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https://www.readbyqxmd.com/read/28528408/the-glaucous-winged-gull-larus-glaucescens-as-an-indicator-of-chemical-contaminants-in-the-canadian-pacific-marine-environment-evidence-from-stable-isotopes
#1
M L Davis, J E Elliott, T D Williams
The Glaucous-winged gull (Larus glaucescens) has been selected by Environment Canada as a marine indicator species for long-term monitoring of persistent contaminants in the Canadian Pacific. However, the indicator value of this species depends on its trophic level and proportion of marine prey in its diet. Eggs, used as the monitoring medium, are produced entirely from maternal resources and knowledge of adult diet before and during egg production is critical to interpreting contaminant levels. Due to a lack of recent and reliable dietary ecology work, we examined the diet of breeding Glaucous-winged gulls through carbon (δ(13)C) and nitrogen (δ(15)N) stable isotope analysis at three colonies on the Pacific coast...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528123/quantitative-biology-of-hydrogen-peroxide-signaling
#2
REVIEW
Fernando Antunes, Paula Matos Brito
Hydrogen peroxide (H2O2) controls signaling pathways in cells by oxidative modulation of the activity of redox sensitive proteins denominated redox switches. Here, quantitative biology concepts are applied to review how H2O2 fulfills a key role in information transmission. Equations described lay the foundation of H2O2 signaling, give new insights on H2O2 signaling mechanisms, and help to learn new information from common redox signaling experiments. A key characteristic of H2O2 signaling is that the ratio between reduction and oxidation of redox switches determines the range of H2O2 concentrations to which they respond...
May 8, 2017: Redox Biology
https://www.readbyqxmd.com/read/28527951/digital-food-photography-technology-improves-efficiency-and-feasibility-of-dietary-intake-assessments-in-large-populations-eating-ad-libitum-in-collective-dining-facilities
#3
Holly L McClung, Catherine M Champagne, H Raymond Allen, Susan M McGraw, Andrew J Young, Scott J Montain, Aaron P Crombie
BACKGROUND: Accurate assessment of dietary intake continues to challenge researchers, especially in field, or non-laboratory settings. OBJECTIVE: In this study, digital food photography (DFP) methodology was used to assess nutritional intake (NI) of Soldiers participating in the US Army's Ranger Selection and Assessment Program (RASP). METHODS: During this high-intensity six-week course, Soldiers complete simulated operational missions, perform various military tasks, and importantly, eating time is severely limited...
May 17, 2017: Appetite
https://www.readbyqxmd.com/read/28527909/binding-assay-for-characterization-of-protein-kinase-inhibitors-possessing-sub-picomolar-to-sub-millimolar-affinity
#4
Hedi Sinijarv, Shanshan Wu, Taavi Ivan, Kaido Viht, Asko Uri
High demand for inhibitors regulating the activity of protein kinases has stimulated the quest for high throughput and reliable compound screening assays. Here we introduce a method applying a non-metal photoluminescent probe ARC-Lum(Fluo) for determination of dissociation constants of competitive inhibitors of protein kinases. Employing a single probe instead of a combination of antibody and fluorescent tracer makes the assay simpler, cheaper, and more accurate than several other inhibitor-screening technologies...
May 17, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28527833/evaluation-of-the-sipat-instrument-to-assess-psychosocial-risk-in-heart-transplant-candidates-a-retrospective-single-center-study
#5
Elizabeth Vandenbogaart, Lynn Doering, Belinda Chen, Ann Saltzman, Tamara Chaker, Julie W Creaser, Darlene Rourke, Richard W Cheng, Gregg C Fonarow, Mario Deng
OBJECTIVES: We evaluated the reliability of the Stanford Integrated Psychosocial Assessment for Transplantation (SIPAT) in heart transplant (HT) recipients and explored its usefulness in predicting post-transplant outcomes. BACKGROUND: Pre-transplant psychosocial and behavioral risk is associated with post-transplant clinical outcomes. SIPAT is a risk assessment tool created for pre-transplant psychosocial evaluation. METHODS: Via retrospective chart review, three examiners applied the SIPAT to 51 adult HT recipients...
May 17, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28527674/analysis-of-full-coding-sequence-of-the-tp53-gene-in-invasive-vulvar-cancers-implications-for-therapy
#6
Karl Kashofer, Sigrid Regauer
OBJECTIVE: This study evaluates the frequency and type of TP53 gene mutations and HPV status in 72 consecutively diagnosed primary invasive vulvar squamous cell carcinomas (SCC) during the past 5years. METHODS: DNA of formalin-fixed and paraffin embedded tumour tissue was analysed for 32 HPV subtypes and the full coding sequence of the TP53 gene, and correlated with results of p53 immunohistochemistry. RESULTS: 13/72 (18%) cancers were HPV-induced squamous cell carcinomas, of which 1/13 (8%) carcinoma harboured a somatic TP53 mutation...
