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  • American Association for the Advancement of Science (AAAS)
  • 1995-1999  (4)
  • 1980-1984  (13)
  • 1965-1969
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Keywords
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Year
  • 1
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    Emerging marine diseases--climate links and anthropogenic factors (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-25
    Description: Mass mortalities due to disease outbreaks have recently affected major taxa in the oceans. For closely monitored groups like corals and marine mammals, reports of the frequency of epidemics and the number of new diseases have increased recently. A dramatic global increase in the severity of coral bleaching in 1997-98 is coincident with high El Nino temperatures. Such climate-mediated, physiological stresses may compromise host resistance and increase frequency of opportunistic diseases. Where documented, new diseases typically have emerged through host or range shifts of known pathogens. Both climate and human activities may have also accelerated global transport of species, bringing together pathogens and previously unexposed host populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harvell, C D -- Kim, K -- Burkholder, J M -- Colwell, R R -- Epstein, P R -- Grimes, D J -- Hofmann, E E -- Lipp, E K -- Osterhaus, A D -- Overstreet, R M -- Porter, J W -- Smith, G W -- Vasta, G R -- 1PO1 ES09563/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1505-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10498537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aquaculture ; *Climate ; Cnidaria ; *Disease Outbreaks/*veterinary ; Humans ; Infection/epidemiology/*etiology/transmission/*veterinary ; *Marine Biology ; Oceans and Seas ; Water Pollution
    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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    Teratogen-mediated inhibition of target tissue response to Shh signaling (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-11
    Description: Veratrum alkaloids and distal inhibitors of cholesterol biosynthesis have been studied for more than 30 years as potent teratogens capable of inducing cyclopia and other birth defects. Here, it is shown that these compounds specifically block the Sonic hedgehog (Shh) signaling pathway. These teratogens did not prevent the sterol modification of Shh during autoprocessing but rather inhibited the response of target tissues to Shh, possibly acting through the sterol sensing domain within the Patched protein regulator of Shh response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, M K -- Porter, J A -- Young, K E -- Beachy, P A -- New York, N.Y. -- Science. 1998 Jun 5;280(5369):1603-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9616123" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Drug-Induced/etiology ; Animals ; Cell Membrane/metabolism ; Central Nervous System/drug effects/*embryology/metabolism ; Chick Embryo ; Cholesterol/biosynthesis/*metabolism ; Culture Techniques ; DNA-Binding Proteins/biosynthesis ; Endoplasmic Reticulum/metabolism ; Hedgehog Proteins ; Hepatocyte Nuclear Factor 3-beta ; Holoprosencephaly/chemically induced ; Homeodomain Proteins/biosynthesis ; LIM-Homeodomain Proteins ; Membrane Proteins/metabolism ; Muscle Proteins/biosynthesis ; Nerve Tissue Proteins/biosynthesis ; Nuclear Proteins/biosynthesis ; PAX7 Transcription Factor ; Proteins/*metabolism ; Receptors, Cell Surface ; Signal Transduction/drug effects ; Teratogens/*pharmacology ; Tomatine/analogs & derivatives/pharmacology ; *Trans-Activators ; *Transcription Factors ; Triparanol/pharmacology ; Veratrum Alkaloids/*pharmacology ; trans-1,4-Bis(2-chlorobenzaminomethyl)cyclohexane Dihydrochloride/pharmacology
    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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    Cholesterol modification of hedgehog signaling proteins in animal development (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-11
    Description: Hedgehog (Hh) proteins comprise a family of secreted signaling molecules essential for patterning a variety of structures in animal embryogenesis. During biosynthesis, Hh undergoes an autocleavage reaction, mediated by its carboxyl-terminal domain, that produces a lipid-modified amino-terminal fragment responsible for all known Hh signaling activity. Here it is reported that cholesterol is the lipophilic moiety covalently attached to the amino-terminal signaling domain during autoprocessing and that the carboxyl-terminal domain acts as an intramolecular cholesterol transferase. This use of cholesterol to modify embryonic signaling proteins may account for some of the effects of perturbed cholesterol biosynthesis on animal development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, J A -- Young, K E -- Beachy, P A -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):255-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular Biology and Genetics, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824192" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cells, Cultured ; Cholesterol/*metabolism ; Dithiothreitol/pharmacology ; Drosophila ; *Drosophila Proteins ; *Embryonic Induction ; Embryonic and Fetal Development ; Hedgehog Proteins ; Humans ; Protein Processing, Post-Translational ; Proteins/genetics/*metabolism ; Signal Transduction ; *Trans-Activators
    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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  • 4
