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https://www.readbyqxmd.com/read/28438835/il-1%C3%AE-transcriptionally-activates-hepcidin-by-inducing-c-ebp%C3%AE-expression-in-hepatocytes
#1
Yohei Kanamori, Masaru Murakami, Makoto Sugiyama, Osamu Hashimoto, Tohru Matsui, Masayuki Funaba
Hepcidin is a liver-derived hormone that negatively regulates serum iron levels and is mainly regulated at the transcriptional level. Previous studies have clarified that in addition to hepatic iron levels, inflammation also efficiently increases hepatic hepcidin expression. The principle regions responsible for efficient hepcidin transcription are bone morphogenetic protein-responsive elements (BMP-REs) 1 and 2 as well as the signal transducer and activator of transcription 3-binding site (STAT-BS). Here, we show that the proinflammatory cytokine interleukin-1β (IL-1β) efficiently increases hepcidin expression in human HepG2 liver-derived cells and primary mouse hepatocytes...
April 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28437133/the-impact-of-the-centrifuge-characteristics-and-centrifugation-protocols-on-the-cells-growth-factors-and-fibrin-architecture-of-a-leukocyte-and-platelet-rich-fibrin-l-prf-clot-and-membrane
#2
David M Dohan Ehrenfest, Nelson R Pinto, Andrea Pereda, Paula Jiménez, Marco Del Corso, Byung-Soo Kang, Mauricio Nally, Nicole Lanata, Hom-Lay Wang, Marc Quirynen
L-PRF (leukocyte- and platelet-rich fibrin) is one of the four families of platelet concentrates for surgical use and is widely used in oral and maxillofacial regenerative therapies. The first objective of this article was to evaluate the mechanical vibrations appearing during centrifugation in four models of commercially available table-top centrifuges used to produce L-PRF and the impact of the centrifuge characteristics on the cell and fibrin architecture of a L-PRF clot and membrane. The second objective of this article was to evaluate how changing some parameters of the L-PRF protocol may influence its biological signature, independently from the characteristics of the centrifuge...
April 24, 2017: Platelets
https://www.readbyqxmd.com/read/28436605/digeorge-like-syndrome-in-a-child-with-a-3p12-3-deletion-involving-mir4273-gene-born-to-a-mother-with-gestational-diabetes-mellitus
#3
Emilia Cirillo, Giuliana Giardino, Vera Gallo, Giovanni Galasso, Roberta Romano, Roberta D'Assante, Giulia Scalia, Luigi Del Vecchio, Lucio Nitsch, Rita Genesio, Claudio Pignata
Chromosome 22q11.2 deletion is the most common chromosomal alteration associated with DiGeorge syndrome (DGS), even though this is not the only underlying cause of DGS. In rare patients, mutations in a single gene, TBX1, have been described resulting in a DGS phenotype. Recently, it has been reported that at least part of the TBX1 mutant phenotype is due to excessive bone morphogenetic proteins (BMP) signaling. Evidence suggests that miRNA may modulate the expression of critical T-box transcriptional regulators during midface development and Bmp-signaling...
April 24, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28434979/synergistic-effects-of-bmp-2-bmp-6-or-bmp-7-with-human-plasma-fibronectin-onto-hydroxyapatite-coatings-a-comparative-study
#4
Isabelle Brigaud, Rémy Agniel, Johanne Leroy Dudal, Sabrina Kellouche, Arnaud Ponche, Tahar Bouceba, Natalia Mihailescu, Mihai Sopronyi, Eric Viguier, Carmen Ristoscu, Felix Sima, Ion N Mihailescu, Ana Claudia O Carreira, Mari Cleide Sogayar, Olivier Gallet, Karine Anselme
Design of new osteoinductive biomaterials to reproduce an optimized physiological environment capable of recruiting stem cells and instructing their fate towards the osteoblastic lineage has become a priority in orthopedic surgery. This work aims at evaluating the bioactivity of BMP combined with human plasma fibronectin (FN/BMP) delivered in solution or coated onto titanium-hydroxyapatite (TiHA) surfaces. Herein, we focus on the comparison of in vitro osteogenic efficacy in mouse C2C12 pre-osteoblasts of three BMP members, namely: BMP-2, BMP-6 and BMP-7...
