Read by QxMD icon Read

Bone morphogenic protein 1

Xiao-Chuan Li, Yao-Hong Wu, Xue-Dong Bai, Wei Ji, Zi-Ming Guo, Chao-Feng Wang, Qing He, Di-Ke Ruan
Tissue engineering has shown great success in the treatment of intervertebral disk degeneration (IVDD) in the past decade. However, the adverse and harsh microenvironment associated in the intervertebral disks remains a great obstacle for the survival of transplanted cells. Although increasing numbers of new materials have been created or modified to overcome this hurdle, a new effective strategy of biological therapy is still required. In this study, bone morphogenic protein 7 (BMP7)-based functionalized self-assembling peptides were developed by conjugating a bioactive motif from BMP-7 (RKPS) onto the C-terminal of the peptide RADARADARADARADA (RADA16-I) at a ratio of 1:1 to form a new RADARKPS peptide...
October 2016: Tissue Engineering. Part A
Rebecca C Pollitt, Vrinda Saraff, Ann Dalton, Emma A Webb, Nick J Shaw, Glenda J Sobey, M Zulf Mughal, Emma Hobson, Farhan Ali, Nicholas J Bishop, Paul Arundel, Wolfgang Högler, Meena Balasubramanian
Osteogenesis Imperfecta (OI) is an inherited bone fragility disorder most commonly associated with autosomal dominant mutations in the type I collagen genes. Autosomal recessive mutations in a number of genes have also been described, including the BMP1 gene that encodes the mammalian Tolloid (mTLD) and its shorter isoform bone morphogenic protein-1 (BMP1). To date, less than 20 individuals with OI have been identified with BMP1 mutations, with skeletal phenotypes ranging from mild to severe and progressively deforming...
August 30, 2016: American Journal of Medical Genetics. Part A
Sudhakar S Agnihothram, Sheryl Anne Vermudez, Lisa Mullis, Todd A Townsend, Mugimane G Manjanatha, Marli P Azevedo
Noroviruses (NoV) are the leading cause of nonbacterial gastroenteritis in humans, and replicate extensively in the human gastrointestinal (GI) tract. Silica (also known as silicon dioxide, SiO2) nanoparticles (NPs) used in processed foods, dairy products, and beverages also accumulate in the GI tract. We investigated the effect of silica NPs on NoV replication and host cell response during virus infection, using murine norovirus (MNV-1) infection of RAW 264.7 murine macrophages. Pretreatment with 10 μg/ml silica significantly reduced the viability of macrophages, but no cumulative effects on viability of macrophages were observed with MNV-1 infection...
July 2016: Journal of Nanoscience and Nanotechnology
Ugo Ripamonti, Ruqayya Parak, Roland M Klar, Caroline Dickens, Thérèse Dix-Peek, Raquel Duarte
The momentum to compose this Leading Opinion on the synergistic induction of bone formation suddenly arose when a simple question was formulated during a discussion session on how to boost the often limited induction of bone formation seen in clinical contexts. Re-examination of morphological and molecular data available on the rapid induction of bone formation by the recombinant human transforming growth factor-β3 (hTGF-β3) shows that hTGF-β3 replicates the synergistic induction of bone formation as invocated by binary applications of hOP-1:hTGF-β1 at 20:1 by weight when implanted in heterotopic sites of the rectus abdominis muscle of the Chacma baboon, Papio ursinus...
October 2016: Biomaterials
Ning-Yuan Chen, Scott D Collum, Fayong Luo, Tingting Weng, Thuy-Trahn Le, Adriana M Hernandez, Kemly Philip, Jose G Molina, Luis J Garcia-Morales, Yanna Cao, Tien C Ko, Javier Amione-Guerra, Odeaa Al-Jabbari, Raquel R Bunge, Keith Youker, Brian A Bruckner, Rizwan Hamid, Jonathan Davies, Neeraj Sinha, Harry Karmouty-Quintana
Idiopathic pulmonary fibrosis (IPF) is a lethal lung disease of unknown etiology. The development of pulmonary hypertension (PH) is considered the single most significant predictor of mortality in patients with chronic lung diseases. The processes that govern the progression and development of fibroproliferative and vascular lesions in IPF are not fully understood. Using human lung explant samples from patients with IPF with or without a diagnosis of PH as well as normal control tissue, we report reduced BMPR2 expression in patients with IPF or IPF+PH...
