Evidence for 5-HT2 involvement in the mechanism of action of hallucinogenic agents.
The affinities (Ki values) of twenty two psycho-active agents, including LSD, 5-OMe DMT and a series of phenalkylamine derivatives, for cortical 5-HT1 and 5-HT2 binding sites were compared with two measures of behavioral activity. It was found that a significant correlation (r = 0.938) exists between the 5-HT2 binding affinities of these agents and their ED50 values as determined in tests of stimulus generalization using 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane ( DOM) as the training drug. Furthermore, for fifteen of these agents where human data were available, a significant correlation (r = 0.924) also exists between 5-HT2 binding affinities and their human hallucinogenic potencies. The results of this study suggest that the mechanism of action of these agents involves 5-HT2-related events.[1]References
- Evidence for 5-HT2 involvement in the mechanism of action of hallucinogenic agents. Glennon, R.A., Titeler, M., McKenney, J.D. Life Sci. (1984) [Pubmed]
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