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https://www.readbyqxmd.com/read/28528483/fossil-record-of-ephedra-in-the-lower-cretaceous-aptian-argentina
#1
Gabriela G Puebla, Ari Iglesias, María A Gómez, Mercedes B Prámparo
Fossil plants from the Lower Cretaceous (upper Aptian) of the La Cantera Formation, Argentina, are described. The fossils studied represent a leafy shooting system with several orders of articulated and striated axes and attached leaves with unequivocal ephedroid affinity. We also found associated remains of ovulate cones with four whorls of sterile bracts, which contain two female reproductive units (FRU). Ovulate cone characters fit well within the genus Ephedra. Special characters in the ovulate cones including an outer seed envelope with two types of trichomes, allowed us to consider our remains as a new Ephedra species...
May 20, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28527412/early-stage-detection-of-ve-cadherin-during-endothelial-differentiation-of-human-mesenchymal-stem-cells-using-spr-biosensor
#2
Farzaneh Fathi, Aysa Rezabakhsh, Reza Rahbarghazi, Mohammad-Reza Rashidi
Surface plasmon resonance (SPR) biosensors are most commonly applied for real-time dynamic analysis and measurement of interactions in bio-molecular studies and cell-surface analysis without the need for labeling processes. Up to present, SPR application in stem cell biology and biomedical sciences was underused. Herein, a very simple and sensitive method was developed to evaluate human mesenchymal stem cells trans-differentiation to endothelial lineage of over a period of 14 days based on VE-cadherin biomarker...
May 10, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28523385/attention-deficit-hyperactivity-disorder-adhd-symptoms-in-children-adopted-from-poland-and-their-atypical-association-patterns-a-bayesian-approach
#3
Donna A de Maat, Sandra Knuiman, Catharina H A M Rijk, René A C Hoksbergen, Anneloes L van Baar
Although high rates of attention-deficit hyperactivity disorder (ADHD) symptoms have been observed among internationally adopted children, research on these symptoms in Polish adoptees is lacking. Therefore, we examined ADHD symptoms in Polish adoptees and their relationship to pre-adoptive risk factors, that is, time in institutional care, early deprivation, and prenatal alcohol exposure. We further compared the association patterns and gender distribution of ADHD symptoms in children adopted from Poland to those reported in the literature for ADHD symptoms in non-adopted children...
May 18, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28521202/dual-growth-factor-loaded-nonmulberry-silk-fibroin-carbon-nanofiber-composite-3d-scaffolds-for-in%C3%A2-vitro-and-in%C3%A2-vivo-bone-regeneration
#4
Deboki Naskar, Ananta K Ghosh, Mahitosh Mandal, Piyali Das, Samit K Nandi, Subhas C Kundu
In recent years the potential application of nanocomposite biomaterials in tissue engineering field is gaining importance because of the combined features of all the individual components. A bottom-up approach is acquired in this study to recreate the bone microenvironment. The regenerated silk protein fibroin obtained from nonmulberry tropical tasar Antheraea mylitta species is reinforced with functionalized carbon nano fiber (CNF) and the composite sponges are fabricated using facile green aqueous based method...
May 10, 2017: Biomaterials
https://www.readbyqxmd.com/read/28513544/morphogenetically-active-barrier-membrane-for-guided-bone-regeneration-based-on-amorphous-polyphosphate
#5
Xiaohong Wang, Maximilian Ackermann, Meik Neufurth, Shunfeng Wang, Heinz C Schröder, Werner E G Müller
We describe a novel regeneratively-active barrier membrane which consists of a durable electrospun poly(ε-caprolactone) (PCL) net covered with a morphogenetically-active biohybrid material composed of collagen and inorganic polyphosphate (polyP). The patch-like fibrous collagen structures are decorated with small amorphous polyP nanoparticles (50 nm) formed by precipitation of this energy-rich and enzyme-degradable (alkaline phosphatase) polymer in the presence of calcium ions. The fabricated PCL-polyP/collagen hybrid mats are characterized by advantageous biomechanical properties, such as enhanced flexibility and stretchability with almost unaltered tensile strength of the PCL net...
