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Riin Tamm, Reedik Mägi, Roman Tremmel, Stefan Winter, Evelin Mihailov, Alenka Smid, Anja Möricke, Kathrin Klein, Martin Schrappe, Martin Stanulla, Richard Houlston, Richard Weinshilboum, Irena Mlinarič Raščan, Andres Metspalu, Lili Milani, Matthias Schwab, Elke Schaeffeler
Thiopurine-related hematotoxicity in paediatric acute lymphoblastic leukemia (ALL) and inflammatory bowel diseases has been linked to genetically defined variability in thiopurine S-methyltransferase (TPMT) activity. While gene testing of TPMT is being clinically implemented, it is unclear if additional genetic variation influences TPMT activity with consequences for thiopurine-related toxicity. To examine this possibility, we performed a genome-wide association study (GWAS) of red blood cell TPMT activity in 844 Estonian individuals and 245 paediatric ALL-cases...
October 22, 2016: Clinical Pharmacology and Therapeutics
Erin Traister, Kim L Larson, Dell Hagwood
PURPOSE: We sought to understand decision making, family involvement, and cultural factors that influence palliative care for Guatemalans. DESIGN: A qualitative descriptive study was conducted in Guatemala to explore palliative care experiences among seven participants. FINDINGS: The overarching theme was Relief from Suffering, reinforced by three support systems: the family, community rezadora, and priest. The family made decisions and provided physical care...
October 21, 2016: Journal of Transcultural Nursing: Official Journal of the Transcultural Nursing Society
Chencheng Feng, Yang Zhang, Minghui Yang, Minghong Lan, Huan Liu, Jian Wang, Yue Zhou, Bo Huang
Intervertebral disc (IVD) cell senescence is a recognized mechanism of intervertebral disc degeneration (IDD). Elucidating the molecular mechanisms underlying disc cell senescence will contribute to understanding the pathogenesis of IDD. We previously reported that N-acetylated proline-glycine-proline (N-Ac-PGP), a matrikine, is involved in the process of IDD. However, its roles in IDD are not well understood. Here, using rat nucleus pulposus (NP) cells, we showed that N-Ac-PGP induced premature senescence of NP cells by binding to CXCR1...
October 19, 2016: Biochimica et Biophysica Acta
Mariel S Bello, Raina D Pang, Gregory S Chasson, Lara A Ray, Adam M Leventhal
The association between obsessive-compulsive (OC) symptomatology and smoking is poorly understood, particularly in African Americans-a group subject to smoking- and OC-related health disparities. In a non-clinical sample of 253 African American smokers, we tested the negative reinforcement model of OC-smoking comorbidity, purporting that smokers with higher OC symptoms experience greater negative affect (NA) and urge to smoke for NA suppression upon acute tobacco abstinence. Following a baseline visit involving OC assessment, participants completed two counterbalanced experimental visits (non-abstinent vs...
October 5, 2016: Journal of Anxiety Disorders
Gem Mohan, Julius X Scott, Rizwana Nasrin, Latha Sneha, Rakesh Manohar, Lalitha Subramanian, Sowmiya Narayani, Aruna Rajendran
BACKGROUND: The first counseling or the exchange between the physician and the parent(s) of children with cancer is of vital importance as it sets the tone for the rest of the treatment. The goal of our study was to find out the preferences among parents of Indian children with cancer regarding communication and breaking of bad news when fully informed about the diagnosis. MATERIALS AND METHODS: A sample of 60 parents who had been counseled within 3 months from diagnosis were interviewed with a prepared questionnaire directed at eliciting their experiences with the physicians who broke the bad news to them and also suggestions to improve the exchange...
November 2016: Journal of Pediatric Hematology/oncology
T Lavender, S Wakasiaka, L McGowan, M Moraa, J Omari, W Khisa
AIM: this study aimed to gain understanding of the views of community members in relation to obstetric fistula. DESIGN AND METHOD: a qualitative, grounded theory approach was adopted. Data were collected using in-depth interviews with 45 community members. The constant comparison method enabled generation of codes and subsequent conceptualisations, from the data. SETTING: participants were from communities served by two hospitals in Kenya; Kisii and Kenyatta...
October 4, 2016: Midwifery
Ruoyu Zhang, Lavinia Mägel, Danny Jonigk, Florian Länger, Torsten Lippmann, Patrick Zardo, Frank Pölzing
PURPOSE: Ideal approaches and materials for reconstruction of large chest wall defects remain a topic of debate. We sought to explore the suitability of a reinforced nanostructured cellulose (NC) patch for chest wall reconstruction in an animal model. MATERIALS AND METHODS: In four domestic pigs, a standardized 10 × 10 cm chest wall defect was created by resecting three rib segments. Subsequently the defect was reconstructed via a biosynthetic NC patch (16 × 12 cm) reinforced by polytetrafluoroethylene mesh...
