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https://www.readbyqxmd.com/read/28550797/potential-tracers-for-tracking-septic-tank-effluent-discharges-in-watercourses
#1
Samia Richards, Paul J A Withers, Eric Paterson, Colin W McRoberts, Marc Stutter
Septic tank effluent (STE) contributes to catchment nutrient and pollutant loads. To assess the role of STE discharges in impairment of surface water, it is essential to identify the sources of pollution by tracing contaminants in watercourses. We examined tracers that were present in STE to establish their potential for identifying STE contamination in two stream systems (low and high dilution levels) against the background of upstream sources. The studied tracers were microbial, organic matter fluorescence, caffeine, artificial sweeteners and effluent chemical concentrations...
May 24, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28550783/occurrence-distribution-and-bioaccumulation-behaviour-of-hydrophobic-organic-contaminants-in-a-large-scale-constructed-wetland-in-singapore
#2
Qian Wang, Barry C Kelly
This study involved a field-based investigation to assess the occurrence, distribution and bioaccumulation behaviour of hydrophobic organic contaminants in a large-scale constructed wetland. Samples of raw leachate, water and wetland plants, Typha angustifolia, were collected for chemical analysis. Target contaminants included polychlorinated biphenyls (PCBs), organochlorine pesticides (OCP), as well as several halogenated flame retardants (HFRs) and personal care products (triclosan and synthetic musks). In addition to PCBs and OCPs, synthetic musks, triclosan (TCS) and dechlorane plus stereoisomers (syn- and anti-DPs) were frequently detected...
May 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28550674/-a-comparison-of-dosimetric-variance-for-external-beam-partial-breast-irradiation-using-three-dimensional-and-four-dimensional-computed-tomography
#3
B Guo, J B Li, W Wang, M Xu, Q Shao, T H Liu
Objective: To investigate the potential dosimetric benefits of four-dimensional computed tomography (4DCT) compared to three-dimensional CT (3DCT) in the planning of radiotherapy for external-beam partial breast irradiation (EB-PBI). Methods: Three-DCT and 4DCT scan sets were acquired for 20 patients who underwent EB-PBI. For each patient a conventional 3D conformal plan (3D-CRT) was generated based on end-inhalation phase (EI). The treatment plan based on the 4DCT EI phase images was copied and applied to the end-exhalation phase (EE) and 3DCT images (defined as EB-PBI(EI), EB-PBI(EE), EB-PBI(3D), respectively)...
April 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28550064/transient-silencing-of-dna-repair-genes-improves-targeted-gene-integration-in-the-filamentous-fungus-trichoderma-reesei
#4
Pak Yang Chum, Georg Schmidt, Markku Saloheimo, Christopher P Landowski
Trichoderma reesei is a filamentous fungus that is used world-wide to produce industrial enzymes. Industrial strains have traditionally been created though systematic strain improvement by mutagenesis and screening approaches. It is also desirable to specifically manipulate genes of the organism to further improve and modify the strain. Targeted integration in filamentous fungi is typically hampered by very low frequencies of homologous recombination. To address this limitation we have developed a simple transient method for silencing genes in T...
May 26, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28550025/mineralocorticoid-receptor-null-mice-informing-cell-type-specific-roles
#5
Timothy James Cole, Morag Young
The mineralocorticoid receptor (MR) mediates the actions of two important adrenal corticosteroid hormones, aldosterone and cortisol. The cell signalling roles of the MR in vivo have expanded enormously since the cloning of human MR gene 30 years ago and the first MR gene knockout in mice nearly 20 years ago. Complete ablation of the MR revealed important roles postnatally for regulation of kidney epithelial functions, with MR-null mice dying 1-2 weeks postnatally from renal salt wasting and hyperkalaemia, with elevated plasma renin and aldosterone...
May 26, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28549990/early-transcriptome-responses-of-the-bovine-midcycle-corpus-luteum-to-prostaglandin-f2%C3%AE-includes-cytokine-signaling
#6
Heather Talbott, Xiaoying Hou, Fang Qiu, Pan Zhang, Chittibabu Guda, Fang Yu, Robert A Cushman, Jennifer R Wood, Cheng Wang, Andrea S Cupp, John S Davis
In ruminants, prostaglandin F2alpha (PGF2α)-mediated luteolysis is essential prior to estrous cycle resumption, and is a target for improving fertility. To deduce early PGF2α-provoked changes in the corpus luteum a short time-course (0.5-4 h) was performed on cows at midcycle. A microarray-determined transcriptome was established and examined by bioinformatic pathway analysis. Classic PGF2α effects were evident by changes in early response genes (FOS, JUN, ATF3) and prediction of active pathways (PKC, MAPK)...
