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https://www.readbyqxmd.com/read/28549262/passive-sampling-of-wastewater-as-a-tool-for-the-long-term-monitoring-of-community-exposure-illicit-and-prescription-drug-trends-as-a-proof-of-concept
#1
J A Baz-Lomba, Christopher Harman, Malcolm Reid, Kevin V Thomas
A passive sampling device, the Polar Organic Chemical Integrative Sampler (POCIS), was calibrated in-situ over a 4-week period in Oslo (Norway) for 10 illicit drugs and pharmaceuticals with the goal of developing an approach for monitoring long-term wastewater drug loads. The calibrations were performed in triplicate using three different overlapping calibration sets under changing environmental conditions that allowed the uncertainty of the sampling rates to be evaluated. All 10 compounds exhibited linear uptake kinetics and provided sampling rates of between 0...
May 20, 2017: Water Research
https://www.readbyqxmd.com/read/28549248/metastatic-chromophobe-renal-cell-carcinoma-treated-with-targeted-therapies-a-renal-cross-channel-group%C3%A2-study
#2
Emeline Colomba, Gwénaël Le Teuff, Tim Eisen, Grant D Stewart, Kate Fife, James Larkin, Andrea Biondo, Lisa Pickering, Anandagopal Srinivasan, Helen Boyle, Lisa Derosa, Cora N Sternberg, Federica Recine, Christy Ralph, Carolina Saldana, Philippe Barthélémy, Jean Christophe Bernhard, Howard Gurney, Gregory Verhoest, Elodie Vauleon, Pierre Bigot, Julien Berger, Christian Pfister, Gwenaelle Gravis, Jean-Michel Rodier, Stéphane Culine, Armelle Caty, Frederic Rolland, Franck Priou, Bernard Escudier, Laurence Albiges
BACKGROUND: Treatment of non-clear cell renal cell carcinoma (RCC) remains controversial despite several recent prospective studies of targeted therapies (TT). Often Vascular Endothelial growth Factor (VEGF) and Mammalian Target of Rapamycin (mTOR) inhibitors are used, extrapolating the data from use of these agents in clear cell RCC. METHODS: We performed a retrospective data analysis within the Renal Cross Channel Group to determine metastatic chromophobe RCC (mChRCC) outcomes in the TT era...
May 23, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28549223/reply-to-c-nabhan-et-al
#3
Qiushi Chen, Nitin Jain, Christopher R Flowers, Jagpreet Chhatwal
No abstract text is available yet for this article.
June 1, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28549192/the-potential-overlapping-populations-for-treatment-with-belimumab-and-rituximab-using-current-nhs-england-and-national-institute-for-health-and-care-excellence-guidelines-in-england-and-wales
#4
Eoghan M McCarthy, Emily Sutton, Stephanie Nesbit, Ben Parker, David Jayne, Bridget Griffiths, David A Isenberg, Anisur Rahman, Caroline Gordon, David P D'Cruz, Benjamin Rhodes, Peter Lanyon, Edward M Vital, Chee-Seng Yee, Christopher J Edwards, Lee-Suan Teh, Mohammed Akil, Neil J McHugh, Asad Zoma, Ian N Bruce
No abstract text is available yet for this article.
June 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28549174/phosphorylated-sirt1-associates-with-replication-origins-to-prevent-excess-replication-initiation-and-preserve-genomic-stability
#5
Koichi Utani, Haiqing Fu, Sang-Min Jang, Anna B Marks, Owen K Smith, Ya Zhang, Christophe E Redon, Noriaki Shimizu, Mirit I Aladjem
Chromatin structure affects DNA replication patterns, but the role of specific chromatin modifiers in regulating the replication process is yet unclear. We report that phosphorylation of the human SIRT1 deacetylase on Threonine 530 (T530-pSIRT1) modulates DNA synthesis. T530-pSIRT1 associates with replication origins and inhibits replication from a group of 'dormant' potential replication origins, which initiate replication only when cells are subject to replication stress. Although both active and dormant origins bind T530-pSIRT1, active origins are distinguished from dormant origins by their unique association with an open chromatin mark, histone H3 methylated on lysine 4...
