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https://www.readbyqxmd.com/read/27933740/fine-needle-aspiration-in-the-diagnosis-and-classification-of-hepatoblastoma-analysis-of-21-new-cases
#1
Tatjana Vlajnic, Hervé J Brisse, Isabelle Aerts, Paul Fréneaux, Cécile Cellier, Monique Fabre, Jerzy Klijanienko
BACKGROUND: Diagnosis of hepatoblastoma (HBL) is based on characteristic clinical and radiological presentation, young age and marked elevation of serum α-fetoprotein (aFP). Fine needle aspiration (FNA) technique is successfully used in the diagnosis of hepatoblastoma. To evaluate the value of FNA in the diagnosis and subtyping of HBL, we report our experience correlated to histological sections (core needle biopsy, CNB). METHODS: From 1991 to 2015, 21 cases from 20 patients were cytologically diagnosed as HBL...
December 9, 2016: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/27933733/mannich-bases-of-1-2-4-triazole-3-thione-containing-adamantane-moiety-synthesis-preliminary-anticancer-evaluation-and-molecular-modeling-studies
#2
Milorad Z Milošev, Katarina Jakovljević, Milan D Joksović, Tatjana Stanojković, Ivana Z Matić, Milka Perović, Vesna Tešić, Selma Kanazir, Milan Mladenović, Marko V Rodić, Vukadin M Leovac, Snežana Trifunović, Violeta Marković
A series of 18 novel N-Mannich bases derived from 5-adamantyl-1,2,4-triazole-3-thione was synthesized and characterized using NMR spectroscopy and X-ray diffraction technique. All derivatives were evaluated for their anticancer potential against four human cancer cell lines. Several tested compounds exerted good cytotoxic activities on K562 and HL-60 cell lines, along with pronounced selectivity, showing lower cytotoxicity against normal fibroblasts MRC-5 compared to cancer cells. The effects of compounds 5b, 5e and 5j on the cell cycle were investigated by flow cytometric analysis...
December 9, 2016: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/27933719/depth-profiling-cross-linked-poly-methyl-methacrylate-films-a-tof-sims-approach
#3
Soheila Naderi-Gohar, Kevin M H Huang, Yiliang Wu, Woon Ming Lau, Heng-Yong Nie
RATIONALE: In order to determine the degree of cross-linking on the surface and its variations in a nanometer-scale depth of organic materials, we developed an approach based on time-of-flight secondary ion mass spectrometry (TOF-SIMS), which provides rich chemical information in the form of fragment ions. TOF-SIMS is extremely surface sensitive and capable of depth profiling with the use of a sputter ion beam to remove controllable amounts of substance. METHODS: Poly(methyl methacrylate) (PMMA) films spin-coated on a Si substrate were cross-linked using a recently developed, surface sensitive, hyperthermal hydrogen projectile bombardment technique...
December 9, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27933684/enhancement-of-ag-based-plasmonic-photocatalysis-in-the-hydrogen-production-from-ammonia-borane-by-the-assist-of-single-site-ti-oxide-moiety-within-the-silica-framework
#4
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Ag nanoparticles (NPs) have gained great attention owing to their interesting plasmonic properties showing efficient catalysis under visible light irradiation. In this study, Ag-based plasmonic catalyst supported on the mesoporous silica involving isolated and tetrahedrally coordinated single-site Ti-oxide moieties, Ag/Ti-SBA-15, has been designed with the purpose of utilizing the broad spectrum range of solar energy. The Ti-SBA-15 support allows the deposition of small Ag NPs with a narrow size distribution...
December 9, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27933683/genetics-and-the-conservation-of-natural-populations-allozymes-to-genomes
#5
Fred W Allendorf
I consider how the study of genetic variation has influenced efforts to conserve natural populations over the last 50 years. Studies with allozymes in the 1970s provided the first estimates of the amount of genetic variation within and between natural populations at multiple loci. These early studies played an important role in developing plans to conserve species. The description of genetic variation in mitochondrial DNA in the early 1980s laid the foundation for the field of phylogeography, which provided a deeper look in time of the relationships and connectivity among populations...
December 9, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27933677/the-effect-of-slow-paced-breathing-on-stress-management-in-adolescents-with-intellectual-disability
#6
S Laborde, M S Allen, N Göhring, F Dosseville
BACKGROUND: Intellectual disabilities often create a state of chronic stress for both the person concerned and their significant others (family, caregivers). The development of stress management methods is therefore important for the reduction of stress in persons with intellectual disability. The aim of this experiment was to investigate the effect of slow-paced breathing on stress symptoms experienced by adolescents with intellectual disabilities during a cognitive task under time pressure...
