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https://www.readbyqxmd.com/read/29145479/new-analytical-methodology-for-analysing-s-iv-species-at-low-ph-solutions-by-one-stage-titration-method-bichromatometry-with-a-clear-colour-change-could-potentially-replace-the-state-of-art-method-iodometry-at-low-ph-analysis-due-higher-accuracy
#1
Annukka Santasalo-Aarnio, Istvan Galfi, Jorma Virtanen, Michael M Gasik
A new, faster and more reliable analytical methodology for S(IV) species analysis at low pH solutions by bichromatometry is proposed. For decades the state of the art methodology has been iodometry that is still well justified method for neutral solutions, thus at low pH media possess various side reactions increasing inaccuracy. In contrast, the new methodology has no side reactions at low pH media, requires only one titration step and provides a clear color change if S(IV) species are present in the solution...
2017: PloS One
https://www.readbyqxmd.com/read/29145002/different-transport-behaviors-of-bacillus-subtilis-cells-and-spores-in-saturated-porous-media-implications-for-contamination-risks-associated-with-bacterial-sporulation-in-aquifer
#2
Qi Li, Jiakuan Yang, Wei Fan, Dandan Zhou, Xiaoyu Wang, Leilei Zhang, Mingxin Huo, John C Crittenden
In this study, we compared the transport characteristics of Bacillus subtilis cells and their spores in saturated porous media. Both the bacteria cells and spores were readily transported under lower ionic strengths (IS) (1mM), featuring high mass recovery rates (>75%). The bacteria cells recovery rate declined to 58.05% when the IS increased to 100mM; but the spores recovery rate remained at 74.54%. Spores appear to be more mobile than bacterial cells over wide range of IS. Surface properties and breakthrough curves analysis of the two bio-particles (cells and spores) indicated that attachment, straining and blocking mechanisms contribute differently to deposition processes...
November 11, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29138892/-partial-and-complete-joint-transplantation-with-fresh-osteochondral-allografts-the-flocsat-concept
#3
REVIEW
C Krettek, J-D Clausen, N Bruns, C Neunaber
Cartilage defects in adult patients do not heal well. Fresh osteochondral allograft (OCA) transplantation is based on mature, living, mechanically sound hyaline cartilage attached to a bone interface, which is brought into an osteochondral defect, where it becomes osseointegrated. According to current knowledge, intact hyaline cartilage tissue is immune privileged and does not, in contrast to bone, meniscus or ligaments, cause an immune reaction. The technique has the unique advantage of transplanting viable, mature and mechanically stable hyaline cartilage into the affected area...
November 14, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29137904/implications-of-iodinated-contrast-media-extravasation-in-the-emergency-department
#4
Jonathan D Sonis, Ravi V Gottumukkala, McKinley Glover, Brian J Yun, Benjamin A White, Mannudeep K Kalra, Alexi Otrakji, Ali S Raja, Anand M Prabhakar
PURPOSE: To characterize the management, outcomes, and emergency department (ED) length of stay (LOS) following iodinated contrast media extravasation events in the ED. METHODS: All ED patients who developed iodinated contrast media extravasation following contrast-enhanced CT (CECT) from October 2007-December 2016 were retrospectively identified. Medical records were reviewed and management, complications, frequency of surgical consultation, and ED LOS were quantified using descriptive statistics...
November 7, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29136144/antioxidants-improve-ivf-outcome-and-subsequent-embryo-development-in-the-mouse
#5
T Truong, D K Gardner
STUDY QUESTION: What is the effect of a combination of three antioxidants (Acetyl-L-Carnitine, N-Acetyl-L-Cysteine and α-Lipoic Acid), present in IVF medium during mouse oocyte and sperm collection, on fertilization and subsequent IVF embryo development? SUMMARY ANSWER: A combination of antioxidants resulted in faster developmental times from the 2-cell stage through to expanded blastocyst stage, accompanied by a significant increase in blastocyst cell number and a reduction of intracellular hydrogen peroxide (H2O2) levels...
