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https://www.readbyqxmd.com/read/28441823/-evaluation-of-a-low-dose-imaging-protocol-on-radiation-exposure-reduction-in-pediatric-supraventricular-tachycardia-ablation-procedure
#1
F Wang, Y Lu, C Yuan, J R Bai, H S Yang, L Wu
Objective: To evaluate the feasibility and efficiency of a low dose imaging protocol on reducing X-ray dose level in pediatric supraventricular tachycardia (SVT) ablation procedure. Method: Data were collected from 103 patients who underwent catheter ablation for SVT in Children's Hospital of Fudan University from January 2014 to October 2016 in terms of body weight, body surface area (BSA), SVT types, accessory pathway location, fluoroscopy time and the radiation dose (including AIR KERMA and dose area product) in a case observational study...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28441787/codon-usage-optimization-and-construction-of-plasmid-encoding-iranian-human-papillomavirus-type-16-e7-oncogene-for-lactococcus-lactis-subsp-cremoris-mg1363
#2
Amir Hossein Mohseni, Vadood Razavilar, Hossein Keyvani, Mohammad Reza Razavi, Ramazan Ali Khavari Nejad
HPV 16 intratypic sequence variations has been recognized in association with oncogenic potential diverge and geographic distribution. This study aimed to investigate nucleotide modifications and optimization of HPV 16 E7 regions from Iranian infected women. Cervical biopsies from 79/163 HPV 16 positive cancer patients detected in our study were analyzed by PCR in a couple of cloning of a complete ORF of the E7 gene, and sequencing. The most frequently observed variant was C196T in E7 which led to an amino acid change of R66W...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28441782/deep-sequencing-analysis-of-rnas-from-citrus-plants-grown-in-a-citrus-sudden-death-affected-area-reveals-diverse-known-and-putative-novel-viruses
#3
Emilyn E Matsumura, Helvecio D Coletta-Filho, Shahideh Nouri, Bryce W Falk, Luca Nerva, Tiago S Oliveira, Silvia O Dorta, Marcos A Machado
Citrus sudden death (CSD) has caused the death of approximately four million orange trees in a very important citrus region in Brazil. Although its etiology is still not completely clear, symptoms and distribution of affected plants indicate a viral disease. In a search for viruses associated with CSD, we have performed a comparative high-throughput sequencing analysis of the transcriptome and small RNAs from CSD-symptomatic and -asymptomatic plants using the Illumina platform. The data revealed mixed infections that included Citrus tristeza virus (CTV) as the most predominant virus, followed by the Citrus sudden death-associated virus (CSDaV), Citrus endogenous pararetrovirus (CitPRV) and two putative novel viruses tentatively named Citrus jingmen-like virus (CJLV), and Citrus virga-like virus (CVLV)...
April 24, 2017: Viruses
https://www.readbyqxmd.com/read/28441774/brain-derived-neurotrophic-factor-mediated-perfluorooctane-sulfonate-induced-neurotoxicity-via-epigenetics-regulation-in-sk-n-sh-cells
#4
Xin-Xin Guo, Qing-Zhi He, Wu Li, Ding-Xin Long, Xiao-Yuan Pan, Cong Chen, Huai-Cai Zeng
Perfluorooctane sulfonate (PFOS), a new kind of persistent organic pollutant, is widely distributed in the environment and exists in various organisms, where it is also a neurotoxic compound. However, the potential mechanism of its neurotoxicity is still unclear. To examine the role of epigenetics in the neurotoxicity induced by PFOS, SK-N-SH cells were treated with different concentrations of PFOS or control medium (0.1% DMSO) for 48 h. The mRNA levels of DNA methyltransferases (DNMTs) and Brain-derived neurotrophic factor (BDNF), microRNA-16, microRNA-22, and microRNA-30a-5p were detected by Quantitative PCR (QPCR)...
April 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441773/overview-of-four-functional-classification-systems-commonly-used-in-cerebral-palsy
#5
REVIEW
Andrea Paulson, Jilda Vargus-Adams
Cerebral palsy (CP) is the most common physical disability in childhood. CP comprises a heterogeneous group of disorders that can result in spasticity, dystonia, muscle contractures, weakness and coordination difficulty that ultimately affects the ability to control movements. Traditionally, CP has been classified using a combination of the motor type and the topographical distribution, as well as subjective severity level. Imprecise terms such as these tell very little about what a person is able to do functionally and can impair clear communication between providers...
