I have just potentially discovered the origin of my POIS and it is called anandamide (AEA).
I may have been here for a short time, but I must thank you for making such a great site and for all the comments that I could search in. These gave me ideas I wouldn’t have had otherwise.
Although at first I wanted to find a link between the self-theorized capsaicin-like compound and opioids it turned out that it might just be a well known endocannabinoid. Interestingly this compund might be actually a link between the two analgesic systems. I have written most of the text by the time I realized this and I was lazy to rewrite the whole so I am sorry for any incongruity.
Previously I might have not emphasized enough that the compound I place behind the initiation of the whole POIS cascade (at least in my case) has the exact same properties as capsaicin which causes a burning pain. Although it can’t be that of course, but it has to be some kind of
endogenous capsaicin-like compound. Following this aspect and also considering the participation of opioid receptor modulation in disease etiology some interesting links can be found.
As heat effects and capsaicin activates
transient receptor potential vanilloid 1 or TRPV1, this also must be so in this case. Capsaicin is also known to contribute to beta-endorphin release as it serves as an analgesic (pain lowering) and antinociceptive (noxious stimuli (pain, thermal etc.) lowering effect) reaction.
Searching about this I found a study which lists quite a few connection between opioids and TRPV1 which is rather intriguing.
https://www.sciencedirect.com/topics/neuroscience/capsazepine(scroll down to Opioids and TRPV1 Receptors)
What these researchers found:
- Both TRPV1 and opioids are involved in pain modulation.
- TRPV1 and opioids may interact in pain perception and reward.
- TRPV1 knockout mice do not develop thermal and tactile hypersensitivity following sustained morphine administration.
- Capsazepine as a TRPV1 antagonist is able to attenuate both morphine tolerance and dependence signs.
- Capsaicin is able to change the affinity of endogenous opioids such as endomorphin-1 to their receptors.
- Opioids are able to decrease or increase TRPV1 gene expression in the brain and spinal cord.
- Opioids through activation of PKA, PKC, and signaling molecules are able to modulate TRPV1 function.
- TRPV1 receptor antagonist decreased morphine-induced phosphorylation of p38 and NF-kB and increased AC1 in the dorsal striatum of rats.
- The interaction between opioids and TRPV1 opens a new window to clarify some unexplained questions regarding the effects of opioids.I still don’t understand how this all comes together, but these facts must be still at the core of the issue.
This capsaicin-like pain is one of the most permanent symptom and although most evident in acute phase, but an itchiness still lingers in chronic phase and this is why I think that POIS never actually stops, it only becomes weaker. Actually it is quite apparent to me that the strength of the symptoms is quite linear with the actual concentration. So by definition it is much closer to a
self-poisoning (hence the term POIS is quite appropriate) than an escalating allergy. The only thing that deceives us that the greatest release happens suddenly at the moment of O. The burning sensation is most prevalent in the feces, but is often felt during urination too and only sometimes in the semen during ejaculation.
As the itching of the anus is most often linked to parasitic infection this was one of my first suspicion too. To cut it short I had parasitic laboratory tests (both protozoan and helminths) from stool samples five times, but all were negative. I even took antiparasitic medication (Metronidazole) a few times and it did nothing to POIS.
The bacteriological findings were more interesting, but still inconclusive. I had bacterial identification tests from stool for seven times. The tests were usually the day after ejaculation or only a few days after, but still in acute state. So in order:
1st: Aside from normal E. coli count
Klebsiella sp. was present in great number.
2nd:
Normal E.coli were not present altogether. 3rd: Normal flora is present in very small number. Aside from normal E.coli count Klebsiella sp. was in great number. (I think after this I had Cyprofloxacin treatment which is an antibiotic)
4th: Salmonella, Shigella, E.coli O124, Yersinia enterocolitica and Campylobacter were not present. (I think this means a normal finding.),
5th: same as 4th,
6th: same as 4th plus Salmonella Typhi negative, Salmonella Paratyphi negative,
7th: same as 4th (this was a few years later and recently and the only one in the chronic phase).
