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https://www.readbyqxmd.com/read/29040802/freezing-temperatures-ice-nanotubes-structures-and-proton-ordering-of-tip4p-ice-water-inside-single-wall-carbon-nanotubes
#1
Pietro Pugliese, Maria Martin Conde, Mauro Rovere, Paola Gallo
A very recent experimental paper importantly and unexpectedly showed that water in carbon nanotubes is already in the solid ordered phase at the temperature where bulk water boils. The water models used so far in literature for molecular dynamics simulations in carbon nanotubes show freezing temperatures lower than the experiments. We present here results from molecular dynamics simulations of water inside single walled carbon nanotubes using an extremely realistic model for both liquid and icy water, the TIP4P/ICE...
October 17, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29040474/co-occurrence-of-genes-for-aerobic-and-anaerobic-biodegradation-of-dichloroethane-in-organochlorine-contaminated-groundwater
#2
Jacob E Munro, Önder Kimyon, Deborah J Rich, Joanna Koenig, Sihui Tang, Adrian Low, Matthew Lee, Mike Manefield, Nicholas V Coleman
1,2-dichloroethane (DCA) is a problematic groundwater pollutant. Factors influencing the distribution and activities of DCA-degrading bacteria are not well-understood, which has hampered their application for bioremediation. Here, we used quantitative PCR (qPCR) to investigate the distribution of putative DCA-dehalogenating bacteria at a DCA-impacted site in Sydney (Australia). The dehalogenase genes dhlA, tceA and bvcA were detected in all groundwater samples (n = 15), while vcrA was found in 11/15 samples...
October 12, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29040427/what-is-the-end-of-life-period-trajectories-and-characterization-based-on-primary-caregiver-reports
#3
Jiska Cohen-Mansfield, Rinat Cohen, Michal Skornick-Bouchbinder, Shai Brill
BACKGROUND: As the population lives longer, end of life (EOL) is emerging as a distinct life phase, about which there is still limited understanding. Characterizing this important period is vital for clarifying issues regarding trajectory and decline at EOL and for health service planning on an institutional, communal, and societal level. In this paper we aim to characterize the EOL period, examining the duration and number of EOL stages, as well as the functional, attitudinal and emotional trajectories...
October 12, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29039958/manginoids-a-g-seven-monoterpene-shikimate-conjugated-meroterpenoids-with-a-spiro-ring-system-from-guignardia-mangiferae
#4
Keliang Chen, Xuwen Zhang, Weiguang Sun, Junjun Liu, Jing Yang, Chunmei Chen, Xiulan Liu, Limin Gao, Jianping Wang, Hua Li, Zengwei Luo, Yongbo Xue, Hucheng Zhu, Yonghui Zhang
Manginoids A-G (1-7), seven monoterpene-shikimate-conjugated meroterpenoids with a spiro ring system, were isolated from Guignardia mangiferae. Compounds 1-4 are four isomers with epimeric and double-bond isomeric features possessing a 6-oxaspiro[bicyclo[3.2.1]octane-3,5'-indene] ring, which represent the first examples of spiro meroterpenoids bearing a bridged spirocyclohexanedione moiety. Compounds 5 and 6 possess an unexpected 2,4-dioxatricyclo[3.3.1.0(3,7)]nonane motif, which fuses with a 6-oxabicyclo[3...
October 17, 2017: Organic Letters
https://www.readbyqxmd.com/read/29036729/reversal-of-lung-fibrosis-an-unexpected-finding-in-survivor-of-acute-respiratory-distress-syndrome
#5
Chih-Hao Chang, Yu-Hsiang Juan, Han-Chung Hu, Kuo-Chin Kao, Chung-Shu Lee
No abstract text is available yet for this article.
