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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
#1
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/28434979/synergistic-effects-of-bmp-2-bmp-6-or-bmp-7-with-human-plasma-fibronectin-onto-hydroxyapatite-coatings-a-comparative-study
#2
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/28427810/synthesis-of-novel-5-6-dehydrokawain-analogs-as-osteogenic-inducers-and-their-action-mechanisms
#3
Momochika Kumagai, Keisuke Nishikawa, Takashi Mishima, Izumi Yoshida, Masahiro Ide, Keiko Koizumi, Munetomo Nakamura, Yoshiki Morimoto
An imbalance between bone resorption by osteoclasts and bone formation by osteoblasts can cause bone loss and bone-related disease. In a previous search for natural products that increase osteogenic activity, we found that 5,6-dehydrokawain (1) from Alpinia zerumbet promotes osteoblastogenesis. In this study, we synthesized and evaluated series of 5,6-dehydrokawain analogs. Our structure-activity relationships revealed that alkylation of para or meta position of aromatic ring of 1 promote osteogenic activity...
April 6, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28426699/anti-il-20-monoclonal-antibody-inhibited-inflammation-and-protected-against-cartilage-destruction-in-murine-models-of-osteoarthritis
#4
Yu-Hsiang Hsu, Ya-Yu Yang, Man-Hsiang Huwang, Yun-Han Weng, I-Ming Jou, Po-Tin Wu, Tain-Yu Lin, Li-Wha Wu, Ming-Shi Chang
Osteoarthritis (OA) is a degenerative joint disease characterized by progressive destruction of articular cartilage. Interleukin (IL)-20 is a proinflammatory cytokine involved in the pathogenesis of rheumatoid arthritis. We investigated the role of IL-20 in OA and evaluated whether anti-IL-20 antibody (7E) treatment attenuates disease severity in murine models of surgery-induced OA. Immunohistochemical staining was used to detect IL-20 and its receptors expression in synovial tissue and cartilage from OA patients, and in OA synovial fibroblasts (OASFs) and chondrocytes (OACCs) from rodents with surgery-induced OA...
2017: PloS One
https://www.readbyqxmd.com/read/28420447/ck2-1-a-bone-morphogenetic-protein-receptor-type-ia-mimetic-peptide-repairs-cartilage-in-mice-with-destabilized-medial-meniscus
#5
Hemanth Akkiraju, Padma Pradeepa Srinivasan, Xian Xu, Xinqiao Jia, Catherine B Kirn Safran, Anja Nohe
BACKGROUND: Osteoarthritis (OA) of the knee involves degeneration of articular cartilage of the diarthrodial joints. Current treatment options temporarily relieve the joint pain but do not restore the lost cartilage. We recently designed a novel bone morphogenetic protein receptor type I (BMPRI) mimetic peptide, CK2.1, that activates BMPRIa signaling in the absence of bone morphogenetic protein (BMP). Our previous research demonstrated that CK2.1 induced chondrogenesis in vitro and in vivo; however, it is unknown if CK2...
April 18, 2017: Stem Cell Research & Therapy
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
#6
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/28366235/zinc-bioglasses-regulate-mineralization-in-human-dental-pulp-stem-cells
#7
Mei Huang, Robert G Hill, Simon C F Rawlinson
OBJECTIVE: A promising strategy in regenerative endodontics is the combination of human dental pulp stem cells (hDPSCs) with an appropriate biomaterial substrate. The effects of zinc and zinc containing bioactive glasses (ZnBGs) on hDPSCs have been characterized in this study. METHODS: ZnBGs were designed and produced. Then the odontogenic differentiation and mineralization potential of hDPSCs upon ZnBGs treatment were investigated. RESULTS: Free Zn ions (0-5ppm) enhanced proliferation and alkaline phosphatase (ALP) activity of hDPSCs...
March 30, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28360499/long-term-safety-and-efficacy-of-human-bone-morphogenetic-protein-hbmp-in-the-treatment-of-resistant-non-unions-and-failed-arthrodesis
#8
Arya Nick Shamie, Hamed Yazdanshenas, Eric Egan Johnson
The bone morphogenetic protein (BMP) has emerged as a suitable alternative to autogenous cancellous bone grafting and despite current knowledge about its mechanism; few studies provide evidence about the long-term safety of BMP. The aim of this investigation is to determine if BMP implantation is a safe and effective agent in a long-term setting for the treatment of patients with resistant non-unions and failed arthrodesis. This study is a retrospective case series study that was conducted on 55 patients who had received BMP...