August 1, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
Vineet Gupta, Dina V Lyne, Marilyn Barragan, Cory J Berkland, Michael S Detamore
Bioceramic mixtures of tricalcium phosphate (TCP) and hydroxyapatite (HAp) are widely used for bone regeneration because of their excellent cytocompatibility, osteoconduction, and osteoinduction. Therefore, we hypothesized that incorporation of a mixture of TCP and HAp in microsphere-based scaffolds would enhance osteogenesis of rat bone marrow stromal cells (rBMSCs) compared to a positive control of scaffolds with encapsulated bone-morphogenic protein-2 (BMP-2). Poly(D,L-lactic-co-glycolic acid) (PLGA) microsphere-based scaffolds encapsulating TCP and HAp mixtures in two different ratios (7:3 and 1:1) were fabricated with the same net ceramic content (30 wt%) to evaluate how incorporation of these ceramic mixtures would affect the osteogenesis in rBMSCs...
July 2016: Journal of Materials Science. Materials in Medicine
Yao He, Zhenyu Ou, Xiang Chen, Xiongbing Zu, Longfei Liu, Yuan Li, Zhenzhen Cao, Minfeng Chen, Zhi Chen, Hequn Chen, Lin Qi, Long Wang
Compelling evidence suggests that benign prostatic hyperplasia (BPH) development involves accumulation of mesenchymal-like cells derived from the prostatic epithelium by epithelial-mesenchymal transition (EMT). Transforming growth factor (TGF)-β induces EMT phenotypes with low E-cadherin and high vimentin expression in prostatic epithelial cells. Here we report that LPS/TLR4 signalling induces down-regulation of the bone morphogenic protein and activin membrane-bound inhibitor (BAMBI), which enhances TGF-β signalling in the EMT process during prostatic hyperplasia...
2016: Scientific Reports
Xin Wang, Jun-Mei Xu, Ya-Ping Wang, Lin Yang, Zhi-Jian Li
Bone morphogenic protein-7 (BMP7) is a multifunctional cytokine with demonstrated neurogenic potential. Oligodendrocytes (OLs) death after spinal cord injury (SCI) contributes to demyelination of spared axons, even leading to a permanent neurological deficit. Therefore, therapeutic approaches to prevent OLs death after SCI should be considered. Since the effects of BMP7 on OLs after injury are largely unknown, we demonstrated the effects of BMP7 on TNF-α-induced OLs apoptosis in vitro. The effects of BMP7 on TNF-α-induced OLs apoptosis were verified by flow cytometry, spectrophotometry and western blotting on primary cultures from spinal cord of postnatal day 1 (P1) to P2 rats...
October 2016: International Journal of Developmental Neuroscience
Deepak Bushan Raina, Hanna Isaksson, Werner Hettwer, Ashok Kumar, Lars Lidgren, Magnus Tägil
In orthopedic surgery, large amount of diseased or injured bone routinely needs to be replaced. Autografts are mainly used but their availability is limited. Commercially available bone substitutes allow bone ingrowth but lack the capacity to induce bone formation. Thus, off-the-shelf osteoinductive bone substitutes that can replace bone grafts are required. We tested the carrier properties of a biphasic, calcium sulphate and hydroxyapatite ceramic material, containing a combination of recombinant human bone morphogenic protein-2 (rhBMP-2) to induce bone, and zoledronic acid (ZA) to delay early resorption...
