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https://www.readbyqxmd.com/read/28528142/per-and-polyfluoroalkyl-substances-pfas-in-american-red-cross-adult-blood-donors-2000-2015
#1
Geary W Olsen, David C Mair, Cleston C Lange, Laura M Harrington, Timothy R Church, Corinne L Goldberg, Ross M Herron, Hank Hanna, John B Nobiletti, Jorge A Rios, William K Reagen, Carol A Ley
In 2015, thirteen per- and polyfluoroalkyl substances (PFAS), including perfluorohexanesulfonate (PFHxS), perfluorooctanesulfonate (PFOS), perfluorooctanoate (PFOA), perfluorononanoate (PFNA), and perfluorodecanoate (PFDA) were analyzed in human plasma that was collected from a total of 616 American Red Cross male and female blood donors (ages 20-69) at 6 regional blood collection centers. Plasma samples were analyzed using a validated solvent precipitation-isotope dilution direction-liquid chromatography tandem mass spectrometry method...
May 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/28527441/an-assessment-of-low-lying-excitation-energies-and-triplet-instabilities-of-organic-molecules-with-an-ab-initio-bethe-salpeter-equation-approach-and-the-tamm-dancoff-approximation
#2
Tonatiuh Rangel, Samia M Hamed, Fabien Bruneval, Jeffrey B Neaton
The accurate prediction of singlet and triplet excitation energies is an area of intense research of significant fundamental interest and critical for many applications. Most calculations of singlet and triplet energies use time-dependent density functional theory (TDDFT) in conjunction with an approximate exchange-correlation functional. In this work, we examine and critically assess an alternative method for predicting low-lying neutral excitations with similar computational cost, the ab initio Bethe-Salpeter equation (BSE) approach, and compare results against high-accuracy wavefunction-based methods...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527232/three-dimensional-evaluation-of%C3%A2-postural%C3%A2-stability-in-parkinson-s-disease-with-mobile-technology
#3
Sarah J Ozinga, Mandy Miller Koop, Susan M Linder, Andre G Machado, Tanujit Dey, Jay L Alberts
BACKGROUND: Postural instability is a hallmark of Parkinson's disease. Objective metrics to characterize postural stability are necessary for the development of treatment algorithms to aid in the clinical setting. OBJECTIVE: The aim of this project was to validate a mobile device platform and resultant three-dimensional balance metric that characterizes postural stability. METHODS: A mobile Application was developed, in which biomechanical data from inertial sensors within a mobile device were processed to characterize movement of center of mass in the medial-lateral, anterior-posterior and trunk rotation directions...
May 13, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28526212/3d-deeply-supervised-network-for-automated-segmentation-of-volumetric-medical-images
#4
Qi Dou, Lequan Yu, Hao Chen, Yueming Jin, Xin Yang, Jing Qin, Pheng-Ann Heng
While deep convolutional neural networks (CNNs) have achieved remarkable success in 2D medical image segmentation, it is still a difficult task for CNNs to segment important organs or structures from 3D medical images owing to several mutually affected challenges, including the complicated anatomical environments in volumetric images, optimization difficulties of 3D networks and inadequacy of training samples. In this paper, we present a novel and efficient 3D fully convolutional network equipped with a 3D deep supervision mechanism to comprehensively address these challenges; we call it 3D DSN...
May 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28526155/ketorolac-oxymorphone-tapentadol-and-tramadol-a-comprehensive-review
#5
REVIEW
Nalini Vadivelu, Daniel Chang, Erik M Helander, Gregory J Bordelon, Alice Kai, Alan D Kaye, Dora Hsu, Daniel Bang, Inderjeet Julka
Pain remains a tremendous burden on patients and for the health care system, with uncontrolled pain being the leading cause of disability in this country. There are a variety of medications that can be used in the treatment of pain, including ketorolac, oxymorphone, tapentadol, and tramadol. Depending on the clinical situation, these drugs can be used as monotherapy or in conjunction with other types of medications in a multimodal approach. A strong appreciation of pharmacologic properties of these agents and potential side effects is warranted for clinicians...
