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bone morphogenetic protein 6

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https://www.readbyqxmd.com/read/28218774/osteoblast-differentiation-of-rabbit-adipose-derived-stem-cells-by-polyethylenimine-mediated-bmp-2-gene-transfection-in-vitro
#1
Q F Wang, Y Huang, G C He, H S Wang, Z H Chen, X H Cai, Y H Xie, Q Liu
The aim of this study was to examine the efficiency of polyethylenimine-mediated transfection of the human bone morphogenetic protein-2 (BMP-2) gene into rabbit adipose-derived stem cells (ADSCs), and its effect on osteoblast differentiation. Adipose tissue was isolated from the necks of adult Japanese white rabbits and cultured in vitro to obtain ADSCs. Gene delivery of BMP-2 was mediated by polyethylenimine and stable transformants were selected by G-418. The expression of BMP-2 mRNA was confirmed by reverse transcription-polymerase chain reaction, and of the BMP-2 protein by ELISA...
February 16, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28216608/expression-of-iron-related-proteins-differentiate-non-cancerous-and-cancerous-breast-tumors
#2
Sara Pizzamiglio, Maida De Bortoli, Elena Taverna, Michele Signore, Silvia Veneroni, William Chi-Shing Cho, Rosaria Orlandi, Paolo Verderio, Italia Bongarzone
We have previously reported hepcidin and ferritin increases in the plasma of breast cancer patients, but not in patients with benign breast disease. We hypothesized that these differences in systemic iron homeostasis may reflect alterations in different iron-related proteins also play a key biochemical and regulatory role in breast cancer. Thus, here we explored the expression of a bundle of molecules involved in both iron homeostasis and tumorigenesis in tissue samples. Enzyme-linked immunosorbent assay (ELISA) or reverse-phase protein array (RPPA), were used to measure the expression of 20 proteins linked to iron processes in 24 non-cancerous, and 56 cancerous, breast tumors...
February 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28213747/bone-morphogenetic-protein-2-for-the-treatment-of-congenital-pseudarthrosis-of-the-tibia-or-persistent-tibial-nonunion-in-children-and-adolescents-a-retrospective-study-with-a-minimum-2-year-follow-up
#3
Tim N Hissnauer, Norbert Stiel, Kornelia Babin, Martin Rupprecht, Michael Hoffmann, Johannes M Rueger, Ralf Stuecker, Alexander S Spiro
There is a lack of studies reporting on rhBMP-2 application in pediatric orthopaedics, although few reports demonstrated promising results of the use of rhBMP-2 in children, especially for spine fusion and for the treatment of congenital pseudarthrosis of the tibia. The objectives of this study were (1) to examine clinical and radiographic healing after rhBMP-2 application for the treatment of congenital pseudarthrosis of the tibia (CPT) or persistent tibial nonunion in children and adolescents, and (2) to investigate the safety of rhBMP-2 use in these cases...
April 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28207623/feasibility-of-percutaneous-posterolateral-spinal-fusion-with-recombinant-bone-morphogenetic-protein-2-rhbmp-2-a-comparison-with-standard-methods-using-an-animal-model-study
#4
Chris Yin Wei Chan, Mun Keong Kwan, Lim Beng Saw, Hussin Paisal
BACKGROUND CONTEXT: The clinical application of recombinant bone morphogenetic protein in spinal surgery has been shown to be safe and effective. However, its use in minimally invasive spine surgery has been limited to anterior interbody fusion procedures. To date, no study has evaluated the feasibility of percutaneous posterolateral fusion in the spine utilizing recombinant bone morphogenetic protein-2 (rhBMP-2). PURPOSE: To evaluate the feasibility of percutaneous posterolateral fusion in the spine utilizing rhBMP-2...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28202997/-a-novel-tissue-engineered-bone-constructed-by-using-human-adipose-derived-stem-cells-and-biomimetic-calcium-phosphate-scaffold-coprecipitated-with-bone-morphogenetic-protein-2
#5
W R Jiang, X Zhang, Y S Liu, G Wu, Y J Ge, Y S Zhou
OBJECTIVE: To construct a novel biomimetic calcium phosphate (BioCaP) scaffold loaded with bone morphogenetic protein-2 (BMP-2), and to investigate its role in the osteogenesis of human adipose-derived stem cells (hASCs) in vitro and in vivo. METHODS: The BioCaP scaffold coprecipitated with BMP-2 (BMP-2-BioCaP) was constructed in this study. Field emission scanning electron microscopy (SEM) was used to analyze the morphology of the surfaces. The release kinetics was measured to evaluate the slow-release characteristics in vitro...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28198775/combining-smoothened-agonist-sag-and-nel-like-protein-1-nell-1-enhances-bone-healing
#6
Soonchul Lee, Chenchao Wang, Hsin Chuan Pan, Swati Shrestha, Carolyn Meyers, Catherine Ding, Jia Shen, Eric Chen, Min Lee, Chia Soo, Kang Ting, Aaron W James
BACKGROUND: Non-healing bone defects represent an immense biomedical burden. Despite recent advances in protein based bone regeneration, safety concerns over bone morphogenetic protein-2 have prompted the search for alternative factors. Previously, we examined the additive / synergistic effects of Hedgehog (Hh) and Nel-like protein-1 (NELL-1) on the osteogenic differentiation of mesenchymal stem cells in vitro. Here, we sought to leverage our previous findings by applying the combination of Smoothened agonist (SAG), Hh signal activator, and NELL-1 to an in vivo critical size bone defect model...
