Cited by 134Neurotransmitter Receptor Influence on BehaviorRegulation of Appetite and ObesityNeuropeptides and Animal Physiology

Food deprivation and acquisition of intravenous cocaine self-administration in rats: effect of naltrexone and haloperidol.

De Vry, J, Donselaar, I, Van Ree, J M·1989·The Journal of Pharmacology and Experimental Therapeutics

Abstract

In order to create optimal conditions for the acquisition of i.v. cocaine self-administration in the rat, three groups of rats were deprived of food to different extents in order to obtain body weight reductions of 5 to 15, 15 to 25 and 25 to 35% of the pre-experimental body weights, and were tested for five consecutive 6-hr sessions in a continuous reinforcement procedure for self-administration of cocaine (0.12 mg/ml) or saline. Self-administration interacted with weight loss and indicated that: 1) a minimum level of 15 to 25% weight loss was required to obtain cocaine self-administration; 2) weight loss-induced potentiation of cocaine self-administration resulted from an interaction of increased nonspecific lever pressing activity and increased reinforcing effects of the compound; and 3) optimal differentiation between cocaine- and saline-induced responding was obtained at 15 to 25% weight loss. Daily pretreatment during the five test sessions, with 0.1 to 1.0 mg/kg of naltrexone or 43 to 375 micrograms/kg of haloperidol, dose-dependently decreased the number of cocaine (0.12 mg/ml) self-injections. Naltrexone pretreatment, and to a lesser extent haloperidol pretreatment, appeared to affect cocaine self-administration in a specific manner; both treatments affected responding on the reinforced lever, but not responding on the nonreinforced lever. Self-administration of 0.06 mg/ml of cocaine tended to be decreased by naltrexone (1 mg/kg) and haloperidol (375 micrograms/kg); whereas self-administration induced by 0.25 mg/ml of cocaine was not significantly affected by naltrexone or haloperidol. Both treatments failed to affect self-administration of saline.(ABSTRACT TRUNCATED AT 250 WORDS)

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Crossref · 10.1016/s0022-3565(25)20871-0

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  • The endogenous opioid system plays a strong role in the development of addiction to every class of drug.

    “While opiate drugs are themselves strongly addictive, the role of the endogenous opioid system in addiction is not limited to these, as this system plays a strong role in the development of addiction to every class of drug (Altshuler et al 1980; Karras and Kane 1980; De Vry et al 1989; Kuzmin et al 1997; Ismayilova and Shoaib 2010; for a review see van Ree et al, 1999).”

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Authors
De Vry, J., Donselaar, I., & Van Ree, J. M.
Venue
The Journal of Pharmacology and Experimental Therapeutics
Publisher
Elsevier BV
Published
1989-11
Volume
251
Issue
2
Pages
735-740
ISSN
0022-3565 (ISSN-L)
OpenAlex
W2265469528
Cited by
134
References
0
Citations by year
2025: 1 · 2023: 1 · 2021: 1 · 2019: 1 · 2017: 2 · 2014: 4 · 2012: 3
FWCI
1.76
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Pharmacology and Experimental Therapeutics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
cocaine self-administration, food deprivation, weight loss, naltrexone, haloperidol, opioid antagonists, antipsychotic drugs, cocaine potentiation, lever pressing, drug discrimination, continuous reinforcement, rats
MeSH terms
Animals, Body Weight, Cocaine, Food Deprivation, Haloperidol, Male, Naltrexone, Rats, Inbred Strains, Reinforcement, Psychology, Self Administration, Rats

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