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https://www.readbyqxmd.com/read/28092850/tomato-slggp-like-gene-participates-in-plant-responses-to-chilling-stress-and-pathogenic-infection
#1
Dong-Yue Yang, Meng Li, Na-Na Ma, Xing-Hong Yang, Qing-Wei Meng
Plants are always exposed to abiotic and biotic stresses which can adversely affect their growth and development. As an important antioxidant, AsA plays a vital role in plant defence against damage caused by stresses. In this study, we cloned a tomato GDP-L-galactose phosphorylase-like (SlGGP-LIKE) gene and investigated its role in resistance to abiotic and biotic stresses by using antisense transgenic (AS) tomato lines. The AsA content in AS plants was lower than that in WT plants. Under chilling stress, the growth of AS plants was inhibited significantly, and they yielded higher levels of ROS, REC and MDA but demonstrated weaker APX activity than that shown by WT plants...
January 9, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28086974/ovarian-cancer-density-equalizing-mapping-of-the-global-research-architecture
#2
Dörthe Brüggmann, Katharina Pulch, Doris Klingelhöfer, Celeste Leigh Pearce, David A Groneberg
BACKGROUND: Despite its impact on female health worldwide, no efforts have been made to depict the global architecture of ovarian cancer research and to understand the trends in the related literature. Hence, it was the objective of this study to assess the global scientific performance chronologically, geographically and in regards to economic benchmarks using bibliometric tools and density equalizing map projections. METHODS: The NewQIS platform was employed to identify all ovarian cancer related articles published in the Web of Science since 1900...
January 13, 2017: International Journal of Health Geographics
https://www.readbyqxmd.com/read/28079138/spatiotemporal-pattern-of-pm2-5-concentrations-in-mainland-china-and-analysis-of-its-influencing-factors-using-geographically-weighted-regression
#3
Jieqiong Luo, Peijun Du, Alim Samat, Junshi Xia, Meiqin Che, Zhaohui Xue
Based on annual average PM2.5 gridded dataset, this study first analyzed the spatiotemporal pattern of PM2.5 across Mainland China during 1998-2012. Then facilitated with meteorological site data, land cover data, population and Gross Domestic Product (GDP) data, etc., the contributions of latent geographic factors, including socioeconomic factors (e.g., road, agriculture, population, industry) and natural geographical factors (e.g., topography, climate, vegetation) to PM2.5 were explored through Geographically Weighted Regression (GWR) model...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28076817/elucidation-of-single-hydrogen-bonds-in-gtpases-via-experimental-and-theoretical-infrared-spectroscopy
#4
Daniel Mann, Udo Höweler, Carsten Kötting, Klaus Gerwert
Time-resolved Fourier transform infrared (FTIR) spectroscopy is a powerful tool to elucidate label-free the reaction mechanisms of proteins. After assignment of the absorption bands to individual groups of the protein, the order of events during the reaction mechanism can be monitored and rate constants can be obtained. Additionally, structural information is encoded into infrared spectra and can be decoded by combining the experimental data with biomolecular simulations. We have determined recently the infrared vibrations of GTP and guanosine diphosphate (GDP) bound to Gαi1, a ubiquitous GTPase...
January 10, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28074430/the-monomeric-gtpase-raba2-is-required-for-progression-and-maintenance-of-membrane-integrity-of-infection-threads-during-root-nodule-symbiosis
#5
Virginia Dalla Via, Soledad Traubenik, Claudio Rivero, O Mario Aguilar, María Eugenia Zanetti, Flavio Antonio Blanco
Progression of the infection canal that conducts rhizobia to the nodule primordium requires a functional Rab GTPase located in Golgi/trans-Golgi that also participate in root hair polar growth. Common bean (Phaseolus vulgaris) symbiotically associates with its partner Rhizobium etli, resulting in the formation of root nitrogen-fixing nodules. Compatible bacteria can reach cortical cells in a tightly regulated infection process, in which the specific recognition of signal molecules is a key step to select the symbiotic partner...
