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https://www.readbyqxmd.com/read/28830117/analysis-of-dextromethorphan-and-dextrorphan-in-skeletal-remains-following-differential-microclimate-exposure-comparison-of-acute-vs-repeated-drug-exposure
#1
Lucas M Morrison, Kirk A Unger, James H Watterson
Analysis of dextromethorphan (DXM) and its metabolite dextrorphan (DXT) in skeletal remains of rats following acute (ACU, 75 mg/kg, IP, n = 10) or three repeated (REP, 25 mg/kg, IP, n = 10, 40-min interval) doses of DXM is described. Following dosing and euthanasia, rats decomposed outdoors to skeleton in two different microclimate environments (n = 5 ACU and n = 5 REP at each site): Site A (shaded forest microenvironment) and Site B (rocky substrate exposed to direct sunlight, 600 m from Site A). Two drug-free rats at each site served as negative controls...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830103/differential-fine-tuning-of-gene-expression-regulation-in-coffee-leaves-by-ccdreb1d-promoter-haplotypes-under-water-deficit
#2
Gabriel Sergio Costa Alves, Luana Ferreira Torres, Eveline Déchamp, Jean-Christophe Breitler, Thierry Joët, Frédéric Gatineau, Alan Carvalho Andrade, Benoît Bertrand, Pierre Marraccini, Hervé Etienne
Despite the importance of the DREB1D gene (also known as CBF4) in plant responses to water deficit and cold stress, studies analysing its regulation by transgenic approaches are lacking. In the current work, a functional study of three CcDREB1D promoter haplotypes (named HP15, HP16 and HP17) isolated from drought-tolerant and drought-sensitive clones of Coffea canephora was carried out in plants of C. arabica stably transformed by Agrobacterium tumefaciens by analysing their ability to regulate the expression of the uidA reporter gene in response to water deficit mimicked by polyethylene glycol (-2...
May 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28830102/transcriptional-regulatory-network-of-wox11-is-involved-in-the-control-of-crown-root-development-cytokinin-signals-and-redox-in-rice
#3
Wei Jiang, Shaoli Zhou, Qian Zhang, Huazhi Song, Dao-Xiu Zhou, Yu Zhao
The rice root system is mainly composed of post-embryonic shoot-borne roots called crown roots. WOX11, encoding a WUSCHEL-related homeobox domain transcription factor, is a key regulator of crown root growth and development in rice (Oryza sativa. L). In addition to specifically activating crown root development, WOX11 is also involved in lateral root initiation, root hair formation, and abiotic stresses. However, the gene regulatory network downstream of WOX11 remains largely unknown. Here, we studied the transcriptome of wox11 root tips by RNA-Seq and determined direct WOX11-binding targets by bioinformatic and biochemical analysis...
May 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28830089/unexpected-complexity-in-the-lactate-racemization-system-of-lactic-acid-bacteria
#4
Benoît Desguin, Patrice Soumillion, Robert P Hausinger, Pascal Hols
Analysis of lactate racemase (Lar) in lactic acid bacteria (LAB) has been a scientific challenge for many years, as indicated by the numerous contradictory reports on this activity. Recently, genetic and biochemical studies of the Lar system of Lactobacillus plantarum have unveiled the complexity of this particular enzymatic system. Lar activity is associated with LarA and its nickel-containing cofactor, synthesized from nicotinic acid adenine dinucleotide by the three biosynthetic enzymes: LarB, LarC, and LarE...
August 1, 2017: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/28830063/elucidating-mechanisms-of-toxic-action-of-dissolved-organic-chemicals-in-oil-sands-process-affected-water-ospw
#5
Garrett D Morandi, Steve B Wiseman, Miao Guan, Xiaowei W Zhang, Jonathan W Martin, John P Giesy
Oil sands process-affected water (OSPW) is generated during extraction of bitumen in the surface-mining oil sands industry in Alberta, Canada, and is acutely and chronically toxic to aquatic organisms. It is known that dissolved organic compounds in OSPW are responsible for most toxic effects, but knowledge of the specific mechanism(s) of toxicity, is limited. Using bioassay-based effects-directed analysis, the dissolved organic fraction of OSPW has previously been fractionated, ultimately producing refined samples of dissolved organic chemicals in OSPW, each with distinct chemical profiles...
