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https://www.readbyqxmd.com/read/28645214/sodium-fluorescein-facilitates-guided-sampling-of-diagnostic-tumor-tissue-in-nonenhancing-gliomas
#1
Stephen G Bowden, Justin A Neira, Brian J A Gill, Timothy H Ung, Zachary K Englander, George Zanazzi, Peter D Chang, Jorge Samanamud, Jack Grinband, Sameer A Sheth, Guy M McKhann, Michael B Sisti, Peter Canoll, Randy S D'Amico, Jeffrey N Bruce
BACKGROUND: Accurate tissue sampling in nonenhancing (NE) gliomas is a unique surgical challenge due to their intratumoral histological heterogeneity and absence of contrast enhancement as a guide for intraoperative stereotactic guidance. Instead, T2/fluid-attenuated inversion-recovery (FLAIR) hyperintensity on MRI is commonly used as an imaging surrogate for pathological tissue, but sampling from this region can yield nondiagnostic or underdiagnostic brain tissue. Sodium fluorescein is an intraoperative fluorescent dye that has a high predictive value for tumor identification in areas of contrast enhancement and NE in glioblastomas...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645157/secretory-iga-response-against-pseudomonas-aeruginosa-in-the-upper-airways-and-the-link-with-chronic-lung-infection-in-cystic-fibrosis
#2
Renan Mauch, Claudio Rossi, Talita Aiello, José Ribeiro, Antonio Ribeiro, Niels Høiby, Carlos Levy
We assessed the diagnostic ability of an ELISA test for measurement of specific secretory IgA (sIgA) in saliva to identify Cystic Fibrosis (CF) patients with P. aeruginosa chronic lung infection and intermittent lung colonization. A total of 102 Brazilian CF patients and 53 healthy controls were included. Specific serum IgG response was used as a surrogate to distinguish CF patients according to their P. aeruginosa colonization/infection status. The rate of sIgA positivity was 87.1% in CF chronically infected patients (Median value = 181...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645018/take-over-performance-in-evasive-manoeuvres
#3
Riender Happee, Christian Gold, Jonas Radlmayr, Sebastian Hergeth, Klaus Bengler
We investigated after effects of automation in take-over scenarios in a high-end moving-base driving simulator. Drivers performed evasive manoeuvres encountering a blocked lane in highway driving. We compared the performance of drivers 1) during manual driving, 2) after automated driving with eyes on the road while performing the cognitively demanding n-back task, and 3) after automated driving with eyes off the road performing the visually demanding SuRT task. Both minimum time to collision (TTC) and minimum clearance towards the obstacle disclosed a substantial number of near miss events and are regarded as valuable surrogate safety metrics in evasive manoeuvres...
June 20, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28644820/investigation-of-real-tissue-water-equivalent-path-lengths-using-an-efficient-dose-extinction-method
#4
Rongxiao Zhang, Esther Baer, Kyung-Wook Jee, Gregory C Sharp, Jay Flanz, Hsiao-Ming Lu
For proton therapy, an accurate conversion of CT HU to relative stopping power (RSP) is essential. Validation of the conversion based on real tissue samples is more direct than the current practice solely based on tissue substitutes and can potentially address variations over the population. Based on a novel dose extinction method, we measured water equivalent path lengths (WEPL) on animal tissue samples to evaluate the accuracy of CT HU to RSP conversion and potential variations over a population. A broad proton beam delivered a spread out Bragg peak to the samples sandwiched between a water tank and a 2D ion-chamber detector...
June 23, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28644785/what-should-physicians-do-when-they-disagree-clinically-and-ethically-with-a-surrogate-s-wishes
#5
Terri Traudt, Joan Liaschenko
When patients' surrogates and physicians disagree about the appropriateness of aggressive treatment in intensive care units (ICUs), physicians can experience surrogates' demands as sources of moral distress. This article addresses the virtues and communication strategies needed to respond appropriately in such situations. Specifically, we offer a framework and language that rely on moral community to facilitate common ground and alleviate moral distress.
June 1, 2017: AMA Journal of Ethics
https://www.readbyqxmd.com/read/28644688/intraosseous-administration-of-antidotes-a-systematic-review
#6
Audrée Elliott, Pierre-André Dubé, Amélie Cossette-Côté, Laura Patakfalvi, Eric Villeneuve, Martin Morris, Sophie Gosselin
CONTEXT: Intraosseous (IO) access is an established route of administration in resuscitation situations. Patients with serious poisoning presenting to the emergency department may require urgent antidote therapy. However, intravenous (IV) access is not always readily available. OBJECTIVE: This study reviews the current evidence for IO administration of antidotes that could be used in poisoning. The primary outcome was mortality as a surrogate of efficacy. Secondary outcomes included hemodynamic variables, electrocardiographic variables, neurological status, pharmacokinetics outcomes, and adverse effects as defined by each article...
