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https://www.readbyqxmd.com/read/29683470/in-vivo-toxicity-of-the-ribosome-inactivating-lectin-ebulin-f-in-elderly-mice
#1
Manuel Garrosa, Pilar Jiménez, Damián Córdoba-Díaz, Verónica García-Recio, Sara Gayoso, María Ángeles Rojo, Manuel J Gayoso, Tomás Girbés
Ebulin f is a ribosome-inactivating protein (RIP) present in green fruits of the dwarf elder (Sambucus ebulus L). Since dwarf elder fruits are used for food and as a medicine, we assessed the study of toxicological effects and safety of ebulin f in elderly mice, comparing these results with those reported in young animals and with other RIPs. Female Swiss mice aged 6 and 12 months of age were intraperitoneally injected with a single dose from 1.4 to 4.5 mg/kg ebulin f. Heart, stomach, intestines, lung, kidney, liver, spleen, pancreas, adrenal gland, uterus, ovary and brain were studied...
April 23, 2018: Histology and Histopathology
https://www.readbyqxmd.com/read/29683398/fractionation-of-polyphenols-from-thermomechanical-pulp-mill-process-water-by-flotation-and-membrane-integrated-process
#2
M Courbalay, M Villain-Gambier, A Klem, S Dumarcay, D Trebouet
Fractionation of phenolic compounds in thermomechanical pulp mills was performed with a coupling of a prior treatment realized by flotation and a ceramic membrane process. Two lines of membranes filtration were tested. After a common 150 kDa clarification, 1 kDa filtration was performed with or without previous 5 kDa filtration. Flotation was shown to be inevitable to retain lipophilic compounds which cause severe membrane fouling. 150 kDa permeate flux was 20% higher when process water was firstly floated and was around 260 L...
April 23, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29683248/computer-guided-chin-harvest-a-novel-approach-for-autogenous-block-harvest-from-the-mandibular-symphesis
#3
Ahmed H Osman, Mohammed Atef
BACKGROUND: The introduction of CAD/CAM technology allowed clinicians to carry out complex procedures with a high level of precision and reproducibility and minimize the risk of injury during the procedure. PURPOSE: The aim of the present study is to evaluate the efficacy of the CAD/CAM surgical guide during chin harvesting procedures in reducing the risk of neurosensory damage and patient morbidity compared with the standard technique. MATERIALS AND METHODS: About 20 cases of autogenous block chin harvest were randomly into two groups...
April 23, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29681479/full-pulpotomy-with-biodentine-in-symptomatic-young-permanent-teeth-with-carious-exposure
#4
Nessrin A Taha, Sakhaa Z Abdulkhader
INTRODUCTION: This prospective study evaluated the outcome of Biodentine (Septodont, Saint Maur des Fosses, France) pulpotomy in young permanent teeth with carious exposure. METHODS: Twenty permanent molar teeth in 14 patients with carious pulp exposure were treated with Biodentine pulpotomy. The age of the patients ranged from 9-17 years (12.3 ± 2.7 years). A preoperative pulpal and periapical diagnosis was established. After informed consent, the tooth was anesthetized, isolated via a dental dam, and disinfected with 5% sodium hypochlorite before caries excavation...
April 19, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29681055/reproducing-the-internal-and-external-anatomy-of-fossil-bones-two-new-automatic-digital-tools
#5
Antonio Profico, Stefan Schlager, Veronica Valoriani, Costantino Buzi, Marina Melchionna, Alessio Veneziano, Pasquale Raia, Jacopo Moggi-Cecchi, Giorgio Manzi
OBJECTIVES: We present two new automatic tools, developed under the R environment, to reproduce the internal and external structures of bony elements. The first method, Computer-Aided Laser Scanner Emulator (CA-LSE), provides the reconstruction of the external portions of a 3D mesh by simulating the action of a laser scanner. The second method, Automatic Segmentation Tool for 3D objects (AST-3D), performs the digital reconstruction of anatomical cavities. MATERIALS AND METHODS: We present the application of CA-LSE and AST-3D methods to different anatomical remains, highly variable in terms of shape, size and structure: a modern human skull, a malleus bone, and a Neanderthal deciduous tooth...
