How "nice", you spamming little troll. I had only seen that other request for "sources" well after my original post, but at that point I wasn't necessarily acquainted with all the particular sources anymore or much concerned with that topic.
Nonetheless, that downregulation and upregulation of K opioid receptors occurs in the reverse of most talked-about receptors (antagonism downregulates, agonism upregulates) is one of the most basic things one can't miss if one seriously concerns oneself with any of the research, implicit to any of the studies, sometimes explicit.
(It is for example explicit in how one of the main prescription drugs for downregulation is a pure antagonist. This can only be explained with additional assumptions to the premise or a "paradoxical" reaction, but at least it should make one pay attention to it. However I have only found sudies of K-antagonism and agonism that work like this, not making it paradoxical.)
I also mentioned an easy way to test (even in the preferred opposite way...) and my statement wasn't that controversial, except that it contradicted the blind assumption of the thread starter.
I said that because I do not know.
That being said one has to look at these pathways:
These results indicate that U50,488H-induced down-regulation of the hkor involves GRK-, arrestin-2-, dynamin-, rab5-, and rab7-dependent mechanisms and receptors seem to be trafficked to lysosomes and proteasomes for degradation. Thus, U50,488H-induced internalization and down-regulation of the hkor share initial common mechanisms.
From: https://pubmed.ncbi....h.gov/10999950/
I believe GIRK inhibition (GRK) will help. Looks like SSRI might help and maybe others with (arrestin-2). I do not know anything about (dynamin-, rab5-, and rab7-) I also have to reread the literature about cAmp and see if it plays here or if it is another mechanism. What I am confident that will downregulate it is....
Quercetin (KOR and MOR antagonist; more selective at KOR; also increase in NO)
Increase in test.
cAmp increase (from OP)
*maybe* girk inhibition
I am a little iffy on GIRK inhibition; if someone can chime more in this. If someone wants to hop in and help....maybe look into (arrestin-2) that doesnt involve serotonin and (dynamin-, rab5-, and rab7-)
I am not sure if those pathways need to either be upregulated or downregulated
but curcumin *might* help with rab7:
https://www.tandfonl...4161/auto.19471
I am *guessing* upregulated from this basis:
Rab5 and Rab7 Control Endocytic Sorting along the Axonal Retrograde Transport Pathway
https://www.cell.com...6273(06)00640-4
JDTic May Restore Axonal Damage
https://www.longecit...-axonal-damage/
I just read the titles as I am a little tied up but this takes a lot of work to look into to know with confidence (which I cant say with this topic). If anyone wants to help, then here you go.
Unless I am totally mixing it incorrectly:
A combination of chloroquine and proteasome inhibitor I abolished U50,488H-induced down-regulation.
From that same article. I believe chloroquine acts the same as a GIRK inhibitor....
so it looks like you want a proteasome inhibitor I...which might get you want you want...downregulated KOR...coupled with girk inhibiton, cAmp increase, test and NO
EDIT:
From
https://en.wikipedia...asome_inhibitor
I see EGCG could be a proteasome inhibitor also found Tomatine from tomatoes to be one (this might be useful:http://www.sciencema...d.php?tid=76570)
However, looks like EGCG might me a JNK inhibitor. So maybe double down on JNK activation?
So...maybe the best best is...
Quercetin (KOR antagonist; JNK activator and increase NO)
Forskolin and Butea Superba (increase in cAmp and Test)
EGCG (proteasome inhibitor)
Girk inhibitor - (you can make your own with that plant, choloform and basic chem knowledge or buy a synthetic one)
Perhaps double dose of quercetin from EGCG or another jnk activator?
I also found this:
https://pubmed.ncbi....h.gov/17958328/
I would just micro dose that stack and add l citrulline when it makes sense (at night...long after Quercetin)
I also think chloroquine is a analogue from a natural source and you can get it from Quinine this will be in lieu of the girk inhibitor.
Edited by Rorororo, 07 June 2020 - 10:34 PM.