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https://www.readbyqxmd.com/read/28647840/interaction-of-ferulic-acid-with-glutathione-s-transferase-and-carboxylesterase-genes-in-the-brown-planthopper-nilaparvata-lugens
#1
Jun Yang, Xiao-Qin Sun, Shu-Ying Yan, Wen-Jun Pan, Mao-Xin Zhang, Qing-Nian Cai
Plant phenolics are crucial defense phytochemicals against herbivores and glutathione S-transferase (GST) and carboxylesterase (CarE) in herbivorous insects are well-known detoxification enzymes for such xenobiotics. To understand relationship between a plant phenolic and herbivore GST or CarE genes, we evaluated the relationship between a rice phenolic ferulic acid and resistance to brown planthopper (BPH, Nilaparvata lugens), and investigated the interaction of ferulic acid with GST or CarE genes in BPH. The results indicate that ferulic acid content in tested rice varieties was highly associated with resistance to BPH...
June 24, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28647649/recovery-after-pilp-remineralization-of-dentin-lesions-created-with-two-cariogenic-acids
#2
K Saeki, Y-C Chien, G Nonomura, A F Chin, S Habelitz, L B Gower, S J Marshall, G W Marshall
OBJECTIVES: Acetate and lactate are important cariogenic acids produced by oral bacteria. They produced different residual dentin structures in artificial lesions of similar depth. We evaluated if such lesions responded in the same way to a polymer-induced-liquid-precursor (PILP) remineralization. DESIGN: Dentin blocks obtained from human third molars, divided into 6 groups (n=3). Blocks were demineralized with acetate (66h) or lactate (168h) buffer at pH 5.0 to create 140μm target lesion depths...
June 15, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28647497/prediction-of-metastasis-in-advanced-colorectal-carcinomas-using-cgh-data
#3
Ehsan Saghapour, Mohammadreza Sehhati
Logistic Regression Model (LRM) and artificial neural networks (ANNs) as two nonlinear models have been used to establish a novel two-stage hybrid modeling procedure for prediction of metastasis in advanced colorectal carcinomas. Two different datasets were used in training and testing procedures. For the first stage of hybrid modeling procedure, LRM was used to evaluate the contribution of DNA sequence copy number aberrations detected by Comparative Genomic Hybridization in advanced colorectal carcinoma and its metastasis...
June 21, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28647250/constructed-wetlands-for-wastewater-treatment-in-cold-climate-a-review
#4
REVIEW
Mo Wang, Dong Qing Zhang, Jian Wen Dong, Soon Keat Tan
Constructed wetlands (CWs) have been successfully used for treating various wastewaters for decades and have been identified as a sustainable wastewater management option worldwide. However, the application of CW for wastewater treatment in frigid climate presents special challenges. Wetland treatment of wastewater relies largely on biological processes, and reliable treatment is often a function of climate conditions. To date, the rate of adoption of wetland technology for wastewater treatment in cold regions has been slow and there are relatively few published reports on CW applications in cold climate...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647224/does-artificial-aging-affect-mechanical-properties-of-cad-cam-composite-materials
#5
Ferhan Egilmez, Gulfem Ergun, Isil Cekic-Nagas, Pekka K Vallittu, Lippo V J Lassila
PURPOSE: The purpose of this study was to determine the flexural strength and Weibull characteristics of different CAD/CAM materials after different in vitro aging conditions. METHODS: The specimens were randomly assigned to one of the six in vitro aging conditions: (1) water storage (37°C, 3 weeks), (2) boiling water (24h), (3) hydrochloric acid exposure (pH: 1.2, 24h), (4) autoclave treatment (134°C, 200kPa, 12h), (5) thermal cycling (5000 times, 5-55°C), (6) cyclic loading (100N, 50,000 cycles)...
June 21, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28647140/improve-artificial-neural-network-for-medical-analysis-diagnosis-and-prediction
#6
Yang Fei, Wei-Qin Li
No abstract text is available yet for this article.