One would think that Cyprofloxacin solved the problem, but it may not be so. I think I stopped eating whole grain bread somewhere along the way, which intensified POIS to a great degree, so it might be that too. I wanted to use the 7th as reference and do some acute tests with enhancing foods, but the pandemic just came in and I didn’t dare to go to the laboratory. The 2nd test also worth mention. I clearly remember that I did an O the day before, but everything was as usual, so I was not feeling especially unwell. The test also doesn’t necessarily mean that my whole gut flora died off, it might have only been at the rectal region. It seems strange that the supposedly pathogenic Klebsiella sp. couldn’t cope with the environment and also died off. I also don’t think that a normal acute state can easily kill off bacteria as even at the time of the first test I had already had POIS for more than 15 years and I only had more severe diarrhea cases in the first 10 years. Still the conclusion I can draw as of yet that it is indeed a mildly toxic chemical compound that is released and Klebsiella either metabolizes the compound better or is more resistant and dies off harder. Anyhow capsaicin is also known to be able to kill bacteria.
Urine tests are consistently negative in major parameters and no bacteria can be detected even with the burning sensation. The only parameter that is always high is specific gravity (1.030<), but my doctor says it is actually a good thing, although I am not so sure in that regard.
By the way medical examinations found prostate to be completely normal at Urology, anus with mild irritation at Proctology and nothing was abnormal with laparoscopy (2 times) and contrast X-ray intestinal examination at Gastroenterology. Furthermore gastric laparoscopy and abdominal sonography (3 times) found nothing.
To tell you the truth I had done some quite bizarre tests as I felt myself in dire straits, especially as I thought at the time that I was the only one on the whole world suffering from this disease. So one of these was when I put one finger into the anus at the site of the prostate during masturbation. As it turns out right at the moment of ejaculation the whole rectum seems to be engulfed by this capsaicin-like pain. I haven’t tested this extensively, but it seems that sometimes this pain is milder than usual and POIS symptoms are also weaker at the time. I also noticed that after around 7 days at the acute-chronic phase turnover this pain almost disappears and only an itching feeling remains unless I eat some POIS enhancer food which can raise pain and contribute to symptom manifestation (like red eyes). Of course I had a strong suspicion about this as often the pain was so excruciating after O that I was hardly able to wash my ass or was almost unable to defecate just as if I had eaten a whole bucket of extra hot chili pepper which I didn’t. It is also strange that the pain cannot be felt on the inside unless the lumen is touched, which might be the phenomenon of
mechanical allodynia (an aspect of TRPV1).
Another bizarre test I did was to do a kind of enema. I only did this once in acute POIS, but it is apparent, that flushing out stool causes an instant clarity both in vision (blurriness) and thinking (mind fog). Other POIS symptoms also subsided, but these were the most apparent. Unfortunately it doesn’t stop POIS as it starts to build up right away and seems to be the usual by next day. This is no wonder as compound release is up-regulated in acute POIS and only comes down by chronic phase where its level becomes fairly stabilized. I also noticed many times when POIS was intense defecating could bring a sudden clarity both to vision and thinking. This must mean there is an equilibrium in the compound’s concentration between bowel faecal phase and the blood stream. When intestinal concentration drops it lowers in blood too and so symptoms regress, thus it is really a
linear disease.
This also means that this compound is probably a small one as it seems to be able to easily pass the blood-brain barrier (BBB). This compound must have a very low toxicity as it doesn’t seem to do any permanent damage, but its irritating effect is high and can probably disregulate other biological mechanisms.
Now here comes the big question of whether this pain is real or just a perceptual feeling. Of course doctors would say that it is a perceptual phenomenon as hyperalgesia is just the term that seems to define this well. There is actually a kind of
opioid induced hyperalgesia (OIH) that occurs after chronic high dose opiate (like morphine) usage. In this case the normally analgesic effects of opiates turns to hypersensitivity and pain effects become enhanced. This is possibly the reason why consuming poppy seed (opioid alkaloids) enhances the discussed pain effect. As from my point of view POIS is perpetually present even in chronic state so endogenous opioid release must be elevated at the time of O when an even greater compound release which could lead to aforementioned opioid induced hyperalgesia.
Some further information that seems interesting in this regard:
OIH may be more formally defined as increased nociceptive sensitization caused by exposure to opioids.
Spinal dynorphins also may play a role in OIH by increasing the presence of excitatory neuropeptides which can enhance nociceptive input. Also sometimes NMDA antagonists are able to alleviate OIH. Naloxone might intuitively make sense to use for OIH and has been shown in animal studies to help the antinociceptive effects of opioids but do not seem to modulate or reverse the effects of OIH.