May 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28549121/long-acting-injectable-anti-retroviral-therapy-an-opportunity-to-improve-hiv-treatment-and-reduce-hiv-transmission-among-persons-being-released-from-prison-facilities
#6
Lauren Brinkley-Rubinstein, David L Rosen, Paul Christopher, Lauri Bazerman, Curt G Beckwith
No abstract text is available yet for this article.
May 26, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28549119/systematic-review-of-cost-effectiveness-of-myocardial-perfusion-scintigraphy-in-patients-with-ischaemic-heart-disease-a-report-from-the-cardiovascular-committee-of-the-european-association-of-nuclear-medicine-endorsed-by-the-european-association-of-cardiovascular
#7
Elin Trägårdh, Siok Swan Tan, Jan Bucerius, Alessia Gimelli, Oliver Gaemperli, Oliver Lindner, Denis Agostini, Christopher Übleis, Roberto Sciagrà, Riemer H Slart, S Richard Underwood, Fabien Hyafil, Marcus Hacker, Hein J Verberne
Coronary artery disease (CAD) is a major cause of death and disability. Several diagnostic tests, such as myocardial perfusion scintigraphy (MPS), are accurate for the detection of CAD, as well as having prognostic value for the prediction of cardiovascular events. Nevertheless, the diagnostic and prognostic value of these tests should be cost-effective and should lead to improved clinical outcome. We have reviewed the literature on the cost-effectiveness of MPS in different circumstances: (i) the diagnosis and management of CAD; (ii) comparison with exercise electrocardiography (ECG) and other imaging tests; (iii) as gatekeeper to invasive coronary angiography (ICA), (iv) the impact of appropriate use criteria; (v) acute chest pain, and (vi) screening of asymptomatic patients with type-2 diabetes...
May 26, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28549105/outbreak-of-pneumocystis-jirovecii-infection-among-heart-transplant-recipients-molecular-investigation-and-management-of-an-inter-human-transmission
#8
William Vindrios, Nicolas Argy, Solène Le Gal, François-Xavier Lescure, Laurent Massias, Minh Patrick Le, Michel Wolff, Yazdan Yazdanpanah, Gilles Nevez, Sandrine Houze, Richard Dorent, Jean-Christophe Lucet
Background: An outbreak of Pneumocystis jirovecii pneumonia (PCP) occurred among heart transplant recipients (HTR) at the outpatient clinic of a university hospital, from March to September 2015. Clinical, therapeutic, biological and molecular data were analyzed to determine its origin and control the outbreak. Methods: Clinical and biological data regarding all HTR followed in the outpatient clinic were collected. PCP diagnosis was based on microscopy and real-time PCR...
May 26, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28549001/contribution-of-natural-language-processing-in-predicting-rehospitalization-risk
#9
Christopher Norman, Thu Van Nguyen, Aurélie Névéol
No abstract text is available yet for this article.
May 25, 2017: Medical Care
https://www.readbyqxmd.com/read/28548902/er-mitochondria-signaling-regulates-autophagy
#10
Patricia Gomez-Suaga, Sebastien Paillusson, Christopher C J Miller
The endoplasmic reticulum (ER) and mitochondria form tight functional contacts that regulate a number of key cellular processes. The formation of these contacts involves "tethering proteins" that function to recruit regions of ER to mitochondria. The integral ER protein VAPB (VAMP associated protein B and C) binds to the outer mitochondrial membrane protein, RMDN3/PTPIP51 (regulator of microtubule dynamics 3) to form one such set of tethers. Recently, we showed that the VAPB-RMDN3 tethers regulate macroautophagy/autophagy...
May 26, 2017: Autophagy
https://www.readbyqxmd.com/read/28548849/de-risking-the-cu-mediated-18f-fluorination-of-heterocyclic-pet-radioligands
#11
Nicholas Taylor, Enrico Emer, Sean Preshlock, Michael Schedler, Matthew Tredwell, Stefan Verhoog, Joël Mercier, Christophe Genicot, Veronique Emilie Gouverneur
Molecules labeled with fluorine 18 (18F) are used in positron emission tomography to visualize, characterize and measure biological processes in the body. Despite recent advances in the incorporation of 18F onto arenes, the development of general and efficient approaches to label radioligands necessary for drug discovery programs remains a significant task. This full account describes a de-risking approach towards the radiosynthesis of heterocyclic PET radioligands using the copper-mediated 18F fluorination of aryl boron reagents with 18F-fluoride as a model reaction...
