You're correct Gijs.
However, may I suggest I think the low blood flow isn't causing microglial activation, it's a product of it? I can't prove this but I think it's possible also.
As for a reason to the low blood flow? Elevated lactate in the brain can alter blood flow. (We know 'CFS' has multiple high brain lactate studies). The culprit is likely infection, infection mediated autoimmunity leading to this brain cell inflammation (glial cells).
The recent acetylcholine autoantibody research from Norway, demonstrates an an autoimmune autonomic neuropathy. These patients don't have a CFS, they have an brain autoimmune disease. Dr Bell found brain autoimmunity years ago, as did a Japanese study (acetylcholine autoantibodies in 'CFS' patients). Muscaranic
or Nicotinic receptor, I forget.
So what does this lead to?
Well, as Fukuda CFS is based on unexplained chronic fatigue, then these brain autoimmunity patients are more likely ME patients in my opinion. For the sake of argument in this reply, I will call them ME, so I can link to the following:
In ME:
Something is screwing up the mitochondrial metabolism of the body, so the brain has no energy as it requires
huge amounts of ATP to function correctly. ME sufferers report they feel dreamy or drunk at rest with poor cognitive function. (This doesn't just affect our brains it affects our muscles, such as our hearts). However, I'll just debate neuroinflammation with you all so we keep on topic.
In ME:
When we then actively use our
exhausted at rest brains by thinking (intellectually is the worst) we develop visible signs of neurological dysfunction (rather than symptoms) that are clearly a central nervous system reaction and cannot be simulated - which psychiatrists would like to suggest and have done in the past with MS - MS was called 'Hysterical Paralysis'.
In ME:
The post exertional relapse in ME is not a ''malaise'' as in Fukuda CFS. A malaise is a
feeling.
In ME these are neurological
signs that can be witnessed by a doctor to be recorded as 'real'. Signs are what differentiates CFS from ME, but
signs of ME are not required to be diagnosed with CFS, CFS/ME, or CFS CCC.
Here are some classic post exertional neurological signs (not symptoms, signs)
from extensive brain use in ME.
I've removed cardiac/breathing to stay on topic. I get these a lot using this forum, and it takes me a long while to think and I am always 'out smarted' by people on here, as I struggle to 'think' and spend hours sometimes formulating a reply as the more I think, the more symptoms I get.
Weakness in fingers/hands if doing manual work such as typing, sewing (fine motor dysfunction).
Involuntary twitching of fingers, or other body parts, such as the face.
Sensory neuropathy worsening (biting sensation on skin, burning, etc).
Onset of worsening photophobia
Onset of worsening hyperacusis
Onset of Facial Palor
Vertigo/Dizzyness
Eyelid Twitching
Eyeball involuntary movement
Sluggish pupils
Stammer
Confusion/Sudden onset short term memory loss.
Feeling overly hot or cold.
Itching.
NB: None of the above Post Exertional Signs of ME are DETECTED or REQUIRED in CFS, CFS/ME, CFS CCC, & SEID. Lack of neurological signs are very important to remember when Dr Lipkin/Dr Hornig cannot find infection in CFS (which they call ME/CFS!), and cannot find Cytokine inflammation either after 3 years. Yet Dr Montoya and others
can (e.g. Dr De Meirleir, Dr Klimas, Dr Peterson, Dr Kogelnik etc) and patients who test privately can too.
So what if people said by black bold text is hysterical and the ME patients are somehow making their neurotic fear of 'thinking' make their bodies react adversely to neurological exertion? I would respond that Parkinson's patients also neurologically burn out, as in ME, by 'thinking', by using their ATP.
This study is thus of interest, that shows that a brain area had low CO-Q10 in Parkinson's. Other research
has also pointed to Parkinson's disease being a problem with Mitochondria.
Hargreaves IP, Lane A, Sleiman PM. The coenzyme Q10 status of the brain regions of Parkinson's disease patients. Neurosci Lett. 2008 December 5;447(1):17-9.
Department of Molecular Neuroscience, Institute of Neurology, Queen Square, London, UK.
Abstract:
http://www.ncbi.nlm.nih.gov/pubmed/18840506
Paywall:
http://www.sciencedirect.com/science/article/pii/S0304394008013426
So the idea of an exhausted brain that 'works', then is affected by exertion (classic sign of ME) it's not a whack idea or belief of ours (that needs CBT GET), it's happening to us and its real, we just don't know why yet.
It seems possible a lack of brain nerve cell cellular energy increases inflammation (and/or is impaired already by inflammation), as we recover, if we rest,it reduces.
How long this takes, depends on how affected you are at the time, and how severe your disease is. The 'payback' can also fluctuate massively, irrespective of pacing yourself. That is the nature of the beast unfortunately.
In ME: using our brains battery cells, causes a central nervous system effect patients can demonstrate.
In CFS, this is not required to be shown, or to be experienced. All that is required is self report of 'FATIGUE'.
FATIGUE cohorts, stymie inflammatory ME research. Hence the British love it and SEID allows for it.