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  • 1
    Electronic Resource
    Electronic Resource
    Effect of EDTA on fibrinogen
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 127 (1966), S. 560-562 
    Details
    ISSN: 0304-4165
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-4165(66)90418-1
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    An electrical analogy to the gel filtration process
    Amsterdam : Elsevier
    Journal of Chromatography A 16 (1964), S. 89-98 
    Details
    ISSN: 0021-9673
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0021-9673(01)82442-0
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    Paper (German National Licenses)
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  • 3
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    Preliminary results of a new antibiotic susceptibility test against biofilm installation in device-associated infections: the Antibiofilmogram(R) (2016)
    Oxford University Press
    Details
    Publication Date: 2016-07-13
    Description: Biofilms are complex communities of microorganisms embedded in an extracellular matrix and adherent to a surface. The development was described as a four-stage process leading to the formation of a mature biofilm which was resistant to immune system and antibiotic actions. In bone and joint infections (BJIs), the formation of biofilms is a leading cause of treatment failure. Here we study the capacity of 11 antibiotics commonly used in the treatment of BJIs to inhibit the biofilm formation on 29 clinical Staphylococcus aureus isolates by a new test called Antibiofilmogram ® . The minimal inhibitory concentration (MIC) and biofilm MIC (bMIC) were determined in vitro and showed similar values for clindamycin, fusidic acid, linezolid and rifampin. Reversely, daptomycin, fosfomycin, gentamicin and ofloxacin showed a bMIC distribution different from MIC with bMIC above breakpoint. Finally, cloxacillin, teicoplanin and vancomycin revealed an intermediate bMIC distribution with a strain-dependent pattern. A murine in vivo model of catheter-associated S. aureus infection was made and showed a significant reduction, but not total prevention, of catheter colonization with cloxacillin at bMIC, and no or limited reduction with cloxacillin at MIC. Antibiofilmogram ® could be of great interest after surgical operations on contaminated prostheses and after bacteremia in order to prevent the colonization of the device.
    Print ISSN: 0928-8244
    Topics: Biology , Medicine
    Published by Oxford University Press
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  • 4
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    Negative differential mobility for negative carriers as revealed by space charge measurements on crosslinked polyethylene insulated model cables (2015)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2015-12-22
    Description: Among features observed in polyethylene materials under relatively high field, space charge packets, consisting in a pulse of net charge that remains in the form of a pulse as it crosses the insulation, are repeatedly observed but without complete theory explaining their formation and propagation. Positive charge packets are more often reported, and the models based on negative differential mobility(NDM) for the transport of holes could account for some charge packets phenomenology. Conversely, NDM for electrons transport has never been reported so far. The present contribution reports space charge measurements by pulsed electroacoustic method on miniature cables that are model of HVDC cables. The measurements were realized at room temperature or with a temperature gradient of 10 °C through the insulation under DC fields on the order 30–60 kV/mm. Space charge results reveal systematic occurrence of a negative front of charges generated at the inner electrode that moves toward the outer electrode at the beginning of the polarization step. It is observed that the transit time of the front of negative charge increases, and therefore the mobility decreases, with the applied voltage. Further, the estimated mobility, in the range 10 −14 –10 −13  m 2  V −1  s −1 for the present results, increases when the temperature increases for the same condition of applied voltage. The features substantiate the hypothesis of negative differential mobility used for modelling space charge packets.
