I think the reason for the dramatic improvement on Copaxone (glatiramer acetate) may be due to the fact that it inhibits immune cells called dendritic cells (see following study).
Multiple sclerosis: glatiramer acetate inhibits monocyte reactivity in vitro and in vivo.
Weber MS,
Starck M,
Wagenpfeil S,
Meinl E,
Hohlfeld R,
Farina C. 2004.
Brain 127(Pt 6):1370-8. Epub 2004 Apr 16.
“It is widely assumed that glatiramer acetate (GA), an approved agent for the immunomodulatory treatment of multiple sclerosis, acts primarily as an antigen for T lymphocytes. Recent studies, however, indicated that in vitro,
GA directly inhibits dendritic cells, a rare but potent type of professional antigen-presenting cell (APC). To investigate whether these in vitro observations are relevant to the actions of GA in vivo, we studied the effects of GA on monocytes, the major type of circulating APC…These results demonstrate for the first time that GA inhibits monocyte reactivity in vitro and in vivo, significantly extending the current concept of the mechanism of action of GA.”
Research confirms the involvement of dendritic cells in both MS and ME/CFS. Dendritic cells release large amounts of inflammatory cytokines such as tumor necrosis factor, interleukin-6, and interferon-gamma. These cytokines are responsible for many of the symptoms that occur in MS and ME/CFS. For instance, elevated tumor necrosis factor is directly linked to reduced cerebral blood flow. Reduced cerebral blood flow can lead to a variety of cognitive deficits (brain fog etc.).
ME/CFS AND BROAD DECREASES IN CEREBRAL BLOOD FLOW
In the following study the researchers found that patients with CFS had "broad decreases" in cerebral blood flow.
Cerebral blood flow is reduced in chronic fatigue syndrome as assessed by arterial spin labeling.
Biswal B1, et. al. J Neurol Sci. 2011 Feb 15;301(1-2):9-11.
"...The patients as a group had significantly lower global CBF than the controls. The reduction in CBF occurred across nearly every region assessed. The data extend our earlier observation that CFS patients as a group have broad decreases in CBF compared to healthy controls."
http://www.ncbi.nlm.nih.gov/pubmed/21167506
TNF AND REDUCED CEREBRAL BLOOD FLOW
Elevated TNF is directly linked to reduced cerebral blood flow. For example, in the following study the researchers found that TNF caused a "significant, acute" reduction in cerebral blood volume. Notice the study states that TNF is elevated in MS.
TNF-alpha reduces cerebral blood volume and disrupts tissue homeostasis via an endothelin- and TNFR2-dependent pathway.
Sibson NR1, et. al. Brain. 2002 Nov;125(Pt 11):2446-59.
"TNF-alpha expression is elevated in a variety of neuropathologies, including multiple sclerosis...Here, using MRI, we demonstrate that a focal intrastriatal injection of TNF-alpha causes a significant, acute reduction (15-30%) in cerebral blood volume..."
http://www.ncbi.nlm.nih.gov/pubmed/12390971
TNF AND ME/CFS
In the following study the researchers concluded that TNF was "significantly increased" in patients with CFS.
TNF-alpha and chronic fatigue syndrome.
Moss RB1, et. al. J Clin Immunol. 1999 Sep;19(5):314-6.
"Based upon the clinical presentation of chronic fatigue syndrome (CFS), we hypothesized that proinflammatory cytokines may play a role in the pathogenesis of the disease. We therefore undertook a retrospective cross-sectional study to examine the role of TNF-alpha in patients with CFS. Our results suggest a significant increase serum TNF-alpha in patients with CFS (P<0.0001) compared to non-CFS controls..."
http://www.ncbi.nlm.nih.gov/pubmed/10535608
Also, someone mentioned that they felt better on prednisone. Prednisone also inhibits dendritic cells.