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https://www.readbyqxmd.com/read/29346804/trabodenoson-an-adenosine-mimetic-with-a1-receptor-selectivity-lowers-intraocular-pressure-by-increasing-conventional-outflow-facility-in-mice
#1
Guorong Li, Karen Y Torrejon, Andrea M Unser, Feryan Ahmed, Iris D Navarro, Rudolf A Baumgartner, David S Albers, W Daniel Stamer
Purpose: To evaluate the relationship between the IOP-lowering effect of trabodenoson and the associated structural and functional changes in the trabecular meshwork (TM). Methods: Six independent cohorts of young and aged mice were exposed to three different topical once-a-day formulations of trabodenoson and eyes were compared to those treated with placebo drops. IOP was measured daily just before drug administration using rebound tonometry. Outflow facility was measured in enucleated eyes...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29346788/vitamin-d-classic-and-novel-actions
#2
Ángel Gil, Julio Plaza-Diaz, María Dolores Mesa
BACKGROUND: Classically, vitamin D has been implicated in bone health by promoting calcium absorption in the gut and maintenance of serum calcium and phosphate concentrations, as well as by its action on bone growth and reorganization through the action of osteoblasts and osteoclasts cells. However, in the last 2 decades, novel actions of vitamin D have been discovered. The present report summarizes both classic and novel actions of vitamin D. SUMMARY: 1,25(OH)2 vitamin D, the active metabolite of vitamin D, also known as calcitriol, regulates not only calcium and phosphate homeostasis but also cell proliferation and differentiation, and has a key a role to play in the responses of the immune and nervous systems...
January 18, 2018: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/29346767/functional-principles-of-posterior-septal-inputs-to-the-medial-habenula
#3
Yo Otsu, Salvatore Lecca, Katarzyna Pietrajtis, Charly Vincent Rousseau, Païkan Marcaggi, Guillaume Pierre Dugué, Caroline Mailhes-Hamon, Manuel Mameli, Marco Alberto Diana
The medial habenula (MHb) is an epithalamic hub contributing to expression and extinction of aversive states by bridging forebrain areas and midbrain monoaminergic centers. Although contradictory information exists regarding their synaptic properties, the physiology of the excitatory inputs to the MHb from the posterior septum remains elusive. Here, combining optogenetics-based mapping with ex vivo and in vivo physiology, we examine the synaptic properties of posterior septal afferents to the MHb and how they influence behavior...
January 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/29346763/derepression-of-the-iroquois-homeodomain-transcription-factor-gene-irx3-confers-differentiation-block-in-acute-leukemia
#4
Tim D D Somerville, Fabrizio Simeoni, John A Chadwick, Emma L Williams, Gary J Spencer, Katalin Boros, Christopher Wirth, Eleni Tholouli, Richard J Byers, Tim C P Somervaille
The Iroquois homeodomain transcription factor gene IRX3 is expressed in the developing nervous system, limb buds, and heart, and transcript levels specify obesity risk in humans. We now report a functional role for IRX3 in human acute leukemia. Although transcript levels are very low in normal human bone marrow cells, high IRX3 expression is found in ∼30% of patients with acute myeloid leukemia (AML), ∼50% with T-acute lymphoblastic leukemia, and ∼20% with B-acute lymphoblastic leukemia, frequently in association with high-level HOXA gene expression...
January 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/29346757/p53-suppresses-metabolic-stress-induced-ferroptosis-in-cancer-cells
#5
Amy Tarangelo, Leslie Magtanong, Kathryn T Bieging-Rolett, Yang Li, Jiangbin Ye, Laura D Attardi, Scott J Dixon
How cancer cells respond to nutrient deprivation remains poorly understood. In certain cancer cells, deprivation of cystine induces a non-apoptotic, iron-dependent form of cell death termed ferroptosis. Recent evidence suggests that ferroptosis sensitivity may be modulated by the stress-responsive transcription factor and canonical tumor suppressor protein p53. Using CRISPR/Cas9 genome editing, small-molecule probes, and high-resolution, time-lapse imaging, we find that stabilization of wild-type p53 delays the onset of ferroptosis in response to cystine deprivation...