February 13, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28197731/comparison-of-the-effects-of-recombinant-human-bone-morphogenetic-protein-2-and-9-on-bone-formation-in-rat-calvarial-critical-size-defects
#7
Toshiaki Nakamura, Yoshinori Shirakata, Yukiya Shinohara, Richard J Miron, Kozue Hasegawa-Nakamura, Masako Fujioka-Kobayashi, Kazuyuki Noguchi
OBJECTIVES: Among bone morphogenetic protein (BMP) family members, BMP-2 and BMP-9 have demonstrated potent osteoinductive potential. However, in vivo differences in their potential for bone regeneration remain unclear. The present study aimed to compare the effects of recombinant human (rh) BMP-2 and rhBMP-9 on bone formation in rat calvarial critical-size defects (CSD). MATERIALS AND METHODS: Twenty-eight Wistar rats surgically received two calvarial defects bilaterally in each parietal bone...
February 14, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28191762/periodontal-tissue-regeneration-using-syngeneic-adipose-derived-stromal-cells-in-a-mouse-model
#8
Mathieu Lemaitre, Paul Monsarrat, Vincent Blasco-Baque, Pascale Loubières, Rémy Burcelin, Louis Casteilla, Valérie Planat-Bénard, Philippe Kémoun
Current treatment of periodontitis is still associated with a high degree of variability in clinical outcomes. Recent advances in regenerative medicine by mesenchymal cells, including adipose stromal cells (ASC) have paved the way to improved periodontal regeneration (PD) but little is known about the biological processes involved. Here, we aimed to use syngeneic ASCs for periodontal regeneration in a new, relevant, bacteria-induced periodontitis model in mice. Periodontal defects were induced in female C57BL6/J mice by oral gavage with periodontal pathogens...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28191760/directing-differentiation-of-pluripotent-stem-cells-toward-retinal-pigment-epithelium-lineage
#9
Parul Choudhary, Heather Booth, Alex Gutteridge, Beata Surmacz, Irene Louca, Juliette Steer, Julie Kerby, Paul John Whiting
Development of efficient and reproducible conditions for directed differentiation of pluripotent stem cells into specific cell types is important not only to understand early human development but also to enable more practical applications, such as in vitro disease modeling, drug discovery, and cell therapies. The differentiation of stem cells to retinal pigment epithelium (RPE) in particular holds promise as a source of cells for therapeutic replacement in age-related macular degeneration. Here we show development of an efficient method for deriving homogeneous RPE populations in a period of 45 days using an adherent, monolayer system and defined xeno-free media and matrices...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28171719/nano-hydroxyapatite-bone-substitute-functionalized-with-bone-active-molecules-for-enhanced-cranial-bone-regeneration
#10
Arun Kumar Teotia, Deepak Bushan Raina, Chandan Singh, Neeraj Sinha, Hanna Isaksson, Magnus Tägil, Lars Lidgren, Ashok Kumar
The aim of this study was to synthesize and characterize a nano-hydroxyapatite (nHAP) and calcium sulfate bone substitute (NC) for cranioplasty. The NC was functionalized with low concentrations of bone morphogenetic protein-2 (BMP-2) and zoledronic acid (ZA) and characterized both in vitro and in vivo. In vitro studies included MTT, ALP assays, and fluorescent staining of Saos-2 (human osteoblasts) and MC3T3-E1 (murine preosteoblasts) cells cultured on NC. An in vivo study divided 20 male Wistar rats into four groups: control (defect only), NC, NC + ZA, and NC + ZA + rhBMP-2...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28170187/a-selective-cell-population-from-dermis-strengthens-bone-regeneration
