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https://www.readbyqxmd.com/read/29238641/complication-rates-in-posterior-lumbar-interbody-fusion-plif-surgery-with-human-bone-morphogenetic-protein-2-medicare-population
#1
Raed Alobaidaan, Jeremiah R Cohen, Elizabeth L Lord, Zorica Buser, S Tim Yoon, Jim A Youssef, Jong-Beom Park, Darrel S Brodke, Jeffrey C Wang, Hans-Joerg Meisel
Study Design: Retrospective cohort study among Medicare beneficiaries who underwent posterior lumbar interbody fusion (PLIF) surgery. Objective: To identify the complication rates associated with the use of bone morphogenetic protein 2 (BMP2) in PLIF. Human BMP2 is commonly used in the "off-label" manner for various types of spine fusion procedures, including PLIF. However, recent studies have reported potential complications associated with the recombinant human BMP2 (rhBMP2) use in the posterior approach...
December 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29236309/leptin-induces-mmp1-13-and-adamts-4-expressions-through-bone-morphogenetic-protein-2-autocrine-effect-in-human-chondrocytes
#2
Yu-Ping Su, Cheng-Nan Chen, Kuo-Chin Huang, Hsin-I Chang, Ko-Chao Lee, Chun-Min Lo, Shun-Fu Chang
The induction of bone morphogenetic protein (BMP) 2 in injured and arthritis articular cartilage has been proposed, but the precise mechanism has not been clearly clarified. Our previous study has found that leptin could stimulate the BMP2 autocrine effect to increase the anabolic collagen II expression when it initiates the catabolic response in human chondrocytes. It has been suggested that this BMP2 autocrine effect contributes to a reparative role in leptin-stimulated human chondrocytes. In this study, we further determined whether this BMP2 autocrine effect also affect the expressions of catabolic matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinase with thrombospondin motif (ADAMTS)...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29234951/zinc-finger-transcription-factor-odd-skipped-related-1-regulates-cranial-bone-formation
#3
Shinji Kawai, Masashi Yamauchi, Atsuo Amano
Knowledge of the molecular mechanisms of bone formation has been advanced by novel findings related to genetic control. Odd-skipped related 1 (Osr1) is known to play important roles in embryonic, heart, and urogenital development. To elucidate the in vivo function of Osr1 in bone formation, we generated transgenic mice overexpressing full-length Osr1 under control of its 2.8-kb promoter, which were smaller than their wild-type littermates. Notably, abnormalities in the skull of Osr1 transgenic mice were revealed by analysis of X-ray, skeletal preparation, and morphological findings, including round skull and cranial dysraphism...
December 12, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29234131/a-gene-expression-study-of-ornamental-fin-shape-in-neolamprologus-brichardi-an-african-cichlid-species
#4
Ehsan Pashay Ahi, Florian Richter, Kristina M Sefc
The diversity of fin morphology within and across fish taxa offers great, but still largely unexplored, opportunities to investigate the proximate mechanisms underlying fin shape variation. Relying on available genetic knowledge brought forth mainly by the comprehensive study of the zebrafish caudal fin, we explored candidate molecular mechanisms for the maintenance and formation of the conspicuously elongated filaments adorning the unpaired fins of the East African "princess cichlid" Neolamprologus brichardi...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29233551/generation-of-adrenal-chromaffin-like-cells-from-human-pluripotent-stem%C3%A2-cells
#5
Kwaku Dad Abu-Bonsrah, Dongcheng Zhang, Andrew R Bjorksten, Mirella Dottori, Donald F Newgreen
Adrenomedullary chromaffin cells are catecholamine (CA)-producing cells originating from trunk neural crest (NC) via sympathoadrenal progenitors (SAPs). We generated NC and SAPs from human embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) in vitro via BMP2/FGF2 exposure, ascertained by qPCR and immunoexpression of SOX10, ASCL1, TFAP2α, and PHOX2B, and by fluorescence-activated cell sorting selection for p75NTR and GD2, and confirmed their trunk-like HOX gene expression. We showed that continuing BMP4 and curtailing FGF2 in vitro, augmented with corticosteroid mimetic, induced these cells to upregulate the chromaffin cell-specific marker PNMT and other CA synthesis and storage markers, and we demonstrated noradrenaline and adrenaline by Faglu and high-performance liquid chromatography...
November 27, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/29233086/functional-polymorphisms-in-asporin-and-cilp-together-with-joint-loading-predispose-to-hand-osteoarthritis
#6
Mari Taipale, Svetlana Solovieva, Päivi Leino-Arjas, Minna Männikkö
BACKGROUND: Osteoarthritis (OA) is the most common degenerative joint disease afflicting people in the Western world and has a strong genetic influence. The aim of this study was to examine the association of two known functional polymorphisms in the TGF-β inhibiting genes, asporin (ASPN) and cartilage intermediate layer protein (CILP), with hand OA and potential gene-occupational hand loading interaction. RESULTS: Statistically significant interaction of the CILP rs2073711 T and ASPN D15 alleles with hand OA was observed (OR = 2...