January 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/29346744/2017-national-standards-for-diabetes-self-management-education-and-support
#6
Joni Beck, Deborah A Greenwood, Lori Blanton, Sandra T Bollinger, Marcene K Butcher, Jo Ellen Condon, Marjorie Cypress, Priscilla Faulkner, Amy Hess Fischl, Theresa Francis, Leslie E Kolb, Jodi M Lavin-Tompkins, Janice MacLeod, Melinda Maryniuk, Carolé Mensing, Eric A Orzeck, David D Pope, Jodi L Pulizzi, Ardis A Reed, Andrew S Rhinehart, Linda Siminerio, Jing Wang
Purpose The purpose of this study is to review the literature for Diabetes Self-Management Education and Support (DSMES) to ensure the National Standards for DSMES (Standards) align with current evidence-based practices and utilization trends. Methods The 10 Standards were divided among 20 interdisciplinary workgroup members. Members searched the current research for diabetes education and support, behavioral health, clinical, health care environment, technical, reimbursement, and business practice for the strongest evidence that guided the Standards revision...
February 2018: Diabetes Educator
https://www.readbyqxmd.com/read/29346737/quantitative-and-qualitative-assessment-of-the-relative-arterial-contributions-to-the-calcaneus
#7
Johanna C E Donders, Craig E Klinger, Andre D Shaffer, Lionel E Lazaro, Ryan R Thacher, Jonathan P Dyke, David S Wellman, David L Helfet, Dean G Lorich
BACKGROUND: The purpose of this study was to quantitatively and qualitatively assess relative arterial contributions to the calcaneus. METHOD: Fourteen cadaveric ankle pairs were used. In each specimen, the posterior tibial artery, peroneal artery, and anterior tibial artery were cannulated and used for contrast-enhanced magnetic resonance imaging (MRI) and computed tomography (CT). Quantitative MRI analysis of the pre- and postcontrast MRI scans facilitated assessment of relative arterial contributions...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29346729/electronic-interactions-in-iminophosphorane-superbase-complexes-with-carbon-dioxide
#8
Francesca Ingrosso, Manuel F Ruiz-Lopez
Iminophosphoranes or phosphazenes are an important class of compounds with increasing use in synthetic organic chemistry as neutral organic superbases exhibiting low nucleophilicity. Their electronic structure and therefore their properties strongly depend on substitution but there have been very few theoretical studies devoted to this topic, and more specifically to the formation of electron donor-acceptor complexes of iminophosphoranes with electrophiles. In this work, we have investigated the interaction with carbon dioxide at different ab initio levels...
January 18, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29346722/layer-by-layer-epitaxial-growth-of-defect-engineered-strontium-cobaltites
#9
Tassie Andersen, Seyoung Cook, Gang Wan, Hawoong Hong, Laurence D Marks, Dillon D Fong
Control over structure and composition of (ABO3) perovskite oxides offers exciting opportunities since these materials possess unique, tunable properties. Perovskite oxides with cobalt B-site cations are particularly promising, as the range of the cation's stable oxidation states leads to many possible structural frameworks. Here, we report growth of strontium cobalt oxide thin films by molecular beam epitaxy, and conditions necessary to stabilize different defect concentration phases. In situ X-ray scattering is used to monitor structural evolution during growth, while in situ X-ray absorption near-edge spectroscopy is used to probe oxidation state and measure changes to oxygen vacancy concentration as a function of film thickness...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29346721/emulsion-electrospinning-of-polytetrafluoroethylene-ptfe-nanofibrous-membranes-for-high-performance-triboelectric-nanogenerators
#10
Pengfei Zhao, Navneet Soin, K Prashanthi, Jinkai Chen, Shurong Dong, Erping Zhou, Zhigang Zhu, Anand Arcot Narasimulu, Carlo D Montemagno, Liyang Yu, Jikui Luo
Electrospinning is a simple, versatile technique for fabricating fibrous nanomaterials with the desirable features of extremely high porosities and large surface areas. Using emulsion electrospinning, polytetrafluoroethylene/polyethene oxide (PTFE/PEO) membranes were fabricated followed by a sintering process to obtain pure PTFE fibrous membranes, which were further utilised against a polyamide 6 (PA6) membrane for vertical contact-mode triboelectric nanogenerators (TENGs). Electrostatic force microscopy (EFM) measurements of the sintered electrospun PTFE membranes revealed the presence of both positive and negative surface charges owing to the transfer of positive charge from PEO which further corroborated by FTIR measurements...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29346701/identifying-prevalence-and-characteristics-of-behavioral-health-education-in-family-medicine-clerkships-a-cera-study
#11
Mario P DeMarco, Renée M Betancourt, Kelly M Everard, Kent D W Bream
BACKGROUND AND OBJECTIVES: Many patients with behavioral health disorders do not seek or receive adequate care for their conditions. Among those that do, most will receive care in a primary care setting. To best meet this need, clinicians will need to demonstrate proficiency of behavioral health skills and evidence-based practices. We sought to explore the degree to which these skills are being taught in family medicine clerkships. METHODS: The Council of Academic Family Medicine's (CAFM) Educational Research Alliance (CERA) 2016 survey of clerkship directors (CDs) was sent to 141 CDs at US and Canadian medical schools with a required family medicine run course...
