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https://www.readbyqxmd.com/read/29330706/color-stability-of-different-composite-resins-after-polishing
#1
Stefano Ardu, O Duc, E Di Bella, I Krejci
The goals of the present study were to evaluate, in vitro, the staining of different composite resins submitted to different common beverages, and to compare the staining effect of each of these solutions. A total of 288 specimens were randomly divided into six groups and immersed for 4 weeks in five staining solutions represented by red wine, orange juice, coke, tea and coffee or in artificial saliva as a control group. When analyzed over a black background, mean ΔE00 values varied from 0.8 for Venus Diamond, Saremco Microhybrid and ELS in saliva and Estelite Posterior in coke to 37...
January 12, 2018: Odontology
https://www.readbyqxmd.com/read/29314141/local-immune-response-to-larvae-of%C3%A2-rhipicephalus-microplus%C3%A2-in-santa-gertrudis-cattle-immune-response-against-rhipicephalus-microplus
#2
Constantin Constantinoiu, Ala Lew-Tabor, Louise Jackson, Wayne Jorgensen, Emily Piper, David Mayer, Linda Johnson, Bronwyn Venus, Nicholas Jonsson
AIMS: This study investigated the local immune response at larval attachment sites in Santa Gertrudis cattle with low and high levels of tick resistance. METHODS AND RESULTS: Skin samples with tick larvae attached were collected from Santa Gertrudis cattle at the end of a period of 25 weekly infestations, when the animals manifested highly divergent tick-resistant phenotypes. There was a tendency for more CD3+ , CD4+ , CD8+ , CD25+ , γδ T-cells and neutrophils to concentrate at larval tick attachment site in susceptible cattle than in resistant cattle but the differences were significant only for γδ T-cells and CD4+ cells...
January 4, 2018: Parasite Immunology
https://www.readbyqxmd.com/read/29313968/cochrane-systematic-review-and-meta-analysis-of-the-impact-of-psychological-treatments-for-people-with-epilepsy-on-health-related-quality-of-life
#3
REVIEW
Rosa Michaelis, Venus Tang, Janelle L Wagner, Avani C Modi, W Curt LaFrance, Laura H Goldstein, Tobias Lundgren, Markus Reuber
OBJECTIVE: Given the significant impact epilepsy can have on health-related quality of life (HRQoL) of individuals with this condition and their families, there is great clinical interest in evidence-based psychological treatments aimed at enhancing well-being in people with epilepsy (PWE). An evaluation of the current evidence is needed to assess the effects of psychological treatments for PWE on HRQoL outcomes to inform future therapeutic recommendations and research designs. METHODS: The operational definition of psychological treatments included a broad range of interventions that use psychological or behavioral techniques designed to improve HRQoL, psychiatric comorbidities, and seizure frequency and severity for adults and children with epilepsy...
January 3, 2018: Epilepsia
https://www.readbyqxmd.com/read/29302199/cell-to-cell-transmission-of-polyglutamine-aggregates-in-c-elegans
#4
Dong-Kyu Kim, Kyu-Won Cho, Woo Jung Ahn, Dayana Perez-Acuña, Hyunsu Jeong, He-Jin Lee, Seung-Jae Lee
Huntington disease (HD) is an inherited neurodegenerative disorder characterized by motor and cognitive dysfunction caused by expansion of polyglutamine (polyQ) repeat in exon 1 of huntingtin (HTT). In patients, the number of glutamine residues in polyQ tracts are over 35, and it is correlated with age of onset, severity, and disease progression. Expansion of polyQ increases the propensity for HTT protein aggregation, process known to be implicated in neurodegeneration. These pathological aggregates can be transmitted from neuron to another neuron, and this process may explain the pathological spreading of polyQ aggregates...
December 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/29286614/tp53-gene-pro72arg-rs1042522-single-nucleotide-polymorphism-as-not-a-risk-factor-for-colorectal-cancer-in-the-iranian-azari-population
#5
Milad Asadi, Dariush Shanehbandi, Armin Zarintan, Negar Pedram, Behzad Baradaran, Venus Zafari, Masoud Shirmohamadi, Shahriyar Hashemzadeh
Background: The p53 protein participates critically in several cellular functions such as cell growth and DNA repair. Polymorphisms in the TP53 locus have repeatedly been implicated in the pathogenesis of cancers all over the world. Over 200 single nucleotide polymorphisms (SNPs) have been characterized, but one well-known example at at codon 72, Pro72Arg (rs1042522), has the displayed inconsistent results with regard to cancer risk. Herein, we aimed to evaluate whether Pro72Arg (rs1042522) single nucleotide polymorphism (SNP) in TP53 gene might be associated with risk of colorectal cancer in the Iranian Azari population...