June 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28644185/a-simple-ultrasound-score-for-the-accurate-detection-of-inflammatory-activity-in-crohn-s-disease
#7
Kerri L Novak, Gilaad G Kaplan, Remo Panaccione, Elnaz Ehteshami Afshar, Divine Tanyingoh, Mark Swain, Amelia Kellar, Stephanie Wilson
BACKGROUND: Ultrasound is accurate in the detection of Crohn's disease. Our aim was to identify ultrasound parameters contributing to inflammatory disease activity, develop a simple score, and validate this score prospectively. METHODS: This study comprised 2 single-center investigations. The first was a retrospective study on a population that had received colonoscopies (as a gold-standard diagnostic) within 60 days of ultrasound. The second was a prospective study on 2 populations: patients requiring induction with adalimumab and patients on adalimumab maintenance therapy...
June 20, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28644161/agreement-between-magnetic-resonance-imaging-and-pathologic-findings-in-the-tumor-size-evaluation-before-and-after-neoadjuvant-chemotherapy-treatment-a-prospective-study
#8
Jinlong Cheng, Yan Hou, Junnan Li, Wenjie Wang, Ye Xu, Chunyan Yang, Libing Ma, Harman S Dhillon, Margarita S Openkova, Xin Fan, Zhenzi Li, Kang Li, Ge Lou
OBJECTIVES: To compare the agreement between magnetic resonance imaging (MRI) results and postsurgical pathologic findings for tumor size evaluation in cervical cancer patients before and after neoadjuvant chemotherapy (NACT) treatment. METHODS: The study analyzed the agreement between pretreatment MRI results and postsurgical pathologic findings about the tumor size in 100 cervical cancer patients without NACT and 397 cervical cancer patients with NACT, respectively...
June 23, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28643990/bcl-2-and-caspase-9-serum-levels-in-children-and-adolescents-with-idiopathic-epilepsy-and-active-seizures
#9
Angeliki Skardoutsou, Panagiotis Primikiris, Charalampos Tsentidis, Antonios Marmarinos, Dimitrios Gourgiotis
BACKROUND: In the present study we investigated the levels of proapoptotic Caspase-9 and antiapoptotic Bcl-2 proteins in the sera of children and adolescents with idiopathic epilepsy and tried to relate the findings to the patients clinical parameters. METHODS: This retrospective study consisted of 118 children and adolescents with idiopathic epilepsy, categorized according to type and number of seizures, duration of the disease and the control of seizures and 30 age and sex matched controls...
June 22, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28643881/virucides-in-apiculture-persistence-of-surrogate-enterovirus-under-simulated-field-conditions
#10
Jana Prodělalová, Hana Malenovská, Romana Moutelíková, Dalibor Titěra
BACKGROUND: Honeybee viruses were recognized among the most important factors leading to colony losses worldwide. Colony food and faeces were regarded as possible source of infectious viruses able to contaminate environment and equipment of apiaries. Thus, methods for elimination of viruses are required. No cell culture assay for testing the effect of disinfectants on honeybee viruses is available yet. Therefore, surrogate virus was employed for testing of iodophor- and peracetic acid-based disinfectants efficacy in combination with six organic contaminants at +6 °C and +22 °C...
June 23, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28643826/cationic-silyldiazenido-complexes-of-the-fe-diphosphine-2-n2-platform-structural-and-electronic-models-for-an-elusive-first-intermediate-in-n2-fixation
#11
Adam D Piascik, Peter J Hill, Andrew D Crawford, Laurence R Doyle, Jennifer C Green, Andrew E Ashley
The first cationic Fe silyldiazenido complexes, [Fe(PP)2(NN-SiMe3)](+)[BAr(F)4](-) (PP = dmpe/depe), have been synthesised and thoroughly characterised. Computational studies show the compounds to be useful structural and electronic surrogates for the more elusive [Fe(PP)2(NN-H)](+), which are postulated intermediates in the H(+)/e(-) mediated fixation of N2 by Fe(PP)2(N2) species.
June 23, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28643486/comparison-of-intact-pth-and-bio-intact-pth-assays-among-non-dialysis-dependent-chronic-kidney-disease-patients
#12
Yael Einbinder, Sydney Benchetrit, Eliezer Golan, Tali Zitman-Gal
BACKGROUND: The third-generation bio-intact parathyroid hormone (PTH) (1-84) assay was designed to overcome problems associated with the detection of C-terminal fragments by the second-generation intact PTH assay. The two assays have been compared primarily among dialysis populations. The present study evaluated the correlations and differences between these two PTH assays among patients with chronic kidney disease (CKD) stages 3 to 5 not yet on dialysis. METHODS: Blood samples were collected from 98 patients with CKD stages 3 to 5...
September 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28643483/cell-engineered-nanovesicle-as-a-surrogate-inducer-of-contact-dependent-stimuli
#13
Junho Kim, Chugmin Han, Wonju Jo, Sehong Kang, Siwoo Cho, Dayeong Jeong, Yong Song Gho, Jaesung Park
Heterotypic interactions between cells are crucial in various biological phenomena. Particularly, stimuli that regulate embryonic stem cell (ESC) fate are often provided from neighboring cells. However, except for feeder cultures, no practical methods are identified that can provide ESCs with contact-dependent cell stimuli. To induce contact-dependent cell stimuli in the absence of living cells, a novel method that utilizes cell-engineered nanovesicles (CNVs) that are made by extruding living cells through microporous membranes is described...
