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https://www.readbyqxmd.com/read/27912821/clinical-and-molecular-perspectives-of-reparative-dentin-formation-lessons-learned-from-pulp-capping-materials-and-the-emerging-roles-of-calcium
#1
REVIEW
Minju Song, Bo Yu, Sol Kim, Marc Hayashi, Colby Smith, Suhjin Sohn, Euiseong Kim, James Lim, Richard G Stevenson, Reuben H Kim
The long-term use of calcium hydroxide and the recent increase in the use of hydraulic calcium-silicate cements as direct pulp-capping materials provide important clues in terms of how reparative dentin may be induced to form a "biological seal" to protect the underlying pulp tissues. In this review article, we discuss clinical and molecular perspectives of reparative dentin formation based on evidence learned from the use of these pulp-capping materials. We also discuss the emerging role of calcium as an odontoinductive component in these pulp-capping materials...
January 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/27912814/biological-molecules-for-the-regeneration-of-the-pulp-dentin-complex
#2
REVIEW
Sahng G Kim
Regenerative endodontic treatment has yielded excellent clinical outcomes, but only several animal studies have shown the robust regeneration of the pulp-dentin complex. The biological molecules, if properly delivered, can enkindle regeneration of dental pulp and dentin rather than repair with tissues of periodontal origin. This review details the biological significance of regenerating the pulp-dentin complex, the effects of biological cues in pulp regeneration, and the delivery strategies of biological molecules to enhance the outcomes of regenerative endodontic therapy...
January 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/27900666/improved-production-of-thermostable-cellulase-from-thermoascus-aurantiacus-rckk-by-fermentation-bioprocessing-and-its-application-in-the-hydrolysis-of-office-waste-paper-algal-pulp-and-biologically-treated-wheat-straw
#3
Kavish Kumar Jain, Sandeep Kumar, Deepa Deswal, Ramesh Chander Kuhad
Thermostable cellulases have wide variety of applications and distinctive advantages, but their low titer becomes the hurdle in their commercialization. In the present work, an assessment of optimum levels of significant factors (temperature, moisture ratio, inoculum size, and ammonium sulfate) and the effect of their interactions on production of thermostable CMCase, FPase, and β-glucosidase by Thermoascus aurantiacus RCKK under solid-state fermentation (SSF) was carried out using central composite design (CCD) of response surface methodology (RSM)...
November 30, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27898727/biological-markers-for-pulpal-inflammation-a-systematic-review
#4
Dan-Krister Rechenberg, Johnah C Galicia, Ove A Peters
BACKGROUND AND OBJECTIVE: Pulpitis is mainly caused by an opportunistic infection of the pulp space with commensal oral microorganisms. Depending on the state of inflammation, different treatment regimes are currently advocated. Predictable vital pulp therapy depends on accurate determination of the pulpal status that will allow repair to occur. The role of several players of the host response in pulpitis is well documented: cytokines, proteases, inflammatory mediators, growth factors, antimicrobial peptides and others contribute to pulpal defense mechanisms; these factors may serve as biomarkers that indicate the status of the pulp...
2016: PloS One
https://www.readbyqxmd.com/read/27861633/task-allocation-of-wasps-governed-by-common-stomach-a-model-based-on-electric-circuits
#5
Allison Hilbun, Istvan Karsai
Simple regulatory mechanisms based on the idea of the saturable 'common stomach' can control the regulation of construction behavior and colony-level responses to environmental perturbations in Metapolybia wasp societies. We mapped the different task groups to mutual inductance electrical circuits and used Kirchoff's basic voltage laws to build a model that uses master equations from physics, yet is able to provide strong predictions for this complex biological phenomenon. Similar to real colonies, independently of the initial conditions, the system shortly sets into an equilibrium, which provides optimal task allocation for a steady construction, depending on the influx of accessible water...
