-bone integration is a prerequisite for successful graft remodeling after reconstruction of the anterior cruciate ligament (ACL) using soft tissue grafts. Novel strategies to accelerate soft tissue graft-bone integration are needed to reduce the need for bone-tendon-bone graft harvest, reduce patient convalescence, facilitate rehabilitation, and reduce total recovery time after ACL reconstruction. HYPOTHESIS: The application of ACL-derived stem cells with enhanced expression of bone morphogenetic protein 2 (BMP2) onto soft tissue grafts in the form of cell sheets will both accelerate and improve the quality of graft-bone integration after ACL reconstruction in a rat model...
November 30, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27903529/angiocrine-bmp2-signaling-in-murine-liver-controls-normal-iron-homeostasis
#3
Philipp-Sebastian Koch, Victor Olsavszky, Friederike Ulbrich, Carsten Sticht, Alexandra Demory, Thomas Leibing, Thomas Henzler, Mathias Meyer, Johanna Zierow, Sven Schneider, Katja Breitkopf-Heinlein, Haristi Gaitantzi, Bradley Spencer-Dene, Bernd Arnold, Kay Klapproth, Kai Schledzewski, Sergij Goerdt, Cyrill Géraud
Microvascular endothelial cells (EC) display a high degree of phenotypic and functional heterogeneity among different organs. Organ-specific EC control their tissue microenvironment by angiocrine factors in health and disease. Liver sinusoidal EC (LSEC) are uniquely differentiated to fulfil important organ-specific functions in development, under homeostatic conditions, and in regeneration and liver pathology. Recently, Bmp2 has been identified by us as an organ-specific angiokine derived from LSEC. To study angiocrine Bmp2 signaling in the liver, we conditionally deleted Bmp2 in LSEC using EC subtype-specific Stab2-Cre mice...
November 30, 2016: Blood
https://www.readbyqxmd.com/read/27888521/cancer-associated-mesenchymal-stroma-fosters-the-stemness-of-osteosarcoma-cells-in-response-to-intratumoral-acidosis-via-nf-%C3%AE%C2%BAb-acivation
#4
Sofia Avnet, Gemma Di Pompo, Tokuhiro Chano, Costantino Errani, Arig Ibrahim-Hashim, Robert J Gillies, Davide Maria Donati, Nicola Baldini
The role of mesenchymal stem cells (MSC) in osteosarcoma (OS), the most common primary tumor of bone, has not been extensively elucidated. We have recently shown that OS is characterized by interstitial acidosis, a microenvironmental condition that is similar to a wound setting, in which mesenchymal reactive cells are activated to release mitogenic and chemotactic factors. We therefore intended to test the hypothesis that, in OS, acid-activated MSC influence tumor cell behavior. Conditioned media or co-culture with normal MSC previously incubated with short-term acidosis (pH 6...
November 26, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27886213/promotive-effects-of-bone-morphogenetic-protein-2-on-angiogenesis-in-hepatocarcinoma-via-multiple-signal-pathways
#5
Wei-Han Zuo, Peng Zeng, Xi Chen, Yan-Jun Lu, An Li, Jian-Bin Wu
The effects of Bone morphogenetic protein 2 (BMP-2) on the angiogenesis of hepatocellular carcinoma have not yet been observed and its molecular mechanisms is not clear. We first constructed the recombinant lentivirus vectors expressing small hairpin RNA against BMP-2 gene (LV-SH-BMP2) and the recombinant lentivirus vectors over-expressing BMP-2 (overexpression-LV-BMP2), and then the two recombinant lentivirus vectors were respectively transfected into Hep G2 cells. The Hep G2 cells transfected with LV-SH-BMP2 or overexpression-LV-BMP2 were respectively co-cultured with human umbilical vein endothelial cells (HUVECs) to observe the effects of BMP-2 on HUVECs...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27885807/loading-of-bmp2-related-peptide-onto-three-dimensional-nano-hydroxyapatite-scaffolds-accelerates-mineralization-in-critical-sized-cranial-bone-defects
#6
Tingfang Sun, Kui Zhou, Man Liu, Xiaodong Guo, Yanzhen Qu, Wei Cui, ZengWu Shao, Xianglin Zhang, Shuyun Xu
Extrusion free-forming, as a rapid prototyping technique, is extensively applied in fabricating ceramic material in bone tissue engineering. To improve the osteoinductivity of nano-hydroxyapatite (nHA) scaffold fabricated by extrusion free-forming, in this study, we incorporated a new peptide (P28) and optimized the superficial microstructure after shaping by controlling the sintering temperature. P28, a novel bone morphogenic protein 2 (BMP-2)-related peptide, was designed in this study. Analysis of the structure, physicochemical properties, and release kinetics of P28 from nHA sintered at temperatures ranging from 1000 °C to 1400 °C revealed that nHA sintered at 1000 °C had higher porosity, preferable pore size, and better capacity to control P28 release than that sintered at other temperatures...
