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https://www.readbyqxmd.com/read/28108836/smad-dependent-signaling-plays-a-detrimental-role-in-a-fly-model-of-smarcb1-deficiency-and-the-biology-of-atypical-teratoid-rhabdoid-tumors
#1
Astrid Jeibmann, Jacqueline Schulz, Kristin Eikmeier, Pascal D Johann, Katharina Thiel, Isabel Tegeder, Oliver Ambrée, Michael C Frühwald, Stefan M Pfister, Marcel Kool, Werner Paulus, Martin Hasselblatt
Atypical teratoid/rhabdoid tumors (ATRT) are highly malignant brain tumors arising in young children. The majority of ATRT is characterized by inactivation of the chromatin remodeling complex member SMARCB1 (INI1/hSNF5). Little is known, however, on downstream pathways involved in the detrimental effects of SMARCB1 deficiency which might also represent targets for treatment. Using Drosophila melanogaster and the Gal4-UAS system, modifier screens were performed in order to identify the role of SMAD dependent signaling in the lethal phenotype associated with knockdown of snr1, the fly homolog of SMARCB1...
January 20, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28106705/repair-of-orbital-floor-fracture-with-modified-transnasal-endoscopic-approach-through-anterior-space-to-nasolacrimal-duct
#2
Motohiko Suzuki, Yoshihisa Nakamura, Shinya Ozaki, Makoto Yokota, Shingo Murakami
OBJECTIVES: Endoscopic approach provides excellent magnification and visualization, and a purely transnasal approach is minimally invasive method. However, it is very difficult to repair anterior and lateral fractures with the previous transnasal endoscopic approaches, since repair of orbital fractures is managed through the middle meatus and ostium from the posterior side of the nasolacrimal duct with side-viewing endoscope and curved instruments. Therefore, the authors used modified transnasal endoscopic approach as an alternative for repair of orbital floor fractures in order to effectively reach the lateral or anterior fracture of the orbital floor with straight endoscope and instruments endoscopically...
January 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28104921/effects-of-gold-nanoparticles-on-lipid-packing-and-membrane-pore-formation
#3
Anupama Bhat, Lance W Edwards, Xiao Fu, Dillon L Badman, Samuel Huo, Albert J Jin, Qi Lu
Gold nanoparticles (AuNPs) have been increasingly integrated in biological systems, making it imperative to understand their interactions with cell membranes, the first barriers to be crossed to enter cells. Herein, liposomes composed of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) as a model membrane system were treated with citrate stabilized AuNPs from 5 to 30 nm at various concentrations. The fluorescence shifts of Laurdan probes reveal that AuNPs in general made liposomes more fluidic. The increased fluidity is expected to result in an increased surface area, and thus liposome shape changes from circular to less circular, which was further confirmed with fluorescence microscopy...
December 26, 2016: Applied Physics Letters
https://www.readbyqxmd.com/read/28099449/the-use-of-functional-data-analysis-to-evaluate-activity-in-a-spontaneous-model-of-degenerative-joint-disease-associated-pain-in-cats
#4
Margaret E Gruen, Marcela Alfaro-Córdoba, Andrea E Thomson, Alicia C Worth, Ana-Maria Staicu, B Duncan X Lascelles
INTRODUCTION AND OBJECTIVES: Accelerometry is used as an objective measure of physical activity in humans and veterinary species. In cats, one important use of accelerometry is in the study of therapeutics designed to treat degenerative joint disease (DJD) associated pain, where it serves as the most widely applied objective outcome measure. These analyses have commonly used summary measures, calculating the mean activity per-minute over days and comparing between treatment periods. While this technique has been effective, information about the pattern of activity in cats is lost...