May 17, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28527517/holistic-evaluation-of-san-huang-tablets-using-a-combination-of-multi-wavelength-quantitative-fingerprinting-and-radical-scavenging-assays
#7
Yan Wang, Guo-Xiang Sun, Yang Jin, Xiu-Man Xie, Ying-Chun Liu, Di-Di Ma, Jing Zhang, Jia-Yue Gao, Yan-Fei Li
The present study was designed to establish a multi-wavelength quantitative fingerprinting method for San-Huang Tablets (SHT), a widely used and commercially available herbal preparation, where high performance liquid chromatography (HPLC) with a diode array detector (DAD) was employed to obtain the fingerprint profiles. A simple linear quantitative fingerprint method (SLQFM) coupled with multi-ingredient simultaneous determination was developed to evaluate the quality consistency of the tested samples qualitatively and quantitatively...
April 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28527198/contrast-enhanced-ultrasound-ceus-in-an-interdisciplinary-intensive-care-unit-icu-diagnostic-efficacy-in-the-assessment-of-post-operative-complications-compared-to-contrast-enhanced-computed-tomography-cect-first-results
#8
M Georgieva, L Beyer, I Goecze, C Stroszczynski, P Wiggermann, E M Jung
To evaluate the effectiveness of high-resolution contrast-enhanced ultrasound (CEUS) to diagnose early post-operative complications in an interdisciplinary intensive care unit.In 50 patients (male 32; female 18) 64 CEUS examinations were performed in an intensive care unit (ICU) setting to detect post-operative complications. Multi-frequency transducer (1-5 and/or 6-9 MHz) were used. All 64 examinations were performed by one experienced examiner. CEUS findings were compared with contrast-enhanced computed tomography (CECT) findings...
May 19, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28527100/parents-expectations-of-high-schools-in-firearm-violence-prevention
#9
Erica Payton, Jagdish Khubchandani, Amy Thompson, James H Price
Firearm violence remains a significant problem in the US (with 2787 adolescents killed in 2015). However, the research on school firearm violence prevention practices and policies is scant. Parents are major stakeholders in relation to firearm violence by youths and school safety in general. The purpose of this study was to examine what parents thought schools should be doing to reduce the risk of firearm violence in schools. A valid and reliable questionnaire was mailed to a national random sample of 600 parents who had at least one child enrolled in a public secondary school (response rate = 47%)...
May 19, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/28526917/do-we-know-the-outcome-predictors-for-cauda-equine-syndrome-ces-a-retrospective-single-center-analysis-of-60-patients-with-ces-with-a-suggestion-for-a-new-score-to-measure-severity-of-symptoms
#10
Alexander König, Lisa Amelung, Marco Danne, Ullrich Meier, Johannes Lemcke
OBJECTIVE: Despite the awareness and familiarity of almost every medical professional with the cauda equine compression syndrome (CES), risk factors for a poor prognosis of the disease remain elusive. Even the relationship between subsequent outcome and the time elapsed from the time of appearance of symptoms to surgery taking place remain obscure. The aim of our study, therefore, was to analyze a relatively large population of our own patients studied consecutively, to identify outcome predictors for CES and to propose a clinical score for CES symptoms (Berlin CES score)...
May 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28526883/openspritzer-an-open-hardware-pressure-ejection-system-for-reliably-delivering-picolitre-volumes
#11
C J Forman, H Tomes, B Mbobo, R J Burman, M Jacobs, T Baden, J V Raimondo
The ability to reliably and precisely deliver picolitre volumes is an important component of biological research. Here we describe a high-performance, low-cost, open hardware pressure ejection system (Openspritzer), which can be constructed from off the shelf components. The device is capable of delivering minute doses of reagents to a wide range of biological and chemical systems. In this work, we characterise the performance of the device and compare it to a popular commercial system using two-photon fluorescence microscopy...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526666/a-smart-toy-to-enhance-the-decision-making-process-at-children-s-psychomotor-delay-screenings-a-pilot-study
#12
María Angeles Gutiérrez García, María Luisa Martín Ruiz, Diego Rivera, Laura Vadillo, Miguel Angel Valero Duboy
BACKGROUND: EDUCERE ("Ubiquitous Detection Ecosystem to Care and Early Stimulation for Children with Developmental Disorders") is an ecosystem for ubiquitous detection, care, and early stimulation of children with developmental disorders. The objectives of this Spanish government-funded research and development project are to investigate, develop, and evaluate innovative solutions to detect changes in psychomotor development through the natural interaction of children with toys and everyday objects, and perform stimulation and early attention activities in real environments such as home and school...
May 19, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28526628/heparin-based-hydrogels-induce-human-renal-tubulogenesis-in-vitro
#13
Heather M Weber, Mikhail V Tsurkan, Valentina Magno, Uwe Freudenberg, Carsten Werner
Dialysis or kidney transplantation is the only therapeutic option for end stage renal disease. Accordingly, there is a large unmet clinical need for new causative therapeutic treatments. Obtaining robust models that mimic the complex nature of the human kidney is a critical step in the development of new therapeutic strategies. Here we establish a synthetic in vitro human renal tubulogenesis model based on a tunable glycosaminoglycan-hydrogel platform. In this system, renal tubulogenesis can be modulated by the adjustment of hydrogel mechanics and degradability, growth factor signaling, and the presence of insoluble adhesion cues, potentially providing new insights for regenerative therapy...
