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https://www.readbyqxmd.com/read/28641392/alcohol-is-not-protective-against-mortality-following-traumatic-brain-injury
#1
Jennifer S Albrecht, Majid Afshar, Deborah M Stein, Gordon S Smith
Alcohol exposure results in reduced mortality following traumatic brain injury (TBI) in animal models, yet clinical studies reported conflicting results and clinical trials based on proposed mechanisms have been disappointing. Methodological issues common to many of the clinical studies may have contributed to spurious results. Our objective was to evaluate the association between blood alcohol concentration (BAC) and in-hospital mortality following TBI, overcoming methodological problems of prior studies. We conducted a retrospective cohort study on individuals treated for isolated TBI at the R Adams Cowley Shock Trauma Center between 1997-2012 (n = 1,084)...
June 21, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28641285/role-of-glycyrrhizin-in-the-reduction-of-inflammation-in-diabetic-kidney-disease
#2
Vikram Thakur, Syeda Nargis, Mayra Gonzalez, Swetak Pradhan, Daniel Terreros, Munmun Chattopadhyay
BACKGROUND: Diabetic kidney disease (DKD) is one of the most debilitating complications of type 2 diabetes. Recent evidence suggests chronic inflammation to be one of the causal factors of DKD. The mechanisms entailed are not completely elucidated except that a variety of cytokines play a major role in this process. High mobility group box 1 (HMGB1) is a pro-inflammatory toll-like receptor-4 (TLR4)-binding cytokine that is involved in inflammation-associated gene expression. This investigation was designed to assess the involvement of HMGB1, TLR-4, and nuclear factor (NF)-κB in the development of DKD and to evaluate that whether blocking HMGB1 by its natural inhibitor Glycyrrhizin (GLC) can reduce the progression of the disease...
June 23, 2017: Nephron
https://www.readbyqxmd.com/read/28641263/radian-visual-exploration-of-traceroutes
#3
Massimo Candela, Marco Di Bartolomeo, Giuseppe Di Battista, Claudio Squarcella
Several projects deploy probes in the Internet. Probes are systems that continuously perform traceroutes and other networking measurements (e.g. ping) towards selected targets. Measurements can be stored and analyzed to gain knowledge on several aspects of the Internet, but making sense of such data requires suitable methods and tools for exploration and visualization. We present Radian, a tool that allows to visualize traceroute paths at different levels of detail and to animate their evolution during a selected time interval...
June 19, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28641208/an-associative-account-of-the-development-of-word-learning
#4
Vladimir M Sloutsky, Hyungwook Yim, Xin Yao, Simon Dennis
Word learning is a notoriously difficult induction problem because meaning is underdetermined by positive examples. How do children solve this problem? Some have argued that word learning is achieved by means of inference: young word learners rely on a number of assumptions that reduce the overall hypothesis space by favoring some meanings over others. However, these approaches have difficulty explaining how words are learned from conversations or text, without pointing or explicit instruction. In this research, we propose an associative mechanism that can account for such learning...
June 19, 2017: Cognitive Psychology
https://www.readbyqxmd.com/read/28641133/abc-transporters-in-megakaryopoiesis-and-platelet-activity
#5
REVIEW
Wei Wang, Lorena Buitrago, Ying Wang
ATP-binding cassette (ABC) is a family of transporters that facilitates the translocation of substrates across cell membrane using its ATPase subunit. These transporters have key roles in multidrug resistance, lipid homeostasis, antigen processing, immunity, cell proliferation and hematopoiesis. Some ABC transporters are selectively expressed on megakaryocyte progenitor, megakaryocyte and its cellular fragment platelet. However, the role of ABC transporters in hemostasis and thrombosis were not well explored until recently...
June 14, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28641125/an-altered-redox-environment-assisted-by-over-expression-of-fetal-hemoglobins-protects-from-inflammatory-colitis-and-reduces-inflammatory-cytokine-expression
#6
R M Gorczynski, C Alexander, K Brandenburg, Z Chen, A Heini, D Neumann, J P Mach, E T Rietschel, A Tersikh, A J Ulmer, Kai Yu, U Zahringer, I Khatri
C5BL/6 female mice receiving dextran sodium sulfate in their drinking water develop an acute inflammatory colitis within 7d, with weight loss, histopathologic signs of inflammation, and colonic expression of inflammatory cytokines. In previous studies we have reported that increased inflammatory cytokine expression in aged mice can be attenuated by oral gavage of a crude fetal extract containing glutathione (GSH), MPLA and fetal hemoglobin, or more specifically by injection of a combination of these purified reagents...
