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https://www.readbyqxmd.com/read/29154688/substance-use-and-cognitive-function-as-drivers-of-condomless-anal-sex-among-hiv-positive-gay-bisexual-and-other-men-who-have-sex-with-men-aged-50-and-older-the-gold-studies
#1
Sandra A Kupprat, Kristen D Krause, Danielle C Ompad, Perry N Halkitis
PURPOSE: Substance use has been linked to the sexual transmission of HIV among gay, bisexual, and other men who have sex with men (MSM) across the lifespan. Among older, HIV-positive, MSM populations, cognitive dysfunction associated with age and HIV disease progression also may play a role in sexual risk-taking. People aged 50 years and older represent a growing proportion of the overall HIV-positive population. This study aimed to explore relationships between substance use and cognitive function, and their impact on condomless anal sex (CAS) among HIV-positive gay, bisexual, and other MSM aged 50 years and older...
November 20, 2017: LGBT Health
https://www.readbyqxmd.com/read/29152311/associations-of-out-of-school-physical-activity-sedentary-lifestyle-and-socioeconomic-status-with-weight-status-and-adiposity-of-cameroon-children
#2
Lifoter K Navti, Mary B Atanga, Loveline L Niba
Background: Low physical activity and a sedentary lifestyle are contributing to overweight/obesity in children. This study aims to explore relationships between out of school physical activity, sedentary lifestyle and socioeconomic status indicators with children's weight status and adiposity. Methods: Five hundred twenty-two children of ages 5 to 12 years were randomly selected in a school-based cross sectional study in Bamenda, Cameroon. Weight and height were measured and BMI calculated...
2017: BMC Obesity
https://www.readbyqxmd.com/read/29152200/resource-partitioning-facilitates-coexistence-in-sympatric-cetaceans-in-the-california-current
#3
Sabrina Fossette, Briana Abrahms, Elliott L Hazen, Steven J Bograd, Kelly M Zilliacus, John Calambokidis, Julia A Burrows, Jeremy A Goldbogen, James T Harvey, Baldo Marinovic, Bernie Tershy, Donald A Croll
Resource partitioning is an important process driving habitat use and foraging strategies in sympatric species that potentially compete. Differences in foraging behavior are hypothesized to contribute to species coexistence by facilitating resource partitioning, but little is known on the multiple mechanisms for partitioning that may occur simultaneously. Studies are further limited in the marine environment, where the spatial and temporal distribution of resources is highly dynamic and subsequently difficult to quantify...
November 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29151881/genomic-insights-into-adaptive-divergence-and-speciation-among-malaria-vectors-of-the-anopheles-nili-group
#4
Caroline Fouet, Colince Kamdem, Stephanie Gamez, Bradley J White
Ongoing speciation in the most important African malaria vectors gives rise to cryptic populations, which differ remarkably in their behavior, ecology, and capacity to vector malaria parasites. Understanding the population structure and the drivers of genetic differentiation among mosquitoes is crucial for effective disease control because heterogeneity within vector species contributes to variability in malaria cases and allow fractions of populations to escape control efforts. To examine population structure and the potential impacts of recent large-scale control interventions, we have investigated the genomic patterns of differentiation in mosquitoes belonging to the Anopheles nili group-a large taxonomic group that diverged ~3 Myr ago...
October 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/29149419/changes-in-chromatin-state-reveal-arnt2-at-a-node-of-a-tumorigenic-transcription-factor-signature-driving-glioblastoma-cell-aggressiveness
#5
Alexandra Bogeas, Ghislaine Morvan-Dubois, Elias A El-Habr, François-Xavier Lejeune, Matthieu Defrance, Ashwin Narayanan, Klaudia Kuranda, Fanny Burel-Vandenbos, Salwa Sayd, Virgile Delaunay, Luiz G Dubois, Hugues Parrinello, Stéphanie Rialle, Sylvie Fabrega, Ahmed Idbaih, Jacques Haiech, Ivan Bièche, Thierry Virolle, Michele Goodhardt, Hervé Chneiweiss, Marie-Pierre Junier
Although a growing body of evidence indicates that phenotypic plasticity exhibited by glioblastoma cells plays a central role in tumor development and post-therapy recurrence, the master drivers of their aggressiveness remain elusive. Here we mapped the changes in active (H3K4me3) and repressive (H3K27me3) histone modifications accompanying the repression of glioblastoma stem-like cells tumorigenicity. Genes with changing histone marks delineated a network of transcription factors related to cancerous behavior, stem state, and neural development, highlighting a previously unsuspected association between repression of ARNT2 and loss of cell tumorigenicity...