December 29, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29250576/repair-bond-strength-of-nanohybrid-composite-resins-with-a-universal-adhesive
#6
Pinar Altinci, Murat Mutluay, Arzu Tezvergil-Mutluay
Objective: To investigate the repair bond strength of fresh and aged nanohybrid and hybrid composite resins using a universal adhesive (UA). Materials and methods: Fresh and aged substrates were prepared using two nanohybrid (Venus Pearl, Heraus Kulzer; Filtek Supreme XTE, 3 M ESPE) and one hybrid (Z100, 3 M ESPE) composite resin, and randomly assigned to different surface treatments: (1) no treatment (control), (2) surface roughening with 320-grit (SR), (3) SR + UA (iBOND, Heraus Kulzer), (4) SR + Silane (Signum, Ceramic Bond I, Heraeus Kulzer) + UA, (5) SR + Sandblasting (CoJet, 3 M ESPE) + Silane + UA...
2018: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/29243187/bonding-performance-of-self-adhesive-flowable-composites-to-enamel-dentin-and-a-nano-hybrid-composite
#7
Jana Peterson, Marta Rizk, Monika Hoch, Annette Wiegand
This study aimed to analyze bond strengths of self-adhesive flowable composites on enamel, dentin and nano-hybrid composite. Enamel, dentin and nano-hybrid composite (Venus Diamond, Heraeus Kulzer, Germany) specimens were prepared. Three self-adhesive composites (Constic, DMG, Germany; Fusio Liquid Dentin, Pentron Clinical, USA; Vertise Flow, Kerr Dental, Italy) or a conventional flowable composite (Venus Diamond Flow, Heraeus Kulzer, Germany, etch&rinse technique) were applied to enamel and dentin. Nano-hybrid composite specimens were initially aged by thermal cycling (5000 cycles, 5-55 °C)...
December 14, 2017: Odontology
https://www.readbyqxmd.com/read/29236942/anaesthetics-stop-diverse-plant-organ-movements-affect-endocytic-vesicle-recycling-and-ros-homeostasis-and-block-action-potentials-in-venus-flytraps
#8
K Yokawa, T Kagenishi, A Pavlovic, S Gall, M Weiland, S Mancuso, F Baluška
Background and Aims: Anaesthesia for medical purposes was introduced in the 19th century. However, the physiological mode of anaesthetic drug actions on the nervous system remains unclear. One of the remaining questions is how these different compounds, with no structural similarities and even chemically inert elements such as the noble gas xenon, act as anaesthetic agents inducing loss of consciousness. The main goal here was to determine if anaesthetics affect the same or similar processes in plants as in animals and humans...
December 11, 2017: Annals of Botany
https://www.readbyqxmd.com/read/29224790/increased-expression-of-semaphorin-3a-in-the-endothelin-receptor-b-null-mouse-model-of-hirschsprung-disease
#9
Naho Fujiwara, Katsumi Miyahara, Nana Nakazawa-Tanaka, Chihiro Akazawa, Atsuyuki Yamataka
PURPOSE: Semaphorins are guidance cues for developing neurons, implicated in the determination of the migratory pathway of neural crest-derived neural precursors during enteric nervous system development. Recently, it has been reported that Semaphorin 3A (SEMA3A) expression is up-regulated in the aganglionic colon in Hirschsprung disease (HD) patients, suggesting that increased SEMA3A expression may be a risk factor for HD. Thus, the aim of our study was to determine the expression of SEMA3A using Sox10-Venus mice gut...
