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https://www.readbyqxmd.com/read/29036938/reactive-oxygen-species-and-nox-enzymes-are-emerging-as-key-players-in-cutaneous-wound-repair
#1
REVIEW
Dominik André-Lévigne, Ali Modarressi, Michael S Pepper, Brigitte Pittet-Cuénod
Our understanding of the role of oxygen in cell physiology has evolved from its long-recognized importance as an essential factor in oxidative metabolism to its recognition as an important player in cell signaling. With regard to the latter, oxygen is needed for the generation of reactive oxygen species (ROS), which regulate a number of different cellular functions including differentiation, proliferation, apoptosis, migration, and contraction. Data specifically concerning the role of ROS-dependent signaling in cutaneous wound repair are very limited, especially regarding wound contraction...
October 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29036915/stat3-but-not-hif-1%C3%AE-is-important-in-mediating-hypoxia-induced-chemoresistance-in-mda-mb-231-a-triple-negative-breast-cancer-cell-line
#2
Hoda Soleymani Abyaneh, Nidhi Gupta, Aneta Radziwon-Balicka, Paul Jurasz, John Seubert, Raymond Lai, Afsaneh Lavasanifar
Hypoxia-induced chemoresistance (HICR) is a well-recognized phenomenon, and in many experimental models, hypoxia inducible factor-1α (HIF-1α) is believed to be a key player. We aimed to better understand the mechanism underlying HICR in a triple negative breast cancer cell line, MDA-MB-231, with a focus on the role of HIF-1α. In this context, the effect of hypoxia on the sensitivity of MDA-MB-231 cells to cisplatin and their stem-like features was evaluated and the role of HIF-1α in both phenomena was assessed...
October 14, 2017: Cancers
https://www.readbyqxmd.com/read/29036903/resveratrol-and-amyloid-beta-mechanistic-insights
#3
REVIEW
Yongming Jia, Na Wang, Xuewei Liu
The amyloid-beta (Aβ) hypothesis that dyshomeostasis between Aβ production and clearance is a very early, key molecular factor in the etiology of Alzheimer's disease (AD) has been proposed and examined in the AD research field. Scientists have focused on seeking natural products or drugs to influence the dynamic equilibrium of Aβ, targeting production and clearance of Aβ. There is emerging evidence that resveratrol (Res), a naturally occurring polyphenol mainly found in grapes and red wine, acts on AD in numerous in vivo and in vitro models...
October 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29036894/how-can-data-drive-policy-and-practice-in-child-welfare-making-the-link-in-canada
#4
Barbara Fallon, Joanne Filippelli, Tara Black, Nico Trocmé, Tonino Esposito
Formal university-child welfare partnerships offer a unique opportunity to begin to fill the gaps in the child welfare knowledge base and link child welfare services to the realities of practice. With resources from a knowledge mobilization grant, a formal partnership was developed between the University of Toronto, clinicians, policy analysts, and researchers from child welfare agencies across Ontario. The key objectives of the grant included: (1) enhancing the capacity of service providers to access and analyze child welfare data to inform service and policy decisions; (2) integrating clinical expertise in service and policy decisions; and (3) developing a joint research agenda addressing high-priority knowledge gaps...
October 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29036864/employment-pathways-of-individuals-with%C3%A2-spinal-cord-injury-living-in%C3%A2-switzerland-a-qualitative-study
#5
Albert Marti, Reuben Escorpizo, Urban Schwegler, Stefan Staubli, Bruno Trezzini
BACKGROUND: Labour market participation (LMP) represents a key goal of rehabilitation for individuals with spinal cord injury (SCI). To achieve this goal, Swiss SCI rehabilitation centres seek, together with their clients, viable follow-up solutions for returning to work after initial rehabilitation. However, the long-term outcomes of such vocational follow-up solutions have not been investigated so far, and there is a paucity of knowledge regarding the various types of employment pathways that persons with SCI living in Switzerland may experience...
