Intravenous self-administration of abused solvents and anesthetics in mice

Eur J Pharmacol. 2004 Feb 6;485(1-3):211-8. doi: 10.1016/j.ejphar.2003.11.068.


Volatile organic solvents, fuels and anesthetics are subject to abuse. The aim of the present study was to evaluate i.v. self-administration of several of these chemicals in drug- and experiment-naive mice using a commercially available vehicle, intralipid. Two strains of mice (DBA/2 and Swiss) were allowed to self-administer toluene (0.0017-0.17 micromol/infusion), 1,1,1-trichloroethane (0.006-0.19 micromol/infusion), ethanol (0.32-1.6 micromol/infusion), cyclohexane (0.0017-0.052 micromol/infusion), propofol (0.01-0.53 micromol/infusion) and flurothyl (0.00042-0.072 micromol/infusion) or their vehicles during 30-min tests. During the test, each nose-poke of the master mouse resulted in a 1.88-microl i.v. infusion to the master mouse and a yoked control mouse. When the delivery line was loaded with a reinforcing drug solution, the number of nose-pokes of the master mice significantly exceeded that for yoked control mice. In the present experiments, significant differences in rates of nose-poking were observed between mice receiving response-contingent and response-noncontingent deliveries of ethanol and toluene in both strains of mice and of 1,1,1-trichloroethane in Swiss mice. These data suggest that the reinforcing effects of abused inhalants can be studied using i.v. self-administration procedures.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Anesthetics / administration & dosage*
  • Animals
  • Dose-Response Relationship, Drug
  • Illicit Drugs / pharmacology*
  • Injections, Intravenous
  • Male
  • Mice
  • Mice, Inbred DBA
  • Reinforcement Schedule*
  • Self Administration
  • Solvents / administration & dosage*


  • Anesthetics
  • Illicit Drugs
  • Solvents