April 24, 2017: Children
https://www.readbyqxmd.com/read/28441740/a-miniature-aerosol-sensor-for-detecting-polydisperse-airborne-ultrafine-particles
#6
Chao Zhang, Dingqu Wang, Rong Zhu, Wenming Yang, Peng Jiang
Counting and sizing of polydisperse airborne nanoparticles have attracted most attentions owing to increasing widespread presence of airborne engineered nanoparticles or ultrafine particles. Here we report a miniature aerosol sensor to detect particle size distribution of polydisperse ultrafine particles based on ion diffusion charging and electrical detection. The aerosol sensor comprises a couple of planar electrodes printed on two circuit boards assembled in parallel, where charging, precipitation and measurement sections are integrated into one chip, which can detect aerosol particle size in of 30-500 nm, number concentration in range of 5 × 10²-10⁷ /cm³...
April 22, 2017: Sensors
https://www.readbyqxmd.com/read/28441727/job-strain-and-casual-blood-pressure-distribution-looking-beyond-the-adjusted-mean-and-taking-gender-age-and-use-of-antihypertensives-into-account-results-from-elsa-brasil
#7
Leidjaira Lopes Juvanhol, Enirtes Caetano Prates Melo, Marilia Sá Carvalho, Dóra Chor, José Geraldo Mill, Rosane Härter Griep
Methodological issues are pointed to as the main sources of inconsistencies in studies about the association between job strain and blood pressure (BP)/hypertension. Our aim was to analyze the relationship between job strain and the whole BP distribution, as well as potential differences by gender, age, and use of antihypertensives. Additionally, we addressed issues relating to the operationalization of the exposure and outcome variables that influence the study of their inter-relations. We evaluated the baseline date of 12,038 participants enrolled in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) (2008-2010), a multicenter cohort study of 35-74-year-old civil servants...
April 22, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28441693/sex-differences-in-fat-distribution-influence-the-association-between-bmi-and-arterial-stiffness
#8
Inge C L van den Munckhof, Suzanne Holewijn, Jacqueline de Graaf, Joost H W Rutten
CONTEXT AND OBJECTIVE: The increase in arterial stiffness in patients with the metabolic syndrome is strongly related to the amount of visceral adipose tissue. In clinical practice, anthropometric measurements such as BMI and waist circumference are commonly used to assess general and abdominal adiposity. Waist circumference is a composite measure of subcutaneous and visceral abdominal adipose tissue. As the distribution of intra-abdominal fat differs between men and women, we investigated the sex-specific associations between different anthropometric measures for general and abdominal obesity with arterial stiffness...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441623/identification-of-a-macrobrachium-nipponense-c-type-lectin-with-a-close-evolutionary-relationship-to-vertebrate-lectins
#9
Xin Huang, Tingting Li, Min Jin, Shaowu Yin, Wen Wang, Qian Ren
C-type lectins (CTLs) are involved in the innate immune defense of vertebrates and invertebrates against invading pathogens. This study cloned and characterized a novel C-type lectin (MnCTL) of the oriental river prawn, Macrobrachium nipponense. The cloned MnCTL cDNA encompasses an open reading frame of 774 nucleotides and encodes polypeptides of 257 residues. The deduced MnCTL protein contains a single carbohydrate recognition domain (CRD) with an EPN (Glu-Pro-Asn) motif in calcium-binding site 2. Phylogenetic analysis indicated that MnCTL has a closer evolutionary relationship with vertebrate lectins than with invertebrate lectins...