May 23, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28549912/fatty-liver-and-fgf21-physiology
#7
REVIEW
Eleftheria Maratos-Flier
Non alcoholic fatty liver disease is linked to obesity and the metabolic syndrome. As rates of obesity rise it has become the major etiology of liver dysfunction. Despite intense study the molecular mechanisms contributing to the onset of fatty liver remain debatable. Furthermore, few therapies exist and as a result dietary therapy is commonly prescribed and remains problematic. Fibroblast growth factor is a complex metabolic regulator that is synthesized in multiple organs including the liver, with resulting complex systemic effects...
May 23, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28549813/mining-terpenoids-production-and-biosynthetic-pathway-in-thraustochytrids
#8
REVIEW
Yunxuan Xie, Biswarup Sen, Guangyi Wang
Terpenoids are major bioactive compounds produced by microalgae and other eukaryotic microorganisms. Mining metabolic potential of marine microalgae for commercial production of terpenoids suggest thraustochytrids as one of the promising cell factories. The identification of potential thraustochytrid strains and relevant laboratory scale bioprocesses has been pursued largely. Further investigations in the improvement of terpenoids biosynthesis expect relevant molecular mechanisms to be understood directing metabolic engineering of the pathways...
May 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28549597/prolactin-receptor-targeting-in-breast-and-prostate-cancers-new-insights-into-an-old-challenge
#9
REVIEW
Vincent Goffin
In the era of precision medicine, the identification of new targets is a constant challenge to improve cancer therapy. Preclinical investigations, epidemiological studies and analyses of tissue specimens from patients strongly support the contribution of prolactin receptor (PRLR) signaling to breast and prostate tumorigenesis and cancer progression. Although a clear causative link with mutations of the genes encoding prolactin or its receptor is lacking, increased PRLR signaling in these cancers can be assessed by the overexpression of cognate proteins and is often confirmed by over-activation of downstream signaling effectors...
May 23, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28549483/whole-breast-and-regional-nodal-irradiation-in-prone-versus-supine-position-in-left-sided-breast-cancer
#10
Pieter Deseyne, Bruno Speleers, Wilfried De Neve, Bert Boute, Leen Paelinck, Tom Van Hoof, Joris Van de Velde, Annick Van Greveling, Chris Monten, Giselle Post, Herman Depypere, Liv Veldeman
BACKGROUND: Prone whole breast irradiation (WBI) leads to reduced heart and lung doses in breast cancer patients receiving adjuvant radiotherapy. In this feasibility trial, we investigated the prone position for whole breast + lymph node irradiation (WB + LNI). METHODS: A new support device was developed for optimal target coverage, on which patients are positioned in a position resembling a phase from the crawl swimming technique (prone crawl position)...
May 26, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28549128/atad3-gene-cluster-deletions-cause-cerebellar-dysfunction-associated-with-altered-mitochondrial-dna-and-cholesterol-metabolism
#11
Radha Desai, Ann E Frazier, Romina Durigon, Harshil Patel, Aleck W Jones, Ilaria Dalla Rosa, Nicole J Lake, Alison G Compton, Hayley S Mountford, Elena J Tucker, Alice L R Mitchell, Deborah Jackson, Abdul Sesay, Miriam Di Re, Lambert P van den Heuvel, Derek Burke, David Francis, Sebastian Lunke, George McGillivray, Simone Mandelstam, Fanny Mochel, Boris Keren, Claude Jardel, Anne M Turner, P Ian Andrews, Jan Smeitink, Johannes N Spelbrink, Simon J Heales, Masakazu Kohda, Akira Ohtake, Kei Murayama, Yasushi Okazaki, Anne Lombès, Ian J Holt, David R Thorburn, Antonella Spinazzola
Although mitochondrial disorders are clinically heterogeneous, they frequently involve the central nervous system and are among the most common neurogenetic disorders. Identifying the causal genes has benefited enormously from advances in high-throughput sequencing technologies; however, once the defect is known, researchers face the challenge of deciphering the underlying disease mechanism. Here we characterize large biallelic deletions in the region encoding the ATAD3C, ATAD3B and ATAD3A genes. Although high homology complicates genomic analysis of the ATAD3 defects, they can be identified by targeted analysis of standard single nucleotide polymorphism array and whole exome sequencing data...
