Reduction of nicotine self-administration by chronic nicotine infusion with H1 histamine blockade in female rats.

Published

Journal Article

RATIONALE: Chronic nicotine infusion via transdermal patches has been widely shown to assist with smoking cessation. In particular, transdermal nicotine treatment prior to quitting smoking helps reduce ad libitum smoking and aids cessation Rose et al. (Nicotine Tob Res 11:1067-75, 2009). However, despite this success, the majority of smokers who use transdermal nicotine fail to permanently quit smoking. Additional treatments are needed. Tobacco addiction does not just depend on nicotinic receptor systems; a variety of neural systems are involved, including dopamine, norepinepherine, serotonin, and histamine. OBJECTIVES: Given the involvement of a variety of neural systems in the circuits of addiction, combination therapy may offer improved efficacy for successful smoking cessation beyond single treatments alone. We have found that pyrilamine, an H1 histamine antagonist, significantly decreases nicotine self-administration in rats. METHODS: The current study was conducted to confirm the effect of chronic nicotine infusion on ongoing nicotine self-administration and resumed access after enforced abstinence and to determine the interaction of chronic nicotine with an H1 antagonist treatment. RESULTS: Chronic nicotine infusion via osmotic minipump (2.5 and 5 mg/kg/day for 28 days) significantly reduced nicotine self-administration in a dose-dependent manner. Chronic nicotine infusion also reduced the resumption of nicotine self-administration after enforced abstinence. Chronic pyrilamine infusion (25 mg/kg/day for 14 days) also significantly reduced nicotine self-administration. CONCLUSION: The combination of chronic nicotine and pyrilamine reduced nicotine self-administration to a greater extent than treatment with either drug alone.

Full Text

Duke Authors

Cited Authors

  • Levin, ED; Hall, BJ; Chattopadhyay, A; Slade, S; Wells, C; Rezvani, AH; Rose, JE

Published Date

  • August 2016

Published In

Volume / Issue

  • 233 / 15-16

Start / End Page

  • 3009 - 3015

PubMed ID

  • 27318988

Pubmed Central ID

  • 27318988

Electronic International Standard Serial Number (EISSN)

  • 1432-2072

Digital Object Identifier (DOI)

  • 10.1007/s00213-016-4347-1

Language

  • eng

Conference Location

  • Germany