January 10, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28073749/cost-effectiveness-of-a-government-supported-policy-strategy-to-decrease-sodium-intake-global-analysis-across-183-nations
#6
Michael Webb, Saman Fahimi, Gitanjali M Singh, Shahab Khatibzadeh, Renata Micha, John Powles, Dariush Mozaffarian
OBJECTIVE:  To quantify the cost effectiveness of a government policy combining targeted industry agreements and public education to reduce sodium intake in 183 countries worldwide. DESIGN:  Global modeling study. SETTING:  183 countries. POPULATION:  Full adult population in each country. INTERVENTION:  A "soft regulation" national policy that combines targeted industry agreements, government monitoring, and public education to reduce population sodium intake, modeled on the recent successful UK program...
January 10, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28072867/complex-economies-have-a-lateral-escape-from-the-poverty-trap
#7
Emanuele Pugliese, Guido L Chiarotti, Andrea Zaccaria, Luciano Pietronero
We analyze the decisive role played by the complexity of economic systems at the onset of the industrialization process of countries over the past 50 years. Our analysis of the input growth dynamics, considering a further dimension through a recently introduced measure of economic complexity, reveals that more differentiated and more complex economies face a lower barrier (in terms of GDP per capita) when starting the transition towards industrialization. As a consequence, we can extend the classical concept of a one-dimensional poverty trap, by introducing a two-dimensional poverty trap: a country will start the industrialization process if it is rich enough (as in neo-classical economic theories), complex enough (using this new dimension and laterally escaping from the poverty trap), or a linear combination of the two...
2017: PloS One
https://www.readbyqxmd.com/read/28069739/a-two-tiered-mechanism-enables-localized-cdc42-signaling-during-enterocyte-polarization
#8
Lucas J M Bruurs, Susan Zwakenberg, Mirjam C van der Net, Fried J Zwartkruis, Johannes L Bos
Signaling by the small GTPase Cdc42 governs a diverse set of cellular processes that contribute to tissue morphogenesis. Since these processes often require highly localized signaling, Cdc42 activity must be clustered in order to prevent ectopic signaling. During cell polarization, apical Cdc42 signaling directs the positioning of the nascent apical membrane. However, the molecular mechanisms that drive Cdc42 clustering during polarity establishment are largely unknown.Here we demonstrate that during cell polarization localized Cdc42 signaling is enabled via activity-dependent control of Cdc42 mobility...
January 9, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28069621/the-costs-of-diabetes-among-australians-aged-45-64%C3%A2-years-from-2015-to-2030-projections-of-lost-productive-life-years-plys-lost-personal-income-lost-taxation-revenue-extra-welfare-payments-and-lost-gross-domestic-product-from-health-wealthmod2030
#9
Deborah Schofield, Rupendra N Shrestha, Michelle M Cunich, Megan E Passey, Lennert Veerman, Robert Tanton, Simon J Kelly
OBJECTIVES: To project the number of people aged 45-64 years with lost productive life years (PLYs) due to diabetes and related costs (lost income, extra welfare payments, lost taxation revenue); and lost gross domestic product (GDP) attributable to diabetes in Australia from 2015 to 2030. DESIGN: A simulation study of how the number of people aged 45-64 years with diabetes increases over time (based on population growth and disease trend data) and the economic losses incurred by individuals and the government...
January 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28062963/does-demand-for-breast-augmentation-reflect-national-financial-trends
#10
L Kearney, R T Dolan, A J Clover, E J Kelly, E O'Broin, M O'Shaughnessy, S T O'Sullivan
: Aesthetic plastic surgery is a consumer-driven industry, subject to influence by financial forces. A changing economic environment may thus impact on the demand for surgery. The aim of this study was to explore trends in demand for bilateral breast augmentation (BBA) in consecutively presenting patients over an 11-year period and to examine if a correlation exists between these trends and changes in Gross Domestic Product (GDP), a key economic indicator. This study revealed a correlation between annual number of breast augmentation procedures performed and GDP values (r (2) = 0...