#11
Tingliang Wang, Jinguang He, Yang Zhang, Wenjun Shi, Jiasheng Dong, Ming Pei, Lian Zhu
Finding appropriate seed cells for bone tissue engineering remains a significant challenge. Considering that skin is the largest organ, we hypothesized that human bone morphogenetic protein receptor type IB (BmprIB)+ dermal cells could have enhanced osteogenic capacity in the healing of critical-sized calvarial defects in an immunodeficient mouse model. In this study, immunohistochemical staining revealed that BmprIB was expressed throughout reticular dermal cells; the positive expression rate of BmprIB was 3...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28170184/regeneration-of-articular-cartilage-by-human-esc-derived-mesenchymal-progenitors-treated-sequentially-with-bmp-2-and-wnt5a
#12
Jason D Gibson, Michael B O'Sullivan, Farhang Alaee, David N Paglia, Ryu Yoshida, Rosa M Guzzo, Hicham Drissi
The success of cell-based therapies to restore joint cartilage requires an optimal source of reparative progenitor cells and tight control of their differentiation into a permanent cartilage phenotype. Bone morphogenetic protein 2 (BMP-2) has been extensively shown to promote mesenchymal cell differentiation into chondrocytes in vitro and in vivo. Conversely, developmental studies have demonstrated decreased chondrocyte maturation by Wingless-Type MMTV Integration Site Family, Member 5A (Wnt5a). Thus, we hypothesized that treatment of human embryonic stem cell (hESC)-derived chondroprogenitors with BMP-2 followed by Wnt5a may control the maturational progression of these cells into a hyaline-like chondrocyte phenotype...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28165165/recombinant-bone-morphogenetic-protein-2-and-platelet-derived-growth-factor-bb-for-localized-bone-regeneration-histologic-and-radiographic-outcomes-of-a-rabbit-study
#13
Daniel S Thoma, Hyun-Chang Lim, Vitor M Sapata, Sora R Yoon, Ronald E Jung, Ui-Won Jung
OBJECTIVES: Improvement in localized bone regeneration is needed to avoid the use of autogenous tissue. For that purpose, the use biologic mediators was proposed. The aim was to test whether or not one of two biologic mediators, recombinant human bone morphogenetic protein-2 (rhBMP-2) or recombinant platelet-derived growth factor (rhPDGF-BB), is superior to the other and to control groups for localized bone regeneration. MATERIALS AND METHODS: Four cylinders (height: 5 mm; diameter: 7 mm) were screwed on the parietal and frontal bones at the cranium in 12 rabbits...
February 6, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28162174/-viability-of-osteoblasts-under-cell-hypoxia-condition
#14
C Wu, W W Zheng, M Yang
Objective: To investigate the effects of hypoxia condition and hypoxia-reoxygenation condition on the cell viability, apoptosis rate and gene expression of osteoblasts cultured in vitro. Methods: The cranium osteoblasts from newborn Sprague Dawley rats within 48 hours were cultured and purified through tissue block method.The morphological changes of cells were evaluated by the Alizarin Red S staining and Alkaline phosphatase staining.The third-generation osteoblasts were cultured in normal condition for 36 hours (group A), in hypoxic condition for 24hours (group B), in hypoxic condition for 24hours thereafter reoxygenated for 12 hours (group D), in hypoxic condition for 36 hours (group C)...
