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https://www.readbyqxmd.com/read/27888063/notch1-signalling-inhibits-apoptosis-of-human-dental-follicle-stem-cells-via-both-the-cytoplasmic-mitochondrial-pathway-and-nuclear-transcription-regulation
#1
Xuepeng Chen, Songying Li, Zhaobin Zeng, Zexu Gu, Yanfang Yu, Feifei Zheng, Yi Zhou, Huiming Wang
Dental follicle stem cells (DFSCs) have been considered as promising candidate cells for periodontal tissue regeneration. Understanding the signalling pathways underlying the apoptosis of DFSCs will facilitate its biomedical application. Here we showed that Notch1 signalling could inhibit DFSCs apoptosis because the constitutive overexpression of the intracellular domain of Notch1 (ICN1) promoted proliferation and suppressed apoptosis by inhibiting cytoplasmic mitochondrial membrane depolarization, cytochrome c release and activation of caspase-9 and caspase-3...
November 22, 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27877076/cardiomyogenic-differentiation-of-human-dental-follicle-derived-stem-cells-by-suberoylanilide-hydroxamic-acid-and-their-in-vivo-homing-property
#2
Iel-Yong Sung, Han-Na Son, Imran Ullah, Dinesh Bharti, Ju-Mi Park, Yeong-Cheol Cho, June-Ho Byun, Young-Hoon Kang, Su-Jin Sung, Jong-Woo Kim, Gyu-Jin Rho, Bong-Wook Park
The purpose of the present study was to investigate the in vitro cardiomyogenic differentiation potential of human dental follicle-derived stem cells (DFCs) under the influence of suberoylanilide hydroxamic acid (SAHA), a member of the histone deacetylase inhibitor family, and analyze the in vivo homing capacity of induced cardiomyocytes (iCMs) when transplanted systemically. DFCs from extracted wisdom teeth showed mesenchymal stem cell (MSC) characteristics such as plate adherent growing, expression of MSC markers (CD44, CD90, and CD105), and mesenchymal lineage-specific differentiation potential...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27793851/central-odontogenic-fibromyxoma-of-mandible-an-aggressive-odontogenic-pathology
#3
Sumit Bahl, Godishala Swamy Sugunakar Raju, Gunjan Shah, Parvin Chandarana
Myxoma of the jaws which was first described by Thoma and Goldman in 1947 is a rare neoplasm and its rate of prevalence and incidence is not available. Myxoma term, according to 1992 WHO classification, is used along with odontogenic myxoma (OM) and myxofibroma. There are two forms of myxomas or fibromyxomas that are recognised in head and neck region: one is derived from the facial skeleton and the other is derived from the soft tissue. Most of the OM are located intraosseously, but peripheral ones are also recognised...
October 28, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27764680/human-dental-follicle-cells-express-embryonic-mesenchymal-and-neural-stem-cells-markers
#4
Rodrigo Lopes de Lima, Rosenilde Carvalho de Holanda Afonso, Vivaldo Moura Neto, Ana Maria Bolognese, Marcos Fabio Henriques Dos Santos, Margareth Maria Gomes de Souza
OBJECTIVE: This study was conducted to identify and characterize dental follicle stem cells (DFSCs) by analyzing expression of embryonic, mesenchymal and neural stem cells surface markers. Design Dental follicle cells (DFCs) were evaluated by immunocytochemistry using embryonic stem cells markers (OCT4 and SOX2), mesenchmal stem cells (MSCs) markers (Notch1, active Notch1, STRO, CD44, HLA-ABC, CD90), neural stem cells markers (Nestin and β-III-tubulin), neural crest stem cells (NCSCs) markers (p75 and HNK1) and a glial cells marker (GFAP)...
