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https://www.readbyqxmd.com/read/29150130/aluminum-barrier-laminate-or-plastic-tube-as-a-dispenser-for-modeling-plastic-impression-compound-for-border-molding
#1
Jitendra J Mete, Vilas L Rajguru, Shankar P Dange
No abstract text is available yet for this article.
November 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29149836/are-there-different-kinds-of-aging
#2
Amalia Gabriela Diaconeasa
A critical analysis of the accelerated aging syndromes may explain what aging is, but also why some tissues and organs age at accelerated rates in comparison with aging rates of other tissues. Syndromes of accelerated aging are caused by mutations affecting the integrity of the genetic material. Among them, the most studied is Werner's syndrome, "adult progeria", caused by a recessive autosomal mutation with a frequency of 1 in 10 millions, which affects a helicase involved in DNA repair. In Werner syndrome, there is a loss of heterochromatin, though the stability of heterochromatin is also affected in "normal" aging...
November 16, 2017: Current Aging Science
https://www.readbyqxmd.com/read/29146355/gelatinized-wheat-starch-influences-crystallization-behaviour-and-structure-of-roll-in-shortenings-in-laminated-bakery-products
#3
Kristin D Mattice, Alejandro G Marangoni
One hydrogenated and one non-hydrogenated shortening were baked with isolated components of a croissant matrix, including crystalline wheat starch, gelatinized wheat starch, gluten, and formed gluten network. The impact of the matrix components on fat crystallization was analyzed for polymorphism using powder X-ray diffraction, solid fat content by pulsed nuclear magnetic resonance and thermal behaviour by differential scanning calorimetry. When compared to results obtained from croissants prepared with the respective shortenings, samples containing gelatinized wheat starch displayed notably similar results: polymorphic conversion, from the β' to β form over storage, and visually broader peaks in the melting endotherms indicating a greater temperature was required to completely melt all of the fat...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29144878/effect-of-preparation-designs-on-the-prognosis-of-porcelain-laminate-veneers-a-systematic-review-and-meta-analysis
#4
N Hong, H Yang, J Li, S Wu, Y Li
OBJECTIVE: To investigate the association between preparation designs and prognosis of porcelain laminate veneers (PLVs). METHODS: Electronic and manual literature searches were performed in Medline, Embase, CENTRAL, and Scopus databases for randomized controlled trials and retrospective and prospective cohort studies comparing any two of three preparation designs. The quality of the included studies was assessed using the Newcastle-Ottawa scale. Pooled hazard ratios and risk ratios were used to evaluate the difference between two preparation designs...
November 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29144395/real-time-indoor-scene-description-for-the-visually-impaired-using-autoencoder-fusion-strategies-with-visible-cameras
#5
Salim Malek, Farid Melgani, Mohamed Lamine Mekhalfi, Yakoub Bazi
This paper describes three coarse image description strategies, which are meant to promote a rough perception of surrounding objects for visually impaired individuals, with application to indoor spaces. The described algorithms operate on images (grabbed by the user, by means of a chest-mounted camera), and provide in output a list of objects that likely exist in his context across the indoor scene. In this regard, first, different colour, texture, and shape-based feature extractors are generated, followed by a feature learning step by means of AutoEncoder (AE) models...
