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https://www.readbyqxmd.com/read/28336382/migration-and-infectious-diseases
#1
REVIEW
Francesco Castelli, Giorgia Sulis
BACKGROUND: Infectious diseases still represent an important cause of morbidity and mortality among foreign-born individuals. The rising migration flows towards Europe throughout the last few years are raising renewed concerns about management issues and the potential associated risk for the native population. AIMS: To discuss the health implications and challenges related to the four phases of migration, from first arrival to stable resettlement. SOURCES: Scientific literature and relevant statistical reports...
March 20, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28332097/novel-and-advanced-techniques-for-complex-ivc-filter-retrieval
#2
REVIEW
Dania Daye, T Gregory Walker
Inferior vena cava (IVC) filter placement is indicated for the treatment of venous thromboembolism (VTE) in patients with a contraindication to or a failure of anticoagulation. With the advent of retrievable IVC filters and their ease of placement, an increasing number of such filters are being inserted for prophylaxis in patients at high risk for VTE. Available data show that only a small number of these filters are retrieved within the recommended period, if at all, prompting the FDA to issue a statement on the need for their timely removal...
April 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28324800/breast-textiloma-an-unending-medico-legal-issue-about-a-case-report
#3
Marwa Boussaid, Med Amin Mesrati, Rania Jouirou, Nouha Abdejlil, Abdelfeteh Zakhama, Ali Chadly, Abir Aissaoui
INTRODUCTION: Textiloma is a mass composed of retained surgical textile foreign body. It is a rare iatrogenic complication that can engage the doctor's responsibility. The aim of this manuscript is to report an unusual case of breast Textiloma mimicking a recurrent tumor and to highlight its medico-legal implications. PRESENTATION OF CASE: A 47-year-old lady, without past medical history, was diagnosed with a breast infiltring intraductal carcinoma. She was treated with mastectomy...
March 7, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28315607/correcting-bias-due-to-missing-stage-data-in-the-non-parametric-estimation-of-stage-specific-net-survival-for-colorectal-cancer-using-multiple-imputation
#4
Milena Falcaro, James R Carpenter
BACKGROUND: Population-based net survival by tumour stage at diagnosis is a key measure in cancer surveillance. Unfortunately, data on tumour stage are often missing for a non-negligible proportion of patients and the mechanism giving rise to the missingness is usually anything but completely at random. In this setting, restricting analysis to the subset of complete records gives typically biased results. Multiple imputation is a promising practical approach to the issues raised by the missing data, but its use in conjunction with the Pohar-Perme method for estimating net survival has not been formally evaluated...
March 15, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28314597/co-enrolment-of-participants-into-multiple-cancer-trials-benefits-and-challenges
#5
F H Cafferty, C Coyle, S Rowley, L Berkman, M MacKensie, R E Langley
Opportunities to enter patients into more than one clinical trial are not routinely considered in cancer research and experiences with co-enrolment are rarely reported. Potential benefits of allowing appropriate co-enrolment have been identified in other settings but there is a lack of evidence base or guidance to inform these decisions in oncology. Here, we discuss the benefits and challenges associated with co-enrolment based on experiences in the Add-Aspirin trial - a large, multicentre trial recruiting across a number of tumour types, where opportunities to co-enrol patients have been proactively explored and managed...
March 14, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28289261/growth-rate-transmission-mode-and-virulence-in-human-pathogens
#6
Helen C Leggett, Charlie K Cornwallis, Angus Buckling, Stuart A West
The harm that pathogens cause to hosts during infection, termed virulence, varies across species from negligible to a high likelihood of rapid death. Classic theory for the evolution of virulence is based on a trade-off between pathogen growth, transmission and host survival, which predicts that higher within-host growth causes increased transmission and higher virulence. However, using data from 61 human pathogens, we found the opposite correlation to the expected positive correlation between pathogen growth rate and virulence...
May 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28282587/feasibility-of-magnetic-marker-localisation-for-non-palpable-breast-cancer
#7
B Schermers, J A van der Hage, C E Loo, M T F D Vrancken Peeters, H A O Winter-Warnars, F van Duijnhoven, B Ten Haken, S H Muller, T J M Ruers
OBJECTIVES: Accurate tumour localisation is essential for breast-conserving surgery of non-palpable tumours. Current localisation technologies are associated with disadvantages such as logistical challenges and migration issues (wire guided localisation) or legislative complexities and high administrative burden (radioactive localisation). We present MAgnetic MArker LOCalisation (MaMaLoc), a novel technology that aims to overcome these disadvantages using a magnetic marker and a magnetic detection probe...
March 7, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28256130/general-signal-amplification-strategy-for-nonfaradic-impedimetric-sensing-trastuzumab-detection-employing-a-peptide-immunosensor
#8
Juan Liu, Mohammad Muhsin Chisti, Xiangqun Zeng
A label-free and reagent-free peptide mimotope capacitive biosensor has been developed for cancer drug (trastuzumab) quantification based on nonfaradic readout. The low sensitivity issue of capacitive biosensors was overcome with two innovations: peptide mimotope mixed self-assembled monolayer (SAM) biointerface and dilution of the analysis buffer. Signal amplification was achieved through dilution of phosphate-buffered saline (PBS) to tune Cdl to dominate the overall capacitance change upon target binding, which contribution is often negligible without dilution...
