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https://www.readbyqxmd.com/read/28109126/a-step-wise-approach-to-define-binding-mechanisms-of-surrogate-viral-particles-to-multi-modal-anion-exchange-resin-in-a-single-solute-system
#1
Matthew Brown, Sarah Johnson, Kurt Brorson, Scott Lute, David Roush
Multi-modal anion exchange resins combine properties of both anion exchange and hydrophobic interaction chromatography for commercial protein polishing and may provide some viral clearance as well. From a regulatory viral clearance claim standpoint, it is unclear if multi-modal resins are truly orthogonal to either single-mode anion exchange or hydrophobic interaction columns. To answer this, a strategy of solute surface assays and High Throughput Screening of resin in concert with a scale-down model of large scale chromatography purification was employed to determine the predominant binding mechanisms of a panel of bacteriophage (i...
January 21, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28108926/prospective-associations-between-peer-victimization-and-dispositional-mindfulness-in-early-adolescence
#2
Nathaniel R Riggs, Samantha M Brown
Peer victimization is associated with several mental health and behavioral problems during childhood and adolescence. Identifying prospective associations between victimization and factors known to protect against these problems may ultimately contribute to more precise developmental models for victimization's role in behavioral and mental health. This study tested prospective associations between peer victimization and dispositional mindfulness, defined by non-judgmental and accepting awareness of the constant stream of lived experience, during early adolescence...
January 20, 2017: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/28108609/visualization-and-quantification-of-browning-using-a-ucp1-2a-luciferase-knock-in-mouse-model
#3
Liufeng Mao, Baoming Nie, Tao Nie, Xiaoyan Hui, Xuefei Gao, Xiaoliang Lin, Xin Liu, Yong Xu, Xiaofeng Tang, Ran Yuan, Kuai Li, Peng Li, Ke Ding, Yu Wang, Aimin Xu, Jian Fei, Weiping Han, Pentao Liu, Lise Madsen, Karsten Kristiansen, Zhiguang Zhou, Sheng Ding, Donghai Wu
Both mammals and adult humans possess classic brown adipocytes and beige adipocytes, and the amount and activity of these adipocytes are considered key factors in combating obesity and its associated metabolic diseases. Uncoupling protein 1 (Ucp1) is the functional marker of both brown and beige adipocytes. To facilitate a reliable, easy, and sensitive measurement of Ucp1 expression both in vivo and in vitro, we generated a Ucp1-2A-luciferase knock-in mouse by deleting the stop codon for the mouse Ucp1 gene and replacing it with a 2A peptide...
February 2017: Diabetes
https://www.readbyqxmd.com/read/28108517/sdhd-promoter-mutations-ablate-gabp-transcription-factor-binding-in-melanoma
#4
Tongwu Zhang, Mai Xu, Matthew M Makowski, Christine Lee, Michael Kovacs, Jun Fang, Esther Willems, Jeffrey M Trent, Nicholas K Hayward, Michiel Vermeulen, Kevin M Brown
SDHD encodes subunit D of the succinate dehydrogenase complex, an integral membrane protein. Across cancer types, recurrent SDHD promoter mutations were reported to occur exclusively in melanomas, at a frequency of 4-5%. These mutations are predicted to disrupt consensus ETS-transcription factor binding sites and are correlated with both reduced SDHD gene expression and poor prognosis. However, the consequence of these mutations on SDHD expression in melanoma is still unclear. Here, we found that expression of SDHD in melanoma correlated with the expression of multiple ETS-transcription factors, particularly in SDHD promoter wild-type samples...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108416/symptoms-and-the-body-taking-the-inferential-leap
#5
REVIEW
Omer Van den Bergh, Michael Witthöft, Sibylle Petersen, Richard J Brown
The relationship between the conscious experience of physical symptoms and indicators of objective physiological dysfunction is highly variable and depends on characteristics of the person, the context and their interaction. This relationship often breaks down entirely in the case of "medically unexplained" or functional somatic symptoms, violating the basic assumption in medicine that physical symptoms have physiological causes. In this paper, we describe the prevailing theoretical approach to this problem and review the evidence pertaining to it...
