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  • Extraterrestrial Environment  (2)
  • Mice  (2)
  • Earth Resources and Remote Sensing
  • Electronics and Electrical Engineering
  • Solar Physics
  • American Association for the Advancement of Science (AAAS)  (4)
  • 2015-2019
  • 2000-2004  (4)
  • 2004  (4)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (4)
Years
  • 2015-2019
  • 2000-2004  (4)
Year
  • 1
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    What can progeroid syndromes tell us about human aging? (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-09
    Description: Human genetic diseases that resemble accelerated aging provide useful models for gerontologists. They combine known single-gene mutations with deficits in selected tissues that are reminiscent of changes seen during normal aging. Here, we describe recent progress toward linking molecular and cellular changes with the phenotype seen in two of these disorders. One in particular, Werner syndrome, provides evidence to support the hypothesis that the senescence of somatic cells may be a causal agent of normal aging.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kipling, David -- Davis, Terence -- Ostler, Elizabeth L -- Faragher, Richard G A -- New York, N.Y. -- Science. 2004 Sep 3;305(5689):1426-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15353794" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cell Aging ; Cell Division ; DNA Helicases/genetics/physiology ; Exodeoxyribonucleases ; Female ; Gene Expression ; Humans ; Male ; Mice ; Models, Animal ; Mutation ; Phenotype ; RecQ Helicases ; Telomere/metabolism ; *Werner Syndrome/genetics/pathology/physiopathology
    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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  • 2
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    Localization and physical properties experiments conducted by Spirit at Gusev Crater (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: The precise location and relative elevation of Spirit during its traverses from the Columbia Memorial station to Bonneville crater were determined with bundle-adjusted retrievals from rover wheel turns, suspension and tilt angles, and overlapping images. Physical properties experiments show a decrease of 0.2% per Mars solar day in solar cell output resulting from deposition of airborne dust, cohesive soil-like deposits in plains and hollows, bright and dark rock coatings, and relatively weak volcanic rocks of basaltic composition. Volcanic, impact, aeolian, and water-related processes produced the encountered landforms and materials.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arvidson, R E -- Anderson, R C -- Bartlett, P -- Bell, J F 3rd -- Blaney, D -- Christensen, P R -- Chu, P -- Crumpler, L -- Davis, K -- Ehlmann, B L -- Fergason, R -- Golombek, M P -- Gorevan, S -- Grant, J A -- Greeley, R -- Guinness, E A -- Haldemann, A F C -- Herkenhoff, K -- Johnson, J -- Landis, G -- Li, R -- Lindemann, R -- McSween, H -- Ming, D W -- Myrick, T -- Richter, L -- Seelos, F P 4th -- Squyres, S W -- Sullivan, R J -- Wang, A -- Wilson, J -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):821-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297662" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; Geologic Sediments ; *Mars ; Volcanic Eruptions ; Water ; Wind
    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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    Niemann-Pick C1 Like 1 protein is critical for intestinal cholesterol absorption (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-21
    Description: Dietary cholesterol consumption and intestinal cholesterol absorption contribute to plasma cholesterol levels, a risk factor for coronary heart disease. The molecular mechanism of sterol uptake from the lumen of the small intestine is poorly defined. We show that Niemann-Pick C1 Like 1(NPC1L1) protein plays a critical role in the absorption of intestinal cholesterol. NPC1L1 expression is enriched in the small intestine and is in the brush border membrane of enterocytes. Although otherwise phenotypically normal, NPC1L1-deficient mice exhibit a substantial reduction in absorbed cholesterol, which is unaffected by dietary supplementation of bile acids. Ezetimibe, a drug that inhibits cholesterol absorption, had no effect in NPC1L1 knockout mice, suggesting that NPC1L1 resides in an ezetimibe-sensitive pathway responsible for intestinal cholesterol absorption.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Altmann, Scott W -- Davis, Harry R Jr -- Zhu, Li-Ji -- Yao, Xiaorui -- Hoos, Lizbeth M -- Tetzloff, Glen -- Iyer, Sai Prasad N -- Maguire, Maureen -- Golovko, Andrei -- Zeng, Ming -- Wang, Luquan -- Murgolo, Nicholas -- Graziano, Michael P -- New York, N.Y. -- Science. 2004 Feb 20;303(5661):1201-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cardiovascular/Endocrine Research, Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, NJ, 07033-0539, USA. scott.altmann@spcorp.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14976318" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anticholesteremic Agents/pharmacology ; Azetidines/pharmacology ; Cholesterol/*metabolism ; Cholesterol, Dietary/*metabolism ; Cholic Acid/administration & dosage/pharmacology ; Computational Biology ; Enterocytes/*metabolism ; Ezetimibe ; Female ; Gene Expression Profiling ; Humans ; *Intestinal Absorption/drug effects ; Intestine, Small/metabolism ; Jejunum/metabolism ; Liver/metabolism ; Male ; Membrane Proteins/chemistry/genetics/*metabolism ; Membrane Transport Proteins/chemistry/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Molecular Sequence Data ; Oligonucleotide Array Sequence Analysis ; Proteins/chemistry/genetics/*metabolism ; Rats ; Rats, Sprague-Dawley
    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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    Localization and physical property experiments conducted by Opportunity at Meridiani Planum (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-04
    Description: The location of the Opportunity landing site was determined to better than 10-m absolute accuracy from analyses of radio tracking data. We determined Rover locations during traverses with an error as small as several centimeters using engineering telemetry and overlapping images. Topographic profiles generated from rover data show that the plains are very smooth from meter- to centimeter-length scales, consistent with analyses of orbital observations. Solar cell output decreased because of the deposition of airborne dust on the panels. The lack of dust-covered surfaces on Meridiani Planum indicates that high velocity winds must remove this material on a continuing basis. The low mechanical strength of the evaporitic rocks as determined from grinding experiments, and the abundance of coarse-grained surface particles argue for differential erosion of Meridiani Planum.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arvidson, R E -- Anderson, R C -- Bartlett, P -- Bell, J F 3rd -- Christensen, P R -- Chu, P -- Davis, K -- Ehlmann, B L -- Golombek, M P -- Gorevan, S -- Guinness, E A -- Haldemann, A F C -- Herkenhoff, K E -- Landis, G -- Li, R -- Lindemann, R -- Ming, D W -- Myrick, T -- Parker, T -- Richter, L -- Seelos, F P 4th -- Soderblom, L A -- Squyres, S W -- Sullivan, R J -- Wilson, J -- New York, N.Y. -- Science. 2004 Dec 3;306(5702):1730-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA. arvidson@wunder.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15576608" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; Geologic Sediments ; *Mars ; Spacecraft ; Wind
    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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