August 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28830026/progesterone-therapy-induces-an-m1-to-m2-switch-in-microglia-phenotype-and-suppresses-nlrp3-inflammasome-in-a-cuprizone-induced-demyelination-mouse-model
#6
Roya Aryanpour, Parichehr Pasbakhsh, Kazem Zibara, Zeinab Namjoo, Fatemeh Beigi Boroujeni, Saeed Shahbeigi, Iraj Ragerdi Kashani, Cordian Beyer, Adib Zendehdel
Demyelination of the central nervous system (CNS) has been associated to reactive microglia in neurodegenerative disorders, such as multiple sclerosis (MS). The M1 microglia phenotype plays a pro-inflammatory role while M2 is involved in anti-inflammatory processes in the brain. In this study, CPZ-induced demyelination mouse model was used to investigate the effect of progesterone (PRO) therapy on microglia activation and neuro-inflammation. Results showed that progesterone therapy (CPZ+PRO) decreased neurological behavioral deficits, as demonstrated by significantly decreased escape latencies, in comparison to CPZ mice...
August 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28830009/humanization-of-jaa-f11-a-highly-specific-anti-thomsen-friedenreich-pancarcinoma-antibody-and-invitro-efficacy-analysis
#7
Swetha Tati, John C Fisk, Julia Abdullah, Loukia Karacosta, Taylor Chrisikos, Padraic Philbin, Susan Morey, Diala Ghazal, Fatma Zazala, Joseph Jessee, Sally Quataert, Stephen Koury, David Moreno, Jing Ying Eng, Vladislav V Glinsky, Olga V Glinskii, Muctarr Sesay, Anthony W Gebhard, Karamveer Birthare, James R Olson, Kate Rittenhouse-Olson
JAA-F11 is a highly specific mouse monoclonal to the Thomsen-Friedenreich Antigen (TF-Ag) which is an alpha-O-linked disaccharide antigen on the surface of ~80% of human carcinomas, including breast, lung, colon, bladder, ovarian, and prostate cancers, and is cryptic on normal cells. JAA-F11 has potential, when humanized, for cancer immunotherapy for multiple cancer types. Humanization of JAA-F11, was performed utilizing complementarity determining regions grafting on a homology framework. The objective herein is to test the specificity, affinity and biology efficacy of the humanized JAA-F11 (hJAA-F11)...
August 19, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28829888/mir-200c-inhibits-metastasis-of-breast-tumor-via-the-downregulation-of-foxf2
#8
T Zhang, J G Wan, J B Liu, M Deng
The forkhead box F2 (Foxf2) gene suppresses epithelial-mesenchymal transition via the modulation of transcription of zinc finger E-box-binding homeobox 1 (Zeb1) and epithelial (E)-cadherin, thereby inhibiting tumor metastasis. Additionally, the specific binding of microRNA (miR)-200c to Foxf2 mRNA impedes metastatic pulmonary cancer. However, the role of miR-200c in breast cancer is still unknown. Therefore, in this study, miR-200c mimics were transfected into the highly metastatic breast cancer cell line MDA-MB-231...
August 17, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28829887/correlation-analysis-of-adamts-4-vcam-1-and-tak1-expression-in-cartilage-tissue-from-spine-tuberculosis
#9
Z X Qiu, Z S Sha, X M Che, M Y Wang
A disintegrin and metalloproteinase with thrombospondin motifs 4 (ADAMTS-4) can effectively degrade articular cartilage matrix proteoglycan and damage the intervertebral disc of spinal tuberculosis patients, resulting in deterioration of the physical properties of articular cartilage. Transforming growth factor β activated kinase 1 (TAK1) is similar to vascular cell adhesion molecule 1 (VCAM-1) and closely related to a variety of pathophysiological processes. This study intended to explore the expression of ADAMTS-4, VCAM-1, and TAK1 in cartilage tissue obtained from spinal tuberculosis patients and their inter-relationships, aiming to provide new treatment approaches for spinal tuberculosis...