January 17, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28108405/defects-of-the-vertebral-endplate-implications-for-disc-degeneration-depend-on-size
#6
Uruj Zehra, Luke Flower, Katharine Robson-Brown, Michael A Adams, Patricia Dolan
BACKGROUND CONTEXT: Bony vertebral endplates must be porous to allow metabolite transport into the disc, and yet strong to resist high intradiscal pressure. Endplate defects may therefore have nutritional and mechanical consequences for the disc, depending on their size and type. We hypothesise that broad, diffuse defects are more closely associated with disc decompression and degeneration than are focal Schmorl's node-type defects. PURPOSE: To determine how the size and type of endplate defects are related to decompression and degeneration in the adjacent intervertebral disc...
January 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28108400/overexpression-of-a-three-gene-conidial-pigment-biosynthetic-pathway-in-aspergillus-nidulans-reveals-the-first-nrps-known-to-acetylate-tryptophan
#7
Calvin T Sung, Shu-Lin Chang, Ruth Entwistle, Green Ahn, Tzu-Shyang Lin, Vessela Petrova, Hsu-Hua Yeh, Mike B Praseuth, Yi-Ming Chiang, Berl R Oakley, Clay C C Wang
Fungal nonribosomal peptide synthetases (NRPSs) are megasynthetases that produce cyclic and acyclic peptides. In Aspergillus nidulans, the NRPS ivoA (AN10576) has been associated with the biosynthesis of grey-brown conidiophore pigments. Another gene, ivoB (AN0231), has been demonstrated to be an N-acetyl-6-hydroxytryptophan oxidase that putatively acts downstream of IvoA. A third gene, ivoC, has also been predicted to be involved in pigment biosynthesis based on publicly available genomic and transcriptomic information...
January 17, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28107812/tissue-resolved-gene-structure-refined-equine-transcriptome
#8
T A Mansour, E Y Scott, C J Finno, R R Bellone, M J Mienaltowski, M C Penedo, P J Ross, S J Valberg, J D Murray, C T Brown
BACKGROUND: Transcriptome interpretation relies on a good-quality reference transcriptome for accurate quantification of gene expression as well as functional analysis of genetic variants. The current annotation of the horse genome lacks the specificity and sensitivity necessary to assess gene expression especially at the isoform level, and suffers from insufficient annotation of untranslated regions (UTR) usage. We built an annotation pipeline for horse and used it to integrate 1.9 billion reads from multiple RNA-seq data sets into a new refined transcriptome...
January 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28107769/the-transcriptional-modulator-ifrd1-controls-pgc-1%C3%AE-expression-under-short-term-adrenergic-stimulation-in-brown-adipocytes
#9
Gyujin Park, Tetsuhiro Horie, Takashi Kanayama, Kazuya Fukasawa, Takashi Iezaki, Yuki Onishi, Kakeru Ozaki, Yukari Nakamura, Yukio Yoneda, Takeshi Takarada, Eiichi Hinoi
Sympathetic tone activates the function of classical brown adipocytes, which constitutively exist in the brown adipose tissue, and inducible brown adipocytes (so-called beige adipocytes), which sporadically reside within the white adipose tissue. Here we identified the transcriptional modulator interferon-related developmental regulator 1 (Ifrd1) as a negative regulator of thermogenic and mitochondrial gene expression in brown adipocytes. Ifrd1 expression was markedly induced by cold exposure and administration of CL-316243 (a β3 adrenergic agonist) in interscapular brown adipose and inguinal subcutaneous white adipose tissues, but not in epididymal visceral white adipose tissue, in vivo...
January 20, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28107654/examining-the-link-between-nonmedical-use-of-sedatives-tranquilizers-and-pain-relievers-with-dispositions-toward-impulsivity-among-college-students
#10
Brittany E Blanchard, Angela K Stevens, Andrew K Littlefield, Amelia E Talley, Jennifer L Brown
BACKGROUND: The association between impulsive dispositions and the use of the central nervous system (CNS) depressant alcohol has been examined extensively; however, the links between other depressant use (sedatives, tranquilizers, and pain relievers) and impulsivity have been less studied, and findings have been equivocal. This may be due, in part, to varying operationalizations of "impulsivity," as well as issues related to the lumping versus splitting of various depressant substances when assessing use...