    Print ISSN: 0003-6951
    Electronic ISSN: 1077-3118
    Topics: Physics
    Published by American Institute of Physics (AIP)
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  • 5
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    Establishment of human iPSC-based models for the study and targeting of glioma initiating cells (2016)
    Springer Nature
    Details
    Publication Date: 2016-02-24
    Description: Article Glioma can originate from the transformation of neural progenitor cells into glioma initiating cells. Here, the authors demonstrate the use of induced pluripotent stem cells as a suitable model for generating neural progenitor cells, which can be subsequently transformed to glioma initiating cells that are able to the generate human glioma-like tumours in mice. Nature Communications doi: 10.1038/ncomms10743 Authors: Ignacio Sancho-Martinez, Emmanuel Nivet, Yun Xia, Tomoaki Hishida, Aitor Aguirre, Alejandro Ocampo, Li Ma, Robert Morey, Marie N. Krause, Andreas Zembrzycki, Olaf Ansorge, Eric Vazquez-Ferrer, Ilir Dubova, Pradeep Reddy, David Lam, Yuriko Hishida, Min-Zu Wu, Concepcion Rodriguez Esteban, Dennis O’Leary, Geoffrey M. Wahl, Inder M. Verma, Louise C. Laurent, Juan Carlos Izpisua Belmonte
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 6
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    Regulation of RAS oncogenicity by acetylation [Biochemistry] (2012)
    National Academy of Sciences
    Details
    Publication Date: 2012-07-04
    Description: Members of the RAS small GTPase family regulate cellular responses to extracellular stimuli by mediating the flux through downstream signal transduction cascades. RAS activity is strongly dependent on its subcellular localization and its nucleotide-binding status, both of which are modulated by posttranslational modification. We have determined that RAS is posttranslationally acetylated on lysine 104. Molecular dynamics simulations suggested that this modification affects the conformational stability of the Switch II domain, which is critical for the ability of RAS to interact with guanine nucleotide exchange factors. Consistent with this model, an acetylation-mimetic mutation in K-RAS4B suppressed guanine nucleotide exchange factor-induced nucleotide exchange and inhibited in vitro transforming activity. These data suggest that lysine acetylation is a negative regulatory modification on RAS. Because mutations in RAS family members are extremely common in cancer, modulation of RAS acetylation may constitute a therapeutic approach.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    Efficient barrier for charge injection in polyethylene by silver nanoparticles/plasma polymer stack (2014)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2014-09-27
    Description: Charge injection from a metal/insulator contact is a process promoting the formation of space charge in polymeric insulation largely used in thick layers in high voltage equipment. The internal charge perturbs the field distribution and can lead to catastrophic failure either through its electrostatic effects or through energetic processes initiated under charge recombination and/or hot electrons effects. Injection is still ill-described in polymeric insulation due to the complexity of the contact between the polymer chains and the electrodes. Barrier heights derived from the metal work function and the polymer electronic affinity do not provide a good description of the measurements [Taleb et al ., IEEE Trans. Dielectr. Electr. Insul. 20 , 311–320 (2013)]. Considering the difficulty to describe the contact properties and the need to prevent charge injection in polymers for high voltage applications, we developed an alternative approach by tailoring the interface properties by the silver nanoparticles (AgNPs)/plasma polymer stack, deposited on the polymer film. Due to their small size, the AgNPs, covered by a very thin film of plasma polymer, act as deep traps for the injected charges thereby stabilizing the interface from the point of view of charge injection. After a quick description of the method for elaborating the nanostructured layer near the contact, it is demonstrated how the AgNPs/plasma polymer stack effectively prevents, in a spectacular way, the formation of bulk space charge.
    Print ISSN: 0003-6951
    Electronic ISSN: 1077-3118
    Topics: Physics
    Published by American Institute of Physics (AIP)
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  • 8
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    Role of astroglia in Down’s syndrome revealed by patient-derived human-induced pluripotent stem cells (2014)
    Springer Nature
    Details
    Publication Date: 2014-07-20