October 3, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29036676/anti-crisprdb-a-comprehensive-online-resource-for-anti-crispr-proteins
#6
Chuan Dong, Ge-Fei Hao, Hong-Li Hua, Shuo Liu, Abraham Alemayehu Labena, Guoshi Chai, Jian Huang, Nini Rao, Feng-Biao Guo
CRISPR-Cas is a tool that is widely used for gene editing. However, unexpected off-target effects may occur as a result of long-term nuclease activity. Anti-CRISPR proteins, which are powerful molecules that inhibit the CRISPR-Cas system, may have the potential to promote better utilization of the CRISPR-Cas system in gene editing, especially for gene therapy. Additionally, more in-depth research on these proteins would help researchers to better understand the co-evolution of bacteria and phages. Therefore, it is necessary to collect and integrate data on various types of anti-CRISPRs...
September 25, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036520/lung-specific-overexpression-of-constitutively-active-ikk2-induces-pulmonary-and-systemic-inflammations-but-not-hypothalamic-inflammation-and-glucose-intolerance
#7
Minjie Chen, Huifen Zhou, Yanyi Xu, Lianglin Qiu, Ziying Hu, Xiaobo Qin, Sufang Chen, Yuhao Zhang, Qi Cao, Yousef Abu-Amer, Zhekang Ying
The lung is constantly exposed to ambient pollutants such as ambient fine particulate matter (PM2.5), making it one of the most frequent locations of inflammation in the body. Given the establishment of crucial role of inflammation in the pathogenesis of cardiometabolic diseases, pulmonary inflammation is thus widely believed to be an important risk factor for cardiometabolic diseases. However, the causality between them has not yet been well established. To determine if pulmonary inflammation is sufficient to cause adverse cardiometabolic effects, SFTPC-rtTA+/-tetO-cre+/-pROSA-inhibitor κB kinase 2(IKK2)ca+/- (LungIKK2ca) and littermate SFTPC-rtTA+/-tetO-cre-/-pROSA-IKK2ca+/- wildtype (WT) mice were fed with doxycycline diet to induce constitutively active Ikk2 (Ikk2ca) overexpression in the lung and their pulmonary, systemic, adipose, and hypothalamic inflammations, vascular function, and glucose homeostasis were assessed...
July 28, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29036498/british-widows-of-the-south-african-war-and-the-origins-of-war-widows-pensions
#8
Eliza Riedi
The South African War of 1899-1902 cost the lives of 22,000 British and colonial soldiers and created almost 5,000 British war widows. It was in this context that the first state pensions for the widows of rank and file soldiers were introduced in 1901. Triggered by unexpectedly high casualty rates and widespread dissatisfaction with charitable provision, the introduction of state pensions also reflected changing public attitudes towards soldiers and their dependants in the context of an imperial war. Dismissed in the historiography as insignificant because of its low rates and restrictive eligibility clauses, the 1901 scheme in fact delivered pensions to the majority of war widows and made the Edwardian state their most important source of financial support...
September 23, 2017: 20 Century British History
https://www.readbyqxmd.com/read/29036368/proteomic-identification-of-histone-post-translational-modifications-and-proteins-enriched-at-a-dna-double-strand-break
#9
Pingping Wang, Stephanie Byrum, Faith C Fowler, Sangita Pal, Alan J Tackett, Jessica K Tyler
Here, we use ChAP-MS (chromatin affinity purification with mass spectrometry), for the affinity purification of a sequence-specific single-copy endogenous chromosomal locus containing a DNA double-strand break (DSB). We found multiple new histone post-translational modifications enriched on chromatin bearing a DSB from budding yeast. One of these, methylation of histone H3 on lysine 125, has not previously been reported. Among over 100 novel proteins enriched at a DSB were the phosphatase Sit4, the RNA pol II degradation factor Def1, the mRNA export protein Yra1 and the HECT E3 ligase Tom1...
September 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036248/apremilast-and-narrowband-ultraviolet-b-combination-therapy-for-treating-moderate-to-severe-plaque-psoriasis
#10
Jerry Bagel, Elise Nelson, Brian R Keegan
BACKGROUND: Combining narrowband UVB (NB-UVB) phototherapy with biologics has been shown to enhance the therapeutic response of plaque psoriasis patients. The objective of this study was to evaluate the effectiveness of apremilast combined with NB-UVB in patients with moderate to severe plaque psoriasis. METHODS: This was a 12-week, open-label study of 29 patients diagnosed with moderate to severe psoriasis. Patients received apremilast 30 mg twice daily, and increasing doses of NB-UVB (310-312 nm) 3 times per week for 12 weeks...