December 12, 2017: BMC Genetics
https://www.readbyqxmd.com/read/29232368/ascorbic-acid-promotes-cardiomyogenesis-through-smad1-signaling-in-differentiating-mouse-embryonic-stem-cells
#7
Maria Grazia Perino, Satoshi Yamanaka, Daniel R Riordon, Yelena Tarasova, Kenneth R Boheler
Numerous groups have documented that Ascorbic Acid (AA) promotes cardiomyocyte differentiation from both mouse and human ESCs and iPSCs. AA is now considered indispensable for the routine production of hPSC-cardiomyocytes (CMs) using defined media; however, the mechanisms involved with the inductive process are poorly understood. Using a genetically modified mouse embryonic stem cell (mESC) line containing a dsRED transgene driven by the cardiac-restricted portion of the ncx1 promoter, we show that AA promoted differentiation of mESCs to CMs in a dose- and time-dependent manner...
2017: PloS One
https://www.readbyqxmd.com/read/29230527/lefty2-inhibits-endometrial-receptivity-by-downregulating-orai1-expression-and-store-operated-ca2-entry
#8
Madhuri S Salker, Yogesh Singh, Ruban R Peter Durairaj, Jing Yan, Md Alauddin, Ni Zeng, Jennifer H Steel, Shaqiu Zhang, Jaya Nautiyal, Zoe Webster, Sara Y Brucker, Diethelm Wallwiener, B Anne Croy, Jan J Brosens, Florian Lang
Early embryo development and endometrial differentiation are initially independent processes, and synchronization, imposed by a limited window of implantation, is critical for reproductive success. A putative negative regulator of endometrial receptivity is LEFTY2, a member of the transforming growth factor (TGF)-β family. LEFTY2 is highly expressed in decidualizing human endometrial stromal cells (HESCs) during the late luteal phase of the menstrual cycle, coinciding with the closure of the window of implantation...
December 11, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29230389/cyclic-tensile-strain-can-play-a-role-in-directing-both-intramembranous-and-endochondral-ossification-of-mesenchymal-stem-cells
#9
Simon F Carroll, Conor T Buckley, Daniel J Kelly
Successfully regenerating damaged or diseased bone and other joint tissues will require a detailed understanding of how joint specific environmental cues regulate the fate of progenitor cells that are recruited or delivered to the site of injury. The goal of this study was to explore the role of cyclic tensile strain (CTS) in regulating the initiation of mesenchymal stem cell/multipotent stromal cell (MSC) differentiation, and specifically their progression along the endochondral pathway. To this end, we first explored the influence of CTS on the differentiation of MSCs in the absence of any specific growth factor, and secondly, we examined the influence of the long-term application of this mechanical stimulus on markers of endochondral ossification in MSCs maintained in chondrogenic culture conditions...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29227562/crosstalk-between-substance-p-and-calcitonin-gene-related-peptide-during-heterotopic-ossification-in-murine-achilles-tendon
#10
Ceren Tuzmen, Kostas Verdelis, Lee Weiss, Phil Campbell
Heterotopic ossification (HO) is abnormal bone formation within soft tissue, usually predisposed by neurogenic or musculoskeletal trauma. Inflammation resulting from trauma is considered to be the main trigger for HO by eliciting changes within the injury site, including elevation of bone morphogenetic proteins (BMPs). Recent research, however, has also associated changes in sensory neuropeptide expression with HO. Substance P (SP) and calcitonin gene-related peptide (CGRP) are two of those neuropeptides that have been implicated with various aspects of HO, including regulation of inflammation and BMP signaling...
December 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29227558/rna-sequencing-identifies-gene-regulatory-networks-controlling-extracellular-matrix-synthesis-in-intervertebral-disk-tissues
#11
Scott M Riester, Yang Lin, Wei Wang, Lin Cong, Abdel-Moneim Mohamed Ali, Sun H Peck, Lachlan J Smith, Bradford L Currier, Michelle Clark, Paul Huddleston, William Krauss, Michael J Yaszemski, Mark E Morrey, Matthew P Abdel, Mohamad Bydon, Wenchun Qu, A Noelle Larson, Andre J van Wijnen, Ahmad Nassr
Degenerative disk disease of the spine is a major cause of back pain and disability. Optimization of regenerative medical therapies for degenerative disk disease requires a deep mechanistic understanding of the factors controlling the structural integrity of spinal tissues. In this investigation, we sought to identify candidate regulatory genes controlling extracellular matrix synthesis in spinal tissues. To achieve this goal we performed high throughput next generation RNA sequencing on 39 annulus fibrosus and 21 nucleus pulposus human tissue samples...
