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https://www.readbyqxmd.com/read/28636235/stem-cell-based-tooth-and-periodontal-regeneration
#1
Lei Hu, Yi Liu, Songlin Wang
Currently regeneration of tooth and periodontal damage still remains great challenge. Stem cell-based tissue engineering raised novel therapeutic strategies for tooth and periodontal repair. Stem cells for tooth and periodontal regeneration include dental pulp stem cells (DPSCs), periodontal ligament stem cells (PDLSCs), stem cells from the dental apical papilla (SCAPs), and stem cells from human exfoliated deciduous teeth (SHEDs), dental follicle stem cells (DFSCs), dental epithelial stem cells (DESCs), bone marrow mesenchymal stem cells (BMMSCs), adipose-derived stem cells (ADSCs), embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs)...
June 21, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28629320/transcriptomic-changes-reveal-gene-networks-responding-to-the-overexpression-of-a-blueberry-dwarf-and-delayed-flowering-1-gene-in-transgenic-blueberry-plants
#2
Guo-Qing Song, Xuan Gao
BACKGROUND: Constitutive expression of the CBF/DREB1 for increasing freezing tolerance in woody plants is often associated with other phenotypic changes including dwarf plant and delayed flowering. These phenotypic changes have been observed when Arabidopsis DWARF AND DELAYED FLOWERING 1 (DDF1) was overexpressed in A. thaliana plants. To date, the DDF1 orthologues have not been studied in woody plants. The aim of this study is to investigate transcriptomic responses to the overexpression of blueberry (Vaccinium corymbosum) DDF1 (herein, VcDDF1-OX)...
June 19, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28628992/estimating-linkages-between-forest-structural-variables-and-rainfall-interception-parameters-in-semi-arid-deciduous-oak-forest-stands
#3
O Fathizadeh, S M Hosseini, A Zimmermann, R F Keim, A Darvishi Boloorani
An understanding of the relationship between canopy structure and the water balance is needed for predicting how forest structure changes affect rainfall partitioning and, consequently, water resources. The objective of this study was to predict rainfall interception (I) and canopy storage capacity (S) using canopy structure variables and to investigate how seasonal changes influence their relationship. The study was conducted in twelve 50m×50m plots in the Zagros forest in the western Iranian state of Ilam, protected forests of Dalab region...
June 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28628951/cranial-indicators-identified-for-peak-incidence-of-otitis-media
#4
Anthony Pagano, Eugene Wang, Derek Yuan, Daniel Fischer, Charles Bluestone, Samuel Marquez, Jeffrey Laitman
Acute otitis media (AOM) is one of the most common pediatric conditions worldwide. Peak age of occurrence for AOM has been identified within the first postnatal year and it remains frequent until approximately six postnatal years. Morphological differences between adults and infants in the cartilaginous Eustachian tube (CET) and associated structures may be responsible for development of this disease yet few have investigated normal growth trajectories. We tested hypotheses on coincidence of skeletal growth changes and known ages of peak AOM occurrence...
June 19, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28626923/comparative-performance-of-deciduous-and-permanent-dental-morphology-in-detecting-biological-relatives
#5
Kathleen S Paul, Christopher M Stojanowski
OBJECTIVES: Dental morphology plays a key role in reconstructing population history and evolutionary relationships at global, regional, and intracemetery scales. At the inter-individual level, it is assumed that close biological kin exhibit greater phenotypic similarity than non-relatives. Heritability estimates provide one measure of phenotypic resemblance but are not easily incorporated into analyses of archaeological samples. In this study we evaluate the assumption that relatives are more similar phenotypically than non-relatives...
