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Pulp regeneration

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https://www.readbyqxmd.com/read/28727999/drug-ion-co-delivery-multi-functional-nanocarrier-to-regenerate-infected-tissue-defect
#1
Jung-Hwan Lee, Ahmed El-Fiqi, Nandin Mandakhbayar, Hae-Hyoung Lee, Hae-Won Kim
Regeneration of infected tissues is a globally challenging issue in medicine and dentistry. Common clinical therapies involving a complete removal of infected areas together with a treatment of antimicrobial drugs are often suboptimal. Biomaterials with anti-bacterial and pro-regenerative potential can offer a solution to this. Here we design a novel nanocarrier based on a mesoporous silicate-calcium glass by doping with Ag ions and simultaneously loading antimicrobial drugs onto mesopores. The nanocarriers could controllably release multiple ions (silver, calcium, and silicate) and drugs (tetracycline or chlorohexidine) to levels therapeutically relevant, and effectively internalize to human dental stem cells (∼90%) with excellent viability, ultimately stimulating odontogenic differentiation...
July 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28713908/comparison-of-gene-expression-profiles-between-dental-pulp-and-periodontal-ligament-tissues-in-humans
#2
Ai-Xiu Gong, Jing-Han Zhang, Jing Li, Jun Wu, Lin Wang, Deng-Shun Miao
There are anatomical and functional differences between human dental pulp (DP) and periodontal ligament (PDL). However, the molecular biological differences and function of these tissues are poorly understood. In the present study, we employed a cDNA microarray array to screen for differentially expressed genes (DEGs) between human DP and PDL tissues, and used the online software WebGestalt to perform the functional analysis of the DEGs. In addition, the STRING database and KEGG pathway analysis were applied for interaction network and pathway analysis of the DEGs...
July 12, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28713017/intracellular-co-delivery-of-sr-ion-and-phenamil-drug-through-mesoporous-bioglass-nanocarriers-synergizes-bmp-signaling-and-tissue-mineralization
#3
Jung-Hwan Lee, Nandin Mandakhbayar, Ahmed El-Fiqi, Haw-Won Kim
Inducing differentiation and maturation of resident multipotent stem cells (MSCs) is an important strategy to regenerate hard tissues in mal-calcification conditions. Here we explore a co-delivery approach of therapeutic molecules comprised of ion and drug through a mesoporous bioglass nanoparticle (MBN) for this purpose. Recently, MBN has offered unique potential as a nanocarrier for hard tissues, in terms of high mesoporosity, bone bioactivity (and possibly degradability), tunable delivery of biomolecules, and ionic modification...
July 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28692829/effects-of-melatonin-on-the-proliferation-and-differentiation-of-human-dental-pulp-cells
#4
Qin Liu, Wenguo Fan, Yifan He, Fuping Zhang, Xiaoyan Guan, Qianyi Deng, Xianjun Lu, Hongwen He, Fang Huang
OBJECTIVE: Effects of melatonin on the proliferation and differentiation of human dental pulp cells (hDPCs) remain unclear. The purpose of this study was to investigate the effect of melatonin on the proliferation and differentiation of the hDPCs. DESIGN: Primary hDPCs were obtained from the third molar of volunteer aged from 18 to 25. CCK8 assay evaluated the effect of melatonin upon cell proliferation at day 1, 2, 3, 4, 5. After 7days' osteogenic induction with melatonin or vehicle, alkaline phosphatase (ALP) activity was measured with a commercial kit...
June 30, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28671698/sustainable-sources-need-reliable-standards
#5
Maxim V Galkin, Davide Di Francesco, Ulrica Edlund, Joseph S M Samec
This review discusses the challenges within the research area of modern biomass fractionation and valorization. The current pulping industry focuses on pulp production and the resulting cellulose fiber. Hemicellulose and lignin are handled as low value streams for process heat and the regeneration of process chemicals. The paper and pulp industry have therefore developed analytical techniques to evaluate the cellulose fiber, while the other fractions are given a low priority. In a strive to also use the hemicellulose and lignin fractions of lignocellulosic biomass, moving towards a biorefining concept, there are severe shortcomings with the current pulping techniques and also in the analysis of the biomass...