October 8, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27761382/role-of-podoplanin-expression-in-deciding-the-invasive-potential-of-ameloblastoma-a-retrospective-ihc-study
#5
Sindhu M Ganvir, Pratima G Khobragade, Swati A Bamane, Ramnivas Kumavat, Amit Dalmia
BACKGROUND: The aim of this study was to investigate the podoplanin expression in epithelial odontogenic tumors both non-aggressive and aggressive, tumors with and without ectomesenchyme and remnants of the odontogenic epithelium from dental follicles (DF) of unerupted teeth and to examine its role in progression and invasion of tumors. METHOD: Thirty paraffin embedded specimens AM (15 were non-aggressive ameloblastomas and 15 ameloblastoma showing aggressive behavior), 15 paraffin embedded specimens of AOT, 15 paraffin embedded specimens of CEOT, 15 paraffin embedded specimens of CCOT were obtained and were analyzed by immunohistochemistry using anti-human podoplanin...
September 2016: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/27747624/evaluation-of-implant-materials-as-cell-carriers-for-dental-stem-cells-under-in-vitro-conditions
#6
Martin Gosau, Sandra Viale-Bouroncle, Hannah Eickhoff, Esthera Prateeptongkum, Anja Reck, W Götz, Christoph Klingelhöffer, Steffen Müller, Christian Morsczeck
BACKGROUND: Dental stem cells in combination with implant materials may become an alternative to autologous bone transplants. For tissue engineering different types of soft and rigid implant materials are available, but little is known about the viability and the osteogenic differentiation of dental stem cells on these different types of materials. According to previous studies we proposed that rigid bone substitute materials are superior to soft materials for dental tissue engineering...
December 2015: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27729142/distribution-of-oral-and-maxillofacial-lesions-in-pediatric-patients-from-a-brazilian-southeastern-population
#7
Aline Priscila Ataíde, Felipe Paiva Fonseca, Alan Roger Santos Silva, Jacks Jorge Júnior, Márcio Ajudarte Lopes, Pablo Agustin Vargas
OBJECTIVES: Oral lesions affecting infants account for approximately 10% of all samples from diagnostic services and studies investigating the distribution of these lesions in pediatrics from different geographic areas are desired to improve the diagnostic knowledge of clinicians. Therefore, the aim of this study is to describe the distribution of oral lesions in a southeastern Brazilian population. METHODS: The oral pathology files of the University of Campinas was retrospectively reviewed for all cases diagnosed from 2000 to 2014 affecting patients 16-years-old and younger...
November 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27688777/the-neurovascular-properties-of-dental-stem-cells-and-their-importance-in-dental-tissue-engineering
#8
REVIEW
Jessica Ratajczak, Annelies Bronckaers, Yörg Dillen, Pascal Gervois, Tim Vangansewinkel, Ronald B Driesen, Esther Wolfs, Ivo Lambrichts, Petra Hilkens
Within the field of tissue engineering, natural tissues are reconstructed by combining growth factors, stem cells, and different biomaterials to serve as a scaffold for novel tissue growth. As adequate vascularization and innervation are essential components for the viability of regenerated tissues, there is a high need for easily accessible stem cells that are capable of supporting these functions. Within the human tooth and its surrounding tissues, different stem cell populations can be distinguished, such as dental pulp stem cells, stem cells from human deciduous teeth, stem cells from the apical papilla, dental follicle stem cells, and periodontal ligament stem cells...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27658728/bone-tissue-regeneration-application-of-mesenchymal-stem-cells-and-cellular-and-molecular-mechanisms
#9
Jin Zhang, Jake Chen
The regeneration of damaged bone tissues to a pre-disease state has been a major goal for both clinicians and researchers worldwide. However, critical-sized bone defects which are unable to heal completely are a major clinical concern because effective, evidence-based regenerative therapy is still missing. Bone tissue engineering, aiming at providing novel and effective materials to promote bone regeneration, has been considered as a promising alternative to the traditional use of autografts, allografts and xenografts based on the fact that engineered bone tissue has limitless supply and has no disease transmission...
September 21, 2016: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27620521/central-odontogenic-fibroma-of-the-mandible
#10
Niharika Puppala, Jaya Kiran Madala, Ajay Reddy Mareddy, Rakesh Kumar Dumpala
The central odontogenic fibroma (COF) is a benign odontogenic tumor of mesenchymal tissue such as the periodontal ligament, dental papilla or dental follicle. It is an extremely rare tumor, accounting less than five percent of all odontogenic tumors. In this report, we describe the case of an eight year old girl who presented with a painless swelling of the left mandible. Radiographic evaluation revealed a well-defined unilocular radiolucency extending from the distal aspect of the displaced mandibular left premolar to the ascending ramus of the mandible...
