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  • Springer Nature  (46)
  • American Association for the Advancement of Science (AAAS)  (13)
  • 2000-2004  (59)
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  • 1
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    Haplotypes of the cholesteryl ester transfer protein gene predict lipid-modifying response to statin therapy (2003)
    Springer Nature
    Details
    Publication Date: 2003-10-01
    Print ISSN: 1470-269X
    Electronic ISSN: 1473-1150
    Topics: Chemistry and Pharmacology
    Published by Springer Nature
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  • 2
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    Low potential for climatic stress adaptation in a rainforest Drosophila species (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-07-05
    Description: The ability of sensitive rainforest species to evolve in response to climate change is largely unknown. We show that the Australian tropical rainforest fly Drosophila birchii exhibits clinal variation in desiccation resistance, but the most resistant population lacks the ability to evolve further resistance even after intense selection for over 30 generations. Parent-offspring comparisons indicate low heritable variation for this trait but high levels of genetic variation for morphology. D. birchii also exhibits abundant genetic variation at microsatellite loci. The low potential for resistance evolution highlights the importance of assessing evolutionary potential in targeted ecological traits and species from threatened habitats.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffmann, A A -- Hallas, R J -- Dean, J A -- Schiffer, M -- New York, N.Y. -- Science. 2003 Jul 4;301(5629):100-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Environmental Stress and Adaptation Research, La Trobe University, Bundoora, Victoria 3086, Australia. A.Hoffmann@latrobe.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12843394" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological ; Animals ; Australia ; *Biological Evolution ; *Climate ; Crosses, Genetic ; Dehydration ; Drosophila/*genetics/*physiology ; Ecosystem ; Environment ; Female ; *Genetic Variation ; Geography ; Inbreeding ; Male ; Microsatellite Repeats ; Selection, Genetic ; Trees
    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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  • 3
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    Climate. Taking the pulse of the tropical water cycle (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-08-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffmann, Georg -- New York, N.Y. -- Science. 2003 Aug 8;301(5634):776-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire des Sciences du Climat et de l'Environnement (LSCE), 91191 Gif-sur-Yvette, France. hoffmann@lsce.saclay.cea.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12907784" target="_blank"〉PubMed〈/a〉
    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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  • 4
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    Quantitative measurement of short-range chemical bonding forces (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-03
    Description: We report direct force measurements of the formation of a chemical bond. The experiments were performed using a low-temperature atomic force microscope, a silicon tip, and a silicon (111) 7x7 surface. The measured site-dependent attractive short-range force, which attains a maximum value of 2.1 nanonewtons, is in good agreement with first-principles calculations of an incipient covalent bond in an analogous model system. The resolution was sufficient to distinguish differences in the interaction potential between inequivalent adatoms, demonstrating the ability of atomic force microscopy to provide quantitative, atomic-scale information on surface chemical reactivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lantz, M A -- Hug, H J -- Hoffmann, R -- van Schendel, P J -- Kappenberger, P -- Martin, S -- Baratoff, A -- Guntherodt, H J -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2580-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland. mark.lantz@unibas.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283365" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Persistent solar influence on North Atlantic climate during the Holocene (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: Surface winds and surface ocean hydrography in the subpolar North Atlantic appear to have been influenced by variations in solar output through the entire Holocene. The evidence comes from a close correlation between inferred changes in production rates of the cosmogenic nuclides carbon-14 and beryllium-10 and centennial to millennial time scale changes in proxies of drift ice measured in deep-sea sediment cores. A solar forcing mechanism therefore may underlie at least the Holocene segment of the North Atlantic's "1500-year" cycle. The surface hydrographic changes may have affected production of North Atlantic Deep Water, potentially providing an additional mechanism for amplifying the solar signals and transmitting them globally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bond, G -- Kromer, B -- Beer, J -- Muscheler, R -- Evans, M N -- Showers, W -- Hoffmann, S -- Lotti-Bond, R -- Hajdas, I -- Bonani, G -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2130-6. Epub 2001 Nov 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lamont-Doherty Earth Observatory of Columbia University, Route 9W, Palisades, NY 10964, USA. gcb@ldeo.columbia.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11739949" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Subatomic features in atomic force microscopy images (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hug, H J -- Lantz, M A -- Abdurixit, A -- van Schendel, P J -- Hoffmann, R -- Kappenberger, P -- Baratoff, A -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2509.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland. hans-josef.hug@unibas.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283360" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Neural mechanisms of saccadic suppression (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-30