January 17, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28156207/is-lumbar-facet-fusion-biomechanically-equivalent-to-lumbar-posterolateral-onlay-fusion
#15
Jeffrey M Toth, Kevin T Foley, Mei Wang, Howard B Seim, A Simon Turner
OBJECTIVE This study was designed with the following research objectives: 1) to determine the efficacy of facet fusion with recombinant human bone morphogenetic protein-2 (rhBMP-2) on an absorbable collagen sponge (ACS) in an ovine lumbar facet fusion model; 2) to radiographically and histologically compare the efficacy of lumbar facet fusion with rhBMP-2/ACS to facet fusion with an iliac crest bone graft (ICBG); and 3) to biomechanically compare lumbar facet fusion with rhBMP-2/ACS to lumbar posterolateral fusion (PLF) with ICBG...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28148490/characterisation-of-osteophytes-as-an-autologous-bone-graft-source-an-experimental-study-in-vivo-and-in-vitro
#16
K Ishihara, K Okazaki, T Akiyama, Y Akasaki, Y Nakashima
OBJECTIVES: Osteophytes are products of active endochondral and intramembranous ossification, and therefore could theoretically provide significant efficacy as bone grafts. In this study, we compared the bone mineralisation effectiveness of osteophytes and cancellous bone, including their effects on secretion of growth factors and anabolic effects on osteoblasts. METHODS: Osteophytes and cancellous bone obtained from human patients were transplanted onto the calvaria of severe combined immunodeficient mice, with Calcein administered intra-peritoneally for fluorescent labelling of bone mineralisation...
February 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28144577/heterotopic-ossification-after-the-use-of-recombinant-human-bone-morphogenetic-protein-7
#17
Marianthi Papanagiotou, Zoe H Dailiana, Theophilos Karachalios, Sokratis Varitimidis, Michael Hantes, Georgios Dimakopoulos, Marianna Vlychou, Konstantinos N Malizos
AIM: To present the incidence of heterotopic ossification after the use of recombinant human bone morphogenetic protein-7 (rhBMP-7) for the treatment of nonunions. METHODS: Bone morphogenetic proteins (BMPs) promote bone formation by auto-induction. Recombinant human BMP-7 in combination with bone grafts was used in 84 patients for the treatment of long bone nonunions. All patients were evaluated radiographicaly for the development of heterotopic ossification during the standard assessment for the nonunion healing...
January 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28139520/effect-of-15-deoxy-%C3%AE-12-14-prostaglandin-j2nanocapsules-on-inflammation-and-bone-regeneration-in-a-rat-bone-defect-model
#18
Qi Tang, Li-Li Chen, Fen Wei, Wei-Lian Sun, Li-Hong Lei, Pei-Hui Ding, Jing-Yi Tan, Xiao-Tao Chen, Yan-Min Wu
BACKGROUND: 15-Deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2), one of the major metabolites from prostaglandin D2 in arachidonic acid metabolic pathway, has potential anti-inflammatory properties. The objective of this study was to explore the effects of 15d-PGJ2-loaded poly(D,L-lactide-co-glycolide) nanocapsules (15d-PGJ2-NC) on inflammatory responses and bone regeneration in local bone defect. METHODS: The study was conducted on 96 Wistar rats from June 2014 to March 2016...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28134597/endogenous-bone-morphogenetic-protein-2-plays-a-role-in-vascular-smooth-muscle-cell-calcification-induced-by-interleukin-6-in-vitro
#19
Mingshu Sun, Qing Chang, Miaomiao Xin, Qian Wang, Hua Li, Jiaqi Qian
Systemic inflammation is involved in vascular calcification and cardiovascular disease which is the leading cause of mortality in rheumatoid arthritis (RA). A high level of serum interleukin (IL)-6 plays a key role in local and systemic inflammation in RA. However, the underlying mechanisms remain unclear. We established a human umbilical artery smooth muscle cell (HUASMC) culturing method to investigate the possible role of IL-6 on vascular calcification. HUASMCs were obtained from umbilical arteries of healthy neonates...
January 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28133786/haplotype-based-gene-gene-interaction-of-bone-morphogenetic-protein-4-and-interferon-regulatory-factor-6-in-the-etiology-of-non-syndromic-cleft-lip-with-or-without-cleft-palate-in-a-chilean-population
#20
Rafael Blanco, Alicia Colombo, Rosa Pardo, José Suazo
Non-syndromic cleft lip with or without cleft palate (NSCL/P) is the most common craniofacial birth defect in humans, the etiology of which can be dependent on the interactions of multiple genes. We previously reported haplotype associations for polymorphic variants of interferon regulatory factor 6 (IRF6), msh homeobox 1 (MSX1), bone morphogenetic protein 4 (BMP4), and transforming growth factor beta 3 (TGFB3) in Chile. Here, we analyzed the haplotype-based gene-gene interaction for markers of these genes and NSCL/P risk in the Chilean population...
January 30, 2017: European Journal of Oral Sciences
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