2016: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/27612840/recent-advancements-in-regenerative-dentistry-a-review
#11
REVIEW
Pouya Amrollahi, Brinda Shah, Amir Seifi, Lobat Tayebi
Although human mouth benefits from remarkable mechanical properties, it is very susceptible to traumatic damages, exposure to microbial attacks, and congenital maladies. Since the human dentition plays a crucial role in mastication, phonation and esthetics, finding promising and more efficient strategies to reestablish its functionality in the event of disruption has been important. Dating back to antiquity, conventional dentistry has been offering evacuation, restoration, and replacement of the diseased dental tissue...
December 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27594561/gingiva-as-a-new-and-the-most-accessible-source-of-mesenchymal-stem-cells-from-the-oral-cavity-to-be-used-in-regenerative-therapies
#12
Bartłomiej Górski
Since the discovery of bone marrow mesenchymal stem cells (BMMSCs), many researchers have focused their attention on new sources of mesenchymal stem cells (MSCs). Consequently, MSCs that display self-renewal capacity, multidifferentiation potential and immunomodulatory properties have been isolated from human oral tissues, including tooth, periodontal ligament, and gingiva. Oral MSCs involve dental pulp stem cells (DPSCs), stem cells from exfoliated deciduous teeth (SHED), periodontal ligament stem cells (PDLSCs), dental follicle stem cells (DFCs), stem cells from apical papilla (SCAP) and gingival stem cells (GMSCs)...
2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/27543890/bisphenol-a-and-ovarian-steroidogenesis
#13
REVIEW
Michael S Bloom, Evelyn Mok-Lin, Victor Y Fujimoto
Bisphenol A is widely used as a component in polycarbonate plastics for food and beverage packaging, epoxy linings for canned foods, and dental sealants, among other applications. Experimental literature demonstrates BPA's affinity for estrogen receptors and downstream effects on estrogen-responsive genes. Additional data suggest that BPA reduces endogenous estrogen synthesis, likely by antagonizing ovarian enzyme activities involved in sex-steroid hormone synthesis. More specifically, evidence indicates BPA-mediated disruption of STAR, CYP450scc, and HSD-3β in theca cells and CYP450 aromatase activity in granulosa cells...
September 15, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27541634/mirna-101-supports-the-osteogenic-differentiation-in-human-dental-follicle-cells
#14
Christoph Klingelhöffer, Consuela Codrin, Tobias Ettl, Torsten Reichert, Christian Morsczeck
OBJECTIVE: Human dental follicle cells (DFCs) are genuine precursor cells of cementoblasts and alveolar bone osteoblasts. MicroRNAs (miRNAs) represent a class of non-coding endogenous RNAs that silence gene expression post-transcriptionally. miRNA101 actively regulates the osteogenic differentiation of periodontal ligament cells. Therefore the aim of this study was to investigate the role of miRNA101 during the osteogenic differentiation in DFCs. MATERIALS AND METHODS: DFCs were isolated, cultivated and osteogenic differentiated in differentiation medium...
August 11, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27538550/histopathological-evaluation-of-dental-follicles-of-clinically-symptomatic-and-asymptomatic-impacted-third-molars
#15
A Esen, K Isik, S Findik, D Suren
BACKGROUND AND AIMS: Surgical removal of impacted teeth is a common operation in oral surgery. Thus, pathological potential of impacted third molars is extensively studied. However, many of those studies based on data collected from analysis of radiographs only. The purpose of this retrospective study was to compare the follicles of symptomatic and asymptomatic impacted third molars histopathologically for a number of characteristics. MATERIALS AND METHODS: Records of the patients who had been previously operated for impacted third molars were reviewed...