January 6, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28107636/visceral-white-adipose-tissue-following-chronic-intermittent-and-sustained-hypoxia-in-mice
#11
David Gozal, Alex Gileles-Hillel, Rene Cortese, Yan Li, Isaac Almendros, Zhuanhong Qiao, Ahamed A Khalyfa, Jorge Andrade, Abdelnaby Khalyfa
BACKGROUND: Angiogenesis, a process induced by hypoxia in visceral white adipose tissue (vWAT) in the context of obesity, mediates obesity-induced metabolic dysfunction and insulin resistance. Chronic intermittent hypoxia (IH) and sustained hypoxia (SH) induce body weight reductions and insulin resistance of differing magnitude, suggesting different HIF-1α-related activity. METHODS: 8-week old male C57BL/6J mice (n=10-12/group) were exposed to either IH, SH,or room air (RA)...
January 20, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28107612/hemin-binding-by-porphyromonas-gingivalis-strains-is-dependent-on-the-presence-of-a-lps
#12
Minnie Rangarajan, Joseph Aduse-Opoku, Nikolay A Paramonov, Ahmed Hashim, Michael A Curtis
Porphyromonas gingivalis is a Gram-negative black pigmenting anaerobe unable to synthesise haem (Fe (II)-protoporphyrin IX) or hemin (Fe(III)-protoporphyrin IX-Cl) which are important growth/virulence-factors, and must therefore derive them from the host P. gingivalis expresses several proteinaceous hemin -binding-sites which are important in the binding/ transport of haem/hemin from the host. P. gingivalis also synthesises several virulence factors, namely cysteine-proteases Arg- and Lys-gingipains and two lipopolysaccharides (LPS), O-LPS and A-LPS...
January 20, 2017: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/28107419/a-new-israeli-tobamovirus-isolate-infects-tomato-plants-harboring-tm-22-resistance-genes
#13
Neta Luria, Elisheva Smith, Victoria Reingold, Ilana Bekelman, Moshe Lapidot, Ilan Levin, Nadav Elad, Yehudit Tam, Noa Sela, Ahmad Abu-Ras, Nadav Ezra, Ami Haberman, Liron Yitzhak, Oded Lachman, Aviv Dombrovsky
An outbreak of a new disease infecting tomatoes occurred in October-November 2014 at the Ohad village in Southern Israel. Symptomatic plants showed a mosaic pattern on leaves accompanied occasionally by narrowing of leaves and yellow spotted fruit. The disease spread mechanically and rapidly reminiscent of tobamovirus infection. Epidemiological studies showed the spread of the disease in various growing areas, in the South and towards the Southeast and Northern parts of the country within a year. Transmission electron microscope (TEM) analysis showed a single rod-like form characteristic to the Tobamovirus genus...
2017: PloS One
https://www.readbyqxmd.com/read/28107287/case-volume-and-revisits-in-children-undergoing-gastrostomy-tube-placement
#14
Marjorie J Arca, Shawn J Rangel, Matt Hall, David H Rothstein, Martin L Blakely, Peter C Minneci, Samir S Shah, Kurt F Heiss, Charles L Snyder, Loren Berman, Marybeth Browne, Charles D Vinocur, Mehul V Raval, Adam B Goldin
OBJECTIVE: Emergency department (ED) visits and hospital readmissions are common following gastrostomy tube (GT) placement in children. We sought to characterize inter-hospital variation in revisit rates and explore the association between this outcome and hospital-specific GT case volume. STUDY DESIGN: We conducted a retrospective cohort study from 38 hospitals using the Pediatric Health Information System (PHIS) database. Patients <18 years who had a GT placed in 2010-2012 were assessed for a GT-related (mechanical or infectious) ED visit or inpatient readmission at 30 and 90 days following discharge from GT placement...
