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https://www.readbyqxmd.com/read/27936220/effects-of-ion-irradiation-on-seedlings-growth-monitored-by-ultraweak-delayed-luminescence
#1
Rosaria Grasso, Tomoko Abe, Giuseppe A P Cirrone, Giacomo Cuttone, Marisa Gulino, Francesco Musumeci, Francesco Romano, Hiromichi Ryuto, Agata Scordino
The optical technique based on the measurement of delayed luminescence emitted from the biological samples has demonstrated its ability to provide valid and predictive information on the functional status of various biological systems. We want to extend this technique to study the effect of ionizing radiation on biological systems. In particular we are interested in the action of ion beams, used for therapeutic purposes or to increase the biological diversity. In general, the assessment of the damage that radiation produces both in the target objects and in the surrounding tissues, requires considerable time because is based on biochemical analysis or on the examination of the evolution of the irradiated systems...
2016: PloS One
https://www.readbyqxmd.com/read/27936190/two-isoforms-of-yersinia-pestis-plasminogen-activator-pla-intraspecies-distribution-intrinsic-disorder-propensity-and-contribution-to-virulence
#2
Svetlana V Dentovskaya, Mikhail E Platonov, Tat'yana E Svetoch, Pavel Kh Kopylov, Tat'yana I Kombarova, Sergey A Ivanov, Rima Z Shaikhutdinova, Lyubov' V Kolombet, Sadhana Chauhan, Vitaly G Ablamunits, Vladimir L Motin, Vladimir N Uversky, Andrey P Anisimov
It has been shown previously that several endemic Y. pestis isolates with limited virulence contained the I259 isoform of the outer membrane protease Pla, while the epidemic highly virulent strains possessed only the T259 Pla isoform. Our sequence analysis of the pla gene from 118 Y. pestis subsp. microtus strains revealed that the I259 isoform was present exclusively in the endemic strains providing a convictive evidence of more ancestral origin of this isoform. Analysis of the effects of the I259T polymorphism on the intrinsic disorder propensity of Pla revealed that the I259T mutation slightly increases the intrinsic disorder propensity of the C-terminal tail of Pla and makes this protein slightly more prone for disorder-based protein-protein interactions, suggesting that the T259 Pla could be functionally more active than the I259 Pla...
2016: PloS One
https://www.readbyqxmd.com/read/27936168/transcriptome-analysis-of-ceriops-tagal-in-saline-environments-using-rna-sequencing
#3
Xiaorong Xiao, Yuhui Hong, Wei Xia, Shipeng Feng, Xi Zhou, Xiumei Fu, Jian Zang, Yong Xiao, Xiaolei Niu, Chunxia Li, Yinhua Chen
Identification of genes involved in mangrove species' adaptation to salt stress can provide valuable information for developing salt-tolerant crops and understanding the molecular evolution of salt tolerance in halophiles. Ceriops tagal is a salt-tolerant mangrove tree growing in mudflats and marshes in tropical and subtropical areas, without any prior genome information. In this study, we assessed the biochemical and transcriptional responses of C. tagal to high salt treatment (500 mmol/L NaCl) by hydroponic experiments and RNA-seq...
2016: PloS One
https://www.readbyqxmd.com/read/27936135/identifying-major-transitions-in-the-evolution-of-lithic-cutting-edge-production-rates
#4
Antoine Muller, Chris Clarkson
The notion that the evolution of core reduction strategies involved increasing efficiency in cutting edge production is prevalent in narratives of hominin technological evolution. Yet a number of studies comparing two different knapping technologies have found no significant differences in edge production. Using digital analysis methods we present an investigation of raw material efficiency in eight core technologies broadly representative of the long-term evolution of lithic technology. These are bipolar, multiplatform, discoidal, biface, Levallois, prismatic blade, punch blade and pressure blade production...
2016: PloS One
https://www.readbyqxmd.com/read/27936063/hydrophobins-in-the-life-cycle-of-the-ectomycorrhizal-basidiomycete-tricholoma-vaccinum
#5
Dominik Sammer, Katrin Krause, Matthias Gube, Katharina Wagner, Erika Kothe
Hydrophobins-secreted small cysteine-rich, amphipathic proteins-foster interactions of fungal hyphae with hydrophobic surfaces, and are involved in the formation of aerial hyphae. Phylogenetic analyses of Tricholoma vaccinum hydrophobins showed a grouping with hydrophobins of other ectomycorrhizal fungi, which might be a result of co-evolution. Further analyses indicate angiosperms as likely host trees for the last common ancestor of the genus Tricholoma. The nine hydrophobin genes in the T. vaccinum genome were investigated to infer their individual roles in different stages of the life cycle, host interaction, asexual and sexual development, and with respect to different stresses...