2017: PloS One
https://www.readbyqxmd.com/read/28098201/fiber-laser-based-ultrasound-sensor-for-photoacoustic-imaging
#5
Yizhi Liang, Long Jin, Lidai Wang, Xue Bai, Linghao Cheng, Bai-Ou Guan
Photoacoustic imaging, especially for intravascular and endoscopic applications, requires ultrasound probes with miniature size and high sensitivity. In this paper, we present a new photoacoustic sensor based on a small-sized fiber laser. Incident ultrasound waves exert pressures on the optical fiber laser and induce harmonic vibrations of the fiber, which is detected by the frequency shift of the beating signal between the two orthogonal polarization modes in the fiber laser. This ultrasound sensor presents a noise-equivalent pressure of 40 Pa over a 50-MHz bandwidth...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28095923/nadph-oxidase-in-brain-injury-and-neurodegenerative-disorders
#6
REVIEW
Merry W Ma, Jing Wang, Quanguang Zhang, Ruimin Wang, Krishnan M Dhandapani, Ratna K Vadlamudi, Darrell W Brann
Oxidative stress is a common denominator in the pathology of neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, and multiple sclerosis, as well as in ischemic and traumatic brain injury. The brain is highly vulnerable to oxidative damage due to its high metabolic demand. However, therapies attempting to scavenge free radicals have shown little success. By shifting the focus to inhibit the generation of damaging free radicals, recent studies have identified NADPH oxidase as a major contributor to disease pathology...
January 17, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28093302/aging-and-risky-decision-making-new-erp-evidence-from-the-iowa-gambling-task
#7
Elisa Di Rosa, Daniela Mapelli, Giorgio Arcara, Piero Amodio, Stefano Tamburin, Sami Schiff
Several pieces of evidence have highlighted the presence of an age-related decline in risky decision-making (DM), but the reason of this decline is still unclear. The aim of the present study was to investigate the neural correlates of feedback processing in risky DM. Twenty-one younger (age <50 years) and 15 older (age >50 years) adults were tested with the Iowa Gambling Task (IGT) during Event Related Potentials (ERP) recording. The analysis was focused on the feedback-related negativity (FRN) and P3, two ERP components that represent different stages of feedback processing...
January 13, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28087916/-a-case-of-idiopathic-hypertrophic-cranial-pachymeningitis-presenting-as-chronic-subdural-hematoma
#8
Zhan He, Fang Ding, Jiandong Rong, Yongli Gan
A 26-year-old male presented with a 6-day history of paroxysmal headache which was worsen with nausea and vomiting for 1 day. Head CT on admission revealed left chronic subdural hematoma with midline shift. An emergency Burr hole drainage for hematoma was performed. Headache recurred 6 days later. MRI of the brain revealed a diffuse thickening and a gadolinium-enhancement of the falx, cranial dura mater and tentorium cerebelli on the left side with pia mater involved. Lumber puncture showed increased intracranial pressure and elevated IgG level in cerebrospinal fluid...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28078418/absolute-quantification-of-myosin-heavy-chain-isoforms-by-selected-reaction-monitoring-can-underscore-skeletal-muscle-changes-in-a-mouse-model-of-amyotrophic-lateral-sclerosis
#9
Caterina Peggion, Maria Lina Massimino, Giancarlo Biancotto, Roberto Angeletti, Carlo Reggiani, Maria Catia Sorgato, Alessandro Bertoli, Roberto Stella
Skeletal muscle fibers contain different isoforms of myosin heavy chain (MyHC) that define distinctive contractile properties. In light of the muscle capacity to adapt MyHC expression to pathophysiological conditions, a rapid and quantitative assessment of MyHC isoforms in small muscle tissue quantities would represent a valuable diagnostic tool for (neuro)muscular diseases. As past protocols did not meet these requirements, in the present study we applied a targeted proteomic approach based on selected reaction monitoring that allowed the absolute quantification of slow and fast MyHC isoforms in different mouse skeletal muscles with high reproducibility...