June 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28641121/is-inhibitory-control-involved-in-discriminating-pseudowords-that-contain-the-reversible-letters-b-and-d
#7
Lorie-Marlène Brault Foisy, Emmanuel Ahr, Steve Masson, Olivier Houdé, Grégoire Borst
Children tend to confuse reversible letters such as b and d when they start learning to read. According to some authors, mirror errors are a consequence of the mirror generalization (MG) process that allows one to recognize objects independently of their left-right orientation. Although MG is advantageous for the visual recognition of objects, it is detrimental for the visual recognition of reversible letters. Previous studies comparing novice and expert readers demonstrated that MG must be inhibited to discriminate reversible single letters...
June 19, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28641115/feature-integration-drives-probabilistic-behavior-in-the-drosophila-escape-response
#8
Catherine R von Reyn, Aljoscha Nern, W Ryan Williamson, Patrick Breads, Ming Wu, Shigehiro Namiki, Gwyneth M Card
Animals rely on dedicated sensory circuits to extract and encode environmental features. How individual neurons integrate and translate these features into behavioral responses remains a major question. Here, we identify a visual projection neuron type that conveys predator approach information to the Drosophila giant fiber (GF) escape circuit. Genetic removal of this input during looming stimuli reveals that it encodes angular expansion velocity, whereas other input cell type(s) encode angular size. Motor program selection and timing emerge from linear integration of these two features within the GF...
June 21, 2017: Neuron
https://www.readbyqxmd.com/read/28641108/high-speed-and-scalable-whole-brain-imaging-in-rodents-and-primates
#9
Kaoru Seiriki, Atsushi Kasai, Takeshi Hashimoto, Wiebke Schulze, Misaki Niu, Shun Yamaguchi, Takanobu Nakazawa, Ken-Ichi Inoue, Shiori Uezono, Masahiko Takada, Yuichiro Naka, Hisato Igarashi, Masato Tanuma, James A Waschek, Yukio Ago, Kenji F Tanaka, Atsuko Hayata-Takano, Kazuki Nagayasu, Norihito Shintani, Ryota Hashimoto, Yasuto Kunii, Mizuki Hino, Junya Matsumoto, Hirooki Yabe, Takeharu Nagai, Katsumasa Fujita, Toshio Matsuda, Kazuhiro Takuma, Akemichi Baba, Hitoshi Hashimoto
Subcellular resolution imaging of the whole brain and subsequent image analysis are prerequisites for understanding anatomical and functional brain networks. Here, we have developed a very high-speed serial-sectioning imaging system named FAST (block-face serial microscopy tomography), which acquires high-resolution images of a whole mouse brain in a speed range comparable to that of light-sheet fluorescence microscopy. FAST enables complete visualization of the brain at a resolution sufficient to resolve all cells and their subcellular structures...
June 21, 2017: Neuron
https://www.readbyqxmd.com/read/28641106/antisense-oligonucleotides-translation-from-mouse-models-to-human-neurodegenerative-diseases
#10
REVIEW
Kathleen M Schoch, Timothy M Miller
Multiple neurodegenerative diseases are characterized by single-protein dysfunction and aggregation. Treatment strategies for these diseases have often targeted downstream pathways to ameliorate consequences of protein dysfunction; however, targeting the source of that dysfunction, the affected protein itself, seems most judicious to achieve a highly effective therapeutic outcome. Antisense oligonucleotides (ASOs) are small sequences of DNA able to target RNA transcripts, resulting in reduced or modified protein expression...
June 21, 2017: Neuron
https://www.readbyqxmd.com/read/28641017/nanpdb-a-resource-for-natural-products-from-northern-african-sources
#11
Fidele Ntie-Kang, Kiran K Telukunta, Kersten Döring, Conrad V Simoben, Aurélien F A Moumbock, Yvette I Malange, Leonel E Njume, Joseph N Yong, Wolfgang Sippl, Stefan Günther
Natural products (NPs) are often regarded as sources of drugs or drug leads or simply as a "source of inspiration" for the discovery of novel drugs. We have built the Northern African Natural Products Database (NANPDB) by collecting information on ∼4500 NPs, covering literature data for the period from 1962 to 2016. The data cover compounds isolated mainly from plants, with contributions from some endophyte, animal (e.g., coral), fungal, and bacterial sources. The compounds were identified from 617 source species, belonging to 146 families...