December 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29223538/curcumin-induces-osteoblast-differentiation-through-mild-endoplasmic-reticulum-stress-mediated-such-as-bmp2-on-osteoblast-cells
#12
Hyo-Eun Son, Eun-Jung Kim, Won-Gu Jang
AIMS: Curcumin (diferuloylmethane or [1E,6E]-1,7-bis[4-hydroxy-3-methoxyphenyl]-1,6heptadiene-3,5-dione) is a phenolic natural product derived from the rhizomes of the turmeric plant, Curcuma longa. It is reported to have various biological actions such as anti-oxidative, anti-inflammatory, and anti-cancer effects. However, the molecular mechanism of osteoblast differentiation by curcumin has not yet been reported. MAIN METHODS: The cytotoxicity of curcumin was identified using the 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
December 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/29222456/bmps-as-new-insulin-sensitizers-enhanced-glucose-uptake-in-mature-3t3-l1-adipocytes-via-ppar%C3%AE-and-glut4-upregulation
#13
Isabelle Schreiber, Gina Dörpholz, Claus-Eric Ott, Bjørt Kragesteen, Nancy Schanze, Cory Thomas Lee, Josef Köhrle, Stefan Mundlos, Karen Ruschke, Petra Knaus
Insulin-resistance is the main cause of type 2 diabetes. Here we describe the identification and characterization of BMP2 and BMP6 as new insulin-sensitizing growth factors in mature adipocytes. We show that BMP2 and BMP6 lead to enhanced insulin-mediated glucose uptake in both insulin-sensitive and -insensitive adipocytes. We exclude a direct effect of BMP2 or BMP6 on translocation of GLUT4 to the plasma membrane and demonstrate that these BMPs increase GLUT4 protein levels equipotent to Rosiglitazone. BMPs induce expression of PPARγ as the crucial mediator for the insulin-sensitizing effect...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29216500/strontium-and-bisphosphonate-coated-iron-foam-scaffolds-for-osteoporotic-fracture-defect-healing
#14
Seemun Ray, Ulrich Thormann, Marlen Eichelroth, Matthäus Budak, Christoph Biehl, Markus Rupp, Ursula Sommer, Thaqif El Khassawna, Francisca I Alagboso, Marian Kampschulte, Marcus Rohnke, Anja Henß, Klaus Peppler, Vanessa Linke, Peter Quadbeck, Axel Voigt, Florian Stenger, Daniel Karl, Reinhard Schnettler, Christian Heiss, Katrin S Lips, Volker Alt
The purpose of this work was to investigate new bone formation in macroporous iron foams coated with strontium (FeSr) or bisphosphonate (FeBiP) compared to plain iron foam (Fe) and empty defect in a critical size metaphyseal bone defect model in ovariectomized rats. 60 female rats were subjected to bilateral ovariectomy and multi-deficient diet for 3 months. A 4 mm wedge shaped metaphyseal osteotomy was created, fixed with a mini-plate and subsequently filled with Fe, FeSr, FeBiP or left empty. After 6 weeks, μCt analysis revealed a statistically significant increased bone formation at the implant interface in FeSr compared to FeBiP (p = 0...
December 1, 2017: Biomaterials
https://www.readbyqxmd.com/read/29207475/function-of-micrornas-in-the-osteogenic-differentiation-and-therapeutic-application-of-adipose-derived-stem-cells-ascs
#15
REVIEW
Walter M Hodges, Frederick O'Brien, Sadanand Fulzele, Mark W Hamrick
Traumatic wounds with segmental bone defects represent substantial reconstructive challenges. Autologous bone grafting is considered the gold standard for surgical treatment in many cases, but donor site morbidity and associated post-operative complications remain a concern. Advances in regenerative techniques utilizing mesenchymal stem cell populations from bone and adipose tissue have opened the door to improving bone repair in the limbs, spine, and craniofacial skeleton. The widespread availability, ease of extraction, and lack of immunogenicity have made adipose-derived stem cells (ASCs) particularly attractive as a stem cell source for regenerative strategies...