September 2016: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/27526461/-research-progress-on-the-cellular-and-molecular-mechanisms-of-tooth-eruption
#16
Huang Shiyan, Rao Nanquan, Xu Shuhao, Li Xiaobing
Tooth eruption is a series of complicated physiological processes occurring once the crown is formed completely, as well as when the tooth moves toward the occasion plane. As such, the tooth moves through the alveolar bone and the oral mucosa until it finally reaches its functional position. Most studies indicate that the process of tooth eruption involves the alveolar bone, dental follicles, osteoclasts, osteoblasts, and multiple cytokines. Dental follicles regulate both resorption and formation of the alveolar bone, which is required for tooth eruption...
June 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/27516012/the-evaluation-of-ki67-p53-mcm3-and-pcna-immunoexpressions-at-the-level-of-the-dental-follicle-of-impacted-teeth-dentigerous-cysts-and-keratocystic-odontogenic-tumors
#17
Adina Simona Coşarcă, Simona Liliana Mocan, Mariana Păcurar, Emőke Fülöp, Alina Ormenişan
UNLABELLED: The aim of this study is to analyze the immunoexpression of Ki67, p53, MCM3 and PCNA markers in epithelial remnants of dental follicles of impacted teeth and to identify a possible correlation between the immunoexpression of these markers in dentigerous cysts and keratocystic odontogenic tumors in order to evaluate their evolutionary behavior. MATERIALS AND METHODS: A total of 102 cases were included in the study and divided into three subgroups: the first subgroup consisted of 62 cases with dental follicles of impacted teeth, the second included 20 cases of dentigerous cysts and the third subgroup comprised a number of 20 cases with keratocystic odontogenic tumors...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27509906/runx2-mutation-impairs-bone-remodelling-of-dental-follicle-cells-and-periodontal-ligament-cells-in-patients-with-cleidocranial-dysplasia
#18
Xiangyu Sun, Xiaozhe Wang, Chenying Zhang, Yang Liu, Xiang Yang, Wenjuan Yan, Zhongning Liu, Yixiang Wang, Shuguo Zheng
RUNX2 is an important osteo-specific factor with crucial functions in bone formation and remodelling as well as resorption of teeth. Heterozygous mutation of RUNX2 can cause cleidocranial dysplasia (CCD), a systemic disease with extensive skeletal dysplasia and abnormality of tooth growth. In our study, dental follicle cells (DFCs) and periodontal ligament cells (PDLCs) were isolated, cultured and identified from one patient with CCD and compared with normal controls. This CCD patient was confirmed to have a heterozygous frameshift mutation of RUNX2 (c...
November 2016: Mutagenesis
https://www.readbyqxmd.com/read/27484316/proteomic-analysis-of-the-effects-of-csf-1-and-il-1%C3%AE-on-dental-follicle-cells
#19
Chanchan Chen, Nan Xie, Junqi Ling, Yu Du, Haijing Gu
Tooth eruption is a complex physiological process involving both osteogenesis and bone resorption. Signals from the dental follicle (DF) regulate bone remodeling during tooth eruption. Interleukin-1α (IL-1α) may be the initial promoter of tooth eruption, whereas colony‑stimulating factor‑1 (CSF‑1) may attract monocytes into the DF and stimulate osteoclast differentiation. In the present study, differential proteomics was employed to explore protein changes in rat DF cells (DFCs) under the effects of CSF‑1 and IL‑1α...
September 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27450807/p38-map-kinase-is-required-for-wnt3a-mediated-osterix-expression-independently-of-wnt-lrp5-6-gsk3%C3%AE-signaling-axis-in-dental-follicle-cells
#20
Yukihiko Sakisaka, Sousuke Kanaya, Takashi Nakamura, Masato Tamura, Hidetoshi Shimauchi, Eiji Nemoto
Wnt3a is a secreted glycoprotein that activates the glycogen synthase kinase-3β (GSK3β)/β-catenin signaling pathway through low-density-lipoprotein receptor-related protein (LRP)5/6 co-receptors. Wnt3a has been implicated in periodontal development and homeostasis, as well as in cementum formation. Recently, we have reported that Wnt3a increases alkaline phosphatase expression through the induction of osterix (Osx) expression in dental follicle cells, a precursor of cementoblasts. However, the molecular mechanism by which Wnt3a induces Osx expression is still unknown...
September 16, 2016: Biochemical and Biophysical Research Communications
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