JP.MOTM said:
Calm Logic said:
For autoimmune conditions such as RA, the first candidate that springs to mind for experimental use is TA1, though it may be too experimental:
View attachment 8708
Thymosin Alpha 1: View Uses, Side Effects and Medicines - MrMed
Belonging to the synthetic thymic peptides, Thymosin Alpha 1 is an anticancer medicine. In chronic hepatitis B and C it is given as an adjuvant therapy.
Image unavailable
www.mrmed.in
This medicine may stimulate the immune system, which could exacerbate autoimmune diseases such as multiple sclerosis, lupus, or rheumatoid arthritis.
Click to expand...
MOGAD makes it look even shakier:
Gemini said:
Because MOGAD is an antibody-mediated attack on the myelin sheath, "immune boosting" agents—often claimed to be the benefit of peptides like Thymosin Alpha-1—could theoretically increase the production of the very autoantibodies driving the disease.
Click to expand...
Racin4t said:
Calm Logic said:
For autoimmune conditions such as RA, the first candidate that springs to mind for experimental use is TA1, though it may be too experimental:
View attachment 8708
Thymosin Alpha 1: View Uses, Side Effects and Medicines - MrMed
Belonging to the synthetic thymic peptides, Thymosin Alpha 1 is an anticancer medicine. In chronic hepatitis B and C it is given as an adjuvant therapy.
Image unavailable
www.mrmed.in
This medicine may stimulate the immune system, which could exacerbate autoimmune diseases such as multiple sclerosis, lupus, or rheumatoid arthritis.
Click to expand...
MOGAD makes it look even shakier:
Gemini said:
Because MOGAD is an antibody-mediated attack on the myelin sheath, "immune boosting" agents—often claimed to be the benefit of peptides like Thymosin Alpha-1—could theoretically increase the production of the very autoantibodies driving the disease.
Click to expand...
This! That particular risk is why TA1 holds very little appeal for me. I have read a little about it, mind you. It is not ruled out entirely - I simply need to study TA1 a great deal more before starting my own research.
Calm Logic said:
For autoimmune conditions such as RA, the first candidate that springs to mind for experimental use is TA1, though it may be too experimental:
View attachment 8708
Thymosin Alpha 1: View Uses, Side Effects and Medicines - MrMed
Belonging to the synthetic thymic peptides, Thymosin Alpha 1 is an anticancer medicine. In chronic hepatitis B and C it is given as an adjuvant therapy.
Image unavailable
www.mrmed.in
This medicine may stimulate the immune system, which could exacerbate autoimmune diseases such as multiple sclerosis, lupus, or rheumatoid arthritis.
Click to expand...
MOGAD makes it look even shakier:
Gemini said:
Because MOGAD is an antibody-mediated attack on the myelin sheath, "immune boosting" agents—often claimed to be the benefit of peptides like Thymosin Alpha-1—could theoretically increase the production of the very autoantibodies driving the disease.
Click to expand...
A little reading on TA 1 was enough to put me off it pretty quickly, this risk being the reason. Perhaps the upside ends up justifying the danger, but far more digging is needed on my part before any research process with TA1 gets under way.
There is nothing unreasonable about either worry, and I had that same question myself: would this simply make autoimmune problems worse? To my mind it is a fascinating subject and one I have gone into quite deeply. Plenty of the writing amounts to speculation about mechanisms, or straightforward observations, yet the picture becomes more comforting the further into it you go (though it is not a completely settled matter).
Parts of the immune system do get "boosted" by TA1 in the published work. Vaccine antibody responses and Th1 immunity can both be strengthened, which makes the worry about autoimmunity-linked antibodies entirely legitimate. A fair question. What the evidence indicates, though, is that this does not happen - and there is considerably more evidence here than I had assumed.
A simple immune "booster" is not what TA1 looks like. It behaves far more like a regulator. Context decides which parts of immunity get turned up or down, and interestingly both can happen simultaneously. On the mechanism side, the selfsame TLR9 signal that drives antiviral and anti-tumour immunity is also capable of switching on tolerance pathways through IDO, IL-10 and regulatory T-cells. Plainly put, the accelerator is not the only pedal it presses. It also looks like it helps reset the immune system, quietening attacks that ought not to occur.
Nowhere is that clearer than in the multiple sclerosis work. MS involves B-cells, yet "B-cells" are not one uniform population. Some of them help hold autoimmune inflammation on; others are regulatory and act to calm the immune response. Those calming regulatory B-cells look too few in relapsing-remitting MS. When TA1 was added to immune cells from such patients, the underactive regulatory population expanded and calming signals such as IL-10 and IL-35 rose, while "bad" inflammatory signals including IFN-gamma and IL-17 fell. TA1 also reduced the capacity of B-cells to turn into IgM- or IgG-secreting cells, which points away from antibody production rather than towards it. What TA1 was doing was restoring balance, bringing the "bad" response down and the "good" response up at once.
An autoimmune-like model of gut inflammation displays the same broad pattern. Colitis triggered by cancer immunotherapy in mice was held off by TA1, which switched on an IDO-dependent tolerance pathway and protected the gut. Taken with the mechanism, the MS findings and the colitis model, everything therefore points at regulation and recalibration rather than an autoimmune boost.
Calling it "proven safe in every autoimmune condition" would be overstating things, since no such study exists. Nobody has run a clinical trial among people with established autoimmune disease that follows real-world flares over time. Still, the data available is genuinely solid and, in my opinion, more persuasive than the particular items discussed so far.
Nor is TA1 some brand-new compound assessed only on the studies just mentioned. Under the name Zadaxin/thymalfasin it has held approvals in many countries for years, applied to hepatitis B, immune deficiency and improved vaccine response. Routine use in places such as China, notably in intensive-care and oncology settings, goes back years as well.
Two distinct kinds of safety data follow from that. The first is the formal trial data, covering over 11,000 people in more than 30 trials. The second is the much larger real-world clinical experience, in which over 600,000 patients have reportedly been treated since approval. Being less controlled than a trial, that second group cannot establish the absence of rare or subtle risks. It remains informative all the same, since a common tendency for TA1 to produce obvious autoimmune flares ought to have surfaced after that much routine use. It has not. Nor was I able to find any data in which an autoimmune response appeared while TA1 was being used. So again: not a perfect all-clear, but definitely reassuring.
Sources I drew on:
Romani L, et al. Thymosin alpha 1 activates dendritic cells for antifungal Th1 resistance through Toll-like receptor signalling. Blood. 2004.
Giacomini E, et al. Dual effect of thymosin alpha1 on human monocyte-derived dendritic cells stimulated with viral and bacterial toll-like receptor agonists. Expert Opin Biol Ther. 2015.
Romani L, et al. Thymosin alpha1 activates dendritic cell tryptophan catabolism and establishes a regulatory environment for balance of inflammation and tolerance. Blood. 2006.
Giacomini E, et al. Thymosin-alpha1 expands deficient IL-10-producing regulatory B cell subsets in relapsing-remitting multiple sclerosis patients. Multiple Sclerosis. 2018.
Renga G, et al. Thymosin alpha1 protects from CTLA-4 intestinal immunopathology. Life Science Alliance. 2020.
Dinetz E, et al. Comprehensive review of the safety and efficacy of thymosin alpha 1 in human clinical trials. Altern Ther Health Med. 2024.