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  • 1970-1974  (5)
  • Nicotine  (3)
  • Apomorphine  (1)
  • Mescaline  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Nicotine as a discriminative stimulus in rats depleted of norepinephrine or 5-hydroxytryptamine (1972)
    Springer
    Psychopharmacology 24 (1972), S. 417-429 
    Details
    ISSN: 1432-2072
    Keywords: State-Dependent Learning ; Nicotine ; 5-Hydroxytryptamine ; Norepinephrine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rats were trained to make a specific behavioral response in a T-maze apparatus conditional upon whether they were injected with 0.4 mg/kg nicotine or saline. Depletion of brain levels of 5-hydroxytryptamine by orally administered para-chlorophenylalanine had no significant effect on the rats' ability to discriminate nicotine. However, both insoluble alpha-methyl-p-tyrosine and its ester, at intraperitoneal doses of 90 and 135 mg/kg, respectively, significantly decreased discrimination of nicotine at 180 and 270 min post-administration. At these doses and times, saline discrimination was not altered. The experimental evidence indicates that nicotine's CNS cueing effect is mediated by norepinephrine, and this is discussed in light of the Burn and Rand hypothesis. It is proposed that, nicotine may act on a specific nicotine-sensitive cholinergic receptor in the CNS, which causes release of norepinephrine which, in turn, produces the interoceptive cueing effect that enables the rats to make the appropriate behavioral response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402536
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of apomorphine and nigrostriatal lesions on aggression and striatal dopamine turnover during morphine withdrawal: Evidence for dopaminergic supersensitivity in protracted abstinence (1974)
    Springer
    Psychopharmacology 34 (1974), S. 37-44 
    Details
    ISSN: 1432-2072
    Keywords: Aggression ; Morphine Addiction ; Apomorphine ; Dopamine Receptors ; Receptor Supersensitivity ; Narcotic Abstinence ; Nigrostriatal Lesion ; Medial Forebrain Bundle Lesion ; Protracted Abstinence ; Dopamine Turnover
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Reliable aggression was seen in rats which were grouped 30 days after undergoing continuous withdrawal from morphine. This withdrawal aggression, associated with long-lasting effects of morphine dependence, was blocked by morphine or lesions of the nigrostriatal bundle, but not by lesions of the median forebrain bundle. When the nigrostriatal lesioned rats were treated with a small dose of apomorphine, the aggression was reinstated. Apomorphine reduced the turnover of dopamine in the 30-day withdrawn rats at doses which were ineffective in similarly housed non-dependent rats. These results suggest that animals undergoing protracted morphine abstinence show aggression due to a latent dopaminergic supersensitivity, similar to that previously reported during acute narcotic withdrawal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00421218
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Transfer of state-dependent control of discriminative behaviour between subcutaneously and intraventricularly administered nicotine and saline (1973)
    Springer
    Psychopharmacology 32 (1973), S. 327-335 
    Details
    ISSN: 1432-2072
    Keywords: Nicotine ; Intraventricular ; State-Dependent Behaviour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rats were trained to choose between the side compartments of a three-chambered shock-escape apparatus according to whether they were injected with nicotine or saline. Half of the rats learned to discriminate between 0.4 mg/kg nicotine and saline administered subcutaneously, whereas the other half learned to differentiate between 644 ng nicotine or saline administered intraventricularly. The rats trained by the subcutaneous route of administration had the ability to discriminate between nicotine and saline given intraventricularly and the rats trained by the intraventricular route could differentiate when the two substances were injected subcutaneously. This transfer of state-dependent control of discriminative behaviour between subcutaneously and intraventricularly administered nicotine and saline is presented as evidence for the central origin of the nicotine-produced interoceptive cue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429468
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Lysergic acid diethylamide (LSD) as a discriminative cue: Drugs with similar stimulus properties (1972)
    Springer
    Psychopharmacology 26 (1972), S. 313-316 
    Details
    ISSN: 1432-2072
    Keywords: LSD ; Mescaline ; Psilocybin ; State-Dependent Learning
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rats were trained to choose between the arms of a T-maze apparatus according to whether they were injected i.p. with 0.1 Μmol/kg LSD or 0.9% saline. The LSD drug-state acquired the properties of a discriminative stimulus, possibly by producing interoceptive cues. Doses of 9.0 Μmol/kg psilocybin and 90 and 120 Μmol/kg mescaline produced cueing effects which were not significantly different from the cueing effect of LSD. However, d-amphetamine (14.8 and 29.6 Μmol/kg) did not appear to produce an LSD-like cue. These results suggest that LSD, mescaline and psilocybin, when administered in functionally equivalent doses, produce qualitatively similar interoceptive cues in the rat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00422707
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Nicotine as a discriminative cue in rats: Inability of related drugs to produce a nicotine-like cueing effect (1972)
    Springer
    Psychopharmacology 27 (1972), S. 379-387 
    Details
    ISSN: 1432-2072
    Keywords: Nicotine ; State-Dependent Behavior ; Lobeline ; Amphetamine ; Arecoline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rats were trained to enter one arm of a T-maze after the subcutaneous administration of 0.4 mg/kg and to enter the opposite arm following the injection of an equal volume of saline. Administration of 0.4 mg/kg nicotine isomethonium iodide hydroiodide, 0.4–10.0 mg/kg lobeline sulfate, 2.0 and 4.0 mg/kg d-amphetamine sulfate and 0.25–2.0 mg/kg arecoline hydrobromide produced responses which resembled the established saline effect. Pretreatment with 10.0 mg/kg lobeline had no significant effect on the nicotine-cued response. The inability of these structurally and/or functionally similar drugs to produce a nicotine-like discriminative effect is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429392
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    Paper (German National Licenses)
    Fulltext
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