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  • indolopyridoquinazolines  (2)
  • 25.40.Qa  (1)
  • Afferent transmission  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Minor indolopyridoquinazoline alkaloids from Euxylophora paraensis
    Amsterdam : Elsevier
    Phytochemistry 12 (1973), S. 2521-2525 
    Details
    ISSN: 0031-9422
    Keywords: Euxylophora paraensis ; Rutaceae ; alkaloids ; euxylophoricines-D and -E. ; euxylophorines-C and -D ; indolopyridoquinazolines
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(73)80468-6
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    1-Hydroxyrutaecarpine from Euxylophora paraensis
    Amsterdam : Elsevier
    Phytochemistry 13 (1974), S. 1603-1606 
    Details
    ISSN: 0031-9422
    Keywords: 1-hydroxyrutaecarpine. ; Euxylophora paraensis ; Rutaceae ; alkaloids ; indolopyridoquinazolines
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(74)80336-5
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Glutamate excitatory effects on ampullar receptors of the frog (1995)
    Springer
    Amino acids 9 (1995), S. 265-273 
    Details
    ISSN: 1438-2199
    Keywords: Amino acids ; Vestibular receptors ; Semicircular canals ; Intraaxonal recordings ; Afferent transmission ; Glutamate receptors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The action of glutamate on frog ampullar receptors was investigated to assess the potential role of this excitatory amino acid as an afferent transmitter in the hair cell system. Intracellular recordings from single afferent units in the isolated labyrinth revealed that glutamate and the glutamate receptor agonists, N-methyl-D-aspartic acid, quisqualic acid and kainic acid increase dose-dependently the frequency of the resting afferent discharge of EPSPs and spikes and produce long lasting depolarizations. After blocking synaptic transmission by using 5 mM Co2+, the same compounds elicited only depolarizations of amplitude comparable to those observed in normal saline. Quisqualic acid and kainic acid were much more potent than N-methyl-D-aspartic acid in increasing the frequency of afferent discharge and in causing axonal depolarizations. The depolarization caused by glutamate was reduced dose-dependently by the competitive non-NMDA receptor antagonist 6-cyano-7-nitroquinaxoline-2,3 dione and disappeared almost completely in Na+-free Ringer solution. These results are consistent with the hypothesis that glutamate is the afferent transmitter in vestibular organs and indicate that receptors mainly of the non-NMDA type are present not only at postsynaptic level but also in hair cells. Presynaptic glutamate receptors may function as autoreceptors controlling by a positive feed-back mechanism the release of the afferent transmitter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00805957
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Inclusive (p, π0) reactions atE lab=200 MeV (1989)
    Springer
    The European physical journal 333 (1989), S. 393-395 
    Details
    ISSN: 1434-601X
    Keywords: 25.40.Qa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The inclusive production of neutral pions has been studied with a proton beam atE lab =200 MeV. The twoγ rays from theπ 0 decay were detected by means of a setup of ten Pb-glass Cherenkov detectors. Measurements on several targets (C, Al, Ni, Y,118Sn,124Sn, Pb, U) have been made to investigate theA-dependence. A fit of the total experimental cross sections is obtained with a relationσ tot incl =10.3×A 0.83 μb. Comparison with (p, π±) reactions is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01299693
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    Paper (German National Licenses)
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