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periodontal tissue engineer

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https://www.readbyqxmd.com/read/28229417/a-simplified-and-systematic-method-to-isolate-culture-and-characterize-multiple-types-of-human-dental-stem-cells-from-a-single-tooth
#1
Mohammed Bakkar, Younan Liu, Dongdong Fang, Camille Stegen, Xinyun Su, Murali Ramamoorthi, Li-Chieh Lin, Takako Kawasaki, Nicholas Makhoul, Huan Pham, Yoshinori Sumita, Simon D Tran
This chapter describes a simplified method that allows the systematic isolation of multiple types of dental stem cells such as dental pulp stem cells (DPSC), periodontal ligament stem cells (PDLSC), and stem cells of the apical papilla (SCAP) from a single tooth. Of specific interest is the modified laboratory approach to harvest/retrieve the dental pulp tissue by minimizing trauma to DPSC by continuous irrigation, reduction of frictional heat from the bur rotation, and reduction of the bur contact time with the dentin...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28214952/novel-potential-scaffold-for-periodontal-tissue-engineering
#2
Raquel Osorio, Camilo Andrés Alfonso-Rodríguez, Estrella Osorio, Antonio L Medina-Castillo, Miguel Alaminos, Manuel Toledano-Osorio, Manuel Toledano
OBJECTIVE: The objective of the study is characterization of novel calcium and zinc-loaded electrospun matrices to be used for periodontal regeneration. MATERIALS AND METHODS: A polymethylmetacrylate-based membrane was calcium or zinc loaded. Matrices were characterized morphologically by atomic force and scanning electron microscopy and mechanically probed by a nanoindenter. Biomimetic calcium phosphate precipitation on polymeric tissues was assessed. Cell viability tests were performed using oral mucosa fibroblasts...
February 18, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28208578/role-of-cortico-cancellous-heterologous-bone-in-human-periodontal-ligament-stem-cell-xeno-free-culture-studied-by-synchrotron-radiation-phase-contrast-microtomography
#3
Serena Mazzoni, Sara Mohammadi, Giuliana Tromba, Francesca Diomede, Adriano Piattelli, Oriana Trubiani, Alessandra Giuliani
This study was designed to quantitatively demonstrate via three-dimensional (3D) images, through the Synchrotron Radiation Phase-Contrast Microtomography (SR-PhC-MicroCT), the osteoinductive properties of a cortico-cancellous scaffold (Osteobiol Dual Block-DB) cultured with human Periodontal Ligament Stem Cells (hPDLSCs) in xeno-free media. In vitro cultures of hPDLSCs, obtained from alveolar crest and horizontal fibers of the periodontal ligament, were seeded onto DB scaffolds and cultured in xeno-free media for three weeks...
February 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28204808/bone-morphogenetic-protein-2-enhances-the-osteogenic-differentiation-capacity-of-mesenchymal-stromal-cells-derived-from-human-bone-marrow-and-umbilical-cord
#4
Kulisara Marupanthorn, Chairat Tantrawatpan, Pakpoom Kheolamai, Duangrat Tantikanlayaporn, Sirikul Manochantr
Mesenchymal stromal cells (MSCs) are multipotent cells that can give rise to different cell types of the mesodermal lineages. They are powerful sources for cell therapy in regenerative medicine as they can be isolated from various tissues, and can be expanded and induced to differentiate into multiple lineages. Recently, the umbilical cord has been suggested as an alternative source of MSCs. Although MSCs derived from the umbilical cord can be induced to differentiate into osteoblasts with a phenotypic similarity to that of bone marrow-derived MSCs, the differentiation ability is not consistent...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28171222/effect-of-long-term-cultivation-on-morphological-and-biological-characteristics-of-human-periodontal-ligament-stem-cells
#5
(no author information available yet)
OBJECTIVES: Recently, it was demonstrated that human periodontal ligament stem cells have great potential for tissue engineering and regenerative medicine not limited to oro-maxillofacial region. They are easily accessible and they may be expanded under in vitro conditions. In this study we assessed the effect of long-term cultivation on the selected biological and morphological properties of human periodontal ligament stem cells. METHODS: Periodontal tissues were obtained from normal impacted third molars of healthy donors (n=5; aged 18-27 years), after obtaining informed consent...