December 9, 2016: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/27933669/characterization-of-nitrated-sugar-alcohols-by-atmospheric-pressure-chemical-ionization-mass-spectrometry
#7
Alla Ostrinskaya, Jude A Kelley, Roderick R Kunz
RATIONALE: The nitrated sugar alcohols mannitol hexanitrate (MHN), sorbitol hexanitrate (SHN) and xylitol pentanitrate (XPN) are in the same class of compounds as the powerful military grade explosive pentaerythritol tetranitrate (PETN) and the homemade explosive erythritol tetranitrate (ETN) but, unlike for PETN and ETN, ways to detect MHN, SHN and XPN by mass spectrometry (MS) have not been fully investigated. METHODS: Atmospheric-pressure chemical-ionization mass spectrometry (APCI-MS) was used to detect ions characteristic of nitrated sugar alcohols...
December 9, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27933654/in-vitro-detection-of-diesel-exhaust-particles-induced-human-lung-carcinoma-epithelial-cells-damage-and-the-effect-of-resveratrol
#8
Qifei Li, Mingjie Tang, Anhong Zhou
People are taking up antioxidants in their daily diet and being exposed to a potential diesel exhaust particles (DEP)-containing environment. Thus it is important to study in vitro cellular responses when cells are exposed to DEP with or without antioxidant treatment. The investigation of DEP and resveratrol (RES) on cellular biophysical and biochemical changes is needed to better understand the mechanisms of DEP and RES in mammalian cells. A combination of two non-invasive techniques (atomic force microscopy, AFM, and Raman spectroscopy, RM) and multimodal tools were applied to evaluate the biophysical, biochemical alterations and cytokine, membrane potential and cell cycle of cells with or without RES pretreatment to different times of DEP exposure...
December 9, 2016: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/27933645/aflatoxin-biomarkers-in-hair-may-facilitate-long-term-exposure-studies
#9
Innocent Mupunga, Christo D Izaaks, Leshweni J Shai, David R Katerere
Aflatoxins are highly toxic fungal metabolites produced by some members of the Aspergillus species. They are low molecular weight lipophilic compounds that are easily absorbed from the gastrointestinal tract. They contaminate most staple foods, including maize, peanuts, peanut butter and sorghum mainly in the tropics where hot and humid conditions promote fungal growth. Absorbed aflatoxins are metabolized by the cytochrome P450 enzyme system in the liver into toxic metabolites. Aflatoxin B (AFB)1 is the most toxic, carcinogenic and mutagenic naturally occurring toxin...
December 9, 2016: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/27933641/method-of-b0-mapping-with-magnitude-based-correction-for-bipolar-two-point-dixon-cardiac-mri
#10
Junmin Liu, Dana C Peters, Maria Drangova
PURPOSE: The conventional two-point (2pt) Dixon technique explicitly estimates B0 map by performing phase unwrapping. When signal loss, phase singularity, artifacts, or spatially isolated regions corrupt the measured phase images, this unwrapping-based technique will face difficulty. This work aims to improve the reliability of B0 mapping by performing unwrapping error correction. METHOD: To detect the unwrapping-caused phase errors, we determined a magnitude-based fat/water mask and used it as reference to identify pixels being mismatched by the phase-based mask, which was derived from the B0-corrected phase term of the Hermitian product between echoes...
December 8, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27933605/barriers-to-spousal-contribution-to-childbirth-pain-relief-in-nigeria
#11
A U Emelonye, T Pitkäaho, A Aregbesola, K Vehviläinen-Julkunen
AIM: The aim of this study was to investigate the barriers inhibiting the use of spousal presence for childbirth pain relief in health facilities and recommendations from three perspectives: the midwife, the woman, and the spouse. BACKGROUND: Spousal presence is a non-invasive, participatory and inexpensive technique used in pain management during childbirth. Although it contributes to a large extent in relieving childbirth pain, it is underutilized in Nigerian hospitals...
December 9, 2016: International Nursing Review
https://www.readbyqxmd.com/read/27933602/fish-tales-the-use-of-zebrafish-xenograft-human-cancer-cell-models
#12
REVIEW
Yvette Drabsch, B Ewa Snaar-Jagalska, Peter Ten Dijke
Advances in scientific techniques have provided researchers with exceptional new opportunities to identify and monitor changes between different cancer types, during different stages of progression, between individual tumor cells and in the surrounding stroma. The wealth of information that can be obtained from new scientific techniques places additional requirements on the conventional cancer models. New models that could be used to rapidly access the (potential) functional importance of newly identified (epi)genetic and proteomic changes and test the efficacy on emerging (combinatorial) therapies are desperately required...
December 9, 2016: Histology and Histopathology
https://www.readbyqxmd.com/read/27933591/charcoal-hemoperfusion-in-the-treatment-of-medically-refractory-pruritus-in-cholestatic-liver-disease
#13
Wonngarm Kittanamongkolchai, Ziad M El-Zoghby, J Eileen Hay, Russell H Wiesner, Patrick S Kamath, Nicholas F LaRusso, Kymberly D Watt, Carl H Cramer, Nelson Leung
BACKGROUND: Pruritus is a distressing symptom in a considerable proportion of cholestatic patients and a few of them do not respond to conventional treatment. Charcoal hemoperfusion (CH) is an extracorporeal technique that is effective in eliminating protein-bound substances which may have accumulated during cholestasis. Several case reports have shown significant reduction of bilirubin in mechanical jaundice and neonatal hemolytic jaundice. However, the published data of CH for the treatment of refractory pruritus in cholestatic patients are scarce...