January 20, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28107179/nuclear-prmt5-cyclin-d1-and-il-6-are-associated-with-poor-outcome-in-oropharyngeal-squamous-cell-carcinoma-patients-and-is-inversely-associated-with-p16-status
#15
Bhavna Kumar, Arti Yadav, Nicole V Brown, Songzhu Zhao, Michael J Cipolla, Paul E Wakely, Alessandra C Schmitt, Robert A Baiocchi, Theodoros N Teknos, Matthew Old, Pawan Kumar
Protein arginine methyltransferase-5 (PRMT5) plays an important role in cancer progression by repressing the expression of key tumor suppressor genes via the methylation of transcriptional factors and chromatin-associated proteins. However, very little is known about the expression and biological role of PRMT5 in head and neck cancer. In this study, we examined expression profile of PRMT5 at subcellular levels in oropharyngeal squamous cell carcinoma (OPSCC) and assessed its correlation with disease progression and patient outcome...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28106758/validation-of-a-smartphone-image-based-dietary-assessment-method-for-pregnant-women
#16
Amy M Ashman, Clare E Collins, Leanne J Brown, Kym M Rae, Megan E Rollo
Image-based dietary records could lower participant burden associated with traditional prospective methods of dietary assessment. They have been used in children, adolescents and adults, but have not been evaluated in pregnant women. The current study evaluated relative validity of the DietBytes image-based dietary assessment method for assessing energy and nutrient intakes. Pregnant women collected image-based dietary records (via a smartphone application) of all food, drinks and supplements consumed over three non-consecutive days...
January 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28106757/new-enzyme-inhibitory-triterpenoid-from-marine-macro-brown-alga-padina-boergesenii-allender-kraft
#17
Liaqat Ali, Abdul Latif Khan, Muhammad Al-Broumi, Rashid Al-Harrasi, Lubna Al-Kharusi, Javid Hussain, Ahmed Al-Harrasi
In continuation to our study of the chemical and biological potential of the secondary metabolites isolated from Omani seaweeds, we investigated a marine brown alga, Padina boergesenii. The phytochemical investigation resulted in the isolation of a new secondary metabolite, padinolic acid (1), along with some other semi-pure fractions and sub-fractions. The planar structure was confirmed through MS and NMR (1D and 2D) spectral data. The NOESY experiments coupled with the biogenetic consideration were helpful in assigning the stereochemistry in the molecule...
January 18, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28106417/chaos-and-regularity-in-the-doubly-magic-nucleus-208-pb
#18
B Dietz, A Heusler, K H Maier, A Richter, B A Brown
High-resolution experiments have recently lead to a complete identification (energy, spin, and parity) of 151 nuclear levels up to an excitation energy of E_{x}=6.20  MeV in ^{208}Pb [Heusler et al., Phys. Rev. C 93, 054321 (2016)PRVCAN2469-998510.1103/PhysRevC.93.054321]. We present a thorough study of the fluctuation properties in the energy spectra of the unprecedented set of nuclear bound states. In a first approach, we group states with the same spin and parity into 14 subspectra, analyze standard statistical measures for short- and long-range correlations, i...
January 6, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28106279/a-rapid-electrochemical-monitoring-platform-for-sensitive-determination-of-thiamethoxam-based-on-%C3%AE-cyclodextrin-graphene-composite
#19
XingChen Zhai, Hua Zhang, Min Zhang, Xin Yang, Cheng Gu, GuoPeng Zhou, Haitian Zhao, Zhenyu Wang, Aijun Dong, Jing Wang
A rapid monitoring platform for sensitive voltammetric detection of thiamethoxam (TMX) residues was reported in the present study. The β-cyclodextrin-reduced graphene oxide composite (β-CD-rGO) was used as a reinforcing material in electrochemical determination of TMX. Compared with bare glassy carbon electrode (GCE), the reduction peak currents of TMX at rGO/GCE and β-CD-rGO/GCE were increased by 70 and 124 folds, respectively. The experimental conditions influencing voltammetric determination of TMX, such as the amount of β-CD-rGO, solution pH, temperature and time on accumulation, were optimized...
January 20, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28106081/shigatoxin-encoding-bacteriophage-%C3%AF-24b-modulates-bacterial-metabolism-to-raise-antimicrobial-tolerance
#20
G S Holt, J K Lodge, A J McCarthy, A K Graham, G Young, S H Bridge, A K Brown, M Veses-Garcia, C V Lanyon, A Sails, H E Allison, D L Smith
How temperate bacteriophages play a role in microbial infection and disease progression is not fully understood. They do this in part by carrying genes that promote positive evolutionary selection for the lysogen. Using Biolog phenotype microarrays and comparative metabolite profiling we demonstrate the impact of the well-characterised Shiga toxin-prophage ϕ24B on its Escherichia coli host MC1061. As a lysogen, the prophage alters the bacterial physiology by increasing the rates of respiration and cell proliferation...
January 20, 2017: Scientific Reports
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