June 16, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28646749/mutually-facilitated-co-transport-of-two-different-viruses-through-reactive-porous-media
#7
Shuang Xu, Ramesh Attinti, Elizabeth Adams, Jie Wei, Kalmia Kniel, Jie Zhuang, Yan Jin
In this study, we quantified transport and retention behaviors of a human pathogenic virus (Adenovirus 41, abbreviated as Ad-41) and a model bacteriophage (ϕX174) through metal oxide-removed and goethite-coated sand under saturated flow conditions. Two sets of bench scale column experiments were conducted: transport of each type of viruses alone and co-transport of both viruses. All experiments were conducted at pH 7.5 using 2 mM artificial ground water (AGW) buffer as background solution. Experimental results revealed that goethite-coated sand (i...
June 18, 2017: Water Research
https://www.readbyqxmd.com/read/28646736/cell-damage-caused-by-ultraviolet-b-radiation-in-the-desert-cyanobacterium-phormidium-tenue-and-its-recovery-process
#8
Gaohong Wang, Songqiang Deng, Jiafeng Liu, Chaoran Ye, Xiangjun Zhou, Lanzhou Chen
Phormidium tenue, a cyanobacterium that grows in the topsoil of biological soil crusts (BSCs), has the highest recovery rate among desert crust cyanobacteria after exposure to ultraviolet B (UV-B) radiation. However, the mechanism underlying its recovery process is unclear. To address this issue, we measured chlorophyll a fluorescence, generation of reactive oxygen species (ROS), lipid peroxidation, and repair of DNA breakage in P. tenue following exposure to UV-B. We found that UV-B radiation at all doses tested reduced photosynthesis and induced cell damage in P...
June 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28646396/enhanced-phytoextraction-of-lead-from-artificially-contaminated-soil-by-mirabilis-jalapa-with-chelating-agents
#9
Li Yan, Cuilan Li, Jinjing Zhang, Odeshnee Moodley, Shuoran Liu, Chang Lan, Qiang Gao, Wenjing Zhang
A microcosm experiment was conducted to compare how different chelating agents enhance the phytoextraction of lead (Pb) by Mirabilis jalapa from an artificially Pb-contaminated soil. Chelating agents used included ethylene diamine tetraacetic acid (EDTA), nitrilotriacetic acid (NTA), ethylene diamine disuccinic acid (EDDS), oxalic acid, humic acid, citric acid and tartaric acid, with concentrations ranging from 0 to 2000 mg/kg. Results show that with increasing concentrations of chelating agents, the concentrations, bioaccumulation coefficients, and translocation factors of Pb in M...
June 23, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28646058/semen-collection-methods-in-alpacas
#10
REVIEW
M C Abraham, K de Verdier, R Båge, J M Morrell
South American camelids, particularly alpacas, are gaining in popularity outside their native lands. Reproductive biotechnologies, such as artificial insemination or embryo transfer with cryopreserved embryos, are more complicated in these species than many others due to differences in their reproductive physiology compared to the more commonly encountered domestic livestock. This article reviews the methods currently available for obtaining semen or spermatozoa from alpacas and describes some of the problems associated with handling the viscous seminal plasma characteristic of camelids...
June 24, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28646035/a-matter-of-life-and-death
#11
Justice Baker
Cases concerning the withdrawal or withholding of artificial nutrition and hydration from patients in a vegetative or minimally conscious state raise difficult medical, legal and ethical questions including the diagnosis and classification of disorders of consciousness, the legal processes to be followed, and the legal and ethical principles to be applied when making decisions. There is also an issue as to whether it is necessary or appropriate for such decisions to be taken by judges. This article, based on a lecture given in Oxford in October 2016, considers a number of these issues and concludes that any consideration of the question from the patient's point of view must include an objective analysis of what is in his or her best interests, as well as subjective expressions of wishes and feelings...