January 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28074924/metabotyping-patients-journeys-reveals-early-predisposition-to-lung-injury-after-cardiac-surgery
#10
Raluca Georgiana Maltesen, Bodil Steen Rasmussen, Shona Pedersen, Munsoor Ali Hanifa, Sergey Kucheryavskiy, Søren Risom Kristensen, Reinhard Wimmer
Cardiovascular disease is the leading cause of death worldwide and patients with severe symptoms undergo cardiac surgery. Even after uncomplicated surgeries, some patients experience postoperative complications such as lung injury. We hypothesized that the procedure elicits metabolic activity that can be related to the disease progression, which is commonly observed two-three days postoperatively. More than 700 blood samples were collected from 50 patients at nine time points pre-, intra-, and postoperatively...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070778/the-failure-to-increase-social-support-it-just-might-be-time-to-stop-intervening-and-start-rigorously-observing
#11
Amanda L Graham, George D Papandonatos, Kang Zhao
In 1986, Lichtenstein et al. (Behav Ther. 17(5):607-19, 1986) presented the results of five studies focused on enhancing social support for smoking cessation in community-based clinic and worksite interventions. The manuscript was titled Social Support in Smoking Cessation: In Search of Effective Interventions and its main conclusion was that "attempts to both increase social support and to enhance treatment effectiveness have not been successful." Thirty years later, the paper by Cutrona et al. (Transl Behav Med...
January 9, 2017: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/28070677/potential-activity-of-subglacial-microbiota-transported-to-anoxic-river-delta-sediments
#12
Karen A Cameron, Marek Stibal, Nikoline S Olsen, Andreas B Mikkelsen, Bo Elberling, Carsten S Jacobsen
The Watson River drains a portion of the SW Greenland ice sheet, transporting microbial communities from subglacial environments to a delta at the head of Søndre Strømfjord. This study investigates the potential activity and community shifts of glacial microbiota deposited and buried under layers of sediments within the river delta. A long-term (12-month) incubation experiment was established using Watson River delta sediment under anaerobic conditions, with and without CO2/H2 enrichment. Within CO2/H2-amended incubations, sulphate depletion and a shift in the microbial community to a 52% predominance of Desulfosporosinus meridiei by day 371 provides evidence for sulphate reduction...
January 9, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28070302/are-life-history-events-of-a-northern-breeding-population-of-cooper-s-hawks-influenced-by-changing-climate
#13
Robert N Rosenfield, Madeline G Hardin, John Bielefeldt, Edward R Keyel
Numerous studies have demonstrated earlier timing of spring migration and egg-laying in small passerines, but documentation of such responses to recent climate change in the life histories of higher trophic feeding birds such as raptors is relatively scarce. Raptors may be particularly susceptible to possible adverse effects of climate change due to their longer generation turnover times and lower reproductive capacity, which could lead to population declines because of an inability to match reproductive timing with optimal brood rearing conditions...
January 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28069533/myrteae-phylogeny-calibration-biogeography-and-diversification-patterns-increased-understanding-in-the-most-species-rich-tribe-of-myrtaceae
#14
Thais N C Vasconcelos, Carol E B Proença, Berhaman Ahmad, Daniel S Aguilar, Reinaldo Aguilar, Bruno S Amorim, Keron Campbell, Itayguara R Costa, Plauto S De-Carvalho, Jair E Q Faria, Augusto Giaretta, Pepijn W Kooij, Duane F Lima, Fiorella F Mazine, Brigido Peguero, Gerhard Prenner, Matheus F Santos, Julia Soewarto, Astrid Wingler, Eve J Lucas
Myrteae (c. 2500 species; 51 genera) is the largest tribe of Myrtaceae and an ecologically important groups of angiosperms in the Neotropics. Systematic relationships in Myrteae are complex, hindering conservation initiatives and jeopardizing evolutionary modelling. A well-supported and robust phylogenetic hypothesis was here targeted towards a comprehensive understanding of the relationships within the tribe. The resultant topology was used as a base for key evolutionary analyses such as age estimation, historical biogeography and diversification rate patterns...
January 6, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28068654/primary-retinal-detachment-surgery-changes-in-treatment-and-outcome-in-an-austrian-tertiary-eye-center
#15
Eva Smretschnig, Christiane Isolde Falkner-Radler, Jessica Spörl, Danijel Kivaranovic, Susanne Binder, Katharina Krepler
PURPOSE: The surgery of choice for primary retinal detachment (RD) has shifted towards primary vitrectomy (PPV) in recent years. In this study, 2 cohorts of consecutive patients, treated by 8 retinal surgeons within a 7-year time span were compared. METHODS: Baseline demographic data, surgical procedure, and outcome of patients with primary RD surgery between January 2007 and December 2008 (group 1, G1) and January 2012 and December 2013 (group 2, G2) were compared...
