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  • 1
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    Regulation of C. elegans life-span by insulinlike signaling in the nervous system (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2000-10-06
    Beschreibung: An insulinlike signaling pathway controls Caenorhabditis elegans aging, metabolism, and development. Mutations in the daf-2 insulin receptor-like gene or the downstream age-1 phosphoinositide 3-kinase gene extend adult life-span by two- to threefold. To identify tissues where this pathway regulates aging and metabolism, we restored daf-2 pathway signaling to only neurons, muscle, or intestine. Insulinlike signaling in neurons alone was sufficient to specify wild-type life-span, but muscle or intestinal signaling was not. However, restoring daf-2 pathway signaling to muscle rescued metabolic defects, thus decoupling regulation of life-span and metabolism. These findings point to the nervous system as a central regulator of animal longevity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolkow, C A -- Kimura, K D -- Lee, M S -- Ruvkun, G -- AG14161/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2000 Oct 6;290(5489):147-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Massachusetts General Hospital and Department of Genetics, Harvard Medical School, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11021802" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging/genetics/*physiology ; Animals ; Caenorhabditis elegans/genetics/*physiology ; *Caenorhabditis elegans Proteins ; Catalase/genetics/metabolism ; Gene Expression Regulation ; Genes, Helminth ; Helminth Proteins/genetics/metabolism ; Intestines/cytology/physiology ; Larva/physiology ; Longevity ; Muscles/cytology/physiology ; Nervous System Physiological Phenomena ; Neurons/*physiology ; Phenotype ; *Phosphatidylinositol 3-Kinases ; Promoter Regions, Genetic ; Receptor, Insulin/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Superoxide Dismutase/genetics/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    daf-2, an insulin receptor-like gene that regulates longevity and diapause in Caenorhabditis elegans (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-08-15
    Beschreibung: A C. elegans neurosecretory signaling system regulates whether animals enter the reproductive life cycle or arrest development at the long-lived dauer diapause stage. daf-2, a key gene in the genetic pathway that mediates this endocrine signaling, encodes an insulin receptor family member. Decreases in DAF-2 signaling induce metabolic and developmental changes, as in mammalian metabolic control by the insulin receptor. Decreased DAF-2 signaling also causes an increase in life-span. Life-span regulation by insulin-like metabolic control is analogous to mammalian longevity enhancement induced by caloric restriction, suggesting a general link between metabolism, diapause, and longevity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimura, K D -- Tissenbaum, H A -- Liu, Y -- Ruvkun, G -- R01AG14161/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1997 Aug 15;277(5328):942-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9252323" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/metabolism ; Amino Acid Sequence ; Animals ; Caenorhabditis elegans/chemistry/*genetics/growth & development/metabolism ; Caenorhabditis elegans Proteins ; Chromosome Mapping ; Conserved Sequence ; Energy Intake ; *Genes, Helminth ; Glucose/metabolism ; Humans ; Insulin/metabolism ; Larva/genetics/growth & development/metabolism ; Longevity/*genetics ; Molecular Sequence Data ; Mutation ; Phosphatidylinositol 3-Kinases ; Phosphatidylinositol Phosphates/metabolism ; Phosphorylation ; Phosphotransferases (Alcohol Group Acceptor)/metabolism ; Receptor, IGF Type 1/chemistry/genetics ; Receptor, Insulin/chemistry/*genetics/metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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    AKTUELLE ARTIKEL
  • 3
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    Temperature sensing by an olfactory neuron in a circuit controlling behavior of C. elegans (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-04-12
    Beschreibung: Temperature is an unavoidable environmental cue that affects the metabolism and behavior of any creature on Earth, yet how animals perceive temperature is poorly understood. The nematode Caenorhabditis elegans "memorizes" temperatures, and this stored information modifies its subsequent migration along a temperature gradient. We show that the olfactory neuron designated AWC senses temperature. Calcium imaging revealed that AWC responds to temperature changes and that response thresholds differ depending on the temperature to which the animal was previously exposed. In the mutant with impaired heterotrimeric guanine nucleotide-binding protein (G protein)-mediated signaling, AWC was hyperresponsive to temperature, whereas the AIY interneuron (which is postsynaptic to AWC) was hyporesponsive to temperature. Thus, temperature sensation exhibits a robust influence on a neural circuit controlling a memory-regulated behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhara, Atsushi -- Okumura, Masatoshi -- Kimata, Tsubasa -- Tanizawa, Yoshinori -- Takano, Ryo -- Kimura, Koutarou D -- Inada, Hitoshi -- Matsumoto, Kunihiro -- Mori, Ikue -- New York, N.Y. -- Science. 2008 May 9;320(5877):803-7. doi: 10.1126/science.1148922. Epub 2008 Apr 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Group of Molecular Neurobiology, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18403676" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Caenorhabditis elegans/*physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Calcium/metabolism ; GTP-Binding Protein Regulators/genetics/physiology ; GTP-Binding Proteins/genetics/metabolism ; Olfactory Pathways/physiology ; Olfactory Receptor Neurons/*physiology ; Signal Transduction ; Thermosensing/*physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
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