April 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28418785/metabolomics-analysis-of-the-osteogenic-differentiation-of-umbilical-cord-blood-mesenchymal-stem-cells-reveals-differential-sensitivity-to-osteogenic-agents
#5
Michail E Klontzas, Spyros I Vernardis, Manolis Heliotis, Eleftherios Tsiridis, Athanasios Mantalaris
Mesenchymal stem cells (MSCs) of fetal origin, such as umbilical cord blood MSCs (UCB MSCs), have emerged as a promising cell source for musculoskeletal tissue regeneration because of their higher proliferation potential, lack of donor site morbidity, and their off-the-shelf potential. MSCs differentiated toward the osteogenic lineage exhibit a specific metabolic phenotype characterized by reliance to oxidative phosphorylation for energy production and reduced glycolytic rates. Currently, limited information exists on the metabolic transitions at different stages of the osteogenic process after osteoinduction with different agents...
April 18, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28415516/acceleration-of-bone-regeneration-in-bioactive-glass-gelatin-composite-scaffolds-seeded-with-bone-marrow-derived-mesenchymal-stem-cells-over-expressing-bone-morphogenetic-protein-7
#6
Saeid Kargozar, Seyed Jafar Hashemian, Mansooreh Soleimani, Peiman Brouki Milan, Mohammad Askari, Vahid Khalaj, Ali Samadikuchaksaraie, Sepideh Hamzehlou, Amir Reza Katebi, Noorahmad Latifi, Masoud Mozafari, Francesco Baino
In this research, the osteoinduction effect of a novel variant of bone morphogenetic protein-7 (BMP-7), delivered through bone marrow mesenchymal stem cells (BM-MSCs) seeded on bioactive glass/gelatin nanocomposite scaffolds, was evaluated in a calvarial critical size defect in rats. After being harvested and characterized in vitro, BM-MSCs were infected by a plasmid vector containing BMP-7 encoding gene enriched with a heparin-binding site (B2BMP-7) to assess its osteogenic effects in vivo. The animals were randomly categorized into three groups receiving the scaffold alone (group I), the scaffold seeded with BM-MSCs (group II), and the scaffold seeded with manipulated BM-MSCs (group III)...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28401593/low-dose-bmp-2-and-msc-dual-delivery-onto-coral-scaffold-for-critical-size-bone-defect-regeneration-in-sheep
#7
Adeline Decambron, Alexandre Fournet, Morad Bensidhoum, Mathieu Manassero, Frédéric Sailhan, Hervé Petite, Delphine Logeart-Avramoglou, Véronique Viateau
Tissue-engineered constructs (TECs) combining resorbable calcium-based scaffolds and mesenchymal stem cells (MSCs) have the capability to regenerate large bone defects. Inconsistent results have, however, been observed, with a lack of osteoinductivity as a possible cause of failure. This study aimed to evaluate the impact of the addition of low-dose bone morphogenetic protein-2 (BMP-2) to MSC-coral-TECs on the healing of clinically-relevant segmental bone defects in sheep. Coral granules were either seeded with autologous MSCs (bone marrow-derived) or loaded with BMP-2...
April 12, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28397746/non-anticoagulant-heparins-are-hepcidin-antagonists-for-the-treatment-of-anemia
#8
REVIEW
Maura Poli, Michela Asperti, Paola Ruzzenenti, Annamaria Naggi, Paolo Arosio
The peptide hormone hepcidin is a key controller of systemic iron homeostasis, and its expression in the liver is mainly regulated by bone morphogenetic proteins (BMPs), which are heparin binding proteins. In fact, heparins are strong suppressors of hepcidin expression in hepatic cell lines that act by inhibiting the phosphorylation of SMAD1/5/8 proteins elicited by the BMPs. The inhibitory effect of heparins has been demonstrated in cells and in mice, where subcutaneous injections of non-anticoagulant heparins inhibited liver hepcidin expression and increased iron bioavailability...
April 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28387228/calcium-oxalate-crystals-and-oxalate-induce-an-epithelial-to-mesenchymal-transition-in-the-proximal-tubular-epithelial-cells-contribution-to-oxalate-kidney-injury
#9
Marcia Bastos Convento, Edson Andrade Pessoa, Edgar Cruz, Maria Aparecida da Glória, Nestor Schor, Fernanda Teixeira Borges
TGF-β1 is the main mediator of epithelial-to-mesenchymal transition (EMT). Hyperoxaluria induces crystalluria, interstitial fibrosis, and progressive renal failure. This study analyzed whether hyperoxaluria is associated with TGF-β1 production and kidney fibrosis in mice and if oxalate or calcium oxalate (CaOx) could induce EMT in proximal tubule cells (HK2) and therefore contribute to the fibrotic process. Hyperoxaluria was induced by adding hydroxyproline and ethylene glycol to the mice's drinking water for up to 60 days...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28385008/use-of-stem-cell-sheets-expressing-bone-morphogenetic-protein-7-in-the-management-of-a-nonunion-radial-fracture-in-a-toy-poodle
#10
Jaeyong Song, Yongsun Kim, Oh-Kyeong Kweon, Byung-Jae Kang
A 12-year-old castrated Toy Poodle was referred to Kangwon National University Animal Hospital with an oligotrophic nonunion fracture in the left distal 1/3 of the radius and an intact ulna. After fixation using a locking plate and screws, adipose-derived mesenchymal stem cell sheets expressing bone morphogenetic protein 7 (BMP-7) were transplanted to the fracture site to enhance the healing activity. The fracture healed at 9 weeks after surgery. In the present case, the mesenchymal stem cell sheets expressing BMP-7 promoted bone regeneration and healing in a nonunion fracture...