November 16, 2017: Sensors
https://www.readbyqxmd.com/read/29142250/loss-of-lamin-b1-is-a-biomarker-to-quantify-cellular-senescence-in-photoaged-skin
#6
Audrey Shimei Wang, Peh Fern Ong, Alexandre Chojnowski, Carlos Clavel, Oliver Dreesen
Skin ageing is an inevitable consequence of life and accelerated by exposure to ultraviolet (UV) rays. Senescence is an irreversible growth arrest and senescent cells accumulate in ageing tissues, at sites of age-related pathologies and in pre-neoplastic lesions. Conventionally, senescent cells have been detected by senescence associated-β-galactosidase (SA-β-gal) staining, a procedure that requires enzymatic activity, which is lost in fixed tissue samples. We previously demonstrated that loss of lamin B1 is a novel marker to identify senescent cells...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142071/chromatin-histone-modifications-and-rigidity-affect-nuclear-morphology-independent-of-lamins
#7
Andrew D Stephens, Patrick Z Liu, Edward J Banigan, Luay M Almassalha, Vadim Backman, Stephen A Adam, Robert D Goldman, John F Marko
Nuclear shape and architecture influence gene localization, mechanotransduction, transcription, and cell function. Abnormal nuclear morphology and protrusions termed "blebs" are diagnostic markers for many human afflictions including heart disease, aging, progeria, and cancer. Nuclear blebs are associated with both lamin and chromatin alterations. A number of prior studies suggest that lamins dictate nuclear morphology, but the contributions of altered chromatin compaction remain unclear. We show that chromatin histone modification state dictates nuclear rigidity, and modulating it is sufficient to both induce and suppress nuclear blebs...
November 15, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29139137/potential-exposure-and-cancer-risk-from-formaldehyde-emissions-from-installed-chinese-manufactured-laminate-flooring
#8
Patrick Sheehan, Ankur Singhal, Kenneth T Bogen, David MacIntosh, Renee M Kalmes, John McCarthy
Lumber Liquidators (LL) Chinese-manufactured laminate flooring (CLF) has been installed in >400,000 U.S. homes over the last decade. To characterize potential associated formaldehyde exposures and cancer risks, chamber emissions data were collected from 399 new LL CLF, and from LL CLF installed in 899 homes in which measured aggregate indoor formaldehyde concentrations exceeded 100 μg/m(3) from a total of 17,867 homes screened. Data from both sources were combined to characterize LL CLF flooring-associated formaldehyde emissions from new boards and installed boards...
November 15, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29138656/-hyperthyroidism-in-children-at-the-university-hospital-in-dakar-senegal
#9
Djibril Boiro, Demba Diédhiou, Babacar Niang, Djiby Sow, Mandiaye Mbodj, Anna Sarr, Aliou Abdoulaye Ndongo, Aliou Thiongane, Modou Guèye, Lamine Thiam, Ndiogou Seck, Yaay Joor Dieng, Abou Ba, Idrissa Demba Ba, Ibrahima Mané Diallo, Ousmane Ndiaye, Said Nourou Diop
Introduction: Hyperthyroidism in children is rare and constitutes a problem because of its psychosomatic impact. This study aimed to present an overview of the state of knowledge on these aspects in children from Dakar. Methods: We conducted a multicenter, descriptive study over a period of 15 years. We evaluated the epidemiological, clinical and etiologic aspects of hyperthyroidism in children. Results: 239 patients were included in the study with a prevalence of 2...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29138282/trajectory-analysis-unveils-reelin-s-role-in-the-directed-migration-of-granule-cells-in-the-dentate-gyrus
#10
Shaobo Wang, Bianka Brunne, Shanting Zhao, Xuejun Chai, Jiawei Li, Jeremie Lau, Antonio Virgilio Failla, Bernd Zobiak, Mirjam Sibbe, Gary L Westbrook, David Lutz, Michael Frotscher
Reelin controls neuronal migration and layer formation. Previous studies in reeler mice deficient in Reelin focused on the result of the developmental process in fixed tissue sections. It has remained unclear whether Reelin affects the migratory process, migration directionality or migrating neurons guided by the radial glial scaffold. Moreover, Reelin has been regarded as an attractive signal, since newly generated neurons migrate toward the Reelin-containing marginal zone. Conversely, Reelin might be a stop signal, since migrating neurons in reeler, but not in wild-type mice, invade the marginal zone...