April 21, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29680724/human-dental-pulp-cells-express-cellular-markers-for-inflammation-and-hard-tissue-formation-in-response-to-bacterial-information
#6
Akina Sugiuchi, Yousuke Sano, Masahiro Furusawa, Shu Abe, Takashi Muramatsu
INTRODUCTION: Lipopolysaccharide (LPS) is a major component of the outer membranes of gram-negative bacteria associated with deep dental caries and pulpitis. When bacteria invade dentinal tubes and dentin is continually destroyed, tertiary dentin is formed by preexisting odontoblasts. However, the relationship between LPS and tertiary dentin formation remains unclear. We investigated whether LPS stimulation induces the formation of hard tissue in human dental pulp cells (hDPCs). METHODS: Immortalized hDPCs were cultured, and Escherichia coli-derived LPS (1 μg/mL) was incorporated into the culture medium...
April 18, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29680723/mineral-trioxide-aggregate-with-mussel-inspired-surface-nanolayers-for-stimulating-odontogenic-differentiation-of-dental-pulp-cells
#7
Ming-Gene Tu, Chia-Che Ho, Tuan-Ti Hsu, Tsui-Hsien Huang, Min-Jhen Lin, Ming-You Shie
INTRODUCTION: This research was intended to evaluate the feasibility of mineral trioxide aggregate (MTA) powder coated with polydopamine (PDA) in dental and bone tissue regeneration by investigating the hydration, physicochemical properties, and biological performance of hydrated cements. METHODS: The MTA powder was well suspended in a dopamine solution buffered at a pH of 8.5 using tris(hydroxymethyl)aminomethane buffer and vigorously stirred for 12 hours at room temperature...
April 18, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29679823/pretreatment-technologies-for-industrial-effluents-critical-review-on-bioenergy-production-and-environmental-concerns
#8
Desika Prabakar, Subha Suvetha K, Varshini T Manimudi, Thangavel Mathimani, Gopalakrishnan Kumar, Eldon R Rene, Arivalagan Pugazhendhi
The implementation of different pretreatment techniques and technologies prior to effluent discharge is a direct result of the inefficiency of several existing wastewater treatment methods. A majority of the industrial sectors have known to cause severe negative effects on the environment. The five major polluting industries are the paper and pulp mills, coal manufacturing facilities, petrochemical, textile and the pharmaceutical sectors. Pretreatment methods have been widely used in order to lower the toxicity levels of effluents and comply with environmental standards...
April 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29679712/evaluating-the-genotoxicity-of-cellulose-nanofibrils-in-a-co-culture-of-human-lung-epithelial-cells-and-monocyte-derived-macrophages
#9
Célia Ventura, Ana Filipa Lourenço, António Sousa-Uva, Paulo J T Ferreira, Maria João Silva
Cellulose nanofibrils (CNF) are manufactured nanofibres that hold impressive expectations in forest, food, pharmaceutical, and biomedical industries. CNF production and applications are leading to an increased human exposure and thereby it is of utmost importance to assess its safety to health. In this study, we screened the cytotoxic, immunotoxic and genotoxic effects of a CNF produced by TEMPO-mediated oxidation of an industrial bleached Eucalyptus globulus kraft pulp on a co-culture of lung epithelial alveolar (A549) cells and monocyte-derived macrophages (THP-1 cells)...
April 18, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29679633/influence-of-naringenin-on-the-biofilm-formation-of-streptococcus-mutans
#10
Jiaxi Yue, Hongye Yang, Siying Liu, Fangfang Song, Jingmei Guo, Cui Huang
OBJECTIVES: To evaluate the effect of naringenin on the biofilm formation of Streptococcus mutans (S. mutans), and to investigate its mechanisms of action and biological toxicity. METHODS: Minimum inhibitory concentrations, growth curves, and biofilm inhibition rates of naringenin were determined to assess its antimicrobial effect on S. mutans. The morphology of S. mutans and the structure of biofilm were observed by FESEM and CLSM. Bacterial aggregation, bacterial surface hydrophobicity, and real-time PCR for gtfB, gtfC, comD, comE, and luxS mRNA expression were assessed to preliminarily investigate the mechanisms of action...
April 18, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29679496/detection-of-bone-marrow-derived-fibrocytes-in-human-dental-pulp-repair
#11
N Yoshiba, N Edanami, A Tohma, R Takeuchi, N Ohkura, A Hosoya, Y Noiri, H Nakamura, K Yoshiba
AIM: To explore the expression profile of CD45+/pro-collagen I+ fibrocytes in intact dental pulps as well as during wound healing in adult dental pulp tissue. METHODOLOGY: A total of 16 healthy permanent teeth were obtained from young patients (18 to 25 years) undergoing orthodontic treatment. Routine pulp capping with mineral trioxide aggregate (MTA) was performed under local anaesthesia to induce a mineralized barrier at the exposed surface. Teeth were extracted from patients after 7, 14, and 35 days...
