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https://www.readbyqxmd.com/read/28088081/lead-pb-2-and-copper-cu-2-remediation-from-water-using-superparamagnetic-maghemite-%C3%AE-fe2o3-nanoparticles-synthesized-by-flame-spray-pyrolysis-fsp
#1
Shalini Rajput, Lok P Singh, Charles U Pittman, Dinesh Mohan
Superparamagnetic maghemite (γ-Fe2O3) nanoparticles of controllable morphology were successfully synthesized using a flame spray pyrolysis (FSP) technique. Their physico-chemical properties, size, morphology, and surface chemistries were determined using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), selected area electron diffraction patterns (SAED), SEM-EDX, scanning electron microscopy (SEM), and pHZPC(6.3). Elemental contents before and after adsorption were identified using energy dispersive X-ray fluorescence (ED-XRF), energy dispersive X-ray analysis (EDX) and elemental mapping...
November 27, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28087797/the-cascading-effects-of-marginalization-and-pathways-of-resilience-in-attaining-good-health-among-lgbt-older-adults
#2
Karen I Fredriksen-Goldsen, Hyun-Jun Kim, Amanda E B Bryan, Chengshi Shiu, Charles A Emlet
PURPOSE OF THE STUDY: Lesbian, gay, bisexual, and transgender (LGBT) older adults comprise a diverse and growing health disparate population. In the present study, using the Health Equity Promotion Model, we investigated pathways by which LGBT older adults experience resilience, risk, and marginalization and their relationship to attaining positive health outcomes. DESIGN AND METHODS: Aging with Pride: National Health, Aging, and Sexuality/Gender Study (NHAS) is the first longitudinal research project designed to examine the health, aging, and well-being of LGBT adults aged 50 and older...
February 2017: Gerontologist
https://www.readbyqxmd.com/read/28087796/prior-military-service-identity-stigma-and-mental-health-among-transgender-older-adults
#3
Charles P Hoy-Ellis, Chengshi Shiu, Kathleen M Sullivan, Hyun-Jun Kim, Allison M Sturges, Karen I Fredriksen-Goldsen
PURPOSE OF THE STUDY: Converging evidence from large community-based samples, Internet studies, and Veterans Health Administration data suggest that transgender adults have high rates of U.S. military service. However, little is known about the role of prior military service in their mental health later in life, particularly in relation to identity stigma. In this article, we examine relationships between prior military service, identity stigma, and mental health among transgender older adults...
February 2017: Gerontologist
https://www.readbyqxmd.com/read/28087794/bouncing-back-resilience-and-mastery-among-hiv-positive-older-gay-and-bisexual-men
#4
Charles A Emlet, Chengshi Shiu, Hyun-Jun Kim, Karen Fredriksen-Goldsen
PURPOSE OF THE STUDY: Adults with HIV infection are living into old age. It is critical we investigate positive constructs such as resilience and mastery to determine factors associated with psychological well-being. We examine HIV-related factors, adverse conditions, and psychosocial characteristics that are associated with resilience (the ability to bounce back) and mastery (sense of self-efficacy). DESIGN AND METHODS: We analyzed 2014 data from the longitudinal study Aging with Pride: National Health, Aging, and Sexuality/Gender Study (NHAS), focusing on a subsample of 335 gay and bisexual older men...
February 2017: Gerontologist
https://www.readbyqxmd.com/read/28087764/accumulation-of-polyribosomes-in-dendritic-spine-heads-but-not-bases-and-necks-during-memory-consolidation-depends-on-cap-dependent-translation-initiation
#5
Linnaea E Ostroff, Benjamin Botsford, Sofya Gindina, Kiriana K Cowansage, Joseph E LeDoux, Eric Klann, Charles Hoeffer
: Translation in dendrites is believed to support synaptic changes during memory consolidation. Although translational control mechanisms are fundamental mediators of memory, little is known about their role in local translation. We previously found that polyribosomes accumulate in dendritic spines of the adult rat lateral amygdala (LA) during consolidation of aversive Pavlovian conditioning, and that this memory requires cap-dependent initiation, a primary point of translational control in eukaryotic cells...