2016: Scientific Reports
Francesca Cecchinato, Saba Atefyekta, Ann Wennerberg, Martin Andersson, Ryo Jimbo, Julia R Davies
OBJECTIVE: Mesoporous (MP) titania films used as implant coatings have recently been considered as release systems for controlled administration of magnesium to enhance initial osteoblast proliferation in vitro. Tuning of the pore size in such titania films is aimed at increasing the osteogenic potential through effects on the total loading capacity and the release profile of magnesium. METHODS: In this study, evaporation-induced self-assembly (EISA) was used with different structure-directing agents to form three mesoporous films with average pore sizes of 2nm (MP1), 6nm (MP2) and 7nm (MP3)...
July 2016: Dental Materials: Official Publication of the Academy of Dental Materials
David H Johnson, William R Taylor, Mohammed M Aboelsoud, Patrick H Foote, Tracy C Yab, Xiaoming Cao, Thomas C Smyrk, Edward V Loftus, Douglas W Mahoney, David A Ahlquist, John B Kisiel
BACKGROUND: Stool DNA testing in patients with inflammatory bowel disease (IBD) may detect colorectal cancer and advanced precancers with high sensitivity; less is known about the presence of DNA markers in small IBD lesions, their association with metachronous neoplasia, or contribution to stool test positivity. METHODS: At a single center in 2 blinded phases, we assayed methylated bone morphogenic protein 3, methylated N-Myc downstream-regulated gene 4, and mutant KRAS in DNA extracted from paraffin-embedded benign lesions, and matched control tissues of patients with IBD, who were followed for subsequent colorectal dysplasia...
July 2016: Inflammatory Bowel Diseases
Yun Liu, Li-Zhi Deng, Hai-Peng Sun, Jia-Yun Xu, Yi-Ming Li, Xin Xie, Li-Ming Zhang, Fei-Long Deng
OBJECTIVE: To compare the direct osteogenic effect between placental growth factor-2 (PlGF-2) and bone morphogenic protein-2 (BMP-2). METHODS: Three groups of PlGF-2/BMP-2-loaded heparin-N-(2-hydroxyl) propyl-3-trimethyl ammonium chitosan chloride (HTCC) nanocomplexes were prepared: those with 0.5 μg PlGF-2; with 1.0 μg BMP-2; and with 0.5 μg PlGF-2 combined with 1.0 μg BMP-2. The loading efficiencies and release profiles of these growth factors (GFs) in this nanocomplex system were quantified using enzyme-linked immunosorbent assay, their biological activities were evaluated using cell counting kit-8, cell morphology, and cell number counting assays, and their osteogenic activities were quantified using alkaline phosphatase and Alizarin Red S staining assays...
2016: International Journal of Nanomedicine
David T Broome, Nabanita S Datta
In this review, we have highlighted work that has clearly demonstrated that mitogen-activated protein kinase (MAPK) phosphatase-1 (MKP-1), a negative regulator of MAPKs, is an important signaling mediator in bone, muscle, and fat tissue homeostasis and differentiation. Further, we examined recent studies with particular focus on MKP-1 overexpression or deletion and its impact on tissues connected to bone. We also summarized regulation of MKP-1 by known skeletal regulators like parathyroid hormone (PTH)/PTH-related peptide (PTHrP) and bone morphogenic proteins...
May 2016: Connective Tissue Research
Aysan Lektemur Alpan, Hülya Toker, Hatice Ozer
BACKGROUND: Bone healing is impaired in diabetes mellitus (DM) cases. The aim of this study is to investigate, both morphometrically and immunohistochemically, the effect of gaseous ozone on bone healing in diabetic rat calvarial defects treated with xenografts. METHODS: DM was induced with 50 mg/kg intraperitoneal streptozotocin in 56 male Wistar rats. Study groups were as follows: 1) empty defect (control, n = 14); 2) xenograft (XG, n = 14); 3) empty defect treated with ozone therapy (control + ozone, n = 14); and 4) xenograft and ozone application (XG + ozone, n = 14)...