May 26, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28548655/an-n-acetylglucosamine-transporter-required-for-arbuscular-mycorrhizal-symbioses-in-rice-and-maize
#12
Marina Nadal, Ruairidh Sawers, Shamoon Naseem, Barbara Bassin, Corinna Kulicke, Abigail Sharman, Gynheung An, Kyungsook An, Kevin R Ahern, Amanda Romag, Thomas P Brutnell, Caroline Gutjahr, Niko Geldner, Christophe Roux, Enrico Martinoia, James B Konopka, Uta Paszkowski
Most terrestrial plants, including crops, engage in beneficial interactions with arbuscular mycorrhizal fungi. Vital to the association is mutual recognition involving the release of diffusible signals into the rhizosphere. Previously, we identified the maize no perception 1 (nope1) mutant to be defective in early signalling. Here, we report cloning of ZmNope1 on the basis of synteny with rice. NOPE1 encodes a functional homologue of the Candida albicans N-acetylglucosamine (GlcNAc) transporter NGT1, and represents the first plasma membrane GlcNAc transporter identified from plants...
May 26, 2017: Nature Plants
https://www.readbyqxmd.com/read/28548617/sporadic-pediatric-meningiomas-a-neuroradiological-and-neuropathological-study-of-15-cases
#13
Kristin Huntoon, Charles P Pluto, Lynne Ruess, Daniel R Boué, Christopher R Pierson, Jerome A Rusin, Jeffrey Leonard
OBJECTIVE Sporadic meningiomas have been classified in many different ways. Radiographically, these lesions can be described as occurring in either typical or atypical locations. The purpose of this study was to determine if there are any histopathological differences between sporadic meningiomas that arise in these varying locations in children. METHODS The neuroimaging, histopathological findings, and clinical records in patients with sporadic pediatric meningiomas not associated with neurofibromatosis Type 2 or prior radiation therapy were retrospectively reviewed...
May 26, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28548598/associations-between-endothelin-polymorphisms-and-aneurysmal-subarachnoid-hemorrhage-clinical-vasospasm-delayed-cerebral-ischemia-and-functional-outcome
#14
Christoph J Griessenauer, Robert M Starke, Paul M Foreman, Philipp Hendrix, Mark R Harrigan, Winfield S Fisher, Nilesh A Vyas, Robert H Lipsky, Mingkuan Lin, Beverly C Walters, Jean-Francois Pittet, Mali Mathru
OBJECTIVE Endothelin-1, a potent vasoconstrictor, and its receptors may be involved in the pathogenesis of aneurysmal subarachnoid hemorrhage (aSAH), clinical vasospasm, delayed cerebral ischemia (DCI), and functional outcome following aSAH. In the present study, common endothelin single nucleotide polymorphisms (SNPs) and their relation to aSAH were evaluated. METHODS Blood samples from all patients enrolled in the Cerebral Aneurysm Renin Angiotensin System (CARAS) study were used for genetic evaluation. The CARAS study prospectively enrolled patients with aSAH at 2 academic institutions in the US from 2012 to 2015...
May 26, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28548496/alkylated-selenophene-based-ladder-type-monomers-via-a-facile-route-for-high-performance-thin-film-transistor-applications
#15
Zhuping Fei, Yang Han, Eliot Gann, Thomas Hodsden, Anthony Chesman, Christopher R McNeill, Thomas D Anthopoulos, Martin Heeney
We report the synthesis of two new selenophene containing ladder-type monomers, cyclopentadiselenophene (CDS) and indacenodiselenophene (IDSe), via a twofold and fourfold Pd catalyzed coupling with a 1,1-diborylmethane derivative. Co-polymers with benzothiadiazole (BT) were prepared in high yield by Suzuki polymerization to afford co-polymers which exhibited excellent solubility in a range of non-chlorinated solvents. The CDS co-polymer exhibited a band gap of just 1.18 eV, which is amongst the lowest reported for donor-acceptor polymers...
