JaSon2233 said...
DCD,
I forgot to answer ab how my neuro symptoms 'came on.'
In short it was a very slow progression, but then a sudden onset of more severe symptpms.
I had chronic insomnia, migraines, and internal vibrations since around the age of 5.
I was a very good student and excelled in school in highschool, but my migraines got worse.
Then in college I developed memory problems and an ADHD like presentation. Then mild-moderate depression. And very severe hangovers to alchohol that would leave me depressed and cognitively impaired for days.
Those types of symptoms persisted and worsened until age of 30. Then I began having recurrent flu-like symptoms, which I ignored for about a year. Also more severe fatigue and cognitive impairments - like trouble following movie plots and reading books.
Then at age 31 I got struck down. I was sitting in a Panera bread about to do work from my computer and I suddenly became very fatigued, depressed, anxious, and disoriented. I also developed severe exercise intolerance that seemed related to my brain rather than my body. And that state has persisted ever since and flared when on abx and worsened since taking long term claritho rifampin when my movement disorder began (myoclonic jerks, occasional convulsive type stuff, coordination problems, feeling like my brain is dissconnected from my body).
Yea some sort of encephalitis/autoimmune phenomena. Sounds kinda similar to me in how it came on "slowly, then all at once".
I wanted to point out, with dosing on IVIG, 1g/kg/month may not be enough.
I've spent a lot of time around this stuff. When I talk to people who IVIG doesnt make a difference for, they're
always on 1g/kg (per month). The people who get materially better almost always seem to be on 1.5-2g/kg. At least for neuropathy. Encephalitis may be the same. I have no idea who did these freaking studies, but the 1g/kg is often inadquate. If you're not making enough progress ask to go up before you decide it doesnt work.
IVIG is dose dependent. The way it works is that once the Fab portion of an antibody binds to an antigen, the complement c1q binds to the Fc receptor of the antibody and activates the complement cascade, which releases various cytokines and can activate the MAC (membrane attack complex).
But if you pump your body full of IgG, the IgGs start binding to each other in Fc-Fc receptor bonds. I think the body does this to "shunt" too much IgG is my guess (if you're making tons of it, there's probably a problem). But once the Fc receptor is bound, the antibody can't be activated. This ONLY happens at high doses. That's why dosage is very important.
This is why IVIG really is quite magnificent. Because the donor IgGs neutralize many of your bad IgGs. At the same time, you're left w/ a ton of donor IgG for immune protection. It's the only treatment that's "immunomodulatory" and supportive at the same time. W/ any other treatment you're going to be suppressing something and having weakened immune function, but w/ IVIG you have strengthened.
Some people are on a dose for immunodeficiency and theyre like "oh well I dont feel it for my autoimmune". It's a completely different animal at that dosage. And for some people 1g/kg isnt enough. The standard starting dose really should be 1.5 imho w/ the option to go up to 2.
There are a few other mechanisms by which IVIG works...it works directly on complement they think and may have some effect on cytokines they dont understand.
Argenyx is finishing up phase 3 trials of Efgartigimod. I've been following this drug for 3 years. It's IVIG on steroids. It blocks the Fc receptor just like IVIG does, except it's much more efficient and specifically designed to do that very quickly. It knocks disease out in a matter of weeks. Problem is, you end up w the immunosuppression. But it's still a game changer, too bad its probably gonna cost $300k/year
Post Edited (dcd2103) : 1/26/2022 8:02:33 PM (GMT-7)