July 3, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28667922/combination-of-hydroxyapatite-platelet-rich-fibrin-and-amnion-membrane-as-a-novel-therapeutic-option-in-regenerative-periapical-endodontic-surgery-case-series
#6
Uday Kiran Uppada, Butchibabu Kalakonda, Pradeep Koppolu, Narendra Varma, Kiran Palakurthy, Venkatesh Manchikanti, Shilpa Prasad, Shereen Samar, Lingam Amara Swapna
INTRODUCTION: Periapical surgery is the last resort in the arsenal of an endodontist to effectively deal with periapical lesions that result from necrosis of the pulp. Bone grafts, growth factors and membranes form an array of regenerative materials that influence the healing outcome of periapical surgery. PRESENTATION OF CASE: The main purpose of the two cases reported here was to assess the potential benefits of a combination of bone graft, platelet-rich fibrin (PRF) and amnion membrane in terms of reduced post-operative discomfort, radiographic evidence of accelerated periapical bone healing and present a novel therapeutic option in the management of large periapical lesions...
June 15, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28662879/use-of-platelet-rich-plasma-in-endodontic-procedures-in-adults-regeneration-or-repair-a-report-of-3-cases-with-5%C3%A2-years-of-follow-up
#7
José Francisco Gaviño Orduña, Javier Caviedes-Bucheli, María C Manzanares Céspedes, Esther Berástegui Jimeno, Benjamín Martín Biedma, Juan José Segura-Egea, José López-López
INTRODUCTION: Regenerative endodontic procedures (REP) are a promising alternative for necrotic immature teeth in adolescents and children, but very little evidence is available on this alternative in long-lasting necrotic teeth with open apices in adults. REPs are designed to replace damaged structures of the pulp-dentin complex, but no regeneration has been obtained in any of the cases described in necrotic immature permanent teeth with apical periodontitis with histologic results. The results are limited to periapical tissue repair with increasing root length, thickening of the root walls, and apical closure in young patients...
June 26, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28657463/transplantation-of-human-dental-pulp-derived-stem-cells-hdpscs-or-differentiated-neuronal-cells-from-hdpscs-identically-enhances-regeneration-of-the-injured-peripheral-nerve
#8
Imran Ullah, Ju-Mi Park, Young-Hoon Kang, June-Ho Byun, Dae-Geon Kim, Joo-Heon Kim, Gyu-Jin Rho, Bong-Wook Park
Human dental mesenchymal stem cells isolated from the dental follicle, pulp and root apical papilla of extracted wisdom teeth have been known to exhibit successful and potent neurogenic differentiation capacity. In particular, human dental pulp-derived stem cells (hDPSCs) stand out as the most prominent source for in vitro neuronal differentiation. In the present study, to evaluate the in vivo peripheral nerve regeneration potential of hDPSCs and differentiated neuronal cells from DPSCs (DF-DPSCs), a total of 1 × 10<sup>6</sup> hDPSCs or DF-hDPSCs labeled with PKH26 tracking dye and supplemented with fibrin glue scaffold and collagen tubulization were transplanted into the sciatic-nerve resection (5-mm gap) of rat models...
June 28, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28653139/spreading-proliferation-and-differentiation-of-human-dental-pulp-stem-cells-on-chitosan-scaffolds-immobilized-with-rgd-or-fibronectin
#9
Farzin Asghari Sana, Merve Çapkın Yurtsever, Gökçe Kaynak Bayrak, Ekin Özge Tunçay, Arlin S Kiremitçi, Menemşe Gümüşderelioğlu
Nowadays, human dental pulp stem cells (hDPSCs) became more attractive for therapeutic purposes because of their high proliferation and differentiation potential. Thus, coupling the desired cellular characteristics of hDPSCs with good biomaterial properties of the chitosan scaffolds provide an interesting approach for tissue engineering applications. On the other hand, scaffold surface modification is also needed to promote stem cell adhesion since chitosan lacks adhesion motifs to support direct cell anchorage...
June 26, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28649171/injectable-scaffolds-preparation-and-application-in-dental-and-craniofacial-regeneration
#10
Bei Chang, Neelam Ahuja, Chi Ma, Xiaohua Liu
Injectable scaffolds are appealing for tissue regeneration because they offer many advantages over pre-formed scaffolds. This article provides a comprehensive review of the injectable scaffolds currently being investigated for dental and craniofacial tissue regeneration. First, we provide an overview of injectable scaffolding materials, including natural, synthetic, and composite biomaterials. Next, we discuss a variety of characteristic parameters and gelation mechanisms of the injectable scaffolds. The advanced injectable scaffolding systems developed in recent years are then illustrated...