May 26, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28548465/assessment-of-infantile-hemangiomas-using-a-handheld-wireless-diffuse-optical-spectroscopic-device
#16
Christopher J Fong, Maria C Garzon, Jennifer W Hoi, Hyun K Kim, Christine T Lauren, Kimberly Morel, Lauren Geller, Nina Antonov, Nicole Weitz, June Wu, Andreas H Hielscher
BACKGROUND/OBJECTIVES: Infantile hemangiomas (IHs) are vascular tumors with the potential for significant morbidity. There is a lack of validated objective tools to assess IH severity and response to treatment. Diffuse optical spectroscopy (DOS), a noninvasive, nonionizing imaging modality, can measure total hemoglobin concentration and hemoglobin oxygen saturation in tissue to assess IH vascularity and response to treatment. Our objective was to evaluate the utility of a wireless, handheld DOS system to assess IH characteristics at selected points during their clinical course...
May 26, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28548453/mortality-in-type-1-diabetes-diagnosed-in-childhood-in-northern-ireland-during-1989-2012-a-population-based-cohort-study
#17
Eileen Morgan, Catherine R Black, Noina Abid, Christopher R Cardwell, David R McCance, Christopher C Patterson
OBJECTIVE: To investigate long-term mortality rates and causes of death in individuals diagnosed with type 1 diabetes before the age of 15 years during the period 1989-2012 or known to paediatric diabetes teams in 1989, in Northern Ireland. METHODS: A cohort of 3129 patients from the Northern Ireland Childhood Diabetes Register was linked to death registrations and underlying causes, coded according to ICD-9 or ICD-10. Standardized mortality ratios (SMRs) were calculated as the ratio of observed to expected deaths by sex, attained age, time since diagnosis, calendar period, and cause of death...
May 26, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28548315/aapm-medical-physics-practice-guideline-8-a-linear-accelerator-performance-tests
#18
Koren Smith, Peter Balter, John Duhon, Gerald A White, David L Vassy, Robin A Miller, Christopher F Serago, Lynne A Fairobent
PURPOSE: The purpose of this guideline is to provide a list of critical performance tests in order to assist the Qualified Medical Physicist (QMP) in establishing and maintaining a safe and effective quality assurance (QA) program. The performance tests on a linear accelerator (linac) should be selected to fit the clinical patterns of use of the accelerator and care should be given to perform tests which are relevant to detecting errors related to the specific use of the accelerator. METHODS: A risk assessment was performed on tests from current task group reports on linac QA to highlight those tests that are most effective at maintaining safety and quality for the patient...
May 26, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28548301/night-to-night-variability-of-obstructive-sleep-apnea
#19
Anna S Stöberl, Esther I Schwarz, Sarah R Haile, Christopher D Turnbull, Valentina A Rossi, John R Stradling, Malcolm Kohler
One night of a sleep study is the standard for diagnosis and exclusion of obstructive sleep apnea. Single testing requires high sensitivity of the test method and a stable disease of interest to warrant a low rate of false-negative tests. Obstructive sleep apnea is diagnosed and graded by conventional thresholds of apneas and hypopneas per hour of sleep, and treatment is usually initiated in the presence of symptoms. The aim of this study was to assess night-to-night variability of obstructive sleep apnea to reassess the current practice...
May 26, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28548282/estimating-the-effect-of-immortal-time-bias-in-urologic-research-a-case-example-of-testosterone-replacement-therapy
#20
Christopher J D Wallis, Refik Saskin, Steven A Narod, Calvin Law, Girish S Kulkarni, Arun Seth, Robert K Nam
OBJECTIVE: To quantify the effect of immortal-time bias in an observational study examining the effect of cumulative testosterone exposure on mortality. SUBJECTS AND METHODS: We used a population-based matched cohort study of men aged 66 and older newly treated with testosterone replacement therapy and matched-controls from 2007-2012 in Ontario, Canada to quantify the effects of immortal-time bias. We used generalized estimating equations to determine the association between cumulative testosterone replacement therapy exposure and mortality...
May 26, 2017: BJU International
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