November 17, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/29147618/programmed-cell-death-ligands-expression-in-phaeochromocytomas-and-paragangliomas-relationship-with-the-hypoxic-response-immune-evasion-and-malignant-behavior
#6
David J Pinato, James R Black, Sebastian Trousil, Roberto E Dina, Pritesh Trivedi, Francesco A Mauri, Rohini Sharma
The hypoxic response underlies the pathogenesis and malignant behavior of PCC/PGL. Regulation of PD-1 receptor-ligand signaling, a therapeutically actionable driver of the anti-tumor immune response, is a hypoxic-driven trait across malignancies. We evaluated the prognostic role of PD ligands in association with biomarkers of hypoxia and angiogenesis in patients with PCC/PGL. Tissue microarrays sections including consecutive cases diagnosed between 1983-2011 were stained for PD-L1 and 2, hypoxia inducible factor 1a (Hif-1a), Carbonic Anhydrase IX (CaIX), Vascular Endothelial Growth Factor-A (VEGF-A)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29145452/behavioral-climatic-and-environmental-risk-factors-for-zika-and-chikungunya-virus-infections-in-rio-de-janeiro-brazil-2015-16
#7
Trevon L Fuller, Guilherme Calvet, Camila Genaro Estevam, Jussara Rafael Angelo, Gbenga J Abiodun, Umme-Aiman Halai, Bianca De Santis, Patricia Carvalho Sequeira, Eliane Machado Araujo, Simone Alves Sampaio, Marco Cesar Lima de Mendonça, Allison Fabri, Rita Maria Ribeiro, Ryan Harrigan, Thomas B Smith, Claudia Raja Gabaglia, Patrícia Brasil, Ana Maria Bispo de Filippis, Karin Nielsen-Saines
The burden of arboviruses in the Americas is high and may result in long-term sequelae with infants disabled by Zika virus infection (ZIKV) and arthritis caused by infection with Chikungunya virus (CHIKV). We aimed to identify environmental drivers of arbovirus epidemics to predict where the next epidemics will occur and prioritize municipalities for vector control and eventual vaccination. We screened sera and urine samples (n = 10,459) from residents of 48 municipalities in the state of Rio de Janeiro for CHIKV, dengue virus (DENV), and ZIKV by molecular PCR diagnostics...
2017: PloS One
https://www.readbyqxmd.com/read/29145087/retention-performance-of-three-widely-used-spe-sorbents-for-the-extraction-of-perfluoroalkyl-substances-from-seawater
#8
Miroslav Brumovský, Jitka Bečanová, Pavlína Karásková, Luca Nizzetto
Some per- and polyfluoroalkyl substances (PFASs) have been detected ubiquitously in the environment. Owing to the polar character conferred by the presence of the carboxylic or sulfonic acid groups and their resistance to degradation, aquatic environments became their major reservoirs, including marine waters. The procedure of PFAS analysis in aqueous matrices consists usually of solid-phase extraction (SPE) followed by high-performance liquid chromatography coupled to tandem mass spectrometry. Moreover, passive sampling approach using various SPE sorbents may be applied...
November 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29143762/executive-function-capacities-negative-driving-behavior-and-crashes-in-young-drivers
#9
REVIEW
Elizabeth A Walshe, Chelsea Ward McIntosh, Daniel Romer, Flaura K Winston
Motor vehicle crashes remain a leading cause of injury and death in adolescents, with teen drivers three times more likely to be in a fatal crash when compared to adults. One potential contributing risk factor is the ongoing development of executive functioning with maturation of the frontal lobe through adolescence and into early adulthood. Atypical development resulting in poor or impaired executive functioning (as in Attention-Deficit/Hyperactivity Disorder) has been associated with risky driving and crash outcomes...