November 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29135301/microbialite-biosignature-analysis-by-mesoscale-x-ray-fluorescence-%C3%AE-xrf-mapping
#11
Michael M Tice, Kimbra Quezergue, Michael C Pope
As part of its biosignature detection package, the Mars 2020 rover will carry PIXL, the Planetary Instrument for X-ray Lithochemistry, a spatially resolved X-ray fluorescence (μXRF) spectrometer. Understanding the types of biosignatures detectable by μXRF and the rock types μXRF is most effective at analyzing is therefore an important goal in preparation for in situ Mars 2020 science and sample selection. We tested mesoscale chemical mapping for biosignature interpretation in microbialites. In particular, we used μXRF to identify spatial distributions and associations between various elements ("fluorescence microfacies") to infer the physical, biological, and chemical processes that produced the observed compositional distributions...
November 2017: Astrobiology
https://www.readbyqxmd.com/read/29134302/nuclear-organization-during-in-vitro-differentiation-of-porcine-mesenchymal-stem-cells-mscs-into-adipocytes
#12
Joanna Stachecka, Agnieszka Walczak, Beata Kociucka, Błażej Ruszczycki, Grzegorz Wilczyński, Izabela Szczerbal
Differentiation of progenitor cells into adipocytes is accompanied by remarkable changes in cell morphology, cytoskeletal organization, and gene expression profile. Mature adipocytes are filled with a large lipid droplet and the nucleus tends to move to the cell periphery. It was hypothesized that the differentiation process is also associated with changes of nuclear organization. The aim of this study was to determine the number and distribution of selected components of nuclear architecture during porcine in vitro adipogenesis...
November 13, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29134249/early-siv-and-hiv-infection-promotes-the-lilrb2-mhc-i-inhibitory-axis-in-cdcs
#13
Lamine Alaoui, Gustavo Palomino, Sandy Zurawski, Gerard Zurawski, Sixtine Coindre, Nathalie Dereuddre-Bosquet, Camille Lecuroux, Cecile Goujard, Bruno Vaslin, Christine Bourgeois, Pierre Roques, Roger Le Grand, Olivier Lambotte, Benoit Favier
Classical dendritic cells (cDCs) play a pivotal role in the early events that tip the immune response toward persistence or viral control. In vitro studies indicate that HIV infection induces the dysregulation of cDCs through binding of the LILRB2 inhibitory receptor to its MHC-I ligands and the strength of this interaction was proposed to drive disease progression. However, the dynamics of the LILRB2/MHC-I inhibitory axis in cDCs during early immune responses against HIV are yet unknown. Here, we show that early HIV-1 infection induces a strong and simultaneous increase of LILRB2 and MHC-I expression on the surface of blood cDCs...
November 13, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29129844/spatial-restriction-within-intracranial-epidermoid-cysts-observed-using-short-diffusion-time-diffusion-weighted-imaging
#14
Christina Andica, Masaaki Hori, Kouhei Kamiya, Saori Koshino, Akifumi Hagiwara, Koji Kamagata, Issei Fukunaga, Nozomi Hamasaki, Michimasa Suzuki, Thorsten Feiweier, Katsutoshi Murata, Atsushi Arakawa, Kondo Akihide, Osamu Akiyama, Shigeki Aoki
We report two cases of pathologically proven intracranial epidermoid cysts. Both cases were scanned with diffusion-weighted imaging using pulsed gradient spin-echo (PGSE) and oscillating gradient spin-echo (OGSE; 50 Hz) prototype sequences with diffusion times of 47.3 ms and 8.5 ms, respectively. The apparent diffusion coefficient measured by OGSE was higher than that measured by PGSE, indicating the spatial restriction of water diffusion in the laminated keratin layers within the cyst as demonstrated by histopathology...
