Abstract
Repeated voluntary consumption of cannabis in milk (approximately 8 mg per day for 15 days) produced in mice tolerance to the hypothermic effect of tritiated Δ1-tetrahydrocannabinol ([3H]-Δ1-THC; 2 mg/kg i.v.) but not to the effect of [3H]-Δ1-THC on immobility index. The development of tolerance was not accompanied by any detectable change in levels of radioactivity in the brain assigned to Δ1-THC or its metabolites. It was concluded that changes in metabolism or distribution of Δ1-THC are not responsible for tolerance at least to the hypothermic effect of Δ1-THC in mice.
Full text
PDF


Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Christensen H. D., Freudenthal R. I., Gidley J. T., Rosenfeld R., Boegli G., Testino L., Brine D. R., Pitt C. G., Wall M. E. Activity of delta8- and delta9-tetrahydrocannabinol and related compounds in the mouse. Science. 1971 Apr 9;172(3979):165–167. doi: 10.1126/science.172.3979.165. [DOI] [PubMed] [Google Scholar]
- Dewey W. L., McMillan D. E., Harris L. S., Turk R. F. Distribution of radioactivity in brain of tolerant and nontolerant pigeons treated with 3 H- 9 -tetrahydrocannabinol. Biochem Pharmacol. 1973 Feb 1;22(3):399–405. doi: 10.1016/0006-2952(73)90420-6. [DOI] [PubMed] [Google Scholar]
- Gill E. W., Jones G. Brain levels of 1 -tetrahydrocannabinol and its metabolites in mice--correlation with behaviour, and the effect of the metabolic inhibitors SKF 525A and piperonyl butoxide. Biochem Pharmacol. 1972 Aug 15;21(16):2237–2248. doi: 10.1016/0006-2952(72)90039-1. [DOI] [PubMed] [Google Scholar]
- Gill E. W., Jones G., Lawrence D. K. Contribution of the metabolite 7-hydroxy-delta1-tetrahydrocannabinol towards the pharmacological activity of delta 1-tetrahydrocannabinol in mice. Biochem Pharmacol. 1973 Jan 15;22(2):175–184. doi: 10.1016/0006-2952(73)90271-2. [DOI] [PubMed] [Google Scholar]
- Ho B. T., Estevez V. S., Englert L. F. Effect of repeated administration on the metabolism of (-)- 9 -tetrahydrocannabinols in rats. Res Commun Chem Pathol Pharmacol. 1973 Jan;5(1):215–218. [PubMed] [Google Scholar]
- Jones G., Pertwee R. G. A metabolic interaction in vivo between cannabidiol and 1 -tetrahydrocannabinol. Br J Pharmacol. 1972 Jun;45(2):375–377. doi: 10.1111/j.1476-5381.1972.tb08092.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Paton W. D., Pertwee R. G. Effect of cannabis and certain of its constituents on pentobarbitone sleeping time and phenazone metabolism. Br J Pharmacol. 1972 Feb;44(2):250–261. [PMC free article] [PubMed] [Google Scholar]
- Pertwee R. G. The ring test: a quantitative method for assessing the 'cataleptic' effect of cannabis in mice. Br J Pharmacol. 1972 Dec;46(4):753–763. doi: 10.1111/j.1476-5381.1972.tb06900.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