October 28, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29141883/thermal-history-and-gape-of-individual-mytilus-californianus-correlate-with-oxidative-damage-and-thermoprotective-osmolytes
#10
Lani U Gleason, Luke P Miller, Jacob R Winnikoff, George N Somero, Paul H Yancey, Dylan Bratz, W Wesley Dowd
The ability of animals to cope with environmental stress depends - in part - on past experience, yet knowledge of the factors influencing an individual's physiology in nature remains underdeveloped. We used an individual monitoring system to record body temperature and valve gaping behavior of rocky intertidal zone mussels (Mytilus californianus). Thirty individuals were selected from two mussel beds (wave-exposed and wave-protected) that differ in thermal regime. Instrumented mussels were deployed at two intertidal heights (near the lower and upper edges of the mussel zone) and in a continuously submerged tidepool...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29141640/discordance-in-self-report-and-observation-data-on-mistreatment-of-women-by-providers-during-childbirth-in-uttar-pradesh-india
#11
Arnab Dey, Holly Baker Shakya, Dharmendra Chandurkar, Sanjiv Kumar, Arup Kumar Das, John Anthony, Mrunal Shetye, Suneeta Krishnan, Jay G Silverman, Anita Raj
BACKGROUND: The study aims to assess the discordance between self-reported and observed measures of mistreatment of women during childbirth in public health facilities in Uttar Pradesh, India, as well as correlates of these measures and their discordance. METHODS: Cross sectional data were collected through direct observation of deliveries and follow-up interviews with women (n = 875) delivering in 81 public health facilities in Uttar Pradesh. Participants were surveyed on demographics, mistreatment during childbirth, and maternal and newborn complications...
November 15, 2017: Reproductive Health
https://www.readbyqxmd.com/read/29127067/understanding-the-structural-drivers-governing-glass-water-interactions-in-borosilicate-based-model-bioactive-glasses
#12
Nicholas Stone-Weiss, Eric M Pierce, Randall E Youngman, Ozgur Gulbiten, Nicholas J Smith, Jincheng Du, Ashutosh Goel
The past decade has witnessed a significant upsurge in the development of borate and borosilicate based resorbable bioactive glasses owing to their faster degradation rate in comparison to their silicate counterparts. However, due to our lack of understanding about the fundamental science governing the aqueous corrosion of these glasses, most of the borate/borosilicate based bioactive glasses reported in the literature have been designed by "trial-and-error" approach. With an ever-increasing demand for their application in treating a broad spectrum of non-skeletal health problems, it is becoming increasingly difficult to design advanced glass formulations using the same conventional approach...
November 7, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29121090/differences-between-racing-and-non-racing-drivers-a-simulator-study-using-eye-tracking
#13
Peter M van Leeuwen, Stefan de Groot, Riender Happee, Joost C F de Winter
Motorsport has developed into a professional international competition. However, limited research is available on the perceptual and cognitive skills of racing drivers. By means of a racing simulator, we compared the driving performance of seven racing drivers with ten non-racing drivers. Participants were tasked to drive the fastest possible lap time. Additionally, both groups completed a choice reaction time task and a tracking task. Results from the simulator showed faster lap times, higher steering activity, and a more optimal racing line for the racing drivers than for the non-racing drivers...
2017: PloS One
https://www.readbyqxmd.com/read/29119138/giant-positive-magnetoresistance-in-half-metallic-double-perovskite-sr2crwo6-thin-films
#14
Ji Zhang, Wei-Jing Ji, Jie Xu, Xiao-Yu Geng, Jian Zhou, Zheng-Bin Gu, Shu-Hua Yao, Shan-Tao Zhang
Magnetoresistance (MR) is the magnetic field-induced change of electrical resistance. The MR effect not only has wide applications in hard drivers and sensors but also is a long-standing scientific issue for complex interactions. Ferromagnetic/ferrimagnetic oxides generally show negative MR due to the magnetic field-induced spin order. We report the unusually giant positive MR up to 17,200% (at 2 K and 7 T) in 12-nm Sr2CrWO6 thin films, which show metallic behavior with high carrier density of up to 2.26 × 10(28) m(-3) and high mobility of 5...