January 7, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28062526/regulation-of-chemokine-signal-integration-by-activator-of-g-protein-signaling-4-ags4
#11
William G Robichaux, Melissa Branham-O'Connor, Il-Young Hwang, Ali Vural, John H Kehrl, Joe B Blumer
Activator of G-protein signaling 4 (AGS4)/G-protein signaling modulator 3 (Gpsm3) contains three G-protein regulatory (GPR) motifs, each of which can bind Gαi-GDP free of Gβγ. We previously demonstrated that the AGS4-Gαi interaction is regulated by seven transmembrane-spanning receptors (7-TMR), which may reflect direct coupling of the GPR-Gαi module to the receptor analogous to canonical Gαβγ heterotrimer. Here, we demonstrate that the AGS4-Gαi complex is regulated by chemokine receptors in an agonist-dependent manner that is receptor-proximal...
January 6, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28062102/exploring-the-impact-of-determining-factors-behind-co2-emissions-in-china-a-cge-appraisal
#12
Bowen Xiao, Dongxiao Niu, Han Wu
Along with the arrival of the post-Kyoto Protocol era, the Chinese government faces ever greater pressure to reduce greenhouse gases (GHGs). Hence, this paper aims to discuss the drivers of carbon dioxide (CO2) emissions and their impact on society as a whole. First, we analyzed the background and overall situations of CO2 emissions in China. Then, we reviewed previous studies to explore the determinants behind China's CO2 emissions. It is widely acknowledged that energy efficiency, energy mix, and economy structure are three key factors contributing to CO2 emissions...
January 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28057583/the-molecular-features-of-uncoupling-protein-1-support-a-conventional-mitochondrial-carrier-like-mechanism
#13
REVIEW
Paul G Crichton, Yang Lee, Edmund R S Kunji
Uncoupling protein 1 (UCP1) is an integral membrane protein found in the mitochondrial inner membrane of brown adipose tissue, and facilitates the process of non-shivering thermogenesis in mammals. Its activation by fatty acids, which overcomes its inhibition by purine nucleotides, leads to an increase in the proton conductance of the inner mitochondrial membrane, short-circuiting the mitochondrion to produce heat rather than ATP. Despite 40 years of intense research, the underlying molecular mechanism of UCP1 is still under debate...
January 2, 2017: Biochimie
https://www.readbyqxmd.com/read/28057534/altered-fronto-striatal-functions-in-the-gdi1-null-mouse-model-of-x-linked-intellectual-disability
#14
Lorenzo Morè, Basil Künnecke, Latefa Yekhlef, Andreas Bruns, Antonella Marte, Ernesto Fedele, Veronica Bianchi, Stefano Taverna, Silvia Gatti, Patrizia D'Adamo
RAB-GDP dissociation inhibitor 1 (GDI1) loss-of-function mutations are responsible for a form of non-specific X-linked Intellectual Disability (XLID) where the only clinical feature is cognitive impairment. GDI1 patients are impaired in specific aspects of executive functions and conditioned response, which are controlled by fronto-striatal circuitries. Previous molecular and behavioral characterization of the Gdi1-null mouse revealed alterations in the total number/distribution of hippocampal and cortical synaptic vesicles as well as hippocampal short-term synaptic plasticity, and memory deficits...
January 3, 2017: Neuroscience
https://www.readbyqxmd.com/read/28055292/molecular-control-of-rab-activity-by-gefs-gaps-and-gdi
#15
Matthias P Müller, Roger S Goody
Rab proteins are the major regulators of vesicular trafficking in eukaryotic cells. Their activity can be tightly controlled within cells: Regulated by guanine nucleotide exchange factors (GEFs) and GTPase activating proteins (GAPs), they switch between an active GTP-bound state and an inactive GDP-bound state, interacting with downstream effector proteins only in the active state. Additionally, they can bind to membranes via C-terminal prenylated cysteine residues and they can be solubilized and shuttled between membranes by chaperone-like molecules called GDP dissociation inhibitors (GDIs)...