August 17, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28829885/genetic-diversity-analysis-in-malaysian-giant-prawns-using-expressed-sequence-tag-microsatellite-markers-for-stock-improvement-program
#10
K H Atin, A Christianus, N Fatin, A C Lutas, M Shabanimofrad, B Subha
The Malaysian giant prawn is among the most commonly cultured species of the genus Macrobrachium. Stocks of giant prawns from four rivers in Peninsular Malaysia have been used for aquaculture over the past 25 years, which has led to repeated harvesting, restocking, and transplantation between rivers. Consequently, a stock improvement program is now important to avoid the depletion of wild stocks and the loss of genetic diversity. However, the success of such an improvement program depends on our knowledge of the genetic variation of these base populations...
August 17, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28829846/racial-differences-in-the-extracellular-matrix-and-histone-acetylation-of-the-lamina-cribrosa-and-peripapillary-sclera
#11
Hae-Young Lopilly Park, Jie Hyun Kim, Younhea Jung, Chan Kee Park
Purpose: We investigated the extracellular matrix (ECM) of the lamina cribrosa (LC) and peripapillary sclera (PPS) and compared histone acetylation and related enzymes to identify racial differences between Korean and Caucasian donor eyes. Methods: Posterior segment tissues were obtained from 30 Caucasian donors and 42 age and axial length-matched Korean donors. Histone modification was assessed for histone deacetylase (HDAC) 2, HDAC3, and acetylated histone H3...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28829823/assessing-the-relationship-between-toxicity-and-economic-cost-of-oncological-target-agents-a-systematic-review-of-clinical-trials
#12
Francesca Tartari, Alessandro Conti, Roy Cerqueti
Target agents are peculiar oncological drugs which differ from the traditional therapies in their ability of recognizing specific molecules expressed by tumor cells and microenvironment. Thus, their toxicity is generally lower than that associated to chemotherapy, and they represent nowadays a new standard of care in a number of tumors. This paper deals with the relationship between economic costs and toxicity of target agents. At this aim, a cluster analysis-based exploration of the main features of a large collection of them is carried out, with a specific focus on the variables leading to the identification of their toxicity and related costs...
2017: PloS One
https://www.readbyqxmd.com/read/28829806/genome-engineering-in-bacillus-anthracis-using-tyrosine-site-specific-recombinases
#13
Andrei P Pomerantsev, Rita M McCall, Margaret Chahoud, Nathan K Hepler, Rasem Fattah, Stephen H Leppla
Tyrosine site-specific recombinases (T-SSR) are polynucleotidyltransferases that catalyze cutting and joining reactions between short specific DNA sequences. We developed three systems for performing genetic modifications in Bacillus anthracis that use T-SSR and their cognate target sequences, namely Escherichia coli bacteriophage P1 Cre-loxP, Saccharomyces cerevisiae Flp-FRT, and a newly discovered IntXO-PSL system from B. anthracis plasmid pXO1. All three tyrosine recombinase systems were used for creation of a B...
2017: PloS One
https://www.readbyqxmd.com/read/28829800/identification-of-protoplast-isolation-responsive-micrornas-in-citrus-reticulata-blanco-by-high-throughput-sequencing
#14
Xiaoyong Xu, Xiaoling Xu, Yipeng Zhou, Shaohua Zeng, Weiwen Kong
Protoplast isolation is a stress-inducing process, during which a variety of physiological and molecular alterations take place. Such stress response affects the expression of totipotency of cultured protoplasts. MicroRNAs (miRNAs) play important roles in plant growth, development and stress responses. However, the underlying mechanism of miRNAs involved in the protoplast totipotency remains unclear. In this study, high-throughput sequencing technology was used to sequence two populations of small RNA from calli and callus-derived protoplasts in Citrus reticulata Blanco...
2017: PloS One
https://www.readbyqxmd.com/read/28829792/effect-of-endurance-exercise-on-micrornas-in-myositis-skeletal-muscle-a-randomized-controlled-study
#15
Jessica F Boehler, Marshall W Hogarth, Matthew D Barberio, James S Novak, Svetlana Ghimbovschi, Kristy J Brown, Li Alemo Munters, Ingela Loell, Yi-Wen Chen, Heather Gordish-Dressman, Helene Alexanderson, Ingrid E Lundberg, Kanneboyina Nagaraju
OBJECTIVE: To identify changes in skeletal muscle microRNA expression after endurance exercise and associate the identified microRNAs with mRNA and protein expression to disease-specific pathways in polymyositis (PM) and dermatomyositis (DM) patients. METHODS: Following a parallel clinical trial design, patients with probable PM or DM, exercising less than once a week, and on stable medication for at least one month were randomized into two groups at Karolinska University Hospital: a 12-week endurance exercise group (n = 12) or a non-exercised control group (n = 11)...