2016: PloS One
https://www.readbyqxmd.com/read/27935978/genome-wide-identification-phylogeny-and-expression-of-aquaporin-genes-in-common-carp-cyprinus-carpio
#6
Chuanju Dong, Lin Chen, Jingyan Feng, Jian Xu, Shahid Mahboob, Khalid Al-Ghanim, Xuejun Li, Peng Xu
BACKGROUND: Aquaporins (Aqps) are integral membrane proteins that facilitate the transport of water and small solutes across cell membranes. Among vertebrate species, Aqps are highly conserved in both gene structure and amino acid sequence. These proteins are vital for maintaining water homeostasis in living organisms, especially for aquatic animals such as teleost fish. Studies on teleost Aqps are mainly limited to several model species with diploid genomes. Common carp, which has a tetraploidized genome, is one of the most common aquaculture species being adapted to a wide range of aquatic environments...
2016: PloS One
https://www.readbyqxmd.com/read/27935948/alternative-splicing-within-and-between-drosophila-species-sexes-tissues-and-developmental-stages
#7
Lauren Gibilisco, Qi Zhou, Shivani Mahajan, Doris Bachtrog
Alternative pre-mRNA splicing ("AS") greatly expands proteome diversity, but little is known about the evolutionary landscape of AS in Drosophila and how it differs between embryonic and adult stages or males and females. Here we study the transcriptomes from several tissues and developmental stages in males and females from four species across the Drosophila genus. We find that 20-37% of multi-exon genes are alternatively spliced. While males generally express a larger number of genes, AS is more prevalent in females, suggesting that the sexes adopt different expression strategies for their specialized function...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27935719/natural-gas-evolution-in-a-gas-hydrate-melt-effect-of-thermodynamic-hydrate-inhibitors
#8
Sujith Kakkattu S, Chelat Narayana Panicker Ramachandran
Natural gas extraction from gas hydrate sediments by injection of hydrate inhibitors involves the decomposition of hydrates. The evolution of dissolved gas from the hydrate melt is an important step in the extraction process. Using classical molecular dynamics simulations, we study the evolution of dissolved methane from its hydrate melt in presence of two thermodynamic hydrate inhibitors, NaCl and CH3OH. An increase in the concentration of hydrate inhibitors is found to promote the nucleation of methane nanobubbles in the hydrate melt...
December 9, 2016: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/27935553/percutaneous-irreversible-electroporation-ire-of-prostate-cancer-contrast-enhanced-ultrasound-ceus-findings-during-follow%C3%A2-up
#9
L P Beyer, B Pregler, C Nießen, K Michalik, M Haimerl, C Stroszczynski, E M Jung, P Wiggermann
PURPOSE: Irreversible electroporation (IRE) is a focal non-thermal ablation technique that can be used to treat prostate cancer (Pca). The objective was to document the evolution of the volume of the prostate gland and the ablation zone after IRE of Pca. MATERIAL AND METHODS: A retrospective analysis of the image findings of CEUS 1 day, 6 weeks, 3 months and 6 months after IRE of 25 patients was conducted. The prostate gland volumes and the size of the ablation zones were documented...
December 8, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27935048/height-related-scaling-of-phloem-anatomy-and-the-evolution-of-sieve-element-end-wall-types-in-woody-plants
#10
Johannes Liesche, Marcelo R Pace, Qiyu Xu, Yongqing Li, Shaolin Chen
In the sieve elements (SEs) of the phloem, carbohydrates are transported throughout the whole plant from their site of production to sites of consumption or storage. SE structure, especially of the pore-rich end walls, has a direct effect on translocation efficiency. Differences in pore size and other features were interpreted as an evolutionary trend towards reduced hydraulic resistance. However, this has never been confirmed. Anatomical data of 447 species of woody angiosperms and gymnosperms were used for a phylogenetic analysis of end wall types, calculation of hydraulic resistance and correlation analysis with morphological and physiological variables...
