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https://www.readbyqxmd.com/read/28088843/evaluating-surrogate-marker-information-using-censored-data
#1
Layla Parast, Tianxi Cai, Lu Tian
Given the long follow-up periods that are often required for treatment or intervention studies, the potential to use surrogate markers to decrease the required follow-up time is a very attractive goal. However, previous studies have shown that using inadequate markers or making inappropriate assumptions about the relationship between the primary outcome and surrogate marker can lead to inaccurate conclusions regarding the treatment effect. Currently available methods for identifying and validating surrogate markers tend to rely on restrictive model assumptions and/or focus on uncensored outcomes...
January 15, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28088740/associations-between-adverse-childhood-experiences-student-teacher-relationships-and-non-medical-use-of-prescription-medications-among-adolescents
#2
Myriam Forster, Amy L Gower, Iris W Borowsky, Barbara J McMorris
OBJECTIVE: Few studies have investigated associations between adverse childhood experiences (ACE) and nonmedical use of prescription medication (NMUPM) in population-based samples of adolescents, and even fewer have examined whether promotive factors might buffer these effects. The present study assesses the direct effects of ACE and positive student-teacher relationships on NUMPD and whether positive student-teacher relationships moderate this association. DESIGN: Data were from the 2013 Minnesota Student Survey (MSS), an in-school survey administered every three years to students throughout Minnesota...
January 6, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28088713/the-effects-of-utterance-timing-and-stimulation-of-left-prefrontal-cortex-on-the-production-of-referential-expressions
#3
Jennifer E Arnold, Nazbanou Nozari
We examined the relationship between the timing of utterance initiation and the choice of referring expressions, e.g., pronouns (it), zeros (…and went down), or descriptive NPs (the pink pentagon). We examined language production in healthy adults, and used anodal transcranial direct current stimulation (tDCS) to test the involvement of the left prefrontal cortex (PFC) in the timing of utterance production and the selection of reference forms in a discourse context. Twenty-two subjects (11 anodal, 11sham) described fast-paced actions, e...
January 12, 2017: Cognition
https://www.readbyqxmd.com/read/28088701/testing-the-causal-theory-of-reference
#4
Filippo Domaneschi, Massimiliano Vignolo, Simona Di Paola
Theories of reference are a crucial research topic in analytic philosophy. Since the publication of Kripke's Naming and Necessity, most philosophers have endorsed the causal/historical theory of reference. The goal of this paper is twofold: (i) to discuss a method for testing experimentally the causal theory of reference for proper names by investigating linguistic usage and (ii) to present the results from two experiments conducted with that method. Data collected in our experiments confirm the causal theory of reference for people proper names and for geographical proper names...
January 12, 2017: Cognition
https://www.readbyqxmd.com/read/28088674/people-s-reasons-for-wanting-to-complete-probation-use-and-predictive-validity-in-an-e-health-intervention
#5
Stephanie A Spohr, Faye S Taxman, Scott T Walters
The criminal justice system tends to emphasize external contingencies (e.g., fees, jail time) to motivate offender compliance. However, people's reasons for desistance vary considerably. This study evaluated the acceptability, utility, and predictive validity of questions that ask about people's reasons for wanting to successfully complete probation. Substance-using probationers (N=113) participated in a web-based computer intervention that targeted substance use and treatment initiation. Questions around seven dimensions of reasons for completing probation were developed to provide tailored feedback during the web-based program...
January 6, 2017: Evaluation and Program Planning
https://www.readbyqxmd.com/read/28088551/individual-and-sex-differences-in-high-and-low-responder-phenotypes
#6
María B Carreira, Ricardo Cossio, Gabrielle B Britton
Individual differences in responses to a novel environment are an important tool to predict predisposition to neuropsychiatric disorders. One way to examine individual differences involves classifying animals based on locomotion in a novel context. In this study we focused on individual and sex differences by categorizing female and male mice as high (HR) or low responders (LR) on the basis of open field locomotion. We then assessed whether groups differed on behavioral measures of spontaneous alternations, anxiety, depression and contextual fear conditioning...