January 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28335084/identification-of-new-bmp6-pro-peptide-mutations-in-patients-with-iron-overload
#9
Chiara Piubelli, Annalisa Castagna, Giacomo Marchi, Monica Rizzi, Fabiana Busti, Sadaf Badar, Monia Marchetti, Marco De Gobbi, Antonella Roetto, Luciano Xumerle, Eda Suku, Alejandro Giorgetti, Massimo Delledonne, Oliviero Olivieri, Domenico Girelli
Hereditary Hemochromatosis (HH) is a genetically heterogeneous disorder caused by mutations in at least 5 different genes (HFE, HJV, TFR2, SLC40A1, HAMP) involved in the production or activity of the liver hormone hepcidin, a key regulator of systemic iron homeostasis. Nevertheless, patients with an HH-like phenotype that remains completely/partially unexplained despite extensive sequencing of known genes are not infrequently seen at referral centers, suggesting a role of still unknown genetic factors. A compelling candidate is Bone Morphogenetic Protein 6 (BMP6), which acts as a major activator of the BMP-SMAD signaling pathway, ultimately leading to the upregulation of hepcidin gene transcription...
March 23, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28332131/biostimulation-with-diode-laser-positively-regulates-cementoblast-functions-in-vitro
#10
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/28326298/effects-of-escherichia-coli-derived-recombinant-human-bone-morphogenetic-protein-2-loaded-porous-hydroxyaptite-based-ceramics-on-calvarial-defect-in-rabbits
#11
Shin-Young Kim, Youngkyun Lee, Seung-Jun Seo, Jae-Hong Lim, Yong-Gun Kim
BACKGROUND: Recombinant human bone morphogenetic proteins (rhBMPs) have been widely used in regenerative therapies to promote bone formation. The production of rhBMPs using bacterial systems such as Escherichia coli (E. coli) is estimated to facilitate clinical applications by lowering the cost without compromising biological activity. In clinical practice, rhBMP-2 and osteoconductive carriers (e.g., hydroxyapatite [HA] and bovine bone xenograft) are used together. This study examined the effect of E...
February 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28303752/bone-morphogenetic-proteins-and-dickkopf-1-in-ankylosing-spondylitis
#12
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/28300526/effects-of-bone-morphogenetic-protein-4-bmp4-on-in-vitro-development-and-survival-of-bovine-preantral-follicles-enclosed-in-fragments-ovarian-tissue
#13
Ellen de Vasconcelos da Cunha, Glaucinete Borges de Souza, José Renato de Sousa Passos, Anderson Weiny Barbalho Silva, Andressa Minussi Dau, Márcia Viviane Alves Saraiva, Raimundo Nonato Braga Lobo, José Roberto Viana Silva
The aim of this study was to evaluate the effects of different concentrations of BMP4 on activation, development and mRNA expression of GDF9, BMP15, PCNA, Bax and Bcl2 in cultured bovine follicles enclosed in ovarian tissues. Ovarian tissue fragments were cultured for 6 days in α-MEM+ alone or supplemented with different concentrations of BMP4 (10, 50 or 100 ng/ml). Classical histology was performed to analyze follicle growth and morphology, while real-time PCR was used to analyze mRNA levels in fresh and cultured tissues...
March 16, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28287819/the-effect-of-a-breastfeeding-motivation-program-maintained-during-pregnancy-on-supporting-breastfeeding-randomized-controlled-trial
#14
Eda Cangöl, Nevin Hotun Şahin
BACKGROUND: Exclusive breastfeeding is the recommended breastfeeding method for infants during the first 6 postnatal months. OBJECTIVE: This study aimed to increase breastfeeding duration and frequency using a breastfeeding motivation program (BMP), which was structurally based on Pender's Health Promotion Model (HPM) and administered during pregnancy and the postnatal period. The study was also designed to determine the BMP effectiveness in supporting exclusive breastfeeding...
March 13, 2017: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/28275783/-effects-of-strontium-ranelate-on-the-expression-of-bmp-2-in-the-mid-palatal-suture-of-rats-during-rapid-maxillary-expansion
#15
Chao Xu, Xu-Xia Wang, Ying-Zi Wang, Pan-Pan Yang, Shu-Ya Zhao, Jun Zhang
PURPOSE: To investigate the effects of strontium ranelate on the expression of BMP-2 during rapid maxillary expansion. METHODS: Thirty-six male 6-week- old male Wistar rats were selected. They were randomly divided into 3 groups. Group A was designed as a control group. An expanded application producing 100 g force was fixed between the first and the second molar on both sides of the rats in group B and group C. 600 mg/kg strontium ranelate was given to the rats in group C daily via an orogastric route, while the equal normal saline was given to the rats in group B...