January 2018: Family Medicine
https://www.readbyqxmd.com/read/29346684/comparing-cortical-trajectory-transforaminal-lumbar-interbody-fusions-against-pedicle-trajectory-transforaminal-lumbar-interbody-fusions-and-posterolateral-fusions-a-retrospective-cohort-study-of-90-day-outcomes
#12
James G Malcolm, Michael K Moore, Falgun H Choksh, Faiz U Ahmad, Daniel Refai
BACKGROUND: The cortical screw (CS) trajectory for pedicle screw placement is believed to require a smaller incision and less tissue dissection resulting in lower blood loss and faster healing; however, this has not yet been confirmed in clinical studies. OBJECTIVE: To compare CS transforaminal lumbar interbody fusions (TLIF), traditional pedicle screw (TPS) trajectory TLIFs, and posterolateral fusion (PLF) without interbody for differences in operative characteristics and complications...
January 13, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29346668/rad51-and-rtel1-compensate-telomere-loss-in-the-absence-of-telomerase
#13
Margaux Olivier, Cyril Charbonnel, Simon Amiard, Charles I White, Maria E Gallego
Replicative erosion of telomeres is naturally compensated by telomerase and studies in yeast and vertebrates show that homologous recombination can compensate for the absence of telomerase. We show that RAD51 protein, which catalyzes the key strand-invasion step of homologous recombination, is localized at Arabidopsis telomeres in absence of telomerase. Blocking the strand-transfer activity of the RAD51 in telomerase mutant plants results in a strikingly earlier onset of developmental defects, accompanied by increased numbers of end-to-end chromosome fusions...
January 13, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29346659/case-report-facial-nerve-bifurcation-noted-during-resection-of-vestibular-schwannoma
#14
Jennifer D Sokolowski, Douglas S Ruhl, Bradley W Kesser, Ashok R Asthagiri
BACKGROUND AND IMPORTANCE: Resection of cerebellopontine angle tumors is challenging because the proximity of the facial nerve puts it at risk of inadvertent injury and subsequent dysfunction. It is critical to consider variations in anatomy and be aware of the potential deviations in the course of the nerve in order to avoid damage. CLINICAL PRESENTATION: We present a case of a facial nerve bifurcation identified during resection of a vestibular schwannoma. CONCLUSION: This is the only reported case of proximal facial nerve bifurcation...
January 13, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29346646/the-evolutionary-history-of-nebraska-deer-mice-local-adaptation-in-the-face-of-strong-gene-flow
#15
Susanne P Pfeifer, Stefan Laurent, Vitor C Sousa, Catherine R Linnen, Matthieu Foll, Laurent Excoffier, Hopi E Hoekstra, Jeffrey D Jensen
The interplay of gene flow, genetic drift, and local selective pressure is a dynamic process that has been well studied from a theoretical perspective over the last century. Wright and Haldane laid the foundation for expectations under an island-continent model, demonstrating that an island-specific beneficial allele may be maintained locally if the selection coefficient is larger than the rate of migration of the ancestral allele from the continent. Subsequent extensions of this model have provided considerably more insight...