May 17, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28512423/refined-internal-limiting-membrane-inverted-flap-technique-for-intractable-macular-detachment-with-optic-disc-pit
#6
Rumiko Hara, Yasutomo Tsukahara, Tsuyoshi Simoyama, Soutarou Mori
PURPOSE: To report a surgical technique for retinal detachment associated with optic disc pit (ODP) by using an internal limiting membrane (ILM) inverted flap as an obstacle between the vitreous cavity and subretinal space. CASE PRESENTATION: A 43-year-old man presented with decreased visual acuity in the right eye for 1 week due to macular detachment associated with ODP. After 2 unsuccessful surgeries, the retina was reattached by vitrectomy with an ILM inverted flap onto the ODP...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28512248/androgen-receptor-supports-an-anchorage-independent-cancer-stem-cell-like-population-in-triple-negative-breast-cancer
#7
Valerie N Barton, Jessica L Christenson, Michael A Gordon, Lisa I Greene, Thomas J Rogers, Kiel Butterfield, Beatrice Babbs, Nicole S Spoelstra, Nicholas C D'Amato, Anthony Elias, Jennifer K Richer
Preclinical and early clinical trials indicate that up to 50% of triple-negative breast cancers (TNBC) express androgen receptor (AR) and are potentially responsive to anti-androgens. However, the function of AR in TNBC and the mechanisms by which AR-targeted therapy reduces tumor burden are largely unknown. We hypothesized that AR maintains a cancer stem cell (CSC)-like tumor initiating population and serves as an anti-apoptotic factor, facilitating anchorage independence and metastasis. AR levels increased in TNBC cells grown in forced suspension culture compared to those in attached conditions, and cells that expressed AR resisted detachment-induced apoptosis...
May 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28509878/antigenic-and-biological-characterization-of-orf2-6-variants-at-early-times-following-prrsv-infection
#8
Alyssa B Evans, Hyelee Loyd, Jenelle R Dunkelberger, Sarah van Tol, Marcus J Bolton, Karin S Dorman, Jack C M Dekkers, Susan Carpenter
Genetic diversity of porcine reproductive and respiratory syndrome virus (PRRSV) challenges efforts to develop effective and broadly acting vaccines. Although genetic variation in PRRSV has been extensively documented, the effects of this variation on virus phenotype are less well understood. In the present study, PRRSV open reading frame (ORF)2-6 variants predominant during the first six weeks following experimental infection were characterized for antigenic and replication phenotype. There was limited genetic variation during these early times after infection; however, distinct ORF2-6 haplotypes that differed from the NVSL97-7895 inoculum were identified in each of the five pigs examined...
May 16, 2017: Viruses
https://www.readbyqxmd.com/read/28508736/out-of-harm-s-way-secure-versus-insecure-disorganized-attachment-predicts-less-adolescent-risk-taking-related-to-childhood-poverty
#9
Brianna C Delker, Rosemary E Bernstein, Heidemarie K Laurent
Although some risk taking in adolescence is normative, evidence suggests that adolescents raised in conditions of socioeconomic disadvantage are disproportionately burdened with risk taking and its negative consequences. Using longitudinal data from the NICHD Study of Early Child Care and Youth Development, we investigated quality of the early caregiving environment as a potential prospective buffer against the long-term association between childhood poverty and adolescent risk taking. Multicategorical moderation model results indicated that if raised in poverty across age 1-54 months (average family income to needs ratio ≤ 1...
May 16, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28503851/characterizing-bacterial-communities-in-paper-production-troublemakers-revealed
#10
Anita Zumsteg, Simon K Urwyler, Joachim Glaubitz
Biofilm formation is a major cause of reduced paper quality and increased down time during paper manufacturing. This study uses Illumina next-generation sequencing to identify the microbial populations causing quality issues due to their presence in biofilms and slimes. The paper defects investigated contained traces of the films and/or slime of mainly two genera, Tepidimonas and Chryseobacterium. The Tepidimonas spp. found contributed on average 68% to the total bacterial population. Both genera have been described previously to be associated with biofilms in paper mills...