January 2017: Materials Science & Engineering. R, Reports: a Review Journal
https://www.readbyqxmd.com/read/28636235/stem-cell-based-tooth-and-periodontal-regeneration
#11
Lei Hu, Yi Liu, Songlin Wang
Currently regeneration of tooth and periodontal damage still remains great challenge. Stem cell-based tissue engineering raised novel therapeutic strategies for tooth and periodontal repair. Stem cells for tooth and periodontal regeneration include dental pulp stem cells (DPSCs), periodontal ligament stem cells (PDLSCs), stem cells from the dental apical papilla (SCAPs), and stem cells from human exfoliated deciduous teeth (SHEDs), dental follicle stem cells (DFSCs), dental epithelial stem cells (DESCs), bone marrow mesenchymal stem cells (BMMSCs), adipose-derived stem cells (ADSCs), embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs)...
June 21, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28631418/the-effects-of-biodentine-polycaprolactone-3d-scaffold-with-odontogenesis-properties-on-human-dental-pulp-cells
#12
C-C Ho, H-Y Fang, B Wang, T-H Huang, M-Y Shie
AIM: To determine the feasibility of using three-dimensional printed Biodentine/polycaprolactone composite scaffolds for orthopaedic and dental applications. The physicochemical properties and the odontogenic differentiation of human dental pulp cells (hDPCs) were investigated. METHODOLOGY: Biodentine was well-suspended in ethanol and dropped slowly into molten polycaprolactone with vigorous stirring. The Biodentine/polycaprolactone composite scaffolds were then fabricated into controlled macropore sizes and structures using an extrusion-based three-dimensional (3D) printer...
June 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28616151/therapeutic-potential-of-dental-stem-cells
#13
REVIEW
Elna Paul Chalisserry, Seung Yun Nam, Sang Hyug Park, Sukumaran Anil
Stem cell biology has become an important field in regenerative medicine and tissue engineering therapy since the discovery and characterization of mesenchymal stem cells. Stem cell populations have also been isolated from human dental tissues, including dental pulp stem cells, stem cells from human exfoliated deciduous teeth, stem cells from apical papilla, dental follicle progenitor cells, and periodontal ligament stem cells. Dental stem cells are relatively easily obtainable and exhibit high plasticity and multipotential capabilities...
January 2017: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/28611689/monitoring-notch-signaling-associated-activation-of-stem-cell-niches-within-injured-dental-pulp
#14
Thimios A Mitsiadis, Javier Catón, Pierfrancesco Pagella, Giovanna Orsini, Lucia Jimenez-Rojo
Dental pulp stem/progenitor cells guarantee tooth homeostasis, repair and regeneration throughout life. The decision between renewal and differentiation of these cells is influenced by physical and molecular interactions with stromal cells and extracellular matrix molecules forming the specialized microenvironment of dental pulp stem cell niches. Here we study the activation of putative pulp niches after tooth injury through the upregulation of Notch signaling pathway. Notch1, Notch2, and Notch3 molecules were used as markers of dental pulp stem/progenitor cells...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28608628/the-role-of-microrna-143-5p-in-the-differentiation-of-dental-pulp-stem-cells-into-odontoblasts-by-targeting-runx2-via-the-opg-rankl-signaling-pathway
#15
Fu-Liang Zhan, Xin-Yang Liu, Xing-Bo Wang
This study aims to elucidate the mechanisms by which microRNA-143-5p (miR-143-5p) targets runt-related transcription factor 2 (Runx2) in the differentiation of dental pulp stem cells (DPSCs) into odontoblasts, through regulating the osteoprotegerin receptor activator of the nuclear factor-κB ligand (OPG/RANKL) signaling pathway. Following transfection, DPSCs were divided into blank, control, miR-143-5p mimics, miR-143-5p inhibitors, miR-143-5p inhibitors + siRunx2 and siRunx2 groups. Alkaline phosphatase (ALP) activity and mineralized nodules were detected using ALP kit and alizarin red staining...
