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  • Atomic, Molecular, and Optical Physics  (4)
  • Promoter Regions, Genetic  (2)
  • Transcription Factors/metabolism  (2)
  • 1
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    ^{39} Ar Detection at the 10^{-16} Isotopic Abundance Level with Atom Trap Trace Analysis (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-03-10
    Description: Author(s): W. Jiang, W. Williams, K. Bailey, A. M. Davis, S.-M. Hu, Z.-T. Lu, T. P. O’Connor, R. Purtschert, N. C. Sturchio, Y. R. Sun, and P. Mueller Atom trap trace analysis, a laser-based atom counting method, has been applied to analyze atmospheric ^{39} Ar (half-life=269  yr), a cosmogenic isotope with an isotopic abundance of 8×10^{-16} . In addition to the superior selectivity demonstrated in this work, the counting rate and efficiency... [Phys. Rev. Lett. 106, 103001] Published Wed Mar 09, 2011
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    First Measurement of the Atomic Electric Dipole Moment of ^{225}Ra (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-06-11
    Description: Author(s): R. H. Parker, M. R. Dietrich, M. R. Kalita, N. D. Lemke, K. G. Bailey, M. Bishof, J. P. Greene, R. J. Holt, W. Korsch, Z.-T. Lu, P. Mueller, T. P. O’Connor, and J. T. Singh Researchers have devised a new technique to look for evidence of a permanent electric dipole moment in atoms, which would signal new physics. [Phys. Rev. Lett. 114, 233002] Published Tue Jun 09, 2015
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Optical Excitation and Decay Dynamics of Ytterbium Atoms Embedded in a Solid Neon Matrix (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-08-23
    Description: Author(s): C.-Y. Xu (徐晨昱), S.-M. Hu (胡水明), J. Singh, K. Bailey, Z.-T. Lu (卢征天), P. Mueller, T. P. O’Connor, and U. Welp Neutral ytterbium atoms embedded in solid neon qualitatively retain the structure of free atoms. Despite the atom-solid interaction, the 6 s 6 p 3 P 0 level is found to remain metastable with its lifetimes determined to be in the range of ten to hundreds of seconds. The atomic population can be almost co... [Phys. Rev. Lett. 107, 093001] Published Mon Aug 22, 2011
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Measurement of the Hyperfine Quenching Rate of the Clock Transition in Yb171 (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-07-19
    Description: Author(s): C.-Y. Xu (徐晨昱), J. Singh, J. C. Zappala, K. G. Bailey, M. R. Dietrich, J. P. Greene, W. Jiang (蒋蔚), N. D. Lemke, Z.-T. Lu (卢征天), P. Mueller, and T. P. O’Connor We report the first experimental determination of the hyperfine quenching rate of the 6s2 S01(F=1/2)−6s6p P03(F=1/2) transition in Yb171 with nuclear spin I=1/2. This rate determines the natural linewidth and the Rabi frequency of the clock transition of a Yb optical frequency standard. Our techniqu... [Phys. Rev. Lett. 113, 033003] Published Fri Jul 18, 2014
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 5
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    Vitamin D receptor as an intestinal bile acid sensor (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-23
    Description: The vitamin D receptor (VDR) mediates the effects of the calcemic hormone 1alpha,25-dihydroxyvitamin D3 [1,25(OH)2D3]. We show that VDR also functions as a receptor for the secondary bile acid lithocholic acid (LCA), which is hepatotoxic and a potential enteric carcinogen. VDR is an order of magnitude more sensitive to LCA and its metabolites than are other nuclear receptors. Activation of VDR by LCA or vitamin D induced expression in vivo of CYP3A, a cytochrome P450 enzyme that detoxifies LCA in the liver and intestine. These studies offer a mechanism that may explain the proposed protective effects of vitamin D and its receptor against colon cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Makishima, Makoto -- Lu, Timothy T -- Xie, Wen -- Whitfield, G Kerr -- Domoto, Hideharu -- Evans, Ronald M -- Haussler, Mark R -- Mangelsdorf, David J -- New York, N.Y. -- Science. 