November 25, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27881195/the-involvement-of-runx2-and-sparc-genes-in-the-bacterial-chondronecrosis-with-osteomyelitis-in-broilers
#7
E Paludo, A M G Ibelli, J O Peixoto, F C Tavernari, C A V Lima-Rosa, J R C Pandolfi, M C Ledur
Economic losses due to an increase of leg disorders in broilers have become a major concern of the poultry industry. Despite the efforts to reduce skeletal abnormalities in chickens, insufficient progress has been made. Bacterial chondronecrosis with osteomyelitis (BCO) is one of the main disorders that affect bone integrity in broilers. However, the genetic pathways and genes involved in most bone problems, including BCO, remains unclear. In this study, femoral samples from male broilers with 45 days of age affected or not with BCO were used to compare the relative expression with a reverse transcription real time PCR approach of 13 candidate genes: SPP1 (osteopontin), TNFRSF11B (osteoprotegerin), SPARC (osteonectin), CALB1 (calbidin 1), CALM (Calmodulin 2), IBSP (sialoprotein), COL1A2 (collagen, type I, α 2), BMP2 (bone morphogenetic protein 2), BMP3 (bone morphogenetic protein 3), RANKL (κ-B nuclear factor ligand), SMAD1 (SMAD family member 1), LEPR (leptin receptor) and RUNX2 (related transcription factor Runt 2)...
November 24, 2016: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/27876618/tlr4-nf-%C3%AE%C2%BAb-ceramide-signaling-contributes-to-ox-ldl-induced-calcification-of-human-vascular-smooth-muscle-cells
#8
Yan Song, Menglin Hou, Zhenlin Li, Chufan Luo, Jing-Song Ou, Huimin Yu, Jianyun Yan, Lihe Lu
Vascular calcification is a major feature of advanced atherosclerosis and highly associated with cardiovascular diseases. Oxidized low density lipoprotein (Ox-LDL) has been recognized as a critical risk factor for atherosclerosis and osteogenic differentiation of vascular smooth muscle cells (VSMCs). Previous studies have demonstrated that toll like receptor 4 (TLR4) is highly expressed in atherosclerotic lesions and participates in the progression of atherosclerosis. However, the role of TLR4 in vascular calcification remains unknown...
November 19, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27862254/hk2-proximal-tubule-epithelial-cells-synthesize-and-secrete-plasma-proteins-predominantly-through-the-apical-surface
#9
Ke-Wei Zhao, Elsa J Brochmann Murray, Samuel S Murray
Renal proximal tubule epithelial cells (PTECs) are known to reabsorb salts and small plasma proteins filtered through Bowman's capsule. Following acute kidney injury, PTECs assume some characteristics of hepatocytes in producing various plasma proteins. We now demonstrate that even at a resting state, a PTEC cell line, HK2 expresses mRNAs for and synthesizes and secretes plasma proteins in a complex with complement C3, an α2 -macroglobulin family chaperone, including albumin, transferrin, α1 -antitrypsin, α1 -antichymotrypsin, α2 -HS-glycoprotein, ceruloplasmin, haptoglobin, C1-inhibitor, secreted phosphoprotein-24, and insulin-like growth factor-1...