June 22, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28640945/production-of-human-vitronectin-in-nicotiana-benthamiana-using-the-inpact-hyper-expression-platform
#12
Benjamin Dugdale, Maiko Kato, Pradeep Deo, Manuel Plan, Mark Harrison, Robyn Lloyd, Terry Walsh, Robert Harding, James Dale
Human vitronectin (hVN) is a glycoprotein that functions as a cell adhesion molecule and a regulator of coagulation in blood plasma and the extracellular matrix. In vitro, hVN is added to serum-free media in order to promote the adhesion of animal cells to tissue culture surfaces and the proliferation of undifferentiated stem cells. Here, we report the production of hVN in Nicotiana benthamiana using the inducible In Plant Activation (INPACT) hyper-expression platform. N. benthamiana plants were transformed with an INPACT expression cassette encoding hVN, and both the Tobacco yellow dwarf virus Rep/RepA activator and Tomato bushy stunt virus p19 gene under the transcriptional control of the ethanol-inducible AlcR:alcA gene switch...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640908/evaluating-diagnostic-tests-for-bovine-tuberculosis-in-the-southern-part-of-germany-a-latent-class-analysis
#13
Valerie-Beau Pucken, Gabriela Knubben-Schweizer, Dörte Döpfer, Andreas Groll, Angela Hafner-Marx, Stefan Hörmansdorfer, Carola Sauter-Louis, Reinhard K Straubinger, Pia Zimmermann, Sonja Hartnack
Germany has been officially free of bovine tuberculosis since 1996. However, in the last years there has been an increase of bovine tuberculosis cases, particularly in the southern part of Germany, in the Allgäu region. As a consequence a one-time tuberculosis surveillance program was revisited with different premortal and postmortal tests. The aim of this paper was to estimate diagnostic sensitivities and specificities of the different tests used within this surveillance program. In the absence of a perfect test with 100% sensitivity and 100% specificity, thus in the absence of a gold standard, a Bayesian latent class approach with two different datasets was performed...
2017: PloS One
https://www.readbyqxmd.com/read/28640904/correlation-of-disease-severity-with-body-weight-and-high-fat-diet-in-the-fatzo-pco-mouse
#14
Brian A Droz, Bria L Sneed, Charles V Jackson, Karen M Zimmerman, M Dodson Michael, Paul J Emmerson, Tamer Coskun, Richard G Peterson
Obesity in many current pre-clinical animal models of obesity and diabetes is mediated by monogenic mutations; these are rarely associated with the development of human obesity. A new mouse model, the FATZO mouse, has been developed to provide polygenic obesity and a metabolic pattern of hyperglycemia and hyperinsulinemia, that support the presence of insulin resistance similar to metabolic disease in patients with insulin resistance/type 2 diabetes. The FATZO mouse resulted from a cross of C57BL/6J and AKR/J mice followed by selective inbreeding for obesity, increased insulin and hyperglycemia...
2017: PloS One
https://www.readbyqxmd.com/read/28640888/mechanisms-of-acute-neurovascular-protection-with-at1-blockade-after-stroke-effect-of-prestroke-hypertension
#15
Ahmed Alhusban, Anna Kozak, Bindu Pillai, Heba Ahmed, Mohammed A Sayed, Maribeth H Johnson, Tauheed Ishrat, Adviye Ergul, Susan C Fagan
Stroke is a leading cause of adult disability worldwide. Improving stroke outcome requires an orchestrated interplay that involves up regulation of pro-survival pathways and a concomitant suppression of pro-apoptotic mediators. In this investigation, we assessed the involvement of eNOS in the AT1 blocker-mediated protective and pro-recovery effects in animals with hypertension. We also evaluated the effect of acute eNOS inhibition in hypertensive animals. To achieve these goals, spontaneously hypertensive rats (SHR) were implanted with blood pressure transmitters, and randomized to receive either an eNOS inhibitor (L-NIO) or saline one hour before cerebral ischemia induction...