2002 May 17;296(5571):1313-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Pharmacology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9050, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016314" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Aryl Hydrocarbon Hydroxylases ; Binding, Competitive ; COS Cells ; Cell Line ; Colonic Neoplasms/prevention & control ; Cytochrome P-450 CYP3A ; Cytochrome P-450 Enzyme System/genetics/metabolism ; DNA-Binding Proteins/metabolism ; Dimerization ; Gene Expression Regulation, Enzymologic ; Histone Acetyltransferases ; Humans ; Intestine, Small/*metabolism ; Ligands ; Lithocholic Acid/analogs & derivatives/*metabolism/pharmacology ; Male ; Mice ; Nuclear Receptor Coactivator 1 ; Oxidoreductases, N-Demethylating/genetics/metabolism ; Promoter Regions, Genetic ; Rats ; Receptors, Calcitriol/agonists/genetics/*metabolism ; Receptors, Cytoplasmic and Nuclear/metabolism ; Receptors, Steroid/metabolism ; Transcription Factors/metabolism ; Transfection
    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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  • 6
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    REST and stress resistance in ageing and Alzheimer's disease (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-03-29
    Description: Human neurons are functional over an entire lifetime, yet the mechanisms that preserve function and protect against neurodegeneration during ageing are unknown. Here we show that induction of the repressor element 1-silencing transcription factor (REST; also known as neuron-restrictive silencer factor, NRSF) is a universal feature of normal ageing in human cortical and hippocampal neurons. REST is lost, however, in mild cognitive impairment and Alzheimer's disease. Chromatin immunoprecipitation with deep sequencing and expression analysis show that REST represses genes that promote cell death and Alzheimer's disease pathology, and induces the expression of stress response genes. Moreover, REST potently protects neurons from oxidative stress and amyloid beta-protein toxicity, and conditional deletion of REST in the mouse brain leads to age-related neurodegeneration. A functional orthologue of REST, Caenorhabditis elegans SPR-4, also protects against oxidative stress and amyloid beta-protein toxicity. During normal ageing, REST is induced in part by cell non-autonomous Wnt signalling. However, in Alzheimer's disease, frontotemporal dementia and dementia with Lewy bodies, REST is lost from the nucleus and appears in autophagosomes together with pathological misfolded proteins. Finally, REST levels during ageing are closely correlated with cognitive preservation and longevity. Thus, the activation state of REST may distinguish neuroprotection from neurodegeneration in the ageing brain.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4110979/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4110979/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Tao -- Aron, Liviu -- Zullo, Joseph -- Pan, Ying -- Kim, Haeyoung -- Chen, Yiwen -- Yang, Tun-Hsiang -- Kim, Hyun-Min -- Drake, Derek -- Liu, X Shirley -- Bennett, David A -- Colaiacovo, Monica P -- Yankner, Bruce A -- DP1 AG044161/AG/NIA NIH HHS/ -- DP1 OD006849/OD/NIH HHS/ -- DP1OD006849/OD/NIH HHS/ -- P01 AG027916/AG/NIA NIH HHS/ -- P01AG27916/AG/NIA NIH HHS/ -- P30 AG010161/AG/NIA NIH HHS/ -- P30AG10161/AG/NIA NIH HHS/ -- R01 AG015819/AG/NIA NIH HHS/ -- R01 AG017917/AG/NIA NIH HHS/ -- R01 AG026651/AG/NIA NIH HHS/ -- R01 GM105853/GM/NIGMS NIH HHS/ -- R01AG15819/AG/NIA NIH HHS/ -- R01AG17917/AG/NIA NIH HHS/ -- R01AG26651/AG/NIA NIH HHS/ -- R01GM072551/GM/NIGMS NIH HHS/ -- T32 AG000222/AG/NIA NIH HHS/ -- England -- Nature. 