April 22, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28441600/microplastics-in-the-antarctic-marine-system-an-emerging-area-of-research
#10
REVIEW
Catherine L Waller, Huw J Griffiths, Claire M Waluda, Sally E Thorpe, Iván Loaiza, Bernabé Moreno, Cesar O Pacherres, Kevin A Hughes
It was thought that the Southern Ocean was relatively free of microplastic contamination; however, recent studies and citizen science projects in the Southern Ocean have reported microplastics in deep-sea sediments and surface waters. Here we reviewed available information on microplastics (including macroplastics as a source of microplastics) in the Southern Ocean. We estimated primary microplastic concentrations from personal care products and laundry, and identified potential sources and routes of transmission into the region...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441595/modelling-drivers-and-distribution-of-lead-and-zinc-concentrations-in-soils-of-an-urban-catchment-sydney-estuary-australia
#11
L E Johnson, T F A Bishop, G F Birch
The human population is increasing globally and land use is changing to accommodate for this growth. Soils within urban areas require closer attention as the higher population density increases the chance of human exposure to urban contaminants. One such example of an urban area undergoing an increase in population density is Sydney, Australia. The city also possesses a notable history of intense industrial activity. By integrating multiple soil surveys and covariates into a linear mixed model, it was possible to determine the main drivers and map the distribution of lead and zinc concentrations within the Sydney estuary catchment...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441541/molecular-interaction-of-2-4-diacetylphloroglucinol-dapg-with-human-serum-albumin-hsa-the-spectroscopic-calorimetric-and-computational-investigation
#12
Pragna Lakshmi T, Moumita Mondal, Krishna Ramadas, Sakthivel Natarajan
Drug molecule interaction with human serum albumin (HSA) affects the distribution and elimination of the drug. The compound, 2,4-diacetylphloroglucinol (DAPG) has been known for its antimicrobial, antiviral, antihelminthic and anticancer properties. However, its interaction with HSA is not yet reported. In this study, the interaction between HSA and DAPG was investigated through steady-state fluorescence, time-resolved fluorescence (TRF), circular dichroism (CD), Fourier transform infrared (FT-IR) spectroscopy, isothermal titration calorimetry (ITC), molecular docking and molecular dynamics simulation (MDS)...
April 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28441538/real-time-observation-of-cascaded-electronic-relaxation-processes-in-p-fluorotoluene
#13
Qiaoli Hao, Xulan Deng, Jinyou Long, Yanmei Wang, Bumaliya Abulimiti, Bing Zhang
Ultrafast electronic relaxation processes following two photoexcitation of 400nm in p-Fluorotoluene (pFT) have been investigated utilizing time-resolved photoelectron imaging coupled with time-resolved mass spectroscopy. Cascaded electronic relaxation processes started from the electronically excited S2 state are directly imaged in real time and well characterized by two distinct time constants of ~85±10fs and 2.4±0.3ps. The rapid component corresponds to the lifetime of the initially excited S2 state, including the structure relaxation from the Franck-Condon region to the conical intersection of S2/S1 and the subsequent internal conversion to the highly excited S1 state...
April 19, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28441535/investigation-of-the-vertical-distribution-and-speciation-of-137-cs-in-soil-profiles-at-burnt-and-unburnt-forest-sites-in-the-belarusian-exclusion-zone
#14
M Dowdall, Y Bondar, L Skipperud, V Zabrotski, M Nandrup Pettersen, Ø G Selnæs, J E Brown
The effects of fire events on contaminant radionuclides within soils of the Belarusian Exclusion Zone were investigated. A number of cores were taken from locations known to have been subject to fire events in the past as well as a series of cores from nearby unburnt locations. Both burnt and unburnt cores were analyzed for contaminant radionuclides as well as a range of relevant soil parameters. The distribution of (137)Cs between various fractions (reversibly bound, irreversibly bound and insoluble) was analyzed...
April 22, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28441532/pcp-and-sax-3-robo-pathways-cooperate-to-regulate-convergent-extension-based-nerve-cord-assembly-in-c-%C3%A2-elegans
#15
Pavak K Shah, Matthew R Tanner, Ismar Kovacevic, Aysha Rankin, Teagan E Marshall, Nathaniel Noblett, Nhan Nguyen Tran, Tony Roenspies, Jeffrey Hung, Zheqian Chen, Cristina Slatculescu, Theodore J Perkins, Zhirong Bao, Antonio Colavita
Formation and resolution of multicellular rosettes can drive convergent extension (CE) type cell rearrangements during tissue morphogenesis. Rosette dynamics are regulated by both planar cell polarity (PCP)-dependent and -independent pathways. Here we show that CE is involved in ventral nerve cord (VNC) assembly in Caenorhabditis elegans. We show that a VANG-1/Van Gogh and PRKL-1/Prickle containing PCP pathway and a Slit-independent SAX-3/Robo pathway cooperate to regulate, via rosette intermediaries, the intercalation of post-mitotic neuronal cell bodies during VNC formation...