October 9, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29036848/concentration-endurance-test-d2-normative-data-for-spanish-speaking-pediatric-population
#6
D Rivera, C Salinas, D Ramos-Usuga, I D Delgado-Mejía, Y Vasallo Key, G P Hernández Agurcia, J Valencia Vásquez, C E García-Guerrero, C García de la Cadena, B V Rabago Barajas, I Romero-García, A I Campos Varillas, M Sánchez-SanSegundo, A Galvao-Carmona, L Lara, E J Granja Gilbert, P Martín-Lobo, J Velázquez-Cardoso, A Caracuel, J C Arango-Lasprilla
OBJECTIVE: To generate normative data for the Concentration Endurance Test (d2) test in Spanish-speaking pediatric populations. METHOD: The sample consisted of 4,373 healthy children from nine countries in Latin America (Chile, Cuba, Ecuador, Guatemala, Honduras, Mexico, Paraguay, Peru, and Puerto Rico) and Spain. Each participant was administered the d2 test as part of a larger neuropsychological battery. The Total number of items processed (TN), Total number of correct responses (CR), Total performance (TP), and Concentration performance (CP) scores were normed using multiple linear regressions and standard deviations of residual values...
October 8, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/29036839/stroke-and-sexual-functioning-a-literature-review
#7
Anabelle Grenier-Genest, Marina Gérard, Frédérique Courtois
BACKGROUND: Stroke has multiple impacts on patients' sexual functioning, be it directly caused by the neurological lesion (s) or indirectly triggered via other psychophysiological processes. Despite a growing number of publications, sexuality is still rarely addressed in the stroke literature - yet, patients have indicated their need for sexual rehabilitation services. OBJECTIVE: To provide a literature review on post-stroke sexual functioning as well as available rehabilitation programs targeting patients' sexuality...
October 11, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/29036813/association-between-later-life-lifestyle-factors-and-alzheimer-s-disease-biomarkers-in-non-demented-individuals-a-longitudinal-descriptive-cohort-study
#8
Babette L R Reijs, Stephanie J B Vos, Hilkka Soininen, Jyrki Lötjonen, Juha Koikkalainen, Maria Pikkarainen, Anette Hall, Ritva Vanninen, Yawu Liu, Sanna-Kaisa Herukka, Yvonne Freund-Levi, Giovanni B Frisoni, Lutz Frölich, Flavio Nobili, Marcel Olde Rikkert, Luiza Spiru, Magda Tsolaki, Åsa K Wallin, Philip Scheltens, Frans Verhey, Pieter Jelle Visser
BACKGROUND: Lifestyle factors have been associated with the risk of dementia, but the association with Alzheimer's disease (AD) remains unclear. OBJECTIVE: To examine the association between later life lifestyle factors and AD biomarkers (i.e., amyloid-β 1-42 (Aβ42) and tau in cerebrospinal fluid (CSF), and hippocampal volume) in individuals with subjective cognitive decline (SCD) and mild cognitive impairment (MCI). In addition, to examine the effect of later life lifestyle factors on developing AD-type dementia in individuals with MCI...
October 11, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036779/barriers-to-effective-conversations-regarding-overweight-and-obesity-in-regional-victoria
#9
Kristen M Glenister, Christina Ar Malatzky, Julian Wright
BACKGROUND: General practitioners (GPs) have a crucial role to play in engaging patients in discussions about overweight and obesity. However, such discussions are currently uncommon. The aim of this study was to examine how GPs in rural areas talk about overweight and obesity with their patients, specifically to identify key barriers to effective conversations. METHODS: This study used a qualitative methodology. Semi-structured interviews were conducted with GPs (n = 7) and patients (n = 7) across two rural areas...
October 2017: Australian Family Physician
https://www.readbyqxmd.com/read/29036777/growing-and-retaining-general-practice-research-leaders-in-australia-how-can-we-do-better
#10
Mieke van Driel, Laura Deckx, Georga Cooke, Marie Pirotta, Gerard F Gill, Tania Winzenberg
BACKGROUND: The aim of this study was to explore the experiences of Australian general practitioners (GPs) with a Doctor of Philosophy (PhD) about their choice to abandon or pursue an academic career. METHODS: A qualitative study of 18 GPs (PhD obtained between 2006 and 2016) was conducted. Semi-structured telephone interviews were transcribed and analysed using concurrent thematic analysis. RESULTS: General practice researchers faced insecure career pathways...