April 21, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29679008/improving-wood-properties-for-wood-utilization-through-multi-omics-integration-in-lignin-biosynthesis
#12
Jack P Wang, Megan L Matthews, Cranos M Williams, Rui Shi, Chenmin Yang, Sermsawat Tunlaya-Anukit, Hsi-Chuan Chen, Quanzi Li, Jie Liu, Chien-Yuan Lin, Punith Naik, Ying-Hsuan Sun, Philip L Loziuk, Ting-Feng Yeh, Hoon Kim, Erica Gjersing, Todd Shollenberger, Christopher M Shuford, Jina Song, Zachary Miller, Yung-Yun Huang, Charles W Edmunds, Baoguang Liu, Yi Sun, Ying-Chung Jimmy Lin, Wei Li, Hao Chen, Ilona Peszlen, Joel J Ducoste, John Ralph, Hou-Min Chang, David C Muddiman, Mark F Davis, Chris Smith, Fikret Isik, Ronald Sederoff, Vincent L Chiang
A multi-omics quantitative integrative analysis of lignin biosynthesis can advance the strategic engineering of wood for timber, pulp, and biofuels. Lignin is polymerized from three monomers (monolignols) produced by a grid-like pathway. The pathway in wood formation of Populus trichocarpa has at least 21 genes, encoding enzymes that mediate 37 reactions on 24 metabolites, leading to lignin and affecting wood properties. We perturb these 21 pathway genes and integrate transcriptomic, proteomic, fluxomic and phenomic data from 221 lines selected from ~2000 transgenics (6-month-old)...
April 20, 2018: Nature Communications
https://www.readbyqxmd.com/read/29677186/morphophysiological-changes-in-the-splenic-extracellular-matrix-of-leishmania-infantum-naturally-infected-dogs-is-associated-with-alterations-in-lymphoid-niches-and-the-cd4-t-cell-frequency-in-spleens
#13
Aurea Virginia Andrade da Silva, Fabiano Borges Figueiredo, Rodrigo Caldas Menezes, Arthur Augusto Mendes-Junior, Luisa Helena Monteiro de Miranda, Elisa Cupolillo, Renato Porrozzi, Fernanda Nazaré Morgado
The spleen is one of the main affected organs in canine visceral leishmaniasis (CVL). Disorganization of the splenic white pulp (SWP) has been associated with immunosuppression and disease progression. This study aims to assess structural and cellular changes in the splenic extracellular matrix of dogs with CVL, correlating these changes with the parasite load and clinical signs. Splenic fragments were collected from 41 naturally infected animals for parasite load quantification by quantitative PCR, histopathological analysis and immunohistochemistry for CD3+, CD4+, and CD8+ T cells; CD21+ B cells; Ki-67+, IFN-γ+, and IL-10+ cells; and the MMP-9 and ADAM-10 enzymes...
April 20, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29676980/effect-of-bleaching-gel-viscosity-on-tooth-whitening-efficacy-and-pulp-chamber-penetration-an-in-vitro-study
#14
S R Kwon, Fnu Pallavi, Y Shi, U Oyoyo, A Mohraz, Y Li
OBJECTIVES: Whitening efficacy has been related to hydrogen peroxide (HP) diffusion into tooth structure. However, little information is available relating rheological properties to whitening efficacy. The purpose was to evaluate the whitening efficacy and HP penetration level of a 10% HP gel at three different viscosities and to compare them to a strip delivery system. METHODS AND MATERIALS: Extracted molars (n=120) were randomly assigned into five groups (n=24/ group): NC_MED (negative control; median): medium viscosity gel without HP; LOW: 10% HP gel (low viscosity experimental gel, Ultradent Products Inc); MED: 10% HP gel (medium viscosity experimental gel, Ultradent); HIGH: 10% HP gel (high viscosity gel, Ultradent); and CWS: Crest 3D Whitestrips 1-Hour Express (Procter & Gamble)...