June 2017: Anesthesiology Clinics
https://www.readbyqxmd.com/read/28525897/a-cellular-platform-for-the-evaluation-of-immune-checkpoint-molecules
#6
Sabrina Jutz, Annika Hennig, Wolfgang Paster, Ömer Asrak, Dejana Dijanovic, Florian Kellner, Winfried F Pickl, Johannes B Huppa, Judith Leitner, Peter Steinberger
Blockade of the T cell coinhibitory molecules CTLA-4 and PD-1 has clinical utility to strengthen T cell responses. In addition to these immune checkpoints an ever-growing number of molecules has been implicated in generating coinhibitory signals in T cells. However, investigating coinhibitory molecules in primary human cells is complicated by the restricted expression and promiscuity of both coinhibitory receptors and their ligands. Here we have evaluated the potential of fluorescence-based transcriptional reporters based on the human Jurkat T cell line in conjunction with engineered T cell stimulator cell lines for investigating coinhibitory pathways...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525648/the-role-of-omics-in-the-application-of-adverse-outcome-pathways-for-chemical-risk-assessment
#7
Erica K Brockmeier, Geoff Hodges, Thomas H Hutchinson, Emma Butler, Markus Hecker, Knut Erik Tollefsen, Natalia Garcia-Reyero, Peter Kille, Dörthe Becker, Kevin Chipman, John Colbourne, Timothy W Collette, Andrew Cossins, Mark Cronin, Peter Graystock, Steve Gutsell, Dries Knapen, Ioanna Katsiadaki, Anke Lange, Stuart Marshall, Stewart F Owen, Edward J Perkins, Stewart Plaistow, Anthony Schroeder, Daisy Taylor, Mark Viant, Gerald Ankley, Francesco Falciani
In conjunction with the second International Environmental Omics Symposium (iEOS) conference, held at the University of Liverpool (UK) in September 2014, a workshop was held to bring together experts in toxicology and regulatory science from academia, government and industry. The purpose of the workshop was to review the specific roles that high-content omics datasets (e.g., transcriptomics, metabolomics, lipidomics, and proteomics) can hold within the adverse outcome pathway (AOP) framework for supporting ecological and human health risk assessments...
May 19, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28525510/zika-virus-obstetric-and-pediatric-anesthesia-considerations
#8
Jacqueline L Tutiven, Benjamin T Pruden, James S Banks, Mario Stevenson, David J Birnbach
As of November 2016, the Florida Department of Health (FDH) and the Centers for Disease Control and Prevention have confirmed more than 4000 travel-related Zika virus (ZIKV) infections in the United States with >700 of those in Florida. There have been 139 cases of locally acquired infection, all occurring in Miami, Florida. Within the US territories (eg, Puerto Rico, US Virgin Islands), >30,000 cases of ZIKV infection have been reported. The projected number of individuals at risk for ZIKV infection in the Caribbean and Latin America approximates 5 million...
June 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28525415/effects-of-collagenase-digestion-and-stromal-vascular-fraction-supplementation-on-volume-retention-of-fat-grafts
#9
Jonathan B Olenczak, Scott A Seaman, Kant Y Lin, Angela Pineros-Fernandez, Catherine E Davis, Lisa S Salopek, Shayn M Peirce, Patrick S Cottler
OBJECTIVE: The use of autologous fat as a soft tissue filler has increased over the past decade in both reconstructive and aesthetic surgeries. Enhancement of autologous fat grafts with the addition of the stromal vascular fraction (SVF) has been reported to improve long-term volume retention. Stromal vascular fraction is most commonly isolated using enzymatic digestion, but it is unknown what effect the digestion process has on the adipocytes and SVF cells that comprise the graft. Some clinicians have reported use of enzymatically digested fat grafts to alter the physical properties of the tissue in specialized applications...
June 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28524907/breakthrough-cancer-pain-a-systematic-review-of-pharmacologic-management%C3%A2
#10
Jeannine M Brant, Barbara B Rodgers, Eva Gallagher, Thiruppavai Sundaramurthi
BACKGROUND: Breakthrough cancer pain (BtCP), defined as a transient exacerbation of pain that occurs in conjunction with well-controlled background pain, is a common and burdensome problem in patients with cancer.