May 14, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28500503/expression-and-localization-of-myosin-vi-in-developing-mouse-spermatids
#11
Przemysław Zakrzewski, Robert Lenartowski, Maria Jolanta Rędowicz, Kathryn G Miller, Marta Lenartowska
Myosin VI (MVI) is a versatile actin-based motor protein that has been implicated in a variety of different cellular processes, including endo- and exocytic vesicle trafficking, Golgi morphology, and actin structure stabilization. A role for MVI in crucial actin-based processes involved in sperm maturation was demonstrated in Drosophila. Because of the prominence and importance of actin structures in mammalian spermiogenesis, we investigated whether MVI was associated with actin-mediated maturation events in mammals...
May 12, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28497401/using-a-film-intervention-in-early-addiction-treatment-a-qualitative-analysis-of-process
#12
Ingerid Elgesem Bjelland, Ayna Johansen, Farnad Darnell, Håvar Brendryen
PURPOSE: There is a need for knowledge about how self-help materials can be made useful in treatment for Substance Abuse Disorders (SUD), as a supplement to ongoing treatment, or as independent tools for change. OBJECTIVE: In this study, we explored the use of self-help films in early addiction treatment, taking into account both patient and therapist perspectives, as well as dyadic functions. We explored how active mechanisms might be related to intervention format and implementation context...
May 11, 2017: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28495415/rhinovirus-from-bench-to-bedside
#13
REVIEW
Kelvin K W To, Cyril C Y Yip, Kwok-Yung Yuen
Rhinovirus has been neglected in the past because it was generally perceived as a respiratory virus only capable of causing mild common cold. Contemporary epidemiological studies using molecular assays have shown that rhinovirus is frequently detected in adult and pediatric patients with upper or lower respiratory tract infections. Severe pulmonary and extrapulmonary complications are increasingly recognized. Contrary to popular belief, some rhinoviruses can actually replicate well at 37 °C and infect the lower airway in humans...
May 8, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28494246/catalytic-hydrodechlorination-of-triclosan-using-a-new-class-of-anion-exchange-resin-supported-palladium-catalysts
#14
Bing Han, Wen Liu, Jingwen Li, Jin Wang, Dongye Zhao, Rui Xu, Zhang Lin
We prepared a new class of anion-exchange-resin supported Pd catalysts for efficient hydrodechlorination of triclosan in water. The catalysts were prepared through an initial ion-exchange uptake of PdCl4(2-) and subsequent reduction of Pd(II) to Pd(0) nanoparticles at ambient temperature. Two standard strong-base anion exchange resins (IRA-900 and IRA-958) with different matrices (polystyrene and polyacrylic) were chosen as the supports. SEM and TEM images showed that Pd(0) nanoparticles were evenly attached on the resin surface with a mean size of 3-5 nm...
April 26, 2017: Water Research
https://www.readbyqxmd.com/read/28492359/periodontitis-and-endothelial-dysfunction-periodontal-clinical-parameters-and-the-levels-of-salivary-markers-il-1%C3%AE-tnf-%C3%AE-mmp2-timp2-complex-and-nitric-oxide
#15
Marcela Faria Moura, Túlio Pinho Navarro, Tarcília Aparecida Silva, Luís Otávio Miranda Cota, Alcione Maria Soares Dutra Oliveira, Fernando Oliveira Costa
BACKGROUND: Periodontitis has been associated with a greater risk for arteriosclerotic cardiovascular disease (ACD). Endothelial dysfunction (ED) is a parameter of early ACD, and its association with periodontitis has rarely been investigated to date. The objective of this study was to evaluate the association between periodontitis and ED by means of periodontal clinical parameters and salivary markers IL-1β, TNF-α, nitric oxide-(NO) and MMP2/TIMP2 complex. METHODS: Forty-seven individuals were divided into two groups: 24 individuals with chronic periodontitis and 23 individuals without chronic periodontitis...
