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https://www.readbyqxmd.com/read/28110058/threshold-dose-distribution-in-walnut-allergy
#1
Mark A Blankestijn, Ben C Remington, Geert F Houben, Joe L Baumert, André C Knulst, W Marty Blom, Rob J B Klemans, Steve L Taylor
BACKGROUND: In food allergy, eliciting doses (EDs) of foods on a population level can improve risk management and labeling strategies for the food industry and regulatory authorities. Previously, data available for walnut were unsuitable to determine EDs. OBJECTIVE: The objective of this study was to determine EDs for walnut allergic adults and to compare with previously established threshold data for peanut and tree nuts. METHODS: Prospectively, adult subjects with a suspected walnut allergy underwent a low-dose double-blind, placebo-controlled food challenge...
January 18, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28109970/migraine-headache-and-long-term-cardiovascular-outcomes-an-extended-follow-up-of-the-women-s-ischemia-syndrome-evaluation
#2
Cecil A Rambarat, Islam Y Elgendy, B Delia Johnson, Steve E Reis, Diane V Thompson, Barry L Sharaf, Vera Bittner, George Sopko, C Noel Bairey Merz, Carl J Pepine, Bina Ahmed
BACKGROUND: The association between migraine headache and cardiovascular events has been inconsistent. This study determines the long-term risk of cardiovascular events among women with and without a history of migraine headache who were under evaluation for suspected myocardial ischemia in the Women's Ischemia Syndrome Evaluation (WISE). METHODS: The WISE is a National Heart, Lung and Blood Institute sponsored prospective, multicenter study which aims to improve myocardial ischemia evaluation in women...
January 18, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28109455/impact-of-aortic-valve-closure-on-adverse-events-and-outcomes-with-the-heartware-ventricular-assist-device
#3
EDITORIAL
Steve K Singh
No abstract text is available yet for this article.
January 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28108658/computational-approach-for-deriving-cancer-progression-roadmaps-from-static-sample-data
#4
Yijun Sun, Jin Yao, Le Yang, Runpu Chen, Norma J Nowak, Steve Goodison
As with any biological process, cancer development is inherently dynamic. While major efforts continue to catalog the genomic events associated with human cancer, it remains difficult to interpret and extrapolate the accumulating data to provide insights into the dynamic aspects of the disease. Here, we present a computational strategy that enables the construction of a cancer progression model using static tumor sample data. The developed approach overcame many technical limitations of existing methods. Application of the approach to breast cancer data revealed a linear, branching model with two distinct trajectories for malignant progression...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28107764/endoscopic-ultrasound-guided-biliary-access-versus-precut-papillotomy-in-patients-with-failed-biliary-cannulation-a-retrospective-study
#5
Alexander Lee, Anupam Aditi, Yasser M Bhat, Kenneth F Binmoeller, Chris Hamerski, Oriol Sendino, Steve Kane, John P Cello, Lukejohn W Day, Medi Mohamadnejad, V Raman Muthusamy, Rabindra Watson, Jason B Klapman, Sri Komanduri, Sachin Wani, Janak N Shah
Background and aims Precut papillotomy is widely used after failed biliary cannulation. Endoscopic ultrasound (EUS)-guided biliary access techniques are newer methods to facilitate access and therapy in failed cannulation. We evaluated the impact of EUS-guided biliary access on endoscopic retrograde cholangiopancreatography (ERCP) success and compared these techniques to precut papillotomy. Patients and methods We retrospectively compared two ERCP cohorts. One cohort consisted of biliary ERCPs (n = 1053) attempted in patients with native papillae and surgically unaltered anatomy in whom precut papillotomy and/or EUS-guided biliary access were routinely performed immediately after failed cannulation...
January 20, 2017: Endoscopy
https://www.readbyqxmd.com/read/28107609/carbon-nanodot-solar-cells-from-renewable-precursors
#6
Maria-Magdalena Titirici, Adam Marinovic, Steve Dunn, Lim Swee Kiat, Joe Briscoe
It has recently been shown that waste biomass can be converted into a wide range of functional materials, including those with desirable optical and electronic properties, offering the opportunity to find new uses for these renewable resources. Photovoltaics is one area where finding the combination of abundant, low-cost and non-toxic materials with the necessary functionality can be challenging. In this paper we compare the performance of carbon nanodots derived from a wide range of biomaterials obtained from different biomass sources as sensitizers for TiO2-based nanostructured solar cells; polysaccharides (chitosan and chitin), monosaccharide (D-glucose), amino acids (L-arginine and L-cysteine) and raw lobster shells are all used to produce carbon nanodots via hydrothermal carbonisation...