January 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28087715/sf3b1-hsh155-heat-motif-mutations-affect-interaction-with-the-spliceosomal-atpase-prp5-resulting-in-altered-branch-site-selectivity-in-pre-mrna-splicing
#6
Qing Tang, Susana Rodriguez-Santiago, Jing Wang, Jia Pu, Andrea Yuste, Varun Gupta, Alberto Moldón, Yong-Zhen Xu, Charles C Query
Mutations in the U2 snRNP component SF3B1 are prominent in myelodysplastic syndromes (MDSs) and other cancers and have been shown recently to alter branch site (BS) or 3' splice site selection in splicing. However, the molecular mechanism of altered splicing is not known. We show here that hsh155 mutant alleles in Saccharomyces cerevisiae, counterparts of SF3B1 mutations frequently found in cancers, specifically change splicing of suboptimal BS pre-mRNA substrates. We found that Hsh155p interacts directly with Prp5p, the first ATPase that acts during spliceosome assembly, and localized the interacting regions to HEAT (Huntingtin, EF3, PP2A, and TOR1) motifs in SF3B1 associated with disease mutations...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28087683/percutaneous-patent-ductus-arteriosus-pda-closure-during-infancy-a-meta-analysis
#7
REVIEW
Carl H Backes, Brian K Rivera, Jeffrey A Bridge, Aimee K Armstrong, Brian A Boe, Darren P Berman, Tyler Fick, Ralf J Holzer, Ziyad M Hijazi, Sylvia Abadir, Henri Justino, Lisa Bergersen, Charles V Smith, Haresh Kirpalani
CONTEXT: Patent ductus arteriosus (PDA) is a precursor to morbidity and mortality. Percutaneous (catheter-based) closure is the procedure of choice for adults and older children with a PDA, but use during infancy (<1 year) is not well characterized. OBJECTIVE: Investigate the technical success and safety of percutaneous PDA closure during infancy. DATA SOURCES: Scopus, Web of Science, Embase, PubMed, and Ovid (Medline) were searched through December 2015 with no language restrictions...
January 13, 2017: Pediatrics
https://www.readbyqxmd.com/read/28087575/treating-inflammation-and-infection-in-the-21st-century-new-hints-from-decoding-resolution-mediators-and-mechanisms
#8
REVIEW
Charles N Serhan
Practitioners of ancient societies from the time of Hippocrates and earlier recognized and treated the signs of inflammation, heat, redness, swelling, and pain with agents that block or inhibit proinflammatory chemical mediators. More selective drugs are available today, but this therapeutic concept has not changed. Because the acute inflammatory response is host protective to contain foreign invaders, much of today's pharmacopeia can cause serious unwanted side effects, such as immune suppression. Uncontrolled inflammation is now considered pathophysiologic and is associated with many widely occurring diseases such as cardiovascular disease, neurodegenerative diseases, diabetes, obesity, and asthma, as well as classic inflammatory diseases (e...
January 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28087527/floc-formation-reduces-the-ph-stress-experienced-by-microorganisms-living-in-alkaline-environments
#9
C J Charles, S P Rout, K A Patel, S Akbar, A P Laws, B R Jackson, S A Boxall, P N Humphreys
: The survival of microorganisms within a cementitious geological disposal facility for radioactive wastes is heavily dependent on their ability to survive the calcium dominated, hyper-alkaline conditions resulting from the dissolution of the cementitious materials. The present study shows that the formation of flocs, composed of a complex mixture of extracellular polymeric substances (EPS), provides protection against alkaline pH values up to pH 13.0. The flocs were dominated by Alishewanella and Dietzia sp, producing a mannose rich carbohydrate fraction incorporating extracellular DNA, resulting in Ca(2+) sequestration...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28087489/neurite-density-index-is-sensitive-to-age-related-differences-in-the-developing-brain
#10
Sila Genc, Charles B Malpas, Scott K Holland, Richard Beare, Timothy J Silk
PURPOSE: White matter development during childhood and adolescence is characterised by increasing white matter coherence and organisation. Commonly used scalar metrics, such as fractional anisotropy (FA), are sensitive to multiple mechanisms of white matter change and therefore unable to distinguish between mechanisms that change during development. We investigate the relationship between age and neurite density index (NDI) from neurite orientation dispersion and density imaging (NODDI), and the age-classification accuracy of NDI compared with FA, in a developmental cohort...
