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https://www.readbyqxmd.com/read/29028560/racial-discrimination-and-cortisol-output-a-meta-analysis
#1
REVIEW
Kevin M Korous, José M Causadias, Deborah M Casper
RATIONALE: Although the relation between stress and physiology is well documented, attempts at understanding the link between racial discrimination and cortisol output, specifically, have produced mixed results, likely due to study characteristics such as racial/ethnic composition of the samples (e.g., African American, Latino), measures of discrimination, and research design (e.g., cross-sectional, experimental). OBJECTIVES: To estimate the overall association between racial discrimination and cortisol output among racial/ethnic minority individuals and to determine if the association between racial discrimination and cortisol output is moderated by age, race/ethnicity, type of discrimination measure, sex, and research design...
September 27, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/29028299/environmental-engineering-of-pd-nanoparticle-catalysts-for-catalytic-hydrogenation-of-co2-and-bicarbonate
#2
Li-Chen Lee, Xiaoyu Xing, Yan Zhao
The extraordinary catalytic properties of enzymes are derived not only from their catalytic groups but also the unique properties of the active site. Tuning the microenvironment of synthetic catalysts is expected to enhance their performance if effective strategies can be developed. Interfacially cross-linked reverse micelles were prepared from three different cross-linkable surfactants. Pd nanoparticles were deposited in the core of the micelle for the catalytic hydrogenation of bicarbonate and CO2. The catalytic performance was found to depend heavily on the nature of the headgroup of the surfactant...
October 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29027785/chemically-cross-linked-mof-membrane-generated-from-imidazolium-based-ionic-liquid-decorated-uio-66-type-nmof-and-its-application-toward-co2-separation-and-conversion
#3
Bing-Jian Yao, Luo-Gang Ding, Fei Li, Jiang-Tao Li, Qi-Juan Fu, Yujie Ban, Ang Guo, Yu-Bin Dong
CO2 capture and transformation are of great importance to make cuts in greenhouse gas emissions. Nano metal-organic frameworks (NMOFs) could serve as the ideal fillers for polymer-membranes owing to their structural diversity and regulable micro-environment of the nanocage. Herein, a bifunctional robust and chemically cross-linked NMOF-based membrane was successfully constructed by the post-synthetic polymerization of imidazolium-based ionic liquid decorated UiO-66 type nanoparticles (NPs) and isocyanate-terminated polyurethane oligomer under mild condition...
October 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29027296/monomer-protonation-dependent-surface-polymerization-to-achieve-one-step-grafting-cross-linked-poly-4-vinylpyridine-onto-core-shell-fe3-o4-sio2-nanoparticles
#4
Kesong Tian, Ruifei Li, Haiyan Wang, Yan Chen, Wanchun Guo, Yaqi Wang, Zhaopeng Xu
Functional polymer-grafting silica nanoparticles hold great promise in diverse applications such as molecule recognition, drug delivery, and heterogeneous catalysis due to high density and uniform distribution of functional groups and their tunable spatial distance. However, conventional grafting methods from monomers mainly consist of one or more extra surface modification steps and a subsequent surface polymerization step. A monomer protonation-dependent surface polymerization strategy is proposed to achieve one-step uniform surface grafting of cross-linked poly(4-vinylpyridine) (P4VP) onto core-shell Fe3 O4 @SiO2 nanostructures...
October 13, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29027284/polydopamine-particles-reinforced-poly-vinyl-alcohol-hydrogel-with-nir-light-triggered-shape-memory-and-self-healing-capability
#5
Li Yang, Zhanhua Wang, Guoxia Fei, Hesheng Xia
This study focuses on developing a facile approach to prepare biocompatible poly(vinyl alcohol) (PVA) composite hydrogels containing polydopamine particles (PDAPs) with ultrafast near-infrared (NIR) light-triggered shape memory and self-healing capability. The PVA-PDAPs composite hydrogels with excellent mechanical properties can be achieved after freezing/thawing treatment, and the formation of physically cross-linked networks from the hydrogen bonding (H-bonding) between PVA and PDAPs. Due to the excellent photothermal effect of polydopamine, the composited hydrogel can achieve rapid shape recovery and efficient self-healing properties under NIR light exposure in a short time...