January 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28107598/dropout-in-clinical-trials-of-pharmacologic-treatment-for-methamphetamine-dependence-the-role-of-initial-abstinence
#7
Ryan Cook, Brendan Quinn, Keith Heinzerling, Steve Shoptaw
BACKGROUND AND AIMS: High rates of loss to follow-up represent a significant challenge to clinical trials of pharmacologic treatments for methamphetamine (MA) use disorder. We aimed to estimate and test the relationship between achieving and maintaining abstinence in the initial weeks of study participation and subsequent retention in such trials, hypothesizing that participants able to achieve early abstinence would be less likely to drop out. DESIGN: Data from four randomized controlled trials (RCTs) of pharmacologic treatments for MA use disorder were pooled and analyzed using a random-effects approach...
January 20, 2017: Addiction
https://www.readbyqxmd.com/read/28106345/blood-based-detection-of-ras-mutations-to-guide-anti-egfr-therapy-in-colorectal-cancer-patients-concordance-of-results-from-circulating-tumor-dna-and-tissue-based-ras-testing
#8
Wolff Schmiegel, Rodney J Scott, Susan Dooley, Wendy Lewis, Cliff J Meldrum, Peter Pockney, Brian Draganic, Steve Smith, Chelsee Hewitt, Hazel Philimore, Amanda Lucas, Elva Shi, Kateh Namdarian, Timmy Chan, Danilo Acosta, Su Ping-Chang, Andrea Tannapfel, Anke Reinacher-Schick, Waldemar Uhl, Christian Teschendorf, Heiner Wolters, Josef Stern, Richard Viebahn, Helmut Friess, Klaus-Peter Janssen, Ulrich Nitsche, Julia Slotta-Huspenina, Michael Pohl, Deepak Vangala, Alexander Baraniskin, Barbara Dockhorn-Dworniczak, Susanne Hegewisch-Becker, Philippe Ronga, Daniel L Edelstein, Frederick S Jones, Stephan Hahn, Stephen B Fox
An accurate blood-based RAS mutation assay to determine eligibility of metastatic colorectal cancer (mCRC) patients for anti-EGFR therapy would benefit clinical practice by better informing decisions to administer treatment independent of tissue availability. The objective of this study was to determine the level of concordance between plasma and tissue RAS mutation status in patients with mCRC to gauge whether blood-based RAS mutation testing is a viable alternative to standard-of-care RAS tumor testing. RAS testing was performed on plasma samples from newly diagnosed metastatic patients, or from recurrent mCRC patients using the highly sensitive digital PCR technology, BEAMing (beads, emulsions, amplification, and magnetics), and compared with DNA sequencing data of respective FFPE (formalin-fixed paraffin-embedded) tumor samples...
November 16, 2016: Molecular Oncology
https://www.readbyqxmd.com/read/28104688/mice-with-a-deficiency-in-clec-2-are-protected-against-deep-vein-thrombosis
#9
Holly Payne, Tatyana Ponomaryov, Steve P Watson, Alexander Brill
Deep vein thrombosis (DVT) with its major complication, pulmonary embolism, is a global health problem. Mechanisms of DVT remain incompletely understood. Platelets play a role in DVT but the impact of specific platelet receptors remains unclear. Platelet C-type lectin-like receptor 2 (CLEC-2) is known to maintain the physiological state of blood vasculature under inflammatory conditions. DVT is a thromboinflammatory disorder developing largely as sterile inflammation in the vessel wall. We hypothesized therefore that CLEC-2 might play a role in DVT...
January 19, 2017: Blood
https://www.readbyqxmd.com/read/28104544/molecular-genetics-of-familial-hypercholesterolemia-in-israel-revisited
#10
Ronen Durst, Uche Ken Ibe, Shoshi Shpitzen, Daniel Schurr, Osnat Eliav, Marta Futema, Ros Whittall, Auryan Szalat, Vardiella Meiner, Hilla Knobler, Dov Gavish, Yaakov Henkin, Avishay Ellis, Ardon Rubinstein, Dror Harats, Rafael Bitzur, Bruno Hershkovitz, Steve E Humphries, Eran Leitersdorf
BACKGROUND AND AIMS: Familial hypercholesterolemia (FH) is an autosomal dominant disease caused by mutations in the genes for LDL receptor (LDLR), apolipoprotein B (APOB) and proprotein convertase subtilisin/kexin type9 (PCSK9). The purpose of the current investigation was to define the current spectrum of mutations causing FH in Israel. METHODS: New families were collected through the MEDPED (Make Early Diagnosis Prevent Early Death) FH program. Molecular analysis of the LDLR, PCSK9 and APOB genes was done using High Resolution Melt and direct sequencing in 67 index cases...