November 14, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29224090/men-are-from-mars-women-are-from-venus-sex-differences-in-insulin-action-and-secretion
#10
Ananda Basu, Simmi Dube, Rita Basu
Sex difference plays a substantial role in the regulation of glucose metabolism in healthy glucose-tolerant humans. The factors which may contribute to the sex-related differences in glucose metabolism include differences in lifestyle (diet and exercise), sex hormones, and body composition. Several epidemiological and observational studies have noted that impaired glucose tolerance is more common in women than men. Some of these studies have attributed this to differences in body composition, while others have attributed impaired insulin sensitivity as a cause of impaired glucose tolerance in women...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29204165/throwing-the-dart-blind-folded-comparison-of-computed-tomography-versus-magnetic-resonance-imaging-guided-brachytherapy-for-cervical-cancer-with-regard-to-dose-received-by-the-actual-targets-and-organs-at-risk
#11
Winnie Wing Ling Yip, Joyce Siu Yu Wong, Venus Wan Yan Lee, Frank Chi Sing Wong, Stewart Yuk Tung
Purpose: Computed tomography (CT) is inferior to magnetic resonance imaging (MRI) in cervical tumor delineation, but similar in identification of organs at risk (OAR). The trend to over-estimate high-risk and low-risk clinical target volume (HRCTV, IRCTV) on CT can lead to under-estimation of dose received by 90% (D90) of the 'actual' CTV. This study aims to evaluate whether CT-guided planning delivers adequate dose to the 'actual' targets while spares the OAR similarly. Material and methods: MRI-guided high-dose-rate image-guided brachytherapy (IGBT) was performed in 11 patients...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29190818/role-of-cis-trans-proline-isomerization-in-the-function-of-pathogenic-enterobacterial-periplasmic-binding-proteins
#12
Paulina Cortes-Hernandez, Lenin Domínguez-Ramírez
Periplasmic Binding Proteins (PBPs) trap nutrients for their internalization into bacteria by ABC transporters. Ligand binding triggers PBP closure by bringing its two domains together like a Venus flytrap. The atomic determinants that control PBP opening and closure for nutrient capture and release are not known, although it is proposed that opening and ligand release occur while in contact with the ABC transporter for concurrent substrate translocation. In this paper we evaluated the effect of the isomerization of a conserved proline, located near the binding site, on the propensity of PBPs to open and close...
2017: PloS One
https://www.readbyqxmd.com/read/29183915/yeast-hog1-proteins-are-sequestered-in-stress-granules-under-high-temperature-stress
#13
Kosuke Shiraishi, Takahiro Hioki, Akari Habata, Hiroya Yurimoto, Yasuyoshi Sakai
The yeast high-osmolarity glycerol (HOG) pathway plays a central role in stress responses. It is activated by various stress stimuli including hyperosmotic stress, oxidative stress, high-temperature stress, and arsenite. Hog1, the critical MAP kinase of the pathway, localizes to the nucleus in response to high-osmolarity conditions, but otherwise little is known about its intracellular dynamics and regulation. Using the methylotrophic yeast Candida boidinii, we found that CbHog1-Venus formed intracellular dot structures after high-temperature stress, in a reversible manner...
November 28, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/29181970/catalyst-controlled-structural-divergence-selective-intramolecular-7-endo-dig-and-6-exo-dig-post-ugi-cyclization-for-the-synthesis-of-benzoxazepinones-and-benzoxazinones
#14
Karandeep Singh, Bhanwar Kumar Malviya, Tapta Kanchan Roy, Venus Singh Mithu, Vimal K Bhardwaj, Ved Prakash Verma, Swapandeep Singh Chimni, Siddharth Sharma
Metal catalyzed post-Ugi cyclization of bis-amides is reported in this study. Exposure of bis-amides to Pd(II) catalyst triggered the formation of seven-membered benzoxazepinones. This investigation established that changing the catalyst to a Echavarren's gold(I) turned off cyclization to seven member ring and turned on 6-exo-dig annulations to afford family of six-membered benzoxazinones. To support the proposed mechanisms, quantum chemical based density functional theory calculations has been performed and validated...
