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Rapamycin / Sirolimus for ME / CFS and Central Sensitization

Hoosierfans

Senior Member
Messages
400
Hey all — long time PR member and ME / CFS sufferer here.

I’m starting this thread to document my experience with Rapamycin / Sirolimus. Yes, I have ME / CFS (and Rapa has been discussed and tested here before), however I have some comorbid conditions that make me a *bit* unique.

I have post viral onset (mono 2006), which relapsed and remitted until I had my second child in late 2010. Since then, my health has been on the decline to the point that where I am severe (mostly bed and housebound). The unique symptom experience I have, which I’ve not seen mentioned here much, is an intense sunburn like pain all over my arms, legs and face. It also feels like it’s in my brain, and it’s 24/7. I have POTS as well, although it’s more on the side of pure OI / hypotension.

There’s a lot more to my story — what I’ve tried, what hasn’t worked (and why) but for now, I wanted to document what led me to Rapamycin in case others have similar test results / patterns:

— Severe anxiety / fight or flight mode and suicidal depression. These, along with the pain, led me to ketamine treatment. Which led me to research showing that Rapamycin extends the anti- depressant effect of ketamine.

https://www.nature.com/articles/s41386-020-0644-9

— while researching CRPS and central sensitization (likely the driver of my pain), I came across a recent case report of a woman whose CRPS and fatigue was DRASTICALLY improved when her docs added Rapamycin:

https://www.cureus.com/articles/166...eatment-for-complex-regional-pain-syndrome#!/

— Indeed, overactive mTOR is crucial in the maintenance of chronic pain: https://www.hindawi.com/journals/bmri/2015/394257/

—. For reasons discussed below, researchers are looking at overactive mTOR being a driver in ME / CFS:

Through PR posts and a lot of Dr Google, here’s what I could find on mTOR and why it may apply in my particular case (lab results / symptoms).

GENERAL:
Rapamycin is an mTOR inhibitor that is most often used in transplant cases. However, its being studied in all sorts of chronic diseases and neurodegenerative diseases at doses much lower than used in transplant cases. Like all things immune related, amplifiying mTOR all the time or decreasing mTOR all the time isn’t desirable.

When mTOR is active, it generally inhibits autophagy. By blocking mTOR, rapamycin encourages autophagy and thus “clears out” “dirty” mitochondria. This is the main hypothesis for using it in ME / CFS. Dysregulation of mTOR also messes with metabolism (diabetes) and may lead to misfiled and aggregated proteins in neuro disorders. As a result, rapamycin is being studied in Alzheimer’s, Parkinson’s etc. Rapamycin inhibits TNF-A, IL-!b and IL-6. It also reduces microglial expression and in so doing reduces neuroinflammation and neuro excitation. Interestingly, it also increases cerebral blood flow (yay), and restores the blood brain barrier (double yay) by normalizing and improving cerebral vasculature. (I have a host of neurological symptoms).

PAIN: In pain conditions, there is evidence that overactivated mTOR is responsible for maintaining chronic pain states. There are a few studies of using rapamycin in pain conditions (mostly rat studies of RA, Lupus, MS) where it was found useful. In one study of Rheumatoid arthritis, human patients took .5 mg every 2 days for 6 months. 50% of patients reduces or eliminated their disease. It’s also been used successfully in Lupus.

ME / CFS: The antectodal evidence in the ME / CFS community is that it tends to be helpful for those folks that have some sort of autoimmune process going on. Although rheumatologists have dismissed them, I have positive Cunningham antibodies and Cell Trend antibodies — importantly on those tests I have high levels of AT1R and ETAR antibodies, which cause microvascular endothelial cells to lose their wound healing ability. I found one study where Rapamycin restored this wound healing ability in folks with those antibodies. It seems to help with brain fog, energy levels and stability of CNS symptoms in those for whom it works.

The work of the folks at Simmaron Research is on ATG13, which is upregulated in ME / CFS patients serum. Upregulated ATG13 leads to overactive microglial cells, excessive reactive oxygen species (ROS) which damage mitochondria, and excess iNOS and Nitric Oxide, which leads to problems with hypotension, orthostatic intolerance and POTS. And, importantly, it also blocks autophagy.

TESTING: From what I’ve read, there’s no commercially available test to tell us whether mTOR is overactive and thereby I would benefit from rapamycin. In my particular case, I took at look at any abnormal lab markers I’ve had to see if they have any connection to mTOR. Of note, I have extremely high levels of leucine (the amino acid). Leucine is a major trigger for mTOR to be overactive. In addition, high VEG-F levels (I’m consistently high) can also be caused by high mTOR (vascular proliferation). Lastly, CCL5 (RANTES) is high on my cytokine panel, in addition to TNF-a, IL-6 and IL-1B. Lastly, I have certain antibodies (noted above) that may be involved in triggering mTOR.

mTOR is known to be hijacked by viruses, in order to let viruses proliferate and survive. So viral testing might be helpful to determine if someone might benefit from Rapamycin. I haven’t had viral testing done lately, but will be doing a panel shortly and monitoring titers as my Rapamycin experiment progresses.