October 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29036166/asymptotic-theory-of-circular-polarization-memory
#11
Julia P Dark, Arnold D Kim
We establish a quantitative theory of circular polarization memory, which is the unexpected persistence of the incident circular polarization state in a strongly scattering medium. Using an asymptotic analysis of the three-dimensional vector radiative transfer equation (VRTE) in the limit of strong scattering, we find that circular polarization memory must occur in a boundary layer near the portion of the boundary on which polarized light is incident. The boundary layer solution satisfies a one-dimensional conservative scattering VRTE...
September 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29035695/expression-of-macrophage-genes-within-skeletal-muscle-correlates-inversely-with-adiposity-and-insulin-resistance-in-humans
#12
Dongmei Liu, Flor Elisa Morales, Heidi B IglayReger, Mary K Treutelaar, Amy E Rothberg, Monica J Hubal, Evan P Nadler, Jacques Robidoux, Hisham Barakat, Jeffrey F Horowitz, Eric P Hoffman, Charles F Burant, Paul M Gordon
Background Local inflammation in obese adipose tissue has been shown to contribute to insulin resistance, however, the role of macrophage infiltration within skeletal muscle is still debateable. This study aimed to evaluate the association of skeletal muscle macrophage gene expression with adiposity levels and insulin sensitivity in obese patients. Methods Twenty-two non-diabetic obese patients and 23 healthy lean controls were included. Obese patients underwent a 3-month weight loss intervention. Macrophage gene expression in skeletal muscle (quantitative RT-PCR), body composition (DXA) and insulin sensitivity (homeostatic model assessment and oral glucose tolerance test) were compared between groups and their associations were analyzed...
October 16, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29035417/relative-performance-of-three-stream-bed-stability-indices-as-indicators-of-stream-health
#13
Paul C Kusnierz, Christopher M Holbrook
Bed stability is an important stream habitat attribute because it affects geomorphology and biotic communities. Natural resource managers desire indices of bed stability that can be used under a wide range of geomorphic conditions, are biologically meaningful, and are easily incorporated into sampling protocols. To eliminate potential bias due to presence of instream wood and increase precision of stability values, we modified a stream bed instability index (ISI) to include measurements of bankfull depth (d bf) and median particle diameter (D 50) only in riffles and increased the pebble count to decrease variability (i...
October 16, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29035223/fmprpmf-a-web-implementation-for-protein-identification-by-robust-peptide-mass-fingerprinting
#14
Youyuan Li, Yingping Zhuang
Peptide mass fingerprinting continues to play an important role in current proteomics studies based on its good performance in sample throughput, specificity for single peptides, and insensitive to unexpected post-translational modifications as compared with . Here, we proposed and evaluated the use of feature-matching pattern-based support vector machines (SVMs) for robust protein identification. This approach is now facilitated with an updated web server (fmpRPMF) incorporated with several newly developed or improved modules and workflows allowing identification of proteins from data...
October 13, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/29035174/in-male-rats-the-ability-of-central-insulin-to-suppress-glucose-production-is-impaired-by-olanzapine-whereas-glucose-uptake-is-left-intact
#15
Chantel Kowalchuk, Celine Teo, Virginia Wilson, Araba Chintoh, Loretta Lam, Sri Mahavir Agarwal, Adria Giacca, Gary J Remington, Margaret K Hahn
BACKGROUND: Insulin receptors are widely expressed in the brain and may represent a crossroad between metabolic and cognitive disorders. Although antipsychotics, such as olanzapine, are the cornerstone treatment for schizophrenia, they are associated with high rates of type 2 diabetes and lack efficacy for illness-related cognitive deficits. Historically, this risk of diabetes was attributed to the weight gain propensity of antipsychotics, but recent work suggests antipsychotics can have weight-independent diabetogenic effects involving unknown brain-mediated mechanisms...