November 28, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29180479/influence-of-residual-force-enhancement-and-elongation-of-attached-cross-bridges-on-stretch-shortening-cycle-in-skinned-muscle-fibers
#15
Atsuki Fukutani, Venus Joumaa, Walter Herzog
Increased muscle force during stretch-shortening cycles (SSCs) has been widely examined. However, the mechanisms causing increased muscle force in SSCs remain unknown. The purpose of this study was to determine the influence of residual force enhancement and elongation of attached cross-bridges on the work enhancement in SSCs. For the Control condition, skinned rabbit soleus fibers were elongated passively from an average sarcomere length of 2.4 to 3.0 μm, activated and then actively shortened to 2.4 μm...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29178709/determination-of-polymerization-shrinkage-of-different-composites-using-a-photoelastic-method
#16
Inga Rullman, Michael Patyna, Bram Janssen, Brita Willershausen
PURPOSE: To investigate the polymerization shrinkage stress of different low viscous bulk composites (SDR, Venus Bulk Fill, X-tra Base, Filtek Bulk Fill) in comparison to a conventional flowable composite (Filtek Supreme XTE Flow) and to high viscous bulk and conventional composites (Filtek Supreme XTE, GrandioSO, Tetric EvoCeram, Tetric EvoCeram BulkFill, Venus Diamond, Venus Pearl), as well as to an experimental composite (Ormocer) and a sonic-activated bulk fill composite (Sonicfill), by means of photoelastic investigation...
February 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29156673/induction-of-dise-in-ovarian-cancer-cells-in-vivo
#17
Andrea E Murmann, Kaylin M McMahon, Ashley Haluck-Kangas, Nandini Ravindran, Monal Patel, Calvin Y Law, Sonia Brockway, Jian-Jun Wei, C Shad Thaxton, Marcus E Peter
The death receptor CD95/Fas can be activated by immune cells to kill cancer cells. shRNAs and siRNAs derived from CD95 or CD95 ligand (CD95L) are highly toxic to most cancer cells. We recently found that these sh/siRNAs kill cancer cells in the absence of the target by targeting the 3'UTRs of critical survival genes through canonical RNAi. We have named this unique form of off-target effect DISE (for death induced by survival gene elimination). DISE preferentially kills transformed cells and cancer stem cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29143225/diurnal-regulation-of-the-floral-scent-emission-by-light-and-circadian-rhythm-in-the-phalaenopsis-orchids
#18
Yu-Chen Chuang, Ming-Chi Lee, Ya-Lan Chang, Wen-Huei Chen, Hong-Hwa Chen
BACKGROUND: Phalaenopsis bellina and its closely related species, P. violacea, emit linalool, geraniol and their derivatives as the predominant monoterpenes at the full-bloom stages. Geranyl diphosphate synthase (PbGDPS) is the key enzyme that converts precursors for monoterpene biosynthesis. Besides the monoterpenes being synthesized in concert with floral development stages, we noticed that the scent emission of P. bellina and P. violacea was detected mainly in the daytime. RESULTS: The monoterpenes of P...
November 15, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29142199/sensorfret-a-standardless-approach-to-measuring-pixel-based-spectral-bleed-through-and-fret-efficiency-using-spectral-imaging
#19
Paul T Arsenovic, Carl R Mayer, Daniel E Conway
Fluorescence microscopy of FRET-based biosensors allow nanoscale interactions to be probed in living cells. This paper describes a novel approach to spectrally resolved fluorescence microscopy, termed sensorFRET, that enables quantitative measurement of FRET efficiency. This approach is an improvement on existing methods (FLIM, sRET, luxFRET, pFRET), as it does not require single fluorophore standards to be measured with every experiment and the acquisition is intensity independent, allowing the laser power to be optimized for varying levels of fluorophore expression...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29130615/in-office-bleaching-efficacy-on-stain-removal-from-cad-cam-and-direct-resin-composite-materials
#20
Amal Alharbi, Stefano Ardu, Tissiana Bortolotto, Ivo Krejci
OBJECTIVE: To evaluate the efficacy of in-office bleaching on stain removal from stained resin composite and ceramic computer-assisted design/computer-assisted manufacturing (CAD/CAM) blocks and direct resin composites. METHODS: Forty disk-shaped samples were fabricated from each of nine materials: six CAD/CAM (VITABLOCS Mark II, Paradigm MZ100, Exp Vita Hybrid Ceramic, VITA ENAMIC, Exp Kerr, and LAVA Ultimate) and three direct resin composites (Filtek Supreme, Venus Diamond, and Filtek Silorane)...
November 11, 2017: Journal of Esthetic and Restorative Dentistry
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