January 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28087420/on-the-quirks-of-maximum-parsimony-and-likelihood-on-phylogenetic-networks
#11
Christopher Bryant, Mareike Fischer, Simone Linz, Charles Semple
Maximum parsimony is one of the most frequently-discussed tree reconstruction methods in phylogenetic estimation. However, in recent years it has become more and more apparent that phylogenetic trees are often not sufficient to describe evolution accurately. For instance, processes like hybridization or lateral gene transfer that are commonplace in many groups of organisms and result in mosaic patterns of relationships cannot be represented by a single phylogenetic tree. This is why phylogenetic networks, which can display such events, are becoming of more and more interest in phylogenetic research...
January 10, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28087419/cochlear-synaptopathy-in-acquired-sensorineural-hearing-loss-manifestations-and-mechanisms
#12
REVIEW
M Charles Liberman, Sharon G Kujawa
Common causes of hearing loss in humans - exposure to loud noise or ototoxic drugs and aging - often damage sensory hair cells, reflected as elevated thresholds on the clinical audiogram. Recent studies in animal models suggest, however, that well before this overt hearing loss can be seen, a more insidious, but likely more common, process is taking place that permanently interrupts synaptic communication between sensory inner hair cells and subsets of cochlear nerve fibers. The silencing of affected neurons alters auditory information processing, whether accompanied by threshold elevations or not, and is a likely contributor to a variety of perceptual abnormalities, including speech-in-noise difficulties, tinnitus and hyperacusis...
January 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28087298/the-utility-of-sex-hormone-binding-globulin-in-hypogonadism-and-infertile-males
#13
Joshua Ring, Charles Welliver, Mike Parenteau, Stephen Markwell, Robert E Brannigan, Tobias S Köhler
PURPOSE: We sought to determine what role SHBG played with male infertility patients. METHODS: Retrospective review of 168 males seen in a fertility clinic from 2012-2014, to investigate the accuracy of TT in the biochemical diagnosis of hypogonadism using cBT as the reference value. We used a multivariable analysis to assess SHBG as an independent predictor of infertility. RESULTS: Computations using cBT as a standard in the measurement of definitive biochemical hypogonadism (<156 ng/dL) revealed a sensitivity, specificity, PPV, and NPV respectively of 81%, 83%, 81%, and 82% in diagnosing hypogonadism with TT alone...
January 10, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28087265/myocardial-relaxation-is-accelerated-by-fast-stretch-not-reduced-afterload
#14
Charles S Chung, Charles W Hoopes, Kenneth S Campbell
Fast relaxation of cross-bridge generated force in the myocardium facilitates efficient diastolic function. Recently published research studying mechanisms that modulate the relaxation rate has focused on molecular factors. Mechanical factors have received less attention since the 1980s when seminal work established the theory that reducing afterload accelerates the relaxation rate. Clinical trials using afterload reducing drugs, partially based on this theory, have thus far failed to improve outcomes for patients with diastolic dysfunction...
January 10, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28087179/value-of-serum-n-terminal-b-type-natriuretic-peptide-in-asymptomatic-structural-heart-disease-in-taiwanese-population-comparisons-with-current-esc-guidelines
#15
Ta-Chuan Hung, Kuang-Te Wang, Chun-Ho Yun, Jen-Yuan Kuo, Charles Jia-Yin Hou, Chia-Yuan Liu, Tung-Hsin Wu, Hiram G Bezerra, Hsiao-Yang Cheng, Chung-Lieh Hung, Hung-I Yeh
BACKGROUND: The relationship between N-terminal pro-brain natriuretic peptide (NT-proBNP) and cardiac structural or functional anomalies in pre-clinical, asymptomatic Asian populations has not been well identified. METHODS: From October 2005 to March 2008, we enrolled consecutive asymptomatic adults with preserved global left ventricular (LV) function (ejection fraction>50%) who underwent annual cardiovascular health survey. Circulating NT-proBNP was used to identify echo-defined cardiac structural/functional anomalies and compared to current recommended cut-off from the European Society of Heart Failure...
