Hi richvank,
I have to ask, would a partial block in the methylation cycle help explain why I responded negatively to SAM-e, vitamin E, and vitamin C? (the last 2 often recommended due to being anti-oxidants).
SAM-e: horrible bilious and strong malaise feeling all over, especially in the liver area, tingling in right arm.
Vitamin E: unusual nausea and weird "scratchy" headache.
Vitamin C: dull headache.
The response to SAM-e was bad and prolonged enough that you couldn't pay me to try it again. I would be reluctant to try vitamin E again, but the effects only lasted 48 hours. The effect from vitamin C isn't bad enough to fear it but I wouldn't take it regularly. These reactions only occurred when illness reached a certain phase of severity, a few years after trying numerous medications and treatments using recommended dosages (not all at once or together).
Until then the above listed supplements had no noticeable effect at all. Something strange occurred during the worsening of illness and ever since then, tolerance to medications and supplements in general took a nose dive and post-exertional symptoms have become much worse.
***Yes, I think that a worsening methylation cycle block could explain these negative responses. With regard to SAMe, a person with a normally functioning methylation cycle and sulfur metabolism in general does not respond that way to SAMe supplementation. So the negative response itself points to a problem there. I'm not sure why you experienced those particular symptoms. Normally the liver is the largest producer of SAMe in the body. If you had a partial methylation cycle block, your SAMe availability would have been low. In this situation, there was probably an upregulation of the enzymes that normally make use of SAMe (the methyltransferase enzymes). They would therefore have become much more sensitive to the SAMe level. When you then supplemented SAMe directly, it seems probable that these reactions would have surged faster than normal, and this would have affected your biochemistry in many ways, all of a sudden.
***With respect to vitamins C and E, if you had a partial methylation cycle block which was coupled to glutathione depletion, your body was likely in a condition of fairly high oxidative stress. As you noted, vitamins C and E are antioxidants. However, in normal conditions, they are recycled by glutathione as they become oxidized, so that they can be used again. If glutathione is depleted, they tend to remain oxidized, and this will have a pro-oxidant, rather than an antioxidant effect.
It has been a long time since I have read anything which may help to explain what happened and why it still mostly seems stuck there without sign of further improvement. I think your hypothesis on the partial block in the methylation cycle is a good candidate, and I would appreciate your opinion.
Last year I tried 1/4 dose FolaPro and 1/4 dose hydroxy-B12 for roughly 2 months. I couldn't sustain or tolerate a higher dosage. I stopped altogether, perhaps because I got impatient or just forgot 3 months is the suggested minimum. That was about 12 months ago and I regret not staying on it because I have recently become interested in trying it again due to the 23andme results. I ordered more FolaPro as the last bottle was out of date. The hydroxy-B12 bottle I have is still within date. I also ordered folinic acid and methyl-B12 drops. I am reluctant to get other peripheral cofactors, due to cost and potential tolerance issues.
***I can understand that, but it may be that your body is deficient in some of the cofactors that are needed by this part of the metabolism. I think that some of the failures of methylation treatment to help PWCs are a result of these deficiencies.
Apparently I am "(+/+)" for several of the relevant SNP's according to 23andme testing, so I guess this may point towards an increased susceptibility to a functional issue within the methylation cycle?
***Yes, I think that the SNPs that Amy Yasko has identified as being important in autism are also important in ME/CFS. The partial methylation cycle block and glutathione depletion are common to both.
I also wonder if it would be possible for me to fine-tune the protocol by looking at personal differences in my 23andme profile and do research on the mechanisms behind these processes?
http://www.knowyourgenetics.com/The Methylation Pathway_files/diagram-1.jpg
http://www.knowyourgenetics.com/The...ting a personalised 23andme analysis as well.