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Related Concept Videos

Drugs Acting on Autonomic Ganglia: Stimulants01:23

Drugs Acting on Autonomic Ganglia: Stimulants


Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...

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Related Experiment Video

Updated: Jun 22, 2026

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder
07:51

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder

Published on: June 18, 2018

Correlates of individual differences in compensatory nicotine self-administration in rats following a decrease in

Andrew C Harris1, Paul R Pentel, Mark G LeSage

  • 1Minneapolis Medical Research Foundation, Minneapolis, MN 55404, USA. harr0547@umn.edu

Psychopharmacology
|May 29, 2009
PubMed
Summary
This summary is machine-generated.

Individual differences in compensatory smoking, where smokers increase intake when nicotine dose is reduced, were studied in rats. Higher baseline smoking rates were linked to lower compensation, suggesting a potential target for harm reduction strategies.

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Area of Science:

  • Behavioral neuroscience
  • Pharmacology

Background:

  • Tobacco harm reduction strategies are limited by compensatory smoking behavior.
  • Understanding individual variability in compensation is crucial for assessing harm reduction feasibility.

Purpose of the Study:

  • To investigate individual differences in compensatory smoking using an animal model.
  • To examine factors contributing to compensation in nicotine self-administration (NSA) when nicotine unit dose is decreased.

Main Methods:

  • Rats underwent nicotine self-administration (NSA) with a reduced unit dose.
  • Nicotine intake and infusion rates were monitored over 23-h sessions.
  • Nicotine pharmacokinetic parameters were determined.

Main Results:

  • Rats showed partial compensation, with intake decreases less than dose reductions.
  • Infusion rates increased during sessions, with significant individual variability in compensation.
  • Higher baseline infusion rates correlated with lower compensation; pharmacokinetics were not correlated.

Conclusions:

  • Individual differences in compensatory smoking exist and are influenced by baseline behavior.
  • This animal model can help characterize mechanisms behind human compensatory smoking.
  • Findings offer insights into the feasibility of tobacco harm reduction interventions.