December 9, 2016: New Phytologist
https://www.readbyqxmd.com/read/27934877/overexpression-and-gene-amplification-of-pd-l1-in-cancer-cells-and-pd-l1-immune-cells-in-epstein-barr-virus-associated-gastric-cancer-the-prognostic-implications
#11
Ruri Saito, Hiroyuki Abe, Akiko Kunita, Hiroharu Yamashita, Yasuyuki Seto, Masashi Fukayama
Cancer cells use PD-L1 to evade antitumor immunity through interaction with programmed cell death protein 1 (PD-1) on T cells. Recent whole-genome sequence studies revealed frequent gene amplification of PD-L1 in Epstein-Barr virus-associated gastric cancer (EBVaGC). To investigate the significance of PD-L1 in cancer cells and their microenvironment in EBVaGC, we studied PD-L1 expression by analysis of the public database and immunohistochemistry with fluorescent in situ hybridization (FISH) of the PD-L1 gene...
December 9, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27934824/genomic-profile-of-antibiotic-resistant-classical-ctxb-positive-vibrio-cholerae-o1-biotype-el-tor-isolated-in-2003-and-2005-from-puri-india-a-retrospective-study
#12
T Bhotra, M M Das, B B Pal, D V Singh
OBJECTIVES: To examine eight strains of Vibrio cholerae O1 isolated in 2003 and 2005 from Puri, India, for antibiotic susceptibility, presence of virulence and regulatory genes, cholera toxin (CT) production, CTX arrangement and genomic profiles. MATERIALS AND METHODS: Bacterial strains were tested for antibiotic susceptibility using disc diffusion assay. Polymerase chain reaction determined the presence of antibiotic resistance, virulence and regulatory genes. To determine the type of cholera toxin subunit B (ctxB), nucleotide sequencing was performed...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27934541/association-between-endothelial-dysfunction-and-otoneurological-symptoms-in-children-with-sickle-cell-disease
#13
Mara Renata Rissatto-Lago, Cristina Salles, Fernando Gesteira Campos de Pinho, Isa Menezes Lyra, Regina Terse-Ramos, Rozana Teixeira, Ana Marice Ladeia
OBJECTIVE: To evaluate the association between endothelial dysfunction and otoneurological symptoms and vaso-occlusive phenomena in children with sickle cell disease (SCD). METHODS: Cross-sectional study with 54 children, aged between 6 and19 years of age, of whom 28 had genotype SS and 26 apparently healthy (AA genotype) whose parents or guardians, or the children themselves, filled out a questionnaire designed to assess their otoneurological symptoms. All the individuals were submitted assessment of endothelial function by flow-mediated dilation (FMD) percentage with reactive hyperemia of brachial artery Doppler...
December 9, 2016: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/27934303/solvent-dependent-thermochemistry-of-an-iridium-ruthenium-h2-evolution-catalyst
#14
Kelsey R Brereton, Catherine L Pitman, Thomas R Cundari, Alexander J M Miller
The hydricity of the heterobimetallic iridium/ruthenium catalyst [Cp*Ir(H)(μ-bpm)Ru(bpy)2](3+) (1, where Cp* = η(5)-pentamethylcyclopentadienyl, bpm = 2,2'-bipyrimidine, and bpy = 2,2'-bipyridine) has been determined in both acetonitrile (63.1 kcal mol(-1)) and water (29.7 kcal mol(-1)). Hydride 1 features a large increase in the hydride donor ability when the solvent is changed from acetonitrile to water. The acidity of 1, in contrast, is essentially solvent-independent because 1 remains strongly acidic in both solvents...
November 21, 2016: Inorganic Chemistry
https://www.readbyqxmd.com/read/27934038/in-situ-spectroscopic-identification-of-%C3%AE-oo-bridging-on-spinel-co3o4-water-oxidation-electrocatalyst
#15
Hsin-Yi Wang, Sung-Fu Hung, Ying-Ya Hsu, Lulu Zhang, Jianwei Miao, Ting-Shan Chan, Qihua Xiong, Bin Liu
The formation of μ-OO peroxide (Co-OO-Co) moieties on spinel Co3O4 electrocatalyst prior to the rise of the electrochemical oxygen evolution reaction (OER) current was identified by in situ spectroscopic methods. Through a combination of independent in situ X-ray absorption, grazing-angle X-ray diffraction, and Raman analysis, we observed a clear coincidence between the formation of μ-OO peroxide moieties and the rise of the anodic peak during OER. This finding implies that a chemical reaction step could be generally ignored before the onset of OER current...