November 9, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27861872/lgr4-expression-in-osteoblastic-cells-is-suppressed-by-hydrogen-peroxide-treatment
#10
Chantida Pawaputanon Na Mahasarakham, Yayoi Izu, Katsuhiko Nishimori, Yuichi Izumi, Masaki Noda, Yoichi Ezura
LGR4 is expressed in bone and has been shown to be involved in bone metabolism. Oxidative stress is one of the key issues in pathophysiology of osteoporosis. However, the link between Lgr4 and oxidative stress has not been known. Therefore, effects of hydrogen peroxide on Lgr4 expression in osteoblasts were examined. Hydrogen peroxide treatment suppressed the levels of Lgr4 mRNA expression in an osteoblastic cell line, MC3T3E1. The suppressive effects were not obvious at 0.1mM while 1mM hydrogen peroxide suppressed Lgr4 expression by more than 50%...
November 11, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27860183/microrna-98-regulates-osteogenic-differentiation-of-human-bone-mesenchymal-stromal-cells-by-targeting-bmp2
#11
Guo-Ping Zhang, Jing Zhang, Chao-Hua Zhu, Lei Lin, Jian Wang, Hai-Jing Zhang, Jun Li, Xiao-Guang Yu, Zhen-Shuan Zhao, Wei Dong, Guo-Bin Liu
To study the effects of microRNA-98 (miR-98) on human bone mesenchymal stromal cells (hBMSCs). The patients undergoing hip arthroplasty were selected by inclusion/exclusion criteria for this study. The extracted hBMSCs were detected of osteogenic differentiation by alizarin red S staining, and of cell phenotype by flow cytometry. Bioinformatics, dual luciferase report, western blotting, RT-PCR and immunoblotting were used in our study. The hBMSCs were divided into miR-98 mimics, miR-98 negative control (NC), miR-98 inhibitors, Mock and miR-98 inhibitors + siBMP2 groups...
November 18, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27835878/apocynin-attenuates-angiotensin-ii-induced-vascular-smooth-muscle-cells-osteogenic-switching-via-suppressing-extracellular-signal-regulated-kinase-1-2
#12
Weijing Feng, Kun Zhang, Yu Liu, Jie Chen, Qingqing Cai, Yinyin Zhang, Mongheng Wang, Jingfeng Wang, Hui Huang
Vascular calcification (VC) is a significant risk factor for cardiovascular morbidity and mortality. We recently reported that apocynin had benefits for preventing cardiovascular diseases. However, whether apocynin could attenuate VC is unknown. Here, we investigated the role of apocynin in VC and its underlying mechanisms. 163 participants with high or normal ankle-brachial index (ABI) were enrolled in this study for analyzing the demographic and biochemical data. In vitro, vascular smooth muscle cells (VSMCs) were exposed to calcification medium containing b-glycerophosphate and angiotensin II (Ang II) for 24 hours...
November 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27834400/notch-regulates-bmp-responsiveness-and-lateral-branching-in-vessel-networks-via-smad6
#13
Kevin P Mouillesseaux, David S Wiley, Lauren M Saunders, Lyndsay A Wylie, Erich J Kushner, Diana C Chong, Kathryn M Citrin, Andrew T Barber, Youngsook Park, Jun-Dae Kim, Leigh Ann Samsa, Jongmin Kim, Jiandong Liu, Suk-Won Jin, Victoria L Bautch
Functional blood vessel growth depends on generation of distinct but coordinated responses from endothelial cells. Bone morphogenetic proteins (BMP), part of the TGFβ superfamily, bind receptors to induce phosphorylation and nuclear translocation of SMAD transcription factors (R-SMAD1/5/8) and regulate vessel growth. However, SMAD1/5/8 signalling results in both pro- and anti-angiogenic outputs, highlighting a poor understanding of the complexities of BMP signalling in the vasculature. Here we show that BMP6 and BMP2 ligands are pro-angiogenic in vitro and in vivo, and that lateral vessel branching requires threshold levels of R-SMAD phosphorylation...