Besides pain OIH can cause low mood, short-term memory problems and allodynia.
Animals given repeated systemic or intrathecal boluses of opioids developed progressive hyperalgesia to thermal or mechanical stimuli over the course of several days. Where studied, the time course of resolution of OIH was similar to the time course of its development. Of particular interest is a study by Celerier et al. documenting that animals with normal noxious sensitivity after recovering from OIH expressed recurrent and robust hyperalgesia if challenged with a single bolus of either drug, an opioid agonist or antagonist. These findings have two important implications. First, animals apparently recovered from OIH remained sensitized to the hyperalgesic effects of opioids. Second, this sensitization most likely was opposed by an endogenous opioidergic system, because the injection of an opioid antagonist unmasked hyperalgesia. This implies that OIH resolved because of upregulated inhibitory pathways opposing activity of sensitized excitatory pathways rather than the desensitization of excitatory pathways. According to this concept, resolution of OIH occurred at a new equilibrium of high neuronal activity between excitatory and inhibitory pathways (fig. 1). It is conceivable that an equilibrium achieved at a high level of neuronal activity is prone to derangements, which in a clinical context may translate into increased vulnerability to pain.
Opiate receptor-active peptide fragments (exorphins) were also identified in casein and gluten hydrolysates.https://pubs.asahq.org/anesthesiology/article/104/3/570/8782/Opioid-induced-HyperalgesiaA-Qualitativehttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3550256/https://academic.oup.com/painmedicine/article/16/suppl_1/S32/2472483https://www.uspharmacist.com/article/opioid-induced-hyperalgesia-an-emerging-treatment-challengehttps://casereports.bmj.com/content/2014/bcr-2014-204551https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(19)30430-1/fulltext?rss=yeshttps://link.springer.com/article/10.1007/s12035-019-01650-5So there is a good possibility for OIH, but even capsaicin can lead to “normal” hyperalgesia so it not necessarily the case. I also think that hyperalgesia plays the smaller part (as the cause of IBS symptoms) and a direct chemically induced pain has to be the primary cause.
There are several reasons to it:
- Sudden appearance of pain: Even if there is a change in microbial fermentation it simply can’t be instantenous.
- Bacterial flora can die off or become suppressed. I don’t think the mere feeling of pain would be able to do this unless there was a highly concentrated chemical. It is also unlikely that bacteria would kill itself.
- Charcoal being effective, although it also up-regulates pain effect after a short time.
- Excretion (both stool and urine) reduces symptoms. Stool quality is apparently abnormal (dark (not blood) and sticky) and urine is often frothy.
The most intriguing fact is that capsaicin itself produces a reversible antinociceptive and antiinflammatory action after an initial undesirable algesic (pain causing) effect. This means that it induces nociception at first (TRPV1 activation), but also causes desensitization which leads to antinociception.
Substance P release is up-regulated (
mast cell activator), but it becomes depleted as desensitization occurs.
https://www.sciencedirect.com/science/article/abs/pii/002432059290045Qhttps://www.sciencedirect.com/science/article/abs/pii/S002839080300100XCapsaicin promotes blood flow to tissues by lowering blood pressure and stimulating the release of
nitric oxide and other
vasodilators. Vasodilators are compounds that help expand your blood vessels, allowing blood to flow through more easily.
Heat, humidity, bathing in warm water, or sweating may increase the burning sensation.
Although capsaicin can cause
neurogenic inflammation per se under certain physiologic conditions, it also has analgesic and anti-inflammatory activities.
https://en.wikipedia.org/wiki/Neurogenic_inflammationhttps://www.mdpi.com/2072-6643/8/5/174/htmSome google facts about the effects of capsaicin:
After a few weeks of use, the burning sensation is often less of an issue and deeper pain-relieving benefits grow. Capsaicin appears to reduce a chemical - substance P - that sends pain signals to the brain. It often takes a week or two, therefore, to get maximal benefit.
Capsaicin will also cause a release of SP and calcitonin gene-related peptide (CGRP) from peripheral and central nerve terminals, contributing to the local flare (neurogenic inflammation) [Winter et al.].
The most common reason people sweat when they eat involves spicy foods like peppers. Peppers have a chemical called capsaicin that triggers the nerves that make your body feel warmer, so you sweat to cool it back down.