DOSING: Consistent with experience here, I’ll be trialing 1 mg 2 x week and moving up 1 mg each of those days each week, to a maximum of 3 mg 2 x week. I’m fortunate in that I have a PCP who will let me experiment with dose timing to see what might work best.

We may also trial a dose of 6 mg prior to a ketamine infusion to see what effect that may have.

Hope this provides some with additional info regarding mTOR. There are folks on this forum with vastly more scientific knowledge than I, but hopefully this provides some basic information and framework that is “brain fog” friendly. All of this information was what I provided to my PCP in order to foster the discussion of a Rapamycin trial.
 

pattismith

Senior Member
Messages
3,947
Do you mean you will trial 1 mg twice a week?

I wish to warn you I had liver toxicity when I raise the level at 4 mg once a week.
 

Hoosierfans

Senior Member
Messages
400
Do you mean you will trial 1 mg twice a week?

I wish to warn you I had liver toxicity when I raise the level at 4 mg once a week.

Thanks for the warning. My doc is doing routine blood work just to make sure we don’t run into any issues, or if we do that we catch them.

We are starting w 1 mg 2 x week for 1 week. Then will move up to 2 mg 2 x week for 1-2 weeks and assess how things are going. Depending on reaction, symptom improvement etc we may move up to 3 mg 2 x week. That’s *probably* as high as we would go.

The CRPS case study is a super interesting one because CRPS is similar to what I have (central sensitization). The patient there improved on 1 mg / day, then moved up to 2 mg / day and finally 3 mg / day. That is immune suppressing dosing which carries high risk. So my doc and I are not contemplating that I would ever go that high…but if I did then we would bring in an immune specialist.
 

SlamDancin

Senior Member
Messages
556
I was one of those who tried Rapamycin a few years ago and it either did nothing or made me worse, it was hard to tell because I was already so sick.

I want to warn you and others that my reading of mTOR is that it’s chronic activation may in some cases be compensatory and protective, and if that’s the case, Rapamycin will increase ER stress and further degrade health. It’s really not known if mTOR should be inhibited in me/Cfs. Please be careful with this everyone
 
Messages
17
I was one of those who tried Rapamycin a few years ago and it either did nothing or made me worse, it was hard to tell because I was already so sick.

I want to warn you and others that my reading of mTOR is that it’s chronic activation may in some cases be compensatory and protective, and if that’s the case, Rapamycin will increase ER stress and further degrade health. It’s really not known if mTOR should be inhibited in me/Cfs. Please be careful with this everyone
Rapamycin reduces ER Stress
 

Hoosierfans

Senior Member
Messages
400
@SlamDancin thank you for the warning. Yes, absolutely. This is not a drug that should be taken lightly or without a doctors supervision.

As you can see, my situation is a bit particular and my PCP and I only came to Rapamycin because of some particular markers (antibodies, VEG-F high, high leucine and metabolites — apparently I don’t metabolize leucine, high MMP-9, and some other inflammatory markers) AND symptoms — probably most importantly the combination of hypotension and chronic burning pain. So my situation appears to be autoimmune (or maybe a simmering virus) along with central sensitization that causes chronic intractable pain. So I totally agree — whether Rapamycin is appropriate in ME / CFS, where that is the “only” issue, isn’t known yet and *my* situation may be different than others.

@Anish04 — sorry I’m unfamiliar with that term. What is “ER stress”? Thanks!!
 
Messages
17
@SlamDancin thank you for the warning. Yes, absolutely. This is not a drug that should be taken lightly or without a doctors supervision.

As you can see, my situation is a bit particular and my PCP and I only came to Rapamycin because of some particular markers (antibodies, VEG-F high, high leucine and metabolites — apparently I don’t metabolize leucine, high MMP-9, and some other inflammatory markers) AND symptoms — probably most importantly the combination of hypotension and chronic burning pain. So my situation appears to be autoimmune (or maybe a simmering virus) along with central sensitization that causes chronic intractable pain. So I totally agree — whether Rapamycin is appropriate in ME / CFS, where that is the “only” issue, isn’t known yet and *my* situation may be different than others.

@Anish04 — sorry I’m unfamiliar with that term. What is “ER stress”? Thanks!!
Endoplasmic reticulum Stress is called shortly as ER STRESS. which is probably hypothesized as symptoms behind CFS/ME.you can search. And rapamycin, metformin, TUDCA all reduces ER STRESS. and all has been used with some success
 

SlamDancin

Senior Member
Messages
556
Rapamycin reduces ER Stress
Thanks for your uncited correction. That is most definitely not always the case, as I said.