November 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29134458/animal-cell-expression-systems
#6
M Butler, Ing U Reichl
The glycan profile of therapeutic recombinant proteins such as monoclonal antibodies is a critical quality attribute, which affects the efficacy of the final product. The cellular glycosylation process during protein expression is dependent upon a number of factors such as the availability of substrates in the media, the intracellular content of nucleotide sugars, and the enzyme repertoire of the host cells. In order to control the variability of glycosylation it is important to understand the critical process parameters and their acceptable range of values to enable reproducible production of proteins with a predetermined glycan profile providing the desired biological function or therapeutic effect...
October 3, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/29134367/imaging-of-cardiovascular-disease-in-pregnancy-and-the-peripartum-period
#7
REVIEW
Theodore Pierce, Meline Hovnanian, Sandeep Hedgire, Brian Ghoshhajra
Cardiovascular disease is an important cause of morbidity and mortality during pregnancy and the postpartum period. During pregnancy, the cardiovascular system undergoes extensive hemodynamic, hormonal, and microstructural changes which may exacerbate a preexisting underlying cardiovascular condition or predispose to cardiovascular complications not typically seen in young healthy women. Such conditions include spontaneous coronary artery dissection, atherosclerotic coronary artery disease, and peripartum cardiomyopathy...
November 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29132044/exposure-to-thin-ideal-media-affect-most-but-not-all-women-results-from-the-perceived-effects-of-media-exposure-scale-and-open-ended-responses
#8
David A Frederick, Elizabeth A Daniels, Morgan E Bates, Tracy L Tylka
Findings conflict as to whether thin-ideal media affect women's body satisfaction. Meta-analyses of experimental studies reveal small or null effects, but many women endorse appearance-related media pressure in surveys. Using a novel approach, two samples of women (Ns=656, 770) were exposed to bikini models, fashion models, or control conditions and reported the effects of the images their body image. Many women reported the fashion/bikini models made them feel worse about their stomachs (57%, 64%), weight (50%, 56%), waist (50%, 56%), overall appearance (50%, 56%), muscle tone (46%, 52%), legs (45%, 48%), thighs (40%, 49%), buttocks (40%, 43%), and hips (40%, 46%)...
November 10, 2017: Body Image
https://www.readbyqxmd.com/read/29130692/uptake-of-long-protein-polyelectrolyte-nanotubes-by-dendritic-cells
#9
Diana G Ramírez-Wong, Saghi Saghazadeh, Simon Van Herck, Bruno G De Geest, Alain M Jonas, Sophie Demoustier-Champagne
Anisotropic nanostructures, such as nanotubes, incorporating bioactive molecules present interesting features for application as drug delivery carriers. Here, we present the synthesis of layer-by-layer (LbL) nanotubes including protein (ovalbumin) layers and go from simple to more complex synergetic combinations of synthetic and natural polyelectrolytes, leading to structures with tunable properties. The rigidity in organic and aqueous media, the stability in buffer solution and the uptake of different LbL tubes by dendritic cells (DCs) are analyzed to contrast size and chemistry...
November 13, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29130330/psychometric-validation-of-the-persian-bergen-social-media-addiction-scale-using-classic-test-theory-and-rasch-models
#10
Chung-Ying Lin, Anders Broström, Per Nilsen, Mark D Griffiths, Amir H Pakpour
Background and aims The Bergen Social Media Addiction Scale (BSMAS), a six-item self-report scale that is a brief and effective psychometric instrument for assessing at-risk social media addiction on the Internet. However, its psychometric properties in Persian have never been examined and no studies have applied Rasch analysis for the psychometric testing. This study aimed to verify the construct validity of the Persian BSMAS using confirmatory factor analysis (CFA) and Rasch models among 2,676 Iranian adolescents...