December 18, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28104100/pathophysiologic-mechanisms-in-heart-failure-role-of-the-sympathetic-nervous-system
#11
Steve Antoine, Gaurang Vaidya, Haider Imam, Daniel Villarreal
The syndrome of heart failure involves complex pathophysiologic mechanisms and is associated with extremely high-morbidity, mortality and economic costs. This growing global epidemic has diverse etiologies and is fundamentally characterized by dyshomeostasis between heart and kidneys, leading to development and progression of the cardiorenal syndrome. Excessive and sustained sympathoexcitation has emerged as a single prominent factor involved in the structural and functional dysfunction of multiple organ systems during this disease...
January 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28103524/validation-of-a-bicycle-simulator-for-road-safety-research
#12
Steve O'Hern, Jennie Oxley, Mark Stevenson
The study's aim was to assess the behavioural validity of participants using of a newly developed bicycle simulator with respect to a range of cycling performance measures collected both using the cycling simulator and on-road. The validation study consisted of a within-subjects study design comparing participants riding on-road with riding in the simulator. The study recruited 26 participants ranging in age from 18 to 35 years (M=25.0, SD=4.8). Absolute validity was established for measures of spatial positioning including average lane position, deviation in lane position and average passing distance from kerbside parked cars...
January 16, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28103286/mirnas-do-not-regulate-circadian-protein-synthesis-in-the-dinoflagellate-lingulodinium-polyedrum
#13
Steve Dagenais-Bellefeuille, Mathieu Beauchemin, David Morse
Dinoflagellates have been shown to express miRNA by bioinformatics and RNA blot (Northern) analyses. However, it is not yet known if miRNAs are able to alter gene expression in this class of organisms. We have assessed the possibility that miRNA may mediate circadian regulation of gene expression in the dinoflagellate Lingulodinium polyedrum using the Luciferin Binding Protein (LBP) as a specific example. LBP is a good candidate for regulation by miRNA since mRNA levels are constant over the daily cycle while protein synthesis is restricted by the circadian clock to a period of several hours at the start of the night phase...
2017: PloS One
https://www.readbyqxmd.com/read/28102589/cover-image-volume-173a-number-2-february-2017
#14
Gilles Maussion, Cristiana Cruceanu, Jill A Rosenfeld, Scott C Bell, Fabrice Jollant, Jin Szatkiewicz, Ryan L Collins, Carrie Hanscom, Ilaria Kolobova, Nicolas Menjot de Champfleur, Ian Blumenthal, Colby Chiang, Vanessa Ota, Christina Hultman, Colm O'Dushlaine, Steve McCarroll, Martin Alda, Sebastien Jacquemont, Zehra Ordulu, Christian R Marshall, Melissa T Carter, Lisa G Shaffer, Pamela Sklar, Santhosh Girirajan, Cynthia C Morton, James F Gusella, Gustavo Turecki, Dimitri J Stavropoulos, Patrick F Sullivan, Stephen W Scherer, Michael E Talkowski, Carl Ernst
The cover image, by Carl Ernst et al., is based on the Original Article Implication of LRRC4C and DPP6 in neurodevelopmental disorders, DOI: 10.1002/ajmg.a.38021.