June 23, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28645918/phosphorylation-of-argonaute-proteins-affects-mrna-binding-and-is-essential-for-microrna-guided-gene-silencing-in%C3%A2-vivo
#12
Miguel Quévillon Huberdeau, Daniela M Zeitler, Judith Hauptmann, Astrid Bruckmann, Lucile Fressigné, Johannes Danner, Sandra Piquet, Nicholas Strieder, Julia C Engelmann, Guillaume Jannot, Rainer Deutzmann, Martin J Simard, Gunter Meister
Argonaute proteins associate with microRNAs and are key components of gene silencing pathways. With such a pivotal role, these proteins represent ideal targets for regulatory post-translational modifications. Using quantitative mass spectrometry, we find that a C-terminal serine/threonine cluster is phosphorylated at five different residues in human and Caenorhabditis elegans In human, hyper-phosphorylation does not affect microRNA binding, localization, or cleavage activity of Ago2. However, mRNA binding is strongly affected...
June 23, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28645850/biomechanical-analysis-using-fea-and-experiments-of-a-standard-plate-method-versus-three-cable-methods-for-fixing-acetabular-fractures-with-simultaneous-tha
#13
Mina S R Aziz, Omar Dessouki, Saeid Samiezadeh, Habiba Bougherara, Emil H Schemitsch, Radovan Zdero
Acetabular fractures potentially account for up to half of all pelvic fractures, while pelvic fractures potentially account for over one-tenth of all human bone fractures. This is the first biomechanical study to assess acetabular fracture fixation using plates versus cables in the presence of a total hip arthroplasty, as done for the elderly. In Phase 1, finite element (FE) models compared a standard plate method versus 3 cable methods for repairing an acetabular fracture (type: anterior column plus posterior hemi-transverse) subjected to a physiological-type compressive load of 2207N representing 3 x body weight for a 75kg person during walking...
June 20, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28645664/muscle-activity-and-masticatory-efficiency-with-bilateral-extension-base-removable-partial-dentures-with-different-cusp-angles
#14
Mahmoud K Al-Omiri
STATEMENT OF PROBLEM: Whether masticatory efficiency and electromyographic activity are influenced by type of artificial teeth and food is unclear. PURPOSE: The purpose of this clinical study was to evaluate the influence of extension base removable partial dentures (RPDs) with different cusp angles: anatomic (33 degrees), semianatomic (20 degrees), and nonanatomic (0 degrees) teeth on masticatory efficiency and muscle activity during the mastication of test foods with different textures...
June 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28645641/homogenizing-bacterial-cell-factories-analysis-and-engineering-of-phenotypic-heterogeneity
#15
REVIEW
Dennis Binder, Thomas Drepper, Karl-Erich Jaeger, Frank Delvigne, Wolfgang Wiechert, Dietrich Kohlheyer, Alexander Grünberger
In natural habitats, microbes form multispecies communities that commonly face rapidly changing and highly competitive environments. Thus, phenotypic heterogeneity has evolved as an innate and important survival strategy to gain an overall fitness advantage over cohabiting competitors. However, in defined artificial environments such as monocultures in small- to large-scale bioreactors, cell-to-cell variations are presumed to cause reduced production yields as well as process instability. Hence, engineering microbial production toward phenotypic homogeneity is a highly promising approach for synthetic biology and bioprocess optimization...