November 13, 2017: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/29125633/usability-of-functional-mri-in-clinical-studies-for-fast-and-reliable-assessment-of-renal-perfusion-and-quantification-of-hemodynamic-effects-on-the-kidney
#11
Tobias Getzin, Marcus May, Martina Schmidbauer, Marcel Gutberlet, Petros Martirosian, Reinhard Oertel, Frank Wacker, Christoph Schindler, Katja Hueper
The purpose of this study was to evaluate contrast-media-free arterial spin labeling, a technique of functional magnetic resonance imaging (MRI), for assessment of kidney perfusion in a clinical study. We examined renal perfusion by arterial spin labeling in 15 healthy adults using a clinical 1.5-T MRI system, twice under baseline conditions and 60 minutes after a single oral dose of 50 mg captopril. Data evaluation included assessment of interstudy and interrater reproducibility in addition to the pharmacological effect of captopril on kidney perfusion and a sample size calculation for potential application of the technique in pharmacological intervention studies...
November 10, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29123405/contrast-media-induced-nephropathy-how-has-italy-contributed-in-the-past-30-years-a-systematic-review
#12
REVIEW
Maurizio Sessa, Claudia Rossi, Annamaria Mascolo, Cristina Scavone, Gabriella di Mauro, Roberto Grassi, Liberata Sportiello, Salvatore Cappabianca, Concetta Rafaniello
Background and objective: The use of contrast media in Italy has exponentially increased in the past 3 decades. However, it is unknown whether there has been an increase in clinical research evaluating the risks associated with contrast media usage, especially regarding contrast-induced nephropathy. To fill this gap in knowledge, we performed a systematic review. Study eligibility criteria: Meta-analyses, observational studies, and clinical trials assessing contrast media-induced nephropathy as the safety outcome, in which at least one author was affiliated with an Italian university/health care structure, were eligble...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29121078/indocyanine-green-fluorescence-in-second-near-infrared-nir-ii-window
#13
Zbigniew Starosolski, Rohan Bhavane, Ketan B Ghaghada, Sanjeev A Vasudevan, Alexander Kaay, Ananth Annapragada
Indocyanine green (ICG), a FDA approved near infrared (NIR) fluorescent agent, is used in the clinic for a variety of applications including lymphangiography, intra-operative lymph node identification, tumor imaging, superficial vascular imaging, and marking ischemic tissues. These applications operate in the so-called "NIR-I" window (700-900 nm). Recently, imaging in the "NIR-II" window (1000-1700 nm) has attracted attention since, at longer wavelengths, photon absorption, and scattering effects by tissue components are reduced, making it possible to image deeper into the underlying tissue...
2017: PloS One
https://www.readbyqxmd.com/read/29120309/comparing-insider-and-outsider-news-coverage-of-the-2014-ebola-outbreak
#14
Brittany Humphries, Martha Radice, Sophie Lauzier
OBJECTIVES: Information provided by news media during an infectious disease outbreak can affect the actions taken to safeguard public health. There has been little evaluation of how the content of news published during an outbreak varies by location of the news outlet. This study analyzes coverage of the 2014 Ebola outbreak by one news outlet operating within a country affected by the outbreak and one country not directly affected. METHODS: A qualitative content analysis was conducted of articles published in two national news outlets, The Globe and Mail (Canada) and the Vanguard (Nigeria), between January 1 and December 31, 2014...
November 9, 2017: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
https://www.readbyqxmd.com/read/29117715/iso-osmolar-contrast-media-and-adverse-renal-and-cardiac-events-after-percutaneous-cardiovascular-intervention
#15
Peter A McCullough, Guy David, Thomas M Todoran, Emmanouil S Brilakis, Michael P Ryan, Candace Gunnarsson
AIM: To assess the relationship between type of contrast media (CM), iso-osmolar contrast media (IOCM) or low-osmolar contrast media (LOCM), and major adverse renal and cardiovascular events (MARCE). MATERIALS & METHODS: Coronary or peripheral angioplasty visits were stratified into CM cohorts: IOCM or LOCM. Multivariable regression analysis used hospital fixed effects to assess the relationship between MARCE events and type of CM. RESULTS: Among 333,533 visits (357 hospitals), the incidence of MARCE was 7...