October 24, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28127326/assessment-of-surface-markers-derived-from-human-periodontal-ligament-stem-cells-an-in-vitro-study
#6
Zainab Kadkhoda, Sahar Chokami Rafiei, Bahare Azizi, Ahad Khoshzaban
OBJECTIVES: Periodontal tissue regeneration for treatment of periodontal disease has not yet been mastered in tissue engineering. Stem cells, scaffold, and growth factors are the three main basic components of tissue engineering. Periodontal ligament (PDL) contains stem cells; however, the number, potency and features of these cells have not yet been understood. This study aimed to isolate and characterize the properties of PDL stem cells. MATERIALS AND METHODS: In this experimental study, samples were isolated from the PDL of extracted teeth of five patients and then stained immunohistochemically for detection of cell surface markers...
September 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28110067/poly-glycerol-sebacate-elastomer-supports-bone-regeneration-by-its-mechanical-properties-being-closer-to-osteoid-tissue-rather-than-to-mature-bone
#7
S H Zaky, K W Lee, J Gao, A Jensen, K Verdelis, Y Wang, A J Almarza, C Sfeir
: Mechanical load influences bone structure and mass. Arguing the importance of load-transduction, we investigated the mechanisms inducing bone formation using an elastomeric substrate. We characterized Poly (glycerol sebacate) (PGS) in-vitro for its mechanical properties, compatibility with osteoprogenitor cells regarding adhesion, proliferation, differentiation under compression versus static cultures and in-vivo for the regeneration of a rabbit ulna critical size defect. The load-transducing properties of PGS were compared in-vitro to a stiffer poly lactic-co- glycolic-acid (PLA/PGA) scaffold of similar porosity and interconnectivity...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28105339/analysis-of-multiple-types-of-human-cells-subsequent-to-bioprinting-with-electrospraying-technology
#8
Yu Xin, Gang Chai, Ting Zhang, Xiangsheng Wang, Miao Qu, Andy Tan, Melia Bogari, Ming Zhu, Li Lin, Qingxi Hu, Yuanyuan Liu, Yan Zhang
The aim of the present study was to investigate bioprinting with electrospraying technology using multiple types of human cell suspensions as bio-ink, in order to lay the initial foundations for the application of the bioprinting technology in tissue engineering. In the current study, six types of human cells were selected and cultured, including human fibroblasts, human adipose-derived stem cells (hADSCs), human periodontal ligament cells (HPDLCs), adult human retinal pigment epithelial cells (ARPE-19), human umbilical vascular endothelial cells (HUVECs) and human gastric epithelial cell line (GES-1)...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28042545/comparative-in-vitro-evaluation-of-human-dental-pulp-and-follicle-stem-cell-commitment
#9
Razieh Karamzadeh, Mohamadreza Baghaban Eslaminejad, Ali Sharifi-Zarchi
OBJECTIVE: Pulp and periodontal tissues are well-known sources of mesenchymal stem cells (MSCs) that provide a promising place in tissue engineering and regenerative medicine. The molecular mechanisms underlying commitment and differentiation of dental stem cells that originate from different dental tissues are not fully understood. In this study, we have compared the expression levels of pluripotency factors along with immunological and developmentally-related markers in the culture of human dental pulp stem cells (hDPSCs), human dental follicle stem cells (hDFSCs), and human embryonic stem cells (hESCs)...
2017: Cell Journal
https://www.readbyqxmd.com/read/28018706/application-of-platelet-rich-plasma-with-stem-cells-in-bone-and-periodontal-tissue-engineering
#10
REVIEW
Gabriela Fernandes, Shuying Yang
Presently, there is a high paucity of bone grafts in the United States and worldwide. Regenerating bone is of prime concern due to the current demand of bone grafts and the increasing number of diseases causing bone loss. Autogenous bone is the present gold standard of bone regeneration. However, disadvantages like donor site morbidity and its decreased availability limit its use. Even allografts and synthetic grafting materials have their own limitations. As certain specific stem cells can be directed to differentiate into an osteoblastic lineage in the presence of growth factors (GFs), it makes stem cells the ideal agents for bone regeneration...