January 11, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28088542/interaction-of-earthworms-microbe-facilitating-biofilm-dewaterability-performance-during-wasted-activated-sludge-reduction-and-stabilization
#7
Yadan Zheng, Meiyan Xing, Luziyu Cai, Tao Xiao, Yufan Lu, Jinzhou Jiang
Sludge dewaterability was chemically and morphologically explored during sewage sludge treatment by vermifiltration. The results, with a conventional biofilter (BF, no earthworms) as a control, demonstrated that the capillary suction time(CST) and specific resistance of filtration(SRF) of vermifilter (VF, with earthworms) treated sludge were 64.9±1.7s and (23.1±1.3)×10(12)m/kg,16.8% and 36.0% lower than that of the BF, respectively. Additionally, the VF could efficiently decompose loosely bound extracellular polymeric substances (LB-EPS), releasing more water trapped inside biofilm...
January 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28088502/the-nucleotide-changes-within-hbv-core-promoter-precore-during-the-first-12weeks-of-nucleos-t-ide-treatment-might-be-associated-with-a-better-virological-response
#8
Yaqin Peng, Yutang Li, Jinlin Hou, Jian Sun, Mingze Su, Yao Li, Kuanhui Xiang, Ling Yan, Hui Zhuang, Tong Li
OBJECTIVES: We aimed to study the dynamic changes of hepatitis B virus (HBV) core promoter/precore (CP/preC) sequences during antiviral treatment and their associations with virological responses. MATERIALS AND METHODS: The baseline and 12-week CP/preC sequences (nts 1655-2014) were obtained from 52 chronic hepatitis B patients with positive hepatitis B e antigen (HBeAg), who received a 104-week lamivudine and adefovir dipivoxil combination therapy. The mutations within the CP/preC were analyzed against genotype specific reference sequences...
January 11, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28088423/effects-of-rumen-protected-capsicum-oleoresin-on-productivity-and-responses-to-a-glucose-tolerance-test-in-lactating-dairy-cows
#9
J Oh, M Harper, F Giallongo, D M Bravo, E H Wall, A N Hristov
The objective of this experiment was to investigate the effects of rumen-protected Capsicum oleoresin (RPC) supplementation on feed intake, milk yield and composition, nutrient utilization, fecal microbial ecology, and responses to a glucose tolerance test in lactating dairy cows. Nine multiparous Holstein cows were used in a replicated 3 × 3 Latin square design balanced for residual effects with three 28-d periods. Each period consisted of 14 d for adaptation and 14 d for data collection and sampling. Treatments were 0 (control), 100, and 200 mg RPC/cow per day...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088422/effects-of-clay-after-an-aflatoxin-challenge-on-aflatoxin-clearance-milk-production-and-metabolism-of-holstein-cows
#10
S A Sulzberger, S Melnichenko, F C Cardoso
Oral supplementation of clay to dairy cattle has been reported to reduce toxicity of aflatoxin (AF) in contaminated feed. The objective of this study was to determine the effects of 3 concentrations of dietary clay supplementation in response to an AF challenge. Ten multiparous rumen-cannulated Holstein cows [body weight (mean ± SD) = 669 ± 20 kg and 146 ± 69 d in milk], were assigned to 1 of 5 treatments in a randomized replicated 5 × 5 Latin square design balanced to measure carryover effects. Periods (21 d) were divided in an adaptation phase (d 1 to 14) and a measurement phase (d 15 to 21)...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088416/space-allowance-influences-individually-housed-holstein-bull-calf-innate-immune-measures-and-standing-behaviors-after-castration-at-3-weeks-of-age
#11
M S Calvo-Lorenzo, L E Hulbert, M A Ballou, A L Fowler, Y Luo, K C Klasing, F M Mitloehner
Dairy calves in the Southwest regions of the United States are typically raised individually in wooden hutches with 1.23 m(2) of space. The objective of the study was to determine if increased space allowance in wooden hutches influences measures of innate immunity and behaviors of Holstein bull calves pre- and postcastration. Calves were randomly assigned at 4 d of age to conventional (CONV; 1.23 m(2) of space; n = 18), moderate (MOD; 1.85 m(2) space; n = 17), or maximized space allowance (MAX; 3.71 m(2) space; n = 19) in hutches...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088313/q-space-myelin-map-imaging-for-longitudinal-analysis-of-demyelination-and-remyelination-in-multiple-sclerosis-patients-treated-with-fingolimod-a-preliminary-study
#12
Mariko Tanikawa, Jin Nakahara, Junichi Hata, Shigeaki Suzuki, Kanehiro Fujiyoshi, Hirokazu Fujiwara, Suketaka Momoshima, Masahiro Jinzaki, Masaya Nakamura, Hideyuki Okano, Shinichi Takahashi, Norihiro Suzuki
BACKGROUND: Fingolimod (FTY) is an oral sphingosine-1-phosphate receptor modulator that reduces relapse and slows brain atrophy in multiple sclerosis (MS) patients. In addition, FTY has been shown to enhance remyelination in certain animal models. OBJECTIVE: To analyze feasibility of a novel q-space Myelin Map imaging to monitor demyelination and remyelination under FTY treatment in MS patients. METHODS: Treatment outcomes of 24 consecutive MS patients treated with FTY were analyzed...
