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  • 1
    Electronic Resource
    Electronic Resource
    Distribution of transposable elements in neotropical species of Drosophila (1997)
    Springer
    Genetica 101 (1997), S. 153-165 
    Details
    ISSN: 1573-6857
    Keywords: transposable elements ; Drosophila ; gypsy ; hobo ; P element ; mariner ; I element
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The phylogenetic distribution of transposable families, P, gypsy, hobo, I, and mariner has been analyzed in 33 species of 11 groups of neotropical Drosophila and a Drosophilidae species Zygotrica vittimaculosa, using squash blot and dot blot. Genomic DNA of almost all neotropical species tested hybridized with gypsy probe and some species showed a particularly strong hybridization signal, as D. gaucha, D. virilis, and species of flavopilosa group. The hobo element was restricted to melanogaster group and some strains of D. willistoni. Only D. simulans DNA showed hybridization to mariner probe in all species tested and D. simulans and D. melanogaster showed hybridization with I element probe. P element homologous sequence was present in D. melanogaster and all species and strains of the willistoni and saltans groups tested. The presence of at least one P-homologous sequence was detected in Drosophila mediopunctata. This one was the only P-bearing species of all six tested from the tripunctata group. Four different pairs of primers homologous to segments of the canonical sequence of D. melanogaster's P were used to amplify specific sequences from D. mediopunctata DNA, showing the occurrence of seemingly well-conserved P-homologous sequences.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018381104700
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    Paper (German National Licenses)
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  • 2
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    Appetite-suppressing effects of urocortin, a CRF-related neuropeptide (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-09-13
    Description: The neuropeptide corticotropin-releasing factor (CRF) is well known to act on the central nervous system in ways that mimic stress and result in decreases in exploration, increases in sympathetic activity, decreases in parasympathetic outflow, and decreases in appetitive behavior. Urocortin, a neuropeptide related to CRF, binds with high affinity to the CRF2 receptor, is more potent than CRF in suppressing appetite, but is less potent than CRF in producing anxiety-like effects and activation. Doses as low as 10 nanograms injected intracerebroventricularly were effective in decreasing food intake in food-deprived and free-feeding rats. These results suggest that urocortin may be an endogenous CRF-like factor in the brain responsible for the effects of stress on appetite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spina, M -- Merlo-Pich, E -- Chan, R K -- Basso, A M -- Rivier, J -- Vale, W -- Koob, G F -- 1 F05 TW05262/TW/FIC NIH HHS/ -- DK 26741/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1996 Sep 13;273(5281):1561-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuropharmacology, Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8703220" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite/*drug effects ; Appetite Depressants/administration & dosage/metabolism/*pharmacology ; Behavior, Animal/drug effects ; Blood Pressure/drug effects ; Carrier Proteins/metabolism ; Corticotropin-Releasing Hormone/administration & dosage/metabolism/*pharmacology ; Dose-Response Relationship, Drug ; Eating/drug effects ; Fasting ; Injections, Intraventricular ; Motor Activity/drug effects ; Rats ; Rats, Wistar ; Receptors, Corticotropin-Releasing Hormone/metabolism ; Urocortins ; Urotensins/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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