“Pharmacological inhibition of mTORC1 increased cell death during ER stress, indicating that the mTORC1 pathway serves adaptive functions during ER stress in cardiomyocytes potentially by controlling the expression of protective unfolded protein response genes.”

mTORC1 inhibition impairs activation of the unfolded protein response and induces cell death during ER stress in cardiomyocytes
 

Hoosierfans

Senior Member
Messages
400
Thanks all for your input. I think part of the difficulty is that mTOR itself serves a purpose. It’s not something we always want turned on, or always turned off. And it’s not good if chronically under active or chronically overactive.

For example, since part of my illness is severe, treatment resistant depression, I looked into mTOR in depression. And unfortunately researchers believe that chronic under active mTOR causes depression. But so does chronic overactive mTOR activation. 🤷🏻‍♀️. So then as a person w TRD, what do I do? Since there is no test, all I can do is experiment with mTOR enhancers and see how I react and also mTOR blockers and see how my body responds.

It’s frustrating but that’s where we are at. But one thing I think IS clear is that it’s not desirable to block mTOR completely and all the time…even if there is a chronic overactivation. Thus, why it’s important to pulse dose unless there is some clear diagnosis that merits continuous dosing (ie SLE or cancer dx).
 

SlamDancin

Senior Member
Messages
556
@Hoosierfans Understood. I am not trying to dissuade you from your trial of Rapa, and of course it’s doc supervised and I’m not a doctor. I just want to point out though that mTOR is over/underactivated (at least in some cell types) in so many illnesses because of its central position as the nexus between metabolism and the immune system. I don’t think it’s clear yet that this means mTOR should be the major point of treating these diseases, and I was trying to show you that without knowing whether it’s compensatory or not attacking at the point of mTOR may make things worse. Also, as far as I remember, the people who tried Rapa here had no success in the end. However I hope that’s different for you hoosiersfan
 

Hoosierfans

Senior Member
Messages
400
@Hoosierfans Understood. I am not trying to dissuade you from your trial of Rapa, and of course it’s doc supervised and I’m not a doctor. I just want to point out though that mTOR is over/underactivated (at least in some cell types) in so many illnesses because of its central position as the nexus between metabolism and the immune system. I don’t think it’s clear yet that this means mTOR should be the major point of treating these diseases, and I was trying to show you that without knowing whether it’s compensatory or not attacking at the point of mTOR may make things worse. Also, as far as I remember, the people who tried Rapa here had no success in the end. However I hope that’s different for you hoosiersfan
No, I hear you. And agree it’s not clear whether mTOR should be the pressure point in treating these diseases. And yep, there are definite risks in trying the Rapa.

From what I read on here and other forums (including the Reddit, the comments on Cort’s blog etc) the response to Rapa was mixed. There were some that benefitted, and many who did not. Again, in my case we are trialing it not ONLY bc of my me/CFS, but also my pain condition and TRD.

I’ll report back as my experiment continues. 👍🏻
 
Messages
17
No, I hear you. And agree it’s not clear whether mTOR should be the pressure point in treating these diseases. And yep, there are definite risks in trying the Rapa.

From what I read on here and other forums (including the Reddit, the comments on Cort’s blog etc) the response to Rapa was mixed. There were some that benefitted, and many who did not. Again, in my case we are trialing it not ONLY bc of my me/CFS, but also my pain condition and TRD.

I’ll report back as my experiment continues. 👍🏻
What dose you are experimenting with? I am experimenting with 1 mg daily
 

Hoosierfans

Senior Member
Messages
400
What dose you are experimenting with? I am experimenting with 1 mg daily
The plan is do to:
Week 1: 1 mg 2 x week
Week 2: 2 mg 2 x week
Week 3: 3 mg 2 x week
Depending on reactions, symptoms etc.

How are you feeling on 1 mg daily???
 

Hoosierfans

Senior Member
Messages
400
Thought I would update this thread. My Rapa experiment has come to an end and I don’t appear to be a responder.

I had an odd reaction — first dose of 1 mg made a distinct difference in my symptoms — so much that I drove for the first time in probably 6 months, and did that over a couple of days. I was able to watch tv with my family, my anxiety lifted.

And right about 3 days post, all my symptoms returned. Subsequent doses of 1 mg didn’t produce that effect, and moving up to 2 didn’t help. It was hard to tell, but it may have made my depression a bit worse. We went back down to 1 mg every 3 days and I couldn’t recapture what happened with the first dose and no other improvements were seen. So, we’ve decided to discontinue it.

It didn’t seem to cause major side effects (and I’m a sensitive patient), so I may revisit it in the future after we make a run at knocking down viruses and / or plasmapheresis.