October 2017: Australian Family Physician
https://www.readbyqxmd.com/read/29036718/glutamatergic-response-to-heat-pain-stress-in-schizophrenia
#11
Joshua Chiappelli, Qiaoyun Shi, Sarah Andrea Wijtenburg, Raimi Quiton, Krista Wisner, Frank Gaston, Priyadurga Kodi, Christopher Gaudiot, Peter Kochunov, Laura M Rowland, Liyi Elliot Hong
Regulation of stress response involves top-down mechanisms of the frontal-limbic glutamatergic system. As schizophrenia is associated with glutamatergic abnormalities, we hypothesized that schizophrenia patients may have abnormal glutamatergic reactivity within the dorsal anterior cingulate cortex (dACC), a key region involved in perception of and reaction to stress. To test this, we developed a somatic stress paradigm involving pseudorandom application of safe but painfully hot stimuli to the forearm of participants while they were undergoing serial proton magnetic resonance spectroscopy to measure changes in glutamate and glutamine levels in the dACC...
September 23, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29036702/a-hyperdynamic-h3-3-nucleosome-marks-promoter-regions-in-pluripotent-embryonic-stem-cells
#12
Sharon Schlesinger, Binyamin Kaffe, Shai Melcer, Jose D Aguilera, Divya M Sivaraman, Tommy Kaplan, Eran Meshorer
Histone variants and their chaperones are key regulators of eukaryotic transcription, and are critical for normal development. The histone variant H3.3 has been shown to play important roles in pluripotency and differentiation, and although its genome-wide patterns have been investigated, little is known about the role of its dynamic turnover in transcriptional regulation. To elucidate the role of H3.3 dynamics in embryonic stem cell (ESC) biology, we generated mouse ESC lines carrying a single copy of a doxycycline (Dox)-inducible HA-tagged version of H3...
September 25, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036699/pain-related-acceptance-as-a-mediator-in-the-fear-avoidance-model-of-chronic-pain-a-preliminary-study
#13
Sophie Lykkegaard Ravn, Maria Louison Vang, Henrik Bjarke Vaegter, Tonny Elmose Andersen
Objective: The fear avoidance model has served as a popular, heuristic model in explaining the transition from acute to chronic pain. In addition, the significance of pain-related acceptance in chronic pain development and adjustment is underlined in a vast number of empirical studies. The objective of the current preliminary study was to investigate pain-related acceptance as a mediator within the key cognitive relationships proposed by the fear avoidance model of chronic pain. Materials and Methods: In a cross-sectional design, bodily pain, pain catastrophizing, fear avoidance beliefs, and pain-related acceptance were assessed by questionnaires in 125 chronic pain patients in a Danish multidisciplinary pain center...
September 23, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29036688/a-cell-penetrating-antibody-inhibits-human-rad51-via-direct-binding
#14
Audrey Turchick, Denise C Hegan, Ryan B Jensen, Peter M Glazer
RAD51, a key factor in homology-directed repair (HDR), has long been considered an attractive target for cancer therapy, but few specific inhibitors have been found. A cell-penetrating, anti-DNA, lupus autoantibody, 3E10, was previously shown to inhibit HDR, sensitize tumors to radiation, and mediate synthetic lethal killing of BRCA2-deficient cancer cells, effects that were initially attributed to its affinity for DNA. However, as the molecular basis for its ability to inhibit DNA repair, we report that 3E10 directly binds to the N-terminus of RAD51, sequesters RAD51 in the cytoplasm, and impedes RAD51 binding to DNA...
September 28, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036684/yeastract-an-upgraded-database-for-the-analysis-of-transcription-regulatory-networks-in-saccharomyces-cerevisiae
#15
Miguel C Teixeira, Pedro T Monteiro, Margarida Palma, Catarina Costa, Cláudia P Godinho, Pedro Pais, Mafalda Cavalheiro, Miguel Antunes, Alexandre Lemos, Tiago Pedreira, Isabel Sá-Correia
The YEAst Search for Transcriptional Regulators And Consensus Tracking (YEASTRACT-www.yeastract.com) information system has been, for 11 years, a key tool for the analysis and prediction of transcription regulatory associations at the gene and genomic levels in Saccharomyces cerevisiae. Since its last update in June 2017, YEASTRACT includes approximately 163000 regulatory associations between transcription factors (TF) and target genes in S. cerevisiae, based on more than 1600 bibliographic references; it also includes 247 specific DNA binding consensus recognized by 113 TFs...
