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https://www.readbyqxmd.com/read/27906402/one-step-synthesis-of-ultrathin-ptxpb-nerve-like-nanowires-as-robust-catalysts-for-enhanced-methanol-electrooxidation
#1
Liang Huang, Yujie Han, Xueping Zhang, Youxing Fang, Shaojun Dong
Ultrathin PtxPb nerve-like nanowires (NNWs) with a diameter of only around 3.6 nm were synthesized by a one-step wet-chemical strategy, and they served as robust catalysts for greatly enhancing methanol electrooxidation both under acidic and alkaline conditions. Due to the high CO-poisoning tolerance, superior electrocatalytic activity and stability endowed by the Pt-Pb alloyed composition and the unique structure, the Pt3.5Pb NNWs showed the highest specific activity of 2.78 mA cm(-2) in acidic media and 6...
December 1, 2016: Nanoscale
https://www.readbyqxmd.com/read/27905913/sera-from-severe-trauma-patients-with-pneumonia-and-without-infectious-complications-have-differential-effects-on-neutrophil-biology
#2
B Relja, R Taraki, M P J Teuben, K Mörs, N Wagner, S Wutzler, F Hildebrand, M Perl, I Marzi
BACKGROUND: Major trauma patients (TP) developing imbalanced immune response are at high risk for infectious post-injury complications including pneumonia. Neutrophils play a central role in the host defense against bacteria and thereby pathogenesis of infections. While there are numerous studies about neutrophil function after trauma, data about their biology in patients who suffer from pneumonia following trauma are sparse. Here, we studied the effect of serum isolated from patients who do and do not develop infection (inf...
December 1, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27899885/interacting-cannabinoid-and-opioid-receptors-in-the-nucleus-accumbens-core-control-adolescent-social-play
#3
Antonia Manduca, Olivier Lassalle, Marja Sepers, Patrizia Campolongo, Vincenzo Cuomo, Giovanni Marsicano, Brigitte Kieffer, Louk J M J Vanderschuren, Viviana Trezza, Olivier J J Manzoni
Social play behavior is a highly rewarding, developmentally important form of social interaction in young mammals. However, its neurobiological underpinnings remain incompletely understood. Previous work has suggested that opioid and endocannabinoid neurotransmission interact in the modulation of social play. Therefore, we combined behavioral, pharmacological, electrophysiological, and genetic approaches to elucidate the role of the endocannabinoid 2-arachidonoylglycerol (2-AG) in social play, and how cannabinoid and opioid neurotransmission interact to control social behavior in adolescent rodents...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27892769/circrnas-in-the-brain
#4
Mor Hanan, Hermona Soreq, Sebastian Kadener
Circular RNAs (circRNAs) are highly abundant and evolutionarily conserved non-coding RNAs produced by circularization of specific exons. Since their re-discovery as potential regulators of gene expression, thousands of circRNAs were detected in different tissues and cell types across most organisms. Accumulating data suggest key roles for them in the central nervous system. Neuronal-expressed RNAs are diverted to yield highly enriched CircRNAs in human, mouse, pig and flies, with many of them enriched in neuronal tissues...
November 28, 2016: RNA Biology
https://www.readbyqxmd.com/read/27890744/gene-expression-of-pro-opiomelanocortin-and-melanocortin-receptors-is-regulated-in-the-hypothalamus-and-mesocorticolimbic-system-following-nicotine-administration
#5
Damla E Tapinc, Rabia Ilgin, Egemen Kaya, Oguz Gozen, Muzeyyen Ugur, Ersin O Koylu, Lutfiye Kanit, Aysegul Keser, Burcu Balkan
Pro-opiomelanocortin (POMC)-derived peptides and their receptors have been shown to play important roles in natural and drug-induced reward and reinforcement. Reward process may involve the regulation of POMC gene expression and the gene expression of POMC-derived peptide receptors. The present study investigated the alterations observed in the transcript levels of POMC, melanocortin 3 (MC3R), melanocortin 4 (MC4R) and mu-opioid receptors (MOR) in the hypothalamus and mesocorticolimbic system during nicotine exposure...