October 13, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29027173/native-chromatin-immunoprecipitation-sequencing-chip-seq-from-low-cell-numbers
#6
Teodora Ribarska, Gregor D Gilfillan
ChIP-seq is the current method of choice for genome-wide protein location analysis. Here, we present a native (non-cross-linked) ChIP procedure suitable for histone proteins, coupled with an efficient library preparation technique for subsequent next-generation sequencing. The method enables ChIP-seq starting with 50,000 or more cells.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29026728/analysis-of-the-relationship-between-sleep-duration-and-body-mass-index-in-a-south-korean-adult-population-a-propensity-score-matching-approach
#7
Baksun Sung
BACKGROUND: One-third of the present adults in South Korea are obese, and previous studies have demonstrated that sleep duration is considered a risk factor for obesity. Hence, I assessed the relationship between sleep duration and body mass index in a South Korean adult population. METHODS: This cross-sectional study consists of a representative sample of 4,218 South Korean adults (20-64 years) who participated in the sixth Korea National Health and Nutrition Examination Survey (2015)...
July 2017: Journal of Lifestyle Medicine
https://www.readbyqxmd.com/read/29026647/progress-in-development-of-bioderived-materials-for-dermal-wound-healing
#8
REVIEW
Lin-Cui Da, Yi-Zhou Huang, Hui-Qi Xie
Treatment of acute and chronic wounds is one of the primary challenges faced by doctors. Bioderived materials have significant potential clinical value in tissue injury treatment and defect reconstruction. Various strategies, including drug loading, addition of metallic element(s), cross-linking and combining two or more distinct types of materials with complementary features, have been used to synthesize more suitable materials for wound healing. In this review, we describe the recent developments made in the processing of bioderived materials employed for cutaneous wound healing, including newly developed materials such as keratin and soy protein...
October 2017: Regenerative Biomaterials
https://www.readbyqxmd.com/read/29026060/unmet-needs-in-health-training-among-nurses-in-rural-chinese-township-health-centers-a-cross-sectional-hospital-based-study
#9
Yan Mo, Guijie Hu, Yanhua Yi, Yanping Ying, Huiqiao Huang, Zhongxian Huang, Jiafeng Lin
Purpose: Maintaining a sufficient and competent rural nursing workforce is important in Chinese health delivery system. However, few studies have involved in the health training status and needs assessment of rural Chinese nurses in great transformations of health policy. This study is to explore the current health training status and to ascertain needs perceived by nurses working in rural Chinese township health centers (THCs). Methods: A cross-sectional survey using a self-administered structured questionnaire was conducted to 240 THC nurses in Guangxi Zhuang Autonomous region, China from March 2014 to August 2014...
October 4, 2017: Journal of Educational Evaluation for Health Professions
https://www.readbyqxmd.com/read/29025684/ninety-day-readmission-and-long-term-mortality-in-medicare-patients-%C3%A2-65-years-treated-with-ticagrelor-versus-prasugrel-after-percutaneous-coronary-intervention-from-the-blue-cross-blue-shield-of-michigan-cardiovascular-consortium
#10
Chris Song, Devraj Sukul, Milan Seth, James M Dupree, Akshay Khandelwal, Simon R Dixon, David Wohns, Thomas LaLonde, Hitinder S Gurm
Ticagrelor and prasugrel were found to be superior to clopidogrel for the treatment of acute coronary syndrome (ACS) after percutaneous coronary intervention (PCI); however, the comparative effectiveness of these 2 drugs remains unknown. We compared postdischarge outcomes among older patients treated with ticagrelor versus prasugrel after PCI for ACS. We linked clinical data from PCIs performed in older patients (age ≥65) for ACS at 47 Michigan hospitals to Medicare fee-for-service claims from January 1, 2013, to December 31, 2014, to ascertain rates of 90-day readmission and long-term mortality...