August 2016: Journal of Periodontology
Madhavan C Papanna, K A Saldanha, Binu Kurian, James A Fernandes, Stan Jones
The purpose of the study was to evaluate the safety and efficacy with the use of BMP-2 for treating persistent non-unions in children with underlying complex conditions. Between October 2006 and November 2010 in our unit, 15 patients were treated with rhBMP-2 to enhance bone union. There were nine females and six males with a mean age of 9.5 years (range 4-15) at time of surgery. Seventy-five per cent of the patients required revision of internal fixation with insertion of rhBMP-2 to the non-union site, and the reminder had freshening of the non-union site with rhBMP-2 application...
April 2016: Strategies in Trauma and Limb Reconstruction
Edward M De Robertis, Yuki Moriyama
The ancestral Chordin/bone morphogenetic protein (BMP) signaling pathway that establishes dorsal-ventral (D-V) patterning in animal development is one of the best understood morphogenetic gradients, and is established by multiple proteins that interact with each other in the extracellular space-including several BMPs, Chordin, Tolloid, Ont-1, Crossveinless-2, and Sizzled. The D-V gradient is adjusted redundantly by regulating the synthesis of its components, by direct protein-protein interactions between morphogens, and by long-range diffusion...
2016: Current Topics in Developmental Biology
Zoe Cesarz, Jessica L Funnell, Jianjun Guan, Kenichi Tamama
Cell therapy with adult mesenchymal stem cells (MSCs) is a promising approach to regenerative medicine and autoimmune diseases. There are various approaches to improve the efficacy of MSC-based therapeutics, and MSC preparation as spheroidal aggregates, or MSC spheroids, is a novel preparatory and delivery method. Spheroid formation induces a dramatic change in the gene expression profile of MSCs. Self-activation of interleukin-1 (IL1) signaling was shown to be upstream of both pro- and anti-inflammatory genes in MSC spheroids, but the molecular pathways that initiate IL1 signaling remain unknown...
April 15, 2016: Stem Cells and Development
Jinik Hwang, Sung-Suk Suh, Mirye Park, So Yun Park, Sukchan Lee, Taek-Kyun Lee
Triclosan (TCS; 2,4,4'-trichloro-2'-hydroxydiphenyl ether) is a broad-spectrum antibacterial agent used in common industrial, personal care and household products which are eventually rinsed down the drain and discharged with wastewater effluent. It is therefore commonly found in the aquatic environment, leading to the continual exposure of aquatic organisms to TCS and the accumulation of the antimicrobial and its harmful degradation products in their bodies. Toxic effects of TCS on reproductive and developmental progression of some aquatic organisms have been suggested but the underlying molecular mechanisms have not been defined...
February 16, 2016: Environmental Toxicology
Sanjit R Konda, Roy I Davidovitch, Kenneth A Egol
BACKGROUND: Although most humeral nonunions are successfully treated with a single procedure, some humeral nonunions are more difficult to heal and require multiple procedures. Current literature does not provide evidence describing how the prognosis for surgical repair in patients who develop humeral diaphyseal nonunions may be affected by initial operative versus nonoperative treatment. QUESTIONS/PURPOSES: The purpose of this study was to assess whether operative versus nonoperative treatment of acute humeral shaft fractures impacts outcome of subsequent repairs of humeral nonunions (NU) including the need for additional surgery and a comparison of pain relief (Visual Analogue Scale for pain) and functional outcome (Short Musculoskeletal Functional Assessment)...
February 2016: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
Gabriel Velez, C Nathaniel Roybal, Diana Colgan, Stephen H Tsang, Alexander G Bassuk, Vinit B Mahajan
IMPORTANCE: To better characterize posterior uveitis, vitreous samples from 15 patients were subjected to antibody arrays, and the expression levels of 200 human cytokines were evaluated. Expression was analyzed by 1-way analysis of variance (significance at P < .01), unsupervised cluster algorithm, and pathway analysis. OBSERVATIONS: Unbiased clustering of patients, based on their cytokine expression profile, suggested that particular protein networks and molecular pathways are altered in various forms of uveitis...
April 2016: JAMA Ophthalmology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"