. OBJECTIVES: The aim of this systematic review is to identify evidence-based pharmacologic modalities for adequate management of BtCP. 
. METHODS: PubMed and CINAHL® databases were searched to identify literature regarding pharmacologic strategies for BtCP published from January 2006 to June 2016...
June 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28524744/sphingosine-1-phosphate-signaling-in-bone-remodeling-multifaceted-roles-and-therapeutic-potential
#11
Anastasia Meshcheryakova, Diana Mechtcheriakova, Peter Pietschmann
Sphingolipids belong to a complex class of lipid molecules that are crucially involved in the regulation of important biological processes including proliferation, migration and apoptosis. Given the significant progress made in understanding the sphingolipid pathobiology of several diseases, sphingolipid-related checkpoints emerge as attractive targets. Recent data indicate the multifaceted contribution of the sphingolipid machinery to osteoclast - osteoblast crosstalk, representing one of the pivotal interactions underlying bone homeostasis...
May 19, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28524738/selexipag-a-selective-prostacyclin-receptor-agonist-in-pulmonary-arterial-hypertension-a-pharmacology-review
#12
Jesús Honorato Pérez
Pulmonary hypertension is defined by a mean pulmonary artery pressure ≥25 mm Hg at rest. Management of pulmonary arterial hypertension (PAH) includes specific drug therapy with calcium channel blockers in vasoreactive patients, or drugs approved for PAH in non-reactive patients that target the endothelin, nitric-oxide and prostacyclin pathways. Areas covered: The review covers receptor selectivity, pharmacokinetics, pharmacodynamics and adverse effects (AEs) of intravenous (IV) epoprostenol (synthetic prostacyclin); the prostacyclin analogs iloprost, beraprost, and treprostinil administered by IV, subcutaneous, inhaled or oral routes; and the oral selective prostacyclin receptor agonist selexipag...
May 19, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28524655/tunable-control-of-an-escherichia-coli-expression-system-for-the-overproduction-of-membrane-proteins-by-titrated-expression-of-a-mutant-lac-repressor
#13
Seong Keun Kim, Dae-Hee Lee, Oh Cheol Kim, Jihyun F Kim, Sung Ho Yoon
Most inducible expression systems suffer from growth defects, leaky basal induction, and inhomogeneous expression levels within a host cell population. These difficulties are most prominent with the overproduction of membrane proteins that are toxic to host cells. Here, we developed an Escherichia coli inducible expression system for membrane protein production based on titrated expression of a mutant lac repressor (mLacI). Performance of the mLacI inducible system was evaluated in conjunction with commonly used lac operator-based expression vectors using a T7 or tac promoter...
May 19, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28523859/glucose-6-phosphate-dehydrogenase-deficiency-induced-haemolysis-in-a-woman-with-newly-diagnosed-diabetes-after-normalization-of-hyperglycaemia
#14
F ALjishi, M ALDarwish
Glucose-6-phosphate dehydrogenase (G6PD) catalyses the initial step in the hexose monophosphate pathway that protects red blood cells against oxidative injury via the production of NADPH [1]. The exact association between diabetes and G6PD deficiency remains a matter of debate. People with G6PD deficiency can develop severe haemolytic anaemia in conjunction with new-onset diabetes, particularly within the setting of ketoacidosis. This phenomenon has been reported previously, but is uncommon [2-18]. This article is protected by copyright...
May 19, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28523741/comparative-membrane-proteomics-analyses-of-breast-cancer-cell-lines-to-understand-the-molecular-mechanism-of-breast-cancer-brain-metastasis
#15
Wenjing Peng, Yu Zhang, Rui Zhu, Yehia Mechref
Breast cancer is the leading type of cancer in women. Breast cancer brain metastasis is currently considered an issue of concern among breast cancer patients. Membrane proteins play important roles in breast cancer brain metastasis, involving cell adhesion and penetration of blood-brain barrier. To understand the mechanism of breast cancer brain metastasis, liquid chromatography-tandem mass spectrometry (LC-MS/MS) was employed in conjunction with enrichment of membrane proteins to analyze the proteomes from 5 different breast cancer and a brain cancer cell lines...