November 24, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27889677/blood-dna-methylation-age-is-not-associated-with-cognitive-functioning-in-middle-aged-monozygotic-twins
#6
A Starnawska, Q Tan, A Lenart, M McGue, O Mors, A D Børglum, K Christensen, M Nyegaard, L Christiansen
The epigenetic clock, also known as DNA methylation age (DNAmAge), represents age-related changes of DNA methylation at multiple sites of the genome and is suggested to be a biomarker for biological age. Elevated blood DNAmAge is associated with all-cause mortality, with the strongest effects reported in a recent intrapair twin study where epigenetically older twins had increased mortality risk in comparison to their co-twins. In the study presented here, we hypothesize that DNAmAge in blood is associated with cross-sectional and longitudinal cognitive abilities in middle-aged individuals...
November 4, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/27885709/the-median-hazard-ratio-a-useful-measure-of-variance-and-general-contextual-effects-in-multilevel-survival-analysis
#7
Peter C Austin, Philippe Wagner, Juan Merlo
Multilevel data occurs frequently in many research areas like health services research and epidemiology. A suitable way to analyze such data is through the use of multilevel regression models (MLRM). MLRM incorporate cluster-specific random effects which allow one to partition the total individual variance into between-cluster variation and between-individual variation. Statistically, MLRM account for the dependency of the data within clusters and provide correct estimates of uncertainty around regression coefficients...
November 25, 2016: Statistics in Medicine
https://www.readbyqxmd.com/read/27876874/twist1-drives-cisplatin-resistance-and-cell-survival-in-an-ovarian-cancer-model-via-upregulation-of-gas6-l1cam-and-akt-signalling
#8
Cai M Roberts, Michelle A Tran, Mary C Pitruzzello, Wei Wen, Joana Loeza, Thanh H Dellinger, Gil Mor, Carlotta A Glackin
Epithelial ovarian cancer (EOC) is the most deadly gynaecologic malignancy due to late onset of symptoms and propensity towards drug resistance. Epithelial-mesenchymal transition (EMT) has been linked to the development of chemoresistance in other cancers, yet little is known regarding its role in EOC. In this study, we sought to determine the role of the transcription factor TWIST1, a master regulator of EMT, on cisplatin resistance in an EOC model. We created two Ovcar8-derived cell lines that differed only in their TWIST1 expression...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27874242/template-framework-interactions-in-tetraethylammonium-directed-zeolite-synthesis
#9
Joel E Schmidt, Donglong Fu, Michael W Deem, Bert M Weckhuysen
Zeolites, having widespread applications in chemical industries, are often synthesized using organic templates. These can be cost-prohibitive, motivating investigations into their role in promoting crystallization. Herein, the relationship between framework structure, chemical composition, synthesis conditions and the conformation of the occluded, economical template tetraethylammonium (TEA(+) ) has been systematically examined by experimental and computational means. The results show two distinct regimes of occluded conformer tendencies: 1) In frameworks with a large stabilization energy difference, only a single conformer was found (BEA, LTA and MFI)...
November 22, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27870529/infections-and-exposure-to-anti-infective-agents-and-the-risk-of-severe-mental-disorders-a-nationwide-study
#10
O Köhler, L Petersen, O Mors, P B Mortensen, R H Yolken, C Gasse, M E Benros
OBJECTIVE: Severe infections are associated with increased risks of mental disorders; however, this is the first large-scale study investigating whether infections treated with anti-infective agents in the primary care setting increase the risks of schizophrenia and affective disorders. METHOD: We identified all individuals born in Denmark 1985-2002 (N = 1 015 447) and studied the association between infections treated with anti-infective agents and the subsequent risk of schizophrenia and affective disorders during 1995-2013...