December 29, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28087132/practice-patterns-of-thoracic-radiotherapy-for-extensive-stage-small-cell-lung-cancer-survey-of-us-academic-thoracic-radiation-oncologists
#16
Carl M Post, Vivek Verma, Timur Mitin, Charles B Simone
PURPOSE: Despite the recent CREST trial demonstrating a survival benefit to thoracic radiotherapy (TRT) for patients with extensive-stage small-cell lung cancer (ES-SCLC) with response to chemotherapy, as well as endorsement by current National Comprehensive Cancer Network guidelines, TRT may not be uniformly delivered in clinical practice across all circumstances. METHODS AND MATERIALS: We surveyed US academic thoracic radiation oncologists regarding their practice patterns for TRT and assessed conditions in which withholding TRT could be warranted...
December 22, 2016: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28081447/hepatic-transcriptional-responses-to-copper-in-the-three-spined-stickleback-are-affected-by-their-pollution-exposure-history
#17
Tamsyn M Uren Webster, Tim D Williams, Ioanna Katsiadaki, Anke Lange, Ceri Lewis, Janice A Shears, Charles R Tyler, Eduarda M Santos
Some fish populations inhabiting contaminated environments show evidence of increased chemical tolerance, however the mechanisms contributing to this tolerance, and whether this is heritable, are poorly understood. We investigated the responses of two populations of wild three-spined stickleback (Gasterosteus aculeatus) with different histories of contaminant exposure to an oestrogen and copper, two widespread aquatic pollutants. Male stickleback originating from two sites, the River Aire, with a history of complex pollution discharges, and Siblyback Lake, with a history of metal contamination, were depurated and then exposed to copper (46μg/L) and the synthetic oestrogen ethinyloestradiol (22ng/L)...
December 31, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/28081298/full-thickness-heart-repair-with-an-engineered-multilayered-myocardial-patch-in-rat-model
#18
Seokwon Pok, Igor V Stupin, Christopher Tsao, Robia G Pautler, Yang Gao, Raymond M Nieto, Ze-Wei Tao, Charles D Fraser, Ananth V Annapragada, Jeffrey G Jacot
In a rat model of right free wall replacement, the transplantation of an engineered multilayered myocardial patch fabricated from a polycaprolactone membrane supporting a chitosan/heart matrix hydrogel induces significant muscular and vascular remodeling and results in a significantly higher right ventricular ejection fraction compared to use of a commercially available pericardium patch.
January 12, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28081231/physical-activity-energy-expenditure-nutritional-habits-quality-of-sleep-and-stress-levels-in-shift-working-health-care-personnel
#19
Frederick Charles Roskoden, Janine Krüger, Lena Johanna Vogt, Simone Gärtner, Hans Joachim Hannich, Antje Steveling, Markus M Lerch, Ali A Aghdassi
BACKGROUND: Among health care personnel working regular hours or rotating shifts can affect parameters of general health and nutrition. We have investigated physical activity, sleep quality, metabolic activity and stress levels in health care workers from both groups. METHODS: We prospectively recruited 46 volunteer participants from the workforce of a University Medical Department of which 23 worked in rotating shifts (all nursing) and 21 non-shift regular hours (10 nursing, 13 clerical staff)...
2017: PloS One
https://www.readbyqxmd.com/read/28081084/tailoring-supercontinuum-generation-beyond-2%C3%A2-%C3%A2-%C3%AE-m-in-step-index-tellurite-fibers
#20
Clement Strutynski, Paul Froidevaux, Frédéric Désévédavy, Jean-Charles Jules, Grégory Gadret, Abdelkrim Bendahmane, Karol Tarnowski, Bertrand Kibler, Frédéric Smektala
We report numerical and experimental demonstrations of flexible group-velocity dispersion regimes in step-index tellurite fibers by fine control of the fiber core diameter. Our simple fiber design allowed us to explore various nonlinear propagation regimes beyond 2 μm, which involved careful control of four-wave mixing processes. Combined with the recent development of 2 μm fiber lasers, we present an easy way to tailor supercontinuum generation and related coherence features in the high-demand 1.5-3.5 μm spectral region...
January 15, 2017: Optics Letters
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