Dondante
Bluelighter
- Joined
- Dec 6, 2005
- Messages
- 1,638
So it seems there is some evidence that salvia may have this property. I'm looking for others that have experienced antidepressant effects. I'm also trying to figure out how salvia does this, and why the hell its hallucinogenic.
What I've gathered is that salvinorin A is a potent KOR agonist. KORs are found on dopaminergic neurons projecting from the ventral tagmental area to GABAergic neurons in the nucleus accumbens. Dopamine release activates G-alpha S resulting in cAMP production, subsequent CREB activation, which causes transcription of dynorphin. Dynorphin is the body's KOR ligand so I suppose salvia has a similar effect ... it activates the presynaptic KORs, which decreases dopamine release in the nucleus accumbens.
So the short term effect of salvia is decreased dopamine release. If salvia has antidepressant effects, it must be through modulation of the mesolimbic reward pathway discussed above. So my guess is that salvinorin A causes downregulation of the KOR, which results in increased dopamine transmission in the nucleus accumbens, and a lasting decreased response to dynorphin. For this too happen, though, wouldn't salvia have to cause tolerance? Another option would be that salvia's immediate effect has more lasting inhibitory effects on CREB activation and dynorphin transcription. Maybe lower levels of dynorphin persist after the short, but significant drop in dopamine transmission.
Also, I'm curious how this pathway relates to salvia's intense hallucinogenic action. "... GABAergic medium spiny neurons of the NAc shell receive a significant glutamatergic input from the PFC, amygdala, and hippocampus. Kappa-receptors are present on the presynaptic terminals of presumed excitatory synapses as well as on the dendrites of the medium spiny neurons." So it could be through modulation of glutamatergic transmission in the PFC if I read that right, but I assume it must be very different from the effect of serotonergic psychedelics.
http://jn.physiology.org/cgi/reprint/85/3/1153
Anyway, I found a few examples of salvia as an antidepressant, but I'm interested to hear more. Does it work better with the quid method instead? How long does the relief last? Thanks for any input.
What I've gathered is that salvinorin A is a potent KOR agonist. KORs are found on dopaminergic neurons projecting from the ventral tagmental area to GABAergic neurons in the nucleus accumbens. Dopamine release activates G-alpha S resulting in cAMP production, subsequent CREB activation, which causes transcription of dynorphin. Dynorphin is the body's KOR ligand so I suppose salvia has a similar effect ... it activates the presynaptic KORs, which decreases dopamine release in the nucleus accumbens.
So the short term effect of salvia is decreased dopamine release. If salvia has antidepressant effects, it must be through modulation of the mesolimbic reward pathway discussed above. So my guess is that salvinorin A causes downregulation of the KOR, which results in increased dopamine transmission in the nucleus accumbens, and a lasting decreased response to dynorphin. For this too happen, though, wouldn't salvia have to cause tolerance? Another option would be that salvia's immediate effect has more lasting inhibitory effects on CREB activation and dynorphin transcription. Maybe lower levels of dynorphin persist after the short, but significant drop in dopamine transmission.
Also, I'm curious how this pathway relates to salvia's intense hallucinogenic action. "... GABAergic medium spiny neurons of the NAc shell receive a significant glutamatergic input from the PFC, amygdala, and hippocampus. Kappa-receptors are present on the presynaptic terminals of presumed excitatory synapses as well as on the dendrites of the medium spiny neurons." So it could be through modulation of glutamatergic transmission in the PFC if I read that right, but I assume it must be very different from the effect of serotonergic psychedelics.
http://jn.physiology.org/cgi/reprint/85/3/1153
Anyway, I found a few examples of salvia as an antidepressant, but I'm interested to hear more. Does it work better with the quid method instead? How long does the relief last? Thanks for any input.
Qabbo said:Most psychedelics make me feel a refreshed appreciation for life. Salvia, however, seems to be extremely anti-depressant for me. Even smoking very small amounts (far below breakthrough) seems to lift a great weight off my shoulders. If I am out of pot and really aching for a toke, a bowl of salvia--plain leaf even--can make that all melt away!
F&B said:There's a link on Erowid to a paper by an Aussie psychiatrist detailing a woman who experienced antidepressant effects from low dose salvia. What's even more noteworthy is that the woman hadn't responded to any of the normal antidepressants. I found that low sublingual doses had an antidepressant effects that were noticable from the very first dose.
No doubt somebody, somewhere will be looking at kappa agonists as potentially novel drugs for depression (they'd have to minimize the trippy feelings for clinical use though!)
Last edited: