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  • 5HT Uptake inhibitors  (1)
  • Benzodiazepine antagonist  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Psychopharmacology 88 (1986), S. 520-524 
    ISSN: 1432-2072
    Keywords: Benzodiazepine ; Sedation ; Locomotor activity ; Exploration ; Withdrawal ; Benzodiazepine antagonist ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The activity of rats in a holeboard test is reduced 30, 90, and 240 min after treatment with a single dose of lorazepam. The administration of a benzodiazepine antagonist (RO 15-1788) 20 min before the holeboard test (i.e., 10, 70, or 220 min after lorazepam administration) reverses the hypoactivity of animals tested 30 min after treatment with lorazepam, partially reverses the hypoactivity of animals tested 90 min after receiving lorazepam, but is without effect on the hypoactivity observed 240 min after treatment with the benzodiazepine. If, however, RO 15-1788 is given at the same time as lorazepam then it reverses the hypoactivity seen 4 h later. The results of these experiments demonstrate that a benzodiazepine can exert a behavioral effect at a time when it no longer appears to be acting at central benzodiazepine receptors.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2072
    Keywords: Mice ; 5HT Uptake inhibitors ; Ethanol ; Locomotor activity ; Anxiety
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The 5HT uptake inhibitor fluoxetine had no effect on motor activity or directed exploration (head-dipping) in a holeboard test or in an elevated plusmaze test of anxiety. Fluoxetine (20 mg/kg) attenuated the anxiolytic effect of a 2.4 g/kg dose of ethanol in the plusmaze but failed to alter ethanol's effects on exploratory head-dipping or locomotion. This interaction did not seem directly related to fluoxetine's 5HT uptake inhibiting properties because it was not observed with other 5HT uptake inhibitors (fluvoxamine and citalopram). Desipramine, which predominantly inhibits noradrenaline uptake, also failed to show effects similar to those of fluoxetine.
    Type of Medium: Electronic Resource
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