November 11, 2016: Nature Communications
https://www.readbyqxmd.com/read/27829314/bone-morphogenetic-protein-2-but-not-mesenchymal-stromal-cells-exert-regenerative-effects-on-canine-and-human-nucleus-pulposus-cells
#14
Frances Bach, Alberto Miranda-Bedate, Ferdi van Heel, Frank Riemers, Margot Muller, Laura Creemers, Keita Ito, Karin Benz, Björn Meij, M Tryfonidou
Chronic back pain is related to intervertebral disc (IVD) degeneration and dogs are employed as animal models to develop growth factor- and cell-based regenerative treatments. In this respect, the differential effects of transforming growth factor beta-1 (TGF-β1) and bone morphogenetic protein-2 (BMP2) on canine and human chondrocyte-like cells (CLCs) derived from the nucleus pulposus of degenerated IVDs were studied. Human and canine CLCs were cultured in 3D micro-aggregates in basal culture medium supplemented with/without TGF-β1 (10 ng/mL) or BMP2 (100 or 250 ng/mL)...
November 9, 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27818692/implant-composed-of-demineralized-bone-and-mesenchymal-stem-cells-genetically-modified-with-adbmp2-adbmp7-for-the-regeneration-of-bone-fractures-in-ovis-aries
#15
Adelina A Hernandez-Hurtado, Gissela Borrego-Soto, Ivan A Marino-Martinez, Jorge Lara-Arias, Viktor J Romero-Diaz, Adalberto Abrego-Guerra, Jose F Vilchez-Cavazos, Guillermo Elizondo-Riojas, Herminia G Martinez-Rodriguez, Marcela A Espinoza-Juarez, Gloria C Lopez-Romero, Alejandro Robles-Zamora, Oscar F Mendoza Lemus, Rocio Ortiz-Lopez, Augusto Rojas-Martinez
Adipose-derived mesenchymal stem cells (ADMSCs) are inducible to an osteogenic phenotype by the bone morphogenetic proteins (BMPs). This facilitates the generation of implants for bone tissue regeneration. This study evaluated the in vitro osteogenic differentiation of ADMSCs transduced individually and in combination with adenoviral vectors expressing BMP2 and BMP7. Moreover, the effectiveness of the implant containing ADMSCs transduced with the adenoviral vectors AdBMP2/AdBMP7 and embedded in demineralized bone matrix (DBM) was tested in a model of tibial fracture in sheep...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27815469/effect-of-bmp2-platelet-rich-plasma-biphasic-calcium-phosphate-scaffold-on-accelerated-osteogenesis-in-mastoid-obliteration
#16
Chul Ho Jang, Cheol Hee Choi, Yong Beom Cho
The aim of this study was to evaluate the synergistic effect of platelet-rich plasma (PRP) and recombinant human bone morphogenic protein (BMP)-2 on accelerated osteogenesis of hydroxyapatite/β-tricalcium phosphate mixture and biphasic calcium phosphate (BCP) in mastoid obliteration. To the best of our knowledge, there have been no studies reporting the enhancing effects of BCP, combined with BMP2 and PRP, on osteogenesis in mastoid obliteration. Mastoid obliteration was performed in a control group (BCP only, n=7), a group treated with BMP2 and BCP (experimental group I, n=7), and a group treated with BMP2, PRP and BCP (experimental group II, n=7)...