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    Biomedical research: a vital investment (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-06-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, J E -- New York, N.Y. -- Science. 1995 Jun 30;268(5219):1827.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7604248" target="_blank"〉PubMed〈/a〉
    Keywords: Financing, Government ; National Institutes of Health (U.S.) ; *Research/economics ; *Research Support as Topic ; 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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  • 5
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    Between disciplines (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-08-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, A L -- Rossini, F A -- Chubin, D E -- Connolly, T -- New York, N.Y. -- Science. 1980 Aug 29;209(4460):966.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17747211" 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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    Genetic vulnerability (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, W M -- Smith, D H Jr -- New York, N.Y. -- Science. 1981 Nov 20;214(4523):862.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17782425" 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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    Hurricane Allen's Impact on Jamaican Coral Reefs (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-11-13
    Description: Coral reefs of north Jamaica, normally sheltered, were severely damaged by Hurricane Allen, the strongest Caribbean hurricane of this century. Immediate studies were made at Discovery Bay, where reef populations were already known in some detail. Data are presented to show how damage varied with the position and orientation of the substraturn and with the shape, size, and mechanical properties of exposed organisms. Data collected over succeeding weeks showed striking differences in the ability of organisms to heal and survive.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woodley, J D -- Chornesky, E A -- Clifford, P A -- Jackson, J B -- Kaufman, L S -- Knowlton, N -- Lang, J C -- Pearson, M P -- Porter, J W -- Rooney, M C -- Rylaarsdam, K W -- Tunnicliffe, V J -- Wahle, C M -- Wulff, J L -- Curtis, A S -- Dallmeyer, M D -- Jupp, B P -- Koehl, M A -- Neigel, J -- Sides, E M -- New York, N.Y. -- Science. 1981 Nov 13;214(4522):749-55.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17744383" 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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  • 8
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    Plasticity of motor behavior in monkeys with crossed forelimb nerves (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-04-22
    Description: Monkeys in which nerves innervating the flexor muscles of the forearm and hand (the ulnar or the median nerve) had been surgically cross-united with the nerve innervating the extensor muscles (the radial nerve), and vice versa, showed excellent (ulnar-radial crosses) to moderate (median-radial crosses) control of movement performance after regeneration. Antagonistic movement responses were seen occasionally, but these were corrected almost immediately. Stimulation of the crossed nerves showed that they had innervated the antagonistic muscle groups. The results reveal the capacity of the primate central nervous system to adapt to gross disturbances imposed on the execution of movements by changes in peripheral innervation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brinkman, C -- Porter, R -- Norman, J -- New York, N.Y. -- Science. 1983 Apr 22;220(4595):438-40.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6836289" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Fingers/physiology ; Forearm/*innervation/physiology ; Hand/innervation/physiology ; Humans ; Macaca fascicularis ; Macaca nemestrina ; Median Nerve/physiology ; *Movement ; *Neuronal Plasticity ; Radial Nerve/physiology ; Thumb/physiology ; Ulnar Nerve/physiology
    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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    Corollary discharge provides accurate eye position information to the oculomotor system (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-09-16
    Description: The saccadic system accurately compensates for perturbations of eye position produced by microstimulation of the superior colliculus. This requires that information about the stimulation-induced change in eye position be provided by an extraretinal source--either proprioceptive endings in extraocular muscles or a centrally generated corollary discharge. It is shown that compensation remains intact after elimination of extraocular muscle proprioception, demonstrating that corollary discharge provides accurate eye position information.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guthrie, B L -- Porter, J D -- Sparks, D L -- F32 EY05651/EY/NEI NIH HHS/ -- P30 EY03039/EY/NEI NIH HHS/ -- R01 EY01189/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 Sep 16;221(4616):1193-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6612334" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Eye Movements ; Macaca mulatta ; Oculomotor Muscles/*physiology ; Photic Stimulation ; Proprioception ; *Saccades ; Superior Colliculi/*physiology
    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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    Timekeeping and culture: revolution in time (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Porter, G -- New York, N.Y. -- Science. 1984 Mar 30;223(4643):1401-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17746047" 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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