August 30, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29025662/synthesis-and-characterization-of-a-novel-double-cross-linked-hydrogel-based-on-diels-alder-click-reaction-and-coordination-bonding
#11
Shubin Li, Lu Wang, Xuemei Yu, Chengli Wang, Zhenyu Wang
Hydrogels, promising biological materials, need to have both strong mechanical properties and also inherent self-healing properties. In this work a double cross-linked network (DN) hydrogel was designed and prepared by combining a Diels-Alder click reaction and coordination effects. This DN hydrogel had good thermodynamic properties, anti-EDTA performance and self-healing properties. In addition, the mechanical properties, swelling properties and surface morphology of DN hydrogels can be controlled by adjusting the ratio of Fe(3+)-catechol...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025391/identification-of-putative-markers-linked-to-grain-plumpness-in-rice-oryza-sativa-l-via-association-mapping
#12
Erbao Liu, Siyuan Zeng, Xiangong Chen, Xiaojing Dang, Lijun Liang, Hui Wang, Zhiyao Dong, Yang Liu, Delin Hong
BACKGROUND: Poor grain plumpness (GP) is one of the main constraints to reaching the yield potential of hybrid rice. RESULTS: In this study, the GP of 177 rice varieties was investigated in three locations across 2 years. By combining the genotype data of 261 simple sequence repeat (SSR) markers, association mapping was conducted to identify the marker-GP association loci. Among 31 marker-GP association loci detected in two or more environments and determined using general linear model (GLM) analyses, seven association loci were also detected using mixed linear model (MLM) analyses...
October 12, 2017: BMC Genetics
https://www.readbyqxmd.com/read/29025328/safety-assessment-of-cross-linked-alkyl-acrylates-as-used-in-cosmetics
#13
Monice M Fiume, Bart Heldreth, Ivan Boyer, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, F Alan Andersen
The Cosmetic Ingredient Review (CIR) Expert Panel assessed the safety of cross-linked alkyl acrylates as used in cosmetics. The 23 cross-linked alkyl acrylates included in this safety assessment are reported to function as absorbents, film formers, emulsion stabilizers, viscosity increasing agents, suspending agents, binders, and/or skin-conditioning agents. The Panel reviewed available animal and clinical data, as well as information from previous CIR reports on monomer components. Because data were not available for the individual ingredients, and because residual monomer may be present, the Panel extrapolated from previous reports to support safety...
September 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/29025150/collection-and-determinants-of-patient-reported-outcome-measures-in-haemodialysis-patients-in-scotland
#14
Ailish Nimmo, Samira Bell, Carol Brunton, Jacqueline Campbell, Arthur Doyle, Bruce MacKinnon, Robert K Peel, Susan Robertson, Ilona Shilliday, Elaine Spalding, Jamie P Traynor, Wendy Metcalfe
Background: Patient reported outcome measures (PROMs) can evaluate the quality of health in patients with established renal failure. There is limited experience of their use within national renal registries. Aim: To describe the Scottish Renal Registry's (SRR) experience of collecting PROMS in the haemodialysis population and correlate PROMS to demographic and clinical parameters. Design: Retrospective observational cross-sectional study. Methods: Haemodialysis patients in Scotland were invited to complete the KDQOL™-36 questionnaire on the day of the annual SRR census in 2015 and 2016...
September 18, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29024928/zinc-inhibits-collagenolysis-by-cathepsin-k-and-matrix-metalloproteinases-in-demineralized-dentin-matrix
#15
Pinar Altinci, Roda Seseogullari-Dirihan, Gulsen Can, David Pashley, Arzu Tezvergil-Mutluay
The enzymatic degradation of dentin organic matrix occurs via both the action of matrix metalloproteinases (MMPs) and cysteine cathepsins (CCs). Zinc can prevent collagen hydrolysis by MMPs. However, its effect on the activity of dentin-bound CCs is not known. The aim of this study was to investigate the effect of zinc on matrix-bound cathepsin K and MMP activity in dentin. Completely demineralized dentin beams were divided into test groups (n = 9) and incubated at 37°C in an incubation media (1 mL) containing ZnCl2 of 0...