2017: PloS One
https://www.readbyqxmd.com/read/28829774/a-large-scale-plasmodium-vivax-saimiri-boliviensis-trophozoite-schizont-transition-proteome
#16
D C Anderson, Stacey A Lapp, John W Barnwell, Mary R Galinski
Plasmodium vivax is a complex protozoan parasite with over 6,500 genes and stage-specific differential expression. Much of the unique biology of this pathogen remains unknown, including how it modifies and restructures the host reticulocyte. Using a recently published P. vivax reference genome, we report the proteome from two biological replicates of infected Saimiri boliviensis host reticulocytes undergoing transition from the late trophozoite to early schizont stages. Using five database search engines, we identified a total of 2000 P...
2017: PloS One
https://www.readbyqxmd.com/read/28829764/rna-helicase-dhx15-acts-as-a-tumour-suppressor-in-glioma
#17
Shingo Ito, Hideto Koso, Kazuhiro Sakamoto, Sumiko Watanabe
BACKGROUND: Glioblastoma is the most common form of malignant brain cancer and has a poor prognosis in adults. We identified Dhx15 as a candidate tumour suppressor gene in glioma by transposon-based mutagenesis. Dhx15 is an adenosine triphosphate (ATP)-dependent RNA helicase belonging to the DEAH-box (DHX) helicase family, but its role in cancer remains elusive. METHODS: DHX15 expression levels were examined in glioma cell lines. DHX15 functions were examined by gain- and loss-of-function analyses...
August 22, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28829761/rho-gtpase-activating-protein-18-a-biomarker-associated-with-good-prognosis-in-invasive-breast-cancer
#18
Mohammed A Aleskandarany, Sultan Sonbul, Rachel Surridge, Abhik Mukherjee, Carlos Caldas, Maria Diez-Rodriguez, Ibraheem Ashankyty, Khalil I Albrahim, Ahmed M Elmouna, Ritu Aneja, Stewart G Martin, Ian O Ellis, Andrew R Green, Emad A Rakha
BACKGROUND: The prognostic value of lymphovascular invasion (LVI) in breast cancer (BC) has been demonstrated in several independent studies. However, identification of driver molecules for LVI remains a challenging task. Large-scale transcriptomic profiling of histologically validated LVI can potentially identify genes that regulate LVI. METHODS: Integrative bio-informatics analyses of the METABRIC study were performed utilising a subset of strictly defined LVI using histological and immunohistochemical (IHC) criteria...
August 22, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28829688/test-retest-reliability-of-physiological-parameters-in-elite-junior-distance-runners-following-allometric-scaling
#19
Richard C Blagrove, Glyn Howatson, Philip R Hayes
This study aimed to quantify the intra-individual reliability of a number of physiological variables in a group of national and international young distance runners. Sixteen (8 male, 8 female) participants (16.7 ± 1.4 years) performed a submaximal incremental running assessment followed by a maximal running test, on two occasions separated by no more than seven days. Maximal oxygen uptake (V̇O2max), speed at V̇O2max (km h(-1)), running economy and speed and heart rate (HR) at fixed blood lactate concentrations were determined...
August 22, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28829631/in-vitro-evaluation-of-damage-by-heavy-metals-in-tight-and-gap-junctions-of-sertoli-cells
#20
Juan Ramos-Treviño, Susana Bassol-Mayagoitia, Pablo Ruiz-Flores, Perla Karina Espino-Silva, Odila Saucedo-Cárdenas, Sheila Adela Villa-Cedillo, Martha P Nava-Hernández
The Sertoli cell plays a vital role during the spermatogenesis process and has been identified as one of the main targets of the toxic action of heavy metals on the seminiferous epithelium. In the present work, the effect of lead (Pb), Arsenic (As), and Cadmium (Cd) in primary cultures of Sertoli cells was analyzed by measuring the expression of the genes Cldn11, Ocln, and Gja1 that participate in the tight and gap junctions, which are responsible for maintaining the blood-testis barrier. Sertoli cells were isolated from the testes of Wistar rats...
August 22, 2017: DNA and Cell Biology
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