2016: Bone Research
https://www.readbyqxmd.com/read/27936010/new-insights-on-the-composition-and-the-structure-of-the-acellular-extrinsic-fiber-cementum-by-raman-analysis
#11
Thomas Colard, Guillaume Falgayrac, Benoit Bertrand, Stephan Naji, Olivier Devos, Clara Balsack, Yann Delannoy, Guillaume Penel
Acellular extrinsic fiber cementum is a mineralized tissue that covers the cervical half of the tooth root surface. It contains mainly extrinsic or Sharpey's fibers that run perpendicular to the root surface to anchor the tooth via the periodontal ligament. Acellular cementum is continuously and slowly produced throughout life and exhibits an alternating bright and dark pattern under light microscopy. However, although a better understanding of the structural background of acellular cementum is relevant to many fields, such as cementochronology, periodontology and tissue engineering, acellular cementum remains rarely studied and poorly understood...
2016: PloS One
https://www.readbyqxmd.com/read/27924607/fabrication-and-characterization-of-decellularized-periodontal-ligament-cell-sheet-constructs
#12
Amro Farag, Cédryck Vaquette, Dietmar W Hutmacher, P Mark Bartold, Saso Ivanovski
Decellularized tissue-engineered constructs have the potential to promote regeneration by providing a biomimetic extracellular matrix that directs tissue-specific regeneration when implanted in situ. Recently, the use of cell sheets has shown promising results in promoting periodontal regeneration. Here, we describe the fabrication of decellularized periodontal cell sheets with intact extracellular matrix structural and biological properties. Melt electro spun polycaprolactone (PCL) scaffolds are used as a carrier for the inherently fragile cell sheets, to provide support during the processes of decellularization...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27915981/molecular-cellular-and-pharmaceutical-aspects-of-autologous-grafts-for-peri-implant-hard-and-soft-tissue-defects
#13
Jiayu Lu, Yongming Hao, Wei Zhao, Chengqi Lv, Derong Zou
The lack of supporting hard and soft tissues always prevents the rehabilitation with dental implants. Among various hard and soft tissue augmentation procedures, autologous grafts have been considered to be the gold standard. Autologous mesenchymal stem cells (MSCs) from bone marrow, dental tissue and adipose tissue have been described as promising alternatives for bone regeneration in the field of dental implantation. Mucosal cells, gingival fibroblasts and dental progenitor cells (DPS) can enhance peri-implant soft tissue augmentation and regenerate periodontal tissues around dental implants...
December 1, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27890225/applications-of-mesenchymal-stem-cells-in-oral-and-craniofacial-regeneration
#14
REVIEW
Pasha Shakoori, Quanzhou Zhang, Anh D Le
The field of tissue engineering and regenerative medicine has been rapidly expanded through multidisciplinary integration of research and clinical practice in response to unmet clinical needs for reconstruction of dental, oral, and craniofacial structures. The significance of the various types of stem cells, specifically mesenchymal stem cells derived from the orofacial tissues, ranging from dental pulp stem cells to periodontal ligament stem cells to mucosa/gingiva has been thoroughly investigated and their applications in tissue regeneration are outlined in this article...
February 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/27870141/periodontal-tissue-engineering-by-nano-beta-tricalcium-phosphate-scaffold-and-fibroblast-growth-factor-2-in-one-wall-infrabony-defects-of-dogs
#15
K Ogawa, H Miyaji, A Kato, Y Kosen, T Momose, T Yoshida, E Nishida, S Miyata, S Murakami, H Takita, B Fugetsu, T Sugaya, M Kawanami
BACKGROUND AND OBJECTIVE: Nanoparticle bioceramics are being investigated for biomedical applications. We fabricated a regenerative scaffold comprising type I collagen and beta-tricalcium phosphate (β-TCP) nanoparticles. Fibroblast growth factor-2 (FGF-2) is a bioeffective signaling molecule that stimulates cell proliferation and wound healing. This study examined the effects, on bioactivity, of a nano-β-TCP/collagen scaffold loaded with FGF-2, particularly on periodontal tissue wound healing...