April 24, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28441523/carbohydrates-and-gibberellins-relationship-in-potato-tuberization
#16
Hana Ševčíková, Petra Mašková, Danuše Tarkowská, Tomáš Mašek, Helena Lipavská
Potato represents the third most important crop worldwide and therefore to understand regulations of tuber onset is crucial from both theoretical and practical points of view. Photosynthesis and related carbohydrate status along with phytohormone balance belong to the essential factors in regulation of plant development including storage organ formation. In our work we used potato (Solanum tuberosum) cv. Lada and its spontaneously tuberizing mutant (ST plants) grown in vitro under low carbohydrate availability (non-inductive conditions)...
April 8, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28441467/distribution-of-mammal-functional-diversity-in-the-neotropical-realm-influence-of-land-use-and-extinction-risk
#17
José F González-Maya, Enrique Martínez-Meyer, Rodrigo Medellín, Gerardo Ceballos
Functional diversity represents a measure of diversity that incorporates the role of species in an ecosystem, and therefore its dynamics and resilience. Assessing its drivers and spatial variation represents an important step forward in our understanding of functional ecosystem dynamics and it is also necessary to achieve a comprehensive conservation planning. In this paper, we assessed mammal functional diversity for the 218 ecoregions within the Neotropical realm. We evaluated the overall influence and spatial variation of species richness, ecoregion extent, intervention and species at risk on functional diversity...
2017: PloS One
https://www.readbyqxmd.com/read/28441466/biomonitoring-of-marine-vertebrates-in-monterey-bay-using-edna-metabarcoding
#18
Elizabeth A Andruszkiewicz, Hilary A Starks, Francisco P Chavez, Lauren M Sassoubre, Barbara A Block, Alexandria B Boehm
Molecular analysis of environmental DNA (eDNA) can be used to assess vertebrate biodiversity in aquatic systems, but limited work has applied eDNA technologies to marine waters. Further, there is limited understanding of the spatial distribution of vertebrate eDNA in marine waters. Here, we use an eDNA metabarcoding approach to target and amplify a hypervariable region of the mitochondrial 12S rRNA gene to characterize vertebrate communities at 10 oceanographic stations spanning 45 km within the Monterey Bay National Marine Sanctuary (MBNMS)...
2017: PloS One
https://www.readbyqxmd.com/read/28441444/contexts-of-occurrence-of-child-malnutrition-in-the-district-of-villaguay-entre-r%C3%A3-os-argentina-a-multivariate-analysis
#19
María Laura Bergel Sanchís, María Florencia Cesani, Evelia Edith Oyhenart
The analysis of nutritional status is anthropologically important to address the complex interaction of biological, social, political, economic and cultural factors. To deepen the knowledge about contexts of occurrence of child malnutrition, we analyzed nutritional status in relation to socio-environmental conditions of residence in children between three and six years from Villaguay, Entre Ríos, Argentina. We performed a cross-sectional study of 1,435 school children of both sexes. Body weight and height were measured and prevalence of low height/age (LH/A), low weight/age (LW/A), low BMI/age (LBMI/A), overweight (Ow) and obesity (Ob) was calculated using World Health Organization reference charts...
2017: PloS One
https://www.readbyqxmd.com/read/28441434/testing-survey-based-methods-for-rapid-monitoring-of-child-mortality-with-implications-for-summary-birth-history-data
#20
Eoghan Brady, Kenneth Hill
INTRODUCTION: Under-five mortality estimates are increasingly used in low and middle income countries to target interventions and measure performance against global development goals. Two new methods to rapidly estimate under-5 mortality based on Summary Birth Histories (SBH) were described in a previous paper and tested with data available. This analysis tests the methods using data appropriate to each method from 5 countries that lack vital registration systems. SBH data are collected across many countries through censuses and surveys, and indirect methods often rely upon their quality to estimate mortality rates...
2017: PloS One
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