January 5, 2017: Small GTPases
https://www.readbyqxmd.com/read/28054602/identification-of-guanosine-5-diphosphate-as-potential-iron-mobilizer-preventing-the-hepcidin-ferroportin-interaction-and-modulating-the-interleukin-6-stat-3-pathway
#16
Stanzin Angmo, Neha Tripathi, Sheenu Abbat, Shailesh Sharma, Shelley Sardul Singh, Avishek Halder, Kamalendra Yadav, Geeta Shukla, Rajat Sandhir, Vikas Rishi, Prasad V Bharatam, Hariom Yadav, Nitin Kumar Singhal
Hepcidin, a peptide hormone, is a key regulator in mammalian iron homeostasis. Increased level of hepcidin due to inflammatory conditions stimulates the ferroportin (FPN) transporter internalization, impairing the iron absorption; clinically manifested as anemia of inflammation (AI). Inhibiting hepcidin-mediated FPN degradation is proposed as an important strategy to combat AI. A systematic approach involving in silico, in vitro, ex vivo and in vivo studies is employed to identify hepcidin-binding agents. The virtual screening of 68,752 natural compounds via molecular docking resulted into identification of guanosine 5'-diphosphate (GDP) as a promising hepcidin-binding agent...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28053102/5-phospho-rna-acceptor-specificity-of-gdp-polyribonucleotidyltransferase-of-vesicular-stomatitis-virus-in-mrna-capping
#17
Minako Ogino, Tomoaki Ogino
: The GDP polyribonucleotidyltransferase (PRNTase) domain of the multifunctional L protein of rhabdoviruses, such as vesicular stomatitis virus (VSV) and rabies virus, catalyzes the transfer of 5' -phospho-RNA (pRNA) from 5' -triphospho-RNA (pppRNA) to GDP via a covalent enzyme-pRNA intermediate to generate a 5' -cap structure (GpppA). Here, using an improved oligo-RNA capping assay with the VSV L protein, we showed that the Michaelis constants for GDP and pppAACAG (VSV mRNA-start sequence) are 0...
January 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28051150/prostate-cancer-mortality-to-incidence-ratios-are-associated-with-cancer-care-disparities-in-35-countries
#18
Sung-Lang Chen, Shao-Chuan Wang, Cheng-Ju Ho, Yu-Lin Kao, Tzuo-Yi Hsieh, Wen-Jung Chen, Chih-Jung Chen, Pei-Ru Wu, Jiunn-Liang Ko, Huei Lee, Wen-Wei Sung
The variation in mortality-to-incidence ratios (MIRs) among countries reflects the clinical outcomes and the available interventions for colorectal cancer treatments. The association between MIR of prostate cancer and cancer care disparities among countries is an interesting issue that is rarely investigated. For the present study, cancer incidence and mortality rates were obtained from the GLOBOCAN 2012 database. The rankings and total expenditures on health of various countries were obtained from the World Health Organization (WHO)...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28043097/costs-of-diarrhoea-and-acute-respiratory-infection-attributable-to-not-handwashing-the-cases-of-india-and-china
#19
Joy Townsend, Katie Greenland, Val Curtis
OBJECTIVE: To estimate the national costs relating to diarrhoea and acute respiratory infections from not handwashing with soap after contact with excreta and the costs and benefits of handwashing behaviour change programmes in India and China. METHODS: Data on the reduction in risk of diarrhoea and acute respiratory infection attributable to handwashing with soap were used, together with World Health Organization (WHO) estimates of disability-adjusted life years (DALYs) due to diarrhoea and acute respiratory infection, to estimate DALYs due to not handwashing in India and China...
January 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28039053/novel-dock2-selective-inhibitory-peptide-that-suppresses-b-cell-line-migration
#20
Kotaro Sakamoto, Yusuke Adachi, Yusaku Komoike, Yusuke Kamada, Ryokichi Koyama, Yasunori Fukuda, Akito Kadotani, Taiji Asami, Jun-Ichi Sakamoto
Dedicator of cytokinesis 2 (DOCK2) is a key molecule for lymphocyte activation and migration. DOCK2 interacts with Ras-related C3 botulinus toxin substrate 1 (Rac1, GTPase) and mediates the GDP-GTP exchange reaction, indicating that inhibitors against protein-protein interaction (PPI) between DOCK2 and Rac1 would be good drug candidates for treating immune-related disorders. Here, we report DOCK2-selective PPI inhibitory peptides discovered using random peptide T7 phage display technology. These peptides inhibited DOCK2 activity at nanomolar concentrations and were delivered to intracellular compartments by combination with cell-penetrating peptide (CPP)...
December 27, 2016: Biochemical and Biophysical Research Communications
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