Evidence that ibogaine releases dopamine from the cytoplasmic pool in isolated mouse striatum.
L G Harsing, Henry Sershen, Ábel Lajtha
Journal of neural transmission. General section 1994 DOI: 10.1007/bf01294788 (opens in new tab)
Study at a glance
AI-extracted from the abstractAbstract
We measured the effect of ibogaine on the tritium efflux from isolated mouse striatum preloaded with [3H]dopamine ([3H]DA). Ibogaine increased the basal tritium outflow in a concentration-dependent manner, but it was without effect on electrical stimulation-induced tritium overflow. Separation of the released radioactivity after ibogaine administration showed that this drug increased the release of [3H]DA and [3H]-dihydroxyphenylacetic acid ([3H]DOPAC), but the efflux of O-methylated-deaminated metabolites was not changed. The dopamine (DA)-releasing effect of ibogaine was reduced by the DA uptake inhibitors cocaine and nomifensine. The tritium efflux evoked by ibogaine was not altered by omission of Ca2+ from the perfusion buffer or by inhibition of the voltage-sensitive Na+ channels with tetrodotoxin. Ibogaine maintained its effect on release from superfused striatum prepared from reserpine-pretreated mice. The ibogaine-induced tritium release measured from mouse striatum that was preloaded with [3H]DA was not affected by the D-2 DA receptor ligands (-)-quinpirole and (+/-)-sulpiride, indicating that the ibogaine-induced release is not subject to presynaptic autoreceptor regulation. Ibogaine failed to affect [3H]DA uptake and retention in mouse striatum. These data indicate that at the nerve terminal level ibogaine releases DA, and the primary source for the release is probably the cytoplasmic pool. The DA-releasing effect of ibogaine may have importance in mediation of its hallucinogenic action, as seen in a frequent practice in African cults.
Comparable studies
Other preclinical and animal studies on ibogaine, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Noncompetitive Functional Inhibition at Diverse, Human Nicotinic Acetylcholine Receptor Subtypes by Bupropion, Phencyclidine, and Ibogaine TE671/RD cells (human muscle-type nAChR) and SH-SY5Y neuroblastoma cells (human... | 1999 | In vitro study | |
| Degeneration of Purkinje cells in parasagittal zones of the cerebellar vermis after treatment with ibogaine or harmaline. Ibogaine- or harmaline-treated rats | 1993 | Experimental animal study | |
| Effects and aftereffects of ibogaine on morphine self-administration in rats. Rats | 1991 | Preclinical experimental study | |
| Effects of iboga alkaloids on morphine and cocaine self-administration in rats: relationship to tremorigenic effects and to effects on dopamine release in nucleus accumbens and striatum. Rats | 1994 | Experimental study | |
| Glial Cell Line-Derived Neurotrophic Factor Mediates the Desirable Actions of the Anti-Addiction Drug Ibogaine against Alcohol Consumption Rats | 2005 | Experimental study |
Citations in the library
Cited by 15
- Pharmacological screen for activities of 12-hydroxyibogamine: a primary metabolite of the indole alkaloid ibogaine. Psychopharmacology September 1, 1996
- Ibogaine block of the NMDA receptor: in vitro and in vivo studies. Neuropharmacology April 1, 1996
- Ibogaine and cocaine abuse: pharmacological interactions at dopamine and serotonin receptors. Brain Research Bulletin 1997
- The effects of ibogaine on dopamine and serotonin transport in rat brain synaptosomes. Brain Research Bulletin April 1, 1999
- The effect of ibogaine on kappa-opioid- and 5-HT3-induced changes in stimulation-evoked dopamine release in vitro from striatum of C57BL/6By mice. Brain Research Bulletin 1995
and 10 more in the library
Cites 7
- Effects and aftereffects of ibogaine on morphine self-administration in rats. European Journal of Pharmacology April 3, 1991
- Interactions between ibogaine, a potential anti-addictive agent, and morphine: an in vivo microdialysis study. European Journal of Pharmacology June 18, 1991
- Acute and prolonged effects of ibogaine on brain dopamine metabolism and morphine-induced locomotor activity in rats. Brain Research March 13, 1992
- Ibogaine antagonizes cocaine-induced locomotor stimulation in mice. Life Sciences 1992
- Interactions between ibogaine and cocaine in rats: in vivo microdialysis and motor behavior. European Journal of Pharmacology March 3, 1992
and 2 more in the library