November 2017: Science Advances
https://www.readbyqxmd.com/read/29118375/the-lipid-raft-dwelling-protein-us9-can-be-manipulated-to-target-app-compartmentalization-app-processing-and-neurodegenerative-disease-pathogenesis
#15
Renato Brandimarti, Gordon S Hill, Jonathan D Geiger, Olimpia Meucci
The trafficking behavior of the lipid raft-dwelling US9 protein from Herpes Simplex Virus strikingly overlaps with that of the amyloid precursor protein (APP). Both US9 and APP processing machinery rely on their ability to shuttle between endosomes and plasma membranes, as well as on their lateral accumulation in lipid rafts. Therefore, repurposing US9 to track/modify these molecular events represents a valid approach to investigate pathological states including Alzheimer's disease and HIV-associated neurocognitive disorders where APP misprocessing to amyloid beta formation has been observed...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29118217/new-breakthroughs-in-understanding-the-role-of-functional-interactions-between-the-neocortex-and-the-claustrum
#16
Solange P Brown, Brian N Mathur, Shawn R Olsen, Pierre-Hervé Luppi, Martha E Bickford, Ami Citri
Almost all areas of the neocortex are connected with the claustrum, a nucleus located between the neocortex and the striatum, yet the functions of corticoclaustral and claustrocortical connections remain largely obscure. As major efforts to model the neocortex are currently underway, it has become increasingly important to incorporate the corticoclaustral system into theories of cortical function. This Mini-Symposium was motivated by a series of recent studies which have sparked new hypotheses regarding the function of claustral circuits...
November 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29117192/can-you-catch-ebola-from-a-stork-bite-inductive-reasoning-influences-generalization-of-perceived-zoonosis-risk
#17
Tyler Davis, Micah B Goldwater, Molly E Ireland, Nicholas Gaylord, Jason Van Allen
Emerging zoonoses are a prominent global health threat. Human beliefs are central to drivers of emerging zoonoses, yet little is known about how people make inferences about risk in such scenarios. We present an inductive account of zoonosis risk perception, suggesting that beliefs about the range of animals able to transmit diseases to each other influence how people generalize risks to other animals and health behaviors. Consistent with our account, in Study 1, we find that participants who endorse higher likelihoods of cross-species disease transmission have stronger intentions to report animal bites...
2017: PloS One
https://www.readbyqxmd.com/read/29112881/safe-driving-climate-among-friends-sdcaf-a-new-scale
#18
Noga Guggenheim, Orit Taubman-Ben-Ari
Reckless driving among young people, especially young men, is a major cause of injury and fatalities the world over. Like other aspects of this age group, young drivers' driving behaviors and norms are influenced by the accepted social discourse of their peers. Yet despite extensive existing knowledge on young drivers, very few studies have dealt specifically with their characteristic friendship relations. This lacuna in the literature may reflect the absence of specific research tools for examining driving with friends...
November 4, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29112689/hiv-prevalence-and-behavioral-and-psychosocial-factors-among-transgender-women-and-cisgender-men-who-have-sex-with-men-in-8-african-countries-a-cross-sectional-analysis
#19
Tonia Poteat, Benjamin Ackerman, Daouda Diouf, Nuha Ceesay, Tampose Mothopeng, Ky-Zerbo Odette, Seni Kouanda, Henri Gautier Ouedraogo, Anato Simplice, Abo Kouame, Zandile Mnisi, Gift Trapence, L Leigh Ann van der Merwe, Vicente Jumbe, Stefan Baral
INTRODUCTION: Sub-Saharan Africa bears more than two-thirds of the worldwide burden of HIV; however, data among transgender women from the region are sparse. Transgender women across the world face significant vulnerability to HIV. This analysis aimed to assess HIV prevalence as well as psychosocial and behavioral drivers of HIV infection among transgender women compared with cisgender (non-transgender) men who have sex with men (cis-MSM) in 8 sub-Saharan African countries. METHODS AND FINDINGS: Respondent-driven sampling targeted cis-MSM for enrollment...
November 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29105239/different-shades-of-default-mode-disturbance-in-schizophrenia-subnodal-covariance-estimation-in-structure-and-function
#20
Jérémy Lefort-Besnard, Danielle S Bassett, Jonathan Smallwood, Daniel S Margulies, Birgit Derntl, Oliver Gruber, Andre Aleman, Renaud Jardri, Gaël Varoquaux, Bertrand Thirion, Simon B Eickhoff, Danilo Bzdok
Schizophrenia is a devastating mental disease with an apparent disruption in the highly associative default mode network (DMN). Interplay between this canonical network and others probably contributes to goal-directed behavior so its disturbance is a candidate neural fingerprint underlying schizophrenia psychopathology. Previous research has reported both hyperconnectivity and hypoconnectivity within the DMN, and both increased and decreased DMN coupling with the multimodal saliency network (SN) and dorsal attention network (DAN)...
November 3, 2017: Human Brain Mapping
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