Capsaicin is more soluble in oil or alcohol than in water, thus they can mobilize it.
Vinegar: Acetic acid neutralizes the alkalinity of capsaicin. Pour it over hands or contaminated skin. It's also safe to soak skin in a mixture of vinegar and water for 15 minutes. Additionally, you can rinse your mouth with vinegar to relieve hot pepper burn.
Capsaicin is not soluble in water, which is why running your hands under cold water probably wouldn't do much for the burn. But the casein protein in milk (or cream, as per grandfather) can grab onto capsaicin and help neutralize it.
Activation of TPRV1 by its specific agonist capsaicin promotes endothelium-dependent vasodilation and subsequently contributes to lower blood pressure.
To be precise as I mentioned at the beginning the initiator compound is not capsaicin, but something similar, so it doesn’t necesserily mean that everything is the same. Although it may be possible that some health benefits of capsaicin might be present even in our ill state like a reduced chance of being obese or getting diabetes and it may even has an anti-cancer property not that it is a happy (also unproven) consequence.
Actually all seems to come down to the terms of
nociception and anti-nociception. Aside from opioid agonists and antagonist the other drugs that seems to modulate (either positively or negatively) POIS state are nociceptive and antinociceptive compounds.
Compounds that have antinociceptive property: capsaicin, testosterone, quercetin, rutin (partly opioid mediated), kaempferol, ?-endorphin, morphine, melatonin (induces ?-endorphin release), taurine (naloxone blocks this effect!), turmeric (curcumin), Piper nigrum (black pepper), Diclofenac, ketamine, magnesium, zinc, apple cider vinegar, niacin and thiamine (their deficiencies can enhance nociception), B-vitamines (especially B1 (thiamine) and B12 (cobalamin)), Citrus limonum (lemon), sulforaphane, some herbs with anti-nociceptive potential (by random search): lemongrass (citronellal) – also a weak capsaicin antagonist, dandelion, Cistus albidus, Lonicera japonica, Polygonum hydropiper leaves, Alkanna sp., Acronychia pedunculata leaves, etc.
Certainly this list seems controversial, but there might be a competitive behavior on TRPV1 activation and desensitization also has to be considered.
https://europepmc.org/article/med/8136733https://journals.sagepub.com/doi/abs/10.1177/0022034509356169https://jpet.aspetjournals.org/content/282/3/1319.shortThe nociceptive and antinociceptive dual effect of ginger seems to be in line with capsaicin, but then why does ginger ameliorate pain while external capsaicin exacerbates it.
https://bpspubs.onlinelibrary.wiley.com/doi/full/10.1111/bph.14766http://naturalingredient.org/wp/wp-content/uploads/51-62.pdfNociceptive compounds: nitric oxide (NO), glutamate, aspartate, lactic acid, carrageenan, prostaglandin E2 (PGE2) and prostaglandin I2 (PGI2), bradykinin, excitatory amino acids (glutamate, aspartate, NMDA etc.)
https://journals.sagepub.com/doi/abs/10.1046/j.1468-2982.1994.1406437.x The effect of serotonin on nociception is especially complicated. Nevertheless 5-HT3 seems to be most implicated receptor subtype and their antagonists (like ondansetron) should also be considered as POIS treatment candidates.
https://psycnet.apa.org/record/1991-23522-001https://www.jpain.org/article/S1526-5900(11)00224-0/abstracthttps://www.jneurosci.org/content/22/3/1010.fullCoffee (chlorogenic acids and related quinides are capable of inhibiting the morphine induced anti-nociceptive behavior)
https://www.researchgate.net/profile/Roseane_Santos3/publication/265124232_Santos_RM_Hunter_T_and_Lima_DR_Coffee_Depression_Alcoholism_and_Drug_Abuse_-_Mini-_review_Austin_J_Pharmacol_Ther_21_6_Jan_2014/links/551d5dcc0cf29a69c99b2df6/Santos-RM-Hunter-T-and-Lima-DR-Coffee-Depression-Alcoholism-and-Drug-Abuse-Mini-review-Austin-J-Pharmacol-Ther-21-6-Jan-2014.pdfCapsaicin also activates substance P (SP) release, which is know to be a release initiator of many other inflammatory compounds like cytokines. Substance P can also control mast cell activation. Some antihistamines (like azelastine or cetirizine) may inhibit Substance P.