February 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28102343/individualised-multiplexed-circulating-tumour-dna-assays-for-monitoring-of-tumour-presence-in-patients-after-colorectal-cancer-surgery
#15
Sarah B Ng, Clarinda Chua, Matthew Ng, Anna Gan, Polly Sy Poon, Melissa Teo, Cherylin Fu, Wei Qiang Leow, Kiat Hon Lim, Alexander Chung, Si-Lin Koo, Su Pin Choo, Danliang Ho, Steve Rozen, Patrick Tan, Mark Wong, William F Burkholder, Iain Beehuat Tan
Circulating tumour DNA (ctDNA) has the potential to be a specific biomarker for the monitoring of tumours in patients with colorectal cancer (CRC). Here, our aim was to develop a personalised surveillance strategy to monitor the clinical course of CRC after surgery. We developed patient-specific ctDNA assays based on multiplexed detection of somatic mutations identified from patient primary tumours, and applied them to detect ctDNA in 44 CRC patients, analysing a total of 260 plasma samples. We found that ctDNA detection correlated with clinical events - it is detectable in pre-operative but not post-operative plasma, and also in patients with recurrent CRC...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101444/accelerometer-data-treatment-for-adolescents-fitting-a-piece-of-the-puzzle
#16
Melody Smith, Steve Taylor, Leon Iusitini, Tom Stewart, Fa'asisila Savila, El-Shadan Tautolo, Lindsay Plank, Shabnam Jalili-Moghaddam, Janis Paterson, Elaine Rush
This study aimed to assess the differences in participant retention and associations between physical activity and key variables when a range of accelerometer data inclusion criteria are employed. Data were drawn from 204 adolescents of Pacific Island heritage (survey, body composition, 7-day accelerometry) and their parents (date of birth, socioeconomic status) between October 2014 and February 2016 in Auckland, New Zealand. Data wear time criteria for inclusion were as follows: A) > = 10 h/weekday or > = 8 h weekend day, > = 5 days (at least one weekend day); B) > = 10 h/weekday or > = 8 h weekend day, > = 4 days; C) > = 7 h/day, > = 3 days; D) > = 10 h/day, > = 1 day...
March 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28100394/replication-study-melanoma-genome-sequencing-reveals-frequent-prex2-mutations
#17
Stephen K Horrigan, Pascal Courville, Darryl Sampey, Faren Zhou, Steve Cai
In 2015, as part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Chroscinski et al., 2014) that described how we intended to replicate selected experiments from the paper "Melanoma genome sequencing reveals frequent PREX2 mutations" (Berger et al., 2012). Here we report the results of those experiments. We regenerated cells stably expressing ectopic wild-type and mutant phosphatidylinositol-3,4,5-trisphosphate-dependent Rac exchange factor 2 (PREX2) using the same immortalized human NRAS(G12D) melanocytes as the original study...
January 19, 2017: ELife
https://www.readbyqxmd.com/read/28100210/prevalence-of-psychiatric-morbidity-in-a-community-sample-in-western-kenya
#18
Edith Kwobah, Steve Epstein, Ann Mwangi, Debra Litzelman, Lukoye Atwoli
BACKGROUND: About 25% of the worldwide population suffers from mental, neurological and substance use disorders but unfortunately, up to 75% of affected persons do not have access to the treatment they need. Data on the magnitude of the mental health problem in Kenya is scarce. The objectives of this study were to establish the prevalence and the socio-demographic factors associated with mental and substance use disorders in Kosirai division, Nandi County, Western Kenya. METHODS: This was a cross sectional descriptive study in which participants were selected by simple random sampling...
January 18, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28099934/tolfenamic-acid-induced-alterations-in-genes-and-pathways-in-pancreatic-cancer-cells
#19
Umesh T Sankpal, Steve Goodison, Michelle Jones-Pauley, Myrna Hurtado, Fan Zhang, Riyaz Basha
Non-steroidal anti-inflammatory drugs (NSAIDs) are being tested extensively for their role in the treatment and prevention of several cancers. Typically NSAIDs exhibit anti-tumor activities via modulation of cyclooxygenase (COX)-dependent mechanisms, however, an anti-cancer NSAID tolfenamic acid (TA) is believed to work through COX-independent pathways. Results from our laboratory and others have demonstrated the anti-cancer activity of TA in various cancer models including pancreatic cancer. TA has been shown to modulate certain cellular processes including, apoptosis, reactive oxygen species and signaling...
January 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28099456/burden-of-idiopathic-pulmonary-fibrosis-progression-a-5-year-longitudinal-follow-up-study
#20
Vincent Cottin, Aurélie Schmidt, Laura Catella, Fanny Porte, Céline Fernandez-Montoya, Katell Le Lay, Stève Bénard
Idiopathic pulmonary fibrosis (IPF) is a fatal lung disease with an unpredictable course. An observational study was set up using the French hospital discharge database to describe the reasons, outcomes and costs of hospitalisations related to this disease. Patients newly hospitalised for idiopathic pulmonary fibrosis (ICD-10 code: J84.1) in 2008 were identified and followed for 5 years. As J84.1 includes other fibrotic pulmonary diseases, an algorithm excluding age<50 years and presence of a differential diagnosis in the following year was defined...
2017: PloS One
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