October 16, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29034947/revealing-the-electronic-character-of-the-positive-electrode-electrolyte-interface-in-lithium-ion-batteries
#16
Giorgia Zampardi, Rafael Trocoli, Wolfgang Schuhmann, Fabio La Mantia
High voltage operating active materials are among the most promising components for positive electrodes of future high energy lithium-ion batteries. However, the operating potential range of such materials often exceeds anodically the thermodynamic stability window of the electrolyte. A surface layer is therefore formed, which is supposed to be one of the reasons for the high irreversible charge loss of these electrodes. The electronic character of such a surface layer formed at the electrode/electrolyte interface of LiNi0...
October 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29034527/age-of-onset-or-age-at-assessment-that-is-the-question-estimating-newly-incident-alcohol-drinking-and-rapid-transition-to-heavy-drinking-in-the-united-states-2002-2014
#17
Hui G Cheng, Catalina Lopez-Quintero, James C Anthony
Age-specific incidence estimates are important and useful facts in psychiatric epidemiology, but incidence estimation can be challenging. Methods artifacts are possible. In the United States, where the minimum legal drinking age is 21 years, recent cross-sectional field research on 12- to 25-year-olds applied conventional "age-at-assessment" approaches (AAA) for incidence estimation based on 12-month recall. Estimates disclosed unexpected nonlinear patterns in age-specific incidence estimates for both drinking onset and for transitioning from first drink to heavy drinking...
October 15, 2017: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/29034392/new-dimensions-in-salt-solvent-mixtures-a-4th-evolution-of-ionic-liquids
#18
Douglas R MacFarlane, Alison L Chong, Maria Forsyth, Mega Kar, R Vijayaraghavan, Anthony Somers, Jennifer M Pringle
In the field of ionic liquids (ILs) it has long been of fundamental interest to examine the transition from salt-in-solvent behaviour to pure liquid-salt behaviour, in terms of structures and properties. At the same time, a variety of applications have beneficially employed IL-solvent mixtures as media that offer an optimal set of properties. Their properties in many cases can be other than as expected on the basis of simple mixing concepts. Instead, they can reflect the distinct structural and interaction changes that occur as the mixture passes through the various stages from pure coulombic medium, to "plasticised" coulombic medium, into a meso-region where distinct molecular and ionic domains can co-exist...
October 16, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/29034364/microenvironmental-agonists-generate-de-novo-phenotypic-resistance-to-combined-ibrutinib-plus-venetoclax-in-cll-and-mcl
#19
Kallesh D Jayappa, Craig A Portell, Vicki L Gordon, Brian J Capaldo, Stefan Bekiranov, Mark J Axelrod, L Kyle Brett, Julia D Wulfkuhle, Rosa I Gallagher, Emanuel F Petricoin, Timothy P Bender, Michael E Williams, Michael J Weber
De novo resistance and rapid recurrence often characterize responses of B-cell malignancies to ibrutinib (IBR), indicating a need to develop drug combinations that block compensatory survival signaling and give deeper, more durable responses. To identify such combinations, we previously performed a combinatorial drug screen and identified the Bcl-2 inhibitor venetoclax (VEN) as a promising partner for combination with IBR in Mantle Cell Lymphoma (MCL). We have opened a multi-institutional clinical trial to test this combination...
June 13, 2017: Blood Advances
https://www.readbyqxmd.com/read/29033928/unexpectedly-high-prevalence-of-common-variable-immunodeficiency-in-finland
#20
Jannica S Selenius, Timi Martelius, Sampsa Pikkarainen, Sanna Siitonen, Eero Mattila, Risto Pietikäinen, Pekka Suomalainen, Arja H Aalto, Janna Saarela, Elisabet Einarsdottir, Asko Järvinen, Martti Färkkilä, Juha Kere, Mikko Seppänen
BACKGROUND: Common variable immunodeficiency (CVID) is the most common primary immunodeficiency. Prevalence varies greatly between countries and studies. Most diagnostic criteria include hypogammaglobulinemia and impaired vaccine response. AIM: To evaluate the minimum prevalence as well as the clinical and immunological phenotypes of CVID in Southern Finland. METHODS: We performed a cross-sectional study to assess all adult CVID patients followed up in three hospital districts in Southern and South-Eastern Finland between April 2007 and August 2015...
2017: Frontiers in Immunology
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