https://www.sciencedirect.com/science/article/abs/pii/S0006295200002604https://pubs.asahq.org/anesthesiology/article/116/4/882/13128/Substance-P-Signaling-Controls-Mast-Cellhttps://www.karger.com/article/pdf/234229https://www.sciencedirect.com/science/article/abs/pii/S001429990101617Xhttps://journals.sagepub.com/doi/abs/10.1177/000348940411301201Endovanilloids (EV):Some other endogenous capsaicin-like compounds are
N-arachidonoyl-dopamine (NADA), the endocannabinoid
N-arachidonoylethanolamine (AEA) also called Anandamide, 12-Hydroperoxyeicosatetraenoic acid (12-HPETE) and 15-HPETE and leukotriene B4 (LTB4).
At first I thought that it must be NADA as its characteristics and effects are just what I seek, but then I realized that it only occurs in the brain and not in the intestines or prostate/testicles at least under normal circumstances. However it turns out that anandamide can actually be found in the prostate. Although anandamide has a weaker capsaicin like effect than either capsaicin or NADA, still if it is released in a very large amount it may just be the one responsible for all my ails.
Formerly I also thought about a possibility of AA-5-HT involvement. The interesting thing while they both act on endocannabinoid CB1 receptors they both also act on TRPV1 although NADA is an agonist, but AA-5-HT is an antagonist of TRPV1. Additionally 5 - N-Acyldopamine and N-Acylserotonin may play a role too.
https://en.wikipedia.org/wiki/N-Arachidonoyl_dopaminehttps://en.wikipedia.org/wiki/Anandamidehttps://en.wikipedia.org/wiki/12-Hydroxyeicosatetraenoic_acidhttps://www.liebertpub.com/doi/full/10.1089/can.2017.0015Check Table 2 for N-Arachidonoyl Dopamine Effects
https://www.sciencedirect.com/science/article/abs/pii/S0014299909009601https://www.sciencedirect.com/science/article/pii/S0021925820387937https://journals.physiology.org/doi/full/10.1152/jn.00395.2005https://www.pnas.org/content/99/12/8400.fullhttps://www.pnas.org/content/97/11/6155.fullhttps://www.sciencedirect.com/science/article/pii/B9780124201262000055https://royalsocietypublishing.org/doi/full/10.1098/rstb.2011.0392https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2958632/https://www.frontiersin.org/articles/10.3389/fnmol.2017.00152/fullAnandamide (AEA)Whereas NADA is similar in potency to capsaicin in a variety of assays of VR1 activity, anandamide and 12-HPETE are at least 20-fold less potent than capsaicin.
All of the putative endovanilloids identified to date are products of arachidonic acid, an unsaturated long chain fatty acid with a primary role in inflammation and pain.
https://www.sciencedirect.com/science/article/pii/S0021925819645011Ethanolamine can greatly increase anandamide biosynthesis in rat testes.
https://www.sciencedirect.com/science/article/abs/pii/S0009308497001096Genes encoding for FAAH1 and FAAH2 are highly expressed in the human seminal vesicles (SV) and Vas deferens (VD).
https://www.auajournals.org/doi/10.1016/j.juro.2018.02.1409FAAH were detected in the human prostate.
https://www.auajournals.org/doi/10.1016/j.juro.2014.02.530Studies have broadly demonstrated the presence of cannabinoid receptors on sperm.
Cannabis reduces sperm count.
Cannabis causes morphological changes in sperm, but genetic material is preserved.
Cannabis can reduce sperm motility. (I think that it was indicated in the South-Korean case study.)
Effects of THC were more pronounced in washed sperm than in neat semen, suggesting that seminal plasma contains some protective factors.
The CB1 receptor antagonist rimonabant induced a small but significant increase in the number of viable spermatozoa.
Research suggests that the cannabinoid signaling pathway may be involved in inhibiting sperm capacitation and activation. Using high performance liquid chromatography Schuel et al observed that high levels of AEA are present in seminal plasma and in progressively decreasing amounts in oviductal and follicular fluid, indicating that sperm are exposed to progressively decreasing AEA levels along the entire fertilization path. The authors speculated that high AEA levels maintain sperm in a quiescent state and the decrease in AEA levels which occurs in the fertilization environment enables sperm to become activated. These data suggest that increases in cannabinoid levels may interfere with sperm activation and may be especially pertinent in the female reproductive tract, which the sperm depend on for tightly regulated AEA levels to maintain proper function.This is actually the perfect evidence that an anandamide (AEA) overproduction is the cause of POIS (maybe not for all). As to why AEA production is so high I don’t really know, but it might have to do something with cannabinoid receptor sensitization. A doctor should really be asked about these facts, I can only do self-diagnostics as I don’t have one.
