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Ethnobotanicals Psychedelic plants, Iboga, Calea, Blue lotus, Ephedra, Sinicuichi, Betel nut, etc.

 
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  #1  
Old 28-06-2010, 06:44
Porvata Porvata is offline
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Psychotria Umbellata-Opiate, anxiolytic and possible dissociative/psychedelic?

So SWIM was just scouring the internet in an attempt to stumble upon some obscure plants with possible psychoactivity and they found some articles on this plant.

First off, it contains Umbellatine, which seems to have opiate-like activity as well as possible NMDA antagonism.

Quote:
“Interesting analgesic activity has been previously identified in alkaloids isolated from the genus Psychotria (Rubiaceae). We here report the analgesic activity of umbellatine, a new glycoside indole monoterpene alkaloid isolated from Psychotria umbellata. Umbellatine produced a dose-dependent (100-300 mg/kg) analgesic effect, partially reversed by naloxone, in the tail-flick and hot-plate models. These results suggest an analgesic effect at least in part associated with the activation of opioid receptors. In the formalin- and capsaicininduced pain models, umbellatine (100-300 mg/kg) elicited significant and dose-related antinociception. Umbellatine acts synergistically when co-administered with the NMDA antagonist MK-801. These results indicate the involvement of NMDA receptors in the umbellatine mechanism of action. Such a combined mode of action can be of relevance for developing analgesics useful in neurophatic pain.”
Another compound found in this plant, Psychollatine appears to have anxiolytic effects and bind to the 5-HT2a subtype receptor.

Quote:
“Behavioral effects of psychollatine, a new glycoside indole monoterpene alkaloid isolated from Psychotria umbellata, was investigated in models of anxiety, depression, memory, tremor, and sedation related to 5-HT and/or GABA neurotransmission. The GABA antagonist picrotoxin and the 5-HT2 antagonist ritanserin were used to examine the role of GABA and 5-HT2 receptors in psychollatine-induced effects. In the light/dark and hole-board models of anxiety, diazepam (0.75 mg/kg) and psychollatine (7.5 and 15 mg/kg) showed anxiolytic-like effect at doses that do not increase sleeping time nor alter spontaneous locomotor activity. The anxiolytic effect of psychollatine was prevented by prior administration of ritanserin, but not of picrotoxin, indicating that 5-HT2 but not GABA receptors are implicated. In the forced swimming model of depression, psychollatine (3 and 7.5 mg/kg) effects were comparable to the antidepressants imipramine (15 mg/kg) and fluoxetine (20 mg/kg). Psychollatine suppressed oxotremorine-induced tremors in all doses. In the step-down learning paradigm, diazepam (0.85 mg/kg), MK-801 (0.15 mg/kg), and psychollatine 100 mg/kg impaired the acquisition of learning and memory consolidation, without interfering with retrieval. It is concluded that the effects of psychollatine at the central nervous system involve serotonergic 5HT2(A/C) receptors.”
SWIM was under the impression that most 5-HT2a agonists are psychedelic so they wonder if this compound might possibly have psychedelic properties if it does indeed act on those receptors. Needless to say this sounds like a very interesting plant.

Post Quality Reviews:
Very interesting. First bit of info I've ever seen on this plant.

Last edited by Porvata; 28-06-2010 at 06:51. Reason: Removal of incorrect information.
  #2  
Old 17-09-2010, 00:55
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Re: Psychotria Umbellata-Opiate, anxiolytic and possible dissociative/psychedelic?

Wow this is really interesting. Has anyone tried this, if so I would love to read an experience report

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opiate, opiates, psychedelia, psychedelic, psychotria

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