    Description: In normal vision our gaze leaps from detail to detail, resulting in rapid image motion across the retina. Yet we are unaware of such motion, a phenomenon known as saccadic suppression. We recorded neural activity in the middle temporal and middle superior temporal cortical areas during saccades and identical image motion under passive viewing conditions. Some neurons were selectively silenced during saccadic image motion, but responded well to identical external image motion. In addition, a subpopulation of neurons reversed their preferred direction of motion during saccades. Consequently, oppositely directed motion signals annul one another, and motion percepts are suppressed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thiele, A -- Henning, P -- Kubischik, M -- Hoffmann, K-P -- New York, N.Y. -- Science. 2002 Mar 29;295(5564):2460-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Allgemeine Zoologie und Neurobiologie, Ruhr-University Bochum, Bochum, 44780, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11923539" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Macaca mulatta ; Motion Perception ; Neurons/*physiology ; *Perceptual Masking ; Retina/physiology ; Saccades/*physiology ; Temporal Lobe/*physiology ; Visual Pathways ; *Visual Perception
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Activation of Drosophila Toll during fungal infection by a blood serine protease (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-06
    Description: Drosophila host defense to fungal and Gram-positive bacterial infection is mediated by the Spaetzle/Toll/cactus gene cassette. It has been proposed that Toll does not function as a pattern recognition receptor per se but is activated through a cleaved form of the cytokine Spaetzle. The upstream events linking infection to the cleavage of Spaetzle have long remained elusive. Here we report the identification of a central component of the fungal activation of Toll. We show that ethylmethane sulfonate-induced mutations in the persephone gene, which encodes a previously unknown serine protease, block induction of the Toll pathway by fungi and resistance to this type of infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ligoxygakis, Petros -- Pelte, Nadege -- Hoffmann, Jules A -- Reichhart, Jean-Marc -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):114-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Biologie Moleculaire et Cellulaire, UPR 9022 du CNRS, 15 rue R. Descartes, F67084 Strasbourg Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12098703" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Chromosome Mapping ; Drosophila/genetics/immunology/*metabolism/*microbiology ; Drosophila Proteins/*blood/chemistry/*genetics/*metabolism ; Escherichia coli/physiology ; Female ; Gene Expression Regulation ; Genes, Insect ; Gram-Positive Cocci/physiology ; Hemolymph/immunology/metabolism ; Hypocreales/*physiology ; Insect Proteins/genetics/metabolism ; Male ; Molecular Sequence Data ; Mutation ; Protein Sorting Signals ; Protein Structure, Tertiary ; Receptors, Cell Surface/genetics/*metabolism ; Serine Endopeptidases/*blood/chemistry/*genetics ; Toll-Like Receptors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    A kinetic framework for a mammalian RNA polymerase in vivo (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-11-26
    Description: We have analyzed the kinetics of assembly and elongation of the mammalian RNA polymerase I complex on endogenous ribosomal genes in the nuclei of living cells with the use of in vivo microscopy. We show that components of the RNA polymerase I machinery are brought to ribosomal genes as distinct subunits and that assembly occurs via metastable intermediates. With the use of computational modeling of imaging data, we have determined the in vivo elongation time of the polymerase, and measurements of recruitment and incorporation frequencies show that incorporation of components into the assembling polymerase is inefficient. Our data provide a kinetic and mechanistic framework for the function of a mammalian RNA polymerase in living cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dundr, Miroslav -- Hoffmann-Rohrer, Urs -- Hu, Qiyue -- Grummt, Ingrid -- Rothblum, Lawrence I -- Phair, Robert D -- Misteli, Tom -- New York, N.Y. -- Science. 2002 Nov 22;298(5598):1623-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12446911" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Catalytic Domain ; Cell Line ; Cell Nucleolus/metabolism ; Cell Nucleus/*metabolism ; Computer Simulation ; DNA, Ribosomal/genetics ; Fluorescence ; Fluorescence Recovery After Photobleaching ; Fluorescent Dyes ; Green Fluorescent Proteins ; Haplorhini ; Humans ; In Situ Hybridization, Fluorescence ; Kinetics ; Least-Squares Analysis ; Luminescent Proteins ; Microscopy ; Pol1 Transcription Initiation Complex Proteins/metabolism ; Probability ; Promoter Regions, Genetic ; Protein Subunits ; RNA Polymerase I/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Helicobacter pylori vacuolating cytotoxin inhibits T lymphocyte activation (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-08-23
    Description: Helicobacter pylori (Hp) vacuolating cytotoxin VacA induces cellular vacuolation in epithelial cells. We found that VacA could efficiently block proliferation of T cells by inducing a G1/S cell cycle arrest. It interfered with the T cell receptor/interleukin-2 (IL-2) signaling pathway at the level of the Ca2+-calmodulin-dependent phosphatase calcineurin. Nuclear translocation of nuclear factor of activated T cells (NFAT), a transcription factor acting as a global regulator of immune response genes, was abrogated, resulting in down-regulation of IL-2 transcription. VacA partially mimicked the activity of the immunosuppressive drug FK506 by possibly inducing a local immune suppression, explaining the extraordinary chronicity of Hp infections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gebert, Bettina -- Fischer, Wolfgang -- Weiss, Evelyn -- Hoffmann, Reinhard -- Haas, Rainer -- New York, N.Y. -- Science. 2003 Aug 22;301(5636):1099-102.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max von Pettenkofer-Institut fur Hygiene und Medizinische Mikrobiologie, LMU Munchen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12934009" target="_blank"〉PubMed〈/a〉
    Keywords: Apoptosis ; Bacterial Proteins/pharmacology/*physiology ; Bacterial Toxins/pharmacology ; Calcineurin/metabolism ; Calcineurin Inhibitors ; Cyclins/metabolism ; Cytotoxins/pharmacology ; DNA-Binding Proteins/genetics/metabolism ; G1 Phase ; Gene Expression Regulation ; HeLa Cells ; Helicobacter pylori/genetics/*pathogenicity ; Humans ; Interleukin-2/genetics/metabolism ; Jurkat Cells ; *Lymphocyte Activation ; NFATC Transcription Factors ; *Nuclear Proteins ; Oligonucleotide Array Sequence Analysis ; S Phase ; Signal Transduction ; T-Lymphocytes/*immunology/*microbiology/physiology ; Tacrolimus/pharmacology ; Transcription Factors/genetics/metabolism ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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