March 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28249213/ligand-effects-on-nitrate-reduction-by-zero-valent-iron-role-of-surface-complexation
#9
Xiaojie Song, Zhihao Chen, Xiaomeng Wang, Shujuan Zhang
Surface passivation is a key limiting factor in the application of zero-valent iron (ZVI) for water remediation. Addition of ligands is a useful approach to overcome this issue. In this work, a small amount of acetylacetone (AA) (0.5 mM) was found highly efficient to enhance the reduction of nitrate by ZVI at near neutral conditions (pH 6.0) with the formation of considerable black coating on ZVI. At an initial nitrate concentration of 20 mg N/L, the pseudo first-order reduction rate constant of nitrate in the ZVI-AA-NO3(-) system was 0...
February 20, 2017: Water Research
https://www.readbyqxmd.com/read/28224796/multi-chlorine-substituted-self-assembled-molecules-as-anode-interlayers-tuning-surface-properties-and-humidity-stability-for-organic-photovoltaics
#10
Xiaofang Cheng, Liqiang Huang, Lifu Zhang, Qingyun Ai, Lie Chen, Yiwang Chen
Self-assembled small molecules (SASMs) are effective materials to improve the interfacial properties between a metal/metal oxide and the overlying organic layer. In this work, surface modification of indium tin oxide (ITO) electrode by a series of Cl-containing SASMs has been exploited to control the surface properties of ITO and device performance for organic photovoltaics. Depending on the position and degrees of chlorination for SASMs, we could precisely manipulate the work function of the ITO electrode, and chemisorption of SASMs on ITO as well...
March 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28220003/third-harmonic-generation-from-mie-type-resonances-of-isolated-all-dielectric-nanoparticles
#11
Elizaveta V Melik-Gaykazyan, Maxim R Shcherbakov, Alexander S Shorokhov, Isabelle Staude, Igal Brener, Dragomir N Neshev, Yuri S Kivshar, Andrey A Fedyanin
Subwavelength silicon nanoparticles are known to support strongly localized Mie-type modes, including those with resonant electric and magnetic dipolar polarizabilities. Here we compare experimentally the efficiency of the third-harmonic generation from isolated silicon nanodiscs for resonant excitation at the two types of dipolar resonances. Using nonlinear spectroscopy, we observe that the magnetic dipolar mode yields more efficient third-harmonic radiation in contrast to the electric dipolar (ED) mode. This is further supported by full-wave numerical simulations, where the volume-integrated local fields and the directly simulated nonlinear response are shown to be negligible at the ED resonance compared with the magnetic one...
March 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28199124/tempo-spatial-activation-of-sequential-quadruple-stimuli-for-high-gene-expression-of-polymeric-gene-nanocomplexes
#12
Hana Cho, Young-Woo Cho, Sun-Woong Kang, Mi-Kyoung Kwak, Kang Moo Huh, You Han Bae, Han Chang Kang
The clinical application of intracellular gene delivery via nanosized carriers is hindered by intracellular multistep barriers that limit high levels of gene expression. To solve these issues, four different intracellular or external stimuli that can efficiently activate a gene carrier, a gene, or a photosensitizer (pheophorbide A [PhA]) were assessed in this study. The designed nanosized polymeric gene complexes were composed of PhA-loaded thiol-degradable polycation (PhA@RPC) and cytomegalovirus (CMV) promoter-equipped pDNA...
February 23, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28197854/mitochondrial-complex-i-activity-is-conditioned-by-supercomplex-i-iii2-iv-assembly-in-brain-cells-relevance-for-parkinson-s-disease
#13
Irene Lopez-Fabuel, Monica Resch-Beusher, Monica Carabias-Carrasco, Angeles Almeida, Juan P Bolaños
The assembly of complex I (CI) with complexes III (CIII) and IV (CIV) of the mitochondrial respiratory chain (MRC) to configure I-III- or I-III-IV-containing supercomplexes (SCs) regulates mitochondrial energy efficiency and reactive oxygen species (mROS) production. However, whether the occurrence of SCs impacts on CI specific activity remains unknown to our knowledge. To investigate this issue, here we determined CI activity in primary neurons and astrocytes, cultured under identical antioxidants-free medium, from two mouse strains (C57Bl/6 and CBA) and Wistar rat, i...