June 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28548920/evaluation-of-biofidelity-of-thums-pedestrian-model-under-a-whole-body-impact-conditions-with-a-generic-sedan-buck
#12
Taotao Wu, Taewung Kim, Varun Bollapragada, David Poulard, Huipeng Chen, Matthew B Panzer, Jason L Forman, Jeff R Crandall, Bengt Pipkorn
OBJECTIVE: The goal of this study was to evaluate the biofidelity of the Total Human Model for Safety (THUMS; Ver. 4.01) pedestrian finite element models (PFEM) in a whole-body pedestrian impact condition using a well-characterized generic pedestrian buck model. METHODS: The biofidelity of THUMS PFEM was evaluated with respect to data from 3 full-scale postmortem human subject (PMHS) pedestrian impact tests, in which a pedestrian buck laterally struck the subjects using a pedestrian buck at 40 km/h...
May 29, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28548660/transcriptomic-and-micrornaomic-profiling-reveals-multi-faceted-mechanisms-to-cope-with-phosphate-stress-in-a-dinoflagellate
#13
Xinguo Shi, Xin Lin, Ling Li, Meizhen Li, Brian Palenik, Senjie Lin
Although gene regulation can occur at both transcriptional and epigenetic (microRNA) levels, combined transcriptomic and microRNAomic responses to environmental stress are still largely unexplored for marine plankton. Here, we conducted transcriptome and microRNAome sequencing for Prorocentrum donghaiense to understand the molecular mechanisms by which this dinoflagellate copes with phosphorus (P) deficiency. Under P-depleted conditions, G1/S specific cyclin gene was markedly downregulated, consistent with growth inhibition, and genes related to dissolved organic phosphorus (DOP) hydrolysis, carbon fixation, nitrate assimilation, glycolysis, and cellular motility were upregulated...
May 26, 2017: ISME Journal
https://www.readbyqxmd.com/read/28548624/changes-in-attachment-organization-emotion-dysregulation-and-interpersonal-problems-among-women-in-treatment-for-abuse
#14
Leah Keating, Robert T Muller, Catherine C Classen
OBJECTIVE: Women who have experienced childhood abuse often have interpersonal difficulties. The current study examines whether changes in emotion dysregulation mediate the relationship between changes in attachment patterns and changes in interpersonal problems among women who completed treatment for the sequelae of childhood abuse. METHOD: Participants were 36 women who completed a program targeting the psychological consequences of childhood maltreatment. At pre-and posttreatment, participants completed a projective assessment of adult attachment, and self-report measures of emotion dysregulation and interpersonal problems...
May 26, 2017: Journal of Trauma & Dissociation
https://www.readbyqxmd.com/read/28548030/everolimus-inhibited-multiple-isoforms-of-udp-glucuronosyltransferases-ugts
#15
Zuo Du, Guang Wang, Yun-Feng Cao, Cui-Min Hu, Kun Yang, Yong-Zhe Liu, Chun-Ze Zhang, Wei-Hua Zhang, Zhi-Tu Zhu, Hong-Zhi Sun, Xiao-Yu Sun, Mo Hong, Zhong-Ze Fang
1. Everolimus is an inhibitor of mammalian target of rapamycin (mTOR) and has been clinically utilized to prevent the rejection of organ transplants. This study aims to determine the inhibition of everolimus on the activity of phase II drug-metabolizing enzymes UDP-glucuronosyltransferases (UGTs). 2. The results showed that 100 uM of everolimus exerted more than 80% inhibition towards UGT1A1, -1A3, and -2B7. UGT1A3 and UGT2B7 were selected to elucidate the inhibition mechanism, and in silico docking showed that hydrogen bonds and hydrophobic interactions mainly contributed to the strong binding of everolimus towards the activity cavity of UGT1A3 and UGT2B7...
