Antagonism of 5-methoxy-N,N-dimethyltryptamine-induced changes in postdecapitation convulsions in rats by repeated treatment with drugs enhancing 5-hydroxytryptamine neurotransmission.
T Archer, B Tandberg, L Rényi, S B Ross
The Journal of pharmacy and pharmacology September 1, 1985 DOI: 10.1111/j.2042-7158.1985.tb05103.x (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Experimental study Peer reviewed |
|---|---|
| Population | Rats |
| Interventions | Zimelidine fluoxetine amiflamine alpha-ethyltryptamine alaproclate clorgyline pargyline 5-MeODMT |
| Duration | 10 days |
| Topics | 5-MeO-DMT DMT |
| Citations | 8 |
| Key findings | Repeated administration of tryptaminergic drugs blocks the acute effects of 5-MeODMT on postdecapitation convulsions, suggesting down-regulation of spinal serotonin receptors. |
Abstract
Repeated administration of drugs that increase tryptaminergic neurotransmission antagonized the increase in latency to onset and the duration of postdecapitation convulsions (PDCs) induced by an acute 5-methoxy-N,N-dimethyltryptamine (5-MeODMT) injection; Zimelidine (2 X 5 mg kg-1), fluoxetine (2 X 5 mg kg-1), amiflamine (2 X 2.5 mg kg-1) and alpha-ethyltryptamine (2 X 2.5 mg kg-1) administered orally over 10 days caused a substantial blockade of the increase in latency to onset and duration of PDCs following 5-MeODMT, whereas alaproclate (2 X 5 mg kg-1), clorgyline (1 X 1 mg kg-1) and pargyline (2 X 2.5 mg kg-1) caused a lesser blockade. Repeated 5-MeODMT (3 X 2 mg kg-1) administration blocked the acute effects of 5-MeODMT (2 and 4 mg kg-1) upon PDCs completely. These findings indicate down-regulation of the 5-hydroxytryptamine receptors which mediate the action of 5-MeODMT on the PDCs and offer a simple model system for studying 5-HT receptor sensitivity changes at the spinal level.