October 21, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
R Stannarius, K Harth
Disclinations in liquid crystals bear striking analogies to defect structures in a wide variety of physical systems, and their straightforward optical observability makes them excellent models to study fundamental properties of defect interactions. We employ freely suspended smectic-C films, which behave as quasi-two-dimensional polar nematics. A procedure to capture high-strength disclinations in localized spots is introduced. These disclinations are released in a controlled way, and the motion of the mutually repelling topological charges with strength +1 is studied quantitatively...
October 7, 2016: Physical Review Letters
Carlota Saldanha
Nitric oxide (NO) produced by endothelial cells interacts with erythrocyte through band 3 protein, being scavenged by haemoglobin. A signal transduction mechanism involving protein Gi and protein band 3 stimulates erythrocyte NO efflux when acetylcholine (ACh) binds to erythrocyte membrane acetylcholinesterase. Binding of normal plasma fibrinogen (Fib) levels, to erythrocyte membrane CD47 decreases the NO efflux. When high Fib concentration and ACh were present the efflux of NO from erythrocytes was normalized...
October 20, 2016: Clinical Hemorheology and Microcirculation
Maria Eduarda Assad Duarte, Ricardo Martins Machado, Andrea Fonseca Jardim da Motta, José Nelson Mucha, Alexandre Trindade Motta
OBJECTIVE: This study aimed to evaluate how different forms of incisal embrasures influence the esthetic perception of the smile, the preferences of each group of evaluators, and the influence of gingival display. MATERIAL AND METHODS: Two photographs of a broad male and female smiles were digitally manipulated to remove imperfections and asymmetries. A second manipulation was performed on the four maxillary incisors, creating 3 different forms of incisal embrasures: rounded, semi-rounded and squared...
October 21, 2016: Journal of Esthetic and Restorative Dentistry
Michelle E Roley-Roberts, Melissa J Zielinski, Gabriela Hurtado, Joseph D Hovey, Jon D Elhai
Research into factors for suicide has revealed relations between trauma exposure and suicidality (e.g., Bridge, Goldstein, & Brent, ; Joiner, Sachs-Ericson, Wingate, Brown, Anestis, & Selby, ) wherein painful and provocative experiences (e.g., nonsuicidal self-injury [NSSI]) are an important link (e.g., Van Orden, Witte, Cukrowicz, Braithwaite, Selby, & Joiner, ; Smith, ). No prior research has assessed the relationship between functions of NSSI and suicidality among childhood trauma survivors. Participants who endorsed childhood trauma exposure (N = 121; Mage  = 18...
October 21, 2016: Suicide & Life-threatening Behavior
Matthew T Keough, Jeffrey D Wardell, Christian S Hendershot, R Michael Bagby, Lena C Quilty
Gray's Reinforcement Sensitivity Theory (RST) predicts that the Behavioral Inhibition System (BIS) may relate to coping-motivated problem gambling, given its central role in anxiety. Studies examining the BIS-problem gambling association, however, are mixed. The revised RST posits that the Behavioral Approach System (BAS) may moderate the effect of the BIS on coping-motivated problem gambling. A concurrently strong BAS may highlight the negatively reinforcing effects of gambling, which may strengthen coping motives and increase gambling-related harms...
October 20, 2016: Journal of Gambling Studies
Jack E Henningfield, Tracy T Smith, Bethea A Kleykamp, Reginald V Fant, Eric C Donny
BACKGROUND AND RATIONALE: Steven R. Goldberg was a pioneering behavioral pharmacologist whose intravenous drug self-administration studies advanced the understanding of conditioned stimuli and schedules of reinforcement as determinants of pattern and persistence of drug-seeking behavior, and in particular, the importance of nicotine in tobacco use. His passing in 2014 led to invitations to contribute articles to psychopharmacology dedicated to his work. OBJECTIVES: The objectives of this review are to summarize and put into historical perspective Goldberg's contributions to elucidate the reinforcing effects of nicotine and to summarize the implications of his research for medication development, tobacco regulation, and potential tobacco control policy options...