November 2016: In Vivo
https://www.readbyqxmd.com/read/27815159/expression-and-functional-role-of-bone-morphogenetic-proteins-bmps-in-cyclical-corpus-luteum-in-buffalo-bubalus-bubalis
#17
G Rajesh, Avishek Paul, S R Mishra, Jaya Bharati, Nipuna Thakur, Tanmay Mondal, Sanjhali Soren, S Harikumar, K Narayanan, V S Chouhan, Sadhan Bag, B C Das, G Singh, V P Maurya, G Taru Sharma, Mihir Sarkar
The role of growth factors in the modulation of ovarian function is an interesting area of research in reproductive biology. Recently, we have shown the expression and role of IGF, EGF, VEGF and FGF in the follicle and CL. Here, we report the presence of Bone Morphogenetic Proteins (BMPs) and their functional receptors in the corpus luteum (CL) of buffalo. The bubaline CL was classified into four stages according to the morphology and progesterone (P4) concentration. The qPCR, immunoblot and immunohistochemistry studies revealed that BMP2 and BMP Receptors (BMPR1A, BMPR1B and BMPR2) were significantly upregulated during the mid stage whereas BMP4 and BMP7 were upregulated during the early stage of CL (P<0...
November 1, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27808010/role-of-neuroinflammation-and-latent-transcription-factors-in-pathogenesis-of-parkinson-s-disease
#18
Rishi Pal, Prafulla Chandra Tiwari, Rajendra Nath, Kamlesh Kumar Pant
Parkinson's disease (PD) the second most common age-associated progressive neurodegenerative disorder is characterized by loss of dopaminergic neurons, cytoplasmic inclusions of aggregated proteins (Lewy bodies), and neuroinflammation. The inflammation of neurons causes release of various inflammatory mediators (IFNs, EGF, IL5, IL6, HGF, LIF and BMP2). The hallmarks of neuroinflammation are the presence of activated microglia and reactive astrocytes in the parenchyma of the CNS and increased production of cytokines, chemokines, prostaglandins, complement cascade proteins, and reactive oxygen and nitrogen species (ROS/RNS) which in some cases can result in disruption of the blood brain barrier and direct participation of the adaptive immune system...
November 3, 2016: Neurological Research
https://www.readbyqxmd.com/read/27807880/selection-signature-analysis-reveals-genes-associated-with-tail-type-in-chinese-indigenous-sheep
#19
Z Yuan, E Liu, Z Liu, J W Kijas, C Zhu, S Hu, X Ma, L Zhang, L Du, H Wang, C Wei
Fat-tailed sheep have commercial value because consumers prefer high-protein and low-fat food and producers care about feed conversion rate. However, fat-tailed sheep still have some scientific significance, as the fat tail is commonly regarded as a characteristic of environmental adaptability. Finding the candidate genes associated with fat tail formation is essential for breeding and conservation. To identify these candidate genes, we applied FST and hapFLK approaches in fat- and thin-tailed sheep with available 50K SNP genotype data...
November 3, 2016: Animal Genetics
https://www.readbyqxmd.com/read/27806311/breast-cancer-cells-obtain-an-osteomimetic-feature-via-epithelial-mesenchymal-transition-that-have-undergone-bmp2-runx2-signaling-pathway-induction
#20
Cong-Cong Tan, Gui-Xi Li, Li-Duan Tan, Xin Du, Xiao-Qing Li, Rui He, Qing-Shan Wang, Yu-Mei Feng
Bone is one of the most common organs of breast cancer metastasis. Cancer cells that mimic osteoblasts by expressing bone matrix proteins and factors have a higher likelihood of metastasizing to bone. However, the molecular mechanisms of osteomimicry formation of cancer cells remain undefined. Herein, we identified a set of bone-related genes (BRGs) that are ectopically co-expressed in primary breast cancer tissues and determined that osteomimetic feature is obtained due to the osteoblast-like transformation of epithelial breast cancer cells that have undergone epithelial-mesenchymal transition (EMT) followed by bone morphogenetic protein-2 (BMP2) stimulation...
October 27, 2016: Oncotarget
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