December 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28274194/the-combined-effects-of-nanotopography-and-sr-ion-for-enhanced-osteogenic-activity-of-bone-marrow-mesenchymal-stem-cells-bmscs
#16
Dandan Hu, Kai Li, Youtao Xie, Houhua Pan, Jun Zhao, Liping Huang, Xuebin Zheng
Both surface topography and chemistry have a significant influence on the biological performance of orthopedic implant coatings. In our study, a surface modification strategy embodying bioactive trace element incorporation and nanotopography construction was employed to enhance the osteogenic activity of calcium silicate (Ca-Si) coatings. We developed strontium-loaded nanolayer on plasma sprayed Ca-Si (CS) coating via hydrothermal treatment which was denoted as Sr-NT-CS. The original CS coating and the CS coating modified with similar nanotopography (NT-CS) were studied in parallel...
March 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28262033/fatty-acid-composition-and-anticancer-activity-in-colon-carcinoma-cell-lines-of-prunus-dulcis-seed-oil
#17
Filiz Mericli, Eda Becer, Hilal Kabadayı, Azmi Hanoglu, Duygu Yigit Hanoglu, Dudu Ozkum Yavuz, Temel Ozek, Seda Vatansever
CONTEXT: Almond oil is used in traditional and complementary therapies for its numerous health benefits due to high unsaturated fatty acids content. OBJECTIVES: This study investigated the composition and in vitro anticancer activity of almond oil from Northern Cyprus and compared with almond oil from Turkey. MATERIALS AND METHODS: Almond oil from Northern Cyprus was obtained by supercritical CO2 extraction and analyzed by GC-MS. Almond oil of Turkey was provided from Turkish pharmacies...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28260060/bioinformatics-analysis-on-the-differentiation-of-bone-mesenchymal-stem-cells-into-osteoblasts-and-adipocytes
#18
Xiaoyuan Xu, He Jiang, Xingnuan Li, Ping Wu, Jianyun Liu, Tao Wang, Xiaoou Zhou, Jianjun Xiong, Weidong Li
The present study aimed to screen several differentially expressed genes (DEGs) and differentially expressed microRNAs (miRNAs) for two types of mesenchymal stem cell (MSC) differentiation. Bone morphogenetic protein 6 (BMP‑6) and dexamethasone were used to induce MSCs towards osteoblastic differentiation or adipocytic differentiation. The t‑test in the Bioconductor bioinformatics software tool was used to screen DEGs and differentially expressed miRNAs in the two samples. Subsequent gene ontology (GO) and pathway analyses on the DEGs were performed using the GO and Kyoto Encyclopedia of Genes and Genomes databases, respectively; potential target genes for the screened miRNAs were predicted using the TargetScan database...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28256809/insulin-like-growth-factor-1-igf-1-enhances-the-osteogenic-activity-of-bone-morphogenetic-protein-6-bmp-6-in-vitro-and-in-vivo-and-together-have-a-stronger-osteogenic-effect-than-when-igf-1-is-combined-with-bmp-2
#19
Gustavo A Rico-Llanos, Jose Becerra, Rick Visser
Bone morphogenetic protein-2 (BMP-2) is widely used in orthopedic surgery and bone tissue engineering because of its strong osteogenic activity. However, BMP-2 treatments have several drawbacks and many groups are actively exploring alternatives. Since BMP-6 has been demonstrated to be more osteoinductive, its use, either alone or together with other growth factors, might be an interesting option. In this work, we have compared the effect of BMP-2, BMP-6, or insulin-like growth factor-1 (IGF-1), either alone or in combination...
March 3, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28256803/chitosan-agarose-scaffolds-supports-chondrogenesis-of-human-wharton-s-jelly-mesenchymal-stem-cells
#20
L P Merlin Rajesh Lal, G K Suraishkumar, Prabha D Nair
Tissue engineering strategies for cartilage aim to restore the complex biomechanical and biochemical properties of the native cartilage. To mimic the in vivo microenvironment, we developed a novel scaffold based on chitosan-agarose (CHAG scaffold) resembling the properties of native cartilage extracellular matrix (ECM) that aids in vitro cartilage formation. The CHAG scaffolds had pore size ranging from 75 to 300 µm and the degradation of 18% over 6 months in PBS. L929 cells and Human Wharton's Jelly-Mesenchymal Stem Cells (HWJ-MSCs) attached well and grew in the CHAG scaffolds...
March 3, 2017: Journal of Biomedical Materials Research. Part A
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