April 6, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28381236/microglia-activation-is-essential-for-bmp7-mediated-retinal-reactive-gliosis
#11
Subramanian Dharmarajan, Debra L Fisk, Christine M Sorenson, Nader Sheibani, Teri L Belecky-Adams
BACKGROUND: Our previous studies have shown that BMP7 is able to trigger activation of retinal macroglia. However, these studies showed the responsiveness of Müller glial cells and retinal astrocytes in vitro was attenuated in comparison to those in vivo, indicating other retinal cell types may be mediating the response of the macroglial cells to BMP7. In this study, we test the hypothesis that BMP7-mediated gliosis is the result of inflammatory signaling from retinal microglia. METHODS: Adult mice were injected intravitreally with BMP7 and eyes harvested 1, 3, or 7 days postinjection...
April 5, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28350991/serum-proteases-potentiate-bmp-induced-cell-cycle-re-entry-of-dedifferentiating-muscle-cells-during-newt-limb-regeneration
#12
Ines Wagner, Heng Wang, Philipp M Weissert, Werner L Straube, Anna Shevchenko, Marc Gentzel, Goncalo Brito, Akira Tazaki, Catarina Oliveira, Takuji Sugiura, Andrej Shevchenko, András Simon, David N Drechsel, Elly M Tanaka
Limb amputation in the newt induces myofibers to dedifferentiate and re-enter the cell cycle to generate proliferative myogenic precursors in the regeneration blastema. Here we show that bone morphogenetic proteins (BMPs) and mature BMPs that have been further cleaved by serum proteases induce cell cycle entry by dedifferentiating newt muscle cells. Protease-activated BMP4/7 heterodimers that are present in serum strongly induced myotube cell cycle re-entry with protease cleavage yielding a 30-fold potency increase of BMP4/7 compared with canonical BMP4/7...
March 27, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28342056/formulation-delivery-and-stability-of-bone-morphogenetic-proteins-for-effective-bone-regeneration
#13
REVIEW
Inas El Bialy, Wim Jiskoot, M Reza Nejadnik
Bone morphogenetic proteins (BMPs) are responsible for bone formation during embryogenesis and bone regeneration and remodeling. The osteoinductive action of BMPs, especially BMP-2 and BMP-7, has led to their use in a range of insurmountable treatments where intervention is required for effective bone regeneration. Introduction of BMP products to the market, however, was not without reports of multiple complications and side effects. Aiming for optimization of the therapeutic efficacy and safety, efforts have been focused on improving the delivery of BMPs to lower the administered dose, localize the protein, and prolong its retention time at the site of action...
March 24, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28334520/new-approach-for-vertical-bone-regeneration-using-in-situ-gelling-and-sustained-bmp-2-releasing-poly-phosphazene-hydrogel-system-on-peri-implant-site-with-critical-defect-in-a-canine-model
#14
Bo-Bae Seo, Hae-Im Chang, Hyuck Choi, Jeong-Tae Koh, Kwi-Dug Yun, Jae-Yeol Lee, Soo-Chang Song
An injectable hydrogel system with sustained bone morphogenetic protein 2 (BMP-2) release ability was developed for vertical bone regeneration at peri-implant sites and enhanced osseointegration of dental implants. In three young male beagle dogs, a pair of defects was created on both sides of the mandibular bone. Next, two implants were transplanted into each defect. In situ gelling polymer solutions with or without BMP-2 were applied to cover the implants and mandibular defects. The effects of the in situ gelling and sustained BMP-2 releasing (IGSR) hydrogel system on peri-implant bone regeneration were evaluated by radiologic examination, micro-computed tomography, and histomorphometric analysis...
March 23, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28332131/biostimulation-with-diode-laser-positively-regulates-cementoblast-functions-in-vitro
#15
Serife Buket Bozkurt, Erdogan E Hakki, Seyit Ali Kayis, Niyazi Dundar, Sema S Hakki
The aim of this study was to evaluate the effects of diode laser biostimulation on cementoblasts (OCCM.30). A total of 40 root plates were obtained from healthy third molar teeth and assigned to the following two groups: (1) control group and (2) laser-treated group. Root plates were placed into the cell culture inserts, and OCCM.30 cells were seeded onto root plates. Cells were irradiated with a low level of diode laser (power: 0.3 W in continuous wave, 60 s/cm(2)). Proliferation and mineralized tissue-associated gene's and BMP's messenger RNA (mRNA) expressions of cementoblasts were evaluated...