November 21, 2016: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/27869740/functional-role-of-the-c-terminal-amphipathic-helix-8-of-olfactory-receptors-and-other-g-protein-coupled-receptors
#11
REVIEW
Takaaki Sato, Takashi Kawasaki, Shouhei Mine, Hiroyoshi Matsumura
G protein-coupled receptors (GPCRs) transduce various extracellular signals, such as neurotransmitters, hormones, light, and odorous chemicals, into intracellular signals via G protein activation during neurological, cardiovascular, sensory and reproductive signaling. Common and unique features of interactions between GPCRs and specific G proteins are important for structure-based design of drugs in order to treat GPCR-related diseases. Atomic resolution structures of GPCR complexes with G proteins have revealed shared and extensive interactions between the conserved DRY motif and other residues in transmembrane domains 3 (TM3), 5 and 6, and the target G protein C-terminal region...
November 18, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27861719/beta-blocker-use-in-u-s-nursing-home-residents-after-myocardial-infarction-a-national-study
#12
Andrew R Zullo, Yoojin Lee, Lori A Daiello, Vincent Mor, W John Boscardin, David D Dore, Yinghui Miao, Kathy Z Fung, Kiya D R Komaiko, Michael A Steinman
OBJECTIVES: To evaluate how often beta-blockers were started after acute myocardial infarction (AMI) in nursing home (NH) residents who previously did not use these drugs and to evaluate which factors were associated with post-AMI use of beta-blockers. DESIGN: Retrospective cohort using linked national Minimum Data Set assessments; Online Survey, Certification and Reporting records; and Medicare claims. SETTING: U.S. NHs. PARTICIPANTS: National cohort of 15,720 residents aged 65 and older who were hospitalized for AMI between May 2007 and March 2010, had not taken beta-blockers for at least 4 months before their AMI, and survived 14 days or longer after NH readmission...
November 15, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27858959/progression-from-unipolar-depression-to-schizophrenia
#13
Katherine L Musliner, Trine Munk-Olsen, Ole Mors, Søren D Østergaard
OBJECTIVE: To examine progression from unipolar depression (UD) to schizophrenia and to identify groups of UD patients at elevated risk for progression. METHOD: Historical prospective cohort study using data from Danish national registers. The sample included 71 932 individuals who received a diagnosis of UD in Denmark between January 1, 1995, and May 31, 2013. Analyses were conducted using Kaplan-Meier estimates and Cox regressions. RESULTS: The 18...
November 4, 2016: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/27849613/endogenous-central-amygdala-mu-opioid-receptor-signaling-promotes-sodium-appetite-in-mice
#14
Craig M Smith, Lesley L Walker, Tanawan Leeboonngam, Michael J McKinley, Derek A Denton, Andrew J Lawrence
Due to the importance of dietary sodium and its paucity within many inland environments, terrestrial animals have evolved an instinctive sodium appetite that is commensurate with sodium deficiency. Despite a well-established role for central opioid signaling in sodium appetite, the endogenous influence of specific opioid receptor subtypes within distinct brain regions remains to be elucidated. Using selective pharmacological antagonists of opioid receptor subtypes, we reveal that endogenous mu-opioid receptor (MOR) signaling strongly drives sodium appetite in sodium-depleted mice, whereas a role for kappa (KOR) and delta (DOR) opioid receptor signaling was not detected, at least in sodium-depleted mice...
November 14, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27847477/reverse-of-acute-and-chronic-morphine-tolerance-by-lithocholic-acid-via-down-regulating-ugt2b7
#15
Zizhao Yang, Li Li, Haihong Hu, Mingcheng Xu, Jingkai Gu, Zaijie Jim Wang, Lushan Yu, Su Zeng
Lithocholic acid (LCA) deposited in human livers always induces drastic pains which need analgesic drug, like morphine to release. Our research showed that LCA can effectively inhibit uridine 5'-diphospho-glucuronosyltransferase 2B7 (UGT2B7) in morphine tolerance-like human normal liver cells, HL-7702, then increase μ-opioid receptor (MOR) and calcium-calmodulin dependent protein kinase IIα (CaMKIIα) expression. In vivo assay, UGT2B7 was significantly repressed in the livers of acute or chronic morphine tolerance mice pretreated with LCA (10, 50, and 100 mg/kg, p...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27845154/herpes-zoster-as-a-marker-of-occult-cancer-a-systematic-review-and-meta-analysis
#16
REVIEW
S A J Schmidt, A Mor, H C Schønheyder, H T Sørensen, O M Dekkers, D Cronin-Fenton
OBJECTIVES: Researchers have advocated for an increased awareness of occult cancer among herpes zoster patients, but there are no systematic reviews to support these claims. We therefore conducted a systematic review and meta-analysis of evidence on zoster and risk of occult cancer. METHODS: Through February 18, 2016, we searched PubMed, EMBASE and references of relevant papers for studies on zoster and risk of any cancer. One author screened retrieved papers by title and abstract; included papers were reviewed by two authors for eligibility, data extraction, and potential biases...