May 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28526487/ultrasound-guided-thoracic-paravertebral-injection-in-dogs-a-cadaveric-study
#14
Diego A Portela, Luis Campoy, Pablo E Otero, Manuel Martin-Flores, Robin D Gleed
OBJECTIVE: To describe ultrasound-visualized anatomy and the spread characteristics of a dye injected in the thoracic paravertebral (TPV) space under ultrasound guidance. STUDY DESIGN: Anatomic cadaver study. ANIMALS: Seven dog cadavers. METHODS: One cadaver was used to observe, identify, and describe the relevant TPV anatomy. In the remaining six, the left fifth TPV space was randomly assigned to be injected with either a low volume (LV; 0...
February 16, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28526463/-the-practice-of-postanesthesia-visits-a-questionnaire-study
#15
Tobias Fink, Hauke Rensing, Thomas Volk, Ragnar Huhn, Alexander M Mathes
BACKGROUND AND OBJECTIVE: Regular postanesthesia visits allow the detection of anesthesia related complications and increase patient satisfaction. Consequently, the performance of postanesthesia visits has been recommended after certain types of anesthesia. However, no data is available concerning the current practice of postanesthesia visits. Therefore, this study was designed to investigate quantity, organization, contents, significance and problems of postanesthesia visits in Germany...
May 16, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28526459/test-retest-reliability-of-the-dual-microphone-voice-range-profile
#16
Trine Printz, Jesper Roed Sorensen, Christian Godballe, Ågot Møller Grøntved
OBJECTIVES: The voice range profile (VRP) measures vocal intensity and fundamental frequency. Phonosurgical and logopedic treatment outcome studies using the VRP report voice improvements of 3-6 semitones (ST) in ST range and 4-7 decibels (dB) in sound pressure level range after treatment. These small improvements stress the importance of reliable measurements. The aim was to evaluate the test-retest reliability of the dual-microphone computerized VRP on participants with healthy voices...
May 16, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28526286/physical-activity-alters-limb-bone-structure-but-not-entheseal-morphology
#17
Ian J Wallace, Julia M Winchester, Anne Su, Doug M Boyer, Nicolai Konow
Studies of ancient human skeletal remains frequently proceed from the assumption that individuals with robust limb bones and/or rugose, hypertrophic entheses can be inferred to have been highly physically active during life. Here, we experimentally test this assumption by measuring the effects of exercise on limb bone structure and entheseal morphology in turkeys. Growing females were either treated with a treadmill-running regimen for 10 weeks or served as controls. After the experiment, femoral cortical and trabecular bone structure were quantified with μCT in the mid-diaphysis and distal epiphysis, respectively, and entheseal morphology was quantified in the lateral epicondyle...
June 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28526036/molecular-characterization-of-dirofilaria-spp-circulating-in-portugal
#18
Cátia Ferreira, Ana Afonso, Manuela Calado, Isabel Maurício, Ana Margarida Alho, José Meireles, Luís Madeira de Carvalho, Silvana Belo
BACKGROUND: Dirofilariosis is a potentially zoonotic parasitic disease, mainly transmitted by mosquito vectors in many parts of the world. Data concerning the canine Dirofilaria species currently circulating in Portugal is scarce. Thereby, a large-scale study was conducted to determine the Dirofilaria spp. present in Portugal, based on a molecular approach, and also to optimize a reliable and highly sensitive species-specific polymerase chain reaction (PCR) assay that could be used for the simultaneous detection and differentiation of Dirofilaria immitis, Dirofilaria repens, and other concurrent filarial species in animal reservoirs...
May 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28526005/validation-of-commercial-business-lists-as-a-proxy-for-licensed-alcohol-outlets
#19
Heather A Carlos, Joy Gabrielli, James D Sargent
BACKGROUND: Studies of retail alcohol outlets are restricted to regions due to lack of U.S. national data. Commercial business lists (BL) offer a possible solution, but no data exists to determine if BLs could serve as an adequate proxy for license data. This paper compares geospatial measures of alcohol outlets derived from a commercial BL with license data for a large US state. METHODS: We validated BL data as a measure of off-premise alcohol outlet density and proximity compared to license data for 5528 randomly selected California residential addresses...
May 19, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28525791/determination-of-thiopurine-s-methyltransferase-activity-by-hydrophilic-interaction-liquid-chromatography-hyphenated-with-mass-spectrometry
#20
Daniel Pecher, Svetlana Dokupilová, Zuzana Zelinková, Maikel Peppelenbosch, Veronika Mikušová, Peter Mikuš
Thiopurine S-methyltransferase (TPMT) plays an important role in the metabolism of thiopurines used in the therapy of inflammatory bowel diseases (IBD). In this work a new progressive method for the determination of TPMT activity in red blood cells lysates was developed. Analysis was carried out by means of hydrophilic interaction liquid chromatography (HILIC) hyphenated with mass spectrometry (MS). In comparison with reversed-phase high-performance liquid chromatography (RP-HPLC), that has been typically applied in determination of TPMT activity, the HILIC significantly improved the analytical signal provided by MS, shortened analysis time, and improved chromatographic resolution...
May 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
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