May 19, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28523549/dna-methylation-in-schizophrenia
#16
Lotta-Katrin Pries, Sinan Gülöksüz, Gunter Kenis
Schizophrenia is a highly heritable psychiatric condition that displays a complex phenotype. A multitude of genetic susceptibility loci have now been identified, but these fail to explain the high heritability estimates of schizophrenia. In addition, epidemiologically relevant environmental risk factors for schizophrenia may lead to permanent changes in brain function. In conjunction with genetic liability, these environmental risk factors-likely through epigenetic mechanisms-may give rise to schizophrenia, a clinical syndrome characterized by florid psychotic symptoms and moderate to severe cognitive impairment...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28523524/increased-red-cell-distribution-width-levels-in-children-with-seasonal-allergic-conjunctivitis
#17
Bengi Ece Kurtul, Emrah Utku Kabatas, Songul Deniz Boybeyi, Ayla Akca Caglar, Pinar Altiaylik Ozer
PURPOSE: Seasonal allergic conjunctivitis (SAC) is an inflammatory disease of the conjunctiva. Red cell distribution width (RDW) is a widely accepted inflammatory marker. We aimed to investigate whether RDW level is associated with the development of SAC in pediatric population. METHODS: The present study consisted of 90 subjects (45 children with SAC and 45 age- and sex-matched healthy children). The demographic findings, complete blood count parameters including RDW and laboratory parameters, were evaluated...
May 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28523438/reversible-splenial-lesions-presenting-in-conjunction-with-febrile-illness-a-case-series-and-literature-review
#18
David Lin, Matthew Rheinboldt
Transient restricted diffusion and increased T2 signal intensity within the splenium of the corpus callosum is an increasingly recognized albeit uncommon imaging feature in the setting of acute encephalitis and antecedent viral illness. This review will discuss three index cases obtained from an institutional databank. Additionally, the current understanding of the underlying neurophysiologic pathogenesis will be discussed together with differential clinical and imaging diagnostic considerations, treatment options, and outcome metrics...
May 18, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28523113/human-serum-albumin-delivered-au-pet3-is-a-potent-inhibitor-of-t-cell-proliferation
#19
Tyler C Dean, Mu Yang, Mingyong Liu, Jason M Grayson, Anthony W DeMartino, Cynthia S Day, Jingyun Lee, Cristina M Furdui, Ulrich Bierbach
Using a modular library format in conjunction with cell viability (MTS) and flow cytometry assays, 90 cationic complexes [AuPL] (n+) (P = phosphine ligand; L = thiourea derivative or chloride) were studied for their antiproliferative activity in CD8(+) T lymphocyte cells. The activity of the compounds correlates with the steric bulk of the phosphine ligands. Thiourea serves as a leaving group that is readily replaced by cysteine thiol (NMR, ESI-MS). Taking advantage of selective thiourea ligand exchange, the fragments [Au(PEt3)](+) and [Au(JohnPhos)](+) (JohnPhos = 1,1'-biphenyl-2-yl)di-tert-butylphosphine) in compounds 1 and 2 were transferred to recombinant human serum albumin (rHSA)...
May 11, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28523088/treatment-of-a-large-traumatic-encephalocele-with-titanium-mesh
#20
Alan Motta do Canto, Manuela Monteiro Pinotti, Fernando Alves Maciel, Alexandre Bossi Todeschini, Guilherme Brasileiro Aguiar, Ronaldo Rodrigues de Freitas
Encephalocele is defined as protrusion of cranial contents beyond the normal confines of the skull. Although most encephalocele cases have a congenital etiology, fractures of the skull base can cause traumatic encephalocele. In most encephalocele cases, the bone defect presents reduced dimensions and the endoscopic treatment is generally performed to reconstruct the area using mucosal and/or fat grafts. This article sought to report on a rare case of traumatic encephalocele associated with an extensive defect of the anterior skull base...
June 2017: Craniomaxillofacial Trauma & Reconstruction
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