December 8, 2016: Hepatology International
https://www.readbyqxmd.com/read/27933590/three-dimensional-rotational-angiography-for-assessment-of-coronary-arteries-during-melody-valve-implantation-introducing-a%C3%A2-technique-that-may-improve-outcomes
#14
C R Pockett, J W Moore, H G El-Said
BACKGROUND: Adverse events from Melody valve implantation may be catastrophic. To date a role for three dimensional rotational angiography of the aortic root (3DRAA) during Melody valve implantation has not been established. OBJECTIVES: To describe the role of 3DRAA in the assessment of Melody valve candidacy and to demonstrate that it may improve outcomes. METHODS: All patients who underwent cardiac catheterisation for Melody valve implantation and 3DRAA between August 2013 and February 2015 were reviewed...
December 8, 2016: Netherlands Heart Journal
https://www.readbyqxmd.com/read/27933588/mitraclip-step-by-step-how-to-simplify-the-procedure
#15
REVIEW
M A Sherif, L Paranskaya, S Yuecel, S Kische, O Thiele, G D'Ancona, A Neuhausen-Abramkina, J Ortak, H Ince, A Öner
The MitraClip system is a device for percutaneous edge-to-edge reconstruction of the mitral valve in patients with severe mitral regurgitation who are deemed at high risk for surgery. Studies have underlined the therapeutic benefit of the MitraClip system for patients at extreme and high risk for mitral valve surgery, suffering from either degenerative or functional mitral regurgitation. The MitraClip procedure shows low peri-procedural complication rates, and a significant reduction in mitral regurgitation, as well as an improvement in functional capacity and most importantly quality of life...
December 8, 2016: Netherlands Heart Journal
https://www.readbyqxmd.com/read/27933544/dissection-of-host-susceptibility-to-bacterial-infections-and-its-toxins
#16
Aysar Nashef, Mahmoud Agbaria, Ariel Shusterman, Nicola Ivan Lorè, Alessandra Bragonzi, Ervin Wiess, Yael Houri-Haddad, Fuad A Iraqi
Infection is one of the leading causes of human mortality and morbidity. Exposure to microbial agents is obviously required. However, also non-microbial environmental and host factors play a key role in the onset, development and outcome of infectious disease, resulting in large of clinical variability between individuals in a population infected with the same microbe. Controlled and standardized investigations of the genetics of susceptibility to infectious disease are almost impossible to perform in humans whereas mouse models allow application of powerful genomic techniques to identify and validate causative genes underlying human diseases with complex etiologies...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933537/complex-genetics-of-cardiovascular-traits-in-mice-f2-mapping-of-qtls-and-their-underlying-genes
#17
Svitlana Podliesna, Connie R Bezzina, Elisabeth M Lodder
In this chapter, we will use the example of the identification of Tnni3k as a modulator of cardiac conduction to introduce you to the use of a murine F2-generation intercross as a powerful method for the identification of novel genes relevant for cardiovascular traits. Murine F2-progeny is a genetically diverse panel of mice with differences in phenotype manifestations, e.g. cardiovascular traits such as cardiomyopathy and ECG parameters. This chapter discusses the best strategies for using F2-mice for genetic mapping...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933527/integrating-multidimensional-data-sources-to-identify-genes-regulating-complex-phenotypes
#18
Rupert W Overall
Phenotypes collected with a view to quantitative trait locus mapping can be augmented with compatible whole-transcriptome expression data and information from several other sources. These different data sources can be assembled into multidimensional network models which allow the identification of key genes potentially driving the phenotype of interest. The following chapter describes this approach using an example workflow. Several alternatives and potential limitations are discussed to aid the researcher when applying these techniques to their own work...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933522/complex-trait-analyses-of-the-collaborative-cross-tools-and-databases
#19
Ramesh Ram, Grant Morahan
The Collaborative cross (CC) is a powerful mouse resource for investigating complex genetic traits. Here we discuss various tools and techniques for gene mapping and identification using the CC. The data analyses procedures are illustrated with examples.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933475/how-safe-is-minimally-invasive-pedicle-screw-placement-for-treatment-of-thoracolumbar-spine-fractures
#20
Timo Michael Heintel, Stefan Dannigkeit, Annabel Fenwick, Martin Cornelius Jordan, Hendrik Jansen, Fabian Gilbert, Rainer Meffert
STUDY DESIGN: Prospective analysis of patients who underwent minimally invasive posterior instrumentation. OBJECTIVE: The purpose of this study was to evaluate the safety of minimally invasive pedicle screw placement in patients with unstable thoracic and lumbar spine fractures using the conventional fluoroscopy technique. Although wound infection, haematoma, and new neurological deficit due to screw malplacement remain a common source of morbidity, estimates of their rates of occurrence remain relatively limited...
December 8, 2016: European Spine Journal
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