FSH may not be affected by cannabis except perhaps in the limited case of heavy chronic use.
In human and animal models LH is consistently lowered by cannabis.
The reported effect of cannabis on serum testosterone levels is widely variable across current studies. In an early work in 20 chronic marijuana users Kolodny et al found a significant reduction in testosterone levels between chronic and never marijuana users (p <0.001).12 The average plasma testosterone level in the control group was 742 ± 29 ng/ml, while levels were 503 ± 40 and 309 ± 34 ng/ml in the 5 to 9 and the 10 or more marijuana cigarettes a week groups, respectively (p <0.005).https://www.auajournals.org/doi/10.1097/JU.0000000000000248I wanted to suggest that some cannabinoid antagonists like rimonabant should be tried (applying it to the prostate as the problem is probably not systemic, but who knows), but it turns out that it has been banned. Interestingly and unexpectedly it also caused very similar problems as ours, namely flu-like symptoms which only adds to the mystery.
https://en.wikipedia.org/wiki/RimonabantA diet deficient of essential fatty acids induced a reduction of anandamide in several organs.
https://www.sciencedirect.com/science/article/abs/pii/S0952327819301322Increasing the relative proportion of n–3 LC?PUFAs (ALA, EPA, DHA) in the diet can lead to a decrease in the formation of the ‘prototypic’ endocannabinoids anandamide (AEA) and 2?AG.
https://bpspubs.onlinelibrary.wiley.com/doi/full/10.1111/bph.12030Anandamide seems to be involved in runner’s high. Well it seems that for me having a nocturnal emission is more than running a marathon.
https://en.wikipedia.org/wiki/Neurobiological_effects_of_physical_exercise#EuphoriaAs fatty acid amide hydrolase or FAAH breaks down anandamide, it is possible that this enzyme has some kind of problem, but I think the problem is rather on the production part. Unfortunately it seems there are only FAAH inhibitor medicines, but there are no word of FAAH agonists.
https://en.wikipedia.org/wiki/Fatty_acid_amide_hydrolaseIt would be logical to think that there is a serious problem with anandamide transport, but it is not even known if anandamide has a transporter or if it only passively diffuses through cell membranes.
https://www.sciencedirect.com/science/article/abs/pii/S0024320505004832Anandamide can modulate endogenous opioid levels through a not yet known endogenous opioid (maybe dynorphin A).
It might be that actually this opioid causes the OIH.
https://www.sciencedirect.com/science/article/abs/pii/S0091305797005832Anandamide can interact with kappa opioid receptor system and its effect can be blocked by mu and kappa opioid antagonists.
https://www.sciencedirect.com/science/article/abs/pii/S0014299908008741Anandamide can ameliorate opioid withdrawal symptoms. It might be because it actually increases the release or maybe it enhances the antinociceptive properties of other endogenous opioids. It might have relevance for those POISers for whom THC, CBD actually works.
https://www.sciencedirect.com/science/article/abs/pii/0028390895000322The synergistic effect of cannabinoid and morphine can actually lead to dynorphin A release.
https://www.researchgate.net/profile/Ercan_Ozdemir2/publication/282041409_The_effects_of_endocannabinoid_receptor_agonist_anandamide_and_antagonist_rimonabant_on_opioid_analgesia_and_tolerance_in_rats/links/5606457408aea25fce345a79/The-effects-of-endocannabinoid-receptor-agonist-anandamide-and-antagonist-rimonabant-on-opioid-analgesia-and-tolerance-in-rats.pdfParacetamol (called acetaminophen in the US and Canada) is metabolically combined with arachidonic acid by FAAH to form AM404. This is an inhibitor of anandamide reuptake and leads to elevated anandamide levels. I haven’t taken paracetamol as I have Gilbert disease and I was told not to. It seems a prudent advice as it could really enhance my problems.
https://en.wikipedia.org/wiki/AnandamideAEA can cause antinociception (capsaicin-like), hypothermia, and hypomotility, furthermore tolerance and withdrawal.
https://www.nature.com/articles/npp201044The suppression of n-6 PUFA-derived eicosanoid production by n-3 PUFA may be caused by their competition for a common enzyme in the eicosanoid biosynthetic pathway, ?6-desaturase. Also, EPA, through its mono- and trihydroxy-derivatives, decreases the production of proinflammatory cytokines (e.g.IL-1?, TNF-?). Consequently, EPA-derived eicosanoids are considered to be less inflammatory potent than those derived from AA, and this is one of the main reasons that fish oil (containing EPA but also DHA) has been characterised as having antiinflammatory properties.