November 13, 2017: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29128844/a-biodegradable-scaffold-enhances-differentiation-of-embryonic-stem-cells-into-a-thick-sheet-of-retinal-cells
#15
Deepti Singh, Shao-Bin Wang, Tina Xia, Laurel Tainsh, Maryam Ghiassi-Nejad, Tao Xu, Shaomin Peng, Ron A Adelman, Lawrence J Rizzolo
Retinal degeneration is a leading cause of blindness in developed countries. Stem cells can be differentiated into retinal organoids to study mechanisms of retinal degeneration, develop therapeutic agents, and potentially serve as replacement tissues. The spherical nature of these retinoids limits their utility, because the investigator lacks ready access to both sides of the neo-tissue. For tissue-replacement, spherical retinoids are unable to interact simultaneously with the host retinal pigment epithelium and remaining neurosensory retina...
October 31, 2017: Biomaterials
https://www.readbyqxmd.com/read/29127216/emerging-candidate-treatment-strategies-for-hutchinson-gilford-progeria-syndrome
#16
REVIEW
Charlotte Strandgren, Gwladys Revêchon, Agustín Sola Carvajal, Maria Eriksson
Hutchinson-Gilford progeria syndrome (HGPS, progeria) is an extremely rare premature aging disorder affecting children, with a disease incidence of ∼1 in 18 million individuals. HGPS is usually caused by a de novo point mutation in exon 11 of the LMNA gene (c.1824C>T, p.G608G), resulting in the increased usage of a cryptic splice site and production of a truncated unprocessed lamin A protein named progerin. Since the genetic cause for HGPS was published in 2003, numerous potential treatment options have rapidly emerged...
November 10, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/29124937/an-implantable-transparent-conductive-film-with-water-resistance-and-ultra-bendability-for-electronic-devices
#17
Youngjun Song, Sejung Kim, Michael J Heller
Recently, instead of indium tin oxide (ITO), the random mesh pattern of metallic nanowires for flexible transparent conducting electrodes (FTCEs) has received a great amount of interest due to its flexibility, low resistance, reasonable price and compliant processes. Mostly, nanowires for FTCEs are fabricated by spray or mayer coating methods. However, the metallic nanowires layer of FTCEs, which is fabricated by these methods, has spiked surface roughness and low junction contact between the nanowires that leads to their high sheet resistance value...
November 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29120467/electrophoretic-cytometry-of-adherent-cells
#18
Elaine J Su, Amy E Herr
Cell-matrix and cell-cell interactions influence intracellular signalling and play an important role in physiologic and pathologic processes. Detachment of cells from the surrounding microenvironment alters intracellular signalling. Here, we demonstrate and characterise an integrated microfluidic device to culture single and clustered cells in tuneable microenvironments and then directly analyse the lysate of each cell in situ, thereby eliminating the need to detach cells prior to analysis. First, we utilise microcontact printing to pattern cells in confined geometries...
November 9, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29120398/bamboo-polylactic-acid-pla-composite-material-for-structural-applications
#19
Angel Pozo Morales, Alfredo Güemes, Antonio Fernandez-Lopez, Veronica Carcelen Valero, Sonia De La Rosa Llano
Developing an eco-friendly industry based on green materials, sustainable technologies, and optimum processes with low environmental impact is a general societal goal, but this remains a considerable challenge to achieve. Despite the large number of research on green structural composites, limited investigation into the most appropriate manufacturing methodology to develop a structural material at industrial level has taken place. Laboratory panels have been manufactured with different natural fibers but the methodologies and values obtained could not be extrapolated at industrial level...
November 9, 2017: Materials
https://www.readbyqxmd.com/read/29119531/the-non-operative-management-of-asymptomatic-liver-hydatids-ending-echinococcophobia
#20
Farrokh Saidi, Farrokh Habibzadeh
BACKGROUND: Cystic echinococcosis is common in many countries and involves the liver in 75% of cases. The current belief is that all incidentally discovered asymptomatic liver hydatids must be subjected to some types of interventional treatments pre-emptively for fear of some presumably impending complications. We conducted this study to assess the prognosis of patients with liver hydatids without any surgical interventions. Furthermore, we tried to predict the outcome of the cyst using two radiological signs...
November 8, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
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