June 19, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28624454/ameloblast-like-characteristics-of-human-hertwig-s-epithelial-rest-of-malassez-epithelial-rest-of-malassez-cells-via-interaction-with-stem-cells-from-human-exfoliated-deciduous-teeth
#6
Hyun Nam, Gee-Hye Kim, Jae-Won Kim, Jae Cheoun Lee, Kyunghoon Lee, Sun-Ho Lee
Tooth develops through reciprocal interactions between oral epithelium and oral mesenchyme. To regenerate tooth, both components are necessary to mimic epithelial-mesenchymal interactions. In adult teeth, Hertwig's epithelial root sheath/Epithelial rests of Malassez (HERS/ERM) cells are unique epithelial cells which are derived from oral epithelium. In this study, we investigated whether HERS/ERM cells could have ameloblast-like characteristics via interaction with stem cells from human exfoliated deciduous teeth (SHEDs) as an oral mesenchymal component...
June 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28623976/adam28-localizes-to-hla-g-trophoblasts-and-promotes-column-cell-outgrowth
#7
L C De Luca, H T Le, D L Mara, A G Beristain
INTRODUCTION: Trophoblast progenitor cell differentiation towards the extravillous trophoblast (EVT) lineage initiates within proximal regions of anchoring columns of first trimester placental villi. While molecular processes controlling the initial stages of progenitor cell differentiation along the EVT pathway have been described, much remains unknown about factors important in distal column cell differentiation into invasive EVTs. ADAMs are proteases that regulate growth factor signaling, cell-matrix adhesion, and matrix proteolysis, and thus impact many processes relevant in placentation...
July 2017: Placenta
https://www.readbyqxmd.com/read/28622534/increased-expression-of-toll-like-receptors-2-and-9-is-associated-with-reduced-dna-methylation-in-spontaneous-preterm-labor
#8
Scott W Walsh, Anuja A Chumble, Sonya L Washington, Kellie J Archer, Sinem E Sahingur, Jerome F Strauss
The cause of spontaneous preterm labor (sPTL) is not known, but it could be due to epigenetic alterations that increase the sensitivity of decidual tissue to inflammatory stimuli. We collected decidual tissue from women at term not in labor (TNL), women at term in labor (TL), and women with sPTL. Illumina Infinium HumanMethylation450 BeadChip analysis revealed significantly reduced DNA methylation for TLR-2 and TLR-9 in sPTL as compared to TL. Immunohistochemical staining documented significantly increased expression of TLR-2 and TLR-9 in decidual tissue of women with sPTL as compared to TL or TNL...
June 3, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28619974/twenty-nine-month-follow-up-of-a-paediatric-zirconia-dental-crown
#9
Serena Lopez Cazaux, Isabelle Hyon, Tony Prud'homme, Sylvie Dajean Trutaud
The aim of this paper is to present the long-term follow-up of one paediatric zirconia crown on a deciduous molar. Preformed crowns are part of the armamentarium in paediatric dentistry. In recent years, aesthetic alternatives to preformed metal crowns have been developed, first preveneered crowns and then zirconia crowns. This paper describes the restoration of a primary molar with a zirconia crown (EZ-Pedo, Loomis, California, USA) in an 8-year-old boy. In this clinical case, the protocol for the implementation and maintenance of zirconia crowns is detailed...
June 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28618048/transcriptomic-profiling-in-human-decidua-of-severe-preeclampsia-detected-by-rna-sequencing
#10
Jing Tong, Weixiu Zhao, Hong Lv, Wei-Ping Li, Zi-Jiang Chen, Cong Zhang
Maternal decidua plays a critical role in implantation and placentation. Impaired decidualization causes failed intravascular trophoblast invasion and inadequate placentation and then increases the risk of preeclampsia (PE). RNA sequencing (RNA-Seq) has achieved great advances in the characterization and quantification of transcriptomes, is a powerful tool for new transcript discovery, genome annotation and expression profiling. In the present study, we conducted a RNA-Seq analysis to compare gene expression between decidua of PE (n = 3, early-onset severe PE, EOSPE; n = 3, late-onset severe PE, LOSPE) and normal pregnancies (n = 3)...