Products of non-enzymatic oxidation of AA and other 20 carbon atom FA (isoprostanes) are used as surrogate markers of oxidative stress.https://biomed.papers.upol.cz/pdfs/bio/2011/03/01.pdfThe uptake of AEA into cells is unique in that its uptake is coupled to its breakdown by the catabolic enzyme FAAH located at the endoplasmic reticulum (Figure ?(Figure2).2). Uptake rates in different cells are generally correlated with inherent FAAH concentration and the rate increases further with transfection of FAAH (Day et al., 2001; Deutsch et al., 2001). Conversely, uptake rates are generally negatively correlated with the degree of FAAH inhibition, although in some cells other catabolic enzymes and their inhibitors may play a role, such as COX-2 and NAAA (Fowler et al., 2004, 2013; Glaser et al., 2005; Hillard and Jarrahian, 2005). FAAH removes AEA from inside the cell, disrupting the equilibrium between inside and outside the cell, generating a concentration gradient that drives uptake.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5062061/More about AEA synthesis and breakdown:
https://www.nature.com/articles/4401284https://www.sciencedirect.com/science/article/abs/pii/S0952327801903564It can be concluded that sex hormones down?regulate FAAH activity by reducing gene expression at the level of protein synthesis. This is a demonstration of a direct interplay between endocannabinoid degradation and sex hormones in mammals. Also anandamide synthase activity was measured in mouse uterus, and was found to respond to sex hormones in the same way as FAAH. Although it is still under debate whether or not anandamide hydrolase and synthase activities belong to the same or different enzymes, these data demonstrate that the two activities are under the same hormonal control.https://febs.onlinelibrary.wiley.com/doi/full/10.1046/j.1432-1033.2000.01316.xAEA may not modulate ethanol consumption, but I still don’t like it.
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1460-9568.2007.05665.xThe endocannabinoid system (ECS) is a well-recognized effector of human energy homeostasis, and its dysregulation has been implicated in metabolic diseases.
Skeletal muscle anandamide (AEA) and 2-arachidonoylglycerol (2-AG) are important determinants of daily energy expenditure (EE) in humans, explaining a large amount of the interindividual variance in EE, particularly sleeping energy expenditure (SLEEP).
https://academic.oup.com/jcem/article/103/10/3757/5063487?login=trueAEA can modulate acetylcholine release.
https://bpspubs.onlinelibrary.wiley.com/doi/full/10.1038/sj.bjp.0704220The case of the Scottish woman who has FAAH-OUT seems interesting as she also has high AEA levels. Interestingly she only has a few similar symptoms like forgetting things midway and having an adverse reaction to morphine, but not to paracetamol. She doesn’t seem to have any brain fog, muscle fatigue or flue like symptoms. This may not be in line with the above, but I still believe there is an explanation for this. AEA may be high in both cases, but as FAAH is probably present in me it also breaks down rapidly. I haven’t had time to read everything about this, but it may be that the breakdown products have an even greater significance. The localization is also specific to the rectal region and intestine and probably it is what drives disbaceriosis (disfermentation) and leads to butyrate equilibrium imbalance.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6676009/And probably many more connections can be found, but I wanted to share this as soon as possible so you can check out for yourselves. I also haven’t had time to read up on the other POIS types, but even if it is not AEA you may still find some connection.
The following was written beforehand, but still might hold some importance.
N-Arachidonoyl Taurine (NAT) also acts like an endogenous capsaicin analog and it may have relevance for those POISers for whom taurine works. For me it doesn’t seem to work so far, but I have only tested it a few times and with smaller amounts.
