Hi Firestormm, my understanding is that this is not the case, its the common opinion amongst doctors but its wrong. I can't prove this however, as its only based on comments I have read over the years from a number of MS experts. Many ME patients have the same kinds of lesions. There is an overlap with spread and type of lesion in MS and ME. What I understood the difference to be is that ME lesions are transitory, often small, and typically not progressive, but this is not possible to determine from a single MRI scan. Multiple scans over time would be required. MS on the other hand have long term lesions in the same locations, and sometimes it progresses to more and larger lesions. In this context those MS experts were talking about ME as something along a spectrum, as I have said before. I cannot remember who they were, it was many years ago I was reading this.
Bye, Alex
Hi, Alex.
I also believe that there are problems with the myelin in ME/CFS. There are at least three substances in myelin (phos. choline, choline plasmalogen and myelin basic protein) that require methylation for their synthesis. There is good evidence for a partial methylation cycle block in ME/CFS (lab testing and positive results of treatment directed at restoring methionine synthase to normal operation). With low methylation capacity, I think it is reasonable to suspect that myelin repair would suffer. In addition, one of the best documented brain-related problems in ME/CFS is slow processing speed. This would be consistent with myelin damage, because myelin is what makes possible rapid transport of nerve impulses in the axons of the neurons.
Beyond this, I suspect that the electromagnetic radiation sensitivity experienced by some people with ME/CFS is due to myelin damage, because myelin normally acts as electrical insulation on the axons. With damaged myelin, I suspect that currents induced in the body by external em radiation can flow in the nerves, producing neurological symptoms.
In MS, the myelin damage results from an attack on the myelin by the immune system. That is, it is an autoimmune disease. In ME/CFS, I suggest that the myelin damage results from lack of normal maintenance and repair. This may account for the different characteristics of the damage, as viewed by MRI.
Best regards,
Rich
That certainly ties up with everthing my Neurologist tested for and spoke about Rich. And in the end it was all this that so confused him that he gave up - not Parkinsons, not MS but what. (He said could be ME and they think it's viral).
Morning,
Sorry I didn't reply sooner.
I had not heard or read of evidence that myelin in 'CFS/ME' patients was damaged in a similar manner as in patients with MS. This is something new and indeed I had not read (or remembered reading) of its' mention in any criteria including the latest International ME one.
But be that as it may (and I would like to read of any research in this area) the damage to myelin sheathing is observable in MS patients and is the main diagnostic marker for the disease - unlike in 'CFS/ME' - as I understand it and from the links I posted previously.
'A substance called myelin protects the nerve fibres in the central nervous system.
In MS, your immune system, which normally helps to fight off infections, mistakes myelin for a foreign body and attacks it.
This damages the myelin and strips it off the nerve fibres, either partially or completely, leaving scars known as lesions or plaques.'
http://www.mssociety.org.uk/what-is-ms/information-about-ms
The 'lesions' that have been noted previously in research for 'CFS/ME' were not - I don't recall reading - connected or assumed to be connected to myelin. But then again I am not a neurologist or medical professional, though they have ever been referred to simply as 'lesions'.
If myelin damage had been observed in patients with 'CFS/ME' then this would have presented something of a 'breakthrough' surely? And potentially would have enabled trials for the 'disease-modifying-drugs' that are being (not with any great success) trialled on patients with MS.
Before the myelin damage was attributed to MS this disease was in a similar 'boat' to our own (again as I understand it). If you could dig out any research I would be grateful (assuming this layman is able to understand it of course
).
Fire