October 21, 2016: Psychopharmacology
A C Paulus, S Haßelt, V Jansson, A Giurea, H Neuhaus, T M Grupp, S Utzschneider
Introduction. Increasing interest developed in the use of carbon-fiber-reinforced-poly-ether-ether-ketones (CFR-PEEK) as an alternative bearing material in knee arthroplasty. The effects of CFR-PEEK wear in in vitro and animal studies are controversially discussed, as there are no data available concerning human tissue. The aim of this study was to analyze human tissue containing CFR-PEEK as well as UHMWPE wear debris. The authors hypothesized no difference between the used biomaterials. Methods and Materials...
2016: BioMed Research International
Ivan Pelivanov, Łukasz Ambroziński, Anton Khomenko, Ermias G Koricho, Gary L Cloud, Mahmoodul Haq, Matthew O'Donnell
Damage induced in polymer composites by various impacts must be evaluated to predict a component's post-impact strength and residual lifetime, especially when impacts occur in structures related to human safety (in aircraft, for example). X-ray tomography is the conventional standard to study an internal structure with high resolution. However, it is of little use when the impacted area cannot be extracted from a structure. In addition, X-ray tomography is expensive and time-consuming. Recently, we have demonstrated that a kHz-rate laser-ultrasound (LU) scanner is very efficient both for locating large defects and evaluating the material structure...
June 2016: Photoacoustics
Luca Ivan Ardolino, Marisa Meloni, Giuseppe Brugali, Emanuela Corsini, Corrado Lodovico Galli
BACKGROUND: Polybactum (Effik International, Brussels, Belgium) is a vaginal mucoadhesive product (medical device) designed to form a film that acts as a mechanical barrier with the aim of inhibiting colonization by specific pathogens. It contains polycarbophil, a bioadhesive agent, and lauryl glucoside (LG), a nonionic surfactant that reinforces the barrier effect through its tensioactive properties. OBJECTIVE: To assess the local safety profile, tolerability, and efficacy of Polybactum formulations...
2016: Current Therapeutic Research, Clinical and Experimental
Jing Wang, Zhaofeng Chen, Xiaozhe Peng, Tiantian Yang, Peng Li, Fengyu Cong, Hong Li
To investigate brain activity during the reinforcement learning process in social contexts is a topic of increasing research interest. Previous studies have mainly focused on using electroencephalograms (EEGs) for feedback evaluation in reinforcement learning tasks by measuring event-related potentials. Few studies have investigated the time-frequency (TF) profiles of a cue that manifested whether a following feedback is available or not after decision-making. Moreover, it remains unclear whether the TF profiles of the cue interact with different agents to whom the feedback related...
2016: Frontiers in Psychology
Hui Zhang, Enli Wang, Daowei Zhou, Zhongkui Luo, Zhengxiang Zhang
Global warming influences a series of ecological processes and ecosystems' stability. Although comprehensive studies have been done to investigate responses of various ecosystem processes to rising air temperatures, less is known about changes in soil temperatures and their impact on below-ground processes, particularly in deep layers. Herein, we used 50 y of temperature data (1962-2011) from 360 sites in China to assess spatio-temporal changes in soil temperatures from the surface to a depth of 3.20 m. We determined, apparently for the first time, that soil surface temperature increased 31% more than air temperature, potentially leading to more carbon release to the atmosphere than predicted...
October 21, 2016: Scientific Reports
Sunil Sirohi, Arriel Van Cleef, Jon F Davis
Binge eating and binge alcohol intake are behavioral manifestations of pathological feeding and alcohol use disorder (AUD), respectively. Binge-feeding and AUD have high comorbidity with other psychiatric disorders such as depression, which could have important implications for the management of these conditions. Importantly, these behaviors share many common features suggesting a singular etiology. However, the nature by which binge-feeding affects the development or maintenance of AUD is unclear. The present study examined the impact of a binge-feeding from a nutritionally complete high-fat diet (HFD) on initiation and maintenance of alcohol intake, anxiolytic behavior and central genetic changes in brain regions that control alcohol-reinforced behaviors...
October 17, 2016: Physiology & Behavior
I Fusier, O Parent de Curzon, S Touratier, L Escaut, M Lafaurie, S Fournier, M Sinègre, P Lechat, D Vittecoq
OBJECTIVE: We aimed to document amoxicillin-clavulanic acid prescription to improve the proper use of antibiotics in hospital settings. We used three criteria: quality of medical charts, adequacy of indications, and adequacy of treatment duration. METHOD: This study was designed as a one-day point prevalence survey carried out by antibiotic lead specialists. RESULTS: We included 387 prescriptions from 32 hospitals. Immunodeficiency was recorded as a risk factor in 30% of patients...
October 17, 2016: Médecine et Maladies Infectieuses
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