June 15, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28616738/living-in-a-mediterranean-city-in-2050-broadleaf-or-evergreen-citizens
#11
Lorenzo Cotrozzi, Damiano Remorini, Elisa Pellegrini, Lucia Guidi, Cristina Nali, Giacomo Lorenzini, Rossano Massai, Marco Landi
The predicted effects of global change (GC) will be exacerbated in the more densely populated cities of the future, especially in the Mediterranean basin where some environmental cues, such as drought and tropospheric ozone (O3) pollution, already mine seriously plant survival. Physiological and biochemical responses of a Mediterranean, evergreen, isohydric plant species (Quercus ilex) were compared to those of a sympatric, deciduous, anisohydric species (Q. pubescens) under severe drought (20% of the effective daily evapotranspiration) and/or chronic O3 exposure (80 ppb for 5 h day(-1) for 28 consecutive days) to test which one was more successful in those highly limiting conditions...
June 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28616672/biological-effects-of-silk-fibroin-3d-scaffolds-on-stem-cells-from-human-exfoliated-deciduous-teeth-sheds
#12
M Collado-González, M P Pecci-Lloret, D García-Bernal, S Aznar-Cervantes, R E Oñate-Sánchez, J M Moraleda, J L Cenis, F J Rodríguez-Lozano
The aim is to investigate in vitro biological effects of silk fibroin 3D scaffolds on stem cells from human exfoliated deciduous teeth (SHEDs) in terms of proliferation, morphological appearance, cell viability, and expression of mesenchymal stem cell markers. Silk fibroin 3D scaffolding materials may represent promising suitable scaffolds for their application in regenerative endodontic therapy approaches. SHEDs were cultured in silk fibroin 3D scaffolds. Then, cell numbers were counted and the Alamar blue colorimetric assay was used to analyse cell proliferation after 24, 48, 72, and 168 h of culture...
June 14, 2017: Odontology
https://www.readbyqxmd.com/read/28616161/geographical-and-climatic-gradients-of-evergreen-versus-deciduous-broad-leaved-tree-species-in-subtropical-china-implications-for-the-definition-of-the-mixed-forest
#13
Jielin Ge, Zongqiang Xie
Understanding climatic influences on the proportion of evergreen versus deciduous broad-leaved tree species in forests is of crucial importance when predicting the impact of climate change on broad-leaved forests. Here, we quantified the geographical distribution of evergreen versus deciduous broad-leaved tree species in subtropical China. The Relative Importance Value index (RIV) was used to examine regional patterns in tree species dominance and was related to three key climatic variables: mean annual temperature (MAT), minimum temperature of the coldest month (MinT), and mean annual precipitation (MAP)...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28616151/therapeutic-potential-of-dental-stem-cells
#14
REVIEW
Elna Paul Chalisserry, Seung Yun Nam, Sang Hyug Park, Sukumaran Anil
Stem cell biology has become an important field in regenerative medicine and tissue engineering therapy since the discovery and characterization of mesenchymal stem cells. Stem cell populations have also been isolated from human dental tissues, including dental pulp stem cells, stem cells from human exfoliated deciduous teeth, stem cells from apical papilla, dental follicle progenitor cells, and periodontal ligament stem cells. Dental stem cells are relatively easily obtainable and exhibit high plasticity and multipotential capabilities...
January 2017: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/28612364/successful-treatment-with-placenta-derived-decidual-stromal-cells-in-a-pediatric-patient-with-life-threatening-acute-gastrointestinal-graft-versus-host-disease
#15
Britt Gustafsson, Per Frisk, Attilla Szakos, Behnam Sadeghi, Olle Ringdén, Britt-Marie Frost
Severe aGvHD is a life-threatening complication after allogeneic HSCT. The GI tract is considered to play a key role in aGvHD, where the disease process can start and is one of the major target organs. Here, we present a case of a one-year-old child with a life-threatening GI-aGvHD stage IV, post-HSCT, resistant to steroids and MMF for 4 weeks. He was successfully treated with placenta-derived DSC.