    Description: Article Down’s syndrome is characterized by intellectual disability and other neuropathological symptoms. Here, the authors show that astroglia derived from induced pluripotent stem cells from Down’s syndrome patients impair the development of neurons, and that this can be attenuated with the drug minocycline. Nature Communications doi: 10.1038/ncomms5430 Authors: Chen Chen, Peng Jiang, Haipeng Xue, Suzanne E. Peterson, Ha T. Tran, Anna E. McCann, Mana M. Parast, Shenglan Li, David E. Pleasure, Louise C. Laurent, Jeanne F. Loring, Ying Liu, Wenbin Deng
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 9
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    No major schizophrenia locus detected on chromosome 1q in a large multicenter sample (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-27
    Description: Reports of substantial evidence for genetic linkage of schizophrenia to chromosome 1q were evaluated by genotyping 16 DNA markers across 107 centimorgans of this chromosome in a multicenter sample of 779 informative schizophrenia pedigrees. No significant evidence was observed for such linkage, nor for heterogeneity in allele sharing among the eight individual samples. Separate analyses of European-origin families, recessive models of inheritance, and families with larger numbers of affected cases also failed to produce significant evidence for linkage. If schizophrenia susceptibility genes are present on chromosome 1q, their population-wide genetic effects are likely to be small.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levinson, Douglas F -- Holmans, Peter A -- Laurent, Claudine -- Riley, Brien -- Pulver, Ann E -- Gejman, Pablo V -- Schwab, Sibylle G -- Williams, Nigel M -- Owen, Michael J -- Wildenauer, Dieter B -- Sanders, Alan R -- Nestadt, Gerald -- Mowry, Bryan J -- Wormley, Brandon -- Bauche, Stephanie -- Soubigou, Stephane -- Ribble, Robert -- Nertney, Deborah A -- Liang, Kung Yee -- Martinolich, Laura -- Maier, Wolfgang -- Norton, Nadine -- Williams, Hywel -- Albus, Margot -- Carpenter, Eric B -- DeMarchi, Nicola -- Ewen-White, Kelly R -- Walsh, Dermot -- Jay, Maurice -- Deleuze, Jean-Francois -- O'Neill, F Anthony -- Papadimitriou, George -- Weilbaecher, Ann -- Lerer, Bernard -- O'Donovan, Michael C -- Dikeos, Dimitris -- Silverman, Jeremy M -- Kendler, Kenneth S -- Mallet, Jacques -- Crowe, Raymond R -- Walters, Marilyn -- G9309834/Medical Research Council/United Kingdom -- G9810900/Medical Research Council/United Kingdom -- K24-MH64197/MH/NIMH NIH HHS/ -- KO2-01207/PHS HHS/ -- MH 41953/MH/NIMH NIH HHS/ -- MH 45390/MH/NIMH NIH HHS/ -- MH 52537/MH/NIMH NIH HHS/ -- MH61602/MH/NIMH NIH HHS/ -- R01-MH57314/MH/NIMH NIH HHS/ -- U01 MH46289/MH/NIMH NIH HHS/ -- U01 MH46318/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2002 Apr 26;296(5568):739-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104, USA. dfl@mail.med.upenn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11976456" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Alleles ; Australia ; Canada ; Chromosomes, Human, Pair 1/*genetics ; Europe ; Female ; Genes, Recessive ; *Genetic Linkage ; *Genetic Predisposition to Disease ; Genotype ; Humans ; Lod Score ; Male ; Microsatellite Repeats ; Pedigree ; Schizophrenia/ethnology/*genetics ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Attenuation of virulence by disruption of the Mycobacterium tuberculosis erp gene (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: The virulence of the mycobacteria that cause tuberculosis depends on their ability to multiply in mammalian hosts. Disruption of the bacterial erp gene, which encodes the exported repetitive protein, impaired multiplication of M. tuberculosis and M. bovis Bacille Calmette-Guerin in cultured macrophages and mice. Reintroduction of erp into the mutants restored their ability to multiply. These results indicate that erp contributes to the virulence of M. tuberculosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berthet, F X -- Lagranderie, M -- Gounon, P -- Laurent-Winter, C -- Ensergueix, D -- Chavarot, P -- Thouron, F -- Maranghi, E -- Pelicic, V -- Portnoi, D -- Marchal, G -- Gicquel, B -- AI 35207/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):759-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite de Genetique Mycobacterienne, Institut Pasteur, 25 rue du Docteur Roux, 75724 Paris Cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784137" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BCG Vaccine ; Bacterial Proteins/analysis/genetics/*physiology ; Cell Line ; Genes, Bacterial ; Genetic Complementation Test ; Immunohistochemistry ; Lung/microbiology ; Macrophages/microbiology ; Membrane Proteins/analysis/genetics/*physiology ; Mice ; Mice, Inbred BALB C ; Mutation ; Mycobacterium bovis/genetics/growth & development ; Mycobacterium tuberculosis/genetics/growth & ; development/metabolism/*pathogenicity ; Phagosomes/microbiology ; Recombinant Fusion Proteins ; Tuberculosis/microbiology ; Vaccines, Attenuated ; Virulence/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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