Effect of a novel nicotinic receptor antagonist, N,N′-dodecane-1,12- diyl-bis-3-picolinium dibromide, on nicotine self-administration and hyperactivity in rats

N. M. Neugebauer, Z. Zhang, P. A. Crooks, L. P. Dwoskin, M. T. Bardo*

*Corresponding author for this work

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

Rationale and objective: Recent work has shown that the novel compound N,N′-dodecane-1,12-diyl-bis-3-picolinium dibromide (bPiDDB) may selectively block nicotinic acetylcholine receptors involved in regulating dopamine release. The current experiments examined the acute effect of bPiDDB on nicotine self-administration, sucrose-maintained responding, and nicotine-induced changes in acute and sensitized locomotor activity. Methods: Rats were first trained to respond for either nicotine (i.v.) or sucrose pellets using a standard two-lever operant conditioning procedure using a fixed ratio 5 schedule of reinforcement and were then pretreated with bPiDDB (0, 0.3, 1, or 3 mg kg-1) 15 min prior to the session. In separate experiments, rats were assessed for nicotine-induced changes in locomotor activity following pretreatment with bPiDDB (1 or 3 mg kg-1) or mecamylamine (1 mg kg-1); pretreatments were assessed with both acute and repeated nicotine (0.4 mg kg-1) treatment. Results: Results showed that bPiDDB dose-dependently decreased nicotine self-administration, but not sucrose-maintained responding. In the locomotor experiments, bPiDDB attenuated the hyperactivity produced by acute and repeated nicotine; however, this effect was not robust compared to mecamylamine. In contrast to mecamylamine, bPiDDB did not block the initial hypoactivity produced by acute nicotine. Conclusion: Since bPiDDB decreased nicotine self-administration specifically, this novel nicotinic receptor antagonist may constitute a lead for the development of a clinically useful treatment for tobacco dependence.

Original languageEnglish (US)
Pages (from-to)426-434
Number of pages9
JournalPsychopharmacology
Volume184
Issue number3-4
DOIs
StatePublished - Feb 1 2006

Keywords

  • Locomotor activity
  • Mecamylamine
  • Nicotine
  • Nicotinic receptor antagonist
  • Self-administration
  • Tobacco dependence
  • bPiDDB

ASJC Scopus subject areas

  • Pharmacology

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