June 20, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28645168/genomic-reconstruction-of-the-history-of-native-sheep-reveals-the-peopling-patterns-of-nomads-and-the-expansion-of-early-pastoralism-in-east-asia
#16
Yong-Xin Zhao, Ji Yang, Feng-Hua Lv, Xiao-Ju Hu, Xing-Long Xie, Min Zhang, Wen-Rong Li, Ming-Jun Liu, Yu-Tao Wang, Jin-Quan Li, Yong-Gang Liu, Yan-Ling Ren, Feng Wang, EEr Hehua, Juha Kantanen, Johannes Arjen Lenstra, Jian-Lin Han, Meng-Hua Li
China has a rich resource of native sheep (Ovis aries) breeds associated with historical movements of several nomadic societies. However, the history of sheep and the associated nomadic societies in ancient China remains poorly understood. Here, we studied the genomic diversity of Chinese sheep using genome-wide SNPs, mitochondrial and Y-chromosomal variations in more than 1,000 modern samples. Population genomic analyses combined with archaeological records and historical ethnic demographics data revealed genetic signatures of their origins, secondary expansions and admixtures, thereby revealing the peopling patterns of nomads and the expansion of early pastoralism in East Asia...
June 22, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28645053/assessment-of-imaging-in-flow-system-flowcam-for-systematic-ballast-water-management
#17
Leonardo Romero-Martínez, Cees van Slooten, Enrique Nebot, Asunción Acevedo-Merino, Louis Peperzak
Assessing the disinfection of ballast water and its compliance with international standards requires determining the size, viability, and concentration of planktonic organisms. The FlowCAM (Flow Cytometer and Microscope) is an Imaging Flow Cytometry designed to obtain the particle concentration, images, and quantitative morphologic information. The objective in this paper is to establish the basis for transforming the FlowCAM from being a laboratory analyzer into a tool for systematic monitoring of ballast water...
June 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28644985/depressive-like-behavior-is-elevated-among-offspring-of-parents-exposed-to-dim-light-at-night-prior-to-mating
#18
Yasmine M Cissé, Kathryn L G Russart, Randy J Nelson
Rates of major depressive disorder (MDD) have steadily increased over the past 50 years. Many factors have been implicated in the etiology of depressive disorders and environmental influences are being increasingly recognized. The increase in depression rates has coincided with increased artificial nighttime lighting. Exposure to light at night (LAN) has been associated with increased depressive-like behavior in rodents and decreased mood in humans. However, relatively little is known on the multigenerational effects of dLAN on affect...
June 12, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28644973/il-18-il-15-il-12-synergy-induces-elevated-and-prolonged-ifn-%C3%AE-production-by-ex-vivo-expanded-nk-cells-which-is-not-due-to-enhanced-stat4-activation
#19
Evan Lusty, Sophie M Poznanski, Karen Kwofie, Talveer S Mandur, Dean A Lee, Carl D Richards, Ali A Ashkar
The synergistic effect of IL-18/IL-15/IL-12 stimulation potently activates NK cells, inducing high levels of IFN-γ production. As a result of this potent stimulatory effect, NK cell pre-activation with IL-18/IL-15/IL-12 is being developed as a cancer immunotherapy. Ex vivo expansion of NK cells enables the efficient generation of large numbers of NK cells for wide-scale and repeated therapeutic use, and is thus an important source of NK cells for clinical application. However, the effects of IL-18/IL-15/IL-12 stimulation on ex vivo expanded NK cells have not yet been assessed...
June 20, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28644884/ligand-induced-rapid-skeletal-muscle-atrophy-in-hsa-fv2e-perk-transgenic-mice
#20
Masato Miyake, Masashi Kuroda, Hiroshi Kiyonari, Kenji Takehana, Satoshi Hisanaga, Masatoshi Morimoto, Jun Zhang, Miho Oyadomari, Hiroshi Sakaue, Seiichi Oyadomari
BACKGROUND: Formation of 43S and 48S preinitiation complexes plays an important role in muscle protein synthesis. There is no muscle-wasting mouse model caused by a repressed 43S preinitiation complex assembly. OBJECTIVE: The aim of the present study was to develop a convenient mouse model of skeletal muscle wasting with repressed 43S preinitiation complex assembly. MATERIAL AND METHODS: A ligand-activatable PERK derivative Fv2E-PERK causes the phosphorylation of eukaryotic initiation factor 2α (eIF2α), which inhibits 43S preinitiation complex assembly...
2017: PloS One
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