October 13, 2017: Caries Research
https://www.readbyqxmd.com/read/29024806/dimerization-and-oxidation-of-tryptophan-in-uv-a-photolysis-sensitized-by-kynurenic-acid
#16
Ekaterina D Sormacheva, Peter S Sherin, Yuri P Tsentalovich
Photoinduced generation of radicals in the eye lens may play an important role in the modification of proteins, leading to their coloration, aggregation, and insolubilization. The radicals can be formed via the reactions of photoexcited endogenous chromophores of the human lens with lens proteins, in particular with tryptophan residues. In the present work we studied the reactions induced by UV-A (315-400nm) light between kynurenic acid (KNA), an effective photosensitizer present in the lens, and N-acetyl-L-tryptophan (NTrpH) under aerobic and anaerobic conditions...
October 9, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29024724/paxgene-fixation-enables-comprehensive-metabolomic-and-proteomic-analyses-of-tissue-specimens-by-maldi-msi
#17
Christian Urban, Achim Buck, Jens T Siveke, Florian Lordick, Birgit Luber, Axel Walch, Michaela Aichler
An alcohol-based non-crosslinking tissue fixative, PAXgene Tissue System, has been proposed as alternative fixation method to formalin, providing superior and morphological preservation. To date, metabolites have not been assessed in PAXgene-fixed tissues. The study focuses on a comparison between PAXgene and standard formalin fixation for metabolomic analysis by MALDI mass spectrometry imaging. Therefore, fifty-six samples from seven mice organs were fixed with PAXgene (PFPE) or formalin (FFPE), embedded in paraffin, and processed to a tissue microarray...
October 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29024447/the-influences-of-a-novel-anti-adhesion-device-thermally-cross-linked-gelatin-film-on-peritoneal-dissemination-of-tumor-cells-the-in-vitro-and-in-vivo-experiments-using-murine-carcinomatous-peritonitis-models
#18
Hiroe Miyamoto, Hiroyuki Tsujimoto, Tsunehito Horii, Yuki Ozamoto, Joe Ueda, Toshitaka Takagi, Naoto Saitoh, Akeo Hagiwara
To create anti-adhesive materials to be more effective and safer, we developed a thermally cross-linked gelatin film that showed superior anti-adhesive effects with excellent peritoneal regeneration. However, it may act as a convenient scaffold for tumor cell growth, thereby accelerating peritoneal dissemination when used in surgery for abdominal tumors. In this study, we tried to clarify this issue using mouse carcinomatous peritonitis models. First, we examined the in vitro tumor cell growth of mouse B16 melanoma or Colon26 cells on the gelatin film or the conventional hyarulonate/carboxymethylcellulose film...
October 10, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29024100/an-all-integrated-anode-via-interlinked-chemical-bonding-between-double-shelled-yolk-structured-silicon-and-binder-for-lithium-ion-batteries
#19
Yajie Liu, Zhixin Tai, Tengfei Zhou, Vitor Sencadas, Jian Zhang, Lei Zhang, Konstantin Konstantinov, Zaiping Guo, Hua Kun Liu
The concept of an all-integrated design with multifunctionalization is widely employed in optoelectronic devices, sensors, resonator systems, and microfluidic devices, resulting in benefits for many ongoing research projects. Here, maintaining structural/electrode stability against large volume change by means of an all-integrated design is realized for silicon anodes. An all-integrated silicon anode is achieved via multicomponent interlinking among carbon@void@silica@silicon (CVSS) nanospheres and cross-linked carboxymethyl cellulose and citric acid polymer binder (c-CMC-CA)...
October 12, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29024005/functional-limitations-among-responders-to-the-world-trade-center-attacks-14-years-after-the-disaster-implications-of-chronic-posttraumatic-stress-disorder
#20
Sean A P Clouston, Jack M Guralnik, Roman Kotov, Evelyn J Bromet, Benjamin J Luft
Posttraumatic stress disorder (PTSD) is associated with self-reported difficulties navigating the social and physical world and may also be associated with risk of functional limitations. The Short Physical Performance Battery (SPPB), an objective functional assessment, was administered during monitoring exams between January and December 2015 to a consecutive sample of 1,268 rescue workers, volunteers, and other responders who had aided in response, recovery, and cleanup efforts at the World Trade Center (WTC) in New York after the September 11, 2011 attacks...
October 12, 2017: Journal of Traumatic Stress
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