June 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28607361/a-novel-strategy-to-engineer-pre-vascularized-full-length-dental-pulp-like-tissue-constructs
#16
Avathamsa Athirasala, Fernanda Lins, Anthony Tahayeri, Monica Hinds, Anthony J Smith, Christine Sedgley, Jack Ferracane, Luiz E Bertassoni
The requirement for immediate vascularization of engineered dental pulp poses a major hurdle towards successful implementation of pulp regeneration as an effective therapeutic strategy for root canal therapy, especially in adult teeth. Here, we demonstrate a novel strategy to engineer pre-vascularized, cell-laden hydrogel pulp-like tissue constructs in full-length root canals for dental pulp regeneration. We utilized gelatin methacryloyl (GelMA) hydrogels with tunable physical and mechanical properties to determine the microenvironmental conditions (microstructure, degradation, swelling and elastic modulus) that enhanced viability, spreading and proliferation of encapsulated odontoblast-like cells (OD21), and the formation of endothelial monolayers by endothelial colony forming cells (ECFCs)...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606672/three-dimensional-sphere-forming-cells-are-unique-multipotent-cell-population-in-dental-pulp-cells
#17
Sung Hee Lee, Andrew Inaba, Neha Mohindroo, Deepika Ganesh, Charlotte Ellen Martin, Nadia Chugal, Reuben H Kim, Mo K Kang, No-Hee Park, Ki-Hyuk Shin
INTRODUCTION: Mesenchymal stem cells (MSCs) are typically cultured as adherent monolayer using a conventional tissue culture technique. However, this technique incompletely reproduces an in vivo microenvironment of stem cells and results in the loss of stemness properties. Three-dimensional (3D) sphere culture is one of the most widely used 3D culture techniques that have been developed to recapitulate the in vivo microenvironment. However, the stemness and multilineage differentiation capacity of spheres derived from dental pulp stem cells (DPSCs) have not been well investigated...
June 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28595566/a-systemic-review-of-the-sources-of-adult-mesenchymal-stem-cells-and-their-suitability-in-musculoskeletal-applications
#18
Rhiannon Nancarrow-Lei, Pouya Mafi, Reza Mafi, Wasim Khan
Background: Adult mesenchymal stem cells (MSCs) were first isolated from bone marrow by Friedenstein in 1976. These cells were clonogenic, non-haematopoietic, and able to replicate extensively in vitro. The fields of regenerative medicine and tissue engineering have grown dramatically since their inception. In the decades since, MSCs have been identified from mesoderm-, endoderm- and ectoderm-derived tissues. In light of our ageing population, the need for effective cell-based therapies for tissue repair and regeneration is ever-expanding...
June 8, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28581212/glial-cell-derived-neurotrophic-factor-promotes-dental-pulp-stem-cell-migration
#19
Nan Xiao, Wei Ye Yu, Dawei Liu
Preserving the vitality of the teeth is critical in maintaining the function and esthetics of teeth during dental treatment. Dental pulp stem cells (DPSCs) are mesenchymal cells that are demonstrated to possess stem cell properties, such as self-renewal, proliferation and pluripotency. DPSCs can be obtained through non-invasive procedure from the dental pulp and become potential resources for tissue regeneration. Neurotrophic factors are known to promote survival and growth of neurons. In the present study, we examined the expression of the glial cell derived neurotrophic factor (GDNF) family ligands and receptors, and characterized the intracellular localization of them in DPSCs...
June 5, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28580523/effects-of-combined-transplantation-of-multipotent-mesenchymal-stromal-and-hemopoietic-stem-cells-on-regeneration-of-the-hemopoietic-tissue
#20
I Yu Maklakova, D Yu Grebnev
The effect of allogenic combined transplantation of placental multipotent mesenchymal stromal and hemopoietic stem cells on regeneration of the myeloid tissue and spleen after acute blood loss was studied in laboratory mice. Combined transplantation of these cells did not change the content of cytogenetically modified cells in the bone marrow under normal conditions, but reduced their levels after acute blood loss. Combined transplantation of multipotent mesenchymal stromal and hemopoietic stem cells promoted activation of erythropoiesis and granulocytopoiesis...
June 5, 2017: Bulletin of Experimental Biology and Medicine
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