Effects of three tryptamines: alpha-methyltryptamine, 5-methoxy-alpha-methyltryptamine, and 5-methoxy-N,N-diisopropyltryptamine on acute toxicity, locomotor activity, and hallucinogenic behavior in mice.
Behavioural pharmacology – July 07, 2025
Source: PubMed
Summary
Understanding how synthetic compounds impact the body is vital. A study in mice explored the safety and effects of alpha-methyltryptamine and related compounds like 5-methoxy-alpha-methyltryptamine. It found these compounds can be acute toxic, reduce locomotor activity, and induce hallucinogenic effects. Crucially, a specific receptor blocker prevented these hallucinogenic effects. This research provides key data for understanding these substances.
Abstract
Alpha-methyltryptamine (AMT), 5-methoxy-alpha-methyltryptamine (5-MeO-AMT), and 5-methoxy-N,N-diisopropyltryptamine (5-MeO-DiPT) are synthetic tryptamines with hallucinogenic-like properties that are widely abused worldwide. There, however, has been a paucity of research and a lack of available data on their pharmacological properties. The objective of this study was to investigate the safety of AMT and 5-MeO-DiPT and to compare the effects of AMT, 5-MeO-AMT, and 5-MeO-DiPT under identical conditions in terms of locomotor performance and hallucinogenic-like behavior, and the role of 5-hydroxytryptamine-2A receptor antagonists (M100907) on hallucinogenic-like behavior. The results showed that both AMT and 5-MeO-DiPT exhibited some acute toxic effects. AMT, 5-MeO-AMT, and 5-MeO-DiPT inhibited locomotor activity and induced head-twitch response (HTR) in mice. Pretreatment with M100907 (0.01 mg/kg) blocked AMT, 5-MeO-AMT, and 5-MeO-DiPT induced HTR in mice. The findings of this study demonstrated that the three tryptamines are toxic, inhibit locomotor activity, and have hallucinogenic effects. These results provide experimental data that can provide fundamental support for future control strategies and in-depth mechanistic studies of these substances.