2014 Mar 27;507(7493):448-54. doi: 10.1038/nature13163. Epub 2014 Mar 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Department of Biostatistics and Computational Biology, Dana-Faber Cancer Institute and Harvard School of Public Health, Boston, Massachusetts 02115, USA. ; Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, Illinois 60612, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24670762" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aged, 80 and over ; Aging/genetics/*metabolism/pathology ; Alzheimer Disease/genetics/*metabolism/pathology ; Amyloid beta-Peptides/antagonists & inhibitors/toxicity ; Animals ; Autophagy ; Brain/cytology/metabolism/pathology ; Caenorhabditis elegans Proteins/metabolism ; Cell Death/genetics ; Cell Nucleus/metabolism ; Chromatin Immunoprecipitation ; Cognition ; DNA-Binding Proteins/metabolism ; Down-Regulation ; Frontotemporal Dementia/metabolism/pathology ; Gene Expression Regulation ; Humans ; Lewy Body Disease/metabolism/pathology ; Longevity ; Mice ; Mild Cognitive Impairment/metabolism ; Neurons/cytology/metabolism/pathology ; Neuroprotective Agents/metabolism ; *Oxidative Stress/genetics/physiology ; Phagosomes ; Repressor Proteins/deficiency/genetics/*metabolism ; Transcription Factors/metabolism ; Up-Regulation ; Wnt Signaling Pathway ; Young Adult
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 7
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    The DNA damage response induces inflammation and senescence by inhibiting autophagy of GATA4 (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-09-26
    Description: Cellular senescence is a terminal stress-activated program controlled by the p53 and p16(INK4a) tumor suppressor proteins. A striking feature of senescence is the senescence-associated secretory phenotype (SASP), a pro-inflammatory response linked to tumor promotion and aging. We have identified the transcription factor GATA4 as a senescence and SASP regulator. GATA4 is stabilized in cells undergoing senescence and is required for the SASP. Normally, GATA4 is degraded by p62-mediated selective autophagy, but this regulation is suppressed during senescence, thereby stabilizing GATA4. GATA4 in turn activates the transcription factor NF-kappaB to initiate the SASP and facilitate senescence. GATA4 activation depends on the DNA damage response regulators ATM and ATR, but not on p53 or p16(INK4a). GATA4 accumulates in multiple tissues, including the aging brain, and could contribute to aging and its associated inflammation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kang, Chanhee -- Xu, Qikai -- Martin, Timothy D -- Li, Mamie Z -- Demaria, Marco -- Aron, Liviu -- Lu, Tao -- Yankner, Bruce A -- Campisi, Judith -- Elledge, Stephen J -- AG009909/AG/NIA NIH HHS/ -- AG017242/AG/NIA NIH HHS/ -- AG046174/AG/NIA NIH HHS/ -- DP1 OD006849/OD/NIH HHS/ -- DP1OD006849/OD/NIH HHS/ -- GM44664/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Sep 25;349(6255):aaa5612. doi: 10.1126/science.aaa5612.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Division of Genetics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA. ; Buck Institute for Research on Aging, Novato, CA 94945, USA. ; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. ; Department of Genetics, Harvard Medical School, Division of Genetics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Boston, MA 02115, USA. selledge@genetics.med.harvard.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26404840" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/*genetics/metabolism ; Animals ; Ataxia Telangiectasia Mutated Proteins/metabolism ; Autophagy/*genetics ; Brain/metabolism ; Cell Aging/*genetics ; Cell Cycle/genetics ; Cells, Cultured ; Cyclin-Dependent Kinase Inhibitor p16 ; *DNA Damage ; Fibroblasts ; GATA4 Transcription Factor/genetics/*metabolism ; Gene Expression Profiling ; Humans ; Inflammation/*genetics ; Interleukin-1alpha/genetics/metabolism ; Mice ; Mice, Inbred C57BL ; MicroRNAs/genetics/metabolism ; NF-kappa B/metabolism ; Phenotype ; Promoter Regions, Genetic ; Tumor Necrosis Factor Receptor-Associated Peptides and ; Proteins/genetics/metabolism ; Tumor Suppressor Protein p53/metabolism
    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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