February 14, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28187381/inherently-fluorescent-polystyrene-microspheres-for-coating-sensing-and-cellular-imaging
#14
Jian-Bo Qu, Yu-Liang Xu, Yu Liu, Yanan Wang, Yuanhong Sui, Jian-Guo Liu, Xiaojuan Wang
Commercially available polystyrene (PS) fluorescent microspheres are widely used in biological field for tracing, in vivo imaging and calibration of flow cytometry, among other applications. However, these particles do suffer from some drawbacks such as the leakage and photobleaching of organic dyes within them. In the present study, inherently fluorescent properties of PS based microspheres have been explored for the first time. Here we find that a simple chloromethylation reaction endows the polystyrene particles with inherent fluorescence without any subsequent conjugation of an external fluorophore...
April 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28141563/teaching-for-reducing-diagnostic-errors
#15
Devendra Mishra, Piyush Gupta, Tejinder Singh
Diagnostic errors, constituted by a missed, wrong, or delayed diagnosis detected later by additional tests or findings, are one of the most vexing issues in medicine. They are one of the commonest causes of patient- harm and also medical negligence claims. Although a variety of constructs have been proposed to explain diagnostic errors, the complex interplay of cognitive- and system-factors that underlie these errors is rarely clear to the clinicians. In this write-up, we discuss the reasons for diagnostic errors and how medical students can be trained to avoid such errors...
January 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28131944/a-novel-injectable-tissue-adhesive-based-on-oxidized-dextran-and-chitosan
#16
Biji Balakrishnan, Dawlee Soman, Umashanker Payanam, Alexandre Laurent, Denis Labarre, Athipettah Jayakrishnan
A surgical adhesive that can be used in different surgical situations with or without sutures is a surgeons' dream and yet none has been able to fulfill many such demanding requirements. It was therefore a major challenge to develop an adhesive biomaterial that stops bleeding and bond tissues well, which at the same time is non-toxic, biocompatible and yet biodegradable, economically viable and appealing to the surgeon in terms of the simplicity of application in complex surgical situations. With this aim, we developed an in situ setting adhesive based on biopolymers such as chitosan and dextran...
January 25, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28129045/emerging-clinical-benefits-of-new-generation-fat-emulsions-in-preterm-neonates
#17
Gregory Guthrie, Muralidhar Premkumar, Douglas G Burrin
Soybean oil-based intravenous fat emulsions (IVFEs) have been the predominant parenteral nutrition IVFE used in the United States for neonates over the past 45 years. Even though this emulsion has proven useful in supplying infants with energy for growth and essential fatty acids, there have been concerns over its composition in the development of several morbidities, ranging from sepsis to liver disease, bronchopulmonary dysplasia, and impaired neurodevelopment and growth. The exact mechanisms that drive these morbidities in preterm infants are multifactorial, but potential contributors include high omega-6 (n-6) fatty acid composition, low docosahexaenoic acid and antioxidant supplementation, and the presence of potentially harmful nonnutritive components (eg, phytosterols)...
January 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28126613/centrifuge-separation-effect-on-bacterial-indicator-reduction-in-dairy-manure
#18
Zong Liu, Zachary S Carroll, Sharon C Long, Aicardo Roa-Espinosa, Troy Runge
Centrifugation is a commonly applied separation method for manure processing on large farms to separate solids and nutrients. Pathogen reduction is also an important consideration for managing manure. Appropriate treatment reduces risks from pathogen exposure when manure is used as soil amendments or the processed liquid stream is recycled to flush the barn. This study investigated the effects of centrifugation and polymer addition on bacterial indicator removal from the liquid fraction of manure slurries. Farm samples were taken from a manure centrifuge processing system...
January 23, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28116926/patient-reported-outcomes-with-direct-acting-antivirals-for-the-treatment-of-chronic-hepatitis-c-current-knowledge-and-outstanding-issues
#19
Fabienne Marcellin, Perrine Roux, Camelia Protopopescu, Martin Duracinsky, Bruno Spire, Maria Patrizia Carrieri
Patient-reported outcomes (PROs) play a key role in the evaluation of direct-acting antivirals (DAA) for the treatment of chronic hepatitis C (CHC). The main PROs of particular interest in CHC include quality of life (QoL), fatigue and its functional repercussions, work productivity, adherence to treatment, and risk behaviors. Areas covered: This study summarizes the body of knowledge regarding PROs in CHC with DAA-based therapy. Outstanding related issues are presented and discussed. Expert commentary: Current knowledge on PROs with CHC mainly relies on clinical trial data...
March 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28110454/tackling-the-salinity-pollution-nexus-in-coastal-aquifers-from-arid-regions-using-nitrate-and-boron-isotopes
#20
V Re, E Sacchi
Salinization and nitrate pollution are generally ascertained as the main issues affecting coastal aquifers worldwide. In arid zones, where agricultural activities also result in soil salinization, both phenomena tend to co-exist and synergically contribute to alter groundwater quality, with severe negative impacts on human populations and natural ecosystems' wellbeing. It becomes therefore necessary to understand if and to what extent integrated hydrogeochemical tools can help in distinguishing among possible different salinization and nitrate contamination origins, in order to provide adequate science-based support to local development and environmental protection...
January 22, 2017: Environmental Science and Pollution Research International
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