September 25, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036673/enhanced-desiccation-tolerance-in-mature-cultures-of-the-streptophytic-green-alga-zygnema-circumcarinatum-revealed-by-transcriptomics
#16
Martin Rippin, Burkhard Becker, Andreas Holzinger
Desiccation tolerance is commonly regarded as one of the key features for the colonization of terrestrial habitats by green algae and the evolution of land plants. Extensive studies, focused mostly on physiology, have been carried out assessing the desiccation tolerance and resilience of the streptophytic genera Klebsormidium and Zygnema. Here we present transcriptomic analyses of Zygnema circumcarinatum exposed to desiccation stress. Cultures of Z. circumcarinatum, grown in liquid medium or on agar plates, were desiccated at ∼86% relative air humidity until Y(II) ceased...
September 22, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29036671/crispr-cas9-mediated-gene-knockout-is-insensitive-to-target-copy-number-but-is-dependent-on-guide-rna-potency-and-cas9-sgrna-threshold-expression-level
#17
Garmen Yuen, Fehad J Khan, Shaojian Gao, Jayne M Stommel, Eric Batchelor, Xiaolin Wu, Ji Luo
CRISPR/Cas9 is a powerful gene editing tool for gene knockout studies and functional genomic screens. Successful implementation of CRISPR often requires Cas9 to elicit efficient target knockout in a population of cells. In this study, we investigated the role of several key factors, including variation in target copy number, inherent potency of sgRNA guides, and expression level of Cas9 and sgRNA, in determining CRISPR knockout efficiency. Using isogenic, clonal cell lines with variable copy numbers of an EGFP transgene, we discovered that CRISPR knockout is relatively insensitive to target copy number, but is highly dependent on the potency of the sgRNA guide sequence...
September 25, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036670/catalytic-and-structural-properties-of-pheophytinase-the-phytol-esterase-involved-in-chlorophyll-breakdown
#18
Luzia Guyer, Kathrin Salinger, Undine Krügel, Stefan Hörtensteiner
During leaf senescence and fruit ripening, chlorophyll is degraded in a multistep pathway into linear tetrapyrroles called phyllobilins. A key feature of chlorophyll breakdown is the removal of the hydrophobic phytol chain that renders phyllobilins water soluble, an important prerequisite for their ultimate storage in the vacuole of senescent cells. Chlorophyllases had been considered for more than a century to catalyze dephytylation in vivo; however, this was recently refuted. Instead, pheophytinase was discovered as a genuine in vivo phytol hydrolase...
September 23, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29036604/accomplishing-reform-successful-case-studies-drawn-from-the-health-systems-of-60-countries
#19
Jeffrey Braithwaite, Russell Mannion, Yukihiro Matsuyama, Paul Shekelle, Stuart Whittaker, Samir Al-Adawi, Kristiana Ludlow, Wendy James, Hsuen P Ting, Jessica Herkes, Louise A Ellis, Kate Churruca, Wendy Nicklin, Clifford Hughes
Healthcare reform typically involves orchestrating a policy change, mediated through some form of operational, systems, financial, process or practice intervention. The aim is to improve the ways in which care is delivered to patients. In our book 'Health Systems Improvement Across the Globe: Success Stories from 60 Countries', we gathered case-study accomplishments from 60 countries. A unique feature of the collection is the diversity of included countries, from the wealthiest and most politically stable such as Japan, Qatar and Canada, to some of the poorest, most densely populated or politically challenged, including Afghanistan, Guinea and Nigeria...
September 20, 2017: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/29036569/opportunities-for-epidemiologists-in-implementation-science-a-primer
#20
Gila Neta, Ross C Brownson, David A Chambers
The field of epidemiology has been defined as the study of the spread and control of disease. However, epidemiology frequently focuses on studies of etiology and distribution of disease at the cost of understanding the best ways to control disease. Moreover, only a small fraction of scientific discoveries is translated into public health practice, and the process from discovery to translation is exceedingly slow. Given the importance of translational science, the future of epidemiologic training should include competency in implementation science, whose goal is to rapidly move evidence into practice...
September 27, 2017: American Journal of Epidemiology
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