March 22, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28324064/bmp7-induces-uterine-receptivity-and-blastocyst-attachment
#16
Diana Monsivais, Caterina Clementi, Jia Peng, Paul T Fullerton, Renata Prunskaite-Hyyryläinen, Seppo J Vainio, Martin M Matzuk
In women, the window of implantation is limited to a brief 2- to 3-day period characterized by optimal levels of circulating ovarian hormones and a receptive endometrium. Although the window of implantation is assumed to occur 8 to 10 days after ovulation in women, molecular markers of endometrial receptivity are necessary to determine optimal timing prior to embryo transfer. Previous studies showed that members of the bone morphogenetic protein (BMP) family are expressed in the uterus necessary for female fertility; however, the role of BMP7 during implantation and in late gestation is not known...
April 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28319735/different-combinations-of-growth-factors-for-the-tenogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-in-monolayer-culture-and-in-fibrin-based-three-dimensional-constructs
#17
Marta Bottagisio, Silvia Lopa, Valentina Granata, Giuseppe Talò, Chiara Bazzocchi, Matteo Moretti, Arianna Barbara Lovati
Tendon injuries are severe burdens in clinics. The poor tendon healing is related to an ineffective response of resident cells and inadequate vascularization. Thanks to the high proliferation and multi-lineage differentiation capability, bone marrow-derived mesenchymal stem cells (BMSCs) are a promising cell source to support the tendon repair. To date, the association of various growth factors to induce the in vitro tenogenic differentiation of multipotent progenitor cells is poorly investigated. This study aimed to investigate the tenogenic differentiation of rabbit BMSCs by testing the combination of bone morphogenetic proteins (BMP-12 and 14) with transforming growth factor beta (TGF-β) and vascular endothelial growth factor (VEGF) both in 2D and 3D cultures within fibrin-based constructs...
March 16, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28318167/-changes-in-ultrastructure-and-bone-morphogenetic-protein-expression-in-reconstructed-mandibular-condylar-cartilage-under-continuous-mandibular-advancement-in-adult-rats
#18
Yang Shuai, Li Xue, Gao Jie, Cai Yizhi, Li Ronghui, Wang Mingguo
OBJECTIVE: This study investigated the reconstructed mandibular condylar cartilage and the ultrastructural variations in mandibular condylar cartilage in adult rats as a result of mandibular advancement. METHODS: Thirty 9-week-old male Sprague-Dawley rats were randomly divided into experimental and control groups. Rats in the experimental group were subjected to mandibular advancement. Rats were sacrificed on days 3, 7, 14, 21, 30. Sections were cut from condyles, and bone morphogenetic protein-2 (BMP-2) expression in condylar cartilage was examined through immunohistochemical analysis...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28303752/bone-morphogenetic-proteins-and-dickkopf-1-in-ankylosing-spondylitis
#19
H-T Liao, Y-F Lin, C-Y Tsai, T-C Chou
OBJECTIVES: To determine bone morphogenetic proteins (BMPs) and Dickkopf homologue-1 (Dkk-1) levels in ankylosing spondylitis (AS). METHOD: Serum BMPs and Dkk-1 were measured in 72 AS patients and 30 healthy controls. For AS patients, we recorded the demographic data, disease activity, functional index, and global assessment with questionnaires, and image changes with roentgenography. We also measured human leucocyte antigen-B27 and systemic inflammatory reactants...
March 17, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28276147/implant-guided-supracrestal-alveolar-bone-growth-using-scaffolds-bmp-2-and-novel-scaffold-retaining-device
#20
Bo Wen, David Shafer, Peter Schleier, David Pendrys, Liisa Kuhn, Martin Freilich
OBJECTIVE: To evaluate the efficacy of various scaffold systems and a Ti scaffold-retaining device with and without non-glycosylated rhBMP-2 (BMP-2) for increasing the vertical alveolar bone growth in the intra-oral mini-pig model. METHODS: Forty-eight Straumann Bone Level implants with hydrophilic (SLActive) surfaces were partially embedded in mandibles of 12 adult mini-pigs with the shoulder of the implant located 3 mm above the bone crest. Twenty-four implants were placed in conjunction with BMP-2 (50 μg) incorporated within resorbable scaffolds...
March 9, 2017: Clinical Oral Implants Research
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