December 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29198724/monoallelic-bmp2-variants-predicted-to-result-in-haploinsufficiency-cause-craniofacial-skeletal-and-cardiac-features-overlapping-those-of-20p12-deletions
#16
Tiong Yang Tan, Claudia Gonzaga-Jauregui, Elizabeth J Bhoj, Kevin A Strauss, Karlla Brigatti, Erik Puffenberger, Dong Li, LiQin Xie, Nanditha Das, Ioanna Skubas, Ron A Deckelbaum, Virginia Hughes, Susannah Brydges, Sarah Hatsell, Chia-Jen Siao, Melissa G Dominguez, Aris Economides, John D Overton, Valerie Mayne, Peter J Simm, Bryn O Jones, Stefanie Eggers, Gwenaël Le Guyader, Fanny Pelluard, Tobias B Haack, Marc Sturm, Angelika Riess, Stephan Waldmueller, Michael Hofbeck, Katharina Steindl, Pascal Joset, Anita Rauch, Hakon Hakonarson, Naomi L Baker, Peter G Farlie
Bone morphogenetic protein 2 (BMP2) in chromosomal region 20p12 belongs to a gene superfamily encoding TGF-β-signaling proteins involved in bone and cartilage biology. Monoallelic deletions of 20p12 are variably associated with cleft palate, short stature, and developmental delay. Here, we report a cranioskeletal phenotype due to monoallelic truncating and frameshift BMP2 variants and deletions in 12 individuals from eight unrelated families that share features of short stature, a recognizable craniofacial gestalt, skeletal anomalies, and congenital heart disease...
November 23, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29191397/the-inhibitory-effect-of-aconiti-sinomontani-radix-extracts-on-the-proliferation-and-migration-of-human-synovial-fibroblast-cell-line-sw982
#17
Xue Deng, Lu-Ping Zheng, Zhen-Qiang Mu, Rui Lai, Guo-Ping Niu, Liang-Ping Tu, Di Zhu, Yan-Qiu Liu
ETHNOPHARMACOLOGICAL RELEVANCE: Aconiti Sinomontani Radix is frequently used in the treatment of Bi syndrome in traditional Chinese medicine. Several reports indicate that Aconiti Sinomontani Radix has therapeutic effects for rheumatoid arthritis (RA). However, the cellular mode of action is still unclear. To investigate the effect of alkaloid extracts of Aconiti Sinomontani Radix on proliferation and migration of human synovial sarcoma SW982 cells as well as the molecular mechanism underlying...
November 27, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29180008/identification-and-characterization-of-human-bone-derived-cells
#18
Sungsin Jo, Jin Kyu Lee, Jinil Han, Bitnara Lee, Suman Kang, Kyu-Tae Hwang, Ye-Soo Park, Tae-Hwan Kim
This study was designed to identify and characterize primary bone-derived cells (BdCs) and investigate the potential role of osteoblast differentiation. Primary BdCs were isolated from surgical bone for comparative analysis with mesenchymal stem cells (MSCs) and fetal osteoblasts (FOBs) and for potential differentiation to mature osteoblasts. Using three different cells, we successfully cultivated human osteoblast differentiation and activity which were evaluated using microarray and biochemical methods. BdCs are more correlated to MSCs in bioinformatics result and similar with FOBs in gene expression...
November 24, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29179436/osteoblast-oriented-differentiation-of-bmscs-by-co-culturing-with-composite-scaffolds-constructed-using-silicon-substituted-calcium-phosphate-autogenous-fine-particulate-bone-powder-and-alginate-in-vitro
#19
Ye Tian, Li-Huang Cui, Shou-Yang Xiang, Wen-Xiao Xu, De-Chun Chen, Rui Fu, Chang-Long Zhou, Xiao-Qi Liu, Yu-Fu Wang, Xin-Tao Wang
Autogenous bone graft is the best for spinal fusion in clinics, however, lacking sources, bleeding and infection are limited its practice. Seeking alternative materials are urgent for orthopaedic surgeon. Here, we evaluated osteoblast-oriented differentiation of rabbit BMSCs by co-culturing with composite scaffolds constructed using silicon-substituted-CaP-fine particulate bone powder-alginate. Using CCk8-kit, biocompatibility was evaluated by testing BMSCs proliferation; morphology and survival of osteoblasts within scaffolds were observed using EM and HE staining; growth factors and related genes were detected using RT-PCR...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29176755/baculovirus-mediated-mir-214-knockdown-shifts-osteoporotic-ascs-differentiation-and-improves-osteoporotic-bone-defects-repair
#20
Kuei-Chang Li, Yu-Han Chang, Mu-Nung Hsu, Shih-Chun Lo, Wan-Hua Li, Yu-Chen Hu
Osteoporotic patients often suffer from bone fracture but its healing is compromised due to impaired osteogenesis potential of bone marrow-derived mesenchymal stem cells (BMSCs). Here we aimed to exploit adipose-derived stem cells from ovariectomized rats (OVX-ASCs) for bone healing. We unraveled that OVX-ASCs highly expressed miR-214 and identified 2 miR-214 targets: CTNNB1 (β-catenin) and TAB2. We demonstrated that miR-214 targeting of these two genes blocked the Wnt pathway, led to preferable adipogenesis and hindered osteogenesis...
November 24, 2017: Scientific Reports
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