December 1, 2016: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/27933056/characterization-of-three-novel-sxt-r391-integrating-conjugative-elements-icemfuind1a-and-icemfuind1b-and-icemprchn1-identified-in-the-genomes-of-marinomonas-fungiae-jcm-18476-t-and-marinomonas-profundimaris-strain-d104
#16
Jhasketan Badhai, Subrata K Das
The genus Marinomonas comprises Gram negative bacteria which are widespread in the marine environment and there is no report on the genomic analysis of SXT/R391 ICEs derived from this group of bacteria. This study describes the genomic features of three new SXT/R391 integrating conjugating elements (ICEs) identified in the genome of Marinomonas fungiae JCM 18476(T) (ICEMfuInd1a and ICEMfuInd1b) and in Marinomonas profundimaris strain D104 (ICEMprChn1). Structural organizations of the three ICEs were similar to the typical SXT/R391 family of ICEs and showed high degree of conservation in the core genes...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27933005/social-brain-hypothesis-vocal-and-gesture-networks-of-wild-chimpanzees
#17
Sam G B Roberts, Anna I Roberts
A key driver of brain evolution in primates and humans is the cognitive demands arising from managing social relationships. In primates, grooming plays a key role in maintaining these relationships, but the time that can be devoted to grooming is inherently limited. Communication may act as an additional, more time-efficient bonding mechanism to grooming, but how patterns of communication are related to patterns of sociality is still poorly understood. We used social network analysis to examine the associations between close proximity (duration of time spent within 10 m per hour spent in the same party), grooming, vocal communication, and gestural communication (duration of time and frequency of behavior per hour spent within 10 m) in wild chimpanzees...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27932543/members-of-the-zinc-cluster-factor-family-alters-virulence-in-candida-albicans
#18
Luca Issi, Rhys A Farrer, Kelly Pastor, Benjamin Landry, Toni Delorey, George W Bell, Dawn A Thompson, Christina A Cuomo, Reeta P Rao
Virtually all humans are colonized with Candida albicans However, in immunocompromised individuals this benign commensal organism becomes a serious, life-threatening pathogen. Here, we describe and analyze the regulatory networks that modulate innate responses in the host niches. We identified Zcf15 and Zcf29, two Zinc Cluster transcription Factors (ZCF) that are required for C. albicans virulence. Previous sequence analysis of clinical C. albicans isolates from immunocompromised patients indicates that both ZCF genes diverged during clonal evolution...
December 7, 2016: Genetics
https://www.readbyqxmd.com/read/27932516/global-analysis-of-regulatory-divergence-in-the-evolution-of-mouse-alternative-polyadenylation
#19
Mei-Sheng Xiao, Bin Zhang, Yi-Sheng Li, Qingsong Gao, Wei Sun, Wei Chen
Alternative polyadenylation (APA), which is regulated by both cis-elements and trans-factors, plays an important role in post-transcriptional regulation of eukaryotic gene expression. However, comparing to the extensively studied transcription and alternative splicing, the extent of APA divergence during evolution and the relative cis- and trans-contribution remain largely unexplored. To directly address these questions for the first time in mammals, by using deep sequencing-based methods, we measured APA divergence between C57BL/6J and SPRET/EiJ mouse strains as well as allele-specific APA pattern in their F1 hybrids...
December 8, 2016: Molecular Systems Biology
https://www.readbyqxmd.com/read/27932114/presence-of-t-275a-and-c-2152t-polymorphisms-of-the-promoter-region-of-uridine-diphosphate-glucuronosyltransferase-1a9-increases-mortality-from-digestive-tumors-results-after-10-years-of-follow-up-in-a-renal-transplant-population
#20
N Calvo, A Shabaka, B Rodriguez Cubillo, V López de la Manzanara, I Pérez-Flores, M A Moreno de la Higuera, J Bautista, A I Sánchez-Fructuoso
BACKGROUND: The aim of this study was to determine the distribution of uridine diphosphate-glucuronosyltransferase 1A9 (UGT1A9) promoter region T-275A and C-2152T single-nucleotide polymorphisms (SNPs) in stable transplant patients and to investigate the impact of these SNPs on the evolution of this population after 10 years of follow-up. METHODS: White renal transplant recipients (n = 873) were studied. The median time of follow-up was 91.8 months (P25-75 46-146)...
November 2016: Transplantation Proceedings
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