November 11, 2016: Journal of Infection
https://www.readbyqxmd.com/read/27842940/nalmefene-for-the-management-of-alcohol-dependence-review-on-its-pharmacology-mechanism-of-action-and-meta-analysis-on-its-clinical-efficacy
#17
Karl Mann, Lars Torup, Per Sørensen, Antoni Gual, Robert Swift, Brendan Walker, Wim van den Brink
Nalmefene, a mu- and delta-opioid receptor (MOR, DOR) antagonist and a partial kappa-opioid receptor (KOR) agonist, is approved in the European Union and other countries for the reduction of alcohol consumption in alcohol dependent patients with a high drinking risk level according to WHO ("target population"). This review presents an overview of nalmefene׳s pharmacology, its mechanisms of action and a meta-analysis on its efficacy in reducing alcohol consumption. The review was based on a systematic search of the literature...
November 11, 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27842560/a-non-invasive-home-based-biomechanical-therapy-for-patients-with-spontaneous-osteonecrosis-of-the-knee
#18
Ehud Atoun, Amit Mor, Ganit Segal, Ronen Debi, Dan Grinberg, Yeshaiau Benedict, Nimrod Rozen, Yiftah Beer, Avi Elbaz
BACKGROUND: The purpose of the current study was to examine the effect of a non-invasive, home-based biomechanical treatment program for patients with spontaneous osteonecrosis of the knee (SONK). METHODS: Seventeen patients with SONK, confirmed by MRI, participated in this retrospective analysis. Patients underwent a spatiotemporal gait analysis and completed the Western Ontario and McMaster University Osteoarthritis Index (WOMAC) and the Short-Form-36 (SF-36)...
November 14, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27836661/phosphorylation-of-poly-rc-binding-protein-1-pcbp1-contributes-to-stabilization-of-mu-opioid-receptor-mor-mrna-via-interaction-with-au-rich-element-rna-binding-protein-1-auf1-and-poly-a-binding-protein-pabp
#19
Cheol Kyu Hwang, Yadav Wagley, Ping-Yee Law, Li-Na Wei, Horace H Loh
Gene regulation at the post-transcriptional level is frequently based on cis- and trans-acting factors on target mRNAs. We found a C-rich element (CRE) in mu-opioid receptor (MOR) 3'-untranslated region (UTR) to which poly (rC) binding protein 1 (PCBP1) binds, resulting in MOR mRNA stabilization. RNA immunoprecipitation and RNA EMSA revealed the formation of PCBP1-RNA complexes at the element. Knockdown of PCBP1 decreased MOR mRNA half-life and protein expression. Stimulation by forskolin increased cytoplasmic localization of PCBP1 and PCBP1/MOR 3'-UTR interactions via increased serine phosphorylation that was blocked by protein kinase A (PKA) or (phosphatidyl inositol-3) PI3-kinase inhibitors...
November 9, 2016: Gene
https://www.readbyqxmd.com/read/27834706/genome-sequence-of-a-potential-new-benyvirus-isolated-from-mango-rna-seq-data
#20
Noa Sela, Neta Luria, Mor Yaari, Dov Prusky, Aviv Dombrovsky
We report here the sequence of a new benyvirus found through mango cultivar Shelly RNA-seq analysis in Israel. This is the first virus strain reported in mango trees.
November 10, 2016: Genome Announcements
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