November 9, 2017: Journal of Comparative Effectiveness Research
https://www.readbyqxmd.com/read/29113753/best-practices-for-online-canadian-prenatal-health-promotion-a-public-health-approach
#16
Rebecca A Chedid, Rowan M Terrell, Karen P Phillips
BACKGROUND: Prenatal health promotion provides information regarding pregnancy risks, protective behaviours and clinical and community resources. Typically, women obtain prenatal health information from health care providers, prenatal classes, peers/family, media and increasingly, Internet sites and mobile apps. Barriers to prenatal health promotion and related services include language, rural/remote location, citizenship and disability. Online public health platforms represent the capacity to reach underserved women and can be customised to address the needs of a heterogeneous population of pregnant women...
November 4, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/29112930/how-the-interaction-of-pvp-stabilized-ag-nanoparticles-with-models-of-cellular-membranes-at-the-air-water-interface-is-modulated-by-the-monolayer-composition
#17
Rafael Leonardo Cruz Gomes da Silva, Heloiza Fernanda Oliveira da Silva, Luiz Henrique da Silva Gasparotto, Luciano Caseli
The antimicrobial property of silver nanoparticles (AgNPs) is believed to be associated to their interaction with biointerfaces such as microbial cell membranes, encouraging research on the identification of membrane sites capable of AgNPs binding. Although significant progress has been made in that regard, the exact molecular mechanism of action is yet to be fully understood. In this study, AgNPs dispersed in aqueous media and stabilized with polyvinylpyrrolidone were incorporated in Langmuir monolayers of selected lipids that served as cell membrane models...
October 26, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29112105/secretome-conveys-the-protective-effects-of-ascs-therapeutic-potential-following-hemorrhagic-shock
#18
Mostafa Ashmwe, Carina Penzenstadler, Arian Bahrami, Anton Klotz, Mohammad Jafarmadar, Asmita Banerjee, Susanne Wolbank, Heinz Redl, Soheyl Bahrami
OBJECTIVES: We tested whether resuscitation supplemented with a) rat adipose-derived stem cells (ASCs) or b) secretome (conditioned media) of ASCs can ameliorate inflammation, cell/organ injury, and/or improve outcome after Hemorrhagic traumatic shock (HTS). INTERVENTIONS: Rats were subjected to HTS and a resuscitation protocol that mimics pre-hospital restrictive reperfusion followed by an adequate reperfusion phase. 20 minutes into the restrictive reperfusion, animals received an intravenous bolus of 2x10 cells (ASC group) or the secretome produced by 2x10 ASCs/24 h (ASC-Secretome group)...
November 3, 2017: Shock
https://www.readbyqxmd.com/read/29110904/retention-of-gadolinium-compounds-used-in-magnetic-resonance-imaging-a-critical-review-and-the-recommendations-of-regulatory-agencies
#19
L Martí-Bonmatí, E Martí-Bonmatí
The Spanish Agency for Drugs and Healthcare Products (AEMPS), based on the recommendations of the European Committee for Risk Assessment in Pharmacovigilance, established on 13 March 2017 that linear gadolinium-based MR contrast media, such as MultiHance, Omniscan, Magnevist (currently not marketed) and Optimark (no longer marketed in Spain), the clinical benefits do not outweigh the potential risks derived from their use. AEMPS recommends to suspend its marketing for general use based on the retention of these compounds in the brain...
October 27, 2017: Radiología
https://www.readbyqxmd.com/read/29110056/efficacy-and-safety-of-balloon-occluded-retrograde-transvenous-obliteration-of-gastric-varices-with-lauromacrogol-foam-sclerotherapy-initial-experience
#20
Xuefeng Luo, Huaiyuan Ma, Jiaze Yu, Ying Zhao, Xiaoze Wang, Li Yang
PURPOSE: Balloon-occluded retrograde transvenous obliteration (BRTO) is a widely-accepted treatment for gastric varices (GVs). The purpose of this study was to evaluate the efficacy and safety of BRTO with lauromacrogol foam sclerotherapy. MATERIALS AND METHODS: Between May 2014 and June 2015, 32 patients were treated with lauromacrogol foam. Lauromacrogol foam was made using a combination of agents, with a 2:1:1 ratio of room air: lauromacrogol: contrast media...
November 6, 2017: Abdominal Radiology
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