June 23, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28643346/red-blood-cells-free-%C3%AE-haemoglobin-pool-a-biomarker-to-monitor-the-%C3%AE-thalassemia-intermedia-variability-the-alphapool-study
#14
Corinne Vasseur, Elisa Domingues-Hamdi, Katia Ledudal, Philippe Le Corvoisier, Caroline Barau, Bijan Ghaleh, Amandine Rialland, Serge Pissard, Frédéric Galactéros, Véronique Baudin-Creuza
The severity of β-thalassaemia (β-thal) intermedia is mainly correlated to the degree of imbalanced α/non α-globin chain synthesis. The phenotypic diversity of β-thal depends on this imbalance and reflects all possible combinations of α- and β-globin genotypes, levels of fetal haemoglobin (HbF) and co-inheritance of other modulating factors. This study aimed to demonstrate the validity of a new surrogate of α/non α-globin biosynthetic ratio by measuring the soluble α-Hb pool in lysed red blood cells...
June 23, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28642890/aryl-hydrocarbon-receptor-activity-may-serve-as-a-surrogate-marker-for-ms-disease-activity
#15
EDITORIAL
Joseph J Sabatino, Scott S Zamvil
No abstract text is available yet for this article.
July 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28642746/virucidal-activity-of-fogged-chlorine-dioxide-and-hydrogen-peroxide-based-disinfectants-against-human-norovirus-and-its-surrogate-feline-calicivirus-on-hard-to-reach-surfaces
#16
Naim Montazeri, Clyde Manuel, Eric Moorman, Janak R Khatiwada, Leonard L Williams, Lee-Ann Jaykus
Human norovirus (NoV) is the leading cause of foodborne illnesses in the United States. Norovirus is shed in high numbers in the feces and vomitous of infected individuals. Contact surfaces contaminated with bodily fluids harboring infectious virus particles serve as vehicles for pathogen transmission. Environmental stability of NoV and its resistance to many conventional disinfectants necessitate effective inactivation strategies to control the spread of virus. We investigated the efficacy of two commercial disinfectants, hydrogen peroxide (7...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642230/a-review-of-pulmonary-toxicity-of-electronic-cigarettes-in-the-context-of-smoking-a-focus-on-inflammation
#17
Peter G Shields, Micah Berman, Theodore M Brasky, Jo L Freudenheim, Ewy A Mathe, Joseph McElroy, Min-Ae Song, Mark D Wewers
The use of electronic cigarettes (e-cigs) is increasing rapidly, but their effects on lung toxicity are largely unknown. Smoking is a well-established cause of lung cancer and respiratory disease, in part through inflammation. It is plausible that e-cig use might affect similar inflammatory pathways. E-cigs are used by some smokers as an aid for quitting or smoking reduction, and by never smokers (e.g., adolescents and young adults). The relative effects for impacting disease risk may differ for these groups...
June 22, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28641890/a-comparative-research-of-different-ensemble-surrogate-models-based-on-set-pair-analysis-for-the-dnapl-contaminated-aquifer-remediation-strategy-optimization
#18
Zeyu Hou, Wenxi Lu, Haibo Xue, Jin Lin
Surrogate-based simulation-optimization technique is an effective approach for optimizing the surfactant enhanced aquifer remediation (SEAR) strategy for clearing DNAPLs. The performance of the surrogate model, which is used to replace the simulation model for the aim of reducing computation burden, is the key of corresponding researches. However, previous researches are generally based on a stand-alone surrogate model, and rarely make efforts to improve the approximation accuracy of the surrogate model to the simulation model sufficiently by combining various methods...
June 15, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28641410/modeling-aquatic-toxicity-through-chromatographic-systems
#19
Alejandro Fernandez-Pumarega, Susana Amézqueta, Sandra Farré, Laura Muñoz-Pascual, Michael H Abraham, Elisabet Fuguet, Marti Roses
Environmental risk assessment requires information about the toxicity of the growing number of chemical products coming from different origins that can contaminate water and become toxicants to aquatic species or other living beings via the trophic chain. Direct toxicity measurements using sensitive aquatic species can be carried out but they may become expensive and ethically questionable. Literature refers to the use of chromatographic measurements that correlate to the toxic effect of a compound over a specific aquatic species as an alternative to get toxicity information...
June 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28641308/detection-of-phosphatidylserine-positive-exosomes-for-the-diagnosis-of-early-stage-malignancies
#20
Raghava Sharma, Xianming Huang, Rolf A Brekken, Alan J Schroit
BACKGROUND: There has been increasing interest in the detection of tumour exosomes in blood for cancer diagnostics. Most studies have focussed on miRNA and protein signatures that are surrogate markers for specific tumour types. Because tumour cells and tumour-derived exosomes display phosphatidylserine (PS) in their outer membrane leaflet, we developed a highly sensitive ELISA-based system that detects picogram amounts of exosomal phospholipid in plasma as a cancer biomarker. METHODS: This report describes the development of a highly specific and sensitive ELISA for the capture of PS-expressing tumour exosomes in the blood of tumour-bearing mice...
June 22, 2017: British Journal of Cancer
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