December 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27842561/composite-cell-sheet-for-periodontal-regeneration-crosstalk-between-different-types-of-mscs-in-cell-sheet-facilitates-complex-periodontal-like-tissue-regeneration
#16
Hao Zhang, Shiyu Liu, Bin Zhu, Qiu Xu, Yin Ding, Yan Jin
BACKGROUND: Tissue-engineering strategies based on mesenchymal stem cells (MSCs) and cell sheets have been widely used for periodontal tissue regeneration. However, given the complexity in periodontal structure, the regeneration methods using a single species of MSC could not fulfill the requirement for periodontal regeneration. METHODS: We researched the interaction between the periodontal ligament stem cells (PDLSCs) and jaw bone marrow-derived mesenchymal stem cells (JBMMSCs), and constructed a composite cell sheet comprising both of the above MSCs to regenerate complex periodontium-like structures in nude mice...
November 14, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27737353/immunohistochemical-expression-of-tgf-%C3%AE-1-and-osteonectin-in-engineered-and-ca-oh-2-repaired-human-pulp-tissues
#17
Luiz Alexandre Chisini, Marcus Cristian Muniz Conde, Jose Carlos Bernedo Alcázar, Adriana Fernandes da Silva, Jacques Eduardo Nör, Sandra Beatriz Chaves Tarquinio, Flávio Fernando Demarco
The aim of the present study was to evaluate the expression of transforming growth factor-β1 (TGF-β1) and osteonectin (ON) in pulp-like tissues developed by tissue engineering and to compare it with the expression of these proteins in pulps treated with Ca(OH)2 therapy. Tooth slices were obtained from non-carious human third molars under sterile procedures. The residual periodontal and pulp soft tissues were removed. Empty pulp spaces of the tooth slice were filled with sodium chloride particles (250-425 µm)...
October 10, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/27711028/platelet-rich-fibrin-a-boon-in-regenerative-endodontics
#18
Priyanka D Rebentish, Girish Umashetty, Harpreet Kaur, Trupthi Doizode, Mithun Kaslekar, Shouvik Chowdhury
Research into regenerative dentistry has contributed momentum to the field of molecular biology. Periapical surgery aims at removing periapical pathology to achieve complete wound healing and regeneration of bone and periodontal tissue. Regenerative endodontic procedures are widely being added to the current armamentarium of pulp therapy procedures. The regenerative potential of platelets has been deliberated. Platelet-rich fibrin (PRF) is a wonderful tissue-engineering product and has recently gained much popularity due its promising results in wound healing bone induction...
December 2016: Minerva Stomatologica
https://www.readbyqxmd.com/read/27704706/computational-design-and-engineering-of-polymeric-orthodontic-aligners
#19
S Barone, A Paoli, A V Razionale, R Savignano
Transparent and removable aligners represent an effective solution to correct various orthodontic malocclusions through minimally invasive procedures. An aligner-based treatment requires patients to sequentially wear dentition-mating shells obtained by thermoforming polymeric disks on reference dental models. An aligner is shaped introducing a geometrical mismatch with respect to the actual tooth positions to induce a loading system, which moves the target teeth toward the correct positions. The common practice is based on selecting the aligner features (material, thickness, and auxiliary elements) by only considering clinician's subjective assessments...
October 5, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27695327/fabrication-of-gelatin-methacrylate-nanohydroxyapatite-microgel-arrays-for-periodontal-tissue-regeneration
#20
Xi Chen, Shizhu Bai, Bei Li, Huan Liu, Guofeng Wu, Sha Liu, Yimin Zhao
INTRODUCTION: Periodontitis is a chronic infectious disease and is the major cause of tooth loss and other oral health issues around the world. Periodontal tissue regeneration has therefore always been the ultimate goal of dentists and researchers. Existing fabrication methods mainly focused on a top-down tissue engineering strategy in which several drawbacks remain, including low throughput and limited diffusion properties resulting from a large sample size. Gelatin methacrylate (GelMA) is a kind of photocrosslinkable and biocompatible hydrogel, with the capacities of enabling cell encapsulation and regeneration of functional tissues...
2016: International Journal of Nanomedicine
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