2016: PloS One
https://www.readbyqxmd.com/read/27857514/the-use-of-bioceramics-in-endodontics-literature-review
#6
REVIEW
Stefan Jitaru, Ioana Hodisan, Lucia Timis, Anamaria Lucian, Marius Bud
BACKGROUND AND AIM: Bioceramics are ceramic compounds obtained both in situ and in vivo, by various chemical processes. Bioceramics exhibit excellent biocompatibility due to their similarity with biological materials, like hydroxyapatite. Bioceramics and multi-substituted hydroxyapatite or similar compounds have the ability to induce a regenerative response in the organism. The aim of this paper is to make a literature review on the main bioceramic materials currently used in endodontics and on their specific characteristics...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27855922/chemical-characterization-and-protective-effect-of-the-bactris-setosa-mart-fruit-against-oxidative-nitrosative-stress
#7
Joana Schuelter Boeing, Daniela Ribeiro, Renan Campos Chisté, Jesuí Vergílio Visentainer, Vera Marisa Costa, Marisa Freitas, Eduarda Fernandes
Bactris setosa Mart. is a Brazilian tree from the palm family (Arecaceae), whose fruits are scientifically underexploited. Here, we report, for the first time, the identification and quantification of phenolic compounds and carotenoids in the pulp, seed, and peel extracts of B. setosa fruits and their in vitro biological activity. The anthocyanins cyanidin deoxyhexose hexoside and cyanidin hexoside and other phenolic compounds were detected mainly in the peel but also in the pulp extracts. All-trans-lutein was the unique carotenoid identified and quantified, and only in the peel extract...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27818690/stem-cells-of-dental-origin-current-research-trends-and-key-milestones-towards-clinical-application
#8
REVIEW
Athina Bakopoulou, Imad About
Dental Mesenchymal Stem Cells (MSCs), including Dental Pulp Stem Cells (DPSCs), Stem Cells from Human Exfoliated Deciduous teeth (SHED), and Stem Cells From Apical Papilla (SCAP), have been extensively studied using highly sophisticated in vitro and in vivo systems, yielding substantially improved understanding of their intriguing biological properties. Their capacity to reconstitute various dental and nondental tissues and the inherent angiogenic, neurogenic, and immunomodulatory properties of their secretome have been a subject of meticulous and costly research by various groups over the past decade...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27788382/dentine-pulp-tissue-engineering-in-miniature-swine-teeth-by-set-calcium-silicate-containing-bioactive-molecules
#9
Dimitrios Tziafas, Konstantinos Kodonas, Christos Gogos, Christina Tziafa, Seraphim Papadimitriou
OBJECTIVE: The present study aims to investigate whether reparative dentinogenesis could be guided at central pulpal sites or at a distance from the amputated pulp of miniature pig teeth, by using set calcium silicate-based carriers containing human recombinant bioactive molecules. DESIGN: Pulp exposures were performed in 72 permanent teeth of 4 healthy miniature swine. The teeth were capped with pre-manufactured implants of set calcium silicate-based material containing BMP-7, TGFβ1 or WnT-1, for 3 weeks...
January 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/27783693/detection-of-hcv-persistent-infections-in-the-dental-pulp-a-novel-approach-for-the-detection-of-past-and-ancient-infections
#10
Layla Gomes Siravenha, Leonardo Quintão Siravenha, Lucimar Di Paula Madeira, Aldemir B Oliveira-Filho, Luiz Fernando Almeida Machado, Rosimar Neris Martins Feitosa, Antonio Carlos Rosário Vallinoto, Marluísa de Oliveira Guimarães Ishak, Ricardo Ishak
: The dental pulp is a sterile highly vascularized tissue and has been commonly used as a biological material to detect the genome of infectious agents that reach the dental tissue. Indeed, the pulp is also used to reveal past and ancient infections in the field of paleomicrobiology. The present study aimed to detect the presence of Hepatitis C virus (HCV) in a small community (approximately 400 inhabitants) in the Amazon region of Brazil (Nossa Senhora do Perpetuo Socorro, Vizeu, Para, Brazil) and standardize a technique for the detection of the virus in the dental pulp...