May 11, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28491118/the-head-morphology-of-pyrrhosoma-nymphula-larvae-odonata-zygoptera-focusing-on-functional-aspects-of-the-mouthparts
#16
Sebastian Büsse, Thomas Hörnschemeyer, Stanislav N Gorb
BACKGROUND: The understanding of concerted movements and its underlying biomechanics is often complex and elusive. Functional principles and hypothetical functions of these complex movements can provide a solid basis for biomechanical experiments and modelling. Here a description of the cephalic anatomy of Pyrrhosoma nymphula (Zygoptera, Coenagrionidae) focusing on functional aspects of the mouthparts using micro computed tomography (μCT) is presented. RESULTS: We compared six different instars of the damselfly P...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28486915/3d-in-vitro-models-of-early-pregnancy-how-to-choose-the-right-scaffolding-material
#17
Damián Muzzio, María Lucía Foglia, Martin Federico Desimone, Marek Zygmunt
Following fertilization, the blastocyst has to complete two distinct steps to assure further development of pregnancy. After apposition it establishes a firm connection with the luminal epithelium of the endometrium (attachment) and subsequently enters the decidualizing stroma (invasion). If this step is not achieved successfully, fertility problems arise. Development of the placenta ensures an adequate supply of nutrients and gas between the mother and the fetus. Preeclampsia is a prevalent disorder arising from defects in the process of placentation...
May 8, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28482913/critical-attributes-of-human-early-mesenchymal-stromal-cell-laden-microcarrier-constructs-for-improved-chondrogenic-differentiation
#18
Youshan Melissa Lin, Jialing Lee, Jessica Fang Yan Lim, Mahesh Choolani, Jerry Kok Yen Chan, Shaul Reuveny, Steve Kah Weng Oh
BACKGROUND: Microcarrier cultures which are useful for producing large cell numbers can act as scaffolds to create stem cell-laden microcarrier constructs for cartilage tissue engineering. However, the critical attributes required to achieve efficient chondrogenic differentiation for such constructs are unknown. Therefore, this study aims to elucidate these parameters and determine whether cell attachment to microcarriers throughout differentiation improves chondrogenic outcomes across multiple microcarrier types...
May 8, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28477173/shared-epizoic-taxa-and-differences-in-diatom-community-structure-between-green-turtles-chelonia-mydas-from-distant-habitats
#19
Roksana Majewska, Bart Van de Vijver, Ali Nasrolahi, Maryam Ehsanpour, Majid Afkhami, Federico Bolaños, Franco Iamunno, Mario Santoro, Mario De Stefano
The first reports of diatoms growing on marine mammals date back to the early 1900s. However, only recently has direct evidence been provided for similar associations between diatoms and sea turtles. We present a comparison of diatom communities inhabiting carapaces of green turtles Chelonia mydas sampled at two remote sites located within the Indian (Iran) and Atlantic (Costa Rica) Ocean basins. Diatom observations and counts were carried out using scanning electron microscopy. Techniques involving critical point drying enabled observations of diatoms and other microepibionts still attached to sea turtle carapace and revealed specific aspects of the epizoic community structure...
May 6, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28476073/early-moral-conscience-the-development-of-a-moral-short-played-stories-procedure
#20
Giampaolo Nicolais, Sara Fazeli-Fariz Hendi, Camilla Modesti, Fabio Presaghi
We set up a cross-sectional study to investigate how moral core self's mental representations develop from age 3 to 6 years. An ad hoc instrument (Moral Short Played Stories Procedure; MSPSP) was developed to tap into how moral emotions, conducts, and cognitions referred to moral and nonmoral characters. A total of 143 preschoolers completed the MSPSP and moral dilemmas procedures, together with attachment and behavioral inhibition assessment. The main results confirm the hypothesis of a mild developmental trend characterized by the prominence of moral conduct over moral emotion and cognition...
May 5, 2017: Infant Mental Health Journal
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