January 15, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29346640/preventive-chemotherapy-to-control-soil-transmitted-helminthiasis-averted-more-than-500-000-dalys-in-2015
#16
A Montresor, W Trouleau, D Mupfasoni, M Bangert, S A Joseph, A Mikhailov, C Fitzpatrick
Background: Preventive chemotherapy (PC), the large-scale administration of anthelminthics, is recommended by the World Health Organization (WHO) for the control of soil-transmitted helminthiasis (STH). Since 2010, donated anthelminthics for STH have boosted the implementation of PC programmes in children, achieving global coverage of more than 60% in 2015. The WHO Global Health Estimates attribute an annual loss of over 3.3 million disability-adjusted life-years (DALYs) to STH. The aim of this study is to estimate the impact of PC programmes on child morbidity...
January 16, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29346636/tuberculosis-among-the-homeless-in-chennai-city-south-india
#17
Chandrakumar Dolla, C Padmapriyadarsini, A Pradeep Menon, M Muniyandi, Srividya Adinarayanan, Gomathi Sekar, D Kavitha, Srikanth Prasad Tripathy, Soumya Swaminathan
Background: In India from a national perspective, the incidence/prevalence of active tuberculosis (TB) among the homeless are unknown. Methods: Homeless individuals, aged 15 years and above, were screened for TB by radiography and smear examination in Chennai city. Results: 301 individuals were enrolled and screened for TB; 8% (24/301) had chest symptoms; 5.6% (17/301) found X-ray abnormalities. The overall prevalence of TB was 1661/100 000; prevalence of culture-positive TB was 997/100 000 and smear-positive TB was 664/100 000 population...
January 16, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29346635/a-scoping-study-of-frameworks-for-adapting-public-health-evidence-based-interventions
#18
Cam Escoffery, Erin Lebow-Skelley, Hallie Udelson, Elaine A Böing, Richard Wood, Maria E Fernandez, Patricia D Mullen
Evidence-based public health translation of research to practice is essential to improve the public's health. Dissemination and implementation researchers have explored what happens once practitioners adopt evidence-based interventions (EBIs) and have developed models and frameworks to describe the adaptation process. This scoping study identified and summarized adaptation frameworks in published reports and grey literature. We followed the recommended steps of a scoping study: (a) identifying the research question; (b) identifying relevant studies; (c) selecting studies; (d) charting the data; (e) collating, summarizing, and reporting the results; and (f) consulting with experts...
January 16, 2018: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/29346630/vitamin-d-toxicity-a-16-year-retrospective-study-at-an-academic-medical-center
#19
John P Lee, Michael Tansey, Jennifer G Jetton, Matthew D Krasowski
Background: Interest in vitamin D has increased during the past 2 decades, with a corresponding increase in laboratory testing of 25-hydroxyvitamin D [25(OH)D]. The vast majority of specimens tested display normal or deficient levels of 25(OH)D; concentrations rarely fall in the potentially toxic range. Methods: We performed a retrospective investigation of elevated 25(OH)D levels during a 16-year period at the University of Iowa Hospitals and Clinics (UIHC), a 734-bed tertiary-/quaternary-care academic medical center in the midwestern United States...
January 13, 2018: Laboratory Medicine
https://www.readbyqxmd.com/read/29346621/assessing-polymyalgia-rheumatica-activity-when-c-reactive-protein-is-unavailable-or-uninterpretable
#20
Valérie Devauchelle-Pensec, Lea Saraux, Jean Marie Berthelot, Michel De Bandt, Divi Cornec, Dewi Guellec, Thierry Marhadour, Sandrine Jousse-Joulin, Maelenn Gouillou, Alain Saraux
Objective: The PMR activity score (PMR-AS) includes the CRP value, which may be lacking or invalid owing to anti-IL-6 therapy. Our objective was to develop alternatives to PMR-AS that do not require CRP. Methods: We used the Club Rhumatisme et Inflammation (CRI; 89 patients with PMR) and the Tolerance and Efficacy of tocilizumab iN pOlymyalgia Rheumatica (TENOR; 20 patients with recent-onset PMR naive to glucocorticoid who received three tocilizumab infusions, at weeks 0, 4 and 8, followed by prednisone from weeks 12 to 24) cohorts...
January 15, 2018: Rheumatology
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