2016: PloS One
https://www.readbyqxmd.com/read/27768087/delivery-of-nucleic-acids-through-embryo-microinjection-in-the-worldwide-agricultural-pest-insect-ceratitis-capitata
#11
Paolo Gabrieli, Francesca Scolari
The Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) is a pest species with extremely high agricultural relevance. This is due to its reproductive behavior: females damage the external surface of fruits and vegetables when they lay eggs and the hatched larvae feed on their pulp. Wild C. capitata populations are traditionally controlled through insecticide spraying and/or eco-friendly approaches, the most successful being the Sterile Insect Technique (SIT). The SIT relies on mass-rearing, radiation-based sterilization and field release of males that retain their capacity to mate but are not able to generate fertile progeny...
October 1, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27763970/evaluation-of-the-biocompatibility-of-new-fiber-reinforced-composite-materials-for-craniofacial-bone-reconstruction
#12
Mădălina-Anca Lazar, Horaţiu Rotaru, Ioana Bâldea, Adina B Boşca, Cristian P Berce, Cristina Prejmerean, Doina Prodan, Radu S Câmpian
This study aims to assess the biocompatibility of new advanced fiber-reinforced composites (FRC) to be used for custom-made cranial implants. Four new formulations of FRC were obtained using polymeric matrices (combinations of monomers bisphenol A glycidylmethacrylate [bis-GMA], urethane dimethacrylate [UDMA], triethylene glycol dimethacrylate [TEGDMA], hydroxyethyl methacrylate [HEMA]) and E-glass fibers (300 g/mp). Every FRC contains 65% E-glass and 35% polymeric matrix. Composition of polymeric matrices are: bis-GMA (21%), TEGDMA (14%) for FRC1; bis-GMA (21%), HEMA (14%) for FRC2; bis-GMA (3...
October 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27763527/simultaneous-saccharification-and-fermentation-of-sugar-beet-pulp-with-mixed-bacterial-cultures-for-lactic-acid-and-propylene-glycol-production
#13
Joanna Berlowska, Weronika Cieciura, Sebastian Borowski, Marta Dudkiewicz, Michal Binczarski, Izabela Witonska, Anna Otlewska, Dorota Kregiel
Research into fermentative production of lactic acid from agricultural by-products has recently concentrated on the direct conversion of biomass, whereby pure sugars are replaced with inexpensive feedstock in the process of lactic acid production. In our studies, for the first time, the source of carbon used is sugar beet pulp, generated as a by-product of industrial sugar production. In this paper, we focus on the simultaneous saccharification of lignocellulosic biomass and fermentation of lactic acid, using mixed cultures with complementary assimilation profiles...
October 17, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27761672/histologic-tissue-response-to-furcation-perforation-repair-using-mineral-trioxide-aggregate-or-dental-pulp-stem-cells-loaded-onto-treated-dentin-matrix-or-tricalcium-phosphate
#14
H Bakhtiar, H Mirzaei, M R Bagheri, N Fani, F Mashhadiabbas, M Baghaban Eslaminejad, D Sharifi, M H Nekoofar, Pmh Dummer
OBJECTIVES: The aim of this study is to compare the effect of treated dentine matrix (TDM) and tricalcium phosphate (TCP) scaffolds on odontogenic differentiation and mineralization of dental pulp stem cells (DPSCs) in furcation perforations created in the pulp chamber floor of premolar teeth in dogs. MATERIAL AND METHODS: DPSCs were isolated and cultured from the dental pulp of the maxillary left second and third premolars of dogs. The DPSCs were loaded on TCP (SC+TCP) and TDM (SC+TDM) scaffolds and inserted into intentionally perforated pulp chamber floors of premolars in dogs; six teeth were used for each group...