January 10, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28067393/longitudinal-assessment-of-metal-concentrations-and-copper-isotope-ratios-in-the-g93a-sod1-mouse-model-of-amyotrophic-lateral-sclerosis
#16
T Gabriel Enge, Heath Ecroyd, Dianne F Jolley, Justin J Yerbury, Anthony Dosseto
Amyotrophic lateral sclerosis (ALS) is a motor neuron disease, which involves progressive motor neuron degeneration in the central nervous system (CNS). The G93A SOD1 mouse model simulates one of the most common causes of familial ALS through the overexpression of a mutated form of the human gene encoding copper/zinc superoxide dismutase (SOD1). Transition metals, particularly Cu and Zn, have been shown to behave abnormally in the disease context and have been hypothesized to contribute to and potentially trigger the disease...
January 9, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28065817/reproducibility-of-sagittal-radiographic-parameters-in-adolescent-idiopathic-scoliosis-a-guide-to-reference-values-using-serial-imaging
#17
Hwee Weng Dennis Hey, Gordon Chengyuan Wong, Chloe Chan Xiaoyun, Leok-Lim Lau, Naresh Kumar, Joseph Shantakumar Thambiah, John Nathaniel Ruiz, Ka-Po Gabriel Liu, Hee-Kit Wong
BACKGROUND CONTEXT: Knowledge of sagittal radiographical parameters in AIS patients has not yet caught up with our understanding of their roles in patients with adult spinal deformity. It is likely that more emphasis will be placed in restoring sagittal parameters for AIS patients in the future. Therefore we need to understand how these parameters may vary in AIS to facilitate management plans. PURPOSE: To determine the reproducibility of sagittal spinal parameters on lateral film radiographs in patients with AIS...
January 5, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28060691/sexual-dysfunction-in-breast-cancer-survivors-cross-cultural-adaptation-of-the-sexual-activity-questionnaire-for-use-in-portugal
#18
Filipa Alves da Costa, Manuel Castro Ribeiro, Sofia Braga, Elisabete Carvalho, Fátima Francisco, Ana Costa Miranda, António Moreira, Lesley Fallowfield
INTRODUCTION: The increasing survivor population of breast cancer has shifted research and practice interests into the impacts of the disease and treatment in quality of life aspects. The lack of tools available in Portuguese to objectively evaluate sexual function led to the development of this study, which aimed to cross-culturally adapt and validate the Sexual Activity Questionnaire for use in Portugal. MATERIAL AND METHODS: The questionnaire was translated and back-translated, refined following face-to-face interviews with seven breast cancer survivors, and then self-administered by a larger sample at baseline and a fortnight later to test validity and reliability...
September 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28060378/cd73-regulates-anti-inflammatory-signaling-between-apoptotic-cells-and-endotoxin-conditioned-tissue-macrophages
#19
Patrick S Murphy, Jing Wang, Samir P Bhagwat, Joshua C Munger, William J Janssen, Terry W Wright, Michael R Elliott
The phagocytosis of apoptotic cells (efferocytosis) shifts macrophages to an anti-inflammatory state through a set of still poorly understood soluble and cell-bound signals. Apoptosis is a common feature of inflamed tissues, and efferocytosis by tissue macrophages is thought to promote the resolution of inflammation. However, it is not clear how the exposure of tissue macrophages to inflammatory cues (e.g., PAMPs, DAMPs) in the early stages of inflammation affects immune outcomes of macrophage-apoptotic cell interactions occurring at later stages of inflammation...
January 6, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28059460/memory-for-incidentally-perceived-social-cues-effects-on-person-judgment
#20
Ralph Pawling, Alexander J Kirkham, Steven P Tipper, Harriet Over
Dynamic face cues can be very salient, as when observing sudden shifts of gaze to a new location, or a change of expression from happy to angry. These highly salient social cues influence judgments of another person during the course of an interaction. However, other dynamic cues, such as pupil dilation, are much more subtle, affecting judgments of another person even without awareness. We asked whether such subtle, incidentally perceived, dynamic cues could be encoded in to memory and retrieved at a later time...
February 2017: British Journal of Psychology
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