January 5, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28088192/nucleotide-diversity-inflation-as-a-genome-wide-response-to-experimental-lifespan-extension-in-drosophila-melanogaster
#13
Pawel Michalak, Lin Kang, Pernille M Sarup, Mads F Schou, Volker Loeschcke
BACKGROUND: Evolutionary theory predicts that antagonistically selected alleles, such as those with divergent pleiotropic effects in early and late life, may often reach intermediate population frequencies due to balancing selection, an elusive process when sought out empirically. Alternatively, genetic diversity may increase as a result of positive frequency-dependent selection and genetic purging in bottlenecked populations. RESULTS: While experimental evolution systems with directional phenotypic selection typically result in at least local heterozygosity loss, we report that selection for increased lifespan in Drosophila melanogaster leads to an extensive genome-wide increase of nucleotide diversity in the selected lines compared to replicate control lines, pronounced in regions with no or low recombination, such as chromosome 4 and centromere neighborhoods...
January 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28088167/randomized-double-blind-placebo-controlled-clinical-trial-to-assess-the-safety-and-effectiveness-of-a-novel-dual-action-oral-topical-formulation-against-upper-respiratory-infections
#14
Pranab K Mukherjee, Frank Esper, Ken Buchheit, Karen Arters, Ina Adkins, Mahmoud A Ghannoum, Robert A Salata
BACKGROUND: Current prevention options for upper respiratory infections (URIs) are not optimal. We conducted a randomized, double-blinded, placebo-controlled pilot clinical trial to evaluate the safety and efficacy of ARMS-I™ (currently marketed as Halo™) in the prevention of URIs. METHODS: ARMS-I is patented novel formulation for the prevention and treatment of influenza, comprising a broad-spectrum antimicrobial agent (cetylpyridinium chloride, CPC) and components (glycerin and xanthan gum) that form a barrier on the host mucosa, thus preventing viral contact and invasion...
January 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28088151/phase-transition-of-a-symmetric-diblock-copolymer-induced-by-nanorods-with-different-surface-chemistry
#15
Yu-Qi Guo, Jun-Xing Pan, Min-Na Sun, Jin-Jun Zhang
We investigate the phase transition of a symmetric diblock copolymer induced by nanorods with different surface chemistry. The results demonstrate that the system occurs the phase transition from a disordered structure to ordered parallel lamellae and then to the tilted layered structure as the number of rods increases. The dynamic evolution of the domain size and the order parameter of the microstructure are also examined. Furthermore, the influence of rod property, rod-phase interaction, rod-rod interaction, rod length, and polymerization degree on the behavior of the polymer system is also investigated systematically...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28088050/pharmacists-knowledge-of-issues-in-pharmacotherapy-of-epilepsy-using-antiepileptic-drugs-a-cross-sectional-study-in-palestinian-pharmacy-practice
#16
Ramzi Shawahna, Ahlam Atrash, Aman Jebril, Areen Khalaf, Eman Shaheen, Hala Tahboosh
OBJECTIVE: Antiepileptic drugs (AEDs) are mainstay in controlling epileptic seizures. As experts in medications, pharmacists should be able to ensure accuracy of dosing regimens, explain adverse effects, and screen for and alert people with epilepsy (PWE) and their physicians to possible drug-drug interactions (DDIs). The aim of this study was to evaluate pharmacists' knowledge of issues in pharmacotherapy of epilepsy using AEDs. METHODS: This was a cross-sectional observational study conducted in the Palestinian pharmacy practice...