October 20, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27734382/cell-biological-assays-for-measuring-odontogenic-activities-of-ccn-proteins
#15
Koichiro Muromachi, Hiroshi Sugiya, Nobuyuki Tani-Ishii
In postnatal dentin formation, odontoblast differentiation occurs in the pulp tissue regenerative process under pathological condition. Odontoblasts and newly differentiated odontoblast-like cells beneath the caries lesion form tertiary dentin and are highly odontogenic. To observe the activity of dentinogenesis occur within the hard tissue, a combination of immunohistological analysis and immunodetection of dentinogenesis specific molecules, such as dentin sialophosphoprotein (DSPP) and/or its cleaved products dentin sialoprotein (DSP) and dentin phosphoprotein (DPP), is a reliable approach...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27725267/regulatory-roles-of-micrornas-in-human-dental-tissues
#16
Amer Sehic, Amela Tulek, Cuong Khuu, Minou Nirvani, Lars Peter Sand, Tor Paaske Utheim
MicroRNAs (miRNAs) are a class of small, non-coding RNAs that provide an efficient pathway for regulation of gene expression at a post-transcriptional level. Tooth development is regulated by a complex network of cell-cell signaling during all steps of organogenesis. Most of the congenital dental defects in humans are caused by mutations in genes involved in developmental regulatory networks. Whereas the developmental morphological stages of the tooth development already are thoroughly documented, the implicated genetic network is still under investigation...
October 7, 2016: Gene
https://www.readbyqxmd.com/read/27720980/biological-valorization-of-low-molecular-weight-lignin
#17
Omar Y Abdelaziz, Daniel P Brink, Jens Prothmann, Krithika Ravi, Mingzhe Sun, Javier García-Hidalgo, Margareta Sandahl, Christian P Hulteberg, Charlotta Turner, Gunnar Lidén, Marie F Gorwa-Grauslund
Lignin is a major component of lignocellulosic biomass and as such, it is processed in enormous amounts in the pulp and paper industry worldwide. In such industry it mainly serves the purpose of a fuel to provide process steam and electricity, and to a minor extent to provide low grade heat for external purposes. Also from other biorefinery concepts, including 2nd generation ethanol, increasing amounts of lignin will be generated. Other uses for lignin - apart from fuel production - are of increasing interest not least in these new biorefinery concepts...
October 6, 2016: Biotechnology Advances
https://www.readbyqxmd.com/read/27719710/-study-on-the-influence-of-wnt3a-on-osteogenetic-differentiation-ability-of-dental-pulp-stem-cells-induced-by-mineralizing-medium
#18
Y Y Sun, M T Yuan, X Shi, M Y Liu, W P Hu
Objective: To investigate the effects of Wnt3a protein on proliferation and osteogenic differentiation of human dental pulp stem cells(DPSC). Methods: Intact human permanent teeth extracted for orthodontic reasons were collected and used as study models. The biological effects of Wnt3a on DPSC were investigated using methyl thiazolyl tetrazolium(MTT), alkaline phosphatase(ALP) activity assay, alizarin red S staining and realtime fluorescence quantitative PCR. Osteogenic-related gene expression of induced DPSC was examinedby using tests of bone sialoprotein(BSP), osteocalcin(OCN), collagen type Ⅰ (COL-Ⅰ) and Runt-related transcription factor 2(RUNX-2)...
October 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27711028/platelet-rich-fibrin-a-boon-in-regenerative-endodontics
#19
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/27665968/gene-expression-changes-in-bioceramic-paste-treated-human-dental-pulp-cells
#20
Deniz Torun, Zeynep Ö Torun, Kadriye Demirkaya, Meral Sarper, Mualla P Elçi, Ferit Avcu
We evaluated the gene expression profiles of human dental pulp cells exposed to iRoot BP using microarray after 24 and 72 h. The results were verified using quantitative reverse transcriptase PCR analysis. Of the 36,000 transcripts arrayed, 21 were up-regulated and 15 were down-regulated by more than two fold. The largest group of up-regulated genes included those involved in nucleobase-containing compound metabolic processes, cell communication, protein metabolic processes, developmental processes, and biological regulation...
2016: Journal of Oral Science
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