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29674832/atypical-radiographic-presentation-of-a-horizontal-mid-root-fracture-in-a-maxillary-central-incisor-tooth
#15
Amandeep Kaur, Ajay Logani, Manish Chahar
Prognosis of a horizontal mid-root fracture is favorable, primarily because the dental pulp tends to maintain its vitality and the fracture segments are completely intraalveolar. Healing usually occurs with deposition of calcified tissue. However, if the segment coronal to the fracture becomes nonvital and infected, healing occurs by interposition of granulation tissue. This report describes a case of a horizontal mid-root fracture in a right maxillary central incisor tooth, where the apical fractured segment was significantly displaced in a linear direction...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674824/effect-of-acid-etching-on-the-micro-shear-bond-strength-of-resin-composite-calcium-silicate-interface-evaluated-over-different-time-intervals-of-bond-aging
#16
Neha Sultana, Ruchika Roongta Nawal, Sarika Chaudhry, Malavika Sivakumar, Sangeeta Talwar
Introduction: With the introduction of calcium silicate materials, pulp capping procedure has been simplified due to their therapeutic pulp capping capabilities and ability to be used as a provisional bulk restorative material simultaneously. The quality of the adhesive bond between these cements and composite is of clinical significance with regard to the longevity of the final laminate restoration. Thus, this study aims to compare the in vitro microtensile bond strengths of resin composite to different calcium silicate cements versus glass ionomer cement (GIC)...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674822/evaluation-of-bioceramics-and-zirconia-reinforced-glass-ionomer-cement-in-repair-of-furcation-perforations-an-in-vitro-study
#17
Anish Kumar Lagisetti, Priyadarshini Hegde, Mithra Nidarsh Hegde
Aim: The aim and objective of this study was to evaluate and compare the sealing ability of EndoSequence BC RRM-fast set putty, Proroot mineral trioxide aggregate (MTA), and Zirconomer in the repair of furcal perforation by measuring dye leakage under stereomicroscope. Methodology: A standard access cavity was made on forty-eight extracted mandibular and maxillary first molars followed by creating a furcal perforation in the center of the pulp chamber by using No...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674820/an-in-vitro-evaluation-of-the-degree-of-pulp-tissue-dissolution-through-different-root-canal-irrigation-protocols
#18
Massimo Amato, Giuseppe Pantaleo, Dina Abtellatif, Andrea Blasi, Massimo Gagliani, Alfredo Iandolo
Aim: The aim of this study is to evaluate in vitro , using artificial lateral canals, the rate of dissolution of the pulp tissue through different protocols of canal irrigation. Materials and Methods: One hundred artificial canals provided with lateral canals have been used. Each lateral canal was filled with pulp tissue and calibrated to 0.002 mg. All canals were irrigated using five different protocols. Five groups have been used for the experiment: Group A, distilled water (control); Group B, preheated NaOCl; Group C, NaOCl heated inside the canal; Group D, NaOCl ultrasonically activated; and Group E, NaOCl heated inside the canal with ultrasonic activation...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674278/cassia-grandis-fruit-extract-reduces-the-blood-glucose-level-in-alloxan-induced-diabetic-rats
#19
Ariadna Lafourcade Prada, Jesús Rafael Rodríguez Amado, Hady Keita, Edgar Puente Zapata, Helison Carvalho, Emersom Silva Lima, Tatiane Pereira de Sousa, José Carlos Tavares Carvalho
INTRODUCTION: Cassia grandis Lf fruits are ethnobotanically used for digestive disorders, anemia, and for reducing blood glucose. However, there are no studies about the antidiabetic activity nor the oral toxicity of the plant fruit-extracts. This paper aims to evaluate the hypoglycemic effect of C. grandis fruits extract in vivo, and assess the acute oral toxicity, and sub-acute oral toxicity. The antioxidant activity and the α-glycosidase inhibitor effect were also evaluated. METHODS: The extract was obtained by maceration of the fruit pulp with 70% hydroalcoholic solution (1:2, m:v)...
April 16, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29670655/odontoblast-like-cells-differentiated-from-dental-pulp-stem-cells-retain-their-phenotype-after-subcultivation
#20
Paula A Baldión, Myriam L Velandia-Romero, Jaime E Castellanos
Odontoblasts, the main cell type in teeth pulp tissue, are not cultivable and they are responsible for the first line of response after dental restauration. Studies on dental materials cytotoxicity and odontoblast cells physiology require large quantity of homogenous cells retaining most of the phenotype characteristics. Odontoblast-like cells (OLC) were differentiated from human dental pulp stem cells using differentiation medium (containing TGF- β 1), and OLC expanded after trypsinization (EXP-21) were evaluated and compared...
2018: International Journal of Cell Biology
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