“Moreover, activation by the endogenous activator N-arachidonoyl taurine (NAT), induced similar effects as capsaicin. On the other hand, taurine, the decomposition product of NAT, strongly depressed the evoked glutamatergic synaptic transmission.”https://www.frontiersin.org/articles/10.3389/fnins.2020.00091/fullBradykinin acting through B2 receptor is also a potent activator of TRPV1.
As autoantibodies are a possibility in our disease it may be that such an antibody could have a capsaicin-like property, although I couldn’t find any studies that would back up such a claim.
Cytokine and chemokine release is usually a consequence of TRPV1 activation and not the other way around, but some chemokines seem to be able to activate the vanilloid receptor so they deserve consideration.
https://link.springer.com/chapter/10.1007%2F3-7643-7423-3_9There is still a possibility for lactic acid involvement too. Taking Lactobacillus probiotics, lactulose (although lactose intolerance negative), having muscle-fever due to excessive physical exercise (especially sit-ups) all seem to enhance this kind of burning pain. Eating wholegrain bread also enhances this burning, but it can’t be gluten as normal bread doesn’t have this effect and it might be that SCFAs production is up-regulated. Many fruits with a high ester content also enhances it. Sweet paprika is the most perplexing as it doesn’t contain capsaicin, but still results in a severe capsaicin-like pain and POIS symptom aggravation. If it is a psychogenic pain as my psychiatrist always says then it has to be my intestinal neurons who believe it is capsaicin as my mind certainly doesn’t.
Another disease that somewhat resembles POIS:
https://en.wikipedia.org/wiki/Cannabinoid_hyperemesis_syndromeI have accidentally run into chronic nonbacterial prostatitis (chronic pelvic pain syndrome) and then realized that it is also often mentioned on this site. My theory and experiences seem to be well in line with this syndrome. The study I found first is actually about capsaicin induced prostatitis and the changes it induces in prostatic cannabinoid receptors.
https://www.health.harvard.edu/newsletter_article/chronic-nonbacterial-prostatitis-chronic-pelvic-pain-syndromehttps://www.auajournals.org/doi/full/10.1016/j.juro.2016.02.1648As I final note I have to wonder if the up-regulation of a similar capsaicin-like compound plays a role in other similar diseases like ME/CFS or postcovid. The same compound’s release at an other bodypart might also result in a different manifestation. It might still be the reason why similar medicines work.
N-Acetylserotonin – NAS (a member of N-Acylserotonines) involvement is also indicated in orthostatic hypotension.
https://en.wikipedia.org/wiki/N-AcetylserotoninAmong others N-acetyl-tryptophan can be high in COVID-19 patients, but it is due to the disruption of tryptophan metabolism.
https://www.atsjournals.org/doi/full/10.1165/rcmb.2020-0206LESome theoretically (not proven) recommended supplementation during covid-19 based on (metabol/prote)omics: tryptophan, arginine, glutamin.
https://www.in.jpnim.com/index.php/jpnim/article/view/e100145/746(you can safely bypass the warning)
It may not have any relevance, but here is a study that details the connection between prostate cancer and COVID-19.
https://www.nature.com/articles/s42003-020-1088-9?elqTrackId=eecce2f1a1ee4a3c9abf199c258e7795Arachidonic acid (a metabolite of AEA) seems to be protective in COVID-19 and might be the link why testosterone works for us through ACE2 regulation.
https://www.sciencedirect.com/science/article/abs/pii/S0188440920312637?via%3DihubThere are many more metabolomic changes in COVID-19, although it doesn’t necessarily reflect the postcovid state. Still some compound changes are similar to CFS metabolic changes like a decrease in spingolipids.
https://www.cell.com/cell/fulltext/S0092-8674(20)30627-9?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0092867420306279%3Fshowall%3DtrueMetabolomics in CFS:
https://link.springer.com/content/pdf/10.1186/s12967-020-02356-2.pdfhttps://www.mdpi.com/2218-1989/10/1/34/htmhttps://www.nature.com/articles/srep34990https://www.nature.com/articles/s41598-018-28477-9https://www.pnas.org/content/113/37/E5472/tab-figures-dataCheck out table 5. It is rather apparent that CFS values are in stark contrast with metabolic syndrome (related to diabetes).
I think a similar
metabolomic and proteomic study in POIS could at least identify this capsaicin-like compound even if it didn’t solve its origin.
I think researchers should care more about our disease and not because we really matter, but rather because it would greatly help uncovering the connections between sexual activity and the human metabolism.