May 26, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28547993/conformational-heterogeneity-and-dna-recognition-by-the-morphogen-bicoid
#16
Ramkrishna Adhikary, Yun Xuan Tan, Jian Liu, Jörg Zimmermann, Matthew Holcomb, Carolyn Yvellez, Philip E Dawson, Floyd E Romesberg
The morphogenic activity of the Drosophila transcription factor bicoid (Bcd), the first morphogenic protein identified, is controlled by its DNA binding homeodomain. Homeodomains mediate developmental processes in all multicellular organisms, but the Bcd homeodomain appears to be unique as it can bind multiple DNA sequences and even RNA. All homeodomain proteins adopt a three-helix fold, with residues of the third helix mediating recognition of the nucleic acid target via interactions with the major groove...
May 26, 2017: Biochemistry
https://www.readbyqxmd.com/read/28547857/confocal-endomicroscopy-in-diagnosis-of-intestinal-chronic-graft-versus-host-disease
#17
Kathrin Rieger, Ute Günther, Ulrike Erben, Anja Kühl, Christoph Loddenkemper, Antonio Pezzutto, Britta Siegmund, Christian Bojarski
Graft-versus-host disease (GvHD) is a major complication of allogeneic stem cell transplantation. High-resolution in vivo histology of the intestine by confocal endomicroscopy (CEM) detects acute GvHD (aGvHD) with high sensitivity. This pilot study aims to evaluate the diagnostic value of CEM for intestinal chronic GvHD (cGvHD). The study included 20 patients with gastrointestinal symptoms and confirmed cGvHD in other organs as well as 20 patients with clinically suspected acute GvHD for control. Confocal endomicroscopy was performed as gastroscopy followed by sigmoidoscopy after intravenous injection of fluorescein (10%) and topical application of acriflavine (0...
May 25, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28547377/the-excessive-enrichment-of-trace-elements-in-migratory-and-breeding-red-crowned-cranes-grus-japonensis-in-china
#18
Luo Jinming, Wang Yongjie, Gao Zhongyan, Wang Wenfeng
The excessive enrichment of trace elements, such as Pb and Cd, from food may contribute to the decline of migratory red-crowned cranes (Grus japonensis) in China. To test this prediction, we determined the concentrations of Pb and Cd, as well as further macro and trace elements (Ca, Mg, Cu, Zn) in the target species and their prey (sediment, reed root, mollusk, arthropods, and common fish species) in both the wintering (Yancheng wetland) and breeding sites (Zhalong wetland) of cranes in China. The maximum concentrations of Pb (130 mg kg(-1) dry weight (dw)) and Cd (10...
May 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28547343/msmir156-affects-global-gene-expression-and-promotes-root-regenerative-capacity-and-nitrogen-fixation-activity-in-alfalfa
#19
Banyar Aung, Ruimin Gao, Margaret Y Gruber, Ze-Chun Yuan, Mark Sumarah, Abdelali Hannoufa
MicroRNA156 (miR156) regulates a network of downstream genes to affect plant growth and development. We previously generated alfalfa (Medicago sativa) plants that overexpress homologous miR156 (MsmiR156OE), and identified three of its SPL target genes. These plants exhibited increased vegetative yield, delayed flowering and longer roots. In this study, we aimed to elucidate the effect of miR156 on the root system, including effect on nodulation and nitrogen fixation. We found that MsmiR156 overexpression increases root regeneration capacity in alfalfa, but with little effect on root biomass at the early stages of root development...
May 25, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28546901/macrophages-as-effectors-of-acute-and-chronic-allograft-injury
#20
Yianzhu Liu, Malgorzata Kloc, Xian C Li
Organ transplants give a second chance of life to patients with end-stage organ failure. However, the immuno-logical barriers prove to be very challenging to overcome and graft rejection remains a major hurdle to long-term transplant survival. For decades, adaptive immunity has been the focus of studies, primarily based on the belief that T cells are necessary and sufficient for rejection. With better-developed immunosuppressive drugs and protocols that effectively control adaptive cells, innate immune cells have emerged as key effector cells in triggering graft injury and have therefore attracted much recent attention...
December 2016: Current Transplantation Reports
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