2017: PloS One
https://www.readbyqxmd.com/read/28640863/induced-pluripotent-stem-cell-derived-limbal-epithelial-cells-lipsc-as-a-cellular-alternative-for-in-vitro-ocular-toxicity-testing
#16
Edith Aberdam, Isabelle Petit, Linda Sangari, Daniel Aberdam
Induced pluripotent stem cells hold great potential to produce unlimited amount of differentiated cells as cellular source for regenerative medicine but also for in vitro drug screening and cytotoxicity tests. Ocular toxicity testing is mandatory to evaluate the risks of drugs and cosmetic products before their application to human patients by preventing eye irritation or insult. Since the global ban to use animals, many human-derived alternatives have been proposed, from ex-vivo enucleated postmortem cornea, primary corneal cell culture and immortalized corneal epithelial cell lines...
2017: PloS One
https://www.readbyqxmd.com/read/28640850/no-evidence-for-punishment-in-communally-nursing-female-house-mice-mus-musculus-domesticus
#17
Manuela Ferrari, Barbara König
Punishment is claimed as an important mechanism to stabilise costly cooperation in humans, but its importance in social animals has been questioned recently due to both conceptual considerations and a lack of empirical evidence (only few published studies). We empirically tested whether there is evidence for punishment in communally nursing house mice (Mus musculus domesticus, direct descendants of "wild" animals). Communally breeding females pool their litters and raise all offspring together, indiscriminately caring for own and other offspring...
2017: PloS One
https://www.readbyqxmd.com/read/28640848/easy-labeling-of-proliferative-phase-and-sporogonic-phase-of-microsporidia-nosema-bombycis-in-host-cells
#18
Jie Chen, Wei Guo, Xiaoqun Dang, Yukang Huang, Fangyan Liu, Xianzhi Meng, Yaoyao An, Mengxian Long, Jialing Bao, Zeyang Zhou, Zhonghuai Xiang, Guoqing Pan
Microsporidia are eukaryotic, unicellular parasites that have been studied for more than 150 years. These organisms are extraordinary in their ability to invade a wide range of hosts including vertebrates and invertebrates, such as human and commercially important animals. A lack of appropriate labeling methods has limited the research of the cell cycle and protein locations in intracellular stages. In this report, an easy fluorescent labeling method has been developed to mark the proliferative and sporogonic phases of microsporidia Nosema bombycis in host cells...
2017: PloS One
https://www.readbyqxmd.com/read/28640847/heart-rate-lowering-treatment-leads-to-a-reduction-in-vulnerable-plaque-features-in-atherosclerotic-rabbits
#19
Raf H M van Hoof, Evelien Hermeling, Judith C Sluimer, Julie Salzmann, Arnold P G Hoeks, Jérôme Roussel, Mat J A P Daemen, Harry Struijker-Boudier, Joachim E Wildberger, Sylvia Heeneman, M Eline Kooi
OBJECTIVE: To investigate the effect of a heart rate (HR) lowering agent (Ivabradine) on features of atherosclerotic plaque vulnerability with magnetic resonance imaging (MRI), ultrasound imaging, and histology. APPROACH AND RESULTS: Atherosclerosis was induced in the abdominal aorta of 19 rabbits. Nine rabbits were treated with Ivabradine (17 mg/kg/day) during the entire study period. At week 14, imaging was performed. Plaque size was quantified on contrast-enhanced T1-weighted MR images...
2017: PloS One
https://www.readbyqxmd.com/read/28640820/whole-genome-analysis-of-selected-human-and-animal-rotaviruses-identified-in-uganda-from-2012-to-2014-reveals-complex-genome-reassortment-events-between-human-bovine-caprine-and-porcine-strains
#20
Josephine Bwogi, Khuzwayo C Jere, Charles Karamagi, Denis K Byarugaba, Prossy Namuwulya, Frederick N Baliraine, Ulrich Desselberger, Miren Iturriza-Gomara
Rotaviruses of species A (RVA) are a common cause of diarrhoea in children and the young of various other mammals and birds worldwide. To investigate possible interspecies transmission of RVAs, whole genomes of 18 human and 6 domestic animal RVA strains identified in Uganda between 2012 and 2014 were sequenced using the Illumina HiSeq platform. The backbone of the human RVA strains had either a Wa- or a DS-1-like genetic constellation. One human strain was a Wa-like mono-reassortant containing a DS-1-like VP2 gene of possible animal origin...
2017: PloS One
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