January 11, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28087799/factors-associated-with-high-risk-alcohol-consumption-among-lgb-older-adults-the-roles-of-gender-social-support-perceived-stress-discrimination-and-stigma
#17
Amanda E B Bryan, Hyun-Jun Kim, Karen I Fredriksen-Goldsen
PURPOSE OF THE STUDY: Lesbian, gay, and bisexual (LGB) adults have elevated rates of high-risk alcohol consumption compared with heterosexual adults. Although drinking tends to decline with age in the general population, we know little about LGB older adults' drinking. Using 2014 data from Aging with Pride: National Health, Aging, and Sexuality/Gender Study (NHAS), we aimed to identify factors associated with high-risk drinking in LGB older adults. DESIGN AND METHODS: A U...
February 2017: Gerontologist
https://www.readbyqxmd.com/read/28087780/oncogenes-without-a-neighboring-tumor-suppressor-gene-are-more-prone-to-amplification
#18
William K K Wu, Xiangchun Li, Xiansong Wang, Rudin Z W Dai, Alfred S L Cheng, Maggie H T Wang, Thomas Kwong, Tai C Chow, Jun Yu, Matthew T V Chan, Sunny H Wong
Focal copy number gains or losses are important genomic hallmarks of cancer. The genomic distribution of oncogenes and tumor-suppressor genes (TSG) in relation to focal copy number aberrations is unclear. Our analysis revealed that the mean distance of TSGs from oncogenes was significantly shorter than that of non-cancer genes, suggesting that oncogenes and TSGs tend to be in close physical proximity in the human genome. Such relationship was conserved in mouse and drosophila. Pan-cancer analysis using data from The Cancer Genome Atlas indicated that oncogenes without a nearby TSG are more prone to amplification...
January 12, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28087523/use-of-acupuncture-in-the-usa-changes-over-a-decade-2002-2012
#19
Jia Cui, Shaobai Wang, Jiehui Ren, Jun Zhang, Jun Jing
BACKGROUND: The use of acupuncture has gained popularity in the USA. The number of acupuncture users and licensed acupuncturists increased by 50% and 100%, respectively, between 2002 and 2012, coinciding with increasing acknowledgement of the importance and efficacy of acupuncture over this time period. METHODS: This paper presents new findings from the complementary health approaches section of the 2012 National Health Interview Survey (n=33 373 respondents)...
January 13, 2017: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/28087514/the-influence-of-meteorological-factors-and-atmospheric-pollutants-on-the-risk-of-preterm-birth
#20
Lise Giorgis-Allemand, Marie Pedersen, Claire Bernard, Inmaculada Aguilera, Rob M J Beelen, Leda Chatzi, Marta Cirach, Asta Danileviciute, Audrius Dedele, Manon van Eijsden, Marisa Estarlich, Ana Fernández-Somoano, Mariana F Fernández, Francesco Forastiere, Ulrike Gehring, Regina Grazuleviciene, Olena Gruzieva, Barbara Heude, Gerard Hoek, Kees de Hoogh, Edith H van den Hooven, Siri E Håberg, Carmen Iñiguez, Vincent W V Jaddoe, Michal Korek, Aitana Lertxundi, Johanna Lepeule, Per Nafstad, Wenche Nystad, Evridiki Patelarou, Daniela Porta, Dirkje Postma, Ole Raaschou-Nielsen, Peter Rudnai, Valérie Siroux, Jordi Sunyer, Euripides Stephanou, Mette Sørensen, Kirsten Thorup Eriksen, Derek Tuffnell, Mihály J Varró, Tanja G M Vrijkotte, Alet Wijga, John Wright, Mark J Nieuwenhuijsen, Göran Pershagen, Bert Brunekreef, Manolis Kogevinas, Rémy Slama
Atmospheric pollutants and meteorological conditions are suspected to be causes of preterm birth. We aimed to characterize their possible association with the risk of preterm birth (defined as birth occurring before 37 completed gestational weeks). We pooled individual data from 13 birth cohorts in 11 European countries (71,493 births from the period 1994-2011, European Study of Cohorts for Air Pollution Effects (ESCAPE)). City-specific meteorological data from routine monitors were averaged over time windows spanning from 1 week to the whole pregnancy...
January 13, 2017: American Journal of Epidemiology
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