June 13, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28611818/long-term-effects-of-red-and-blue-light-emitting-diodes-on-leaf-anatomy-and-photosynthetic-efficiency-of-three-ornamental-pot-plants
#16
Liang Zheng, Marie-Christine Van Labeke
Light quality critically affects plant development and growth. Development of light-emitting diodes (LEDs) enables the use of narrow band red and/or blue wavelengths as supplementary lighting in ornamental production. Yet, long periods under these wavelengths will affect leaf morphology and physiology. Leaf anatomy, stomatal traits, and stomatal conductance, leaf hydraulic conductance (Kleaf), and photosynthetic efficiency were investigated in three ornamental pot plants, namely Cordyline australis (monocot), Ficus benjamina (dicot, evergreen leaves), and Sinningia speciosa (dicot, deciduous leaves) after 8 weeks under LED light...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611210/hb-egf-regulates-prss56-expression-during-mouse-decidualization-via-egfr-erk-egr2-signaling-pathway
#17
JIe Liu, Fei Gao, Yue-Fang Liu, Hai-Ting Dou, Jia-Qi Yan, Zong-Min Fan, Zeng-Ming Yang
Embryo implantation and decidualization are key steps for successful reproduction. Although numerous factors have been identified to be involved in embryo implantation and decidualization, the mechanisms underlying these processes are still unclear. Based on our preliminary data, Prss56, a trypsin-like serine protease, is strongly expressed at implantation site in mouse uterus. However, the expression, regulation and function of Prss56 during early pregnancy are still unknown. In mouse uterus, Prss56 is strongly expressed in the subluminal stromal cells at implantation site on day 5 of pregnancy compared to inter-implantation site...
June 13, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28611072/decoupled-leaf-and-root-carbon-economics-is-a-key-component-in-the-ecological-diversity-and-evolutionary-divergence-of-deciduous-and-evergreen-lineages-of-genus-rhododendron
#18
Juliana S Medeiros, Jean H Burns, Jaynell Nicholson, Louisa Rogers, Oscar Valverde-Barrantes
PREMISE: We explored trait-trait and trait-climate relationships for 27 Rhododendron species while accounting for phylogenetic relationships and within-species variation to investigate whether leaf and root traits are coordinated across environments and over evolutionary time, as part of a whole-plant economics spectrum. METHODS: We examined specific leaf area (SLA) and four root traits: specific root length (SRL), specific root tip abundance (SRTA), first order diameter, and link average length, for plants growing in a cold, seasonal climate (Kirtland, Ohio) and a warmer, less seasonal climate (Federal Way, Washington) in the United States...
June 13, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28610172/a-new-polytypic-species-of-yellow-shouldered-bats-genus-i-sturnira-i-mammalia-chiroptera-phyllostomidae-from-the-andean-and-coastal-mountain-systems-of-venezuela-and-colombia
#19
Jesús Molinari, Xiomar E Bustos, Santiago F Burneo, M Alejandra Camacho, S Andrea Moreno, Gustavo Fermín
Sturnira is the most speciose genus of New World leaf-nosed bats (Phyllostomidae). We name Sturnira adrianae, new species. This taxon is born polytypic, divided into a larger subspecies (S. a. adrianae) widespread in the mountains of northern and western Venezuela, and northern Colombia, and a smaller subspecies (S. a. caripana) endemic to the mountains of northeastern Venezuela. The new species inhabits evergreen, deciduous, and cloud forests at mainly medium (1000-2000 m) elevations. It has long been confused with S...
March 13, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609467/land-cover-more-than-monthly-fire-weather-drives-fire-size-distribution-in-southern-qu%C3%A3-bec-forests-implications-for-fire-risk-management
#20
Jean Marchal, Steve G Cumming, Eliot J B McIntire
Fire activity in North American forests is expected to increase substantially with climate change. This would represent a growing risk to human settlements and industrial infrastructure proximal to forests, and to the forest products industry. We modelled fire size distributions in southern Québec as functions of fire weather and land cover, thus explicitly integrating some of the biotic interactions and feedbacks in a forest-wildfire system. We found that, contrary to expectations, land-cover and not fire weather was the primary driver of fire size in our study region...
2017: PloS One
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